Plane displacement device of electric power concrete pole

A plane displacement device for an electric concrete pole relates to the technical field of transportation of the electric concrete pole, solves the problem that the electric concrete pole is inconvenient to move within a small range in a horizontal plane, and comprises two moving trolleys, loading and transporting grooves are formed in the upper parts of the moving trolleys, and the two moving trolleys form a moving trolley group; the head end and the tail end of the electric power concrete pole are placed in a loading and transporting groove of the movable trolley set, a displacement track is arranged on the lower portion of the movable trolley set, a safety cable is arranged on the upper portion of the movable trolley set, and the safety cable is connected with the head end and the tail end of the electric power concrete pole and plays a role in protecting and limiting the electric power concrete pole. The electric power concrete pole is placed on the movable trolley set, the movable ...

Process for preparing insecticide for mosquito, fly and roach

The invented mosquito, fly and cock roach insecticide is made of clove, chrysanthemum ester compound, comphor ice and alcohol. Said chrysanthemum ester compound is cypermethrin and tetramethrin. Thisproduct is oilless and non-pollution to environment and is suitable for use in family and hotel.

System and method to perform adaptive channel filtering on a radio frequency burst in a cellular wireless network

A method to perform adaptive channel filtering on a Radio Frequency (RF) bursts in a cellular wireless communication system. This method first filters an input signal with a first stage filter having a first bandwidth to produce a first stage output signal. Then the first stage output signal is filtered with a second stage filter having a second bandwidth narrower than that of the first stage filter to produce a multi-stage output signal. A comparison between first stage performance measurements and multi-stage performance measurements determine the mode of operation of the adaptive multistage filter. A first mode of operation, selected when the first stage performance measurement compares favorably with the second stage performance measurement, selects the output of the first stage filter as the output of the multi-stage filter. Otherwise, a second mode of operation selects the output of the second stage filter as the output of the multi-stage filter.

Mehrzweigentzerrereinheit zur Unterdrückung von Störsignalen in einem drahtlosen Empfänger

Linear frequency hopping incoherent detecting passive intermodulation outlier locating method

The invention provides a linear frequency hopping incoherent detecting passive intermodulation outlier locating method. A single-frequency signal source and a frequency hopping signal source which are subjected to synchronization are used for synthesizing bi-note testing pulses which are loaded to a tested part to stimulate passive intermodulation interference, the frequency of passive intermodulation interference is frequency corresponding to bi-note signal stimulating, and accordingly fixed-order passive intermodulation interference is a section of frequency hopping pulses. A vector receiver which is subjected to synchronization calibration is used for receiving, an incoherent correlation detecting method is used for detecting a related peak of a pulse reaching moment, accordingly, electrical length locating is completed, and the physical length is computed. The method has the advantages that locating distance range resolution is high, and meanwhile a pulse system is used so that the ...

WCDMA terminal baseband processing module having multi-path scanner module

A baseband processing module according to the present invention includes a multi-path scanner module. The multi-path scanner module is operable to receive timing and scrambling code information regarding an expected multi-path signal component of a WCDMA signal. Then, the multi-path scanner module is operable to identify a plurality of multi-path signal components of the WCDMA signal by descrambling, despreading and correlating a known symbol pattern of/with a baseband RX signal within a search window. The multi-path scanner module is operable to determine timing information for the plurality of multi-path signal components of the WCDMA signal found within the search window and to pass this information to a coupled rake receiver combiner module.

System and method to determine a bit error probability of received communications within a cellular wireless network

RF communications received by a wireless terminal from a servicing base station are used to determine the BEP. These RF communications may be in the form of RF bursts that are part of a data frame. The signal to noise ratio (SNR) of the RF burst is determined and a sequence of soft decisions from the RF burst are extracted. The SNR maps to an estimated BEP based upon the modulation format and coding scheme of the RF burst. The soft decisions decode to produce a data block. When the soft decisions decoded favorably, the re-encoded data block produces a sequence of re-encoded decisions. Comparing the re-encoded decisions to the soft decisions yields a re-encoded bit error (RBER). When the decoding is unsuccessful, the BEP is estimated only upon the estimated BEP derived from the SNR. Otherwise, both the estimated BEP and RBER may be used to determine the BEP.

Anpassen von Übertragungsparametern zur Unterstützung der Koexistenzgerechtigkeit

Bei einigen Erscheinungsformen ist die Offenbarung auf Verfahren und Systeme für das Koexistenz-Management gerichtet. Ein erster Zugangspunkt, der unter Verwendung einer ersten RAT in einem lizenzfreien Frequenzband betrieben wird, empfängt von einem in dem lizenzfreien Frequenzband unter Verwendung einer zweiten RAT betriebenen, zweiten Zugangspunkt Informationen bezüglich des Betriebs des zweiten Zugangspunkts in dem lizenzfreien Frequenzband. Es wird unter Verwendung der empfangenen Informationen bestimmt, dass der erste Zugangspunkt oder der zweite Zugangspunkt einen ersten, unterhalb eines vorbestimmten Schwellenwerts liegenden Anteil des lizenzfreien Frequenzbands nutzt, was ein Ungleichgewicht der Nutzung zwischen der ersten RAT und der zweiten RAT angibt. Entsprechend der Bestimmung wird ein Übertragungsparameter des ersten Zugangspunkts für den Betrieb in dem lizenzfreien Frequenzband, bei dem die erste RAT verwendet wird, angepasst. Der erste Zugangspunkt überträgt unter Verwendung des angepassten Übertragungsparameters das eine oder die mehreren Pakete, um den ersten Zugangspunkt oder den zweiten Zugangspunkt zu veranlassen, einen aktualisierten Anteil des lizenzfreien Frequenzbands zu nutzen, der näher bei dem vorbestimmten Schwellenwert liegt als der erste Anteil. In some aspects, the disclosure is directed to methods and systems for coexistence management. A first access point operating in a license-free frequency band using a first RAT receives information regarding the operation of the second access point in the license-free frequency band from a second access point operated in the license-free frequency band using a second RAT. It is determined, using the received information, that the first access point or the second access point utilizes a first portion of the unlicensed frequency band below a predetermined threshold, indicating an imbalance in usage between the first RAT and the second RAT. According to the determination, a transmission parameter ...

Ground circuit management method and encoding method in multi-signaling point system

The invention relates to a method for managing a ground circuit in a multi-signaling point system and a coding method which comprise that: a mobile switching center MSC sends forward information to a base station controller BSC; the information carries a ground circuit CIC; a standard format code of the ground circuit is called an outer code; the base station controller receives the ground circuit and adds an official code of the ground circuit to the standard format code of the ground circuit to form a code of the ground circuit, that is, an inner code; after the services are processed, the base station controller converts the ground circuit from the inner code to the outer code, that is, getting rid of the official code added on the standard format code of the ground circuit; the base station controller sends backward information to the mobile switching center; the backward information carries the ground circuit; the code of the ground circuit is the outer code, that is, an code format ...

ADJUSTING TRANSMISSION PARAMETERS TO SUPPORT COEXISTENCE FAIRNESS

In some aspects, the disclosure is directed to methods and systems for coexistence management. A first access point operating in an unlicensed frequency band using a first RAT receives, from a second access point operating in the unlicensed frequency band using a second RAT, information regarding operation of the second access point in the unlicensed frequency band. It is determined, using the received information, that the first access point or the second access point is using a first share of the unlicensed frequency band that is below a predetermined threshold, indicating an imbalance of usage between the first RAT and the second RAT. A transmission parameter of the first access point for operating in the unlicensed frequency band using the first RAT is adjusted according to the determination. The first access point transmits the one or more packets using the adjusted transmission parameter, to cause the first access point or the second access point to use an updated share of the unlicensed frequency band that is closer to the predetermined threshold than the first share. 1. A method comprising:receiving, by a first access point configured to operate in a frequency band through a first communication protocol, from a second access point operating in the frequency band through a second communication protocol, information indicating operation of the second access point in the frequency band;determining, by the first access point according to the received information, a portion of the frequency band that is being used by one of the first access point and the second access point, relative to a predetermined threshold; andadjusting, by the first access point, according to the determination, one or more periods of time during which to cease operation by the first access point in the frequency band through the first communication protocol.2. The method of claim 1 , further comprising:determining an imbalance of usage of the frequency band between the first access point ...

An auto-regulation method on network time delay at ABIS mouth

The invention relates to a method for automatically adjusting time lag of an Abis interface network. A base station controller sends a front service frame based on primarily fixed and advanced frame numbers and adjusts the fixed and advanced frame numbers according to time adjusting information that exceeds preset threshold values between the base station controller and a base station transceiver, and the time adjusting information comprises but is not limited by PATE values. The method combines fixed advance and PATE adjustment, can self-adapt the time lag of the Abis interface network based on not consuming too much CPU, thus improving tolerance ranges and calling success ratio of time lag variation.

Single antenna interference cancellation within a wireless terminal

The present invention provides a multi-branch equalizer processing module operable to cancel interference associated with received radio frequency (RF) burst(s). This multi-branch equalizer processing module includes both a first equalizer processing branch and a second equalizer processing branch. The first equalizer processing branch is operable to be trained based upon known training sequences and equalize the received RF burst. This results in soft samples or decisions which in turn may be converted to data bits. The soft samples are processed with a de-interleaver and channel decoder, where the combination is operable to produce a decoded frame of data bits from the soft samples. A re-encoder may re-encode the decoded frame to produce re-encoded or at least partially re-encoded data bits. An interleaver then processes the at least partially re-encoded data bits to produce and at least partially re-encoded burst. The second equalizer processing branch uses the at least partially re-encoded data bits to train linear equalizer(s) within the second equalizer processing branch. A buffer may initially store the received RF burst(s), which are retrieved and equalized by the second equalizer processing branch once the linear equalizer(s) are trained. This results in alternate soft samples or decisions which in turn may be converted to alternate data bits. The alternate soft samples are processed with the de-interleaver and channel decoder, where the combination is operable to produce an alternate decoded frame of data bits from the alternate soft samples. This allows interfering signals to be cancelled and more accurate processing of the received RF bursts to occur.

Adjustable lasso device for electric insulation rope

An adjustable lasso device for an electric power insulating rope relates to the technical field of electric power engineering and comprises an insulating operating rod, a fixed arm is arranged at the top of the insulating operating rod, a rope hook is arranged at the front end of the fixed arm, a hook body of the rope hook extends upwards, a hook opening of the rope hook faces the insulating operating rod, and the rear end of the fixed arm is fixedly connected with the insulating operating rod; a rotating arm is arranged above the fixed arm, the front end of the rotating arm is located at the hook opening of the rope hook and is provided with a top pressing plate, the top pressing plate extends downwards and inclines towards the inclined front direction, and the rear end of the rotating arm is hinged to the insulating operating rod through a spring hinge; the fixed arm is provided with an up-down through port, and the front part of the rotating arm is connected with an insulating pull rope ...

Base station controller (BSC) and mobile switch (MSC) No. seven signaling link bandwidth enlarging method and base station controller

The invention discloses a BSC and MSC No. seven signaling link bandwidth enlarging method and a base station controller. The BSC and MSC No. seven signaling link bandwidth enlarging method comprises the following steps: the network element side of the BSC is collocated with a plurality of signaling points, each signaling point is connected with a same target MSC through a No. seven signaling link; No. seven signaling links from each signaling point to the target MSC are indexed by a user-defined index entry; and when the network element side of the BSC uses one signaling point to send an upper-layer service signaling to the target MSC, the BSC firstly selects the index entry and determines an originating signaling point address OPC according to the index entry and then packages the originating signaling point address OPC and the upper layer service signaling to a No. seven signaling and sends the No. seven signaling to the target MSC through the No. seven signaling link corresponding to ...

System und Verfahren zur Bestimmung einer Bitfehlerwahrscheinlichkeit von empfangenen Daten in einem zellularen, drahtlosen Netzwerk

System and method to perform DC compensation on a radio frequency burst in a cellular wireless network

A method to perform DC compensation on a Radio Frequency (RF) burst transmitted between a servicing base station and a wireless terminal in a cellular wireless communication system that first receives the RF burst modulated according to either a first or second modulation format. Samples from the RF burst, or taken from the training sequence, are produced and averaged to produce a DC offset estimate. The DC offset estimate is then subtracted from each of the samples. The modulation format of RF burst may then be identified from the samples. Depending on the identified modulation format the DC offset estimate may be re-added to the samples when a particular modulation format is identified as the modulation format of the RF burst. This decision is made based on how well various components within the wireless terminal perform DC offset compensation.

Korrektur der Frequenzverschiebung bei WCDMA

Vector network analyzer based light wave component test calibration method

The invention provides a vector network analyzer based light wave component test calibration method. A signal source of a vector network analyzer produces test signals, one test signal is coupled to the vector network analyzer through a coupler to be received by a receiver R1 channel, the other test signal enters an electro-optical conversion module, an optical signal output by the electro-optical conversion module is loaded to a light wave component to be tested, a transmission signal of the light wave component to be tested is converted into an electrical signal through a photovoltaic conversion module and received by a receiver B channel of the vector network analyzer, and a reflected signal of the light wave component to be tested is converted into an electrical signal through the other photovoltaic conversion module to be received by a receiver C channel of the vector network analyzer; the receiver R1 channel is a port 1, the receiver B channel is a port 2, and the receiver C channel ...

Ginger peeling method

A method for peeling ginger includes such steps as burying ginger underground for a certain time, and flushing it it the screen sieve by high-pressure water. Its advantages are high effect and simpleprocess.

Method for detecting state of group data service node

The invention discloses a method for detecting the state of a group data service node. The method comprises the following steps that: A, when the group data service node is in an out of service state, a group control function entity constructs a detecting user, and the detecting user transmits an A11 register request message to the group data service node to establish an A11 link; and B, whether the link is established successfully is determined, if the link is established successfully, the group data service node is set into a service state to permit access of a true user; and if the link is failed to be established, the state of the group data service node is maintained as the out of service state to forbid access of the true user. The method only defines three states for PDSN, namely the out of service state, the service state and an illegal service, and simply and effectively realizes state detection of the PDSN through constructing the detecting user. Furthermore, the method configures ...

Adaptive multi-step combined DC offset compensation for EDGE 8-PSK

A method to perform DC compensation on a Radio Frequency (RF) burst transmitted between a servicing base station and a wireless terminal in a cellular wireless communication system that first receives the RF burst modulated according to either a first or second modulation format. Samples from the RF burst, taken from the training sequence, are produced and averaged to produce a DC offset estimate. The DC offset estimate is then subtracted from each of the samples. The modulation format of RF burst may then be identified from the samples. Depending on the identified modulation format, the DC offset estimate may be re-added to the samples when a particular modulation format is identified as the modulation format of the RF burst. This decision is made based on how well various components within the wireless terminal perform DC offset compensation.

Hybrid multi-cell channel estimation

Hybrid multi-cell channel estimation. At least two different operational modes associated with performing multi-cell channel estimation are combined and performed within different respective iterations of processing in order to generate a multi-cell channel estimate. A device, including at least one wireless interface to support communications with at least one other device and also including at least one processor to process signals received by or to be transmitted from, is operative to generate a multi-cell channel estimate corresponding to two or more respective cells with which the device may communicate. A first operational mode corresponds to time domain (TDOM) based per-tap serial interference cancellation (SIC), and a second operational mode corresponds to frequency domain (FDOM) based per-cell SIC. One implementation operates with no more than one iteration of TDOM based per-tap SIC, and no more than two iterations of FDOM based per-cell SIC. 1. An apparatus , comprising:at least one wireless interface to support communications with at least one additional communication device via a plurality of cells; and the processor to operate using a time domain per-tap serial interference cancellation (SIC) basis in a first of the plurality of iterations; and', 'the processor to operate using a frequency domain per-cell serial interference cancellation (SIC) basis in a second of the plurality of iterations;', generate the multi-cell channel estimate from the second of the plurality of iterations; or', 'operate using the frequency domain per-cell basis in a third of the plurality of iterations and to generate the multi-cell channel estimate from the third of the plurality of iterations., 'based on a comparison of at least one power of at least one interferer cell with at least one power of at least one other of the plurality of cells, the processor adaptively either to], 'a processor to generate a multi-cell channel estimate corresponding to the plurality of cells ...

Über WIFI Koordiniertes LAA-LTE

Ein Verfahren umfasst das Erkennen, unter Verwendung eines WiFi-Zugangspunkts, von Kanalnutzungsdaten, die den Datenverkehr auf einer Vielzahl von Kanälen eines lizenzfreien LTE-Bandes in einem drahtlosen Netz angeben. Das Verfahren umfasst ferner das Bereitstellen der Kanalnutzungsdaten für einen LTE-Zugangspunkt (Long Term Evolution). Das Verfahren umfasst ferner das Auswählen, unter Verwendung des LTE-Zugangspunkts, eines Kanals aus der Vielzahl von Kanälen auf der Grundlage der Kanalnutzungsdaten von dem WiFi-Zugangspunkt zur Nutzung beim Übertragen von Daten durch den LTE-Zugangspunkt. Das Verfahren umfasst ferner das Bereitstellen, von dem LTE-Zugangspunkt, einer Angabe einer bevorstehenden Übertragung, die so konfiguriert ist, dass sie Daten auf dem Kanal an den WiFi-Zugangspunkt überträgt. Das Verfahren umfasst ferner das Rundsenden einer oder mehrerer Nachrichten von dem WiFi-Zugangspunkt an einen oder mehrere WiFi-Knoten, wobei die eine oder die mehreren Nachrichten so konfiguriert ...

Licensed-assisted access (LAA) using long term evolution (LTE) protocols

The disclosure is directed systems and methods for providing robust coexistence for LAA-LTE, including physical layer enhancements and options to support robust coexistence for LAA-LTE, and deployment and evaluation scenarios and methods.

Method and device for carrying out balanced treatment for RF pulse

Selectively disabling interference cancellation based on channel dispersion estimation

A channel dispersion estimation algorithm(s) may be implemented within a channel length estimation module of a multi-branch equalizer processing module that disables a branch of the multi-branch equalizer processing module when the channel length or channel delay spread associated with received radio frequency (RF) bursts exceeds a predetermined threshold. The channel dispersion estimation algorithm identifies when the radio frequency (RF) bursts have a channel length or channel delay spread that can affect receiver performance. The channel length estimation module may disable interference cancellation by a branch of the multi-branch equalizer processing module in response to such a channel length or channel delay spread.

Crane operation lower channel security and protection device and control method thereof

The invention discloses a crane operation lower channel security and protection device, which comprises a proximity switch arranged above a crane corridor; the stop block is arranged on the side surface of the crane; the distribution box is arranged on the side surface of the crane corridor; the traffic lights and the alarms are arranged on the stand columns of the pedestrian passage; and the flag bit is used for identifying the advancing direction of the crane and promoting the proximity switch to generate the switching value. The invention further discloses a control method of the security and protection device for the lower channel during crane operation. The safety protection device is additionally arranged on the crane to remind pedestrians of avoiding and passing in time, when the crane travels to the first proximity switch, the red light is turned on, and the alarm is prompted to give an alarm sound, so that the operation safety of the crane can be effectively improved, and potential ...

Selectively Disabling Interference Cancellation Based on Channel Dispersion Estimation

A channel dispersion estimation algorithm(s) may be implemented within a channel length estimation module of a multi-branch equalizer processing module that disables a branch of the multi-branch equalizer processing module when the channel length or channel delay spread associated with received radio frequency (RF) bursts exceeds a predetermined threshold. The channel dispersion estimation algorithm identifies when the radio frequency (RF) bursts have a channel length or channel delay spread that can affect receiver performance. The channel length estimation module may disable interference cancellation by a branch of the multi-branch equalizer processing module in response to such a channel length or channel delay spread.

Compatible method for accessing wireless packet data service call with different service types

The invention provides a compatible method for accessing a wireless packet data service call with different service types. A base station controller BSC transmits a wireless packet data service call to a packet control function PCF entity, the wireless packet data service call carries service type marks, and the PCF entity transmits the wireless packet data service call to a packet data service node PDSN of the service types to treat according to the service type marks. The method enables 1x service and EV-DO service in a code division multiple access CDMA wireless network to be smoothly connected to the PDSN which can support the service and solves the problems of coexistence and incompatibility of the PDSN for supporting the 1x service and the PDSN for supporting the EV-DO service in commercial environment, and the 1x service and the EV-DO service can not be mutually influenced.

Method and device for stereoscopic imaging

DYNAMIC LTE SIGNAL DETECTION

Systems and methods allow LAA LTE equipment to coexist with other services in the unlicensed band such as WIFI or WLAN services. Systems and methods use LTE reference signals in the unlicensed spectrum that are not continuous and can be interrupted by a WIFI signal or other services in the unlicensed band or use a dynamic LAA ON burst or window to provide the LTE reference signals in some embodiments. The systems and methods can detect the presence of LTE signals using a one or more of a number of techniques.

WCDMA terminal baseband processing module having multi-path scanner module

A baseband processing module according to the present invention includes a multi-path scanner module. The multi-path scanner module is operable to receive timing and scrambling code information regarding an expected multi-path signal component of a WCDMA signal. Then, the multi-path scanner module is operable to identify a plurality of multi-path signal components of the WCDMA signal by descrambling, despreading and correlating a known symbol pattern of/with a baseband RX signal within a search window. The multi-path scanner module is operable to determine timing information for the plurality of multi-path signal components of the WCDMA signal found within the search window and to pass this information to a coupled rake receiver combiner module.

Small -size pair of three -dimensional circulation garage parking of parking stall multilayer

The utility model discloses a small -size pair of three -dimensional circulation garage parking of parking stall multilayer, including three -dimensional circulation car frame body, three -dimensional circulation car frame body is provided with the cover body outward, the cover body is detachable roof, both sides board, front bezel and back plate, be provided with the door that opens and shuts on the front bezel. This garage parking simple structure can realize the effect of keeping out wind and rain, owing to be provided with the cover body outside solid circulation car frame body, receive abominable weather effect so can prevent the garage parking, and the assembly is easy.

Single-camera stereoscopic endoscope system

The invention discloses a single-camera stereoscopic endoscope system. The traditional advanced endoscope medical imaging equipment at home and abroad can conveniently obtain and store a medical image but has a defect that a doctor can not conveniently and accurately make a judgment due to unavailable direct view of the azimuth, distance, and the like of a focus because the traditional medical image is a plane image. A single-camera stereoscopic endoscope system comprises a stereoscopic endoscope and viewing equipment. Two pictures with a visual angle difference can be partitioned in the image by adding one prism with two base angles of 22-30 degrees in the front of a camera lens of the endoscope, thus a single-camera stereoscopic endoscope is generated. The system views a stereoscopic image in real time by a stereoscopic spectacles television, a display stereoscopic film viewer and a stereoscopic projector which are matched with the system, can conveniently and accurately view the stereoscopic ...

Servo numerical control system power supply

The invention discloses a servo numerical control system power supply comprising a power supply management IC, one end of which is connected with a power supply interface; the charging management IC is located at one end of the power management IC, and the power management IC inputs internal current into the charging management IC; the method can be used for 10-20 years according to the application environment, the subsequent maintenance cost of equipment is reduced, and the use of lithium thionyl chloride batteries is reduced; a power supply on any equipment can be connected, and an additional power supply is not needed; the electric quantity of the ion super-capacitor is automatically detected when the ion super-capacitor is powered on each time, the ion super-capacitor is automatically charged to be in a 100% full-charge state without being fully charged, if the ion super-capacitor is continuously powered off and the electric quantity of the ion super-capacitor is automatically detected ...

System und Verfahren zur Gewinnung von Statusflaggebits der Aufwärtsverbindung in einem zellularen, drahtlosen Netzwerk

Method for limiting user moving range under call state

The invention discloses a method for limiting a user moving range under a call state, and relates to a cellular mobile communication system. In the method, a base station sender deploys an RTD predetermined threshold value for each sector; the base station sender keeping communication with a mobile terminal in the call state periodically sends a communication round trip delay RTD value between the base station sender and the mobile terminal to a base station controller; the base station controller judges the received RTD value, and if the RTD value is more than the RTD predetermined threshold value at the sector where the terminal is positioned, the terminal is beyond a limited boundary zone of the mobile communication system, and the base station controller releases the call service of the terminal. When the system coverage is beyond the limited boundary zone of the mobile communication system, the user moving range under the call state is precisely limited, and the method is particularly ...

Adaptative mehrstufig kombinierte Kompensation des Gleichspannungsoffsets

Electrified mounting base for cross arm of electric power tower

A live-line mounting base for a cross arm of an electric power tower belongs to the technical field of electric power engineering and comprises a U-shaped seat, and a bird repelling device is mounted on the top surface of the U-shaped seat; the closed end of the U-shaped seat is detachably connected with an insulating grab handle, and a fastening top plate capable of moving up and down in the U-shaped seat is arranged through the opening of the U-shaped seat; the end, facing the opening, of the fastening top plate is integrally connected with the bottom side of the opening through an arc-shaped spring piece. A threaded through hole is formed in the bottom surface of the U-shaped seat, a jacking screw rod is in threaded connection with the interior of the threaded through hole, the top end of the jacking screw rod can jack up the fastening top plate, a slot is formed in the bottom end of the jacking screw rod, and an insulating rotating handle capable of rotating the jacking screw rod is ...

DC offset correction for very low intermediate frequency receiver

A wireless receiver includes a local oscillator, a mixer, a band pass filter, a DC offset determination module, a DC offset correction module, a subtraction module, and a down converter. The local oscillator produces a local oscillation that a mixer uses to down convert the RF information signal to produce a Very Low Intermediate Frequency (VLIF) information signal at a VLIF and having a DC offset. The band pass filter band pass filters the VLIF information signal. The DC offset determination module produces a DC offset indication for the VLIF information signal. The DC offset correction module generates a DC offset correction based upon the DC offset indication. The subtraction module subtracts the DC offset correction from the VLIF information signal to substantially remove a DC offset of the post-filtered VLIF information signal. The down converter down converts the VLIF information signal to a baseband information signal. In an alternate embodiment, the VLIF information signal is down ...

Preparation method of mesoporous hematite phosphorus removal agent

The invention relates to the field of solid waste resource utilization and sewage treatment, in particular to a preparation method of a mesoporous hematite phosphorus removal agent. The method comprises the following steps: S1, adding the gasified coarse slag into hydrochloric acid, and stirring for reaction; s2, drying the product in the step S1; s3, calcining the product obtained in the step S2 in a muffle furnace; and S4, washing the product obtained in the step S3 with deionized water until the washing water becomes clear, drying and grinding to obtain a target product, namely the mesoporous hematite phosphorus removal agent. According to the prepared mesoporous hematite phosphorus removal agent, the iron raw material comes from solid waste gasification coarse slag, and a large amount of iron salt does not need to be additionally added.

Coexistence management via scheduling

In some aspects, the disclosure is directed to methods and systems for coexistence management. A first access point is scheduled a time to begin transmission of a packet to a user device in an unlicensed frequency band using a first RAT. The time to begin the transmission is scheduled to avoid transmission overlap with a second access point using a second RAT in the unlicensed frequency band, and scheduled according to information from the second access point regarding operation in the unlicensed frequency band using the second RAT. One of the first and second RATs includes one of a WLAN RAT or a LTE based RAT, and another of the first and second RATs includes a remaining one of the WLAN RAT or the LTE based RAT, in one or more embodiments. The first access point receives updated information regarding operation in the unlicensed frequency band using the second RAT. Using the updated information, an updated time for the first access point to begin the transmission using the first RAT is ...

Pipeline architecture for multi-slot wireless link processing

A wireless communication device processes N Radio Frequency (RF) bursts contained within N slots of a digital communications time divided frame, wherein N is a positive integer greater than one. The wireless communication device includes an RF front end, a baseband processor, and an equalizer module. The RF from end is operable to receive the plurality of received RF bursts and to convert the RF bursts to corresponding baseband signals. The baseband processor operably couples to the RF front end, is operable to receive the baseband signals, is operable to pre-equalization process the baseband signals to produce processed baseband signals, and is operable to post-equalization process soft decisions. The equalizer module operably couples to the baseband processor and is operable to equalize the processed baseband signals to produce the soft decisions. These RF bursts may be contained in adjacent slots or, in non-adjacent slots, or in a combination of adjacent slots and non-adjacent slots.

Korrektur der Frequenzverschiebung bei WCDMA

WiFi-coordinated LAA-LTE

A method includes detecting, using a WiFi access point, channel use data indicating traffic on a plurality of channels of an unlicensed LTE band in a wireless network. The method further includes providing the channel use data to a Long Term Evolution (LTE) access point. The method further includes selecting, using the LTE access point, a channel for use in transmitting data by the LTE access point from among the plurality of channels based on the channel use data from the WiFi access point. The method further includes providing, from the LTE access point, an indication of an upcoming transmission configured to transmit data on the channel to the WiFi access point. The method further includes broadcasting one or more messages from the WiFi access point to one or more WiFi nodes, the one or more messages configured to prevent the WiFi nodes from transmitting on the channel.

A method of message sending under multi-signaling configuration of base station controller

The present invention discloses a method for sending messages under the multi-signaling allocation of a base station controller, which comprises the steps that: (1) each signaling point of the base station controller is connected with an office direction and a preferred sending office direction is allocated to the messages sent of each location area number under the base station controller; (2) a mobile exchange center sends messages to the base station controller by each signaling point; (3) the base station controller receives the messages and obtains the location area numbers carried by the messages, then sends the messages to a base station transceiving station corresponding to the base station controller through the preferred sending office direction corresponding to the location area numbers. Compared with the prior art, the invention has the advantages that the BSC can filter repeat paging messages, reduce loads of the system and improve operating efficiency of the system under the ...

Equalize training method using re-encoded bits and known training sequences

Equalizer training method using re-encoded bits and known training sequences. A multi-branch equalizer processing module is operable to cancel interference associated with received radio frequency (RF) burst(s) (e.g., using at least a first equalizer processing branch and a second equalizer processing branch). The first equalizer processing branch is operable to be trained based upon known training sequences and to equalize the received RF burst. The second equalizer processing branch uses at least partially re-encoded data bits to train linear equalizer(s) within the second equalizer processing branch. A buffer may initially store the received RF burst(s), which are retrieved and equalized by the second equalizer processing branch once the linear equalizer(s) are trained. The cooperation operation of these and other various components allows interfering signals to be cancelled and for more accurate processing of the received RF bursts to occur.

COEXISTENCE MANAGEMENT VIA SCHEDULING

In some aspects, the disclosure is directed to methods and systems for coexistence management. A first access point is scheduled a time to begin transmission of a packet to a user device in an unlicensed frequency band using a first RAT. The time to begin the transmission is scheduled to avoid transmission overlap with a second access point using a second RAT in the unlicensed frequency band, and scheduled according to information from the second access point regarding operation in the unlicensed frequency band using the second RAT. One of the first and second RATs includes one of a WLAN RAT or a LTE based RAT, and another of the first and second RATs includes a remaining one of the WLAN RAT or the LTE based RAT, in one or more embodiments. The first access point receives updated information regarding operation in the unlicensed frequency band using the second RAT. Using the updated information, an updated time for the first access point to begin the transmission using the first RAT is determined, the updated time determined to avoid transmission overlap with the second RAT in the unlicensed frequency band. The first access point transmits, according to the determined updated time, the packet in the unlicensed frequency band using the first RAT. 1. A method for managing co-existence , the method comprising:scheduling, for a first access point, a first transmission to a user device in a shared frequency band using a first radio access technology (RAT), the first transmission scheduled to avoid an overlap with a second transmission from a second access point using a second RAT in the shared frequency band, the first transmission scheduled according to information from the second access point regarding operation in the shared frequency band using the second RAT, wherein the first RAT comprises one of a wireless local area network (WLAN) RAT or a long term evolution (LTE) based RAT, and the second RAT comprises the other one of the WLAN RAT or the LTE based RAT; ...

Verbesserter Licensed-Assisted Access (LAA) unter Verwendung von Long Term Evolution (LTE) Protokollen

Die Offenbarung bezieht sich auf Systeme und Verfahren zum Bereitstellen stabiler Koexistenz für LAA-LTE, einschließlich Verbesserungen für physikalische Schichten und Optionen zur Unterstützung stabiler Koexistenz für LAA-LTE, und Verwendungs- und Auswertungsszenarien und -verfahren.

System und Verfahren zur Gewinnung von Statusflaggebits der Aufwärtsverbindung in einem zellularen, drahtlosen Netzwerk

Adjusting transmission parameters to support coexistence fairness

In some aspects, the disclosure is directed to methods and systems for coexistence management. A first access point operating in an unlicensed frequency band using a first RAT receives, from a second access point operating in the unlicensed frequency band using a second RAT, information regarding operation of the second access point in the unlicensed frequency band. It is determined, using the received information, that the first access point or the second access point is using a first share of the unlicensed frequency band that is below a predetermined threshold, indicating an imbalance of usage between the first RAT and the second RAT. A transmission parameter of the first access point for operating in the unlicensed frequency band using the first RAT is adjusted according to the determination. The first access point transmits the one or more packets using the adjusted transmission parameter, to cause the first access point or the second access point to use an updated share of the unlicensed frequency band that is closer to the predetermined threshold than the first share.

WCDMA terminal baseband processing module having multi-path scanner module

A baseband processing module according to the present invention includes a multi-path scanner module. The multi-path scanner module is operable to receive timing and scrambling code information regarding an expected multi-path signal component of a WCDMA signal. Then, the multi-path scanner module is operable to identify a plurality of multi-path signal components of the WCDMA signal by descrambling, despreading and correlating a known symbol pattern of/with a baseband RX signal within a search window. The multi-path scanner module is operable to determine timing information for the plurality of multi-path signal components of the WCDMA signal found within the search window and to pass this information to a coupled rake receiver combiner module.

System and Methods for Supporting Multiple Communications Protocols on a Mobile Phone Device

A mobile phone device utilizing a first communications protocol and a second communications protocol, comprises: a first system having a general processor, a memory, a first communications system providing for the first communications protocol and utilizing a first communications protocol stack, and a first link; a second system having a dedicated communications accelerator providing for the second communications protocol and utilizing a second communications protocol stack, and a second link; wherein the first link and the second link are connected; and wherein the memory in the first system holds the first communications protocol stack and the second communications protocol stack.

Method for base station controller to acquire state of packet control functional (PCF) entity

The invention provides a method for a base station controller to acquire state of a packet control functional (PCF) entity, which comprises that: the base station controller sends a state query message to each PCF entity connected with the base station controller; and after receiving the state query message, the PCF entity detects personal state, puts personal state information in a state response message, and returns the personal state information to the base station controller. The method enables the base station controller (BSC) to detect the state of the PCF entity in real time so as to provide basis for the BSC to select the PCF entity for user access call and prevent the BSC from accessing the user call to the failed PCF to cause call failure.

Equalizer training method using re-encoded bits and known training sequences

The present invention provides a multi-branch equalizer processing module operable to cancel interference associated with received radio frequency (RF) burst(s). This multi-branch equalizer processing module includes both a first equalizer processing branch and a second equalizer processing branch. The first equalizer processing branch is operable to be trained based upon known training sequences and equalize the received RF burst. This results in soft samples or decisions which in turn may be converted to data bits. The soft samples are processed with a de-interleaver and channel decoder, where the combination is operable to produce a decoded frame of data bits from the soft samples. A re-encoder may re-encode the decoded frame to produce re-encoded or at least partially re-encoded data bits. An interleaver then processes the at least partially re-encoded data bits to produce and at least partially re-encoded burst. The second equalizer processing branch uses the at least partially re-encoded ...

Lead-free modified polyformaldehyde material and its preparing method

Self-moving advanced supporting equipment of heading machine

The invention relates to underground coal mine heading supporting equipment, in particular to self-moving advanced supporting equipment of a heading machine. The equipment comprises two groups of supports which are arranged back and forth, wherein a front support implements net installation by adopting a slewing beam to support an exposed top plate; a rear support is responsible for pushing the front support to move. According to the equipment, with hydraulic pressure as power, the supports can be self-moved; the slewing beam supports, manages and controls the top plate in advance; as the net installation is implemented by skilfully using the slewing beam, and then an anchor rod is stricken, the damage to the top plate is furthest decreased; the safety of operators is protected, the labour production rate is improved, and the physical labour of workers is decreased; the problems of low efficiency, bad safety reliability, great labour intensity of the workers and the like of an existing ...

Method for reducing hot taste of ginger

A method for decreasing hot taste of ginger includes such steps as washing, cutting, immersing and boiling. Its advantages are high effect and simple process.

WCDMA terminal baseband processing module having multi-path scanner module

A baseband processing module according to the present invention includes a multi-path scanner module. The multi-path scanner module is operable to receive timing and scrambling code information regarding an expected multi-path signal component of a WCDMA signal. Then, the multi-path scanner module is operable to identify a plurality of multi-path signal components of the WCDMA signal by descrambling, dispreading and correlating a known symbol pattern of/with a baseband RX signal within a search window. The multi-path scanner module is operable to determine timing information for the plurality of multi-path signal components of the WCDMA signal found within the search window and to pass this information to a coupled rake receiver combiner module.

Adaptive multi-step combined DC offset compensation for edge 8-PSK

A method to perform DC compensation on a Radio Frequency (RF) burst transmitted between a servicing base station and a wireless terminal in a cellular wireless communication system that first receives the RF burst modulated according to either a first or second modulation format. Samples from the RF burst, taken from the training sequence, are produced and averaged to produce a DC offset estimate. The DC offset estimate is then subtracted from each of the samples. The modulation format of RF burst may then be identified from the samples. Depending on the identified modulation format, the DC offset estimate may be re-added to the samples when a particular modulation format is identified as the modulation format of the RF burst. This decision is made based on how well various components within the wireless terminal perform DC offset compensation.

Pipeline architecture for multi-slot wireless link processing

A wireless communication device processes N Radio Frequency (RF) bursts contained within N slots of a digital communications time divided frame, wherein N is a positive integer greater than one. The wireless communication device includes an RF front end, a baseband processor, and an equalizer module. The RF from end is operable to receive the plurality of received RF bursts and to convert the RF bursts to corresponding baseband signals. The baseband processor operably couples to the RF front end, is operable to receive the baseband signals, is operable to pre-equalization process the baseband signals to produce processed baseband signals, and is operable to post-equalization process soft decisions. The equalizer module operably couples to the baseband processor and is operable to equalize the processed baseband signals to produce the soft decisions. These RF bursts may be contained in adjacent slots or, in non-adjacent slots, or in a combination of adjacent slots and non-adjacent slots.

System and method to perform DC compensation on a radio frequency burst in a cellular wireless network

A method to perform DC compensation on a Radio Frequency (RF) burst transmitted between a servicing base station and a wireless terminal in a cellular wireless communication system that first receives the RF burst modulated according to either a first or second modulation format. Samples from the RF burst, or taken from the training sequence, are produced and averaged to produce a DC offset estimate. The DC offset estimate is then subtracted from each of the samples. The modulation format of RF burst may then be identified from the samples. Depending on the identified modulation format, the DC offset estimate may be re-added to the samples when a particular modulation format is identified as the modulation format of the RF burst. This decision is made based on how well various components within the wireless terminal perform DC offset compensation.

Method for preventing access collision in radio communication system

The present invention discloses a method for access of confliction into radio communication system, comprising the following steps that: a base station sends access channel load information to a terminal at specified times, then, the terminal receives the system access channel load information first when they are accessed into the base station and calculates to obtain the access probability threshold of the current persistent test in accordance with the access channel load information and the access waiting time n of the current terminals P(m,n); the terminal generates a probability RP of [0,1] which is compared with the access probability threshold P(m,n) to execute persistent test; finally, the terminal determines whether sending an access probe sequence in the present access time slot. The present invention comprehensively considers load situation of the system and the access waiting time of the terminal as well as fairness of access, and improves feel of users; the longer of the access ...

生活用水杀菌水箱

A bactericiding water tank features that in the water tank, the copper rods are densely arranged for sufficient contact between water and tank walls to which the copper plates are fixed, a valve is arranged at water inlet, a box filter is arranged at water outlet, and soft rubber pad is arranged between top plate and lower tank body.

Spot welding machine

The utility model discloses a spot welding machine, include: the bottom electrode seat is provided with the bottom electrode on it, go up the electrode support, the activity sets up in the top of bottom electrode seat, be provided with on it with the bottom electrode assorted on the electrode, this spot welding machine still includes a balance mechanism, sets up in the upper portion of last electrode support, the straight line driver, with balance mechanism links to each other for drive dynamic balancing machine and construct the up -and -down motion in order to drive go up the electrode support up -and -down motion, the straight line driver drives dynamic balancing machine and constructs the downstream so that go up the surface that the work piece can be hugged closely to the electrode toit leans on on the bottom electrode to make the work piece support, the lower extreme facial features that make to go up the electrode through above structure is parallel to each other to the up endof ...

Method for implementing terminal access and improvement of terminal voice quality

The invention discloses a realizing method of both accessing a terminal and increasing terminal voice quality. The method comprises following steps: negotiating services between a terminal and a key station on a control communication channel and lowering the service quality according to capability levels of a supporting terminal which is corresponded with different coding and decoding algorithms by the key station and then enabling the terminal to be accessed into the key station according to the capability levels of the terminal from high to low. The method of the invention can both access the terminal and increase the terminal voice quality evenly, thereby old terminals with low terminal capability levels are accessed into a developed wireless communication system, and simultaneously the speech quality of majority of terminals with higher terminal capability levels can not be affected.

Ground circuit management method in multi-signaling point system

The invention relates to a method for managing a ground circuit in a multi-signaling point system and a coding method which comprise that: a mobile switching center MSC sends forward information to a base station controller BSC; the information carries a ground circuit CIC; a standard format code of the ground circuit is called an outer code; the base station controller receives the ground circuit and adds an official code of the ground circuit to the standard format code of the ground circuit to form a code of the ground circuit, that is, an inner code; after the services are processed, the base station controller converts the ground circuit from the inner code to the outer code, that is, getting rid of the official code added on the standard format code of the ground circuit; the base station controller sends backward information to the mobile switching center; the backward information carries the ground circuit; the code of the ground circuit is the outer code, that is, an code format ...

Process for preparing insecticide for mosquito, fly and roach

Call connection establishing method

The invention provides a method for setting up the call connection, comprising the following steps: a base station carries out the office-direction choice of MSC (Mobile Switching Center) by a cell identifying affiliation office-direction choice mode after receiving the call message from the terminal; the base station carries out the office-direction choice of MSC (Mobile Switching Center) by a balanced load office-direction choice mode when the cell identifying affiliation office-direction choice mode is failure; and the base station sets up the call connection with the MSC by the chosen office direction and further sets up the call connection between the terminal and the MSC after completing the office-direction choice of MSC. The invention can set up call connection in accordance with the compatibility, the calling success ratio, the link balanced load and the like.

System and method to perform adaptive channel filtering on a radio frequency burst in a cellular

A method to perform adaptive channel filtering on a Radio Frequency (RF) bursts in a cellular wireless communication system. This method first filters an input signal with a first stage filter having a first bandwidth to produce a first stage output signal. Then the first stage output signal is filtered with a second stage filter having a second bandwidth narrower than that of the first stage filter to produce a multi-stage output signal. A comparison between first stage performance measurements and multi-stage performance measurements determine the mode of operation of the adaptive multistage filter. A first mode of operation, selected when the first stage performance measurement compares favorably with the second stage performance measurement, selects the output of the first stage filter as the output of the multi-stage filter. Otherwise, a second mode of operation selects the output of the second stage filter as the output of the multi-stage filter.

No-raster naked eye three-dimensional display screen, screen and imaging method

The invention discloses a no-raster naked eye three-dimensional display screen, a screen and an imaging method. The screen surfaces of the display screen and the screen are designed in tooth profiles, wherein each tooth profile comprises left and right screen surfaces; a left image signal display screen of a three-dimensional image signal is formed by all the left screen surfaces of the tooth profiles; a right image signal display screen of the three-dimensional image signal is formed by all the right screen surfaces of the tooth profiles; and the arranging angle of each tooth profile is arranged based on the principle that the left screen surfaces are only seen by the left eye of a human while the right screen surfaces are only seen by the right eye of a human. By using the no-raster naked eye three-dimensional display screen provided by the invention, the technical problem that people need to watch the lossless three-dimensional image with glasses is solved.

Selectively disabling interference cancellation based on channel dispersion estimation

This invention provides channel dispersion estimation algorithm(s). This channel dispersion estimation algorithm(s) may be implemented within a channel length estimation module of a single-branch or multi-branch equalizer processing module that enables interference cancellation when the channel length or channel delay spread associated with received radio frequency (RF) bursts compares unfavorably to predetermined thresholds. The channel dispersion estimation algorithm identifies when the radio frequency (RF) bursts have a channel length or channel delay spread that can affect receiver performance. The channel length estimation module may disable interference cancellation in response to such a channel length or channel delay spread. Additionally, the channel length estimation module may adjust the number of equalizer states for the single-branch or first branch of a multi-branch equalizer based the channel length or channel delay spread. The multi-branch equalizer improves the signal-to-noise ...

Method for enlarging bandwidth of base station controller (BSC) and mobile switch (MSC) No. seven signaling link

The invention discloses a BSC and MSC No. seven signaling link bandwidth enlarging method and a base station controller. The BSC and MSC No. seven signaling link bandwidth enlarging method comprises the following steps: the network element side of the BSC is collocated with a plurality of signaling points, each signaling point is connected with a same target MSC through a No. seven signaling link;No. seven signaling links from each signaling point to the target MSC are indexed by a user-defined index entry; and when the network element side of the BSC uses one signaling point to send an upper-layer service signaling to the target MSC, the BSC firstly selects the index entry and determines an originating signaling point address OPC according to the index entry and then packages the originating signaling point address OPC and the upper layer service signaling to a No. seven signaling and sends the No. seven signaling to the target MSC through the No. seven signaling link corresponding to ...

High-voltage safe temperature detection system for new energy automobile

The invention discloses a high-voltage safe temperature detection system for a new energy automobile, relates to the field of new energy automobile power batteries, and can timely find out poor plug-in connection of a plug-in due to some adverse factors and timely give an alarm through additionally arranging temperature detection and plug-in temperature detection, thereby reducing the potential safety hazard of the automobile and improving the safety performance of the automobile. Which comprises a temperature sensor which is arranged on a shell at the position of a high-voltage plug-in for externally supplying power to a battery pack, and is characterized in that the temperature sensor is arranged at a preset position away from the mounting position of the plug-in and is used for monitoring the temperature of the high-voltage plug-in in real time; when the plug-in end of the high-voltage wiring harness of the whole vehicle and the socket of the high-voltage loop formed by the battery pack ...

Frequency offset correction circuit for WCDMA

Methods and apparatus for acquiring and verifying a code used by a base station. Acquisition time is reduced and circuitry simplified by performing Phase I and Phase II acquisitions in series, but in parallel with Phase III acquisition and verification, which are done in series. Phase III code acquisition is done by despreading the input signal using each of the possible codes in a code group. An estimation of the frequency offset between the base station and the terminal's local reference is used to correct the phase of the despread signals, which are coherently and non-coherently integrated. The largest accumulated value corresponds to the code used by the base station. The code is verified by despreading the received signal, applying a frequency correction, and demodulating. The demodulated output is a series of symbols, and a count of these symbols verifies the acquired code.

Method for base station controller to acquire state of packet control functional (PCF) entity

The invention provides a method for a base station controller to acquire state of a packet control functional (PCF) entity, which comprises that: the base station controller sends a state query message to each PCF entity connected with the base station controller; and after receiving the state query message, the PCF entity detects personal state, puts personal state information in a state response message, and returns the personal state information to the base station controller. The method enables the base station controller (BSC) to detect the state of the PCF entity in real time so as to provide basis for the BSC to select the PCF entity for user access call and prevent the BSC from accessing the user call to the failed PCF to cause call failure.

Equalizer training method using re-encoded bits and known training sequences

The present invention provides a multi-branch equalizer processing module operable to cancel interference associated with received radio frequency (RF) burst(s). This multi-branch equalizer processing module includes both a first equalizer processing branch and a second equalizer processing branch. The first equalizer processing branch is operable to be trained based upon known training sequences and equalize the received RF burst. This results in soft samples or decisions which in turn may be converted to data bits. The soft samples are processed with a de-interleaver and channel decoder, where the combination is operable to produce a decoded frame of data bits from the soft samples. A re-encoder may re-encode the decoded frame to produce re-encoded or at least partially re-encoded data bits. An interleaver then processes the at least partially re-encoded data bits to produce and at least partially re-encoded burst. The second equalizer processing branch uses the at least partially re-encoded ...

Pipeline architecture for multi-slot wireless link processing

A wireless communication device processes N Radio Frequency (RF) bursts contained within N slots of a digital communications time divided frame, wherein N is a positive integer greater than one. The wireless communication device includes an RF front end, a baseband processor, and an equalizer module. The RF front end is operable to receive the plurality of received RF bursts and to convert the RF bursts to corresponding baseband signals. The baseband processor is operable to receive the baseband signals, to pre-equalization process the baseband signals to produce processed baseband signals, and to post-equalization process soft decisions. The equalizer is operable to equalize the processed baseband signals to produce the soft decisions. These RF bursts may be contained in adjacent slots or, in non-adjacent slots, or in a combination of adjacent slots and non-adjacent slots.

Modified polyformaldehyde material for three-layer composite material

The invention relates to a modified polyformaldehyde material for a three-layer composite material, which comprises the following components in weight percentage: 64-93% of polyformaldehyde, 5-30% of metal powder and 2-6% of lubricating agent, wherein the metal powder is simplex powder or a mixture of flaky copper powder, copper alloy powder or zinc powder; the lubricating agent comprises simplex powder or a mixture of polytetrafluoroethylene, molybdenum disulfide or graphite; and the composite material can be prepared by extruding granulation by using the conventional double screw extruder for plastic processing. Compared with the prior art, the bearing made of the three-layer composite materials has the advantages of favorable thermal conduction, carrying capacity, wear resistance and the like.

Methods and Systems for Doppler Estimation and Adaptive Channel Filtering in a Communication System

A method for Doppler shift estimation for channel estimation of a received signal, comprising the steps of: calculating time domain correlations; providing a Hamming window over the calculated time domain correlations; calculating a power spectrum by using FFT; calculating an adaptive threshold based on a noise floor and an average power density calculated from the power spectrum; and estimating a Doppler shift based on the adaptive threshold.

Adjusting transmission parameters to support coexistence fairness

In some aspects, the disclosure is directed to methods and systems for coexistence management. A first access point operating in an unlicensed frequency band using a first RAT receives, from a second access point operating in the unlicensed frequency band using a second RAT, information regarding operation of the second access point in the unlicensed frequency band. It is determined, using the received information, that the first access point or the second access point is using a first share of the unlicensed frequency band that is below a predetermined threshold, indicating an imbalance of usage between the first RAT and the second RAT. A transmission parameter of the first access point for operating in the unlicensed frequency band using the first RAT is adjusted according to the determination. The first access point transmits the one or more packets using the adjusted transmission parameter, to cause the first access point or the second access point to use an updated share of the unlicensed ...

Intermodulation distortion testing method of high-power device

The invention provides an intermodulation distortion testing method of a high-power device. The intermodulation distortion testing method of the high-power device comprises the steps that (1) a testing device, a first power amplifier, a second power amplifier and a network analyzer are connected with a tested part, (2) passive intermodulation or active intermodulation of the tested part is tested, (3) the network analyzer displays the intermodulation testing result, when passive intermodulation is carried out, a transmission PIM test result and an emission PIM test result are displayed at the same time, and when active intermodulation is carried out, the dual-tone signal power and the IM power of a tested amplifier are displayed at the same time. According to the scheme, a system formed by a device can be used for measuring the passive intermodulation characteristics of passive microwave device components, antennas and antenna feeder systems, and the active intermodulation characteristics ...

Staged proportional power supply system and control method for railway yard

The invention discloses a staged proportional power supply system of a railway yard and a control method. The system comprises a power supply; a main switch; a lighting switch; the connecting circuit is connected between the main switch and the lighting switch; the voltage regulating device is arranged on the connecting circuit; the control unit is configured to control the first normally open contact to be closed, provide a first voltage to start, disconnect the first normally open contact, close the second normally open contact and provide a second voltage to operate if the sending end voltage is 220V; and if the sending end voltage is greater than 220V, the second normally open contact is controlled to be closed, a third voltage is provided for starting, the second normally open contact is disconnected, the third normally open contact is closed, and a fourth voltage is provided for running. An automatic control method is adopted to change a fixed power supply mode into a staged proportional ...

FAST LINK RE-SYNCHRONIZATION FOR TIME-SLICED OFDM SIGNALS

Methods having corresponding apparatus and computer-readable media comprise: receiving an estimated frame index, and an estimated symbol index, for a time-sliced OFDM signal; identifying a plurality of possible frame indexes, and a plurality of possible symbol indexes, based on the estimated frame index and the estimated symbol index; selecting a plurality of possible forward error correction code offsets based on the possible frame indexes and the possible symbol indexes; and selecting one of the possible frame indexes, and one of the possible symbol indexes, based on the possible forward error correction code offsets and a SYNC byte of the time-sliced OFDM signal.

Method of judging complex pilot frequency biasing

PIPELINE ARCHITECTURE FOR MULTI-SLOT WIRELESS LINK PROCESSING

A wireless communication device processes N Radio Frequency (RF) bursts contained within N slots of a digital communications time divided frame, wherein N is a positive integer greater than one. The wireless communication device includes an RF front end, a baseband processor, and an equalizer module. The RF front end is operable to receive the plurality of received RF bursts and to convert the RF bursts to corresponding baseband signals. The baseband processor is operable to receive the baseband signals, to pre-equalization process the baseband signals to produce processed baseband signals, and to post-equalization process soft decisions. The equalizer is operable to equalize the processed baseband signals to produce the soft decisions. These RF bursts may be contained in adjacent slots or, in non-adjacent slots, or in a combination of adjacent slots and non-adjacent slots.

System and method to extract uplink status flag bits in a cellular wireless network

Determining whether a first wireless terminal may transmit on an uplink to a servicing base station in a cellular wireless communication system includes first receiving a plurality of a Radio Frequency (RF) bursts at a wireless terminal from a servicing base station. These RF bursts carry a data block containing both Uplink Status Flag (USF) bits and Data bits. Data bits may or may not be intended for the receiving wireless terminal. The RF bursts are processed to produce the data block in an encoded format. This data block is then partially decoded to extract the USF bits when the data bits are not intended for the receiving wireless terminal. These USF bits determine when the receiving wireless terminal can transmit or uplink to the servicing base station. The partial decoding may be halted once the USF bits have been extracted from the received data block to reduce power consumption and processing requirements.

Passive intermodulation outlier quick locating method based on vector network analyzer

The invention provides a passive intermodulation outlier quick locating method based on a vector network analyzer. The vector network analyzer is used as two-path signal sources and a receiver (spectrum analyzer), two paths of testing signals enter a power amplifier module respectively, after amplification, a testing device is connected in to carry out combining, and 2 * 43dBm double-tone signals are formed and are loaded on a tested device. Reflection PIM signals pass through a filtering channel of the testing device, after filtering, PIM interference enters the network analyzer for measuring, and the amplitude and the phase are measured. According to the scheme, the quick locating function on a passive intermodulation outlier of the vector network analyzer can be achieved, the product added value of the current vector network analyzer is increased, locating can be carried out on an abnormal device according to a higher-order PIM product, and better adaptability is achieved on a system ...

An auto-regulation method on network time delay at ABIS mouth

The invention relates to a method for automatically adjusting time lag of an Abis interface network. A base station controller sends a front service frame based on primarily fixed and advanced frame numbers and adjusts the fixed and advanced frame numbers according to time adjusting information that exceeds preset threshold values between the base station controller and a base station transceiver, and the time adjusting information comprises but is not limited by PATE values. The method combines fixed advance and PATE adjustment, can self-adapt the time lag of the Abis interface network basedon not consuming too much CPU, thus improving tolerance ranges and calling success ratio of time lag variation.

Method for transmitting small-flow wireless data and base station system

The invention discloses a method for transmitting small-flow wireless data, which is applied to data service of a control channel in an SDB (Short Data Burst) mode and comprises the following steps of: firstly performing a called flow and a calling flow of the control channel in the SDB mode by a core network, a base station (BS) system and a terminal after the data service is started, and savinga current access cell message of the terminal, carried in a message, after the message which is originated in the SDB mode and sent by the terminal is received by the BS; and then directly determining a paging range of the terminal according to the access cell message during performing the called flow and the calling flow of the control channel in the SDB mode after the data service and when the access cell message is saved in a local memory by the BS, and upgrading the saved current access cell message of the terminal after the message which is originated in the SDB mode and sent by the terminal ...

Passive intermodulation (PIM) test method for pulse system

The invention provides a passive intermodulation (PIM) test method for a pulse system. Two paths of synchronously-adjustable pulse sources are taken as signal sources. Two paths of pulse signals enter a power amplification module, and are amplified to +43dBm (computed by using the port of a device under test). The two paths of pulse signals are combined into a double-tone pulse through a combiner, and the pulse is loaded to the device under test in order to excite a tested signal to generate PIM interference. A reflected PIM signal is isolated from the double-tone signal through a duplexer inside an instrument. The double-tone signal is absorbed by a load, and the tested PIM is received by a synchronized receiver. The scheme has the two advantages that (1) the size of a test instrument can be reduced greatly, and handheld PIM test becomes possible; and (2) power can be supplied by using batteries, so that the portability and environmental adaptability of the test instrument are enhanced ...

WIFI-coordinated LAA-LTE

A method includes detecting, using a WiFi access point, channel use data indicating traffic on a plurality of channels of an unlicensed LTE band in a wireless network. The method further includes providing the channel use data to a Long Term Evolution (LTE) access point. The method further includes selecting, using the LTE access point, a channel for use in transmitting data by the LTE access point from among the plurality of channels based on the channel use data from the WiFi access point. The method further includes providing, from the LTE access point, an indication of an upcoming transmission configured to transmit data on the channel to the WiFi access point. The method further includes broadcasting one or more messages from the WiFi access point to one or more WiFi nodes, the one or more messages configured to prevent the WiFi nodes from transmitting on the channel.

System and method to perform DC compensation on a radio frequency burst in a cellular wireless network

A method to perform DC compensation on a Radio Frequency (RF) burst transmitted between a servicing base station and a wireless terminal in a cellular wireless communication system that first receives the RF burst modulated according to either a first or second modulation format. Samples from the RF burst, or taken from the training sequence, are produced and averaged to produce a DC offset estimate. The DC offset estimate is then subtracted from each of the samples. The modulation format of RF burst may then be identified from the samples. Depending on the identified modulation format, the DC offset estimate may be re-added to the samples when a particular modulation format is identified as the modulation format of the RF burst. This decision is made based on how well various components within the wireless terminal perform DC offset compensation.

SNR-Based Variable-Threshold Majority-Logic Decoder

Apparatus having corresponding methods and tangible computer-readable medium embodying instructions executable by a computer to perform the methods comprise: a receiver adapted to receive a signal representing an input code block, wherein the input code block represents information encoded with a (N, K) difference-set cyclic code, wherein the input code block includes N symbols, and wherein the N symbols represent K bits of the information; an estimator adapted to estimate a signal-to-noise ratio of the signal; a raised-threshold majority-logic decoder adapted to decode the input code block according to a raised-threshold majority-logic decoding algorithm when the signal-to-noise ratio does not exceed a first predetermined threshold; and a variable-threshold majority-logic decoder adapted to decode the input code block according to a variable-threshold majority-logic decoding algorithm when the signal-to-noise ratio exceeds the first predetermined threshold.

一种判别复用导频偏置的方法

Suppose there are sector C1, C2, C3, A, and statistical numbers of switching happened in same time period from C1 to Aú¼C2 to Aú¼C3 to A are obtained and marked as C1Aú¼C2Aú¼C3A. If C1A is much larger than C2Aú¼C3A or both C2A and C3A is zero, then it is assured that n times of switching happened from A to pilot frequency bias PNl are the switching from A to C1. The invention uses number of backward switching to determine which sector the diplex pilot frequency bias is corresponded to. The invention makes heavy and bald procedure for optimizing a contiguous area list become simple and accuracy to increase efficiency and quality for optimizing network. The method is simple and without disadvantages of dependent on information of geographic coordinate provided by base station.

Call connection establishing method

The invention provides a method for setting up the call connection, comprising the following steps: a base station carries out the office-direction choice of MSC (Mobile Switching Center) by a cell identifying affiliation office-direction choice mode after receiving the call message from the terminal; the base station carries out the office-direction choice of MSC (Mobile Switching Center) by a balanced load office-direction choice mode when the cell identifying affiliation office-direction choice mode is failure; and the base station sets up the call connection with the MSC by the chosen office direction and further sets up the call connection between the terminal and the MSC after completing the office-direction choice of MSC. The invention can set up call connection in accordance with the compatibility, the calling success ratio, the link balanced load and the like.

Device and method of testing dual-frequency nonlinear vector network parameters

A device and method of testing the dual-frequency nonlinear vector network parameters. In view of the challenge of the nonlinear behavioral model characterization of the microwave device components, and the current situation of the nonlinear vector network parameter testing, the disclosed device and method of testing the dual-frequency nonlinear vector network parameters redefines the nonlinear model parameters of the nonlinear device components, gives the definition of the test parameter (W-parameter), solves the challenges of the dual-frequency nonlinear behavioral model characterization and testing for the microwave device components, and makes it more convenient to measure the nonlinear characteristics of the mixer, amplifier and passive device components.

Dynamic LTE signal detection

Systems and methods allow LAA LTE equipment to coexist with other services in the unlicensed band such as WIFI or WLAN services. Systems and methods use LTE reference signals in the unlicensed spectrum that are not continuous and can be interrupted by a WIFI signal or other services in the unlicensed band or use a dynamic LAA ON burst or window to provide the LTE reference signals in some embodiments. The systems and methods can detect the presence of LTE signals using a one or more of a number of techniques.

Method for implementing terminal access and improvement of terminal voice quality

The invention discloses a realizing method of both accessing a terminal and increasing terminal voice quality. The method comprises following steps: negotiating services between a terminal and a key station on a control communication channel and lowering the service quality according to capability levels of a supporting terminal which is corresponded with different coding and decoding algorithms by the key station and then enabling the terminal to be accessed into the key station according to the capability levels of the terminal from high to low. The method of the invention can both access the terminal and increase the terminal voice quality evenly, thereby old terminals with low terminal capability levels are accessed into a developed wireless communication system, and simultaneously the speech quality of majority of terminals with higher terminal capability levels can not be affected.

System and method to perform adaptive channel filtering on a radio frequency burst in a cellular wireless network

A method to perform adaptive channel filtering on a Radio Frequency (RF) bursts in a cellular wireless communication system. This method first filters an input signal with a first stage filter having a first bandwidth to produce a first stage output signal. Then the first stage output signal is filtered with a second stage filter having a second bandwidth narrower than that of the first stage filter to produce a multi-stage output signal. A comparison between first stage performance measurements and multi-stage performance measurements determine the mode of operation of the adaptive multistage filter. A first mode of operation, selected when the first stage performance measurement compares favorably with the second stage performance measurement, selects the output of the first stage filter as the output of the multi-stage filter. Otherwise, a second mode of operation selects the output of the second stage filter as the output of the multi-stage filter.

Licensed-Assisted Access (LAA) using Long Term Evolution (LTE) Protocols

The disclosure is directed systems and methods for providing robust coexistence for LAA-LTE, including physical layer enhancements and options to support robust coexistence for LAA-LTE, and deployment and evaluation scenarios and methods. 1. A method for coexistence of systems within an unlicensed transmission band , comprising:identifying, by a first device configured to transmit on an unlicensed band, a second device configured to transmit on the unlicensed band; andcoordinating, by the first device with the second device, a channel reservation to allow exclusive transmission by the first device;wherein the first device utilizes a fixed frame timing, and the second device utilizes a dynamic frame timing.2. The method of claim 1 , wherein coordinating the channel reservation further comprises:coordinating, by the first device with the second device, the channel reservation, the first device and the second device having a same probability of gaining access to a channel during a pre-specified period of time.3. The method of claim 2 , further comprising:transmitting, by the first device, an channel reservation indicator to the second device, comprising an encoded preamble, or a network allocation vector.4. The method of claim 1 , further comprising:determining, by the first device, a channel availability for the transmission.5. The method of claim 4 , wherein determining the channel availability further comprisesdetermining the channel availability responsive to an identifier in a preamble of a packet received from the second device, or a network allocation vector from the second device.6. The method of claim 1 , further comprising:organizing, by the first device, the transmission into a transmission window.7. The method of claim 6 , further comprising:aligning, by the first device, the transmission with a transmission time interval (TTI) boundary.8. The method of claim 6 , further comprising:varying, by the first device, a size and a duration of the transmission ...

Wifi-coordinated laa-lte

A method includes detecting, using a WiFi access point, channel use data indicating traffic on a plurality of channels of an unlicensed LTE band in a wireless network. The method further includes providing the channel use data to a Long Term Evolution (LTE) access point. The method further includes selecting, using the LTE access point, a channel for use in transmitting data by the LTE access point from among the plurality of channels based on the channel use data from the WiFi access point. The method further includes providing, from the LTE access point, an indication of an upcoming transmission configured to transmit data on the channel to the WiFi access point. The method further includes broadcasting one or more messages from the WiFi access point to one or more WiFi nodes, the one or more messages configured to prevent the WiFi nodes from transmitting on the channel.

DYNAMIC LTE SIGNAL DETECTION

Systems and methods allow LAA LTE equipment to coexist with other services in the unlicensed band such as WIFI or WLAN services. Systems and methods use LTE reference signals in the unlicensed spectrum that are not continuous and can be interrupted by a WIFI signal or other services in the unlicensed band or use a dynamic LAA ON burst or window to provide the LTE reference signals in some embodiments. The systems and methods can detect the presence of LTE signals using a one or more of a number of techniques. 1. A method comprising:detecting whether a sub-frame is provided at least partially as an LTE signal in an unlicensed spectrum; andprocessing for channel state information, cell measurement, timing estimates or frequency estimates if the sub-frame is provided at least partially as the LTE signal in the unlicensed spectrum.2. The method of claim 1 , further comprising:dropping the sub-frame if the sub-frame is not provided at least partially as the LTE signal in the unlicensed spectrum.3. The method of claim 2 , wherein dropping the sub-frame avoids improper estimations or measurements.4. The method of claim 1 , further comprising:determining if the sub-frame can be processed in response to the channel state information, the cell measurement, the timing estimates or the frequency estimates.5. The method of claim 4 , further comprising:processing the sub-frame if the channel state information, the cell measurement, the timing estimates or the frequency estimates indicates that the sub-frame can be processed.6. The method of claim 1 , wherein the sub-frame is provided at least partially as a secondary component carrier.7. A method comprising:detecting packet data control channel statistics or Viterbi statistics associated with received signal to determine whether the received signal is an LTE signal in an unlicensed spectrum; anddetecting whether a cyclical redundancy check associated with the packet data control channel statistics or Viterbi statistics passes for ...

COEXISTENCE MANAGEMENT VIA SCHEDULING

In some aspects, the disclosure is directed to methods and systems for coexistence management. A first access point is scheduled a time to begin transmission of a packet to a user device in an unlicensed frequency band using a first RAT. The time to begin the transmission is scheduled to avoid transmission overlap with a second access point using a second RAT in the unlicensed frequency band, and scheduled according to information from the second access point regarding operation in the unlicensed frequency band using the second RAT. One of the first and second RATs includes one of a WLAN RAT or a LTE based RAT, and another of the first and second RATs includes a remaining one of the WLAN RAT or the LTE based RAT, in one or more embodiments. The first access point receives updated information regarding operation in the unlicensed frequency band using the second RAT. Using the updated information, an updated time for the first access point to begin the transmission using the first RAT is determined, the updated time determined to avoid transmission overlap with the second RAT in the unlicensed frequency band. The first access point transmits, according to the determined updated time, the packet in the unlicensed frequency band using the first RAT. 1. A method for managing co-existence , the method comprising:scheduling, for a first access point, a time to begin transmission of a packet to a user device in an unlicensed frequency band using a first radio access technology (RAT), the time to begin the transmission scheduled to avoid transmission overlap with a second access point using a second RAT in the unlicensed frequency band, and scheduled according to information from the second access point regarding operation in the unlicensed frequency band using the second RAT, wherein one of the first and second RATs comprises one of a wireless local area network (WLAN) RAT or a long term evolution (LTE) based RAT, and another of the first and second RATs comprises a ...

ADJUSTING TRANSMISSION PARAMETERS TO SUPPORT COEXISTENCE FAIRNESS

In some aspects, the disclosure is directed to methods and systems for coexistence management. A first access point operating in an unlicensed frequency band using a first RAT receives, from a second access point operating in the unlicensed frequency band using a second RAT, information regarding operation of the second access point in the unlicensed frequency band. It is determined, using the received information, that the first access point or the second access point is using a first share of the unlicensed frequency band that is below a predetermined threshold, indicating an imbalance of usage between the first RAT and the second RAT. A transmission parameter of the first access point for operating in the unlicensed frequency band using the first RAT is adjusted according to the determination. The first access point transmits the one or more packets using the adjusted transmission parameter, to cause the first access point or the second access point to use an updated share of the unlicensed frequency band that is closer to the predetermined threshold than the first share. 1. A method for managing co-existence , the method comprising:receiving, by a first access point configured to operate in an unlicensed frequency band using a first radio access technology (RAT), from a second access point operating in the unlicensed frequency band using a second RAT, information regarding operation of the second access point in the unlicensed frequency band;determining, using the received information, that the first access point or the second access point is using a first share of the unlicensed frequency band that is below a predetermined threshold, indicating an imbalance of usage between the first RAT and the second RAT;adjusting, according to the determination, a transmission parameter of the first access point for operating in the unlicensed frequency band using the first RAT; andtransmitting, by the first access point, one or more packets using the adjusted transmission ...

Wifi-coordinated laa-lte

A method includes detecting, using a WiFi access point, channel use data indicating traffic on a plurality of channels of an unlicensed LTE band in a wireless network. The method further includes providing the channel use data to a Long Term Evolution (LTE) access point. The method further includes selecting, using the LTE access point, a channel for use in transmitting data by the LTE access point from among the plurality of channels based on the channel use data from the WiFi access point. The method further includes providing, from the LTE access point, an indication of an upcoming transmission configured to transmit data on the channel to the WiFi access point. The method further includes broadcasting one or more messages from the WiFi access point to one or more WiFi nodes, the one or more messages configured to prevent the WiFi nodes from transmitting on the channel.

DEVICE AND METHOD OF TESTING DUAL-FREQUENCY NONLINEAR VECTOR NETWORK PARAMETERS

A device and method of testing the dual-frequency nonlinear vector network parameters. In view of the challenge of the nonlinear behavioral model characterization of the microwave device components, and the current situation of the nonlinear vector network parameter testing, the disclosed device and method of testing the dual-frequency nonlinear vector network parameters redefines the nonlinear model parameters of the nonlinear device components, gives the definition of the test parameter (W-parameter), solves the challenges of the dual-frequency nonlinear behavioral model characterization and testing for the microwave device components, and makes it more convenient to measure the nonlinear characteristics of the mixer, amplifier and passive device components. 1. A device for testing dual-frequency nonlinear vector network parameters , the device comprising:a frequency reference module configured to generate two signal sources and a local oscillator signal source for sending a local oscillator signal to a receiver, the two signal sources being a first signal source and a second signal source;selector switches comprising a first selector switch, a second selector switch, a third selector switch, a fourth selector switch, a fifth selector switch, a sixth selector switch and a seventh selector switch;testing ports comprising a first testing port, a second testing port and a third testing port;multiplier selection units comprising a first multiplier selection unit and a second multiplier selection unit for realizing selection of pass-through, double, triple . . . n-tuple for the signals;receivers comprising an R receiver for providing a phase reference for the nonlinear testing, an R1 receiver for testing an output signal of the first signal source, an R2 receiver for testing the output signal of the second signal source, an A receiver for testing the signal entering the first testing port, a B receiver for testing the signal entering the second testing port, and a C ...

Methods and Systems for Impulse Noise Compensation for OFDM Systems

Methods and systems are provided to reduce the effects of impulse noise in decoding a received OFDM signal by reducing the bit error number in burst error positions and by reducing the impulse noise contribution to channel estimation. In order to reduce the performance degradation due to impulse noise, it is important to find the position or the OFDM symbol where impulse noise occurs. The high noise variance gain can then be used for a Viterbi decoder to reduce the bit error number in burst error position, and also to reduce the contribution of the channel estimation by impulse noise in future channel estimations. Accordingly, the performance of the system can be greatly improved.

System and method to determine a bit error probability of received data within a cellular wireless network

Methods for Modified Signal Acquisition for OFDM Schemes

This invention relates to methods for determining coarse symbol timing and mode detection by using CP correlation-based techniques. In particular, this invention relates to methods for determining symbol timing, frame timing, and system mode for signal acquisition, comprising the steps of: detecting symbol timing and system mode based on cyclic prefix correlation; and determining a null symbol as a function of a pre-defined number of consecutive symbols and using said null symbol to determine frame timing.

System and method to identify a modulation format of a data frame within a cellular wireless network

The modulation format of a data block (frame) received from a servicing base station by a wireless terminal in a cellular wireless communication system is identified. This involves first receiving several radio frequency (RF) bursts of one data block (frame) from the servicing base station. The RF burst carries a number of modulated symbols. The training sequence is extracted from the RF burst and is made of a number of modulated symbols. The training sequences are first processed assuming a first modulation format to produce a first accumulated channel energy. Then, the training sequences are processed assuming a second modulation format to produce a second accumulated channel energy. The first and second accumulated channel energies are compared to determine which accumulated channel energy is greater. The modulation format of the data block is identified as the modulation format corresponding to the greater accumulated channel energy.

Fast link re-synchronization for time-sliced ofdm signals

Methods having corresponding apparatus and computer-readable media comprise: receiving an estimated frame index, and an estimated symbol index, for a time-sliced OFDM signal; identifying a plurality of possible frame indexes, and a plurality of possible symbol indexes, based on the estimated frame index and the estimated symbol index; selecting a plurality of possible forward error correction code offsets based on the possible frame indexes and the possible symbol indexes; and selecting one of the possible frame indexes, and one of the possible symbol indexes, based on the possible forward error correction code offsets and a SYNC byte of the time-sliced OFDM signal.

Multi-branch equalizer processing module for interference cancellation within a wireless terminal

The present invention provides a multi-branch equalizer processing module operable to cancel interference associated with received radio frequency (RF) burst(s). This multi-branch equalizer processing module includes both a first equalizer processing branch and a second equalizer processing branch. The first equalizer processing branch is operable to be trained based upon known training sequences and equalize the received RF burst. This results in soft samples or decisions which in turn may be converted to data bits. The soft samples are processed with a de-interleaver and channel decoder, where the combination is operable to produce a decoded frame of data bits from the soft samples. A re-encoder may re-encode the decoded frame to produce re-encoded or at least partially re-encoded data bits. An interleaver then processes the at least partially re-encoded data bits to produce and at least partially re-encoded burst. The second equalizer processing branch uses the at least partially re-encoded data bits to train linear equalizer(s) within the second equalizer processing branch. A buffer may initially store the received RF burst(s), which are retrieved and equalized by the second equalizer processing branch once the linear equalizer(s) are trained. This results in alternate soft samples or decisions which in turn may be converted to alternate data bits. The alternate soft samples are processed with the de-interleaver and channel decoder, where the combination is operable to produce an alternate decoded frame of data bits from the alternate soft samples. This allows interfering signals to be cancelled and more accurate processing of the received RF bursts to occur.

Multi-branch equalizer processing module with selective disabling of interference cancellation within a wireless terminal

This invention provides channel dispersion estimation algorithm(s). This channel dispersion estimation algorithm(s) may be implemented within a channel length estimation module of a single-branch or multi-branch equalizer processing module that enables interference cancellation when the channel length or channel delay spread associated with received radio frequency (RF) bursts compares unfavorably to predetermined thresholds. The channel dispersion estimation algorithm identifies when the radio frequency (RF) bursts have a channel length or channel delay spread that can affect receiver performance. The channel length estimation module may disable interference cancellation in response to such a channel length or channel delay spread. Additionally, the channel length estimation module may adjust the number of equalizer states for the single-branch or first branch of a multi-branch equalizer based the channel length or channel delay spread. The multi-branch equalizer improves the signal-to-noise ratio by improving the equalization by selectively disabling interference cancellation and adjusting the number of equalizer states for the single-branch or first branch equalizer.

Coexistence management via scheduling

In some aspects, the disclosure is directed to methods and systems for coexistence management. A first access point is scheduled a time to begin transmission of a packet to a user device in an unlicensed frequency band using a first RAT. The time to begin the transmission is scheduled to avoid transmission overlap with a second access point using a second RAT in the unlicensed frequency band, and scheduled according to information from the second access point regarding operation in the unlicensed frequency band using the second RAT. One of the first and second RATs includes one of a WLAN RAT or a LTE based RAT, and another of the first and second RATs includes a remaining one of the WLAN RAT or the LTE based RAT, in one or more embodiments. The first access point receives updated information regarding operation in the unlicensed frequency band using the second RAT. Using the updated information, an updated time for the first access point to begin the transmission using the first RAT is determined, the updated time determined to avoid transmission overlap with the second RAT in the unlicensed frequency band. The first access point transmits, according to the determined updated time, the packet in the unlicensed frequency band using the first RAT.

Frequency offset correction circuit for WCDMA

Methods and apparatus for acquiring and verifying a code used by a base station. Acquisition time is reduced and circuitry simplified by performing Phase I and Phase II acquisitions in series, but in parallel with Phase III acquisition and verification, which are done in series. Phase III code acquisition is done by despreading the input signal using each of the possible codes in a code group. An estimation of the frequency offset between the base station and the terminal's local reference is used to correct the phase of the despread signals, which are coherently and non-coherently integrated. The largest accumulated value corresponds to the code used by the base station. The code is verified by despreading the received signal, applying a frequency correction, and demodulating. The demodulated output is a series of symbols, and a count of these symbols verifies the acquired code.

Anpassen von Übertragungsparametern zur Unterstützung der Koexistenzgerechtigkeit

Verfahren zum Verwalten einer Koexistenz, wobei das Verfahren Folgendes umfasst:Empfangen, durch einen ersten Zugangspunkt, der so konfiguriert ist, dass er unter Verwendung einer ersten RAT (Radio Access Technology, Funkzugangstechnologie) in einem lizenzfreien Frequenzband betrieben wird, von Informationen von einem in dem lizenzfreien Frequenzband unter Verwendung einer zweiten RAT betriebenen, zweiten Zugangspunkt bezüglich des Betriebs des zweiten Zugangspunkts in dem lizenzfreien Frequenzband;Bestimmen, unter Verwendung der empfangenen Informationen, dass der erste Zugangspunkt oder der zweite Zugangspunkt einen ersten, unterhalb eines vorbestimmten Schwellenwerts liegenden Anteil des lizenzfreien Frequenzbands nutzt, was ein Ungleichgewicht der Nutzung zwischen der ersten RAT und der zweiten RAT angibt, wobei das Bestimmen in einem der folgenden Elemente durchgeführt wird: in einem zentralen Lastverteiler für die erste und die zweite RAT, in einem verteilten Lastverteilungssystem, das wenigstens eine in der ersten RAT betriebene Vorrichtung und wenigstens eine in der zweiten RAT betriebene Vorrichtung aufweist, oder in einem in wenigstens einer von der ersten RAT und der zweiten RAT betriebenen Benutzerendgerät.

Anpassen von Übertragungsparametern zur Unterstützung der Koexistenzgerechtigkeit

Verfahren zum Verwalten einer Koexistenz, wobei das Verfahren Folgendes umfasst:Empfangen, durch einen ersten Zugangspunkt, der so konfiguriert ist, dass er unter Verwendung einer ersten RAT (Radio Access Technology, Funkzugangstechnologie) in einem lizenzfreien Frequenzband betrieben wird, von Informationen von einem in dem lizenzfreien Frequenzband unter Verwendung einer zweiten RAT betriebenen, zweiten Zugangspunkt bezüglich des Betriebs des zweiten Zugangspunkts in dem lizenzfreien Frequenzband;Bestimmen, unter Verwendung der empfangenen Informationen, dass der erste Zugangspunkt oder der zweite Zugangspunkt einen ersten, unterhalb eines vorbestimmten Schwellenwerts liegenden Anteil des lizenzfreien Frequenzbands nutzt, was ein Ungleichgewicht der Nutzung zwischen der ersten RAT und der zweiten RAT angibt;Anpassen eines Übertragungsparameters des ersten Zugangspunkts für den Betrieb in dem lizenzfreien Frequenzband unter Verwendung der ersten RAT, entsprechend der Bestimmung; undÜbertragen eines oder mehrerer Pakete, unter Verwendung des angepassten Übertragungsparameters, durch den ersten Zugangspunkt, um den ersten Zugangspunkt oder den zweiten Zugangspunkt zu veranlassen, einen aktualisierten Anteil des lizenzfreien Frequenzbands zu nutzen, der näher bei dem vorbestimmten Schwellenwert liegt als der erste Anteil.

Innovative soil water-retaining agent and preparation method thereof

Selectively disabling interference cancellation ba

Organic waste rapid fermentation treatment device

Über WIFI Koordiniertes LAA-LTE

Verfahren, das Folgendes umfasst:Empfangen von Kanalnutzungsdaten zur Angabe des Datenverkehrs auf einer Vielzahl von Kanälen eines lizenzfreien LTE-Bandes in einem drahtlosen Netz von einem WiFi-Zugangspunkt an einem LTE-Zugangspunkt (Long Term Evolution);Auswählen, unter Verwendung des LTE-Zugangspunkts, eines Kanals aus der Vielzahl von Kanälen auf der Grundlage der Kanalnutzungsdaten von dem WiFi-Zugangspunkt zur Nutzung beim Übertragen von Daten durch den LTE-Zugangspunkt; undBereitstellen einer Angabe einer bevorstehenden Übertragung auf dem ausgewählten Kanal des lizenzfreien LTE-Bandes von dem LTE-Zugangspunkt an den WiFi-Zugangspunkt.

Multi-branch equalizer processing module for interference cancellation within a wireless terminal

Device and method for testing dual-band nonlinear vector network parameter

System and method to perform DC compensation on a radio frequency burst in a cellular wireless network

A method to perform DC compensation on a Radio Frequency (RF) burst transmitted between a servicing base station and a wireless terminal in a cellular wireless communication system that first receives the RF burst modulated according to either a first or second modulation format. Samples from the RF burst, or taken from the training sequence, are produced and averaged to produce a DC offset estimate. The DC offset estimate is then subtracted from each of the samples. The modulation format of RF burst may then be identified from the samples. Depending on the identified modulation format, the DC offset estimate may be re-added to the samples when a particular modulation format is identified as the modulation format of the RF burst. This decision is made based on how well various components within the wireless terminal perform DC offset compensation.

Disposable Bag Toilet

personal disposable bag toilet includes: a toilet bag(Figure1) and a shed curtain privacy protection (Figure2). The toilet bag includes a main bag 1 and a partition pad. The main bag as a human waste catchment is a bag column made of environmental safe plastic film like material with both top and bottom ends open. A tie 12 near the bottom edge to close the bottom open before use and a tie 11 near the top edge to close the top open after the main bag stuffed with human waste. A main bag air breather10 is located below the partition pad front side. The breather and the two ties are jointed by thermal / adhesive to the main bag. The partition pad includes a pad ring 2 featuring with a front ear9 and a sticker8 attached to it’s inside surface, and a back ear 6 with a sticker 7 to the back ear inside surface. The front ear sticker to fit a person’s lower belly and the back one’s to the person’s lower hip. Both ears featuring with strap holes one each for optional waist strap application. The pad ring is made of environment safe strong elastic material around a partition 3 outline periphery on the partition top surface and is settled between legs thigh root grooves when the bag toilet in use. A urine channel 4 is an ellipse shaped funnel column for guiding urine to the main bag and a faeces channel 5 ellipse shaped funnel column for faeces 2 guide. The partition is to separate the main bag into a waste catchment area and a outside area. The two channels, the pad ring are jointed to the partition, then the partition is jointed to the main bag by thermal/adhesive. The partition and both channels are made of the same material as the main bag. bottom ends open. A tie 12 near the bottom edge to close the bottom open before use and a tie 11 near the top edge to close the top open after the main bag stuffed with human waste. A main bag air breather10 is located below the partition pad front side. The breather and the two ties are jointed by thermal / adhesive to the main bag. ...

Emlsr secondary channel operation

Systems, methods, and mechanisms for secondary channel (SC) operation enhancements for enhanced multilink single-radio (eMLSR). An access point may transmit, to one or more wireless stations, one or more ICFs that may indicate that eMLSR-SC capable wireless stations are to switch to a secondary channel. The ICFs may be transmitted on a primary channel and one or more secondary channel(s). Further, the ICF may include a user information field that may include a resource unit index and a bandwidth index that in combination indicate that eMLSR-SC capable wireless stations are to switch to an indicated secondary channel. In addition, the access point may receive, from at least one wireless station of the one or more wireless stations, an IR frame that may indicate that the at least one wireless station has switched to the indicated secondary channel. Additionally, the access point may communicate on the secondary channel with the at least one wireless station.