Entries |
Document | Title | Date |
20080205306 | COMMUNICATION APPARATUS AND CONTROL METHOD THEREOF - There is provided a communication apparatus that includes: a data communication unit which performs half-duplex communication of video frame data with an external device on a video frame-by-video frame basis, a switching unit which switches a transmission direction in which the data communication unit transmits the video frame data, a first control unit which controls the data communication unit to include a start command in the video frame data and send the video frame data, as well as controls the switching unit to switch the transmission direction in response to completion of the sending of the video frame data that includes the start command, and a second control unit which controls the switching unit to switch the transmission direction in response to completion of the reception of the video frame data that includes the start command. | 08-28-2008 |
20080247341 | DIGITAL VIDEO INTERFACE WITH BI-DIRECTIONAL HALF-DUPLEX CLOCK CHANNEL USED AS AUXILIARY DATA CHANNEL - A digital video interface system and method for communicating digital video data from a source device to a sink device is provided, where the clock channel is used to transmit data as well as clock signals in a bi-directional, half-duplex manner using time division multiplexing. The digital video interface system comprises one or more data channels configured to transmit digital video data from the source device to the sink device in time divisional multiplexing including a plurality of first time slots and second time slots, and a clock channel configured to transmit a clock signal from the source device to the sink device in the first time slots and configured to transmit additional data from the source device to the sink device or from the sink device to the source device in the second time slots. | 10-09-2008 |
20080279126 | MANAGING DISTRIBUTED ACCESS TO A SHARED MEDIUM - Communicating between stations in a network is described. A plurality of stations coordinate according to a distributed protocol to select a first station to transmit over a shared medium. The communication includes transmitting between the first station and a second station over the shared medium during a time period in which stations other than the first and second stations refrain from transmitting over the shared medium. The first station transmits information that grants permission to the second station to transmit during the time period. | 11-13-2008 |
20080316947 | METHOD AND APPARATUS FOR 3G LTE FDD and TDD DETECTION USING REFERENCE SIGNAL CORRELATION - A method and apparatus for use in a wireless communication system to detect frequency division duplex (FDD) or time division duplex (TDD) after the radio timing and cell group ID have been determined from the S-SyS during a cell search, by correlating reference symbols (RSs) and detecting whether the RSs are on resource elements corresponding to FDD or TDD. By correlating the known RS, which is known after the cell ID is detected, to the assumed RS positions for FDD or TDD, the duplex form is detected. | 12-25-2008 |
20080316948 | Time division duplex front end module - An RF module adapted for direct surface mounting to the top surface of the front end of the motherboard of a wireless base station such as, for example, a femtocell. The module comprises a printed circuit board having a plurality of direct surface mounted electrical components defining respective signal transmit and receive sections for RF signals. The signal transmit section is defined by at least a power amplifier, a coupler, and a lowpass filter. The signal receive section is defined by at least a receive bandpass filter and a low-noise amplifier. A lid covers selected ones of the electrical components except for at least the power amplifier. An RF switch is located between and interconnects the respective transmit and receive sections to an antenna pin. | 12-25-2008 |
20090046607 | AUTOMATIC GAIN CONTROL APPARATUS AND METHOD IN WIRELESS TELECOMMUNICATION SYSTEM BASED ON TIME DIVISION DUPLEX - Disclosed is an apparatus and a method for controlling automatic gain in a wireless communication system using a Time Division Duplex (TDD) scheme. The apparatus comprises a power detecting unit for detecting a power of a TDD frame signal on a receive path; an Automatic Gain Control (AGC) synchronizing signal generating unit for generating an AGC synchronizing signal enabled or disabled either during a Down Link (DL) frame or during an Up Link (UL) frame of a TDD frame; an automatic gain calculating unit for calculating a gain control value based on the power detected by the power detecting unit either during the DL frame or during the UL frame of the TDD frame in response to the AGC synchronizing signal; and an AGC unit for performing gain control for the TDD frame signal on the receive path on the basis of the calculated gain control value. Hence, as AGC is performed during only an actual receive frame, the optimized demodulation performance can be maintained. | 02-19-2009 |
20090161586 | TRANSMITTER-RECEIVER - There is provided a transmitter receiver apparatus in which a directional coupler and single pole double throw (SPDT) switches are includes on the reception side. In the directional coupler, a reception signal is inputted and split into two signals having phases different from each other by 90° and the two split signals are outputted to SPDTs. Each of the SPDTs outputs each of the split signals to an output terminal connected to an amplifier during a passage mode and to a terminal terminated with a predetermined impedance during a blocking mode. | 06-25-2009 |
20090219842 | METHOD OF COMMUNICATION USING FRAME - A device and method for communicating by a mobile communication terminal in communication with a base station. The method according to an embodiment includes exchanging a frame of data with the base station. The frame of data includes a) a plurality of first subframes each having a first number of orthogonal frequency division multiple access (OFDMA) symbols, and b) a plurality of second subframes each having a second number of orthogonal frequency division multiple access (OFDMA) symbols different from the first number. A first and a last subframe each includes one of the plurality of first subframes. | 09-03-2009 |
20090245147 | System for Maintaining Synchronization Between Multiple Asynchronous Communication Links - An apparatus for maintaining synchronization with a plurality of asynchronous communication links includes a first counter that generates a first local network clock, and a second counter that generates a second local network clock. The apparatus also includes an offset controller coupled with the first counter and coupled with the second counter, the offset controller configured to load a current network clock value of a first network clock of a first communication link into the first counter, and to load a current network clock value of a second network clock of a second communication link into the second counter. The apparatus further includes a drift controller coupled with the first counter and with the second counter, the drift controller configured to correct a drift between the first local network clock and the first network clock and to correct a drift between the second local network clock and the second network clock. The first local network clock approximates the first network clock of the first communication link and the second local network clock approximates the second network clock of the second communication link. | 10-01-2009 |
20090296611 | Broadband Network for Coaxial Cable Using Multi-carrier Modulation - A broadband local area data network uses coaxial cable wiring for interconnection of terminal devices. Orthogonal frequency division multiplexing (OFDM) with bit loading is used to overcome channel impairments and provide a path for terminal devices to transmit to and receive from other terminal devices. Probe messages are sent between devices to characterize the communication channel and determine optimum bit loading. The data network shares the cable spectrum with other services and uses frequency bands not used by other services. Adaptive power control can be used to maintain signal to noise ratio in a communication between terminal devices. Frequency coordination can be used to avoid interference between the LAN communications and other services transmitted on the cable. | 12-03-2009 |
20090310523 | METHOD AND SYSTEM FOR TIME DIVISION DUPLEX HUM NOISE CANCELLATION - Methods and systems for TDD hum noise cancellation are disclosed and may include correlating a received audio signal to a time division duplexed (TDD) envelope signal, controlling a feedback signal based on the correlating, and cancelling a TDD noise signal via the feedback signal. The amplitude and delay of the feedback signal may be configured for controlling. A least mean square (LMS) filter may be utilized for the correlating and may include a finite impulse response filter. The TDD envelope signal may be generated on the chip or may be received from a source external to the chip. The feedback signal may be added to the received audio signal for the cancelling. | 12-17-2009 |
20090316611 | METHOD AND APPARATUS FOR FRAME DETECTION IN A COMMUNICATIONS SYSTEM - A method of determining a boundary of a subframe in a time division duplexing (TDD) system is provided. The method detects a power level of a signal on at least one radio frequency, the signal comprising at least one subframe. A time-domain correlation is done on the detected signal with a first reference signal, wherein the first reference signal represents at least one subframe. The location in time of a boundary of the at least one subframe of the detected signal is determined based on the correlation of the detected signal and the first reference signal. | 12-24-2009 |
20100039967 | SYSTEMS AND METHODS FOR TERRESTRIAL REUSE OF CELLULAR SATELLITE FREQUENCY SPECTRUM IN A TIME-DIVISION DUPLEX AND/OR FREQUENCY-DIVISION DUPLEX MODE - A space-based component, such as a satellite, is configured to receive wireless communications from radiotelephones in a satellite footprint over an uplink satellite radiotelephone frequency, and to transmit wireless communications to the radiotelephones over a downlink radiotelephone frequency. An ancillary terrestrial network, that may include one or more ancillary terrestrial components, is configured to transmit wireless communications to, and receive wireless communications from, the radiotelephones over the uplink satellite radiotelephone frequency in a time-division duplex mode. An interference reducer is configured to reduce interference from the wireless communications that are received by the space-based component from the second radiotelephone and/or from the ancillary terrestrial network over the uplink satellite radiotelephone frequency, using the wireless communications that are transmitted by the ancillary terrestrial to, and/or received by the ancillary terrestrial network from, the second radiotelephone over the uplink satellite radiotelephone frequency. | 02-18-2010 |
20100054164 | Random Linear Network Coding for Time Division Duplexing - A new random linear network coding scheme for reliable communications for time division duplexing channels is proposed. The setup assumes a packet erasure channel and that nodes cannot transmit and receive information simultaneously. The sender transmits coded data packets back-to-back before stopping to wait for the receiver to acknowledge (ACK) the number of degrees of freedom, if any, that are required to decode correctly the information. Provided herein is an analysis of this problem to show that there is an optimal number of coded data packets, in terms of mean completion time, to be sent before stopping to listen. This number depends on the latency, probabilities of packet erasure and ACK erasure, and the number of degrees of freedom that the receiver requires to decode the data. This scheme is optimal in terms of the mean time to complete the transmission of a fixed number of data packets. It is shown that its performance is very close to that of a full-duplex system, while transmitting a different number of coded packets can cause large degradation in performance, especially if latency is high. Also described herein is the throughput performance of the novel system and technique along with a comparison to existing half-duplex Go-back-N and Selective Repeat ARQ schemes. Numerical results, obtained for different latencies, show that the novel system and technique described herein has similar performance to the Selective Repeat in most cases and considerable performance gain when latency and packet error probability is high. | 03-04-2010 |
20100067412 | TTI BUNDLING IN A RANDOM ACCESS PROCEDURE - Systems and methodologies are described that facilitate effectuating a random access procedure in a wireless communication environment. A random access preamble can be sent from an access terminal to a base station, and a random access response can be sent from the base station to the access terminal in response. The random access response can allocate resources to be utilized by the access terminal for a scheduled transmission (e.g., message | 03-18-2010 |
20100097965 | DATA COMMUNICATION CONTROL - A femtocell base station apparatus may sense a wireless propagation environment around the femtocell base station apparatus to obtain wireless propagation environment information, transmit first control information including the wireless propagation environment information to at least one master base station adjacent to the femtocell base station apparatus, receive second control information from the at least one master base station, and control data communication performed between the femtocell base station apparatus and a mobile terminal based on the second control information. | 04-22-2010 |
20100177670 | RESOURCE ALLOCATION IN A COMMUNICATION SYSTEM - The disclosure relates to resource allocation. In accordance with the disclosed method first information regarding a first direction of a duplex communication link and second information regarding a second direction of the duplex communication link is provided for a node. The first information and the second information are processed, and channel resources are allocated for the first direction and the second direction of the duplex communication link based at least partially on said processing. | 07-15-2010 |
20100226295 | METHOD, DEVICE, AND TERMINAL FOR PHYSICAL LAYER RANDOM ACCESS IN WIDEBAND TDD MOBILE COMMUNICATION SYSTEM - A method for physical layer random access in wideband TDD mobile communication system is disclosed, and the method comprises: receiving the system broadcast message of the cell, obtaining the configuration information of the frequency band in frequency domain in the UpPTS time slot of the cell; and the terminal sends random access sequences to the BS in the UpPTS time slot according to the configuration information of the frequency band in the UpPTS time slot. The configuration information of the frequency band in frequency domain in the UpPTS time slot comprises the information about the frequency band number that the total bandwidth used is divided in the UpPTS time slot, the information about the bandwidth size of each frequency band, and the information about the position of the frequency point. Phod, device and terminal for physical layer random access in wideband TDD mobile communication system provided in the present invention can use the frequency bands whose time slots are different to perform network access, which can reduce the competition and collision probability when sending random access sequences, and can realize an efficient random access procedure. | 09-09-2010 |
20100226296 | RANGE EXTENSION FOR TIME DIVISION DUPLEX SYSTEMS - A method of scheduling time division duplex frames at a base station in a time division duplex system is provided. The method includes determining if the round-trip propagation delay between the base station and a communicatively coupled subscriber station is greater than the difference between the base station turn-around time and the minimum allowed subscriber station turn-around time, and modifying time slots in a time division duplex frame being sent to the subscriber station over a communication link to extend the range of signals sent from the base station. | 09-09-2010 |
20100246457 | PRE-CODING/PRE-DECODING METHOD AND APPARATUS FOR DATA TRANSMISSION IN MOBILE COMMUNICATION SYSTEM - A pre-coding/decoding method and apparatus for data transmission between a transmitting end and a receiving end is provided. The pre-coding method for data transmission through Time Division Duplexing (TDD) in a mobile communication system includes estimating downlink channel state information based on an uplink sounding signal, and pre-coding a data symbol and a reference signal based on the estimated downlink channel state information. | 09-30-2010 |
20100265857 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING MULTIMEDIA BROADCAST MULTICAST SERVICES - The present invention discloses a method for transmitting multimedia broadcast multicast services, comprising the following steps: a Time Division Duplex system divides a time slot for bearing multimedia broadcast multicast services into code channels; each multimedia broadcast multicast service to be transmitted is borne on a corresponding divided code channel, and is transmitted to a user equipment based on the single frequency network mode of the multimedia broadcast multicast service. The present invention also discloses a method for receiving multimedia broadcast multicast services, and apparatus for transmitting and receiving multimedia broadcast multicast services, such that time slot resources for bearing multimedia broadcast multicast services are utilized more sufficiently. | 10-21-2010 |
20100284313 | FRAME SWITCHING DEVICE - A frame switching device for an AFDX network, the device including a first port, configured to be connected to a frame switch of the network or else to a terminal, for example a computer, and a plurality of second ports configured to be respectively connected to on-board pieces of equipment. Each frame incident on the first port is replicated on each of the second ports. The second ports are periodically polled in turn, each frame present on a second polled port being transferred onto the first port. | 11-11-2010 |
20100290376 | Method for sending physical downlink control channel signals in downlink pilot time slot - A method for sending physical downlink control channel (PDCCH) signals in downlink pilot time slots (DwPTS) comprises: a base station (BS) transmits the PDCCH signals on one or more symbols in the DwPTS, and resources used for transmitting the PDCCH signals are different from resources used for transmitting primary synchronization signals of synchronization signals. In the present invention, the method for sending the PDCCH signals can solve the problem of conflict between the PDCCH and the primary synchronization signals in the DwPTS by generating a less delay and less impact on other channels. | 11-18-2010 |
20100315978 | SYSTEM AND METHOD FOR PROVIDING EXTERNAL RECEIVER GAIN COMPENSATION WHEN USING AN ANTENNA WITH A PRE-AMPLIFIER - In various embodiments, a system and method for improving a noise figure (NF) of a time division duplex (TDD) communications system includes a pre-amplified antenna unit having a plurality of antennas and associated low-noise amplifiers (LNA). Each of the associated LNA's is arranged to receive signals from a phase-matched pair of antennas selected from the plurality of antennas. For each of the phase-matched antenna pairs, a variable negative gain circuit may be coupled to a TDD signal output of the associated LNA such that a remote radio head (RRH) may be suitably coupled to an output of the variable gain circuit. The variable gain circuit is configured to provide a negative gain to the TDD signal appropriate to ensure that a dynamic range of the RRH is not reduced from a desired dynamic range due to excess gain provided by the LNA. A method of retrofitting a conventional pre-amplified antenna unit includes inserting a variable negative gain circuit so that the modified pre-amplified antenna may be used with any vendor's RRH. | 12-16-2010 |
20110013545 | TDD COMMUNICATION APPARATUS AND OPERATION METHOD THEREOF - A Time Division Duplex (TDD) communication apparatus and an operation method thereof can provide operation clock signals in the transmission and reception of the TDD communication apparatus using a Clock Recovery & Data Retiming (CDR) circuit, thereby stabilizing an operation without any crystal oscillator and reducing the power consumption. In a transmission time interval, a transmitting frame is processed using a clock signal of a reference frequency generated from the CDR circuit. In a reception time interval, a receiving frame is processed using a clock signal recovered from the receiving frame by the CDR circuit. | 01-20-2011 |
20110013546 | METHOD FOR SENDING A SOUNDING REFERENCE SIGNAL OF UPLINK CHANNEL IN A TIME DIVISION DUPLEX SYSTEM - A method for sending a sounding reference signal (SRS) of uplink channel in a time division duplex system is provided, a terminal calculates the parameters of the resource for sending an SRS in an uplink pilot time slot (UpPTS) according to the configuration information related to the sounding reference signal (SRS) of the uplink channel, the parameters include the frequency domain start position of the resource, and then the SRS is sent over the resource; wherein when the frequency domain start position of the resource is calculated, it is necessary to determine the index of the first sub-carrier in the maximum SRS bandwidth; the terminal determines the index according to the frequency domain position of one PRACH or that of more PRACHs in the uplink pilot time slots, when the PRACH includes the sub-carrier at the lower boundary of the system bandwidth, the upper boundary of the system bandwidth is used as the end position of the maximum SRS bandwidth and the start position of the maximum SRS bandwidth is calculated; and when the PRACH includes the sub-carrier at the upper boundary of the system bandwidth, the lower boundary of the system bandwidth is used as the start position of the maximum SRS bandwidth, and then the index is determined through the start position of the maximum SRS bandwidth plus the offset parameter configured for the terminal. With the sending position of the maximum SRS bandwidth in the UpPTS, which is obtained by the method of the present invention, the interference between the SRS signal and the PARCH can be avoided, and it is possible to implement the channel sounding for more bandwidth. | 01-20-2011 |
20110026444 | METHOD FOR FEEDING BACK CONFIRMATION INFORMATION ON A PHYSICAL UPLINK SHARED CHANNEL - A method for feeding back confirmation information on a physical uplink shared channel, this method includes: an eNodeB carries, in downlink control information, a number value of the downlink sub-frame corresponding to the confirmation information which is fed back by one uplink sub-frame, and transmits data on a plurality of continuous downlink sub-frames after the sub-frame carrying the downlink control information (S | 02-03-2011 |
20110026445 | Method for configuring and indicating Physical Random Access Channel PRACH parameters in a Time Division Duplex system - The present invention discloses a method for configuring and indicating physical random access channel parameter in a time division duplex system, suitable for the long term evolution, system, including: the same PRACH configuration set is stored in a base station and a terminal respectively; when performing a PRACH configuration, the terminal inquires the PRACH configuration set according to configuration information to obtain a configuration parameter, and/or the terminal computes to obtain the configuration parameter according to a system parameter. Set by using the method provided by the present invention, the PRACH configuration set can provide enough density types for various PRACH formats in order to meet the requirements of different system loads, and meanwhile can provide enough version types for each combination of format and density, decrease the processing load of the base station, and reduce the inter-cell interference. | 02-03-2011 |
20110032854 | SYSTEM AND METHOD FOR TDD/TMA WITH HYBRID BYPASS SWITCH OF RECEIVING AMPLIFIER - An arrangement of hybrid couplers, selectively removing RF amplifiers from a receiving path from an antenna back to a receiver in response to an event, the event switching impedances of switchable impedances connecting to ports of the hybrid couplers, between a matching impedance and mismatching impedance. The matching and mismatching impedances change coupling characteristics of the hybrid couplers between a normal coupling and a bypass coupling. In the normal coupling the hybrid couplers provide port-to-port coupling placing the RF amplifiers within the receiving path and, in the bypass coupling, the hybrid couplers provide port-to-port coupling bypassing the RF amplifiers. Optionally, transmitted signal power is detected to identify transmit and receiving intervals. During detected transmit intervals, isolation switches isolate the RF amplifiers from the feedback path and, during receiving intervals and, during detected receiving intervals, the isolation switches RF amplifiers into the feedback path to amplify reception signals. Optionally a hybrid coupler switch is placed between the two circulators to increase the isolation in the RX mode reducing feedback to the LNA's. | 02-10-2011 |
20110032855 | METHOD OF COMMUNICATING ACCORDING TO TIME DIVISION DUPLEX - The present invention provides a method of performing communication using a TDD (Time Division Duplex) mode, the method comprising receiving, from a second system, TDD frame configuration information of the second system, which comprises information on punctured symbol, the information on punctured symbol to be obtained based on TDD frame configuration information of a first system and operating based on the received TDD frame configuration information of the second system. | 02-10-2011 |
20110044217 | SYSTEM AND METHOD FOR TRANSFERRING DATA OVER FULL-DUPLEX DIFFERENTIAL SERIAL LINK - A data transmission technique where high speed data is transmitted differentially in a forward channel by way of a serial link, and relatively low speed data is differentially modulated onto the forward channel signal for transmission in a reverse channel via the link. By utilizing differential modulation in both forward and reverse channels, the resulting signal has a common mode voltage that is substantially constant, resulting in low EMI. The spectral content of the signal associated with the high speed data may be substantially non-overlapping with the spectral content of the signal associated with the low speed data. This facilitates the recovery of the high speed data and low speed data with minimal interference. The differential signaling lends itself for communicating data via an inexpensive medium, such as twisted wire pair or parallel PCB traces. The data transmission technique applies to various communication network topologies: point-to-point, daisy-chain, and point-to-multiple points. | 02-24-2011 |
20110085479 | ENCODING UPLINK ACKNOWLEDGMENTS TO DOWNLINK TRANSMISSIONS - A portable device, such as a mobile terminal or user equipment, for encoding uplink acknowledgments to downlink transmissions. The portable device includes a receiver configured to receive a plurality of data blocks, such that each of the data blocks include an associated cyclic redundancy check (CRC), and a processor configured to determine received status for each of the data blocks by checking the CRC of each of the data blocks. The portable device further includes a transmitter for transmitting a response sequence which indicates the received status of all of the data blocks. | 04-14-2011 |
20110096702 | METHOD FOR SENDING THE PHYSICAL BROADCAST CHANNEL IN A TIME DIVISION DUPLEX SYSTEM - A method for sending a physical broadcast channel in the TDD system is disclosed, which is: a signal of a physical broadcast channel is not sent in a pilot position, and the signal of the physical broadcast channel is sent on 4 OFDM symbols of the first subframe of one radio frame. Through the present invention, the extension requirement of the physical broadcast channel capacity in the TDD can be met, and the system complexity is reduced due to the normal cyclic prefix and extended prefix using the same sending method. | 04-28-2011 |
20110096703 | METHOD AND APPARATUS FOR FLEXIBLE SPECTRUM USAGE IN COMMUNICATIONS SYSTEMS - Methods and apparatuses are disclosed that provide flexible use of a shared radio resource. An apparatus determines from monitoring signal energy on a shared radio resource whether other transmitters are present. A predetermined set of time division duplex (TDD) signaling patterns are identified. A correlation is performed between signal energy received on the shared radio resource and the predetermined TDD signaling patterns. The apparatus may then determine a TDD signaling pattern that may reduce or avoid interference with any other transmitters using the shared resource. The shared radio resource may be, for example, a shared frequency spectrum. Efficient allocation of radio resources among apparatuses such as radio transceivers, without fixed time references or predetermined patterns, may be obtained. The radio transceivers may be base stations or mobile user equipment in a wireless communications system. The apparatus may be an integrated circuit, a portion thereof, or chipset. | 04-28-2011 |
20110141952 | METHOD AND APPARATUS FOR PROVIDING BUNDLED TRANSMISSIONS - An approach for providing bundled transmission is disclosed. A logic allocates a plurality of transmission time intervals (TTIs) of a time duplex division (TDD) transmission scheme as a bundle for supporting transmission of duplicate data over the TTIs. The bundle of TTIs is associated with a plurality of initial hybrid automatic repeat request (HARQ) processes. The logic also maintains one or more of the same initial HARQ processes as unbundled for a predetermined TDD configuration. | 06-16-2011 |
20110205942 | COMBINING CCE's FOR POWER BALANCING - A method of reordering and pairing the set of elements, such as Control Channel Elements (CCEs), coming out of an interleaver for a channel, such as the Physical Downlink Control Channel (PDCCH), in such a way that power balancing provides almost equal impact on all Orthogonal Frequency Division Multiplexing (OFDM) symbols reserved for the control channel, while also taking the suggestions for the power balancing into account is provided. Corresponding apparatuses and computer programs are also provided. | 08-25-2011 |
20110243042 | Cellular Communication System and Method for Broadcast Communication - A cellular communication system comprises a first communication network arranged to use a single cell identifier reuse pattern; a second communication network comprising a cluster of communication cells and arranged to use a common cell identifier reuse pattern for broadcast transmissions. The cellular communication system further comprises management logic ( | 10-06-2011 |
20110249600 | COMBINING TRANSMISSION WITH INCREMENTING FIELDS - Chase combining gains for receiving a scrambled broadcast channel can be achieved even when a portion of each received channel coded transmission contains a portion that varies. A set of possible difference values for this varying portion, such as for a system frame number, provides hypotheses, each having a corresponding probability. One or more of the hypotheses are selected by rank order for adjusting a corresponding received coded transmission so that two or more channel coded transmissions can be combined and blind decoded until one of the hypotheses are confirmed. | 10-13-2011 |
20120106409 | FULL-DUPLEX DIFFERENTIAL SERIAL LINK INTERFACE FOR DATA TRANSFERRING - A data transmission technique where high speed data is transmitted differentially in a forward channel by way of a serial link, and relatively low speed data is differentially modulated onto the forward channel signal for transmission in a reverse channel via the link. By utilizing differential modulation in both forward and reverse channels, the resulting signal has a common mode voltage that is substantially constant, resulting in low EM!. The spectral content of the signal associated with the high speed data may be substantially non-overlapping with the spectral content of the signal associated with the low speed data. This facilitates the recovery of the high speed data and low speed data with minimal interference. The differential signaling lends itself for communicating data via an inexpensive medium, such as twisted wire pair or parallel PCB traces. The data transmission technique applies to various communication network topologies: point-to-point, daisy-chain, and point-to-multiple points. | 05-03-2012 |
20120170493 | TIME DIVISION DUPLEX COMMUNICATION APPARATUS AND RECEPTION INTERFERENCE PREVENTING METHOD THEREOF - Provided is a time division duplex communication apparatus capable of distinguishing interruption by a received interference wave at a reception time, interruption occurring upon completion of measurement of received power, and interruption caused by power leaked into a receiving system during transmission time. The time division duplex communication apparatus includes a variable attenuator | 07-05-2012 |
20120188920 | DEVICES AND METHODS FOR ASYMMETRICAL MUL TICARRIER TRANSMISSION AND RECEPTION - Devices and methods are disclosed which supplement a duplex frequency by providing one or more simplex frequencies and distributing data among them. Variations of the disclosed system include a server in communication with a communications device using a duplex channel. The server includes a scheduler that determines when it is no longer optimal to use the single duplex channel, and distributes data among the duplex channel and one or more simplex channels. Before sending this data, the server sends a schedule to the communications device through the duplex channel, so the communications device knows which bits of data are coming through which channels and at which times. A descheduler within the communications device receives the schedule and alerts the communications device to start receiving data on other simplex channels. The descheduler then puts the bits of data in order as they stream in across the duplex and simplex channels. | 07-26-2012 |
20130058265 | Ethernet Physical Layer Device Using Time Division Duplex - An Ethernet physical layer device using time division duplex. A time division duplex frame can be defined with uplink and downlink transmission periods. These defined uplink and downlink transmission periods can be adjusted based on bandwidth and latency considerations on the network link. | 03-07-2013 |
20130089011 | COGNITIVE MOBILE TIME DIVISION DUPLEX AD-HOC NETWORK - A cognitive MANET system is disclosed that uses TDD (Time Division Duplexing) and TDMA MAC to maintain routes that allow delivery of adequate bandwidth for applications resulting in an efficient way of maintaining information on neighboring wireless terminals and access points by using a routing protocol that has a built in slot reservation algorithm. | 04-11-2013 |
20130170409 | APPARATUS AND METHOD FOR TRANSCEIVING A SIGNAL USING A PREDETERMINED FRAME STRUCTURE IN A WIRELESS COMMUNICATION SYSTEM - Disclosed are an apparatus and method for transceiving a signal using a frame structure appropriate for a high-speed moving body. The method for transceiving a signal using a predetermined frame structure according to the present invention comprises a step of transceiving a signal via a frame having the predetermined frame structure, wherein one frame is constituted by eight subframes, and said frame consists of a type-1 subframe consisting of six orthogonal frequency division multiple access (OFDMA) symbols and a type-2 subframe consisting of seven OFDMA symbols, and said frame has a cyclic prefix length which is either 0, 1/32 of the useful symbol length, 1/64 of the useful symbol length, or 1/128 of the useful symbol length. | 07-04-2013 |
20130194984 | METHOD AND APPARATUS FOR HANDLING FULL-DUPLEX INTERFERENCE - The present invention provides a method and an apparatus for handling full-duplex interference. One method includes: obtaining an interference degree that is caused when a site device performs full-duplex transmission with at least two UEs; and determining, according to the interference degree, a UE allowed to transmit uplink and downlink signals on the same time and frequency resource among the at least two UEs. In embodiments of the present invention, a UE allowed to transmit uplink and downlink signals on the same time and frequency resource may be classified according to an interference degree that is caused when a site device performs full-duplex transmission with at least two UEs, thereby preventing the interference problem in the scenario of point-to-multipoint full-duplex communication as much as possible. | 08-01-2013 |
20130272177 | Dynamic Frame Structure for Synchronous Time-Division Duplexing Digital Subscriber Lines - An access node for digital subscriber line (DSL) communication comprising a transceiver configured to couple to a subscriber line, and a control entity coupled to the transceiver, wherein the control entity is configured to receive a request to switch to a nominal asymmetry ratio between an upstream data rate and a downstream data rate after initialization of the subscriber line, determine a flexible time period value based on the nominal asymmetry ratio, wherein the flexible time period is used to define a time division duplexing (TDD) frame structure, and forward a message that comprises the flexible time period value to the transceiver, wherein the transceiver is configured to transmit an upstream transmission using the TDD frame structure over the subscriber line, and receive a downstream transmission using the TDD frame structure over the subscriber line. | 10-17-2013 |
20130336180 | CARRIER AGGREGATION APPARATUS FOR EFFICIENTLY UTILIZING FREQUENCY RESOURCE OF LICENSE BAND AND SHAREABLE BANDS, AND OPERATION METHOD THEREOF - An exemplary embodiment provides a carrier aggregation apparatus including: a level assignment manager configured to perform management by classifying a license band allocated to a cognitive radio cell into a primary radio resource (PRR) level, and by classifying a shareable band obtained through a cognitive radio database or spectrum sensing into an auxiliary radio resource (ARR) level; a determiner configured to determine a quality of service (QoS) level of a communication service provided to the cognitive radio cell; and a service provider configured to allocate a frequency resource of the PRR level when the QoS level requires a first communication service, and to allocate a frequency resource of the ARR level when the QoS level requires a second communication service lower than the first communication service. | 12-19-2013 |
20140003307 | TIME DOMAIN DUPLEX (TDD) SWITCHING SYSTEM | 01-02-2014 |
20140003308 | PHYSICAL-LAYER DEVICE CONFIGURABLE FOR TIME-DIVISION DUPLEXING AND FREQUENCY-DIVISION DUPLEXING | 01-02-2014 |
20140016525 | RADIO COMMUNICATION APPARATUS, RADIO COMMUNICATION METHOD, AND PROGRAM - There is provided a radio communication apparatus including a duplexer including a first terminal for inputting and outputting a signal in a first frequency band, a second terminal for inputting and outputting a signal in a second frequency band, and a third terminal connected to an antenna, a reception system circuit which processes a reception signal, a transmission system circuit which generates a transmission signal, and a switch which, in a first mode, connects one of the first terminal and the second terminal to the reception system circuit and connects the other one of the first terminal and the second terminal to the transmission system circuit and which, in a second mode, connects the one of the first terminal and the second terminal to the reception system circuit and the transmission system circuit alternately. | 01-16-2014 |
20140071864 | METHOD AND APPARATUS FOR TRANSMITTING ACK/NACK INFORMATION IN WIRELESS COMMUNICATION SYSTEM - A method and apparatus for transmitting ACK/NACK information in a wireless communication system are disclosed. In accordance with a method for transmitting ACK/NACK information, an ACK/NACK signal of downlink transmission in a downlink subframe set is transmitted in a single uplink subframe. In this case, if a first physical uplink control channel (PUCCH) format is established by a higher layer for a downlink receiver, and if one physical downlink shared channel (PDSCH) is transmitted in a downlink subframe set, the ACK/NACK information can be transmitted using a second PUCCH format on PUCCH resources established by a higher layer for the second PUCCH format. | 03-13-2014 |
20140112220 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING COMMON CHANNEL INFORMATION IN WIRELESS COMMUNICATION SYSTEM - Methods and apparatus are provided for transmission and reception of common channel information in a mobile communication system using multi-antenna-based beamforming. A number of beams to be used for transmission to a terminal is determined at a base station. The common channel information is generated corresponding to the number of beams. The common channel information is transmitted from the base station to the terminal through one of the beams. | 04-24-2014 |
20140119250 | MECHANISM TO FACILITATE TIMING RECOVERY IN TIME DIVISION DUPLEX SYSTEMS - In general, the present invention relates to systems and methods to facilitate timing recovery and loop timing operations in a TDD communication system with significantly varying intervals of inactivity between periods of transmission. According to certain aspects, to facilitate timing recovery, embodiments of the invention define a maximum period of inactivity for each mode of transmission and associated “timing keep alive” signals during and/or between transmissions to assist the timing recovery function in the receiver. In embodiments, the receiver selects the desired format of the “timing keep alive” signal. According to further aspects, the timing recovery mechanisms of the invention maintain power saving objectives of G.fast, where power dissipation varies near linearly with traffic demand. | 05-01-2014 |
20140185496 | LOW LATENCY ARQ/HARQ OPERATING IN CARRIER AGGREGATION FOR BACKHAUL LINK - Described embodiments reduce ARQ/HARQ latency using carrier aggregation and cross-carrier ARQ/HARQ signaling. In embodiments, a wireless backhaul transmission link uses multiple paired carriers with complementary TDD frame timing. In embodiments, backhaul traffic subframes are protected using FEC and/or CRC encoding and ACK/NACK information is generated based on decoding and computing the FEC and/or CRC information for the subframes. The ACK/NACK information may be transmitted on the paired carrier. In embodiments, cross-carrier ARQ/HARQ signaling may reduce ARQ/HARQ latency to less than two TDD subframes. | 07-03-2014 |
20140185497 | BACKHAUL TRAFFIC RELIABILITY IN UNLICENSED BANDS USING SPECTRUM SENSING AND CHANNEL RESERVATION - Backhaul traffic reliability is improved in unlicensed spectrum bands by using cross-protocol channel sensing and reservation. Physical carrier sensing may be employed to scan channel quality of a plurality of carriers of an unlicensed spectrum band and select a carrier for use in a wireless backhaul communications link between a first base station and a second base station based on the scanned channel quality. The described features may further include the first base station transmitting a self-addressed reservation frame on the selected first carrier prior to transmission of backhaul data from the first base station to the second base station over the first carrier. | 07-03-2014 |
20140241224 | UNIVERSAL REMOTE RADIO HEAD - A distributed base station radio system includes first channelized to broadband conversion unit that receives first downlink channelized data for first radio frequency band from first channelized radio frequency source; and first universal remote radio head communicatively coupled to first channelized to broadband conversion unit. First channelized to broadband conversion unit converts first downlink channelized data into a first downlink broadband signal. First channelized to broadband conversion unit communicates the first downlink broadband signal to first universal remote radio head. First universal remote radio head receives first downlink broadband signal. First universal remote radio head frequency converts the first downlink broadband signal into first downlink radio frequency signals in first radio frequency band. First universal remote radio head is further configured to transmit first downlink radio frequency signals in first radio frequency band to first subscriber unit. | 08-28-2014 |
20140269459 | USER EQUIPMENT WITH REDUCED POWER CONSUMPTION OPERATIONAL MODES - A user equipment (UE) power-cycles UE transmission modem components to reduce overall UE power consumption. For example, multiple HARQ ACK/NACK feedback bits are aggregated for a predetermined number of consecutive DL subframes, and then the feedback is transmitted in a single dedicated UL subframe so that a transmitter and power amplifier may be temporarily turned off (State 3) to reduce power consumption in the UE. | 09-18-2014 |
20140269460 | CHANNEL STATE INFORMATION FOR ADAPTIVELY CONFIGURED TDD COMMUNICATION SYSTEMS - Methods and apparatus of a base station or a User Equipment (UE) in communication with each other are provided. The UE is configured by the base station for operation with an adapted Time Division Duplex (TDD) UpLink-DownLink (UL-DL) configuration. A process enabling the base station to configure a UE with resources for obtaining channel and interference measurements in two sets of Transmission Time Intervals (TTIs) and a process for the UE to obtain a Channel State Information (CSI) from the channel and interference measurements in the two sets of TTIs are provided. | 09-18-2014 |
20140313951 | PHYSICAL-LAYER CONTROL CHANNEL STRUCTURE - A coax network unit (CNU) coupled to a coax line terminal (CLT) receives a plurality of orthogonal frequency-division multiplexing (OFDM) symbols from the CLT and identifies a start-of-frame delimiter on a physical-layer (PHY) control channel in the plurality of OFDM symbols. The PHY control channel includes a plurality of contiguous subcarriers. The CNU decodes one or more forward error correction (FEC) code words that follow the start-of-frame delimiter on the PHY control channel. The one or more FEC code words provide PHY control data that include information specifying a structure of a PHY frame that includes the plurality of OFDM symbols. | 10-23-2014 |
20140376426 | MACHINE TYPE COMMUNICATION AGGREGATOR APPARATUS AND METHOD - The present disclosure proposes introducing a multi-tier network topology where some of the MTC devices will play a second role as data aggregators, consolidating data from several other nearby devices and hence reducing the impact on the mobile network. Different radio access technologies (RATs), like WiFi or LTE, can be used to aggregate data. Also different Radio Access Networks (RANs) can be used to connect the MTC aggregators to the MTC Application Server. Four aspects of a machine-type-communication aggregator apparatus and method are disclosed: (1) The LTE Mobile Network is used as the backhaul and LTE is also used for aggregator RAT; (2) The LTE Mobile Network is used as the backhaul and WiFi is used for aggregator RAT; (3) Mobile Relay based aggregation; and (4) Multi-tier hierarchical aggregators. Limiting overhead impact on the LTE uplink is taught by the disclosure. | 12-25-2014 |
20150146590 | Ethernet Physical Layer Device Using Time Division Duplex - An Ethernet physical layer device using time division duplex. A time division duplex frame can be defined with uplink and downlink transmission periods. These defined uplink and downlink transmission periods can be adjusted based on bandwidth and latency considerations on the network link. | 05-28-2015 |
20150295539 | POWER AMPLIFIER CIRCUIT FOR COMMUNICATION SYSTEMS - A power amplifier includes an input for receiving an RF signal to be amplified; at least one power amplification circuit module in electrical connection with the input for amplifying the RF signal; at least one biasing circuit in electrical connection with the power amplification circuit for compensating the distortion of the RF signal so as to amplify the RF signal substantially linearly, and an output arranged to output the amplified RF signal. | 10-15-2015 |
20150304125 | PROGRESSIVE MODULATION FOR DOWNSTREAM ACCESS - A method, system and computer program for transmitting at least two payloads in a downstream traffic phase of a time-division duplex (TDD) cycle with a single preamble from a headend followed by concatenated payloads without intervening preambles, whereby the payloads are ranked by increasing modulation profiles. The preamble, and concatenated and ordered set of payloads are then transmitted to two or more predetermined customer premise equipments (CPEs). | 10-22-2015 |
20150305021 | METHOD AND APPARATUS FOR TRANSMITTING CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM - The present invention relates to a method for receiving a downlink control signal in a TDD-based wireless communication system, and to an apparatus therefor. The method comprises receiving a downlink signal via a downlink interval in a specific frame including the downlink interval, a guard interval and an uplink interval. A combination of the downlink interval, the guard interval and the uplink interval is given using configuration information on the specific subframe. When the configuration information is given such that the length of the downlink interval is larger than a specific value, detecting a first type of PDCCH is performed in the specific subframe. When the configuration information is given such that the length of the downlink interval is equal to or smaller than the specific value, detecting the first type of PDCCH is skipped in the specific subframe. | 10-22-2015 |
20150305025 | SYSTEM AND METHOD OF SIGNALLING FOR POINT-TO-MULTIPOINT (PtMP) TRANSMISSION IN FIXED WIRELESS BACKHAUL NETWORKS - Systems and methods are disclosed for signaling in a point-to-multi-point (PtMP) fixed wireless backhaul network, in which each Hub serves a plurality of Remote Backhaul Modules (RBM). A Hub serves one RBM in each subframe per carrier in TDMA fashion, comprising transmitting a 1 ms TDD frame comprising one DL subframe and one UL subframe and gaps necessary to switch the radio direction and accommodate round trip delay. DL and UL frames may be allocated to different RBMs, with a single RBM in each DL or UL subframe per carrier per antenna beam. Each Hub keeps an independent context for each of its served RBMs. A DL ranging frame carries general information. A UL ranging frame carries a ranging opportunity. RBMs not scheduled in the current timeslot continue to receive a PHY control channel from the serving Hub, and update their parameters or links for link adaptation. | 10-22-2015 |
20150319010 | IMPROVED AVIONIC ETHERNET NETWORK AND METHOD OF TRANSMITTING BLOCKS OF DATA IN THE NETWORK - An avionics switched full-duplex Ethernet communication Arinc 664p7 network ( | 11-05-2015 |
20150334704 | INTRA-CLUSTER COORDINATION FOR CELL CLUSTERING INTERFERENCE MITIGATION - Dynamic intra-cluster coordination for TDD UL-DL reconfiguration using distributed TDD UL-DL reconfiguration techniques and/or new physical layer signaling. Cell weighting techniques may be used so that distributed TDD UL-DL reconfiguration of the cell cluster can be weighted towards cells of the cluster with higher load. Cells within a cell cluster may independently determine their preferred TDD UL-DL reconfiguration and one or more cells of the cluster may be eligible cells for determining the TDD UL-DL reconfiguration for the cluster. Special subframes may be used for transmission of TDD UL-DL reconfiguration messages from the configuring cell and transmission of ACK messages from other cells of the cluster. The TDD UL-DL reconfiguration message may be an orthogonal sequence based on a signature determined by the cell ID of the configuring cell. | 11-19-2015 |
20150341145 | DATA PACKET FOR BIDIRECTIONAL TRANSMISSION OF DATA PACKETS DURING DATA TRANSMISSION BETWEEN A FIRST AND A SECOND COMMUNICATION APPLIANCE, AND METHOD FOR TRANSMITTING SUCH A DATA PACKET - A data packet for bidirectional transmission of data packets in the case of data transmission between a first and a second communication device and a method for transmitting such a data packet is provided. A data packet that is transmitted from a first to a second communication device to contain a piece of acknowledgement information for all data packets that have already been received from the first communication device previously during this data transmission. | 11-26-2015 |
20150365222 | Traffic Backfilling Via Network Coding In A Multi-Packet Reception Network - Network coding and multiple packet reception (MPR) are used together to improve message dissemination speed in a wireless network using half duplex communication. In at least one embodiment, MPR is used to initially distribute data packets from a number of source nodes in the network to the other nodes of the network. Network coding techniques may then be used to perform backfilling within the network to supply data packets to the source nodes that were originally missed due to the half duplex constraint. | 12-17-2015 |
20150372783 | METHODS AND APPARATUSES FOR EMPLOYING A SUB-BAND APPROACH TOWARDS DOUBLING TRANSMISSION BANDWIDTH FOR DMT SYSTEMS - According to certain aspects, the present invention provides techniques to address G.fast and/or digital subscriber line (DSL) transmission at frequencies below and above 106 MHz in support of aggregate service rates well above 1 Gbps on short loops based on combining two independent first generation G.fast transceivers, each operating up to 106 MHz, into a single transceiver, capable of operating up to 212 MHz and achieving service rates of up to 2 Gbps. In these and other embodiments, a sub-band approach is used in which a total bandwidth is divided into two or more sub-bands, with communications for one or both of the first generation G.fast transceivers using one or both of the sub-bands, respectively. | 12-24-2015 |
20150372846 | DUAL BAND ANALOG FRONT END FOR HIGH SPEED DATA TRANSMISSIONS IN DMT SYSTEMS - According to general aspects, embodiments of the invention provide an analog front end (AFE) capable of combining two independent 106 MHz G.fast baseband transmission channels into a single 212 MHz wide G.fast transmission channel. In these and other embodiments, an AFE according to the invention is also capable of interfacing to a single 212 MHz G.fast transmission channels as well as a single 106 MHz G.fast transmission channel. | 12-24-2015 |
20160014544 | MACHINE TYPE COMMUNICATION AGGREGATOR APPARATUS AND METHOD | 01-14-2016 |
20160014742 | RESOURCE INDEXING FOR ACKNOWLEDGEMENT SIGNALS IN RESPONSE TO RECEPTIONS OF MULTIPLE ASSIGNMENTS | 01-14-2016 |
20160014745 | RESOURCE INDEXING FOR ACKNOWLEDGEMENT SIGNALS IN RESPONSE TO RECEPTIONS OF MULTIPLE ASSIGNMENTS | 01-14-2016 |
20160014771 | METHOD FOR TRANSMITTING/RECEIVING SIGNAL AND DEVICE THEREFOR | 01-14-2016 |
20160036491 | METHOD AND APPARATUS FOR CROSSTALK MANAGEMENT AMONG DIFFERENT VECTORED GROUPS - The present invention relates generally to data communications, and more particularly to techniques based on the G.fast protocol for managing operation around potentially degrading un-cancellable crosstalk among separate vector groups implemented in a single G.fast based box located at a network distribution point, referred to as a Distribution Point Unit (DPU). In embodiments, techniques according to the invention configure transmission of signals from the different vector groups so as to avoid or prevent transmission of signals, either in the frequency domain or time domain or a combination of the two, from causing severe degradation in performance due to un-cancelled crosstalk among the separate groups. | 02-04-2016 |
20160043859 | DEVICES AND METHODS FOR ASYMMETRICAL MULTICARRIER TRANSMISSION AND RECEPTION - A duplex frequency is supplemented by providing simplex frequencies and distributing a data load among them. A server initially communicates with a communications device using a duplex channel. A scheduler of the server determines when it is no longer optimal to use the single duplex channel, and distributes data among the duplex channel and the simplex channels. Before sending this data through multiple channels, the server first sends a schedule to the communications device to inform which bits of data are coming through which channels at which times. The scheduler compiles this schedule and sends it to the communications device through the duplex channel. A descheduler within the communications device receives the schedule and alerts the communications device to start receiving data on other simplex channels. The descheduler then puts the bits of data in order as they stream in across the duplex and simplex channels. | 02-11-2016 |
20160049921 | CONFIGURABLE RF TRANSMIT/RECEIVE MULTIPLEXER - A configurable RF transmit/receive (TX/RX) multiplexer, which includes a group of RF TX bandpass filters, a group of RF TX switching elements, and a group of RF RX bandpass filters; is disclosed. Each of the group of RF RX bandpass filters is coupled to a first common connection node. Each of the group of RF TX switching elements is coupled between a corresponding one of the group of RF TX bandpass filters and the first common connection node, which is coupled to a first RF antenna. | 02-18-2016 |
20160056861 | COMMUNICATION TERMINAL AND COMMUNICATION SYSTEM - In a communication terminal, a power receiving circuit is connected to a transmission cable having two wires through junctions, and configured to receive electric power supplied from the transmission cable. A transmission circuit is connected between the junctions, and configured to transmit a current-mode signal on the transmission cable by short-circuiting therebetween. An intermediate circuit includes a series circuit of an inductor and a capacitor, and is connected in parallel with the transmission circuit between the junctions and also exists between the junctions and the power receiving circuit. The power receiving circuit is connected between both ends of the capacitor. | 02-25-2016 |
20160065353 | Phase Relationship Control for Control Channel of a Multimedia Communication Link - A multimedia system for data communications. A source device communicates over a full duplex control channel of a multimedia communication link using time domain multiplexed (TDM) frames having n time slots per frame. The source device allocates a first time slot position to a virtual channel for data transmission by the source device over the full duplex control channel. A sink device communicates over the full duplex control channel of the multimedia communication link. The sink device allocates a second time slot position to the virtual channel for data transmission by the sink device over the full duplex control channel. A timing of the second time slot position is offset from a timing of the first time slot position by substantially n/2 time slots. | 03-03-2016 |
20160088657 | Virtual Busy-Tone for Full-Duplex Wireless Networks - System and method embodiments are provided for a virtual busy-tone for full-duplex wireless networks. Embodiments provide a mechanism for efficiently eliminating the hidden node problem. In an embodiment, a method in a full-duplex enabled wireless network component for avoiding collisions includes receiving, at the network component, a data transmission from a first station; and transmitting a busy indicator from the network component, the busy indicator including a time duration determined in accordance with an expected time duration of the data transmission to instruct any non-transmitting station to not transmit data during the included time duration. | 03-24-2016 |
20160095002 | APPARATUS AND METHODS FOR RADIO FREQUENCY SIGNAL BOOSTERS FOR CELLULAR AND BROADCAST TELEVISION SIGNALS WITH WIFI SIGNALS TRANSMISSION FUNCTION - Provided herein are apparatus and methods for radio frequency signal boosters for cellular and broadcast television signals with Wi-Fi signals transmission function. Cell phone, Wi-Fi, and broadcast television signals are boosted and retransmitted over a shared antenna or over more than one antenna. In certain implementations, a multi-band signal booster is configured to provide signal path gain to at least three signal paths: a first signal path configured to receive a first time division duplexed Wi-Fi signal, a second signal path configured to receive a first frequency division duplexed mobile or cellular signal, and a second signal path configured to receive a broadcast television signal. | 03-31-2016 |
20160095152 | SIMULTANEOUS OPERATION OF MULTIPLE TIME DIVISION DUPLEX LINKS USING A SINGLE TRANSCEIVER - Apparatus and methods for performing simultaneous time division duplex (TDD) communications are disclosed. A wireless communication device can be configured to establish both a first TDD communication link and a second TDD communication link with a network, such as a telecommunication network. Thereafter, the wireless communication device can send TDD uplink data to the network via the first TDD communication link, and receive TDD downlink data from the network via the second TDD communication link, such that a portion of the TDD uplink data is sent to the network at the same time a portion of the TDD downlink data is received from the network. In this manner, the transmissions of TDD uplink data and the TDD downlink data can occur simultaneously, via multiple communication links. Further, the TDD downlink data can be received in multiple, coordinated data transmissions using Long Term Evolution (LTE) multiple-input and multiple-output (MIMO) antenna diversity. | 03-31-2016 |
20160119109 | METHOD FOR COMMUNICATING DATA, COMMUNICATION CONTROLLER AND CIRCUIT ARRANGEMENT - Method for communicating data between a first circuit and a second circuit, in particular a microcontroller unit and a mixed signal circuit of a motor vehicle control device, which is also distinguished by the fact that, during full duplex operation, data are serially transmitted between the first circuit and the second circuit and a transmitter of the data provides a clock signal, in particular for decoding data by a receiver. The invention also describes a communication controller and a circuit arrangement for carrying out the method. | 04-28-2016 |
20160127064 | Clock Data Recovery Method and Device for Branch Signal in SDH - Disclosed are a method and a device for recovering clock data of a tributary signal in SDH, wherein the method includes that: it is to extract valid data of the signal from a time slot of each tributary in a synchronous digital hierarchy SDH frame, and store into a storage space corresponding to a time slot of each tributary in a cache; it is to recover a clock signal and a readout signal for the time slot of each tributary by means of time division multiplexing; when the readout signal for the time slot of any tributary is valid, it is to read out contents of the data from the storage space corresponding to the time slot of the tributary in the cache, and latch into a latch corresponding to the time slot; the device includes: a data extracting module, a clock recovery circuit and a data recovery module. | 05-05-2016 |
20160127999 | Wireless communication method, apparatus, and system - Embodiments of the present invention provide a wireless communication method, an apparatus, and a system. The method includes: receiving, by UE in a fixed downlink subframe whose subframe number is i-K | 05-05-2016 |
20160182213 | TDD UPLINK/DOWNLINK RE-CONFIGURATION MECHANISM | 06-23-2016 |
20160191183 | METHOD OF FILTERING DIGITAL SIGNAL FOR MAINTAINING DATA TRANSMISSION RATE IN TDD OR TDMA SYSTEM AND COMMUNICATION SYSTEM ADOPTING THE SAME - Provided is a digital filter implementing a function by using circular convolution of a digital input signal and a unit pulse response of the digital filter in applying a filter to the digital signal. | 06-30-2016 |
20160191230 | Aligning the Upstream DMT Symbols of Multiple Lines in a TDD DSL System - Time-division duplex (TDD) transmission in a digital subscriber line (DSL) communication system including a group of DSL transceivers at a remote side (FTU-Rs) and a distribution point unit (DPU) by performing, with a second FTU-R among the group of FTU-Rs, an initial upstream symbol alignment for a first FTU-R, where a first gap time the first FTU-R needs to wait before transmitting first upstream symbols to a first DSL transceiver at an operator side (FTU-O) at the DPU in a TDD frame period is acquired to make the first upstream symbols align at the first FTU-O's interface, transmitting second upstream symbols to the first FTU-O to correct the first gap time after performing the initial upstream symbol alignment, receiving, from the first FTU-O, tuning offset information representing a correction for the first gap time, and tuning the first FTU-R's upstream symbols transmit time according to the tuning offset information received. | 06-30-2016 |
20160254875 | Synchronous Time-Division Duplexing Amplifier Architecture | 09-01-2016 |