Abstract: The disclosure includes a system and method for implementing full-duplex wireless communications between communication devices. The system includes a processor and a memory storing instructions that, when executed, cause the system to: create, at a first communication device, first data to transmit to a second communication device; switch a half-duplex operation mode of the first communication device to a full-duplex operation mode to activate the full-duplex operation mode of the first communication device; transmit a first portion of the first data from the first communication device to the second communication device using a wireless channel; and transmit, in the full-duplex operation mode of the first communication device, a remaining portion of the first data to the second communication device while simultaneously receiving second data from the second communication device using the wireless channel.

Abstract: Embodiments of techniques and systems for extended discontinuous reception (DRX) are described herein. In some embodiments, a user equipment (UE) configured for extended DRX may include receiver circuitry and paging circuitry. The receiver circuitry may be configured to receive a system frame number from an eNB and receive extension data from the eNB. The paging circuitry may be configured to determine an augmented system frame number based on the system frame number and the extension data, determine a paging frame number based on the extension data, and monitor for paging occasions when the augmented system frame number is equal to the paging frame number. Other embodiments may be described and/or claimed.

Abstract: In the field of communication technologies, a method and an apparatus for acquiring a Precoding Matrix Indicator (PMI) and a Precoding Matrix (PM) are provided. The method includes: acquiring a reference PMI and a differential PMI according to a first non-differential codebook and a first diagonal differential codebook, where codewords included in the first diagonal differential codebook form a diagonal matrix. The apparatus includes a PMI acquiring module. Acquiring a reference PMI and a differential PMI according to a non-differential codebook and a diagonal differential codebook can reduce the feedback overhead or improve the feedback precision; and the fact that a codeword included in the diagonal differential codebook is a diagonal matrix can maintain amplitude characteristics (for example, a constant modulus characteristic, and a finite character set constraint characteristic) of elements of the non-differential codebook or facilitate power distribution among antennas.

Abstract: The method of controlling a wireless communication apparatus includes receiving data from a transmitter; transmitting information about transmission of the data to a plurality of receivers; transmitting the data to the plurality of receivers; receiving a response signal about error in receiving the data, from at least one of the plurality of receivers; and retransmitting the data to the plurality of the receivers.

Abstract: A method and apparatus are described including scanning a channel, generating a report for the scanned channel, transmitting the channel report to an associated access point and receiving a channel assignment responsive to said channel report. Also described are a method and apparatus including scanning a channel, generating a first channel report, receiving a second channel report from an associated client, transmitting the first channel report and the second channel report to a server, receiving a channel assignment message from the server responsive to the first and second channel reports and transmitting the channel assignment message to the associated client. Further described are a method and apparatus including receiving a channel report from an associated access point, building an interference graph responsive to the channel report, determining channel assignments based on the interference graph and transmitting a channel assignment message to the associated access point.

Abstract: A method implemented in a user equipment (UE) used in an orthogonal frequency division multiple access (OFDMA) wireless communications system supporting coordinated multi-point (CoMP) joint transmission (JT) is disclosed. The method includes measuring reference signal received power (RSRP), transmitting, to a network, first feedback on the RSRP, receiving, from the network, a CoMP measurement set, conducting pre-scheduling CoMP UE fallback according to the CoMP measurement set, computing channel quality and direction information according to a UE category, and transmitting, to the network, second feedback on the channel quality and direction information. Other methods, apparatuses, and systems also are disclosed.

Abstract: A radio communication system provided with a communication device and a radio communication network system is characterized by comprising a transmission delay estimate information transmitting means for transmitting transmission delay estimate information to the radio communication network system when the transmission condition of the transmission delay estimate information is met.

Abstract: Provided is a radio base station including a terminal detection unit that detects an uplink signal of a first terminal serviced by another base station, a storage unit that stores an allocation priority of a radio resource for a predetermined period, and a resource allocation unit that allocates a radio resource to a second terminal serviced by the radio base station, using the allocation priority of the radio resource stored in the storage unit. When the terminal detection unit detects the uplink signal of the first terminal, the resource allocation unit preferentially allocates a radio resource of an uplink of a high allocation priority to the second terminal while lowering an allocation priority of a radio resource estimated to be used next for the uplink by the first terminal.

Abstract: A circuit processes requests to access an antenna, the requests from a plurality of wireless communication protocols components including (i) a first wireless communication protocol component and (ii) a second wireless communication protocol component. The circuit causes a switch to provide the second wireless communication component with access to the antenna while the circuit is in a power saving mode of operation, and, upon the circuit exiting the power saving mode of operation, determines whether the second wireless communication component is utilizing the antenna. The circuit, upon the circuit exiting the power saving mode of operation, applies a first set of arbitration rules when it is determined that the second wireless communication component is utilizing the antenna, and, upon the circuit exiting the power saving mode of operation, applies a second set of arbitration rules when it is determined that the second wireless communication component is not utilizing the antenna.

Abstract: In certain embodiments, a cellular wireless communications network has clusters, each cluster having a plurality of cells and a cluster-level controller that dynamically divides the cluster into non-interfering sub-clusters for each resource allocation unit (e.g., physical resource block). Each sub-cluster has one or more cells that transmit to a single user in the cluster for the resource allocation unit, and at least one sub-cluster has at least two cells that transmit to a single user for the resource allocation unit using a distributed diversity mode of communication in which the at least two cells transmit the same data to the single user. The controller divides the cluster into sub-clusters based on determinations of whether users in the cluster are susceptible to interference from non-serving cells in the cluster. By assigning potentially interfering, non-serving cells to the sub-cluster for a user, those non-serving cells are eliminated as sources of interference.

Abstract: A communication device is configured to encode information bits using one or more forward error correction (FEC) codes and/or error correction codes (ECCs) to generate different codewords (e.g., codeword groups having different lengths, based on different code rates, etc.). The device generates a combined codeword using different sized codewords (e.g., long, medium, and short) by filling fills long codewords completely if possible, then filling medium codewords completely if possible with the remaining message bits (if any), and filling short codewords completely if possible plus another additional short codeword with the remaining message bits (if any). If the total number of short (or medium and short) codeword parity bits is greater than or equal to the number of medium (or long) codeword parity bits, then the device increments the number of medium (or long) codewords by one and setting the number of short (or medium and short) codewords to zero.

Abstract: Mechanisms for enabling distributed access control are disclosed. At least one communication channel is selected for wireless communication by a device by a selection procedure where interference impact of at least one communication channel on at least one interfered node is determined, an overall interference effect is formed, and a set of feasible communication channels is selected based on comparison of the overall interference effect to communication channel capacity. At least one communication channel can be selected from the selected set of feasible communication channels based on transmission collision information, a ratio of capacity of interfered transmissions and capacity of interference-free transmissions, usage history of the feasible communication channels, and fairness of communication channel selection. Information can be communicated to at least one device from a plurality of access nodes.

Abstract: It is disclosed a method comprising accommodating, in frequency domain, a first bandwidth of a first carrier signal with respect to a second bandwidth of a second carrier signal such that the first bandwidth adjoins to or overlaps the second bandwidth, the first bandwidth being greater than the second bandwidth.

Abstract: The teachings herein provide a number of advantages, including but not limited to improving soft-cell operation in service scenarios involving legacy devices that do not directly support carrier aggregation—i.e., devices that can transmit or receive in only one frequency band at a time. By imposing a Time Division Duplex (TDD) arrangement across two carriers operating in different frequency bands, scheduled transmissions involving the legacy device are mutually exclusive as between the two carriers. Advantageously, the TDD arrangement is imposed across first and second carriers used in the macro- and low-power layers of a soft-cell, thus imposing TDD-based coordination of scheduled transmissions between those carriers irrespective of whether the individual carriers are configured as Frequency Division Duplex (FDD) or TDD carriers, or a mix thereof.

Abstract: The present invention provides a base station whereby efficient resource allocation for data signals is realized. In a base station (100) where a downlink control signal directed to a relay station is mapped onto an allocation area (R-PDCCH allocation area candidate) comprising M (where M is a natural number of 2 or greater) resource blocks, an allocation area candidate determination section (101) distributes the M resource blocks among N (where N is a natural number less than M) allocation area groups, and determines N resource block groups for the placement of the allocation area groups; and a control signal allocation section (102) maps the downlink control signal directed to the relay station onto the M resource blocks that are specified on the basis of the determined N resource block groups and the number of resource blocks constituting each of the allocation area groups.

Abstract: Systems, methods, and other embodiments associated with reducing interference for a multi-radio communication device are described. According to one embodiment, an apparatus includes a first radio transceiver configured to communicate wirelessly in accordance with a first wireless communication standard, and a second radio transceiver configured to communicate wirelessly in accordance with a second wireless communication standard. A network interface configured to establish a first communication link with a first station and establish a second communication link with a second station. An interference controller is configured to restrict the first station from communicating in accordance with the first wireless communication standard over the first communication link during a time that the network interface is communicating with the second station over the second communication link.

Abstract: A method, an apparatus, and a computer program product are provided for receiving unicast and multicast-broadcast single frequency network (MBSFN) signals from an eNB in a subframe. The apparatus receives at least one transmission in the subframe, the subframe divided into six partitions and for receiving at least one unicast symbol and a plurality of multicast-broadcast single frequency network (MBSFN) symbols, each of the at least one unicast symbol and the plurality of MBSFN symbols having an associated cyclic prefix (CP). The apparatus further receives at least one unicast signal including the at least one unicast symbol at a first partition of the subframe, and receives at least one MBSFN signal including the plurality of MBSFN symbols respectively at a second partition through sixth partition of the subframe, each MBSFN symbol having the associated CP with a length of at least 33.33 ?s.

Abstract: A system and method for managing power in a subnet having a hub in communication with one or more nodes is disclosed. The hub and nodes communicate using one or more non-contention access methods, such as scheduled, polled or posted access. The node may enter a sleep or hibernation state while no scheduled, polled or posted allocation interval is pending. The hibernation state allows the node to hibernate through one or more entire beacon periods. In the sleep state, the node may be asleep between any scheduled, polled and posted allocation intervals for the node or during another node's scheduled allocation interval in a current beacon period. By selecting which access scheme is in use, the node and hub can increase the node's chances to be in hibernation or sleep state and minimize power consumption.

Abstract: In a method of operating a communication network (20) a time division duplex (TDD) frame (F) of information is communicated over a radio interface (32) between a wireless terminal (30) and a base station node (28). The method comprises the wireless terminal (30) receiving plural downlink (DL) subframes of the frame and, in response thereto, configuring a Physical Uplink Control Channel (PUCCH) channel to comprise up to four acknowledgements by using only two PUCCH channel resources and using PUCCH format 1a or PUCCH format 1b. In an example embodiment a PUCCH channel resource is specified by a sequence utilized for transmission of at least part of the PUCCH channel and a cyclical shift applied to the sequence. The two sequences of the respective two PUCCH resources are orthogonal, and the cyclical shift of the two PUCCH resources can be in a frequency domain, a time domain, or both the frequency domain and the time domain.

Abstract: A pre-distortion circuit for a power amplifier may include: (a) a digital interface for receiving a complex-value digital baseband signal; (b) a mixed-signal pre-distortion circuit adaptively controlled by a set of parameter values, receiving the complex-value digital baseband signal to provide a pre-distorted signal for input to the power amplifier, the mixed-signal pre-distortion circuit may include: (i) digital pre-distortion circuit that transforms the complex-value digital baseband signal to a pre-distorted complex-value digital baseband signal by applying to the complex-value digital baseband signal a memory-less non-linear gain and a polynomial function based on the complex-value digital baseband signal one or more delayed copies of the complex-value digital baseband signal; and (ii) up-converter that converts the pre-distorted complex-value digital baseband signal to the pre-distorted signal; and (c) a signal analyzer receiving an output signal from the power amplifier to provide the parameter values

Abstract: Techniques for supporting data transmission via a relay station are described. In an aspect, data transmission may be supported using ACK-and-suspend. A transmitter station sends a first transmission of a packet to a receiver station. The transmitter station receives no ACK information for the first transmission of the packet and suspends transmission of the packet. The transmitter station thereafter receives an indication to resume transmission of the packet and, in response, sends a second transmission of the packet. In another aspect, different ACK timeline may be used when applicable. The receiver station may send ACK information in a designated subframe if available for use or in a different subframe. In yet another aspect, ACK repetition may be used. The receiver may send ACK information in multiple subframes to facilitate reception of the ACK information when the transmitter station is unable to receive one or more of the multiple subframes.

Abstract: Methods and apparatus are disclosed for a generalized outer loop link adaptation procedure. A normal outer-loop control procedure corrects an estimated SINR, which may be inaccurate if the estimate SINR is mapped from a channel quality estimate that does not reflect the true radio link condition. A normal outer control procedure functions properly only when a normal Modulation and Coding Scheme (MCS) is selected. A normal MCS is the highest Modulation and Coding Scheme (MCS) with which the target Block Error Rate (BLER) can be achieved given a certain number of HARQ (Hybrid Automatic Repeat Request) transmissions. The present application discloses a generalized outer loop link adaptation procedure that functions properly whether the selected MCS is normal, aggressive, or conservative.

Abstract: The present invention relates to a method for communicating in a network comprising at least one primary station communicating with at least one secondary station, comprising (a) the secondary station sending to the primary station a buffer status report representative of the amount of data in a buffer of the secondary station, (b) in absence of acknowledgement from the primary station, the secondary station retransmitting the buffer status report and, (c) if a maximum number of retransmissions has been reached, the secondary station sending a further buffer status report to the primary station.

Abstract: The present invention relates to a method for operating a power save mode in a wireless LAN system. The method involves transmitting a power save multi-poll (PSMP) frame containing a power save mode (PSM) of a non-access point (AP) station (STA) to a first station and to a second station which are paired with an AP on the basis of multiple input multiple output (MIMO) technology. Information on the PSM contains downlink transmission start offset which indicates the point in time of starting a downlink transmission period, a downlink transmission duration which indicates the duration of the downlink transmission period, and transmission object station identification information. The method further involves transmitting a data frame to the first station and to the second station on the basis of the MIMO technology during the downlink transmission period.

Abstract: A system for determining a bearing or location of a radio frequency identification (RFID) tag using a handheld RFID reader is described. In one embodiment, the reader is equipped with an accelerometer. A user moves the reader while the reader receives the tag's signal and determines the tag signal's phase at multiple locations. The locations of the reader antenna can be reconstructed using the accelerometer data. By using the phase determined at multiple locations in conjunction with the location of the reader antenna, the reader can determine the bearing of the tag. For an RFID reader not equipped with an accelerometer, the sign and ratio of the rate of change in the phase of a tag's signal to the distance traveled by the reader antenna can be used to determine the location of the tag relative to the reader.

Abstract: High-quality content reproduction is to be realized. A transmission clock is supplied from a sink (repeater) device to a source device via a clock signal line. The source device sends content data to the sink (repeater) device via a predetermined number of differential signal lines in synchronization with the transmission clock supplied from the sink (repeater) device. High-quality content reproduction can be performed in the sink (repeater) device, without the use of any additional lines other than the differential signal lines and the clock signal line. For example, upon receipt of a transmission clock supply request from the source device, the sink (repeater) device supplies the transmission clock to the source device.

Abstract: A method and apparatus for performing Joint Randomness Not Shared by Others (JRNSO) is disclosed. In one embodiment, JRNSO is determined in Frequency Division Duplex (FDD) using a baseband signal loop back and private pilots. In another embodiment, JRNSO is determined in Time Division Duplex (TDD) using a baseband signal loop back and combinations of private pilots, private gain functions and Kalman filtering directional processing. In one example, the FDD and TDD JRSNO embodiments are performed in Single-Input-Single-Output (SISO) and Single-Input-Multiple-Output (SIMO) communications. In other examples, the FDD and TDD embodiments are performed in Multiple-Input-Multiple-Output (MIMO) and Multiple-Input-Single-Output (MISO) communications. JRNSO is determined by reducing MIMO and MISO communications to SISO or SIMO communications. JRNSO is also determined using determinants of MIMO channel products. Channel restrictions are removed by exploiting symmetric properties of matrix products.

Abstract: Methods and systems for allowing a contents list of a video camera recorder to be smoothly displayed on a television receiver and improve the performance of a selecting operation on video content by a user. A video camera recorder (source device) 10A and a television receiver (sink device) 30A are connected through an HDMI cable 1. The video camera recorder 10A is provided with an HDMI transmission unit (HDMI TX) 28 and a high-speed data line I/F 28A. The television receiver 30A is provided with an HDMI reception unit (HDMI RX) 32 and a high-speed data line I/F 32A. In response to a transmission request from the television receiver 30A side, the video camera recorder 10A transmits, at high speed, additional information (contents list and thumbnail data) to the television receiver 30A by using a high-speed data line constituted by specific lines of the HDMI cable 1.

Abstract: A level shift circuit includes a first pair of transistors of the first conductive type (M1, M4) with sources coupled to a pair of input nodes (in, inB) and gates coupled to the first power supply (GND) in common; a second pair of transistors of the second conductive type (M2, M5) with drains coupled to the drains of the first pair of the transistors and the gates coupled to the first power supply in common; a third pair of transistors of the second conductive type (M3, M6) with cross-coupled gates and drains coupled to the sources of the second pair of transistors and the sources coupled to the second power supply (V2) in common; and a pair of capacitative elements (C1, C2) with one ends coupled to the pair of input nodes and the other ends coupled to the drains of the third pair of transistors.

Abstract: Disclosed herein are an analog compensation circuit and a method for tuning an analog compensator in full-duplex transmission systems. An embodiment analog compensation circuit includes a secondary receiver configured to receive and convert a sampled self-interference signal to a baseband self-interference signal. A tuner is coupled to the secondary receiver and configured to receive a baseband transmit signal and the baseband self-interference signal, and to compute complex gains according to the baseband transmit signal and the baseband self-interference signal. An analog compensator is coupled to the tuner and has multiple branches. The analog compensator is configured to receive the complex gains and use them to adjust respective attenuators and phase shifters of the branches. The analog compensator is further configured to process a sample of a transmit signal using the branches, the transmit signal being up-converted from a new baseband transmit signal.

Abstract: When using a multi-receiver aggregation protocol in a wireless communications network, a sub-header may be used to identify groups of data units that share common parameters, such as destination addresses, acknowledgement modes, modulation/coding rates, lengths, etc. The layout of this sub-header may permit each receiving device to identify the portion of the aggregated payload that is addressed to that receiving device, where that portion is located, how long that portion is, and how to demodulate it. In addition, by controlling the selection and timing of various acknowledgement modes used by the mobile stations, a base station may improve overall network efficiency and throughput.

Abstract: A method and apparatus for enhancing data retransmission to improve call performance are described. At least one protocol data unit (PDU) may be transmitted from a transmitting entity to a receiving entity. The at least one PDU may be part of a service data unit (SDU). It may be determined to perform a communication re-establishment. As such, the SDU may be retransmitted, beginning with a first PDU transmitted as part of the SDU. In an aspect, the transmitting entity may be a radio link control (RLC) transmitting device and the receiving entity may be an RLC receiving device in communication with one another across a network. In another aspect, the transmitting entity may be a radio link control (RLC) transmitting protocol layer and the receiving entity may be a radio link control (RLC) receiving protocol layer both within a protocol stack of a device.

Abstract: This invention relates to signalling of control information related to retransmissions in a wireless communication network. According to one aspect of the invention, a method for controlling transmission over a wireless communication link is provided. The method comprises the step of indicating on a transmission resource control channel whether a HARQ retransmission process in a mobile station should be activated or deactivated.

Abstract: Methods and systems for allowing a contents list of a video camera recorder to be smoothly displayed on a television receiver and improve the performance of a selecting operation on video content by a user. A video camera recorder (source device) 10A and a television receiver (sink device) 30A are connected through an HDMI cable 1. The video camera recorder 10A is provided with an HDMI transmission unit (HDMI TX) 28 and a high-speed data line I/F 28A. The television receiver 30A is provided with an HDMI reception unit (HDMI RX) 32 and a high-speed data line I/F 32A. In response to a transmission request from the television receiver 30A side, the video camera recorder 10A transmits, at high speed, additional information (contents list and thumbnail data) to the television receiver 30A by using a high-speed data line constituted by specific lines of the HDMI cable 1.

Abstract: The present invention relates to a method for efficient transmission of a request frame such as an RTS/CTS frame and a response frame in response to the request frame in a multi-user based wireless communication system. The method of the present invention comprises: a process where wireless terminals transmit a response frame at their own response frame transmission time through a request frame that contains information about a plurality of wireless terminals and information about the response frame transmission time of the respective wireless terminals; a process where the respective wireless terminals transmit a response frame according to a token scheme such that the response frame is transmitted to a final access point; and a process where only a representative wireless terminal selected depending on a given wireless environment receives the response frame.

Abstract: Certain aspects and aspects of the present invention are directed to a distributed antenna system having a downlink communication path, an uplink communication path, and a non-duplexer isolator sub-system. The downlink communication path can communicatively couple a transmit antenna to a base station. The uplink communication path can communicatively couple a receive antenna to the base station. In one aspect, the non-duplexer isolator sub-system can be electronically configured for isolating uplink signals traversing the uplink communication path from downlink signals. In another aspect, a non-duplexer isolator sub-system can be configurable in one or more mechanical steps selecting a frequency response. In another aspect, a non-duplexer isolator sub-system can include an active mitigation sub-system.

Abstract: In an exemplary embodiment, a phased array antenna comprises a bidirectional antenna polarizer and is configured for bidirectional operation. The bidirectional antenna polarizer may combine active implementations of power splitters, power combiners, and phase shifters. Furthermore, in another exemplary embodiment a bidirectional antenna polarizer has extensive system flexibility and field reconfigurability. In yet another exemplary embodiment, the bidirectional phased array antenna operates in “radar-like” applications where the transmit and receive functions operate in half-duplex fashion. Furthermore, in exemplary embodiments, the phased array antenna is configured to operate over multiple frequency bands and/or multiple polarizations.

Abstract: A method in a communication network includes receiving a data unit that includes a request to transmit an aggregate data unit to a communication device, and, in response to receiving the data unit, generating an aggregate data unit for transmission to the communication device, where the aggregate data unit includes a plurality of component data units, each having a respective media access channel (MAC) header, and a duration of the aggregate data unit is determined using a parameter negotiated with the communication device.

Abstract: A system for hybrid self-interference cancellation includes a transmit coupler that samples an RF transmit signal, a RF self-interference canceller that transforms the sampled RF transmit signal to an RF self-interference cancellation signal, an IF self-interference canceller that transforms a downconverted version of the RF transmit signal to an ISRF self-interference cancellation signal, and a receive coupler that combines the RF and ISRF self-interference cancellation signals with an RF receive signal.

Abstract: A method and apparatus for dynamically controlling quality of service (QoS) is provided herein. During operation, a QoS manager will determine if a device is currently being used by an individual. The QoS of the device will then be tailored based on whether or not the device is currently being used by the individual. Devices that may be running applications, yet unused by anyone may have their QoS reduced. This will allow the QoS to be increased for devices that are currently being used.

Abstract: In the field of communication technologies, a method and an apparatus for acquiring a Precoding Matrix Indicator (PMI) and a Precoding Matrix (PM) are provided. The method includes: acquiring a reference PMI and a differential PMI according to a first non-differential codebook and a first diagonal differential codebook, where codewords included in the first diagonal differential codebook form a diagonal matrix. The apparatus includes a PMI acquiring module. Acquiring a reference PMI and a differential PMI according to a non-differential codebook and a diagonal differential codebook can reduce the feedback overhead or improve the feedback precision; and the fact that codewords included in the diagonal differential codebook form a diagonal matrix can maintain amplitude characteristics (for example, a constant modulus characteristic, and a finite character set constraint characteristic) of elements of the non-differential codebook or facilitate power distribution among antennas.

Abstract: Certain aspects of the present disclosure may help reduce power consumption by allowing a UE to remain in a low power state by not attempting to decode ACK/NACK transmissions after receiving a positive acknowledgement (ACK).

Abstract: A method and system for calibrating transmit and receive antenna patterns for time division duplex (TDD) is described. A station in a communications network comprises at least two antennas configured to operate together for both transmitting and receiving modes. A phase setting difference between the transmit and receive antenna patterns may be determined and used to determine a relative amplitude setting for the transmit antenna pattern and/or a relative amplitude setting for the receive antenna pattern.

Abstract: Apparatuses and methods for carrier aggregation are generally described herein. An evolved NodeB (eNB) may transmit downlink control information (DCI) on a control channel portion for a primary cell (PCell) downlink (DL) subframe. The DCI can include an offset field indicating an offset, relative to a first secondary cell (SCell) subframe, to identify a second SCell subframe for which the DCI is providing control information. Other apparatuses and methods are also described.

Abstract: A wireless transceiver includes a transmit path configured to generate a radio frequency (RF) transmit signal for transmission via an antenna, the transmit path generating a feedforward signal having at least one adjustable phase. A receive path is configured to receive an RF receive signal via the antenna. A circulator-based duplexer includes a circulator configured to couple the transmit signal from the transmit path to the antenna and to couple the receive signal from the antenna to the receive path. A controller is configured to process feedback from the receive path and to control the at least one adjustable phase to cancel portions of the transmit signal on the receive path.

Abstract: A portable radio communication system for enabling duplex communication on portable radios is provided. The portable radio communication system comprises a host radio having a host radio antenna and an accessory having an accessory antenna. The host radio antenna is operated to receive signals simultaneously on at least two channels during a dual watch mode of operation or receive signals on a single channel during a single watch mode of operation. The portable radio communication system further comprises at least one switch coupled to the host radio antenna and the accessory antenna. The switch enables duplex communication during the dual watch mode of operation or single watch mode of operation by routing transmit signals from the host radio to the accessory antenna for transmission while the host radio antenna receives signals during the dual watch mode of operation or single watch mode of operation.

Abstract: Systems and method are for managing packet data protocol (PDP) contexts in a wireless data communications network. A plurality of real-time applications are prioritized within a single, shared PDP context or allocated a second PDP context based upon priority levels logically assigned to the plurality of applications such that high priority applications are delivered before lower priority applications. Lower priority applications are suspended and interrupted by higher priority applications and are set to resume after the higher priority applications are completed. Priority levels are established by a priority management engine (PME) that may reside in one or more network elements, such as a General Packet Radio Service (GPRS) Support Node or a network probe system. The priority management engine establishes the priority levels based upon one or more factors including, for example, PDP utilization characteristics at a given time and/or given network location, and/or user preferences.

Abstract: A wireless communication system may include a plurality of N co-located Wi-Fi access points, each configured to communicate with at least one user equipment. The system may further include a beamformer coupled to each of the access points and coupled to at least one antenna array. The antenna array may include a plurality of antenna elements and may be configured to provide a plurality of M spatially uncorrelated beams for a coverage area of each of the N access points.

Abstract: An entire radio transceiver can be easily integrated into one IC chip. In order to integrate the IF filters on the chip, a heterodyne architecture with a low IF is used. A single, directly modulated VCO is used for both up-conversion during transmission, and down-conversion during reception. Bond-wires are used as resonators in the oscillator tank for the VCO. A TDD scheme is used in the air interface to eliminate cross-talk or leakage. A Gaussian-shaped binary FSK modulation scheme is used to provide a number of other implementation advantages.

Abstract: A method in a network node for assisting a first user equipment in interference mitigation. The network node is comprised in a cellular communications network. The cellular communications network further comprises the first user equipment and a second user equipment. The second user equipment causes interference to the first user equipment when at least one of the first user equipment and second user equipment communicate by using Device-to-Device communication. The network node obtains information about the receiver of the first user equipment. The network node then determines one or more parameters required by the first user equipment for mitigating the interference. The parameters relate to the obtained information and to the interfering second user equipment. The network node then sends the one or more parameters to the first user equipment thereby assisting the first user equipment to mitigate interference caused by the second user equipment.