Abstract: In a method of allocating wireless medium resources in a communication system, the communication system including a base station and a plurality of client stations sharing a channel bandwidth, a frequency sub-band of the channel bandwidth is selected for allocating wireless medium resources to a client station. Wireless medium resources are allocated at the base station to the client station. The base station is constrained to allocate wireless medium resources to the client station within the selected frequency sub-band. A subframe is generated for transmission to the client station. The subframe includes at least a data region that contains data for the client station. The data for the client station is confined to be within the selected frequency sub-band.

Abstract: A method includes receiving, at a communication terminal, signals from a group of cells that cooperate in a Coordinated Multipoint (CoMP) transmission scheme. Signaling that specifies a CoMP resource management (CRM) set is received at the communication terminal. The CRM set includes a subset of the cells in the group for which the communication terminal is to perform signal measurements. A size of the CRM set is restricted to a predefined maximum size. The signal measurements are performed at the communication terminal only on the signals received from one or more of the cells in the CRM set. The signal measurements performed on the one or more of the cells in the CRM set are reported from the communication terminal.

Abstract: A method includes performing a handover for a mobile device between first and second RAT networks. The first RAT network has a tracking area. The second RAT network has a routing area. Idle mode signaling reduction is activated in the mobile device including activating first and second timers respectively for the first and second RAT networks. In response to either one of the first and second timers expiring, a tracking or routing area update is sent to a first base station. The first base station is in the first RAT network or the second RAT network. The first timer is reset while the second timer maintains a set offset from the first timer. The tracking area update indicates that the mobile device has performed a handover to the first RAT network. The routing area update indicates that the mobile device has handed over to the second RAT network.

Abstract: Systems, methods, apparatus, and techniques are provided for transmitting information to user equipment (UE) in a communications network. Data is generated in (i) a first frequency range associated with a first set of carriers and (ii) a second frequency range associated with a second set of carriers, where the first frequency range specifies a first communications cell and the second frequency range specifies a second communications cell. The first cell is assigned as a primary cell to a first set of UEs in the communications network. Control data is transmitted to both the first set of UEs and a second set of UEs using at least a portion of the first set of carriers.

Abstract: A method, implemented by one or more processors, for scheduling traffic streams in a communication network includes determining, via a processor, a plurality of sets of one or more cell characteristics. Each set of cell characteristics in the plurality of sets of cell characteristics corresponds to a different cell in a plurality of cells. The method also includes determining, via a processor, a first set of one or more traffic characteristics corresponding to a first traffic stream, selecting, via a processor, a first cell from the plurality of cells based on (i) the plurality of sets of cell characteristics and (ii) the first set of traffic characteristics, and assigning, via a processor, the first traffic stream to the first cell for an entire duration of the first traffic stream.

Abstract: Systems, methods, and other embodiments associated with QoS-aware CQI are described. In one embodiment, an apparatus includes a channel quality indicator (CQI) determination logic configured to compute a quality of service (QoS) aware CQI as a function of a QoS associated with a wireless channel over which a first wireless communication apparatus and a second wireless communication apparatus communicate. The apparatus may also include a CQI report logic configured to report the QoS-aware CQI, in a CQI report message, to a wireless communication apparatus that requested the QoS-aware CQI in a CQI request message.

Abstract: Methods and apparatus are provided for directing a beam towards a receiving device in the presence of interference. A beam transmitted by a transmission source is received at a receiving device. The received beam is affected by an interference signal from an interfering source. The receiving device computes a covariance matrix that represents a channel estimate associated with the interfering source. The receiving device modifies a predetermined sounding signal based on the covariance matrix for transmission to the transmission source. The receiving device causes the transmission source to estimate an equivalent channel matrix based on the predetermined sounding signal and the modified predetermined sounding signal. The equivalent channel matrix represents the channel estimate associated with the interfering source and a channel estimate associated with the transmission source.

Abstract: In a method for utilizing beamforming in a wireless communication system, reference signals corresponding to a first communication channel from a first communication device to a second communication device are received, and an estimate of the first communication channel is generated using the received reference signals. One or more transmit beamforming vectors are calculated using the estimate of the first communication channel, and the one or more transmit beamforming vectors are utilized to transmit signals via a second communication channel from the second communication device to the first communication device while the first communication device assumes that the first second communication device is not utilizing beamforming.

Abstract: A plurality of diagonal matrices Ci is determined, where the plurality of diagonal matrices Ci is for modifying a plurality of transmit signals to be transmitted via a plurality of transmit antennas, each diagonal matrix Ci for modifying an i-th block of sub-carriers, adjacent in frequency, in the plurality of transmit signals. The plurality of diagonal matrices Ci is used to modify the plurality of transmit signals to implement transmit diversity.

Abstract: A mobile station (MS) includes an estimation module, a filter module, and a filter selection module. The estimation module receives an input signal having subcarriers and generates first channel estimates based on the input signal. The subcarriers are selectively used by a base station (BS) to transmit preamble sequences when communicating with the MS. The filter module includes first and second filters. One of the first and second filters selectively filters the first channel estimates and generates second channel estimates. The filter selection module selects the one of the first and second filters based on a number of the subcarriers used to transmit the preamble sequences.

Abstract: Apparatus having corresponding methods and computer-readable media comprise: a first transceiver comprising a controller configured to select one of a plurality of frequency regions, wherein bandwidths of the frequency regions are non-uniform, and wherein the first transceiver is configured to transceive, according to a first protocol, first wireless signals in the one of the plurality of frequency regions selected by the controller; an arbiter configured to select one or more frequency channels based on the one of the plurality of the frequency regions selected by the controller; and a second transceiver configured to transceive, according to a second protocol, second wireless signals only in the one or more frequency channels selected by the arbiter.

Abstract: Apparatus having corresponding methods and computer-readable media comprise: a first transceiver comprising a controller configured to select one of a plurality of frequency regions, and a transmitter configured to transmit, according to a first protocol, first wireless signals in the one of the plurality of the frequency regions selected by the controller, wherein each frequency region is characterized by a respective type of unwanted interference generated responsive to the transmitter transmitting the first wireless signals in the respective frequency region; an arbiter configured to select one or more frequency channels based on the one of the plurality of the frequency regions selected by the controller; and a second transceiver configured to transceive, according to a second protocol, second wireless signals only in the one or more frequency channels selected by the arbiter.

Abstract: Systems and methods are provided for computing a relative path delay between multiple transmitting source to select a source that is closest to a receiving device. Preamble sequences unique to each source are received by a receiving device. The receiving devices determines based on a channel estimation or differential algorithm which transmitting source is closer to the receiving device. The channel estimation algorithm computes the path delay based on a channel estimation correlation at different preamble sequence indices. The differential algorithm computes the path delay based on a correlation between the received and transmitted preamble sequences at different preamble sequence indices. The receiving device selects the closer of the multiple sources to be the source from which to extract data.

Abstract: A method of adaptively selecting a modulation and coding scheme (MCS) of a communication link includes obtaining a first parameter corresponding to a Quality of Service (QoS) requirement of the communication link, obtaining a second parameter indicative of a physical condition of the communication link, selecting an MCS based on at least the first parameter and the second parameter.

Abstract: Communication between a base station and remote stations is partitioned into frames, each including subframes having a number of slots that are allocated based on data rates for each remote station. For communication in a half-duplex mode, multiple subframes are used, each separated by a frame partition, such that a first user group of remote stations can receive down-link data in a first subframe while another user group of remote stations can transmit up-link data during that same subframe. For the next subframe, the converse happens. Slot allocation is achieved in such a half-duplex system based on weighted down-link and up-link data rates and without first or simultaneously determining user group allocation or frame partition, which are instead determined in response to the determined slot allocations for each remote station, e.g., using a linear programming technique.

Abstract: In a method of synchronizing time domain multiplexing interference mitigation schemes of at least a first, second, and third wireless communication link within a first, second, and third network, respectively, a first set of parameters defining a first set of time intervals is determined. The first set of time intervals is utilized to schedule transmissions of the first wireless communication link to reduce interference with transmissions of the second wireless communication link. A second set of parameters defining a second set of time intervals is determined. The second set of time intervals is utilized to schedule transmissions of the first wireless communication link to reduce interference with transmissions of the third wireless communication link. The second set of parameters is determined based at least in part on at least one of the first set of parameters.

Abstract: A plurality of phases are determined. The plurality of phases are to be applied to a plurality of transmit signals to be transmitted via a plurality of transmit antennas. Each transmit signal comprises a plurality of sub-carriers. Each phase of the plurality of phases is to be applied to a corresponding block of sub carriers in the plurality of transmit signals, and each block of sub-carriers comprises a plurality of sub-carriers that are adjacent in frequency. The plurality of phases are applied to the plurality of transmit signals to implement transmit diversity. Each phase is applied to the corresponding block of sub carriers in the plurality of transmit signals.

Abstract: Communication between a base station and remote stations is partitioned into frames, each including a first frequency reuse zone having a number of slots. Slots are allocated by assigning a first data rate to each remote station for communication using the first frequency reuse zone. Each remote station is assigned a respective slot allocation comprising a first number of slots of the first frequency reuse zone and has a weighted data rate dependent on the first data rate and the respective slot allocation. The slot allocations are determined so as to maximize the minimum of the weighted data rates of the remote stations. Slots may be allocated using a data rate assigner to assign a first data rate to each remote station for communication using slots of the first frequency reuse zone, and using a slot allocation provider to provide a respective slot allocation for each remote station.

Abstract: A method for determining a phase of each of a plurality of transmitting antennas in a multiple input and multiple output (MIMO) communication system includes: calculating, for first and second ones of the plurality of transmitting antennas, a value based on first and second groups of channel gains, the first group including channel gains between the first transmitting antenna and each of a plurality of receiving antennas, the second group including channel gains between the second transmitting antenna and each of the plurality of receiving antennas; and determining the phase of each of the plurality of transmitting antennas based on at least the value.

Abstract: Autocorrelation algorithms are employed in systems and methods to detect preamble symbols for frame synchronization in WiMAX (Worldwide Interoperability for Microwave Access) or OFDMA (Orthogonal Frequency Division Multiple Access) systems. An ML (“Maximum Likelihood”) estimator estimates segment index and frame timing information for an ideal signal scenario. When using the ML estimator, a received time domain signal is sampled. Groups of samples are formed, and the group is further divided into a plurality of portions. Then, an autocorrelation between time domain samples of each portion results in a maximum value which indicates the start of a preamble of the time domain signal. Frame synchronization can then be performed. In other transmission scenarios, the algorithm is modified to use modified estimators of the preamble symbol location. When using the modified estimators, less than all of the portions of samples are compared to one another to find a maximum value.