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: Apparatus having corresponding methods and computer-readable media comprise: a Mobile Wireless Standards (MWS) transceiver configured to transceive MWS signals in accordance with a schedule, wherein the schedule is based on link status reports transmitted by the MWS transceiver as part of the MWS signals; one or more Industrial, Scientific and Medical (ISM) band transceivers, wherein each ISM band transceiver is configured to transceive ISM band signals; and an arbiter configured to modify the link status reports, prior to transmission of the link status reports, based on at least one of i) an expected transmission of the ISM band signals by one of the ISM band transceivers, and ii) an expected reception of the ISM band signals by one of the ISM band transceivers.

Abstract: A method includes receiving in a mobile communication terminal signals from a group of cells that cooperate in a Coordinated Multipoint (CoMP) transmission scheme. Signaling information is received from a first cell in the group. The signaling information is indicative of a first pattern of time-frequency Resource Elements (REs) used by the first cell for transmitting reference signals, and is further indicative of a second pattern of the REs used by a second cell in the group for transmitting the reference signals. A third pattern of the REs, which are available for receiving data from the cells, is derived in the terminal from the signaling information that is indicative of the first and second patterns. The data from the cells is received in the terminal in one or more of the REs in the third pattern.

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: 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: Apparatus having corresponding methods and computer-readable media comprise: a paging module configured to provide paging parameters for a mobile station, wherein the paging parameters include i) a paging listening interval length Lp for each paging listening interval, ii) a paging cycle period Pp, and iii) a paging cycle offset Qp; and a sleep module configured to determine sleep parameters for the mobile station based on the paging parameters, wherein the sleep parameters include i) a wakeup interval length Ls for each wakeup interval, ii) a sleep cycle period Ps, and iii) a sleep cycle offset Qs; and wherein the sleep module is further configured to determine the sleep parameters such that each paging listening interval overlaps one of the wakeup intervals.

Abstract: In a wireless communication system including a plurality of client stations including at least one client station that is not configured to utilize carrier aggregation, different coverage areas correspond to different frequency bands being utilized. Wireless medium resources are allocated and frequency band(s) are assigned, jointly, to the client stations based on one or more coverage areas corresponding to one or more frequency bands in which each client station is located, whether client stations are configured to utilize carrier aggregation, demand factors, and indications of channel quality.

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 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 base station is configured to assign, to each remote station, a down-link data rate and an up-link data rate for communication between that remote station and the base station, provide, for each remote station, a down-link slot allocation for communication between that remote station and the base station, and provide, for each remote station, an up-link slot allocation for communication between that remote station and the at least one base station. A minimum down-link data rate varies with the down-link slot allocation for each remote station, and a minimum up-link data rate varies with the respective up-link slot allocation for each remote station. The down-link slot allocations and the up-link slot allocations are determined so as to maximize the minimum of the down-link data rates and the up-link data rates.

Abstract: Systems and techniques relating to wireless communications are described. A described technique includes generating a paging message for a wireless communication device, the paging message can include a positioning request; transmitting the paging message to the wireless communication device; and receiving, during a connection establishment process, a connection message from the wireless communication device. The connection message can include a positioning response that is responsive to the positioning request.

Abstract: Communication circuitry that employs persistent scheduling conventionally uses one initiation command to establish the modulation and coding scheme (“MCS”) that will be used for transmission of subsequent payload bursts, at least until it is time to send another initiation command. Inefficiency can result if transmission channel conditions change between initiation commands. To avoid such inefficiency, the disclosed circuitry maintains a count of unsuccessful transmission attempts. When the count deviates from a predetermined reference standard, the circuitry automatically and autonomously makes an appropriate change in the MCS selection without waiting for the next initiation command. Both transmitter and receiver circuits independently operate in the same way at the same time so that both ends of a communication link remain coordinated with one another.

Abstract: A system including a first receiver module and a first interference canceller module. The first receiver module is configured to receive a first signal including a first set of codewords and to generate a first set of decoded codewords by decoding at least one of the first set of codewords. The first interference canceller module is configured to measure first reliability metrics of codewords corresponding to the first set of decoded codewords; based on the first reliability metrics, select a second set of decoded codewords from the first set; generate a second signal based on the second set of decoded codewords; and subtract at least a portion of the second signal from the first signal to cancel interference of codewords corresponding to the second set of decoded codewords on the second set of codewords in the first signal.

Abstract: A method includes determining one or more metrics indicative of at least one of (i) interference on a communication link, (ii) noise on the communication link, and (iii) performance of a receiver receiving packets via the communication link, selecting a modulation and coding scheme as a function of (i) the determined one or more metrics, and (ii) one or more Quality of Service requirements for the communication link, and correcting the selected modulation and coding scheme using a current value of a correction factor. The corrected modulation and coding scheme is to be used to generate one or more packets. The method also includes determining an error rate corresponding to packets previously transmitted over the communication link, and adjusting the correction factor based on the determined error rate. Adjusting the correction factor includes incrementing or decrementing the correction factor.

Abstract: A received signal includes a plurality of user signals, the plurality of user signals including at least a first user signal and a second user signal. The first user signal corresponds to first user data that has been modulated independently of second user data corresponding to the second user signal. At least one of the first user signal or the second user signal is encoded with a finite state machine encoder independently of the other of the first user signal and the second user signal. The received signal is demodulated, wherein demodulating the received signal includes calculating distances between (i) each transmit symbol in the received signal and (ii) expected symbol values, wherein each expected symbol value corresponds to user data for multiple users including the first user and the second user. User data in the received signal including the first user data and the second user data is decoded based on the calculated distances.

Abstract: The present disclosure describes systems and techniques relating to wireless communications. According to an aspect of the described systems and techniques, an apparatus includes circuitry configured to receive a signal representing a wireless communication transmission; and circuitry configured to process the signal to (i) decode a control portion of the wireless communication transmission, (ii) determine from the decoded control portion that a data portion of the wireless communication transmission was successfully decoded previously and acknowledged, and so the wireless communication transmission is an unnecessary retransmission, and (iii) trigger acknowledgement of the wireless communication transmission being successfully decoded, without completing a decode of the data portion of the wireless communication transmission, when the unnecessary retransmission is detected.

Abstract: In a wireless network including a first cell and a second cell, it is determined whether a measure of mobility of a user device meets a mobility criterion, and it is determined whether a size of the second cell meets a cell size criterion. When it is determined that (i) the measure of mobility of the user device meets the mobility criterion and (ii) the size of the second cell meets the cell size criterion, the user device is prevented from being switched from the first cell to the second cell, or at least one of (i) a handover parameter or (ii) a cell reselection parameter is adjusted in order to change a probability that the user device will switch from the first cell to the second cell.

Abstract: A method is implemented in a communication device operating in a carrier aggregation mode utilizing a plurality of component carriers, where the plurality of component carriers includes at least (i) a primary component carrier associated with a primary cell and a primary cell broadcast message channel, and (ii) a secondary component carrier associated with a secondary cell and a secondary cell broadcast message channel. The method includes receiving, at the communication device, a broadcast message associated with the primary cell via (i) the primary cell broadcast message channel or (ii) the secondary cell broadcast message channel, decoding, at the communication device, the received broadcast message associated with the primary cell, receiving, at the communication device, a broadcast message associated with the secondary cell via the secondary cell broadcast message channel, and decoding, at the communication device, the received broadcast message associated with the secondary cell.

Abstract: Systems and techniques relating to wireless communications are described. A described technique includes receiving a signal that represents concurrent wireless data communications, where the signal is based on superimposed signals modulated using different respective constellations; detecting a first signal from the received signal over a first combined constellation, the combined constellation being based on the respective constellations; modifying the received signal based on the first detected signal to remove a signal contribution associated with the first detected signal; and detecting a second signal from the modified received signal over a second constellation. The second constellation can be based on the respective constellations absent a constellation of the respective constellations that is associated with the first detected signal.

Abstract: Methods for a wireless transceiver, the methods having corresponding apparatus and computer programs, comprise: transmitting a ranging sequence modulated according to a first modulation mode at a power level selected according to a normalized carrier-to-noise value associated with the first modulation mode as set forth in a table associating normalized carrier-to-noise values with modulation modes; transmitting a first ranging request message according to a second modulation mode at a power level selected according to a normalized carrier-to-noise value associated with the second modulation mode, the first ranging request message being transmitted after having received a ranging response message for the ranging sequence; and increasing each normalized carrier-to-noise value in the table, except the normalized carrier-to-noise value associated with the first modulation mode, by a predetermined amount in response to the transceiver not receiving a response to the first ranging request message within a predeterm