Abstract: A method of assigning parameter values to transceivers in a wireless communication network. Each of the parameter values assigned determines at least in part how a plurality of subcarriers are organized into a plurality of sub-channels. In particular embodiments, the method assigns the parameter values to the transceivers based on correlations between the sub-channels determined by the parameter values, distances between the transceivers, and loads experienced by the transceivers. After the parameter values are assigned to the transceivers, each of the transceivers is configured to transmit on the sub-channels determined at least in part by the parameter value assigned to the transceiver.

Abstract: Methods and systems for performing hybrid automatic repeat request (ARQ) in conjunction with broadcast/multicast channels are presented. In particular, an access node may transmit a series of hybrid ARQ subpackets to one or more client nodes using a broadcast/multicast channel. Each of the subpackets may be derived from the same full packet. Upon receiving a subpacket, a client node may attempt to decode the full packet from the subpacket(s) derived from the full packet. If the client node fails to do so, the client node may transmit a negative acknowledgement to the access node. If the access node receives more than a threshold extent of negative acknowledgements, the access node may transmit a subsequent subpacket in the series on the broadcast/multicast channel.

Abstract: An apparatus and method of configuring a number of retransmissions for an automatic repeat request (ARQ) scheme (e.g., hybrid ARQ) includes configuring one or more first maximum retransmission numbers based on respective one or more first predetermined values and independent of a second maximum retransmission number. The first maximum retransmission numbers may indicate a maximum number of retransmissions related to respective service flows operational with the base station. The second maximum retransmission number may indicate a maximum number of retransmissions related to control messages transmitted in the wireless network, and may be configured based on a second predetermined value. The configuration of the first maximum retransmission numbers may include the maximum retransmissions numbers associated with a specific user in communication with the base station. Further, at least one of the first maximum retransmission numbers of a particular user may be reconfigured to a third predetermined value.

Abstract: Methods and systems for performing hybrid automatic repeat request (ARQ) in conjunction with broadcast/multicast channels are presented. In particular, an access node may transmit a series of hybrid ARQ subpackets to one or more client nodes using a broadcast/multicast channel. Each of the subpackets may be derived from the same full packet. Upon receiving a subpacket, a client node may attempt to decode the full packet from the subpacket(s) derived from the full packet. If the client node fails to do so, the client node may transmit a negative acknowledgement to the access node. If the access node receives more than a threshold extent of negative acknowledgements, the access node may transmit a subsequent subpacket in the series on the broadcast/multicast channel.

Abstract: Exemplary methods and systems may generally be implemented to allow a macro-network base station without access to a GPS reference signal to provide some or all of the functionality for which existing macro-network base stations typically rely on GPS. In a first aspect, an exemplary macro-network base station may determine its location using a location-determination technique that is based upon the angles of arrival of FM radio signals from nearby FM stations. In a second aspect, an exemplary macro-network base station may stabilize its local oscillator by phase-locking its local oscillator to an FM radio signal, and periodically adjusting its local oscillator to account for phase drift of the FM radio signal. And in a third aspect, an exemplary macro-network base station may synchronize its frame-start timing with a nearby base station using a frame-start timing signal that the base station has synchronized to frame transmissions from the nearby base station during a setup routine.

Abstract: Both a system and method are provided for dynamically balancing a maximum number of active remote device users that can be serviced between first and second base stations transmitting data frames in a radio communication system when the carriers of the first and second base stations operate at different radio frequency bandwidths X and Y respectively, and Y is substantially larger than X. The system includes a system control circuit that controls the number of subchannels in the uplink control channel region of the data frames transmitted by the first base station, and a traffic monitoring circuit that monitors both an uplink load and a number of active wireless device users within broadcast coverage of said first base station. The system control circuit dynamically increases the radio resources in the uplink control channel region of the frames transmitted by the first base station.

Abstract: A radio communication system has a primary communication pathway and a secondary communication pathway. When the primary communication pathway is implemented by a microwave radio link, it is susceptible to poor performance under adverse weather conditions. A system evaluates the available data bandwidth under adverse conditions and provides control instructions to a data switch to reduce the data flow to the primary communication pathway. In addition, the data switch may receive priority control data to prioritize data queues to the primary communication pathway and the secondary communication pathway in accordance with the received instructions.

Abstract: Systems and methods for supporting E911 for VoIP mobile communications are provided. A mobile station formats a call setup message by including particular information in a header portion of the call setup message that is used by the wireless network to select an appropriate PSAP and route the call to the appropriate PSAP.

Abstract: A method and mobile station provides seamless IP session continuity between different RAN's (Radio Active Networks) that utilize different wireless access technologies. The mobile station includes internal software such that (1) when the mobile station is in a non-WiFi network, it establishes a mobile Internet protocol (MIP) tunnel between a home agent (HA) and the mobile station via a foreign agent (FA) of the network by either proxy mobile internet protocol (PMIP) with care of address (CoA) or client mobile internet protocol (CMIP) with CoA, and (2) when the mobile station detects that it is in a WiFi network, it establishes a MIP tunnel between the HA and the mobile station by either client mobile Internet protocol (PMIP) with co-located care of address (CCoA), or Internet protocol security (IPSec).

Abstract: A method of operating a communication system comprises performing a plurality of ranging processes to establish a network connection over a wireless link. A time interval is established for a wireless device timer at the wireless device upon establishing the network connection and a time interval is established for an access node timer at the access node upon establishing the network connection. The method also comprises establishing a communication session over the wireless link and network connection. When a repeat request acknowledgement message is received during the communication session, the time interval for the wireless device timer and the time interval for the access node timer is restarted.

Abstract: A method of operating a communication system comprises establishing a wireless device release time interval for a wireless device release timer at an access node upon establishing an initial network connection between a wireless device and the access node. An initial synchronization process is performed between the wireless device and the access node. The method continues with the access node sending an unsolicited synchronization message to the wireless device and starting the wireless device release timer. A second synchronization process is performed and upon successful completion of the second synchronization process, a success status synchronization response message is sent by the access node to the wireless device. The access node receives a synchronization confirmation message from the wireless device that comprises an identifier corresponding to the identity of the wireless device and upon receiving the confirmation message, the access node cancels the wireless device release timer.

Abstract: A method of operating a communication system comprises sending a frame by an access node to a wireless device where the frame comprises a packet. A counter is initialized and a timer for each frame is initiated. The method continues with the access node determining if a response associated with the packet is received before the expiration of the timer. If the response is received prior to the expiration of the timer, the counter and the timer are reset. If a response is not received prior to the expiration of the timer, the counter is incremented. Upon the counter meeting a criteria of a certain quantity of lost packets, the access node performs a synchronization process.

Abstract: A method of assigning parameter values to transceivers in a wireless communication network. Each of the parameter values assigned determines at least in part how a plurality of subcarriers are organized into a plurality of sub-channels. In particular embodiments, the method assigns the parameter values to the transceivers based on correlations between the sub-channels determined by the parameter values, distances between the transceivers, and loads experienced by the transceivers. After the parameter values are assigned to the transceivers, each of the transceivers is configured to transmit on the sub-channels determined at least in part by the parameter value assigned to the transceiver.

Abstract: A system to control paging cycles in a wireless network assigns mobile stations to one of a plurality of paging groups based on the paging cycle requirements of the individual mobile stations. In addition, the mobile stations in a particular paging group are further subdivided into subgroups that may be substantially equal in size. At any particular paging cycle, only one subgroup of a particular paging group is included in the paging process thus reducing the overall number of mobile stations that need to be paged in any particular paging cycle.

Abstract: Disclosed herein are methods and systems that may help a WiMAX base station function without a GPS signal by providing a high-stability reference signal via a subcarrier of a broadcast signal, such as an FM radio signal. An exemplary broadcast station may therefore be configured to phase-lock a subcarrier signal to a GPS signal, and include this subcarrier in its broadcast signal, thereby providing the subcarrier signal for use by a base station as a high-stability reference signal for local-oscillator stabilization at the base station. The broadcast station may further modulate a timing signal onto the subcarrier signal. An exemplary base station may therefore receive the broadcast signal, decode the broadcast signal to acquire the subcarrier signal, and use the subcarrier signal to stabilize its local oscillator, rather than using a GPS signal.

Abstract: A method for identifying time of flight interference in a wireless communication network is provided. The method includes detecting interference during a first uplink sub-frame at an interference destination base station, and transmitting a time of flight interference source detection request to a gateway, where the time of flight interference source detection request comprises a time of flight interference period. The method also includes determining one or more base stations in the vicinity of the interference destination base station, where the one or more base stations in the vicinity of the interference destination base station operate at a same frequency as the interference destination base station.

Abstract: Systems and methods of controlling transmission of communications from a base station to a wireless communication station are provided. When the signal quality of communications between the base station and the wireless communication station are above a predetermined signal quality level, multiple antennas are employed for transmitting such communications. When the signal quality of transmissions by the base station to the wireless communication station are below a predetermined signal quality level, a single antenna is employed for transmitting such communications.

Abstract: A mobile communication device wirelessly transfers user communications to a first wireless base station. The mobile communication device determines a first metric based on a load indicator for the first base station. The mobile communication device identifies a second wireless base station and determines a second metric based on a load indicator for the second base station. If the second metric is superior to the first metric, the mobile communication device determines if the second base station has sufficient performance characteristics for communication with the device. If the performance is sufficient, the mobile communication device initiates a hand-off from the first base station to the second base station. The mobile communication device may use additional factors to determine the first and second metrics.

Abstract: Methods and systems for assigning time-division multiplexed (TDM) slots in a multi-channel TDM system are presented. Preferably, a radio access network (RAN) assigns forward link and reverse link transmissions between the RAN and one or more wireless communication devices (WCDs) to TDM slots on various wireless channels. When making these assignments, the RAN may take into account (i) the priority of data that the RAN queues for the WCDs, and (ii) the signal quality at which the WCDs can receive the various wireless channels.

Abstract: Before a WiMAX-equipped device is distributed to an end-user, the manufacturer or distributor of the WiMAX-equipped device will record in the device a set of data that describes characteristics (e.g., type, features, capabilities, and limitations) of the device. When the end-user powers on the device or otherwise brings the device within the coverage of a service provider's WiMAX base station, the device will then acquire radio connectivity, typically with the service provider authenticating the device's WiMAX chipset. Thereafter, the device will engage in a first-time activation/service-provisioning session with a system operated by the service provider, and during that session, the device will provide the system with its device-characteristics data and the service provider will use that device-characteristics data as a basis to customize provisioning of service for the device based on the device's features and capabilities.