Abstract: Methods and apparatus for a next-in-line protecting device to periodically broadcasting its existence in a communication system. A next-in-line protecting device periodically transmits the next-in-line codeword to inform a primary protecting device and a plurality of secondary devices that the next-in-line device still exists in a communication system. The NPD transmits the NPD codeword intelligently in order to reduce the probability of collision with the RTS codewords transmitted by the other SPDs.

Abstract: A method for providing a dual-channel beacon signal to protect a low-power device in a wireless network is provided. The method includes generating a beacon message in a first logical channel and generating a detection signal in a second logical channel. The first logical channel and the second logical channel are mapped into a first physical channel and a second physical channel. The second physical channel is orthogonal to the first physical channel. The dual-channel beacon signal is transmitted by simultaneously transmitting the beacon message and the detection signal in the first physical channel and the second physical channel.

Abstract: Methods for maintaining continuing existence of a next-in-line protecting device in a beacon network including a primary protecting device (PPD), the next-in-line protecting device (NPD) and a plurality of secondary protecting devices (SPDs). In one method, a subset of the plurality of secondary protecting devices periodically transmit beacon messages to the primary protecting device. When the next-in-line protecting device disappears, the primary protecting device selects a secondary protecting device from among the secondary protecting devices that have transmitted the beacon messages within a certain period to be a new next-in-line protecting device. In another method, the plurality of secondary protecting devices continuously monitor an existence of the next-in-line protecting device. When the next-in-line protecting device disappears for a certain period of time, a subset of the plurality of secondary protecting devices may contend to be a new next-in-line protecting device.

Abstract: An apparatus and method for an improved sleep mode in a mobile terminal are provided. The apparatus includes a transceiver for communicating with a base station, a modem for modulating and demodulating signals for transmission via the transceiver or received via the transceiver, and a controller for controlling a sleep cycle of the mobile terminal, the sleep cycle including a listening window and a sleep window. The controller controls the sleep cycle based on an Advanced Mobile Station (AMS) timer, a Hybrid Repeat Request (HARQ) Downlink (DL) Retransmission timer, a HARQ DL Gap timer, and a HARQ Uplink (UL) Gap timer.

Abstract: A subscriber station can efficiently determine an accessible base station by scanning a subset of base stations based on an optimized list received from a serving base station. The subscriber station includes a white list that contains information regarding a number of closed subscriber group (CSG) base stations to which the subscriber station is subscribed. The subscriber station can transmit a request message that includes one or more of: indication of whether the detected identifier of the femto base station is in the whitelist or not; and its location information. In response, the base station can send a message that includes the nearby femtocells and whether the femtocell is accessible or inaccessible to the subscriber station. The femto base station can be designed to be in transmission off mode when none of its subscribers is in its coverage.

Abstract: Prior to a change in a configuration, such as a change to the carrier frequency, bandwidth, base station type, and so forth of the base station, the base station can inform a subscriber station to prepare for the reconfiguration by sending a message to the subscriber station. The message informs the subscriber station regarding the change in configuration and a timing regarding the change. The base station can command the subscriber station to handover to the serving base station with the new configuration or the subscriber station can choose to handover to the serving base station with the new configuration. The subscriber station can perform network reentry to the serving base station with the new configuration at the time of or after the new configuration is effective. A communication context between the stations can be maintained and the network reentry can be optimized by omitting one or more operation procedures.

Abstract: A method and apparatus for channel sensing in a wireless communication device is provided. A self-signal intentionally transmitted to a first wireless device by another wireless communication device is detected in a signal received by the first wireless device. An original self-signal transmitted by the second wireless device is reconstructed from the detected self-signal. The reconstructed self-signal is then suppressed in the received signal and channel sensing is performed on the remaining signal. If the self-signal cannot be detected and verified in the received signal, the second wireless device may be requested to retransmit a modified self-signal and a predetermined number of attempts made to detect and verify the self-signal. Results of channel estimation performed on the received signal may be used in reconstructing the original self-signal. The channel estimation may include information from a plurality of frames in the received signal.

Abstract: A method and system for contention resolution in a communications network are disclosed. As one example, a method for contention resolution in a communications network is disclosed. The method includes the steps of transmitting a first contention message during a first time interval, determining if a second contention message has been received during the first time interval, if the second contention message has been received during the first time interval, deferring a use of a network resource in the communications network, and if the second contention message has not been received during the first time interval, using the network resource during a second time interval.

Abstract: A method for data transmission, contemplates calculating a cell-load ratio by: r cl , n = ( 1 - ? ) · r cl , n - 1 + d n S n , where rcl,n-1 is a cell-load ratio calculated in a previous stage, rcl,n is an instant cell-load ratio, ? is a forgetting factor, dn is an instantaneous cell load, and Sn is a frame capacity; and broadcasting the calculated cell-load ratio by carrying the cell-load ratio in a designated message. Methods of a cell selection and a handover for a subscriber which are initiated by a subscriber are in dependence upon both of the cell-load ratio and the signal strength provided by the base stations.

Abstract: A method and a Mobile Station (MS), for use in a wireless communication network comprising a plurality of Base Stations (BSs) capable of communicating with a plurality of MSs, wherein at least some of the BSs are Femtocell BSs (FBSs) and at least some of the BSs are Macrocell BSs (MBSs), for mitigating interference are provided. The method includes detecting, by an MS, an interfering Closed Subscriber Group (CSG) FBS that the MS is not authorized to access, and transmitting, by the MS, a request for mitigation of interference.

Abstract: A wireless communication network capable of providing Enhanced Multi-Broadcast Service (EMBS) to a plurality of subscriber stations. At least one base station in the network transmits a downlink frame to the plurality of subscriber stations. The downlink frame includes an EMBS MAP configured to identify locations of EMBS data bursts. The downlink frame also includes a security and data multiplexing burst and EMBS data burst. A number of the subscriber stations are configured to decode the EMBS MAP to determine the locations of a number of EMBS data burst in a number of subsequent downlink frames.

Abstract: A method and apparatus for generating a bar code and for using a bar code to assist with positioning are provided. The method for generating a bar code to assist with positioning includes obtaining Global Positioning System (GPS) assistance data, generating a bar code with the GPS assistance data encoded therein, and displaying the bar code. The method for using a bar code to assist with positioning includes scanning a bar code, obtaining GPS assistance data from the scanned bar code, receiving and locking onto one or more GPS signals by using the GPS assistance data, and determining a position using the received one or more GPS signals.

Abstract: For use in a wireless network, a femtocell base station in communication with at least one first mobile station is provided. The femtocell base station is configured adjust a resource of the femtocell base station to mitigate interference at a second mobile station. In certain embodiments, the femtocell base station is configured to coordinate a handover of the at least one first mobile station from the femtocell base station to a neighboring base station. In certain embodiments, the femtocell base station is configured to transmit a message regarding the resource adjustment to the at least one first mobile station.

Abstract: An apparatus and method for configuring Enhanced Multicast and Broadcast Service (E-MBS) Scheduling Intervals (MSIs) in a communication system are provided. The method includes selecting a number N of MSIs, and selecting a periodicity of each of the N MSIs. By selecting a number N of MSIs and a periodicity of each of the N MSIs, a communication system is able to more efficiently decode E-MBS data.

Abstract: The present disclosure relates generally to a system and method for asynchronous busy-tone multiple access with acknowledgement for ad hoc wireless networks. In one example, a method for use in an ad hoc network using a tone emitted by a receiving node includes receiving a first portion of a packet from a sending node, where the first portion of the packet contains a destination address of the packet. A tone is emitted by the receiving node if the receiving node determines that the received destination address matches an address of the receiving node. The receiving node receives a second portion of the packet containing a request for transmitting data from the sending node to the receiving node, and the tone is emitted for at least a predefined period of time after receiving the request.

Abstract: A method for routing data in a network is disclosed. As an example, a method for routing data in a wireless mesh network is disclosed. The method determines what type of data is to be routed, associates the type of data with one or more routing link performance parameters such as, for example, link latency and link capacity, selects a plurality of nodes based on the one or more routing link performance parameters, determines what node of the plurality of nodes provides an optimal level of performance associated with the one or more routing link performance parameters, and selects that node as a recipient node for the data to be routed.

Abstract: An Automatic Repeat reQuest (ARQ) transmitter for use in a wireless communication system and method for its operation are provided. The method includes determining unutilized capacity of an ARQ receiver buffer in an ARQ receiver, determining if the ARQ receiver buffer can support an ARQ block to be transmitted based on the determined unutilized capacity of the ARQ receiver buffer, and if it is determined that the ARQ receiver buffer can support the ARQ block to be transmitted, transmitting the ARQ block to the ARQ receiver.

Abstract: A first base station and mobile station are capable of mitigating interference resulting from communications from a second base station. The base station can determine if at least a portion of a paging slot overlaps with an available interval (AI) of the second base station in which the second base station transmits. The first base station adjusts an occurrence of the paging slot such that the paging slot overlaps and/or occurs within an unavailable interval (UAI) of the second base station wherein the base station does not transmit or transmits with limited resources. The mobile station also can determine if at least a portion of a listening slot overlaps with the AI and, using the same procedure that the first base station uses to recalculate the paging slot, recalculates the listening slot such that the listening slot overlaps and/or occurs within the UAI of the LDC mode.

Abstract: A channel quality information (CQI) polling controller for use in a wireless communication network is capable of causing a base station to poll a mobile station within its coverage area for CQI at an initial predetermined rate. The controller is also capable of recognizing a CQI variation pattern of the mobile station based upon its responses to a plurality of the CQI polls. The controller is further capable of selecting a CQI polling rate based upon the recognized CQI variation pattern. The controller is also capable of causing the base station to poll the mobile station for CQI at the selected CQI polling rate.

Abstract: A wireless network includes a serving base station and a plurality of non-serving base stations which are capable of performing a coordinated multipoint communication with at least one subscriber station. A non-serving base station includes at least one antenna configured to overhear a data burst from the subscriber station to a serving base station. The non-serving base station can decode the data burst locally. If the data burst is successfully decoded, the controller forwards the decoded data burst to the serving base station. The serving base station can decode the data burst locally or jointly decode the data burst from the non-serving base station.