Patent application number | Description | Published |
20080214199 | Dynamic frequency selection based on spectrum etiquette - The present disclosure relates generally to systems and methods for dynamic frequency selection based on spectrum etiquette. In one example, the method includes identifying multiple frequencies usable by a central subdivision in a wireless communication system that are not in use by neighboring subdivisions. The method may determine whether the frequencies include a frequency that cannot be used by the neighboring subdivisions and, if the frequency exists, may select the frequency for use by the central subdivision. If such a frequency does not exist, the method may identify a frequency that can be used by fewer of the neighboring subdivisions than other frequencies and select the identified frequency for use by the central subdivision. The frequency selection can be performed periodically, or can be triggered by a certain predefined events. | 09-04-2008 |
20080219286 | METHOD AND SYSTEM FOR CONTENTION RESOLUTION IN TELECOMMUNICATION NETWORKS - 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. | 09-11-2008 |
20090011756 | Method for maintaining the continuing existence of NPD in IEEE 802.22.1 operation - 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. In still another method, the primary protecting device transmits a beacon message to the plurality of secondary protecting devices to indicate whether a next-in-line protecting device is required. When a next-in-line protecting device is required, a subset of the secondary protecting devices contend to be a new next-in-line protecting device. | 01-08-2009 |
20090097460 | Method for contention-free NPD periodic updating - 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. | 04-16-2009 |
20090137251 | Calculation and broadcast of cell-load ratio and intelligent cell selection for IEEE802.16M - A method for data transmission, contemplates calculating a cell-load ratio by: | 05-28-2009 |
20090143089 | Apparatus and method for performing an expedited handover using a dedicated ranging channel in a wireless network - A wireless network comprising a plurality of base stations capable of communicating with a plurality of mobile stations, wherein a serving base station is operable to serve a mobile station and a target base station is operable to transmit to the mobile station a message identifying a ranging slot dedicated to the mobile station. The target base station receives a ranging code from the mobile base station before the target base station receives a ranging request message from the mobile station. In an embodiment, the ranging slot may be an exclusive ranging slot dedicated to two or more mobile stations. | 06-04-2009 |
20090279466 | Flexible sleep mode for advanced wireless systems - A base station capable of wireless communication with a plurality of subscriber stations within a coverage area of a network, where the base station is capable of transmitting, to a subscriber station, a traffic indication message with an indicator value, wherein the indicator value is used by both the base station and the subscriber station to dynamically adjust the length of the next discontinuous reception (DRX) cycle in an absence of an explicit signaling message from the base station. | 11-12-2009 |
20090279467 | Adaptive and effective power saving design - A wireless communication network comprising a plurality of base stations capable of wireless communication with a plurality of mobile stations within a coverage area of the network, wherein at least one of the plurality of base stations is capable of setting a first counter and a second counter to an initial value; if the base station has downlink data ready to be transmitted to a mobile station, determining if a frequency-time grid (FTG) for the downlink data is less than or equal to a threshold; and if the base station does not have downlink data ready to be transmitted to the mobile station, increasing the first counter by one. | 11-12-2009 |
20100002720 | Effective idle mode for advanced wireless system - A wireless communication network comprising a plurality of paging controllers capable of communication with a plurality of base stations within a coverage area of the network, wherein at least one of the plurality of paging controllers is capable of, if a mobile station within a paging area requests to enter idle mode, assigning a temporary paging identification to the mobile station, and transmitting the temporary paging identification to a base station in communication with the mobile station, wherein the temporary paging identification is used by the base station to determine an index of a paging opportunity or frame in a paging cycle to transmit a paging message for the mobile station. | 01-07-2010 |
20100061286 | Method for EMBS-unicast interactivity and EMBS paging - A method of paging a mobile station is provided. The method includes requesting to receive a page that announces when a program is to be broadcast. The method also includes sending the page to the mobile station before the program is to be broadcast. The method further includes receiving the page at the mobile station. A method for providing interactive feedback in a wireless communication network is also provided. The method includes broadcasting a program from a server to a mobile station. The method also includes receiving at least part of the program at the mobile station. The method further includes providing feedback about the program from the mobile station. | 03-11-2010 |
20100061338 | System and method for performing a handover in an enhanced multicast broadcast system (E-MBS) - A wireless communication network comprising a plurality of base stations capable of wireless communication with a plurality of subscriber stations within a coverage area of the network, wherein at least one of the plurality of base stations is capable of transmitting an edge-zone indicator which indicates the proximity of the at least one base station to an edge of an enhanced multicast broadcast system (E-MBS) zone. | 03-11-2010 |
20100085867 | System and method for an EMBS design to optimize spectrum efficiency, link adaptation and EMBS traffic security - 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. | 04-08-2010 |
20100103911 | Apparatus and method providing an IEEE-802.16 self-organizing network - Systems and methods are disclosed that include a receiver configured to receive a command message a controller configured to interpret the command message. The controller is also configured to perform a scan according to the command message using the receiver. The controller can also transmit a report message based upon one or more parameters within the command message using a transmitter. In some systems and methods, the report message comprises information related to contention within the wireless network. | 04-29-2010 |
20100105395 | Method for the cell ID selection for femtocell basestation - A method for selecting a Cell ID for a base station is provided. The base station may be a Femto base station. The method includes obtaining a neighbor Cell ID corresponding to at least one of a plurality of neighboring base stations. The method also includes selecting a new Cell ID, where the new Cell ID is different than the neighbor Cell ID. The method further includes broadcasting a message containing the new Cell ID. Further, the method includes assigning the new Cell ID to the base station. | 04-29-2010 |
20100113070 | METHOD AND SYSTEM FOR MANAGING PAGING IN WIRELESS COMMUNICATION NETWORK - A method and system for managing paging for a communication device in a paging area is provided. The method at a second base station includes receiving information associated with a movement of the communication device from a first cell region associated with a first base station to a second cell region associated with the second base station in the paging area. The first base station and the second base station are of different cell types. The method then informs a paging controller about the movement of the communication device along with information associated with the communication device when at least one of the first base station and the second base station is a femtocell. The paging controller on receiving a page for the communication device identifies presence of the communication device in a femtocell and manages paging of the communication device in one or more femtocells in the paging area. | 05-06-2010 |
20100153816 | Methods and apparatus to identify the accessibility of femto-base stations in communication systems - A system and method for identifying the accessibility of femto base stations in a communication system. The system and method includes a plurality of macro base stations, open-access femto base stations and femto base stations with different subscriber groups. At least one of the base stations includes a transmitter configured to apply a base station identifier, such as a closed subscription group identifier, as a cyclic redundancy check (CRC) mask to XOR (exclusive OR) the CRC of a broadcast channel communication or an input to generate a scrambling sequence to the broadcast channel communication. | 06-17-2010 |
20100177695 | TECHNIQUE FOR INTERFERENCE MITIGATION USING MOBILE STATION SIGNALING - A Mobile Station (MS) and a Closed Subscriber Group (CSG) Femtocell Base Station (FBS) for Interference Mitigation (IM) in a wireless communication system, and methods for their operation, are provided. A method for operating the MS includes determining if the MS cannot access a first CSG FBS due to interference from a second CSG FBS, the first CSG FBS being a CSG FBS that the MS is authorized to receive service from and the second CSG FBS being a CSG FBS that the MS is not authorized to receive service from, and if it is determined that the MS cannot access the first CSG FBS due to interference received from the second CSG FBS, transmitting an IM-Signal to the second CSG FBS requesting that the second CSG FBS mitigate the interference to the MS. | 07-15-2010 |
20100182949 | METHOD AND SYSTEM FOR GENERATING AND READING AN AUTOMATIC REPEAT REQUEST (ARQ) STATUS FEEDBACK MESSAGE - An automatic repeat request (ARQ) receiver is provided. The ARQ receiver comprises a receiver configured to receive a plurality of ARQ blocks. The ARQ receiver further comprises a processor configured to generate a feedback message configured to provide status of the plurality of ARQ blocks. The feedback message comprises an acknowledgement sequence number (ACK_SN) field and a flag field. The processor is configured to provide a first value in the flag field if the feedback message contains only the ACK_SN field and the flag field. The processor is also configured to provide a second value in the flag field if the feedback message contains one or more fields in addition to the ACK_SN field and the flag field. | 07-22-2010 |
20100195519 | METHOD AND APPARATUS FOR PREVENTING A MISS-DETECTION OF DUPLICATED PACKETS AND AN OUT-OF-SEQUENCE DELIVERY TO THE HIGHER LAYER IN UNACKNOWLEDGED MODE OPERATION - A terminal is configured to perform a method capable of preventing the miss detection of duplicated unacknowledged mode data (UMD) protocol data units (PDU) and out-of-sequence delivery in unacknowledged mode (UM) operations. The terminal includes a receiver configured to not make a slot with a sequence number (SN) of k available to receive in new UMD PDU unless a time has passed such that no more retransmissions of a previous UMD PDU with the SN of k is possible. The terminal also includes a transmitter configured to determine a transmission window size for transmitting UMD PDUs. | 08-05-2010 |
20100203866 | METHODS AND APPARATUS TO IDENTIFY THE ACCESSIBILITY OF BASE STATIONS IN COMMUNICATION SYSTEMS - A system and method for identifying the accessibility of a base station in a communication system. The system includes at least one Closed Subscriber Group (CSG)-Open (hybrid) base station. The base station can apply a base station identifier, such as a CSG identifier, as a cyclic redundancy check (CRC) mask to a first broadcast channel communication and can include the base station identifier in the payload of, or as a CRC mask applied to, a second broadcast channel communication. A mobile station can determine from the base station identifier in the first broadcast communication if the mobile station is a member authorized closed access to the base station. The mobile station can determine from the base station identifier in second first broadcast communication if the mobile station is a non-member authorized open access to the base station. | 08-12-2010 |
20100208660 | METHOD FOR DISTRIBUTED DRX OPERATION FOR EASE OF SCHEDULING AND EFFECTIVE POWER SAVING - A method for improving performance of a discontinuous reception (DRX) mode is provided. The method includes assigning a plurality of DRX Start Offsets to a plurality of mobile stations served by a base station. By assigning a plurality of DRX Start Offsets to mobile stations, the mobile stations will not wake up at the same time, thus preventing excessive signaling overhead as well as improving scheduling and improving the power saved by a mobile station while executing DRX. | 08-19-2010 |
20100302980 | System and method for preserving battery life for a mobile station - A mobile station capable of accessing a wireless communication network having a plurality of base stations is provided. The mobile station is configured to determine if a battery level of the mobile station is below a selected one of a plurality of power level thresholds. The mobile station is also configured to, upon a determination that the battery level is below the selected power level threshold, send a battery report to a first base station of the wireless communication network. The mobile station is further configured to enter a battery power preservation mode. The battery power preservation mode may include an enhanced idle mode, an enhanced sleep mode, or a persistent allocation mode. | 12-02-2010 |
20100304751 | SYSTEM AND METHOD FOR UPLINK COORDINATED MULTIPOINT RECEPTION OPERATION - 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. | 12-02-2010 |
20100323610 | METHODS AND APPARATUS TO SUPPORT PAGING WITH LESS INTERFERENCE IN MULTI-TIER COMMUNICATION SYSTEMS - 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. | 12-23-2010 |
20100332936 | TECHNIQUE FOR ADVANCED ARQ BUFFER MANAGEMENT IN WIRELESS COMMUNICATION SYSTEM - 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. | 12-30-2010 |
20110051649 | METHODS FOR EFFICIENT CONFIGURATION OF CONTROL CHANNEL TRANSMISSION IN WIRELESS SYSTEMS - 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. | 03-03-2011 |
20110051684 | METHODS AND APPARATUS TO SUPPORT COORDINATED INTERFERENCE MITIGATION IN MULTI-TIER NETWORKS - 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. | 03-03-2011 |
20110074629 | TECHNIQUES FOR BAR CODE ASSISTED POSITIONING - 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. | 03-31-2011 |
20110086651 | TECHNIQUES FOR INTERFERENCE MITIGATION IN MULTI-TIER COMMUNICATION SYSTEM - 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. | 04-14-2011 |