Abstract: A method for communications between neighboring wireless cells such as wireless regional area networks operating according to IEEE 802.22 specifications. The method involves scheduling inter-base station communications for over-the-air connections to allow neighboring base stations to communicate in environments where a single available channel is shared between the neighboring cells or where two or more channels used by two or more neighboring cells. In some embodiments, a bridge system, such as a bridge consumer premise equipment (CPE), positioned in an area of coverage overlap between two cells is used for inter-base station communications, and allocation and scheduling of bandwidth on the utilized channels is performed to provide interference free communications between the base stations. Existence announcements are provided in coexistence time slots and requests for bandwidth such as reserved and additional time slots are transmitted between the base stations using the coexistence time slots.

Abstract: A local communication apparatus for communicating with another apparatus via a relay apparatus receives communication interface information that has been transmitted by the other apparatus, acquires information relating to the communication rate of the local apparatus, compares the received communication interface information with the acquired information relating to the communication rate of the local apparatus, and switches over a connection-destination relay apparatus based upon result of the comparison.

Abstract: The present invention provides a method for implementation in a cable modem termination system that is communicatively coupled to a first wireless access device configured to provide wireless connectivity to at least one mobile unit. The method includes receiving a request to allocate resources to the first wireless access device for a wireless connection to the mobile unit. The requested resources are determined based upon a quality of service associated with the mobile unit. The method also includes determining whether to grant the request for the resources based on policy information received from a policy server and providing information indicating whether the requested resources have been granted.

Abstract: MIMO systems communicate with wireless devices. MIMO systems include directional antennas that are oriented so that the physical sectors of the antennas overlap to form areas of overlap. Some physical sectors overlap substantially while others overlap partially. Radios are selectively coupled to antennas to communicate with the wireless devices. The physical sectors of the antennas that are selectively coupled to the radios overlap. The radios use the antennas to communicate with the wireless devices. The antennas operate as a MIMO antenna.

Abstract: A radio communication system includes: a first base station for communicating with a mobile station in a first area; and a second base station for communicating with the mobile station in a second area; the first base station including: a first receiving unit for receiving connection control information from the second station; a first setup unit for generating scheduling information; and a first transmitting unit for transmitting the generated scheduling information to the second base station and for transmitting the data decided to send to the mobile station on the basis of the scheduling information; the second base station including: a second transmitting unit for transmitting the connection control information and for transmitting the data decided to send to the mobile station on the basis of the scheduling information; and a second receiving unit for receiving the scheduling information from the first base station.

Abstract: A method and apparatus for measuring a channel quality in wireless transmit/receive units (WTRUs) which are equipped with a subscriber based smart antenna. The WTRUs are equipped with a smart antenna so that the WTRU generates a plurality of directional beams and, optionally, an omni-directional beam. A dwell time is provided in a measurement period to switch a beam from an active beam to a non-active beam. The active beam is one of the plurality of directional beams or, optionally, the omni-directional beam, for communication with one or more serving base station(s). A beam is switched to a non-active beam at the initiation of the dwell time. Signals are received through the switched non-active beam, and samples of the received signals are generated. The samples are stored in a memory. Channel quality is measured using the samples, whereby the dwell time to measure the channel quality is minimized.

Abstract: A method and apparatus for expanded cell search and selection in a mobile wireless device. The mobile device locates cells in a first of neighbor cells and in a second list of stored cells and evaluates located cells using suitability criteria. When locating a suitable first cell that uses a first radio access technology (RAT) in the first list, the first cell is selected. When locating a second suitable cell that uses a second RAT in the first list and not locating a suitable cell that uses the first RAT in the second list, the second cell is selected. When locating a third suitable cell that uses the second RAT in the first list and locating a fourth suitable cell that uses the first RAT in the second list, the fourth cell is selected when more suitable than the third cell.

Abstract: Systems and methodologies are described that facilitate supporting uplink soft handoff in a UMTS TDD wireless communication environment. A virtual active set (VAS) for each user device can be generated at the network side of the communication environment, and sectors listed in each VAS can be informed of their respective listings. Sectors in a user device's VAS can be provided with a scrambling code and resource assignments from a nominal sector serving the user device, which information can be employed to attempt to receive and demodulate uplink signals from the user device at all base stations in the VAS thereof. Additionally, such resources can be employed to transmit power control and reverse activity commands to the user device on the downlink.

Abstract: It is provided a mobile communication system comprising base stations, call control servers and access gateways. The call control servers cause a mobile terminal accommodated in one of the control server to transmit the location registration request so that the mobile terminal accommodates in another control server according to a processing amount of control signals. The base station selects a second call control server into which the one of the mobile terminals is to be newly accommodated. The one of the call control server switches to a power-saving state after the mobile terminal is accommodated into the another call control server.

Abstract: A method for accessing a hybrid network including a wide area network and a distributed network, a gateway apparatus, a wireless terminal and a gateway communication system are disclosed for reducing the power consumption of the wireless terminal which is an access gateway. The method comprises: sensing by a gateway apparatus a relay request slot on a downlink common control channel of the wide area network; transmitting by a wireless terminal a relay request signal requesting to relay a data packet to be transmitted, in the relay request slot on the downlink common control channel; and if the relay request signal from the wireless terminal is sensed in the relay request slot, establishing by the gateway apparatus a connection with the wireless terminal in a distributed network environment.

Abstract: Provided is a more efficient manner of transmitting a control message to reach into a neighboring sector (e.g., inter-sector) of a wireless network environment. The control message can be utilized for purposes such as handoff, indicating an amount of interference, inter-sector power control for managing inter-sector interference, sector loading, or other control messages. The control message can be placed on a set of resources utilizing planned reuse and/or statistical reuse. Statistical reuse includes selecting a subcarrier set for carrying the control message. According to some aspects, the control message can be sent over a backhaul channel.

Abstract: Technologies are described herein for improving call quality and coverage of cells within a mobile wireless communication network. Such improvements can be accomplished by adjusting various radio access network parameters. The adjustments may be made at the cell level or at the neighbor level. An iterative process can periodically collect key performance indicator (KPI) statistics from the mobile wireless network. System improvements may derive from one or more rules applied in parallel. Each rule can have a unique combination of minimum or maximum KPI thresholds. System issues may be identified when a cell correlates with one or more of the rules which may then suggest one or more parameter changes to reduce the identified system issue. System capacity policies may be provided as limits to the coverage and call quality triggers.

Abstract: A method is provided of controlling transmission power of a picocell base station. The method comprises the steps of the picocell base station: transmitting a signal at a first power; receiving a report from a mobile terminal that the signal is received within a predetermined quality range; dependent upon receiving said report instructing the mobile terminal to report as to the number of neighboring macrocells detected by the mobile terminal; and controlling the transmission power of a further signal dependent upon said number.

Abstract: A method of performing handover in a mobile communication network, a mobile communication terminal using the same, and a mobile network system are provided. The method of performing handover in a mobile communication network includes: receiving QoS requirement on a mobile service basis from a user terminal; determining a most suitable mobile network to QoS requirement of a mobile service as a network for handover; and requesting handover to a base station of a mobile network determined as a network for handover. Therefore, in consideration of characteristics of a mobile network and a quality of a service used by a user, by determining handover to an optimum mobile network on a service quality basis, service interruption due to performing unnecessary handover can be prevented and by effectively distributing traffic of a mobile network, overload of a system can be prevented.

Abstract: Provided is a power control method and resource management method of a femtocell base station in a wideband wireless access system. A macrocell base station receives received signal strength from a femtocell base station in a macrocell of the macrocell base station, compares it with received signal strength reported by a terminal in the macrocell, and when a difference between the two received signal strength is less than a threshold value, it receives received signal strength on a signal received by the terminals in the macrocell from the corresponding femtocell base station. Further, the macrocell base station determines whether the corresponding macrocell terminal is located in the coverage of the femtocell base station based on the reported received signal strength of the femtocell base station, and transmits information for controlling power of the femtocell base station or managing a radio resource to the femtocell base station according to the determination result.

Abstract: A wireless local access network (WLAN) radio listens for a beacon for a listening duration on each of multiple channels. Periodically, the WLAN radio changes the channel on which the WLAN radio listens for a beacon. The WLAN radio rotates through all channels until an entire beacon period is listened to. The number of iterations is chosen to minimize the overlap of successive listening durations. The WLAN radio can detect a beacon by detecting an incomplete portion of a beacon.

Abstract: An embodiment of the present invention provides an apparatus, comprising a wireless station (STA) operable to communicate with a first access point (AP) and roam to a next access point (AP), wherein said next AP pre-caches a number of IP addresses from a backend Dynamic Host Configuration Protocol (DHCP) server; and wherein said wireless station (STA) gathers IP layer address and sub-network information from said next Access Point (AP) during roaming.

Abstract: Methods and systems are disclosed for testing radio-frequency handoffs between two radio-frequency sources by a wireless communication device within an enclosed test chamber. The test chamber may include at least two radio-frequency antennas defining at least two radio-frequency coverage areas that are partially separated by a radio-frequency barrier wall. A wireless communication device may be moved within the test chamber while radio-frequency conditions and handoff status may be monitored by a control system.

Abstract: A mobile station apparatus, which is used in a mobile communication system including plural base stations, includes a receiver that receives a first signal from any one of the base stations of a first cell group covering a relatively large area and of a second cell group covering a relatively small area; a determining unit that determines an intermittent receiving cycle based on the received first signal; and a setting unit that, based on the determined intermittent receiving cycle, selects a cell group from among the first cell group and the second cell group, and sets the receiver to perform intermittent reception of a second signal transmitted from a base station belonging to the selected cell group.

Abstract: A method for inter-RAT idle handoff is provided by transmitting a handoff initiation signal from a cell associated with a carrier for a first Radio Access Technology (RAT) area, the cell being located in an overlap coverage area with a second RAT area and adjacent to the second RAT area. Spatial hysteresis is provided by the new triggering method to eliminate the ping-pong issue when a mobile move along the border area. The invention also reduces network resource consumption due to ping-ponging.

Abstract: Systems and methods of operating multimode 3G/4G communications devices in an overlapping 3G/4G coverage area (e.g., WiMAX or LTE/CDMA-EvDO) include determining a loading condition of the 3G and 4G base stations. If the 3G and 4G base stations are lightly loaded, one or more 4G Channel Quality Indicators (CQI) are compared with one or more corresponding 3G Data Rate Control (DRC) indices to determine which of the 3G and 4G networks allows a higher data throughput. The dual mode communications device is handed off to a 4G base station associated with the 4G coverage if the 4G network allows the higher data throughput; otherwise, the dual mode communications device is handed off to a 3G base station. User priorities, application categories, and/or MIMO and diversity modes may be used to determine handoff if the base stations are more than lightly loaded.

Abstract: A handover method is provided, in which a measure of signal strength is obtained between a user terminal and each of one or more candidate cells, relative to signal strength between the user terminal and a source cell. For candidate cells, a threshold is set that depends on a measure of loading of the source cell and a measure of loading of the candidate cell. For the target cell, a particular candidate cell is identified for which the measure of signal strength exceeds the threshold set for that particular cell. The user terminal is connected to the target cell. In specific embodiments, the threshold for each candidate cell depends on a load differential between the source cell and the candidate cell.

Abstract: A system and methodology that facilitates triggering device scanning and efficient femtocell detection in areas dominated by macro cells is provided. In particular, the system can includes a jamming component that generates a small and measured amount of interference to user equipment or user equipments (UEs) camping on nearby macro carriers. Moreover, the power utilized to introduce the interference can be enough to cause macro signal quality around the femtocell access point (AP) to fall below a scan trigger level. The UE(s) can detect the macro signal quality decline below the scan trigger level and scan other frequency bands, including the femtocell, on which to camp. Additionally, the system can perform femto pilot gating, such that the jamming component can scan the radio environment surrounding the femto AP during an off state, to determine information that facilitates jamming of a macro pilot.

Abstract: Provided is a method of allocating a channel time in a wireless personal area network (WPAN). In a WPAN where a parent piconet and at least one child piconet coexist, the method includes receiving a request frame transmitted from at least one of a plurality of child piconnet coordinators (PNCs) in order to request channel time allocation for data transmission, according to a common mode that is a PHY transmission mode commonly supported by a parent PNC and the child PNCs; and transmitting a beacon frame including channel time allocation information corresponding to the request frame to all the child PNCs of the WPAN.

Abstract: A cellular communication system comprises an access point (101) which supports an underlay cell of a first cell on an underlay frequency using another frequency. A proximity detector (113) detects user equipment (109) in response to a wireless transmission therefrom, which uses a different transmission technology from a transmission of the cellular communication system. In response to the proximity detection, the access point (101) temporarily transmits a pilot signal on the first cell frequency. The user equipment (109) is then switched to the access point (109) and the underlay frequency in response to a detection indication from the user equipment (109) indicating that the pilot signal has been detected. Following the switch the access point (101) terminates the transmission of the pilot signal.

Abstract: Disclosed is a method and system for transmitting/receiving a neighbor base-station information message in a broadband wireless access system. A base station sets and transmits a neighbor base-station information message, which includes a specific flag field for limiting neighbor base-station information and a reserved field and omits iterative neighbor base-station information depending on a value set in the specific flag field, thereby increasing a transmission efficiency. A mobile terminal receives the neighbor base-station information message from the base station, checks the received message, and then updates an operator ID according to the value set in the specific flag field.

Abstract: A method of transmitting cell information is disclosed. The method includes the steps of transmitting a primary broadcast channel at constant intervals in a cell of a mobile communications system; broadcasting, in the primary broadcast channel, scheduling information indicating a location of a first scheduling unit, including information to be broadcast in the cell; and broadcasting, in the first scheduling unit, information indicating whether the cell is a dominant cell or a subordinate cell.

Abstract: There is provided a method and apparatus for handling handover of a mobile terminal in a mobile communications network. The mobile communications network comprises both radio access network and core network portions. Handover is from a source cell served by a source Mobile Switching Center to a target cell served by a target Mobile Switching Center. The source Mobile Switching Center generates a request for handover message and sends it to a Handover Routing Router. At the Handover Routing Router, an identity of the target cell or a target node is determined from the request, and the target cell or node identity is mapped to the address of the target Mobile Switching Center. The request for handover is then sent from the Handover Routing Router to the target Mobile Switching Center.

Abstract: A mobile communication system 100 according to the present invention comprises handover control apparatus 1 and radio terminal unit 10. The handover control apparatus 1 controls handover of a radio terminal unit 10 between access routers 31-34 provided in respective base stations 21-24 for radio communication with the radio terminal unit 10. The handover control apparatus 1 counts the number of relay routers for every candidate access router 32-34 for a destination of the radio terminal unit 10, from a gateway device 52 and determines a COR on the basis of the number of relay routers for every access router 32, 33, 34 thus counted.

Abstract: A system for communicating with wireless devices. The systems includes radio groups whose MIMO physical sectors overlap. The MIMO physical sectors communicate using different channels. The MIMO physical sectors overlap to form an area of overlap. Each radio group includes a phased array and radios. Radios are selectively coupled to the phased array. The physical sector of the phase array provides the MIMO physical sector. The phase array operates as a MIMO antenna.

Abstract: A radio communication system includes a plurality of base station apparatuses. In the radio communication system, the communication areas of the plurality of base station apparatuses are connected in a loop to form a borderline separating the inside and the outside of a management area. The radio communication system detects a mobile terminal which enters the management area by crossing the borderline on the basis of communication between the base station apparatuses and a mobile terminal.

Abstract: When communication quality exceeds the first threshold, the radio communication terminal 300 starts connection with the radio communication system 120 and establishes the radio link L2 to the radio communication system 120. Further, a handover from the radio link L1 to the radio link L2 is performed when the communication quality exceeds the second threshold after the establishment of the radio link L2, the second threshold corresponding to communication quality degraded than that indicated by the first threshold.

Abstract: An apparatus and method of determining a mobility state is provided. A user equipment determines a size of a cell to be reselected by performing cell reselection, and determines the mobility state on the basis of the number of cell reselections and a size of the cell. Unnecessary cell reselection can be avoided even if the user equipment enters an area where a micro cell and a macro cell coexist.

Abstract: Radio stations in a radio communication system send messages from one radio station to another either directly or via one or several radio stations forwarding the messages by using radio resources. The radio resources are allocated in a decentralized manner to radio stations to send the message. At least one radio station sends information about first radio resources used for sending at least one message to the at least one radio station, the information about the first radio resources being sent by using second radio resources that are allocated to the at least one radio station.

Abstract: The present invention relates to a method and arrangement for cell type information sharing between neighbor base stations (310, 330) in a telecommunications system (300). One embodiment comprises informing a second radio base station (330) serving a second cell (340) and having a neighbor relation with a first cell served by a first base station (310), of at least the cell type of the first cell. This is accomplished by adding (410) the cell type information to a set of information to be signaled to the second base station, and then signalling (420) the set of information to the second base station.

Abstract: Disclosed is a method for a femtocell to reduce interference with an overlapping macrocell. The femtocell determines soft-frequency-reuse (“SFR”) information of the macrocell. From that information, the femtocell determines which frequency sub-channels are assigned by the macrocell for its cell-center users and which frequency sub-channels are assigned for cell-edge users. (Cell-edge users are given a higher transmission power profile in order to overcome potential interference with neighboring macrocells.) Then, the femtocell selects from the cell-center user frequency sub-channels for transmission to the femtocell's users. By transmitting on the cell-center user frequency sub-channels, the femtocell reduces interference with the overlapping macrocell. The femtocell continues to update its knowledge of the macrocell's SFR information and re-assigns frequency sub-channels as the SFR changes.

Abstract: A method for power management in handover between heterogeneous networks comprising: an MIH layer obtains power information and provides it for an MIH user layer; the MIH user layer determines the handover policy according to the power information. In various embodiments of the disclosure, the MIH layer triggers an event so that the MIH user layer can obtain power information, and select a lower-layer network connection automatically according to the current power status, thus implementing handover; the MIH user layer sends a query request to the MIH layer to obtain power consumption parameters from the network, and selects a lower-layer network connection according to the power consumption and the current power status, thus implementing handover and making more accurate and effective decisions in the handover.

Abstract: If a handoff by a mobile station currently associated with a particular access point is probable, then the particular access point sends an activation alert to one or more other access points. An access point receiving the activation alert that is in a low-power state enters a higher-power state. An access point receiving the activation alert that is in a higher-power state, remains in that higher-power state.

Abstract: A method is disclosed for disambiguating a reported pilot signal so as to facilitate handoff of a mobile station. When a radio access network (RAN) receives from a mobile station a handoff request carrying a parameter that ambiguously identifies at least two sectors as the potential handoff target, the RAN will send a test probe on at least one of the potential handoff target sectors and will determine, based on mobile station response to the test probe, which sector the mobile station received the test probe on and thus which sector was the intended handoff target. The RAN may then direct the mobile station to hand off to that sector if appropriate. Further, the RAN may add the identified sector into a neighbor list of a similarly situated other mobile station, to allow the other mobile station to more efficiently hand off to the same sector if appropriate.

Abstract: A method and apparatus are provided for defining terminal behavior in a case where the terminal detects that it cannot receive the HS-DSCH from a serving cell reliably when the DCCH is mapped to HS-DSCH (e.g. does not receive any radio link control (RLC) acknowledged mode feedback for the uplink measurement reports or in general the common pilot channel (CPICH) level drops too low in the serving HS-DSCH cell). The terminal is autonomously moved to a cell forward access channel (CELL_FACH) state and uplink signaling is initiated on a random access channel (RACH) to inform a network node and ask for HS-DSCH re-establishment in a suitable cell (preferably in the one being strongest one in the active set or according to the measurements done prior the connection from the serving HS-DSCH cell was lost), or setting up a regular R?99/R?5 DPCH in order to restore the RRC signaling connection in the CELL_DCH state.

Abstract: A base station 100 included in a first radio communication system includes: a monitor instruction unit 130 configured to instruct a mobile station 10 to monitor a reception power of an interference signal transmitted using a frequency assigned to a second radio communication system (frequency b) when the radio communication with the mobile station 10 performed using a frequency a is interrupted; and a handoff instruction unit 140 configured to instruct the mobile station 10 to switch the frequency used in the radio communication to a frequency e not interfered with by the interference signal, in accordance with the reception power monitored by the mobile station 10.

Abstract: Apparatus, and an associated method, for facilitating paging of access terminals by way of a quick page message. A partial identity comparison scheme is utilized. Identifiers of access terminals that are to be paged in the quick page message are determined and compared. In the event that the identifiers are of redundant values, the redundant values are removed, thereby to provide additional locations in the quick page message that are not redundant for use better to page the access terminals that are to be paged.

Abstract: A radio frame control apparatus for controlling a radio frame of an orthogonal frequency division multiple access system, having a placement information generation section generating first placement information including a radio resource amount assigned to each terminal station based on a received radio resource request, a pseudo placement information generation section generating pseudo placement information including a temporal radio resource amount assigned to pseudo communication, a radio resource assignment section generating second placement information by inserting the pseudo placement information into the first placement information.

Abstract: Systems, methods, and computer-readable media for basing a handoff of a mobile device on its position within a coverage area of a source base transceiver station (BTS) are provided. Initially, embodiments involve recording threshold distances, associated with candidate BTSs neighboring the source BTS, and capturing pilot strength measurement messages (PSMM's) at each of the threshold distances. Upon establishing a connection to the source BTS, the position of the mobile device is monitored to detect a traversal of the threshold distances. Consequently, the mobile device reports a current PSMM for comparison against the captured PSMM's. If any messages correspond, a candidate BTS is selected for receiving the connection of the mobile device. Otherwise, the connection to the source BTS is maintained. Accordingly, the distance of the mobile device from the source BTS at which the handoff is invoked may vary based on a radial direction of the mobile device therefrom.

Abstract: A communication system comprises a radio to transmit and receive communication signals to and from a selected ground station; and a management unit coupled to the radio and operable to dynamically set a threshold value for selecting another ground station based on a signal strength corresponding to the selected ground station. The management unit is operable to select another ground station when a signal strength corresponding to the other ground station exceeds the signal strength corresponding to the selected ground station by more than the threshold value set by the management unit.

Abstract: One or more identifiers are set for each terminal and a priority ranking is allocated to each identifier to determine priority of one scheduling command relative to any other scheduling command. A data block is transmitted from the base station to the, or each, terminal, including the scheduling command and at least one identifier. Each terminal indicated by the identifier adapts its power level or data rate in accordance with the scheduling command.

Abstract: The invention relates to methods, systems, and satellites that employ an off-set pattern of spot-beams to transmit signals or television signals over a desired area of the earth. In one example, a heavily populated metropolitan area in the continental United States is covered by at least two patterns of spot-beams, where the patterns are off-set to one another by a lateral or translational displacement, rotation, or both. The off-set patterns can be used in conjunction with existing satellites and systems and incorporated into new satellites and systems. The methods reduce problems associated with the straddling of subscriber areas caused by local-into-local requirements, and advantageously allow increased spot-beam capacity, and the reduction in earth uplink stations.

Abstract: A method used in a receiver includes measuring first Received Signal Strength Indications (RSSIs) in respective first communication channels, which are located in a given frequency band and which each have a first channel bandwidth. Based on the first RSSIs, second RSSIs are computed for respective second communication channels, which are located in the given frequency band and which each have a second channel bandwidth that is larger than the first channel bandwidth. At least one of the first and second communication channels over which to receive signals at the receiver are selected using the first and second RSSIs.

Abstract: A method for wireless communication begins by determining whether legacy devices are within a proximal region of the wireless communication. The method continues, when at least one legacy device is within the proximal region, formatting a frame to include: a legacy preamble; a signal field; an extended preamble; at least one additional signal field; at least one service field; an inter frame gap; and a data field.

Abstract: A management apparatus instructs a wireless terminal wirelessly connecting to a first base station to switch wireless connection to a second base station. After the wireless terminal switches the wireless connection to the second base station as instructed, the wireless terminal transmits a message for updating information used for determining a forwarding destination of the message received by the relay apparatus. The relay apparatus updates the information used for determining the forwarding destination of the received message based on the message transmitted from the wireless terminal.