Abstract: The present invention facilitates handoffs for a mobile terminal in a wireless access network that is capable of supporting different types of handoffs. The different handoff types may include soft handoffs and fast base station switching (FBSS). In operation, context information associated with supporting wireless communications between the wireless access network and the mobile terminal are determined. Based on whether the context information is shared between base stations involved in the handoff or transferred from one base station to another of the base stations involved in the handoff, a particular handoff type is selected from the different handoff types that are available. Selecting the specific type of handoff to use may also be based on the level of context information that is available, the actual content of the context information, application preferences, channel conditions, base station or mobile terminal capabilities, or any combination thereof.

Abstract: The present invention provides a handover control method in a wireless access system, a relay station and a base station for performing handover control in a mobile multi-hop relay wireless access system such that the wireless access system is enabled to cover a wider area. To achieve the above object, the present invention provides a handover control method in a wireless access system, wherein the wireless access system comprises a mobile station and a base station, which receive and send message via a wireless channel, and further comprises a relay station for forwarding message from the mobile station and the base station under control of the base station, characterized in that the method comprising a relay station measure and arbitration step in which the relay station measures the message and arbitrates whether to relay the message, and a base station measure and handover step in which the base station measures the message and arbitrates whether to perform handover.

Abstract: An enhanced solution for controlling a handover procedure for handing a terminal device over from a source cell to a target cell in a communication network with relay nodes is provided. In the solution, the relay nodes actively assist in the handover procedure by, for instance, initiating the handover procedure, configuring a relayed link and buffering user data at the relay node.

Abstract: Rescue handovers of user equipment, for example, may be accomplished by a method that includes detecting that a downlink radio link cannot be reliably received. The method can also include initiating sending a report that the downlink radio link cannot be reliably received when the detecting indicates that the downlink radio link cannot be reliably received. The method can further include initiating performing a handover upon obtaining handover instructions responsive to the report.

Abstract: Apparatus, methods and computer program products operate a radio network controller in a wireless communications system to determine a factor to be used by user equipment operative in the wireless communications network to determine a gain factor for an E-TFC based on the gain factor of a reference E-TFC; and to signal the factor to the user equipment. The radio network controller may select the factor based on at least one criterion. In another aspect, apparatus, methods and computer program products operate user equipment to receive a factor from a wireless communications network, and to use the factor transmitted by the wireless communications network to determine a gain factor that relates a data signal to be transmitted by the user equipment in a data channel and a control signal transmitted by the electronic device in a control channel, where the control signal transmitted in the control channel carries information for use in receiving the data signal.

Abstract: A method includes computing a minimum sensitivity threshold value for a particular wireless device, configuring the particular wireless device to receive wireless signals with a signal strength higher than the minimum sensitivity threshold value, distributing the minimum sensitivity threshold value to other wireless devices, and configuring the other wireless devices based on the minimum sensitivity threshold value for the particular wireless device.

Abstract: Systems and methods are used to adjust, e.g., reduce, current driving a transmitter, i.e., to reduce transmitter power consumption, based on an actual value of a received signal from received along a cable. For example, this is very beneficial to an Ethernet system where the received signal is attenuated by the lossy cable. In this case, the transmitter power consumption can be lowered during a normal application where data is transmitted and received through the cable.

Abstract: A wireless transmit/receive unit (WTRU) includes circuitry configured to receive information from a base station indicating an assignment of periodic time slots to transmit sounding signals and circuitry configured to transmit sounding signals to the base station in the assigned periodic time slots in response to the received information, wherein a timing of transmission of the sounding signals in response to the received information differs between a time division duplex mode and a frequency division duplex mode, and wherein the transmitted sounding signals are distinguishable from sounding signals from other WTRUs.

Abstract: A method and apparatus to restore always on connectivity to user equipment, the method having the steps of: monitoring whether the user equipment has transitioned to a network that supports concurrent voice and data; performing, upon the monitoring step detecting the transition, a routing area update; checking whether the user equipment was in a voice call at the time of the transition, and if yes, sending a data packet to the network.

Abstract: A method and system for providing a User Equipment (UE) (101) with a Tracking Area Identity (TAI) list during a Tracking Area Update (TAU) procedure. The TAI is UE specific and is based on a visitation history (305) of the UE (101). If a pre-existing visitation history of the UE does not exist, a TAI is compiled using other UEs featuring at least one operational similarity as the current UE (101).

Abstract: The present invention discloses a method for terminal access, and this method includes: receiving an access request sent by a terminal; analyzing the access request to obtain a service type of the terminal; determining a number of residual equivalent users according to a difference between an access equivalent user number threshold corresponding to the service type of the terminal currently and a number of accessed terminals; and determining whether to respond to the access request according to the number of the residual equivalent users and a preset minimum residual equivalent user threshold. The present invention further discloses an apparatus for accessing the terminal. With the present invention, dynamic variation of the wireless environment can be adapted, QoS with higher quality can be provided for the users, and the experience and the feeling of the users are improved.

Abstract: A user equipment is able to transmit, to a wireless access node, an indication of in-device coexistence (IDC) interference between the wireless interfaces. The user equipment can include a counter to track a number of transmissions having the indication of IDC interference.

Abstract: Network node (100), mobile terminal (200), method and computer program wherein a network node (100) or a mobile terminal (200) comprise a transceiver (110, 210) which is adapted for transmitting data frames comprising data transport blocks and redundancy information, further comprising a processing unit (120, 240) receiving at least one parameter value indicative of the quality of a radio channel and at least one message indicative of an actual block error rate for the transmitted data frame, wherein the processing unit (120, 240) determines an expected block error probability for each transmitted data frame and adjusts the at least one received parameter value based on the difference between an at least one previously calculated block error probability and the actual block error rate.

Abstract: Provided is a mobile terminal apparatus which can realize a long-time wait as follows. The mobile terminal apparatus surely performs a reselection process to increase chances to wait for a host communication system, improve the traffic efficiency, and reduce arrival failures while reducing power consumption. A communication method and a radio network system for the mobile terminal apparatus are also disclosed. The mobile terminal apparatus (mobile telephone 10) includes a communication unit (1) and a control unit (8). The control unit (8) uses the communication unit (1) to periodically monitor presence/absence of a predetermined bit of a paging channel in a base station with which communication is in progress.

Abstract: A system and method for allowing legacy circuit switch user equipment (CS UE) to operate via a packet switch system, such as an IP Multimedia Subsystem (IMS) system, is provided. The mobility and session control aspects of communications with the legacy CS UE is separated. A user agent is placed in the receiving node (e.g., a home node B) that acts as the SIP agent for the CS UE for session control. An interworking function is provided to allow mobility between the macro CS network and the PS (e.g., IMS) network. Hand-back and hand-in procedures with service continuity are also provided.

Abstract: A method of scheduling data transmission of transport blocks in an Orthogonal Frequency-Division Multiple Access communication system, wherein each of the transport blocks is transmitted with a respective transmission format and transmission power in a set of physical resource blocks in the frequency domain. The method identifies the relationship between transmission power and the block error rate for a set of transmission formats, and evaluates alternative transmission formats and different numbers of physical resource blocks for at least one of the transport blocks. The method determines a set of alternative transmission formats with different numbers of physical resource blocks, and determines a value indicating the total power difference required to transmit the transport block, while maintaining a target block error rate.

Abstract: A method and apparatus of scanning channels of a white space zone in a wireless local area network is provided. A response frame includes a white space map including information about whether each white space channel in the white space zone is occupied by an incumbent user. Channels of the white space zone are scanned based on the white space map.

Abstract: A radio terminal (10) includes an MIH user (14) configured to manage mobility from the first network to the second network; and an MIH function unit (13) configured to control a handover from the first network to the second network. The MIH user (14) notifies a link controller (12) via the MIH function unit (13) of a condition setting request including a first judgment logical formula being a condition to start an establishment of a radio link with the second network and a second judgment logical formula being a condition to execute a handover from the first network to the second network. The first judgment logical formula and the second judgment logical formula each indicate a combination of thresholds to be satisfied by a plurality of respective link is parameters in the radio link established with the first network.

Abstract: A network comprising a component configured to update an active set (AS) of cells based on a collective consideration of a plurality of cell measurement reports received during radio reconfiguration. Also included is a user equipment (UE), comprising a component configured such that the UE combines a plurality of cell measurement reports triggered briefly before and/or during radio reconfiguration, the combined measurement report used to update an AS of cells. Also included is a method comprising transmitting a radio bearer reconfiguration message, receiving a plurality of cell measurement reports, receiving a radio bearer reconfiguration complete message, and updating a plurality of AS cells using the combined cell measurement reports. Also included is a method comprising receiving a radio bearer reconfiguration message, obtaining a plurality of cell measurement reports, and sending a combined cell measurement report based on the cell measurement reports.

Abstract: Provided are a method for selectively performing a handoff according to a service type, and a system thereof. A home agent provides a target service to a user equipment through a mobile network channel of a mobile network. The user equipment detects entering a wireless access zone of a wireless data network while receiving the target service through the mobile network channel and determines a service type of the target service. The user equipment performs a handoff from the mobile network to the wireless data network in cooperation with the home agent when the service type is a non real-time service and refrains from performing a handoff when the service type is a real-time service.

Abstract: A radio user equipment (UE) mobility status is determined in a communications node. UE mobility status measurements associated with the UE communicating over a radio channel are performed. The UE mobility status corresponds to a degree of variation of the radio channel over time. Channel characteristics of the radio channel at a first time and at a second later time are determined. Based on the determined channel characteristics, a channel characteristic error metric is determined and compared to a predetermined threshold. The UE mobility status is determined based on one or more iterations of the threshold comparison.

Abstract: A wireless communication method and system for controlling the current data bit rate of a radio link (RL) to maintain the quality of the RL. The system includes a core network (CN), a radio network controller (RNC) and at least one wireless transmit/receive unit (WTRU). The RL is established between the RNC and the WTRU. The RNC establishes a guaranteed data bit rate, a maximum data bit rate and a current data bit rate associated with the RL. When the RNC senses an event which indicates that the quality of the RL has substantially deteriorated, the RNC reduces the value of the current data bit rate. Then, in a recovery process, if a similar event does not occur during an established waiting period, the RNC restores the current data bit rate back to the maximum data bit rate.

Abstract: A system and method for multi-cell access are provided. A method includes transmitting at least one control channel to a communications device. The at least one control channel includes control information, and the transmitting is performed by at least one cell in a subset of a cooperating set. The method also includes transmitting to the communications device based on control information transmitted to the communications device, or receiving from the communications device based on control information transmitted to the communications device. The transmitting is performed by at least one other cell in the cooperating set, or the receiving is performed by the at least one other cell in the cooperating set.

Abstract: A communication system employs a transmitting device and a receiving device. The transmitting device allocates certain data, based on transmission data, to both a non-superposed band, corresponding to a frequency band with no interference signal present, and a superposed band, corresponding to a frequency band where an interference signal is present. Alternatively, the transmitting device allocates the data to the non-superposed band while giving a higher priority to the non-superposed band. The transmitting device then generates and transmits a multicarrier signal based on the allocation, so that the receiving device can receive it.

Abstract: Techniques for extending transmission range in a WLAN are described. In an aspect, a receiving station determines the frequency error between a transmitting station and the receiving station based on one or more initial packet transmissions and corrects this frequency error for subsequent packet transmissions received from the transmitting station. The residual frequency error is small after correcting for the frequency error and allows the receiving station to perform coherent accumulation/integration over a longer time interval to detect for a packet transmission. The longer coherent accumulation interval improves detection performance, especially at low SNRs for extended transmission range. The techniques may be used whenever the receiving station knows the identity of the transmitting station, e.g., if the subsequent packet transmissions are scheduled. Other aspects, features, and embodiments are also claimed and described.

Abstract: A handover control method is disclosed, including: obtaining an access mode and a closed subscriber group (CSG) identifier (ID) of a target area; deciding whether to allow an UE to be handed over to the target area according to the access mode and/or whether the CSG ID of the target area is included in the allowed CSG list of the UE. The handover control method can ensure the handover of the UE to the target area that the UE is allowed to access, therefore ensuring service continuity of the UE. A handover control apparatus and a handover control system are also disclosed.

Abstract: A media delivery system and technique are described to enable a media stream to be received at one end on a user's computer, and then re-streamed to a target device in a form that is suitable for that target. As an example of an implementation of such an embodiment, a streaming video and/or audio feed may be received on a user's media center, then re-streamed to a user's designated target device. The target device may correspond to, for example, another computer, a cell phone, or some other media output device.

Abstract: Peer to peer communication timing, e.g., for an ad hoc network, is referenced with respect to an external broadcast signal from a terrestrial or satellite based transmitter. Wireless terminals, seeking to communicate via peer to peer communications, receive the reference broadcast signal, and set their internal timing structure with respect to the reference signal. This facilitates peer to peer timing coordination. A wireless terminal transmits a signal, e.g., a user beacon signal identifying its presence, during a time interval during which another wireless terminal is expected to be monitoring. Reference signal based coordinated timing and use of user beacon signals allows the wireless terminals to maintain situational awareness and coordinate peer to peer communications, while keeping power consumption low, since wireless terminal modules can be powered down during predetermined intervals in the coordinated timing structure where the wireless terminal does not need to transmit and/or receive.

Abstract: Systems and methods are provided for decoding signal vectors in multiple-input multiple-output (MIMO) systems, where the receiver has received one or more signal vectors from the same transmitted vector. For each received signal vector, the receiver evaluates a decoding metric using each possible value of the transmitted signal vector to produce a set of distances. The receiver then combines distances from across the received signal vectors to produce a combined distance associated with each possible value of the transmitted signal vector. Using the combined distances, the receiver may choose among the possible values of the transmit signal vector to determine the actual transmit signal vector.

Abstract: In embodiments a host reserves capacity of a wireless adapter for critical data transmission. Critical data is injected into a transport interface of the host, which passes the critical data to the wireless adapter for wireless transmission to a destination device.

Abstract: A method and apparatus for adjusting a channel quality indicator (CQI) feedback period to increase uplink capacity in a wireless communication system are disclosed. The uplink capacity is increased by reducing the uplink interference caused by CQI transmissions. A wireless transmit/receive unit (WTRU) monitors a status of downlink transmissions to the WTRU and sets the CQI feedback period based on the status of the downlink transmissions to the WTRU. A base station monitors uplink and downlink transmission needs. The base station determines the CQI feedback period of at least one WTRU based on the uplink and downlink transmission needs and sends a command to the WTRU to change the CQI feedback period of the WTRU.

Abstract: A system for error avoidance and automatic recovery is combined with the accurate and reliable transmission system. The present invention provides a multi-variable control system using remote control with a wireless communication system. A plurality of closed loop control systems are connected through the wireless communication system. A master controller monitors the closing of each of the loops in the system and stores information for the status of the control loops in a control table at a control center. When a state variable is transmitted to the control center, a master controller notes that the initial value of the closed loop control system has been set. When the control center sends a control action to equipment or a process this closes the loop, the master controller notes that the closed loop control system has been closed for a particular time. If the closed loop control system does not get a loop closed, the control center immediately detects it.

Abstract: A method and apparatus for supporting enterprise addressing in networks are disclosed. For example, the method creates a Domain Name System (DNS) service record and loading said DNS service record in a public DNS server for a customer, wherein the DNS service record supports a mapping of a domain name of the customer to a sub-domain name of a service provider. The method receives a call destined to a customer endpoint device for the customer; and forwards the call to the customer in accordance with the DNS service record.

Abstract: In an embodiment, vector training signals are received. Noise affecting the training signals is evaluated, and a noise indication is thus determined.

Abstract: An mobile station implements data transport which allows for handover. The mobile station transmits a second datum in response to a first datum received from a wireless base station, the mobile station being characterized in that it comprises: a detection unit which detects that handover is to be performed; and a control unit which provides control such that, in cases where the detection has been made, the changeover timing of the transmission destination for the second datum is made later than the changeover timing of the reception channel for the first datum.

Abstract: The invention is a process and system for controlling selection of which MS is to receive the next packet data transmission on a forward channel and selection of which plural MCS is to be used for the packet data transmissions on the forward channel. A process for controlling selection of MCS method to be used by a BTS (10) to transmit data packets over a forward shared channel to a MS (12) in accordance with the invention stores information at the BTS, the information containing MCS methods which may be selected to transmit data packets over the forward shared channel to the MS; receiving from the MS at the BTS a quality indication of transmission of data packets over the forward channel to the MS; and selecting a MCS method from a plurality of MCS methods which may be used to transmit data packets on the forward channel dependent upon the received quality indication.

Abstract: The present invention concerns a method and a system for establishing a dynamic peer-to-peer communications channel between a first terminal and a second terminal. A first terminal and a second terminal are connectable over secured communications channels to a secured network. The first terminal sends a connection request for establishing a communications channel between the terminals. The connection request is intercepted and analyzed by an analyzer module. The analyzer modules requests network parameters from the first and the second terminals. Based on the intercepted connection request, and the network parameters of the terminals, the analyzer module instructs the terminal to establish a peer-to-peer communications channel over a network distinct from the secured network. Security of the peer-to-peer communications channel may be maintained by means of a central unit of the secured network. In this regard, the central unit may send to the terminal authentication keys and/or encryption keys.

Abstract: Techniques are provided for leveraging narrowband connectivity (such as dial-up communications or other types of low bandwidth communications) to provision or configure broadband connectivity between a broadband access provider and a broadband device, such as a DSL modem or a cable modem. Specifically, because narrowband connectivity does not require advance configuration or provisioning by the host system of connectivity parameters for an access-seeking device, a modem at an access-seeking device may be leveraged to establish a narrowband connection between that device and a host system and to enable an exchange or negotiation of connectivity parameters necessary to enable future broadband connectivity. Thus, once established, the narrowband connection may be used as a conduit for communicating required provisioning information between the broadband-enabling host and the access-seeking device to enable broadband connectivity by the device in the future.

Abstract: Disclosed herein are methods and systems according to which an access terminal intelligently accounts for variations in a set of C/I measurements taken by the access terminal during a pre-determined period of time, so as to more accurately select a desirable forward-link data rate. According to the method, the access terminal makes a first determination that a forward packet error rate (FPER) is greater than an FPER threshold, and makes a second determination that a last-requested forward-link data rate is not the lowest data rate among a plurality of requestable forward-link data rates. The access terminal then responsively identifies a carrier-to-interference-(C/I)-key value based at least in part on one or more C/I measurements taken by the access terminal, and then uses that identified C/I-key value to select—and then request service from a serving access node at—a next-requested forward-link data rate that is less than the last-requested forward-link data rate.

Abstract: Disclosed is a method for configuring a ranging channel in various frame structures and using the same in a communication system. A ranging channel is effectively configured according to a data structure, namely, frame structure, transmitted and received between a mobile station (MS) and a base station (BS) in a wireless communication system, and ranging information is transmitted therethrough to thereby improve performance of a communication channel and resource efficiency. In the wireless communication system, a ranging channel is configured by using a time interval, such as an idle time, an idle symbol, an RTG, a TTG, and the like, not actually used for transmission of data or a signal in a data structure, namely, in a frame structure, transmitted and received between an MS and a BS, to transmit ranging information, so the channel performance and resource efficiency can be improved.

Abstract: Techniques for hosting a communication session between a first communication device and a second communication device in an IP network are described. A contact server establishes separate communication links between itself and the communication devices wherein the communication links may traverse one or more telephony networks. The contact server receives personalized user session data generated by a user of a communication device. The personalized user session data may be indicative of a subjective evaluation of the quality of the communication link or a preference for a particular telephony network. The contact server may then cause the communication device to establish a new communication link with the contact server and handoff from its current communication link to the new communication link when the subjective evaluation of the quality of the communication link crosses a threshold level or a condition for a preference for a particular telephony network is detected.

Abstract: Methods and apparatus for RF handoff in a multi-frequency network. A method includes generating a handoff table that comprises RF channels of current and neighboring local operations infrastructures (LOIs) carrying the same content as a current RF channel; detecting a handoff event; disqualifying one or more of the RF channels from the handoff table based on disqualification criteria; selecting a selected RF channel from remaining RF channels in the handoff table that have not been disqualified; and performing a handoff from the current RF channel to the selected RF channel. Another method includes detecting a handoff event; identifying a start of a handoff time interval; determining if RSSI measurements are available at the start of the handoff time interval for RF channels carrying desired content; and performing a handoff to a selected RF channel having a greatest RSSI measurement.

Abstract: Systems, methods, media, and devices for providing cooperation among digital processing devices in wireless networks are provided. In some embodiments, methods for moving a connection from one point of access to another point of access are provided, sending a request for information from a first mobile node to at least one other node, wherein the request for information contains first information identifying at least one point of access; receiving a response containing second information identifying at least one point of access from the at least one other node; and establishing a connection between the first mobile node and a point of access identified in the second information. In some embodiments, devices that can move a connection from one point of access to another point of access are provided.

Abstract: In a wireless video communication system, a wireless camera has an image capturing unit for generating video data, a video clipping unit for generating high priority video data and lower priority video data having mutually different image regions from the video data, a first and a second wireless communication unit for communicating with a first and a second access point and a communication control unit for controlling the wireless communication by the first and second wireless communication units. The communication control unit can cause the high priority video data and lower priority video data to be transmitted from the first and second wireless communication units as two individual video streams, and is configured to determine whether each wireless communication unit should transmit none, one or both of the video streams depending on the wireless communication quality and the condition of a handover.

Abstract: For Wireless Communications Networks (WCNs) that support soft handover, cooperator receiver selection for a TDOA, AOA, TDOA/AOA, or hybrid network-based or network-overlay Wireless Location System (WLS) must contend with one or more network base stations as a serving cell. When the active set contains more than one member, two techniques for determining a set of cooperating and demodulating receivers to use in the signal collection for location estimation is disclosed. In one embodiment, the active set members are constructively reduced to a single member that is used as a proxy serving cell. In another embodiment, the information contained in the active set membership is retained and a new set of demodulating and cooperator receivers are generated based on the entire membership of the active set.

Abstract: Techniques for performing power control and handoff are described. In an aspect, power control (PC) is supported with multiple PC modes such as an up-down PC mode and an erasure-based PC mode. One PC mode may be selected for use. Signaling may be sent to indicate the selected PC mode. If the up-down PC mode is selected, then a base station estimates the received signal quality for a terminal and sends PC commands to direct the terminal to adjust its transmit power. If the erasure-based PC mode is selected, then the base station sends erasure indications that indicate whether codewords received from the terminal are erased or non-erased. For both PC modes, the terminal adjusts its transmit power based on the power control feedback (e.g., PC commands and/or erasure indications) to achieve a target level of performance (e.g., a target erasure rate for the codewords). The erasure indications may also be used for handoff.

Abstract: The present invention discloses a method for processing handover capability and a base station, wherein the method includes: before the Radio network Resource Control Re-establishment (RRC) is initiated in User Equipment (UE), a target base station of a target cell of the UE obtains Closed Subscriber Group (CSG) handover capability of the serving cell from the serving base station; when the RRC connection is in reestablishment, the target base station of the target cell processes the RRC connection reestablishment according to the obtained CSG handover capability. The present invention enables the behavior in UE and in the network keep in alignment after the UE finishes RRC connection reestablishment in the target cell while before it receives the first RRC connection reconfiguration message which is transmitted by the target cell.

Abstract: Aspects of a method and system for near continuous data rate limit adjustment via a plurality of link variables in an energy efficient network. In this regard, power consumption of a network device may be controlled by enabling and/or disabling one or more components in the network device based on an adjustment of a plurality of data rate variables that control a data rate limit at which the network device may communicate. Exemplary data rate variables may comprise a number of active channels of a network link over which the network device communicates, a symbol rate on an Ethernet link over which said network device communicates, an inter-frame gap time on an Ethernet link over which said network device communicates, a signal constellation utilized for representing signals on an Ethernet link over which said network device communicates.

Abstract: A capture frequency decision method of deciding a capture frequency by executing a frequency search in which a correlation operation on a received signal, which is a CDMA (Code Division Multiple Access) signal, is performed at a plurality of search frequencies, includes: executing a first frequency search; setting a frequency for a side lobe check on the basis of a correlation integration time used in the first frequency search; selecting a plurality of search frequencies including the frequency for a side lobe check on the basis of a result of the first frequency search; executing a second frequency search of performing the correlation operation at the plurality of selected search frequencies; and deciding a capture frequency by executing a third frequency search using a result of the second frequency search.

Abstract: Systems and methods are provided for decoding signal vectors in multiple-input multiple-output (MIMO) systems, where the receiver has received one or more signal vectors based on the same transmitted vector. The symbols of the received signal vectors are combined, forming a combined received signal vector that may be treated as a single received signal vector. The combined received signal vector may be equalized by, for example, a zero-forcing or minimum-mean-squared error equalizer or another suitable linear equalizer. Following equalization, the equalized signal vector may be decoded using a simple, linear decoder.