Abstract:
Methods and apparatuses for facilitating switching HSPA (high speed packet access) serving cells from each of an RNC (radio network controller), base station, and access terminal are provided. The RNC pre-configures an access terminal and each base station in an active set for HS-DSCH operation by providing identification codes identifying each of the base stations. The RNC transmits data packets tagged with sequence numbers to each base station where they are synchronously buffered. The access terminal initiates a handover by transmitting a PDU (protocol data unit) to each of the base stations. The PDU is encoded with the identification code of a target base station and a sequence number of a subsequent packet. The target receives the PDU and directly completes the handover with the access terminal.
Abstract:
PROBLEM TO BE SOLVED: To provide techniques for performing handover in order to maintain call continuity for user equipment (UE).SOLUTION: The UE communicates with a first cell in a radio access network (RAN) for a packet-switched (PS) call, e.g., for Voice-over-Internet Protocol (VoIP) via High-Speed Packet Access in W-CDMA. The UE sends measurement reports to the RAN and receives trigger from the RAN. The UE establishes a circuit-switched (CS) call with the first cell while the PS call is pending at the first cell. The UE then performs handover of the CS call from the first cell to a second cell, which may not support VoIP.
Abstract:
PROBLEM TO BE SOLVED: To provide an inter-system handover system that efficiently supports hand-down and hand-up to different radio access technologies.SOLUTION: Latency and handover connection failures are reduced by an access node (nodeB) broadcasting information about a neighboring system (target) when a UE 12 reception (RX) capability is both inside and outside a reception range of the neighboring system. A optimized list of neighboring RAT systems (targets) are broadcast from a network, including measurement parameters and reporting instructions. Thereby, reporting driven by the UE 12 minimizes the latency. The UE 12 reports other-system searches to network only if needed for a handover. In addition, handover requests can be bundled with other system measurement information, if necessary, for additional efficiency.
Abstract:
PROBLEM TO BE SOLVED: To provide Serving Radio Network Subsystem (SRNS) relocation procedures in wireless communication systems.SOLUTION: A method for SRNS relocation comprises sending a relocation request from a Source Node B+ to a Target Node B+ based on measurements received from a User Equipment; sending a Physical Channel reconfiguration message from the Source Node B+ to the UE; forwarding Packet Data Units (PDU) from the source Node B+ to the Target Node B+; and performing physical layer synchronization and radio link establishment with a target cell of the Target Node B+.
Abstract:
PROBLEM TO BE SOLVED: To provide techniques for quickly and efficiently performing handover.SOLUTION: UE may maintain uplink synchronization with one or more non-serving cells in a candidate set, without having to maintain links with any of the non-serving cells. The UE may update uplink synchronization with the non-serving cells via an access procedure, e.g., send access probes to the non-serving cells and receive timing adjustments from these cells. One non-serving cell with which the UE has maintained uplink synchronization may be selected as a target cell for handover. The UE may then perform handover from the serving cell to the target cell, without performing uplink synchronization during the handover, which may improve handover latency and success rate.
Abstract:
PROBLEM TO BE SOLVED: To provide a method for access control in a femto cell.SOLUTION: The method comprises: assigning at least one femto cell to correspond to a first identifier that identifies valid access to the femto cell; storing a list comprising at least one second identifier and at least one first identifier (where a second identifier corresponds to an AT and the list indicates valid first identifier and second identifier pairs); receiving, at a femto cell, a request from an AT for access (1030); sending, by the femto cell, the first identifier to at least one access control component (1035); determining, from the list, whether a second identifier for the AT corresponds to a valid first identifier for the femto cell (1040); and granting access to the AT at the femto cell in response to the request if the AT is identified.
Abstract:
Methods and apparatuses for facilitating switching HSPA (high speed packet access) serving cells from each of an RNC (radio network controller), base station, and access terminal are provided. The RNC pre-configures an access terminal and each base station in an active set for HS-DSCH operation by providing identification codes identifying each of the base stations. The RNC transmits data packets tagged with sequence numbers to each base station where they are synchronously buffered. The access terminal initiates a handover by transmitting a PDU (protocol data unit) to each of the base stations. The PDU is encoded with the identification code of a target base station and a sequence number of a subsequent packet. The target receives the PDU and directly completes the handover with the access terminal.
Abstract:
temporização e operação de pich-hs sistemas e metodologias que facilitam o emprego de um canal indicador de paginação associado aos canais de alta velocidade em uma rede de comunicações sem fio são descritos. uma transmissão de indicador de paginação pode ser enviada no canal de paginação para um ou mais dispositivos móveis. o indicador de paginação indica que se espera que informações adicionais, como mensagens de paginação completas, outro dados de plano de controle ou outro dados de plano de usuário, sejam transmitidas em um instante de tempo específico (por exemplo, subquadro) no canal de alta velocidade associado. um conjunto de parâmetros pode ser transmitido em canais comuns que especificam um conjunto de subquadros associados em um canal de alta velocidade. os dispositivos móveis podem analisar o conjunto de parâmetros para determinar os subquadros associados e receber os subquadros de acordo com uma programação.