METHODS AND APPARATUS FOR SUPPORTING UPLINKS WITH REMOTE BASE STATIONS
    4.
    发明公开
    METHODS AND APPARATUS FOR SUPPORTING UPLINKS WITH REMOTE BASE STATIONS 有权
    方法和设备用于支持上行链路的远程基站

    公开(公告)号:EP1894325A2

    公开(公告)日:2008-03-05

    申请号:EP06772843.6

    申请日:2006-06-12

    IPC分类号: H04B7/26

    摘要: A wireless terminal using OFDM signaling supporting both terrestrial and satellite base station connectivity operates using conventional access probe signaling in a first mode of operation to establish a timing synchronized wireless link with a terrestrial base station. In a second mode of operation, used to establish a timing synchronized wireless link with a satellite base station, a slightly modified access protocol is employed. The round trip signaling time and timing ambiguity between a wireless terminal and a satellite base station is substantially greater than with a terrestrial base station. The modified access protocol uses coding of access probe signals to uniquely identify a superslot index within a beaconslot. The modified protocol uses multiple access probes with different timing offsets to further resolve timing ambiguity and allows the satellite base station access monitoring interval to remain small in duration. Terrestrial base station location/connection information is used to estimate initial timing.

    LDPC DECODING METHODS AND APPARATUS
    7.
    发明公开
    LDPC DECODING METHODS AND APPARATUS 审中-公开
    方法和装置LDPC解码

    公开(公告)号:EP1787396A2

    公开(公告)日:2007-05-23

    申请号:EP05773698.5

    申请日:2005-07-20

    IPC分类号: H03M13/00

    摘要: A flexible and relatively hardware efficient LDPC decoder (900) is described. The decoder cai be implemented with a level of parallelism which is less than the full parallelism of the code structure used to control the decoding process (901). Each command of a relatively simple control code used to describe the code structure can be stored and executed multiple times to complete the decoding of a codeword. Different codeword lengths (912) are supported using the same set of control code instructions but with the code being implemented a different number of times depending on the codeword length. The decoder can switch between decoding codewords of different lengths, without the need to change the stored code description information, by simply changing a code lifting factor (908) that is indicative of codeword length and is used to control the decoding process. When decoding codewords shorter than the maximum supported codeword length some block storage locations may go unused (916).

    METHODS AND APPARATUS FOR VPN SUPPORT IN MOBILITY MANAGEMENT
    8.
    发明公开
    METHODS AND APPARATUS FOR VPN SUPPORT IN MOBILITY MANAGEMENT 审中-公开
    方法和设备的VPN支持移动性管理

    公开(公告)号:EP1784989A2

    公开(公告)日:2007-05-16

    申请号:EP05785441.6

    申请日:2005-08-11

    发明人: O'NEILL, Alan

    IPC分类号: H04Q7/00

    CPC分类号: H04W8/12 H04W8/26 H04W80/04

    摘要: MIP forwarding methods are described that use additional access link-layer identifiers and redirecting data packet identifiers to provide unambiguous forwarding through the MIP Foreign Agent when the Mobile Node has multiple Home Addresses, and/or when the Home Agent, or some intermediate MIP node between the Foreign Agent and the Home Agent, supports multiple pools of home addresses from overlapping address spaces. New identifiers are used to ensure that sufficient forwarding information exists in conjunction with the information in transmitted packets, to uniquely identify each packet flow. Each packet flow is a globally unique quartet of the MN identity, the HA, the HA address pool and the HoA.

    EFFICIENT PAGING IN A WIRELESS COMMUNICATION SYSTEM
    9.
    发明公开
    EFFICIENT PAGING IN A WIRELESS COMMUNICATION SYSTEM 有权
    EINIZIENTES PAGING IN EINEM DRAHTLOSEN KOMMUNIKATIONSSYSTEM

    公开(公告)号:EP1754387A2

    公开(公告)日:2007-02-21

    申请号:EP05758002.9

    申请日:2005-06-09

    IPC分类号: H04Q7/20

    CPC分类号: H04W68/025 Y02D70/00

    摘要: Methods and apparatus for efficient two-stage paging wireless communications systems are described. Wireless terminals are assigned to paging groups. A few first paging message information bits are modulated (using non-coherent modulation) into a first paging signal and communicated from a base station to wireless terminals. WTs wake-up, receive the first paging signal and quickly ascertain whether its paging group should expect a second paging signal, if so, the WT is operated to receive the second paging signal; otherwise, the WT goes back to sleep conserving power. The base station modulates (using coherent modulation) a number of second message information bits into a second paging signal and transmits the signal to WTs. From the information in first and second paging signals, a WT can determine that it is the paged WT and process the paging instructions. The intended paged WT can transmit an acknowledgement signal on a dedicated uplink resource.

    摘要翻译: 描述了用于有效的两阶段寻呼无线通信系统的方法和装置。 无线终端被分配给寻呼组。 几个第一寻呼消息信息比特被调制(使用非相干调制)到第一寻呼信号中并从基站传送到无线终端。 WT唤醒,接收第一寻呼信号,并快速确定其寻呼组是否应该预期第二寻呼信号,如果是,则操作WT接收第二寻呼信号; 否则,WT回去睡觉节电。 基站将多个第二消息信息比特(使用相干调制)调制成第二寻呼信号,并将该信号发送给WT。 从第一和第二寻呼信号中的信息,WT可以确定它是寻呼WT并处理寻呼指令。 预期的寻呼WT可以在专用上行链路资源上发送确认信号。