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    FACILITATING HANDOVER IN A LTE COMMUNICATION SYSTEM
    1.
    发明公开
    FACILITATING HANDOVER IN A LTE COMMUNICATION SYSTEM 审中-公开

    公开(公告)号：EP3349507A1

    公开(公告)日：2018-07-18

    申请号：EP18157176.1

    申请日：2007-06-19

    申请人： InterDigital Technology Corporation

    发明人： WANG, Jin ,  CHANDRA, Arty ,  TERRY, Stephen E.

    IPC分类号： H04W36/00 ,  H04W56/00

    摘要： A method and system for performing handover in a third generation (3G) long term evolution (LTE) system are disclosed. A source evolved Node-B (eNode-B) makes a handover decision based on measurements and sends a handover request to a target eNode-B. The target eNode-B sends a handover response to the source eNode-B indicating that a handover should commence. The source eNode-B then sends a handover command to a wireless transmit/receive unit (WTRU). The handover command includes at least one of reconfiguration information, information regarding timing adjustment, relative timing difference between the source eNode-B and the target eNode-B, information regarding an initial scheduling procedure at the target eNode-B, and measurement information for the target eNode-B. The WTRU then accesses the target eNode-B and exchanges layer 1/2 signaling to perform downlink synchronization, timing adjustment, and uplink and downlink resource assignment based on information included in the handover command.

    METHOD AND APPARATUS FOR PROTECTING HIGH THROUGHPUT STATIONS
    5.
    发明公开
    METHOD AND APPARATUS FOR PROTECTING HIGH THROUGHPUT STATIONS 有权
    方法和装置于保护台站的高里程数

    公开(公告)号：EP1925125A2

    公开(公告)日：2008-05-28

    申请号：EP06814427.8

    申请日：2006-09-11

    申请人： INTERDIGITAL TECHNOLOGY CORPORATION

    发明人： CHANDRA, Arty ,  ZEIRA, Eldad, M. ,  LEVY, Joseph, S. ,  TERRY, Stephen, E. ,  GRANDHI, Sudheer A.

    IPC分类号： H04L12/28 ,  H04L12/56

    CPC分类号： H04L1/0079 ,  H04W16/14 ,  H04W74/08 ,  H04W92/02

    摘要： A method and apparatus for protecting high throughput (HT) stations (STAs) are disclosed. In one embodiment, a physical layer (PHY) legacy preamble transmitted by one STA is decoded by another STA that does not use a legacy preamble. In another embodiment, one STA is identified by another STA by using bits in the preamble of a packet to indicate which PHY type will be used in the remaining portion of the packet. In yet another embodiment, one STA sends ready-to-send (RTS)/clear-to-send (CTS) or CTS-to-self messages for reserving a medium in the presence of another STA of a different type than the one STA. In yet another embodiment, an access point (AP) transmits a beacon or an association message including a capability information element (IE) that indicates operation or support for a legacy preamble, HT STA preambles and a medium access control (MAC) packet transmission with HT protection mechanisms.

    WIRELESS COMMUNICATION METHOD AND SYSTEM WITH CONTROLLED WTRU PEER-TO-PEER COMMUNICATIONS
    7.
    发明公开
    WIRELESS COMMUNICATION METHOD AND SYSTEM WITH CONTROLLED WTRU PEER-TO-PEER COMMUNICATIONS 审中-公开
    与控制型无线WTRU通信方法和系统的点对点通信

    公开(公告)号：EP1550320A2

    公开(公告)日：2005-07-06

    申请号：EP03799362.3

    申请日：2003-09-30

    申请人： INTERDIGITAL TECHNOLOGY CORPORATION

    发明人： REDDY, Gautam, G. ,  CHITRAPU, Prabhakar, R. ,  KAZAKEVICH, Leonid ,  HUNKELER, Teresa ,  CHANDRA, Arty

    IPC分类号： H04Q7/00

    CPC分类号： H04W88/04 ,  G01S5/0027 ,  H04W4/02 ,  H04W64/00 ,  H04W84/00 ,  H04W88/06

    摘要： A wireless network provides controlled wireless communications with multi-mode wireless WTRUs (33, 37). The wireless network has at least one base station (25) having a transceiver operating in an infrastructure communication mode withmulti mode WTRUs and a controller that transmits control signals via infrastructure communications with a WTRU that control peer-to-peer mode communications (40) of that WTRU with other WTRUs. A WTRU has transceiver components configured for selective operation in an infrastructure communication mode with a network base station and in a peer-to-peer communication mode with other WTRUs. The WTRU also has a transceiver controller configured to selectively control peer-to-peer mode communications with other WTRUs based on communication signals received in infrastructure communications with a network base station. Preferably, the transceiver controller is configured to control the transceiver components to switch between infrastructure communication mode and peer-to-peer communication mode based on(duality of Service criteria).

    UE ASSISTED SYSTEM DATABASE UPDATE
    8.
    发明公开
    UE ASSISTED SYSTEM DATABASE UPDATE 审中-公开

    公开(公告)号：EP1540971A1

    公开(公告)日：2005-06-15

    申请号：EP03761976.4

    申请日：2003-06-20

    申请人： INTERDIGITAL TECHNOLOGY CORPORATION

    发明人： CHANDRA, Arty ,  CHITRAPU, Prabhakar, R. ,  MENON, Marayan, Parappil

    IPC分类号： H04Q7/20

    CPC分类号： H04W8/18 ,  H04W40/246 ,  H04W40/248 ,  H04W48/08 ,  H04W84/12 ,  H04W84/18

    摘要： A user equipment (UE 101) operating in a wireless system (103) having at least one base station (102), communicates with base stations (102b, 104b, 105b) in neighboring wireless systems and conveys information regarding these neighboring wireless systems to the base station (102b) of its wireless system (103), which updates and stores this information for use in handover of UEs. The BS may also obtain updates directly from the base stations of neighboring wireless systems which may include a diversity of systems such as WLANS, Bluetooth, UMTS, GPRS, etc., and provide to UEs a list of those wireless systems which the UEs need not provide updates to the BS providing the list.

    摘要翻译： 在具有至少一个基站（102）的无线系统（103）中操作的用户设备（UE 101）与相邻无线系统中的基站（102b，104b，105b）通信并且将关于这些相邻无线系统的信息传送给 其无线系统（103）的基站（102b），其更新并存储该信息以用于UE的切换。 BS还可以直接从可以包括诸如WLANS，蓝牙，UMTS，GPRS等的多种系统的相邻无线系统的基站获得更新，并向UE提供UE不需要的那些无线系统的列表 向提供该列表的BS提供更新。

    DYNAMIC RESOURCE ALLOCATION, SCHEDULING AND SIGNALING FOR VARIABLE DATA RATE SERVICE IN LTE
    10.
    发明公开
    DYNAMIC RESOURCE ALLOCATION, SCHEDULING AND SIGNALING FOR VARIABLE DATA RATE SERVICE IN LTE 审中-公开

    公开(公告)号：EP3565360A1

    公开(公告)日：2019-11-06

    申请号：EP19182116.4

    申请日：2007-08-20

    申请人： InterDigital Technology Corporation

    发明人： WANG, Jin ,  SAMMOUR, Mohammed ,  CHANDRA, Arty

    IPC分类号： H04W72/12 ,  H04L5/00 ,  H04L1/18

    摘要： A method and apparatus are provided for dynamic resource allocation, scheduling and signaling for variable data real time services (RTS) in long term evolution (LTE) systems. Preferably, changes in data rate for uplink RTS traffic are reported to an evolved Node B (eNB) by a UE using layer 1, 2 or 3 signaling. The eNB dynamically allocates physical resources in response to a change in data rate by adding or removing radio blocks currently assigned to the data flow, and the eNB signals the new resource assignment to the UE. In an alternate embodiment, tables stored at the eNB and the UE describe mappings of RTS data rates to physical resources under certain channel conditions, such that the UE uses the table to locally assign physical resources according to changes in UL data rates. Additionally, a method and apparatus for high level configuration of RTS data flows is also presented.