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    ENHANCED UPLINK OPERATION IN SOFT HANDOVER
    3.
    发明专利
    ENHANCED UPLINK OPERATION IN SOFT HANDOVER 未知

    公开(公告)号：GEP20105037B

    公开(公告)日：2010-07-12

    申请号：GEAP2004009309

    申请日：2004-08-25

    Applicant: INTERDIGITAL TECH CORP

    Inventor： ZHANG GUODONG ,  SHIN SUNG-HYUK ,  MILLER JAMES M ,  TERRY STEVEN E ,  DICK STEPHEN G

    IPC: H04W36/18 ,  G01R31/08 ,  H04J3/24 ,  H04L1/16 ,  H04L1/18 ,  H04L12/26 ,  H04W28/04

    Abstract: A method and system for an enhanced uplink (EU) operation in a wireless communication system during soft handover. The system comprises a wireless transmit/receive unit (WTRU), at least two Node-Bs, and a radio network controller (RNC). One Node-B may be designated as a primary Node-B, and the primary Node-B may control EU operation during soft handover including uplink scheduling and hybrid automatic repeat request (H-ARQ). Soft buffer corruption is avoided during soft handover by controlling H-ARQ by the primary Node-B. Alternatively, an RNC may control EU operation during soft handover including H-ARQ. In this case, an RNC generates final acknowledge/non-acknowledge (ACK/NACK) decision based on the error check results of the Node-Bs.

    System for efficient recovery of node-B buffered data following MAC layer reset
    7.
    发明专利
    System for efficient recovery of node-B buffered data following MAC layer reset 未知

    公开(公告)号：AU2007203286B2

    公开(公告)日：2009-10-08

    申请号：AU2007203286

    申请日：2007-07-17

    Applicant: INTERDIGITAL TECH CORP

    Inventor： CHAO YI-JU ,  TERRY STEVEN E

    IPC: H04L12/28 ,  H04L12/56 ,  H04W36/02 ,  H04W88/12

    Abstract: A method and system for the UE and RNC to reduce transmission latency and potentially prevent loss of PDUs upon a MAC layer reset. UE generation of the status PDU is coupled with the MAC layer reset. The RNC generates a 5 message with a MAC reset indication. Following the MAC layer reset all PDUs stored in the UE MAC layer reordering buffers are flushed to RLC entities and then processed by RLC entities prior to the generation of a PDU status report. The PDU status report provides to the RNC the status of all successfully received PDUs. Upon reception of a PDU status report in the RNC missing PDUs are 10 realized and retransmitted to the UE. 12 RECOGNIZE THE NEED TO RESET MAC LAYER INFORM NODE B OF SERVING 14~ HS-DSCH CELL CHANGE 18 _ -- ___I_ UE RRC RECEIVES AND CHECKS RRC MESSAGE INFORM UE OF MAC LAYER WHETHER A MAC LAYER MAC LAYER RESET RESET INDICATOR IS SET RESET INDICATOR , 16 UERRC INFORMS THE MAC 20 LAYER TO RESET MAC LAYER RESETS AND 22 FLUSHES REORDERING BUFFERS RLC INSTANCES PROCESS -24 FLUSHED DATA 28 RLC GENERATES AND SENDS PDU STATUS PDU STATUS REPORT STATUS REPORT OF PDUs PROCESSED 26 MISSING PDUS TRANSMITTED 30 TO THE UE

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