METHOD AND APPARATUS FOR REDUCING TRANSMISSION ERRORS IN A THIRD GENERATION CELLULAR SYSTEM
    36.
    发明公开
    METHOD AND APPARATUS FOR REDUCING TRANSMISSION ERRORS IN A THIRD GENERATION CELLULAR SYSTEM 有权
    方法和装置以降低发送错误在第三代蜂窝系统

    公开(公告)号:EP1527431A4

    公开(公告)日:2005-09-28

    申请号:EP03750074

    申请日:2003-05-07

    CPC classification number: H04L1/0026 H04L1/1671 H04L1/1812 H04L2001/125

    Abstract: A wireless communication method system for detecting and correcting transmission errors. The system includes at least one Wireless Transmit/Receive Unit (WTRU) in communication with a Node B. At step 405 the Node B sends a transmission signal (including a protocol data unit (PDU)) to the WTRU. The WTRU generates a Revert Message having a first field and a second field to indicate whether the transmission signal was successfully received at the WTRU. The WTRU transmits the Revert Message to the Node B. The Node B receives the first field (step 410) and the second field (step 420) and determines the contents (steps 415 and 425). The Node B compares the contents of the first field to the contents of the second field (step 430). The Node B resends the transmission signal to the WTRU if the contents of the first and second fields are not logically consistent (step 450).

    DYNAMIC CHANNEL QUALITY MEASUREMENT PROCEDURE FOR ADAPTIVE MODULATION AND CODING TECHNIQUES
    39.
    发明公开
    DYNAMIC CHANNEL QUALITY MEASUREMENT PROCEDURE FOR ADAPTIVE MODULATION AND CODING TECHNIQUES 有权
    MESSPROZEDURFÜRDIE DYNAMISCHEKANALQUALITÄTFÜRADAPTIVE MODULATIONS- UND CODIERUNGSTECHNIKEN

    公开(公告)号:EP1391126A4

    公开(公告)日:2004-06-23

    申请号:EP02725658

    申请日:2002-04-15

    Abstract: A wireless digital communication method for communicating between a base station (12) and a plurality of user equipment mobile terminals (UEs 30) and employs adaptive modulation and coding to achieve improved radio resource utilization and provide optimum data rates for user services. Blocks of downlink (DL) data are received by the base station which requests downlink DL channel quality measurements only from those mobile terminals (30) with pending downlink transmissions. The UEs respond to the request by measuring and reporting DL Channel quality to the base station, which then allocates resources such that the UEs will make best use of radio resources. The base station notifies the UEs of the physical channel allocation indicating the modulation/coding rate and allocated slots followed by transmission of blocks of downlink data which are transmitted to the UEs.

    Abstract translation: 一种用于在基站(12)和多个用户设备移动终端(UE30)之间进行通信的无线数字通信方法,并采用自适应调制和编码来实现改进的无线电资源利用并为用户服务提供最佳数据速率。 下行链路(DL)数据块由基站仅从具有待决下行链路传输的那些移动终端(30)请求下行链路DL信道质量测量的基站接收。 UE通过测量并向基站报告DL信道质量来响应该请求,基站然后分配资源,使得UE将充分利用无线电资源。 基站通知UE指示调制/编码率和分配时隙的物理信道分配,随后传输发送给UE的下行链路数据块。

    CELL RESELECTION AND HANDOVER WITH MULTIMEDIA BROADCAST/MULTICAST SERVICE

    公开(公告)号:CA2685687C

    公开(公告)日:2017-10-03

    申请号:CA2685687

    申请日:2008-04-25

    Abstract: A method and apparatus for providing wireless communication services, (e.g., multimedia broadcast multicast services (MBMS)), are disclosed. A wireless transmit/receive unit (WTRU) detects a plurality of target cell evolved Node-Bs (eNodeBs) that neighbor a serving cell eNodeB. The WTRU evaluates cell reselection criteria and determines a neighboring target cell eNodeB to reselect. The WTRU receives and reads master information block (MIB) and system information messages of the neighboring target cell eNodeB, and confirms that the determined neighboring target cell eNodeB is not part of a multimedia broadcast single frequency network (MBSFN). The WTRU identifies the neighboring target cell eNodeB to the serving cell eNodeB. The WTRU then receives and reads MIB messages of the neighboring target cell eNodeB again to determine whether the system information has changed and, if so, the WTRU reads the system information and reselects to the neighboring target cell eNodeB, which provides the wireless communication services.

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