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    • 21. 发明申请
    • TRANSMISSIONS TO MULTIPLE STATIONS IN WIRELESS COMMUNICATION SYSTEMS
    • 传输到无线通信系统中的多个站点
    • US20080112351A1
    • 2008-05-15
    • US11939379
    • 2007-11-13
    • Shravan K. SurineniSanjiv Nanda
    • Shravan K. SurineniSanjiv Nanda
    • H04H20/71H04J15/00
    • H04W74/0816
    • Systems and methodologies are described that facilitate coordinating and conducting transmissions to multiple stations in a wireless communication system during a single transmission opportunity. A holder of a transmission opportunity can communicate a request-to-send message or a self-addressed clear-to-send message to one or more stations to establish the transmission opportunity. Subsequently, data transmissions with respective stations can be initiated by transmitting request-to-send messages to the respective stations. At each receiving station, the source address of a received request-to-send message is compared to the address of the holder of the transmission opportunity. If the addresses match for a given request-to-send message, the receiving station transmits a clear-to-send message to the holder of the transmission opportunity in response to the request-to-send message.
    • 描述了在单个传输机会期间促进协调和执行无线通信系统中的多个站的传输的系统和方法。 发送机会的持有者可以将请求发送消息或自寻址清除发送消息传送到一个或多个站以建立传输机会。 随后,可以通过向相应站发送请求发送消息来启动与各个站的数据传输。 在每个接收站处,将接收的请求发送消息的源地址与发送机会的持有者的地址进行比较。 如果地址匹配给定的请求发送消息,则接收站响应于请求发送消息向发送机会的持有者发送清除发送消息。
    • 30. 发明授权
    • Method and device for MAC layer feedback in a packet communication system
    • 分组通信系统中MAC层反馈的方法和设备
    • US06975611B1
    • 2005-12-13
    • US09517907
    • 2000-03-03
    • Krishna BalachandranSubrahmanyam DravidaRichard P. EjzakSanjiv NandaShiv M. SethStanley Vitebsky
    • Krishna BalachandranSubrahmanyam DravidaRichard P. EjzakSanjiv NandaShiv M. SethStanley Vitebsky
    • H04B7/212H04B7/26
    • H04B7/2612
    • A method and communication device for media access control feedback over a packet channel divided in channel time slots is provided. The channel time slots are divided into sub-channel time slots. A packet channel feedback field associated with each sub-channel time slot is defined. Acknowledgments are indicated using the packet channel feedback field. An active mobile identity associated with an active mobile station may be assigned which would then be included in the packet channel feedback field. A plurality of active mobile identities may be assigned and some of the active mobile identities may be reserved for special functions. The assigned active mobile identity is used, among other things, to identify an active mobile station to receive packet data signals. The active mobility identity is invalidated after one transaction of packet data signals or invalidated after a short number of such transactions. One or more of the assigned active mobile identities may be used to indicate a time slot assignment for the active mobile station. A sub-channel feedback field in the packet channel feedback field is used to indicate acknowledgments. A sub-channel assignment field in the packet channel feedback field is used to indicate time slot assignments. The sub-channel assignment field is substantially independent of the sub-channel feedback field.
    • 提供了一种用于通过以信道时隙划分的分组信道的媒体访问控制反馈的方法和通信设备。 信道时隙被划分为子信道时隙。 定义与每个子信道时隙相关联的分组信道反馈字段。 使用分组信道反馈字段指示致谢。 可以分配与活动移动台相关联的活动移动身份,然后将其包括在分组信道反馈字段中。 可以分配多个活动移动身份,并且可以为特定功能保留一些活动移动身份。 除了别的以外,使用所分配的活动移动身份以识别用于接收分组数据信号的活动移动台。 主动移动身份在分组数据信号的一次交易之后无效,或者在短时间的这种交易之后无效。 分配的活动移动身份中的一个或多个可以用于指示活动移动台的时隙分配。 分组信道反馈字段中的子信道反馈字段用于指示确认。 分组信道反馈字段中的子信道分配字段用于指示时隙分配。 子信道分配字段基本上独立于子信道反馈字段。