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    • 83. 发明申请
    • CONTENTION BASED MEDIUM RESERVATION FOR MULTICAST TRANSMISSION IN WIRELESS LOCAL AREA NETWORKS
    • 基于无线局域网网络传输的基于内容的中继预留
    • US20110069628A1
    • 2011-03-24
    • US12736831
    • 2008-06-18
    • Hang LiuIshan MandrekarMinquan WuRamkumar PerumanamSaurabh Mathur
    • Hang LiuIshan MandrekarMinquan WuRamkumar PerumanamSaurabh Mathur
    • H04L12/26H04H20/71
    • H04W74/0816H04W72/005
    • A method and apparatus are described including multicasting a medium reservation message and receiving a response to the medium reservation message. Also described are a method and apparatus including receiving a medium reservation message, determining if a medium is idle and transmitting a response to the medium reservation message responsive to the determination. Further described are a method and apparatus including receiving a medium reservation message, determining if a received network allocation vector in the medium reservation message has a value greater than a current network allocation vector, determining if transmission over a medium during a time interval is detected and resetting the current network allocation vector responsive to the determination of transmission. Yet further described are a method and apparatus including receiving a response to a medium reservation message, determining if a network allocation vector in the response is greater than a current network allocation vector and updating the current network allocation vector responsive to the determination.
    • 描述了一种方法和装置,包括组播媒体预约消息并接收对媒体预留消息的响应。 还描述了一种方法和装置,包括接收介质预留消息,确定介质是否空闲并响应于该确定向媒体预留消息发送响应。 进一步描述了一种方法和装置,包括:接收介质预留消息,确定所述介质预留消息中的接收到的网络分配向量是否具有大于当前网络分配向量的值,确定是否检测到在时间间隔内的介质上的传输; 响应于传输的确定重置当前网络分配向量。 还进一步描述了一种方法和装置,包括接收对介质预留消息的响应,确定响应中的网络分配向量是否大于当前网络分配向量,并响应于确定更新当前网络分配向量。
    • 87. 发明授权
    • Contention based medium reservation for multicast transmission in wireless local area networks
    • 基于竞争的媒体预留在无线局域网中的多播传输
    • US08705383B2
    • 2014-04-22
    • US12736831
    • 2008-06-18
    • Hang LiuIshan MandrekarMingquan WuRamkumar PerumanamSaurabh Mathur
    • Hang LiuIshan MandrekarMingquan WuRamkumar PerumanamSaurabh Mathur
    • G01R31/08
    • H04W74/0816H04W72/005
    • A method and apparatus are described including multicasting a medium reservation message and receiving a response to the medium reservation message. Also described are a method and apparatus including receiving a medium reservation message, determining if a medium is idle and transmitting a response to the medium reservation message responsive to the determination. Further described are a method and apparatus including receiving a medium reservation message, determining if a received network allocation vector in the medium reservation message has a value greater than a current network allocation vector, determining if transmission over a medium during a time interval is detected and resetting the current network allocation vector responsive to the determination of transmission. Yet further described are a method and apparatus including receiving a response to a medium reservation message, determining if a network allocation vector in the response is greater than a current network allocation vector and updating the current network allocation vector responsive to the determination.
    • 描述了一种方法和装置,包括组播媒体预约消息并接收对媒体预留消息的响应。 还描述了一种方法和装置,包括接收介质预留消息,确定介质是否空闲并响应于该确定向媒体预留消息发送响应。 进一步描述了一种方法和装置,包括:接收介质预留消息,确定所述介质预留消息中的接收到的网络分配向量是否具有大于当前网络分配向量的值,确定是否检测到在时间间隔内的介质上的传输; 响应于传输的确定重置当前网络分配向量。 还进一步描述了一种方法和装置,包括接收对介质预留消息的响应,确定响应中的网络分配向量是否大于当前网络分配向量,并响应于确定更新当前网络分配向量。
    • 89. 发明授权
    • Collision mitigation for multicast transmission in wireless local area networks
    • 无线局域网中组播传输的冲突缓解
    • US08553548B2
    • 2013-10-08
    • US12736846
    • 2008-06-23
    • Hang LiuIshan MandrekarMingquan WuRamkumar PerumanamSaurabh Mathur
    • Hang LiuIshan MandrekarMingquan WuRamkumar PerumanamSaurabh Mathur
    • H04L12/26
    • H04W4/06H04L1/1685H04L12/1863H04L12/189H04W72/005H04W74/0816
    • A method and apparatus are described including determining if a communications medium is idle; determining a time interval for a reservation of said communications medium; multicasting a message for reserving said communications medium; receiving responses to said message for reserving said communications medium; and determining if a number of said received responses compared to an expected number of responses exceeds a value; performing one of initiating pending frame exchanges and multicasting data or management frames during said time interval for said reservation of said communications medium if said comparison exceeds said value; repeating said first determining act if said comparison does not exceed said value. Also described are a method and apparatus including receiving a message for a reservation of a communications medium; determining if said message specifies a receiver of the message in a list of receivers from which a response is requested; determining if said communications medium is idle; determining a time period in which to transmit said response responsive to an order in said list, wherein said list of receivers is one of a reply list of receiver addresses and a combination of a bitmap control field and a partial virtual bitmap; and transmitting said response to said message responsive to said second determination.
    • 描述了确定通信介质是否空闲的方法和装置; 确定所述通信介质的预留的时间间隔; 组播用于保留所述通信介质的消息; 接收对所述消息的响应以保留所述通信介质; 以及确定与预期响应数量相比较的所述接收到的响应的数量是否超过一个值; 如果所述比较超过所述值,则执行在所述时间间隔期间启动等待的帧交换和组播数据或管理帧以用于所述通信介质的所述预留; 如果所述比较不超过所述值,则重复所述第一确定动作。 还描述了一种方法和装置,包括接收用于通信介质的预留的消息; 确定所述消息是否在请求响应的接收者的列表中指定消息的接收者; 确定所述通信介质是否空闲; 响应于所述列表中的顺序确定发送所述响应的时间段,其中所述接收机列表是接收机地址的答复列表和位图控制字段和部分虚拟位图的组合之一; 以及响应于所述第二确定,向所述消息发送所述响应。