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    • 5. 发明授权
    • Method and apparatus for transmit power control in wireless networks
    • 无线网络中发射功率控制的方法和装置
    • US09215666B2
    • 2015-12-15
    • US13061663
    • 2008-09-03
    • Hang LiuIshan MandrekarMingquan WuRamkumar PerumanamSaurabh Mathur
    • Hang LiuIshan MandrekarMingquan WuRamkumar PerumanamSaurabh Mathur
    • H04W52/08H04W52/20H04W52/24
    • H04W52/20H04W52/08H04W52/245
    • A method and apparatus are described including receiving, by a transmitter, a report from an associated client, setting and using a downlink transmit power level responsive to the report for data transmissions to the associated client, determining a downlink data loss rate and adjusting the downlink transmit power level responsive to the downlink data loss rate, wherein said report includes received signal strength, client transmit power level and one of link margin and receiver sensitivity. Also described are a method and apparatus including receiving, by a receiver, a request for a report, transmitting the requested report, receiving an instruction to use an uplink transmit power level, setting and using the uplink transmit power level, determining an uplink data loss rate and adjusting the uplink transmit power level responsive to the uplink data loss rate, wherein said report includes said received signal strength, client transmit power level and one of said link margin and said receiver sensitivity.
    • 描述了一种方法和装置,包括由发射机从相关联的客户端接收报告,响应于所述报告来设置和使用下行链路发射功率电平,以便向相关联的客户端发送数据,确定下行链路数据丢失率并调整下行链路 响应于下行链路数据丢失率发送功率电平,其中所述报告包括接收信号强度,客户端发射功率电平以及链路余量和接收机灵敏度之一。 还描述了一种方法和装置,包括由接收机接收对报告的请求,发送所请求的报告,接收使用上行链路发射功率电平的指令,设置和使用上行链路发射功率电平,确定上行链路数据丢失 响应于上行链路数据丢失率来速率和调整上行链路发射功率电平,其中所述报告包括所述接收信号强度,客户端发射功率电平以及所述链路余量和所述接收机灵敏度之一。
    • 8. 发明授权
    • Apparatus for multicast transmissions in wireless local area networks
    • 无线局域网中组播传输的装置
    • US08737281B2
    • 2014-05-27
    • US12737173
    • 2008-06-27
    • Hang LiuIshan MandrekarMinquan WuRamkumar PerumanamSaurabh Mathur
    • Hang LiuIshan MandrekarMinquan WuRamkumar PerumanamSaurabh Mathur
    • H04H20/71H04L12/28H04J3/26H04L12/43H04L12/66
    • H04W72/005H04W74/004H04W74/006H04W84/12
    • Message formats and apparatus are described that serve to reserve access to a communication medium in a multi-cast system. A first message, a multicast request-to-send message, includes a duration field having information representing the reserved time for a communication medium, a multicast receiver address field, a multicast transmitter address field, a field that identifies the number of slots for a clear-to-send response, and a field that identifies the number slots for a not-clear-to-send response. A second message includes a duration field, and a multicast receive address field. The second message has a format that can be used as one of a clear-to-send message in response to a multicast request-to-send message, a cancel-clear-to-send message that cancels a data transmission after the clear-to-send message is sent, and a not-clear-to-send message in response to the multicast request-to-send message.
    • 描述了用于预留对多播系统中的通信介质的访问的消息格式和装置。 第一消息,组播请求发送消息包括具有表示通信介质的保留时间的信息的持续时间字段,多播接收器地址字段,多播发送器地址字段,标识一个 清除发送响应,以及标识不清楚发送响应的号码位的字段。 第二消息包括持续时间字段和多播接收地址字段。 第二消息具有可以用作响应于多播请求发送消息的清除发送消息之一的格式,在清除发送消息之后取消数据传输的取消清除发送消息, 发送消息,以及响应于多播请求发送消息的不清除发送消息。