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    • 13. 发明授权
    • Providing extended range modes as part of the 802.11n standard
    • 提供扩展范围模式作为802.11n标准的一部分
    • US07974225B2
    • 2011-07-05
    • US11755006
    • 2007-05-30
    • Assaf Kasher
    • Assaf Kasher
    • H04B7/00
    • H04L27/0008H04L1/0003H04L1/0059H04L1/0618H04L5/0053H04L5/1446H04L27/0012
    • An extended range preamble is disclosed, for transmission between extended range 802.11n devices. The extended range preamble consists of a high-throughput signal field, in which a modulation coding scheme rate and payload length are specified by the transmitting device. The extended range preamble also includes an expanded preamble, which is adjacent to the high-throughput signal field, and is not understood by non-extended range devices. The modulation coding scheme rate is specified as either one of the rates supported in non-extended range 802.11 devices or as a reserved modulation coding scheme not understood by the non-extended range devices. In either circumstance, the non-extended range device respects the preamble, and thus does not itself attempt a transmission during processing of the preamble.
    • 公开了扩展范围前导码,用于扩展范围802.11n设备之间的传输。 扩展范围前导码包括高吞吐量信号字段,其中调制编码方案速率和有效载荷长度由发送装置指定。 扩展范围前导码还包括与高吞吐量信号字段相邻的扩展前导码,并且不被非扩展范围设备理解。 调制编码方案速率被指定为在非扩展范围802.11设备中支持的速率之一或作为非扩展范围设备不理解的保留调制编码方案。 在任一情况下,非扩展范围设备都涉及前同步码,因此在前同步码处理期间本身本身不尝试传输。