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    • 5. 发明申请
    • RANGE EXTENSION MODE FOR WIFI
    • WIFI范围扩展模式
    • WO2015061729A1
    • 2015-04-30
    • PCT/US2014/062247
    • 2014-10-24
    • MARVELL WORLD TRADE LTD.ZHANG, HongyuanLOU, Hui-LingYONG, Su, Khiong
    • ZHANG, HongyuanLOU, Hui-LingYONG, Su, Khiong
    • H04L27/26
    • H04L27/2605H04J11/00H04L1/0057H04L27/2613H04L27/2698H04W52/286H04W84/12
    • A method for generating a physical layer (PHY) data unit for transmission via a communication channel is described where the PHY data unit conforms to a first communication protocol. Orthogonal frequency division multiplexing (OFDM) symbols for a data field of the PHY data unit are generated according to a range extension coding scheme that corresponds to a range extension mode of the first communication protocol. A preamble of the PHY data unit is generated, the preamble having i) a first portion that indicates a duration of the PHY data unit and ii) a second portion that indicates whether at least some OFDM symbols of the data field are generated according to the range extension coding scheme. The first portion of the preamble is formatted such that the first portion of the preamble is decodable by a receiver device that conforms to a second communication protocol, but does not conform to the first communication protocol, to determine the duration of the PHY data unit based on the first portion of the preamble. The PHY data unit is generated to include the preamble and the data field.
    • 描述了通过通信信道生成用于传输的物理层(PHY)数据单元的方法,其中PHY数据单元符合第一通信协议。 根据与第一通信协议的范围扩展模式对应的范围扩展编码方案,生成用于PHY数据单元的数据字段的正交频分复用(OFDM)符号。 生成PHY数据单元的前同步码,前导码具有i)指示PHY数据单元的持续时间的第一部分,以及ii)指示是否根据该数据字段生成数据字段的至少一些OFDM符号的第二部分 范围扩展编码方案。 前导码的第一部分被格式化为使得前导码的第一部分可以由符合第二通信协议但不符合第一通信协议的接收机设备解码,以便基于PHY数据单元的持续时间来确定 在序言的第一部分。 生成PHY数据单元以包括前导码和数据字段。