PHY LOW BANDWIDTH PHY TRANSMISSION IN A WIDER BANDWIDTH

摘要

A method for generating signals to be transmitted within a BSS channel, in which a set of component channels is collectively equivalent to a BSS channel, indicates that a first copy of the low bandwidth mode data unit, at frequency, will be located at the edge of the BSS channel. Determining. Each copy contains OFDM tones and has a bandwidth less than the narrowest channel of the component channels. OFDM tones in each copy include one or more data tones, one or more pilot tones, and one or more guard tones. The method also responsively determines that the first copy will be located at the edge of the BSS channel, at least in part, by scaling down at least one data tone and / or zeroing out at least one data tone. Generating a transmission signal comprising copies of the.