Patent ID: 7653119

Claim:
An apparatus comprising: at least one storage device to store code to transmit a first protection signal using orthogonal frequency division multiplexing, the first protection signal corresponding to a clear-to-send packet having a source address and a destination address corresponding to the apparatus, then transmit a second protection signal having direct spread modulation prior to transmission of a first data frame from a direct spread-compatible wireless device, wherein the apparatus is an access point, and thereafter wirelessly transmit the first data frame at a 5 Gigahertz band using non-orthogonal frequency division multiplexing, wherein the first protection signal may be received by wireless stations only capable of orthogonal frequency division multiplexing communication, and the data is only received by wireless stations capable of non-orthogonal frequency division multiplexing communication, the second protection signal to enable direct spread transmission of the first data frame from the direct spread-compatible wireless device, wherein the first protection signal is to prevent transmission from the orthogonal frequency division multiplexing-capable wireless stations during the wireless data transmission.