Patent ID: 8155140
Filing Date: 2012-04-10
Classification: H04W

Abstract:
1. A method for communicating over a wireless communication medium, comprising: receiving a first signal from the wireless communication medium; performing a correlation of the first signal and a delayed version of the first signal to produce a correlation result, wherein the delayed version is delayed by a time period corresponding to a packet structure of a wireless communication protocol used by signals transmitted on the wireless communication medium; determining if the correlation result indicates presence of a packetized wireless signal in the first signal, wherein the packetized wireless signal has the packet structure of the wireless communication protocol, wherein presence of the packetized wireless signal indicates that the wireless communication medium is in use by a device capable of communicating over the wireless communication medium; if the correlation result does not indicate presence of the packetized wireless signal in the first signal, performing wireless communication over the wireless communication medium.