Overlapped wireless LAN cells in a medium have an equal chance at establishing a session on the medium. A first member station in the first cell transmits a timing packet containing a timestamp value, which is received at a second member station in the second cell. This synchronizes member stations in...http://www.google.es/patents/US7280517?utm_source=gb-gplus-sharePatente US7280517 - Wireless LANs and neighborhood capture
