A wireless local area network is provided with simplified RF ports which are configured to provide lower level media access control functions. Higher level media access control functions are provided in a cell controller, which may service one or more RF ports that are capable operating with at least...http://www.google.com.tw/patents/US20010055283?utm_source=gb-gplus-share專利 US20010055283 - Multiple wireless local area networks occupying overlapping physical spaces
