A hierarchical communication system is described in which wireless local area networks (LANs) exhibiting substantially different characteristics are employed in an overall scheme to link portable or mobile computing devices. In a premises LAN, a series of radio base stations and a backbone LAN make up...http://www.google.es/patents/US5949776?utm_source=gb-gplus-sharePatente US5949776 - Hierarchical communication system using premises, peripheral and vehicular local area networking
Hierarchical communication system using premises, peripheral and vehicular ...
