Systems and methods are provided for delivering both PMP communications, for example standard cellular communications via a base station, and also delivering P2P communications, for example, communications between two mobile stations, using the same spectral resources for both types of communication...http://www.google.fr/patents/US7548758?utm_source=gb-gplus-shareBrevet US7548758 - System and method for peer-to-peer communication in cellular systems
System and method for peer-to-peer communication in cellular systems