Wireless gateway nodes are enabled to support mobile node services, such as content based billing, when a data treatment server is present in the system. Using one of a defined Content Flow Label (CFL), an Application Program Interface (API), and a compression protocol header, content based billing is...http://www.google.com.au/patents/US7742490?utm_source=gb-gplus-sharePatent US7742490 - Enhanced encapsulation mechanism using GRE protocol
