Disclosed herein are a method, apparatus and computer program product to correlate service instance for a mobile station (MS), radio access network (RAN) and a packet data serving node (PDSN) connection by exchanging identifiers between the entities involved in the connections. Also disclosed herein...http://www.google.com.hk/patents/US7558283?utm_source=gb-gplus-share專利 US7558283 - Method, apparatus and computer program product providing quality of service support in a wireless communications system
