Patent ID: 8285861
Filing Date: 2012-10-09
Classification: H04L,H04M

Abstract:
1. A method for creating an Internet Protocol Connectivity Access Network (IP-CAN) session, comprising: creating, by a first Policy and Charging Enforcement Function (PCEF) entity, a first session with a Policy and Charging Rules Function (PCRF) entity; performing, by the first PCEF entity, a mobility registration with a second PCEF entity; creating, by the second PCEF entity, a second session with the PCRF entity; and after creating the second session with the PCRF, sending, by the PCRF entity, session information of the second session to the second PCEF entity; wherein performing, by the first PCEF entity, a mobility registration with the second PCEF entity and creating, by the second PCEF entity, the second session with the PCRF entity comprises: sending, by the first PCEF entity, a mobility registration request or a bearer creation request that carries an Access Point Name (APN) and a user ID to the second PCEF entity; allocating, by the second PCEF entity, an IP address to the user; sending, by the second PCEF entity, a mobility registration response or a bearer creation response that carries the allocated IP address to the first PCEF entity; sending, by the second PCEF entity, a Policy and Charging Control (PCC) decision request that carries the APN, the user ID, and the allocated IP address to the PCRF entity; and formulating, by the PCRF entity, a PCC rule according to the APN, the user ID, the allocated IP address, IP-CAN bearer information, and a stored user subscription profile.