US Patent No. 9,301,229

METHOD AND SYSTEM FOR TERMINAL HANDOVER IN WIRELESS COMMUNICATION SYSTEM


Patent No. 9,301,229
Issue Date March 29, 2016
Title Method And System For Terminal Handover In Wireless Communication System
Inventorship Na Zhou, Shenzhen (CN)
Qiang Wu, Shenzhen (CN)
Tao Fu, Shenzhen (CN)
Assignee ZTE Corporation, Shenzhen, Guangdong (CN)

Claim of US Patent No. 9,301,229

1. A method for terminal handover in a wireless communication system in which a packet data network gateway and/or a mobility
management entity is connected to an Identity Location Register (ILR) through a signaling interface, a terminal accessing
a packet data network through a packet data network gateway, and when the terminal moves between two packet data network gateways,
the method comprising:
a target packet data network gateway to which the terminal moves allocating a new Routing Identifier (RID) to the terminal,
and storing a mapping relationship between an Access Identifier (AID) and the new RID of the terminal; the target packet data
network gateway or a target mobility management entity of the terminal initiating a registration update request including
the new RID of the terminal to a home ILR of the terminal;

after receiving the registration update request, the home ILR of the terminal updating stored AID-RID mapping information
of the terminal according to the new RID of the terminal, and initiating a notification of updating the RID of the terminal
to packet data network gateway of an opposite communication end and/or mobility management entity of an opposite communication
end of the terminal according to end information of the opposite communication end of the terminal which is received and/or
stored locally.