Huawei Technologies Co., Limited

Wanjun Shang

Xiaodong Chen

Qingchun Shen

Lei Yuan

Wenge Zhang

Caixia Miao

Xiangyu Yang

The invention discloses a method for establishing a session between a caller and a callee, applying to a next generation network, after said callee picking up, which includes: restarting a session negotiation with said callee via a first application server corresponding to the callee, upon obtaining a session description protocol of said callee, sending an update request message containing a session description protocol of said callee to a second application server corresponding to the caller; renegotiating, by the second application server, session with a caller according to said session description protocol of said callee; after the caller completing session update, returning a response message containing a session description protocol of said caller to said callee. The method can realize the multi-service nesting triggering or the forwarding triggering of several flows in one service, and can guarantee the proper connection between the caller and the callee.

Growing community of inventors

Guangdong, China

Wanjun Shang