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1. (WO2017035697) METHOD FOR ESTABLISHING VOICE BEARER AND ACCESS NETWORK DEVICE

Pub. No.:    WO/2017/035697    International Application No.:    PCT/CN2015/088392
Publication Date: Fri Mar 10 00:59:59 CET 2017 International Filing Date: Sat Aug 29 01:59:59 CEST 2015
IPC: H04W 36/00
H04W 76/02
Applicants: HUAWEI TECHNOLOGIES CO., LTD.
华为技术有限公司
Inventors: ZENG, Meiyan
曾美艳
Title: METHOD FOR ESTABLISHING VOICE BEARER AND ACCESS NETWORK DEVICE
Abstract:
Disclosed are a method for establishing a voice bearer and an access network device, used to establish a voice bearer for a terminal, wherein the terminal camps on a cell provided by a first access network device, and the first access network device is not suitable for establishing a voice bearer, the method comprising: the first access network device receives a bearer establishment request message sent by a core network device, wherein the bearer establishment request message is used for requesting the first access network device to establish a voice bearer; the first access network device sends a bearer establishment response message to the core network device, wherein the bearing establishment response message is used for notifying the core network device that the voice bearer is successfully established; the first access network device hands over the terminal to a target cell and triggers, during the handover, the establishment of a voice bearer in the target cell. The present invention can reduce the voice call delay for a terminal during cell handover.