Communication method, device, and system

Patent metadata

Field	Value
Publication number	US-2016234744-A1
Application number	US-201615099086-A
Country	US
Kind code	A1
Filing date	Apr 14, 2016
Priority date	Oct 25, 2013
Publication date	Aug 11, 2016
Grant date	—

Abstract

A communication method includes: sending, by an MME, a bearer setup request message to an eNodeB, where the bearer setup request message is used to instruct the eNodeB to set up a voice bearer for user equipment; and when the MME receives a bearer setup failure message sent by the eNodeB in response to the bearer setup request message, sending, by the MME, an indication message to the user equipment, where the indication message is used to indicate that a voice over VoIMS of the user equipment is unavailable. When setup of a voice bearer of a VoLTE call fails, the user equipment is notified that a VoLTE is unavailable, so that the user equipment can be prevented from continuing attempting to initiate the VoLTE call and exacerbating cell congestion.

First claim

What is claimed is:

1 . A communication method, comprising:
sending, by a mobility management entity (MME), a bearer setup request message to an evolved NodeB (eNodeB), wherein the bearer setup request message is used to instruct the eNodeB to set up a voice bearer for user equipment; and when the MME receives a bearer setup failure message sent by the eNodeB in response to the bearer setup request message, sending, by the MME, an indication message to the user equipment, wherein the indication message is used to indicate that a voice over Internet Protocol IP multimedia subsystem (VoIMS) of the user equipment is unavailable.

2 . The method according to claim 1 , wherein before the sending, by the MME, an indication message to the user equipment, the method further comprises:
sending, by the MME, a notification message to the user equipment, wherein the notification message is used to trigger the user equipment to initiate registration or combined registration; and receiving, by the MME, a first registration request message or a first combined registration request message that is sent by the user equipment; and the sending, by the MME, an indication message to the user equipment, wherein the indication message is used to indicate that a VoIMS of the user equipment is unavailable comprises: sending, by the MME, a first registration acceptance message or a first combined registration acceptance message to the user equipment, wherein the first registration acceptance message or the first combined registration acceptance message comprises first indication information, and the first indication information is used to indicate that the VoIMS of the user equipment is unavailable.

3 . The method according to claim 2 , wherein:
the notification message is a detach request message; or the notification message is a globally unique temporary identity (GUTI) reallocation message, wherein the GUTI reallocation message comprises an invalid tracking area identity (TAI) list.

4 . The method according to claim 3 , wherein:
the detach request message comprises international mobile subscriber identity (IMSI) detach indication information.

5 . The method according to claim 2 , wherein:
the first registration request message is an attach message, and the first registration acceptance message is an attach acceptance message; or the first combined registration request message is a combined attach message, and the first combined registration acceptance message is a combined attach acceptance message; or, the first registration request message is a tracking area update message, and the first registration acceptance message is a tracking area update acceptance message; or, the first combined registration request message is a combined tracking area update message, and the first combined registration acceptance message is a combined tracking area update acceptance message.

6 . The method according to claim 1 , wherein the method further comprises:
sending, by the MME, a first location update request message to a home subscriber server (HSS) according to the bearer setup failure message, wherein the first location update request message is used to notify the HSS that the VoIMS of the user equipment is unavailable.

7 . The method according to claim 1 , wherein after the sending, by the MME, an indication message to the user equipment, the method further comprises:
receiving, by the MME, a second registration request message or a second combined registration request message that is sent by the user equipment; and sending, by the MME, a second registration acceptance message or a second combined registration acceptance message to the user equipment, wherein the second registration acceptance message or the second combined registration acceptance message comprises second indication information, and the second indication information is used to indicate that the VoIMS of the user equipment is available.

8 . The method according to claim 7 , wherein after the sending, by the MME, a second registration acceptance message or a second combined registration acceptance message to the user equipment, the method further comprises:
sending, by the MME, a second location update request message to a home subscriber server HSS, wherein the second location update request message is used to notify the HSS that the voice over Internet Protocol IP multimedia subsystem IMS VoIMS of the user equipment is available.

9 . The method according to claim 6 , wherein after the sending, by the MME, an indication message to the user equipment, the method further comprises:
receiving, by the MME, a second registration request message or a second combined registration request message that is sent by the user equipment; and sending, by the MME, a second registration acceptance message or a second combined registration acceptance message to the user equipment, wherein the second registration acceptance message or the second combined registration acceptance message comprises second indication information, and the second indication information is used to indicate that the VoIMS of the user equipment is available.

10 . The method according to claim 9 , wherein after the sending, by the MME, a second registration acceptance message or a second combined registration acceptance message to the user equipment, the method further comprises:
sending, by the MME, a second location update request message to the HSS, wherein the second location update request message is used to notify the HSS that the VoIMS of the user equipment is available.

11 . The method according to claim 1 , wherein that the bearer setup request message is used to instruct the eNodeB to set up a voice bearer for user equipment comprises:
the bearer setup request message is used to instruct the eNodeB to set up a bearer whose quality of service class identifier (QCI) is equal to 1 for the user equipment.

12 . A mobility management entity, comprising:
a transmitter, configured to send a bearer setup request message to an evolved NodeB (eNodeB), wherein the bearer setup request message is used to instruct the eNodeB to set up a voice bearer for user equipment; and a receiver, configured to receive a bearer setup failure message sent by the eNodeB in response to the bearer setup request message; wherein the transmitter is further configured to send an indication message to the user equipment, wherein the indication message is used to indicate that a voice over Internet Protocol IP multimedia subsystem (VoIMS) of the user equipment is unavailable.

13 . The mobility management entity according to claim 12 , wherein:
the transmitter is further configured to send a notification message to the user equipment before the mobility management entity sends the indication message to the user equipment, wherein the notification message is used to trigger the user equipment to initiate registration or combined registration; the receiver is further configured to receive a first registration request message or a first combined registration request message that is sent by the user equipment; and the transmitter is configured to send a first registration acceptance message or a first combined registration acceptance message to the user equipment, wherein the first registration acceptance message or the first combined registration acceptance message comprises first indication information, and the first indication information is used to indicate that the VoIMS of the user equipment is unavailable.

14 . The mobility management entity according to claim 12 , wherein:
the transmitter is further con

Assignees

• Huawei Tech Co Ltd

Inventors

• Wu Xiaobo
• Wang Guangwei
• Xi Guobao
• Sun Chao
• Wang Xinyong

Classifications

• H04L65/1016

  IP multimedia subsystem [IMS] · CPC title

• H04W36/22 Primary

  for handling the traffic · CPC title

• H04W76/18 Primary

  Management of setup rejection or failure · CPC title

• H04L65/1069 Primary

  Session establishment or de-establishment · CPC title

• H04W60/04

  using triggered events · CPC title