Method for internet protocol based multimedia subsystem registration and device, communication device, and storage medium

Patent metadata

Field	Value
Publication number	US-11038931-B2
Application number	US-202016742419-A
Country	US
Kind code	B2
Filing date	Jan 14, 2020
Priority date	Sep 24, 2019
Publication date	Jun 15, 2021
Grant date	Jun 15, 2021

Abstract

The disclosure relates to a method for Internet Protocol based Multimedia Subsystem (IMS) registration and device, a communication device, and a storage medium. The method for IMS registration includes determining whether a network side supports an IMS service; acquiring, based on an IMS Access Point Name (APN), an address for the IMS registration when the network side supports the IMS service; performing the IMS registration based on the acquired address for the IMS registration; and initiating an IMS re-registration when the IMS registration fails.

First claim

What is claimed is:

1. A method for Internet Protocol Multimedia Subsystem (IMS) registration, the method being applied to a terminal, and the method comprising:
determining whether a network side supports an IMS service;
acquiring, based on an IMS Access Point Name (APN), an address for the IMS registration when the network side supports the IMS service;
performing the IMS registration based on the acquired address for the IMS registration;
initiating an IMS re-registration when the IMS registration fails by initiating the IMS re-registration when a number of times that the IMS registration is performed does not reach a first preset threshold;
re-acquiring an address for an IMS registration when the number of times that the IMS registration is performed reaches the first preset threshold by:
determining whether a number of times that acquisition for the address the IMS registration is performed reaches a second preset threshold, wherein the second preset threshold is two or more; and
re-acquiring the address for the IMS registration when the number of times that the acquisition is performed does not reach the second preset threshold:

initiating the IMS registration based on the re-acquired address for the IMS registration;
controlling the terminal to enter a flight mode when the number of times that the acquisition is performed reaches the second preset threshold;
controlling the terminal to exit the flight mode after the terminal enters the flight mode for a predetermined duration;
performing network attach after the terminal exits the flight mode; and
determining whether the network side supports the IMS service after the terminal is attached to a network.

2. The method of claim 1 , further comprising:
receiving a reason for a failure of the IMS registration; and
determining the first preset threshold based on the reason.

3. The method of claim 2 , wherein determining the first preset threshold based on the reason comprises:
determining that the first preset threshold has a first value when the reason for the failure of the IMS registration is that a registration request of the IMS registration is lost; and
determining that the first preset threshold has a second value when the reason for the failure of the IMS registration is that an IMS server refuses to register, wherein the second value is less than the first value.

4. The method of claim 1 , further comprising:
sending an attach request to the network side;
receiving an attach acceptance from the network side based on the attach request; and
determining whether the network side supports the IMS service based on an IMS service support indication field carried in the attach request.

5. The method of claim 1 , wherein acquiring, based on the IMS APN, the address for the IMS registration when the network side supports the IMS service comprises:
sending a Public Data Network (PDN) connection request to the network side when the network side supports the IMS service; and
receiving a connection response from the network side based on the PDN connection request, wherein the connection response carries an address for the IMS registration.

6. A device for Internet Protocol Multimedia Subsystem (IMS) registration, the device being applied to a terminal, and the device comprising:
a processor; and
a memory configured to store instructions executable for the processor,
wherein the processor is configured to:
determine whether a network side supports an IMS service;
acquire, based on an IMS Access Point Name (APN), an address for the IMS registration when the network side supports the IMS service;
perform the IMS registration based on the acquired address for the IMS registration; and
initiate an IMS re-registration when the IMS registration fails by initiating the IMS re-registration when a number of times that the IMS registration is performed does not reach a first preset threshold;
re-acquire an address for an IMS registration when the number of times that the IMS registration is performed reaches the first preset threshold by:
determining whether a number of times that acquisition for the address the IMS registration is performed reaches a second preset threshold, wherein the second preset threshold is two or more; and
re-acquiring the address for the IMS registration when the number of times that the acquisition is performed does not reach the second preset threshold:

initiate the IMS registration based on the re-acquired address for the IMS registration;
control the terminal to enter a flight mode when the number of times that the acquisition is performed reaches the second preset threshold;
control the terminal to exit the flight mode after the terminal enters the flight mode for a predetermined duration;
perform network attach after the terminal exits the flight mode; and
determine whether the network side supports the IMS service after the terminal is attached to a network.

7. The device of claim 6 , wherein the processor is further configured to:
receive a reason for a failure of the IMS registration; and
determine the first preset threshold based on the reason.

8. The device of claim 7 , wherein the processor is further configured to:
determine that the first preset threshold has a first value when the reason for the failure of the IMS registration is that a registration request of the IMS registration is lost; and
determine that the first preset threshold has a second value when the reason for the failure of the IMS registration is that an IMS server refuses to register, wherein the second value is less than the first value.

9. The device of claim 6 , wherein the processor is further configured to:
send an attach request to the network side;
receive an attach accepted returned by the network side based on the attach request; and
determine whether the network side supports the IMS service based on an IMS service support indication field carried in the attach request.

10. The device of claim 6 , wherein the processor is further configured to:
send a Public Data Network (PDN) connection request to the network side when the network side supports the IMS service; and
receive a connection response returned by the network side based on the PDN connection request, wherein the connection response carries an address for the IMS registration.

11. A non-transitory computer-readable storage medium storing instructions that, when executed by a processor of a terminal, cause the terminal to:
determine whether a network side supports an IMS service;
acquire, based on an IMS Access Point Name (APN), an address for the IMS registration when the network side supports the IMS service;
perform the IMS registration based on the acquired address for the IMS registration; and
initiate an IMS re-registration when the IMS registration fails by initiating the IMS re-registration when a number of times that the IMS registration is performed does not reach a first preset threshold;
re-acquire an address for an IMS registration when the number of times that the IMS registration is performed reaches the first preset threshold by:
determining whether a number of times that acquisition for the address the IMS registration is performed reaches a second preset threshold, wherein the second preset threshold is two or more; and
re-acquiring the address for the IMS registration when the number of times that the acquisition is performed does not reach the second preset threshold:

initiate the IMS registration based on the re-acquired address for the IMS registration;
control the terminal to enter a flight mode when the number of times that the acquisition is performed reaches the second preset

Assignees

• Beijing Xiaomi Mobile Software Co Ltd

Inventors

• Li Wentao
• Cui Hengbin

Classifications

• H04L61/4588

  containing mobile subscriber information, e.g. home subscriber server [HSS] · CPC title

• H04W60/00

  Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration · CPC title

• H04M7/006 Primary

  Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP) , including next generation networks with a packet-switched transport layer (H04L65/00 takes precedence; aspects not specific to the type of network H04M3/00; special services in those networks H04M3/42) · CPC title

• H04L65/1016 Primary

  IP multimedia subsystem [IMS] · CPC title

• H04L65/1069

  Session establishment or de-establishment · CPC title