Radio capability change

Patent metadata

Field	Value
Publication number	US-12483879-B2
Application number	US-202218087682-A
Country	US
Kind code	B2
Filing date	Dec 22, 2022
Priority date	May 18, 2018
Publication date	Nov 25, 2025
Grant date	Nov 25, 2025

Abstract

Apparatuses, methods, and systems are disclosed for modifying a radio capability. One method includes determining that an update of a radio access capability for a first radio access technology is required based at least in part on whether to use a second radio access technology. The method includes switching to an idle state based on determining that the update of the radio access capability for the first radio access technology is required and transmitting a request message indicating that the update of the radio access capability for the first radio access technology is required in response to switching to the idle state, the request message further indicating to delete a stored radio access capability associated with the UE and obtain a new radio access capability associated with the UE.

First claim

The invention claimed is:

1 . A user equipment (“UE”) for wireless communication, comprising:
at least one memory; and
at least one processor coupled with the at least one memory and configured to cause the UE to:
determine whether the UE is registered concurrently with a first system associated with a first radio access technology and second system associated with a second radio access technology;
determine that an update of a radio access capability for a first radio access technology is required based on the determination that the UE is registered concurrently in accordance with the first system and the second system;
switch to an idle state based on the determination that the update of the radio access capability for the first radio access technology is required; and
transmit a request message indicating that the update of the radio access capability for the first radio access technology is required in response to the switch to the idle state, the request message further indicating to delete a stored radio access capability associated with the UE and obtain a new radio access capability associated with the UE.

2 . The UE of claim 1 , wherein, to transmit the request message indicating that the update of the radio access capability for the first radio access technology is required, the at least one processor is configured to cause the UE to:
transmit the request message using a non-access stratum procedure, wherein the request message comprises a non-access stratum request message.

3 . The UE of claim 1 , wherein, to transmit the request message indicating that the update of the radio access capability for the first radio access technology is required, the at least one processor is configured to cause the UE to:
transmit a tracking area update request indicating that the update of the radio access capability for the first radio access technology is required.

4 . The UE of claim 1 , wherein the at least one processor is configured to cause the UE to:
register with a first communication system using the first radio access technology.

5 . The UE of claim 4 , wherein, to determine that the update of the radio access capability for the first radio access technology is required, the at least one processor is configured to cause the UE to:
determine whether the registered first communication system supports a service for the UE.

6 . The UE of claim 4 , wherein the at least one processor is configured to cause the UE to:
detect a trigger that the update of the radio access capability for the first radio access technology is required, wherein the trigger comprises that a service for the UE is unsupported by the registered first communication system.

7 . The UE of claim 4 , wherein the at least one processor is configured to cause the UE to:
register with a second communication system based on the determination that the update of the radio access capability for the first radio access technology is required.

8 . The UE of claim 7 , wherein the first communication system is different than the second communication system.

9 . The UE of claim 4 , wherein, to register with the first communication system, the at least one processor is configured to cause the UE to:
transmit an indication of one or more radio access capabilities associated with the UE.

10 . A method performed by a user equipment (“UE”), the method comprising:
determine whether the UE is registered concurrently with a first system associated with a first radio access technology and second system associated with a second radio access technology;
determining that an update of a radio access capability for a first radio access technology is required based on the determination that the UE is registered concurrently in accordance with the first system and the second system;
switching to an idle state based on determining that the update of the radio access capability for the first radio access technology is required; and
transmitting a request message indicating that the update of the radio access capability for the first radio access technology is required in response to switching to the idle state, the request message further indicating to delete a stored radio access capability associated with the UE and obtain a new radio access capability associated with the UE.

11 . The method of claim 10 , wherein transmitting the request message indicating that the update of the radio access capability for the first radio access technology is required comprises:
transmitting the request message using a non-access stratum procedure, wherein the request message comprises a non-access stratum request message.

12 . The method of claim 10 , wherein transmitting the request message indicating that the update of the radio access capability for the first radio access technology is required comprises:
transmitting a tracking area update request indicating that the update of the radio access capability for the first radio access technology is required.

13 . The method of claim 10 , further comprising:
registering with a first communication system using the first radio access technology.

14 . The method of claim 13 , wherein determining that the update of the radio access capability for the first radio access technology is required comprises:
determining whether the registered first communication system supports a service for the UE.

15 . The method of claim 13 , further comprising:
detecting a trigger that the update of the radio access capability for the first radio access technology is required, wherein the trigger comprises that a service for the UE is unsupported by the registered first communication system.

16 . The method of claim 13 , further comprising:
registering with a second communication system based on determining that the update of the radio access capability for the first radio access technology is required.

17 . The method of claim 16 , wherein the first communication system is different than the second communication system.

18 . The method of claim 13 , wherein registering with the first communication system comprises:
transmitting an indication of one or more radio access capabilities associated with the UE.

Assignees

• Lenovo Singapore Pte Ltd

Inventors

• Velev Genadi
• Basu Mallick Prateek
• Loehr Joachim
• Kuchibhotla Ravi

Classifications

• H04W84/042

  Public Land Mobile systems, e.g. cellular systems · CPC title

• H04W60/00

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

• H04W36/0022

  for transferring data sessions between adjacent core network technologies · CPC title

• H04W8/08

  Mobility data transfer · CPC title

• H04W8/04

  Registration at HLR or HSS [Home Subscriber Server] · CPC title