Method and UE for performing RID update in UE in wireless communication network
The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. Embodiments herein provide a method for performing a routing ID (RID) update in user equipment (UE) in a wireless communication network.
1. A method performed by a user equipment (UE) in a communication system, the method comprising:
receiving information including updated routing ID and an indication to initiate a registration procedure,
determining that the UE is registered over a non-3rd generation partnership project (non-3GPP) access and the UE does not have an emergency service ongoing over the non-3GPP access;
releasing a non-access stratum (NAS) signaling connection locally over the non-3GPP access and entering an IDLE mode over the non-3GPP access;
performing a de-registration procedure over the non-3GPP access; and
initiating a registration procedure for initial registration based on the updated routing ID.
2. The method of claim 1 , in case that the UE is registered over the non-3GPP access and has an emergency service ongoing over the non-3GPP access, the method further comprising:
waiting until the emergency service is completed;
releasing the NAS signaling connection locally and entering the IDLE mode over the non-3GPP access, after waiting the emergency service is completed;
performing the de-registration procedure over the non-3GPP access; and
initiating the registration procedure for initial registration over the non-3GPP access.
3. The method of claim 1 , wherein, in case that the UE is registered over a 3GPP access, the method further comprising:
waiting until the UE enters the IDLE mode over the 3GPP access;
performing the de-registration procedure over the 3GPP access; and
initiating the registration procedure for initial registration over the 3GPP access.
4. The method of claim 1 , wherein the information is received in a downlink Non-Access Stratum (DL NAS) transport message.
5. The method of claim 1 , further comprising deleting a 5G-globally unique temporary identifier (5G-GUTI) in case that the UE is registered to a different public land mobile network (PLMN) on a 3GPP access, before initiating the registration procedure for initial registration.
6. A user equipment (UE) in a communication system, the UE comprising:
a transceiver; and
at least one processor configured to:
receive information including updated routing ID and an indication to initiate a registration procedure,
determine that the UE is registered over a non-3rd generation partnership project (non-3GPP) access and the UE does not have an emergency service ongoing over the non-3GPP access,
release a non-access stratum (NAS) signaling connection locally over the non-3GPP access and enter an IDLE mode over the non-3GPP access,
perform a de-registration procedure over the non-3GPP access, and
initiate a registration procedure for initial registration based on the updated routing ID.
7. The UE of claim 6 , wherein, in case that the UE is registered over the non-3GPP access and has an emergency service ongoing over the non-3GPP access, the at least one processor is further configured to:
wait until the emergency service is completed;
release the NAS signaling connection locally and enter the IDLE mode over the non-3GPP access, after waiting the emergency service is completed;
perform the de-registration procedure over the non-3GPP access; and
initiate the registration procedure for initial registration over the non-3GPP access.
8. The UE of claim 6 , wherein, in case that the UE is registered over a 3GPP access, the at least one processor is further configured to:
wait until the UE enters the IDLE mode over the 3GPP access;
perform the de-registration procedure over the 3GPP access; and
initiate the registration procedure for initial registration over the 3GPP access.
9. The UE of claim 6 , wherein the information is received in a downlink Non-Access Stratum (DL NAS) transport message.
10. The UE of claim 6 , the at least one processor is further configured to delete a 5G-globally unique temporary identifier (5G-GUTI) in case that the UE is registered to a different public land mobile network (PLMN) on a 3GPP access, before initiating the registration procedure for initial registration.