Method for synchronizing status of UE in a communication network
The present disclosure relates to synchronizing a temporary identity in the UE and the network when the UE is RRC Inactive state over 3GPP access and temporary identity of the UE is changed over a Non-3GPP access in a scenario when the UE is connected to the same AMF via 3GPP and non-3GPP access.
1. A method for a User Equipment (UE), the method comprising:
receiving, over 3 rd Generation Partnership Project (3GPP) access, a first temporary mobile identity for the UE from a first Access and Mobility Management Function (AMF), during a first Non-Access Stratum (NAS) procedure between the UE and the first AMF;
receiving, over non-3GPP access, a second temporary mobile identity for the UE from a second AMF, during a second NAS procedure between the UE and the second AMF, wherein the second AMF is different from the first AMF; and
using a third temporary mobile identity, sent from the second AMF to a Next Generation-Radio Access Network (NG-RAN), for paging, wherein the third temporary mobile identity is derived from the second temporary mobile identity; and
transitioning to a Connection Management (CM) CONNECTED state with a Radio Resource Control (RRC) INACTIVE state.
2. A User Equipment (UE) comprising:
at least one processor; and
a memory coupled to the at least one processor, wherein the at least one processor is configured to:
receive, over 3 rd Generation Partnership Project (3GPP) access, a first temporary mobile identity for the UE from a first Access and Mobility Management Function (AMF), during a first Non-Access Stratum (NAS) procedure between the UE and the first AMF;
receive, over non-3GPP access, a second temporary mobile identity for the UE from a second AMF, during a second NAS procedure between the UE and the second AMF, wherein the second AMF is different from the first AMF;
use a third temporary mobile identity, sent from the second AMF to a Next Generation-Radio Access Network (NG-RAN), for paging, wherein the third temporary mobile identity is derived from the second temporary mobile identity; and
transition to a Connection Management (CM) CONNECTED state with a Radio Resource Control (RRC) INACTIVE state.