NAS connection release for hosting network
AssigneeMediatek Inc.
InventorsYuan-Chieh Lin, Chia-Lin Lai
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Abstract
In accordance with one novel aspect, a method of handling updated a CAG related configuration and in response perform a NAS procedure for releasing NAS connection is proposed. While camping on a CAG cell, during a NAS procedure, a UE receives a DL NAS message from AMF that carries validity or restriction information associated with a CAG-ID for the current PLMN and the CAG-ID is supported by the current CAG cell and included in the DL NAS message, and the validity or restriction criteria are not met according to the validity or restriction information. The UE starts a timer to allow the AMF to release the NAS connection. The UE locally releases the NAS connection upon timer expiry.
Claims20
A method, comprising:
- maintaining a non-access stratum (NAS) connection with a user equipment (UE) by a network entity, wherein the UE is camped on a Closed Access Group (CAG) cell;
- performing a NAS procedure and transmitting a downlink NAS message to the UE via the CAG cell, wherein the NAS message includes a CAG related configuration comprising an allowed CAG list, wherein a first CAG-ID is supported by the CAG cell and included in the allowed CAG list, and wherein the first CAG-ID is associated with validity information comprising validity criteria;
- and
- initiating to release the NAS connection when determining that the validity criteria associated with the first CAG-ID are not met.
A method, comprising:
- camping on a closed access group (CAG) cell of a network by a user equipment (UE), wherein the UE establishes a non-access stratum (NAS) connection;
- receiving a downlink NAS message via the CAG cell, wherein the downlink NAS message includes a CAG related configuration comprising an allowed CAG list, wherein a first CAG-ID is supported by the CAG cell and included in the allowed CAG list, and wherein the first CAG-ID is associated with validity information comprising validity criteria;
- determining that the validity criteria associated with the first CAG-ID are not met;
- and
- starting a timer in response to the completion of a NAS procedure triggering the sending of the downlink NAS message, and releasing the NAS connection upon the timer expiry or upon receiving a NAS connection release command from the network.
A User Equipment (UE), comprising:
- a network or cell selection handling circuit that camps on a closed access group (CAG) cell of a network, wherein the UE establishes a non-access stratum (NAS) connection;
- a receiver that receives a downlink NAS message via the CAG cell, wherein the downlink NAS message includes a CAG related configuration comprising an allowed CAG list, wherein a first CAG-ID is supported by the CAG cell and included in the allowed CAG list, and wherein the first CAG-ID is associated with validity information comprising validity criteria;
- a control circuit that determines that the validity criteria associated with the first CAG-ID are not met;
- and
- a timer is started in response to the completion of a NAS procedure triggering the sending of the downlink NAS message, wherein the UE releases the NAS connection upon the timer expiry or upon receiving a NAS connection release command from the network.
Dependencies are inferred from the claim text.