Method and apparatus for reporting selected plmn of rrc-inactive mode ue in next-generation communication system

Abstract

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. The method by a user equipment (UE) in a wireless communication system includes reselecting another equivalent public land mobile network (PLMN) in an inactive state, transmitting, to a base station, a radio resource control (RRC) resume request message including a resume cause configured to mobile originated (mo)-signaling in case that a radio access network (RAN)-based notification area update procedure is triggered, and receiving, from the base station, an RRC resume message.

What is claimed is: 
     
         1 . A method performed by a user equipment (UE) in a communication system, the method comprising:
 receiving, from a base station, a radio resource control (RRC) release message;   entering an inactive state based on the RRC release message;   reselecting a cell belonging to an equivalent public land mobile network (PLMN) associated with a shared network;   transmitting, to the base station, an RRC resume request message including a resume cause configured to mobile originated (mo)-signaling;   receiving, from the base station, an RRC resume message as a response to the RRC resume request message; and   transmitting, to the base station, an RRC resume complete message as a response to the RRC resume message, the RRC resume complete message including a non-access stratum (NAS) protocol data unit (PDU) and an identifier of a reselected PLMN.   
     
     
         2 . The method of  claim 1 , wherein the resume cause is configured to mo-signaling based on reselection of the cell belonging to the equivalent PLMN associated with the shared network, in case that a radio access network (RAN)-based notification area update procedure is triggered. 
     
     
         3 . The method of  claim 1 , wherein the RRC release message includes suspend configuration information. 
     
     
         4 . The method of  claim 2 , wherein the RAN-based notification area update procedure is triggered in case that the UE is located in a RAN-based notification area which is not included in RAN indication area information configured to the UE. 
     
     
         5 . A method performed by a base station in a communication system, the method comprising:
 transmitting, to a user equipment (UE), a radio resource control (RRC) release message;   in case that a cell belonging to an equivalent public land mobile network (PLMN) associated with a shared network is reselected by the UE, receiving, from the UE, an RRC resume request message including a resume cause configured to mobile originated (mo)-signaling;   transmitting, to the UE, an RRC resume message as a response to the RRC resume request message; and   receiving, from the UE, an RRC resume complete message as a response to the RRC resume message, the RRC resume complete message including a non-access stratum (NAS) protocol data unit (PDU) and an identifier of a reselected PLMN.   
     
     
         6 . The method of  claim 5 , wherein the resume cause is configured to mo-signaling based on reselection of the cell belonging to the equivalent PLMN associated with the shared network, in case that a radio access network (RAN)-based notification area update procedure is triggered. 
     
     
         7 . The method of  claim 5 , wherein the RRC release message includes suspend configuration information.. 
     
     
         8 . The method of  claim 6 , wherein the RAN-based notification area update procedure is triggered in case that the UE is located in a RAN-based notification area which is not included in RAN notification area information configured for the UE. 
     
     
         9 . A user equipment (UE) in a communication system, the UE comprising:
 a transceiver; and   at least one processor coupled with the transceiver and configured to:
 receive, from a base station, a radio resource control (RRC) release message, 
 enter an inactive state based on the RRC release message, 
 reselect a cell belonging to an equivalent public land mobile network (PLMN) associated with a shared network, 
 transmit, to the base station, an RRC resume request message including a resume cause configured to mobile originated (mo)-signaling, 
 receive, from the base station, an RRC resume message as a response to the RRC resume request message, and 
 transmit, to the base station, an RRC resume complete message as a response to the RRC resume message, the RRC resume complete message including a non-access stratum (NAS) protocol data unit (PDU) and an identifier of a reselected PLMN. 
   
     
     
         10 . The UE of  claim 9 , wherein the resume cause is configured to mo-signaling based on reselection of the cell belonging to the equivalent PLMN associated with the shared network, in case that a radio access network (RAN)-based notification area update procedure is triggered. 
     
     
         11 . The UE of  claim 9 , wherein the RRC release message includes suspend configuration information. 
     
     
         12 . The UE of  claim 10 , wherein the RAN-based notification area update procedure is triggered in case that the UE is located in a RAN-based notification area which is not included in RAN indication area information configured to the UE. 
     
     
         13 . A base station in a communication system, the base station comprising:
 a transceiver; and   at least one processor coupled with the transceiver and configured to:
 transmit, to a user equipment (UE), a radio resource control (RRC) release message, 
 in case that a cell belonging to an equivalent public land mobile network (PLMN) associated with a shared network is reselected by the UE, receive, from the UE, an RRC resume request message including a resume cause configured to mobile originated (mo)-signaling, 
 transmit, to the UE, an RRC resume message as a response to the RRC resume request message, and 
 receive, from the UE, an RRC resume complete message as a response to the RRC resume message, the RRC resume complete message including a non-access stratum (NAS) protocol data unit (PDU) and an identifier of a reselected PLMN. 
   
     
     
         14 . The base station of  claim 13 ,
 wherein the resume cause is configured to mo-signaling based on reselection of the cell belonging to the equivalent PLMN associated with the shared network, in case that a radio access network (RAN)-based notification area update procedure is triggered, and   wherein the RRC release message includes suspend configuration information.   
     
     
         15 . The base station of  claim 13 , wherein the RAN-based notification area update procedure is triggered in case that the UE is located in a RAN-based notification area which is not included in RAN notification area information configured for the UE.