# US 12,604,360 B2 · Method and device for managing long-time switching timer in wireless communication system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,604,360 B2 - Document ID: US12604360B2 - Status: Granted - Kind: B2 - Application number: 18/550,310 - Filed: 2022-03-24 - Published: 2024-06-06 - Granted: 2026-04-14 - Earliest claimed: 2021-03-26 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Sangyeob Jung - Web page: https://patentgrep.com/patent/US12604360B2 ## CPC - H04W 76/27: Transitions between radio resource control [RRC] states - H04L 69/28: Timers or timing mechanisms used in protocols - H04W 76/19: Connection re-establishment - H04W 76/30: Connection release - H04W 76/38: triggered by timers - H04W 88/06: adapted for operation in multiple networks {or having at least two operational modes}, e.g. multi-mode terminals - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract The present disclosure relates to a 5th generation (5G) or 6th generation (6G) communication system for supporting a higher data rate. Provided is a method performed by a user equipment (UE) in a wireless communication system. The method may include: receiving, from a base station (BS), configuration information associated with the UE to leave a radio resource control (RRC) connection state for a multi-universal subscriber identity module (MUSIM) operation; based on the configuration information, transmitting, to the BS, information indicating a preferred RRC state when the UE leaves the RRC connection state, and starting a timer; and transitioning to an RRC idle state when the timer expires. ## Claims ### Claim 1 A method performed by a user equipment (UE) in a wireless communication system, the method comprising: receiving, from a base station, a first radio resource control (RRC) reconfiguration message including configuration information associated with the UE to leave an RRC connection state for a multi-universal subscriber identity module (MUSIM) operation, wherein the configuration information includes information associated with a timer for entering an RRC idle state without a response; in case that the UE needs to leave the RRC connection state, starting the timer; receiving, from the base station, a second RRC reconfiguration message; and in case that the timer is running, stopping the timer, upon reception of the second RRC reconfiguration message. ### Claim 2 (depends on 1) The method of claim 1, further comprising in case that the UE needs to leave the RRC connection state, transmitting, to the base station, UE assistance information associated with a preference to leave the RRC connection state. ### Claim 3 (depends on 2) The method of claim 2, wherein the UE assistance information includes information indicating a preferred RRC state when leaving the RRC connection state, and wherein the preferred RRC state includes the RRC idle state or an RRC inactive state. ### Claim 4 (depends on 2) The method of claim 2, wherein the UE assistance information includes information indicating the preference to leave the RRC connection state. ### Claim 5 (depends on 1) The method of claim 1, wherein the timer is started with a timer value set to the information associated with the timer. ### Claim 6 (depends on 1) The method of claim 1, wherein based the second RRC reconfiguration message, the configuration information is released. ### Claim 7 (depends on 1) The method of claim 1, further comprising in case that the timer is running, stopping the timer, based on an RRC connection release message received from the base station. ### Claim 8 A method performed by a base station in a wireless communication system, the method comprising: transmitting, to a user equipment (UE), a first radio resource control (RRC) reconfiguration message including configuration information associated with the UE to leave a radio resource control (RRC) connection state for a multi-universal subscriber identity module (MUSIM) operation, the configuration information including information associated with a timer for the UE to enter an RRC idle state without a response; and transmitting, to the UE, a second RRC reconfiguration message, wherein the second RRC reconfiguration message is associated with stopping the timer. ### Claim 9 (depends on 8) The method of claim 8, further comprising receiving, from the UE, UE assistance information associated with a preference to leave the RRC connection state, in case that the UE needs to leave the RRC connection state, wherein the UE assistance information includes information indicating a preferred RRC state when leaving the RRC connection state or information indicating the preference to leave the RRC connection state, and wherein the preferred RRC state includes the RRC idle state or an RRC inactive state. ### Claim 10 (depends on 8) The method of claim 8, wherein the timer is started with a timer value set to the information associated with the timer. ### Claim 11 (depends on 8) The method of claim 8, wherein the second RRC reconfiguration message is associated with release of the configuration information. ### Claim 12 (depends on 8) The method of claim 8, further comprising transmitting, to the UE, an RRC connection release message associated with stopping of the timer. ### Claim 13 A user equipment (UE) in a wireless communication system, the UE comprising: at least one transceiver; at least one processor communicatively coupled to the at least one transceiver; and at least one memory, communicatively coupled to the at least one processor, storing instructions executable by the at least one processor to cause the UE to: receive, from a base station, a first radio resource control (RRC) reconfiguration message including configuration information associated with the UE to leave an RRC connection state for a multi-universal subscriber identity module (MUSIM) operation, wherein the configuration information includes information associated with a timer for entering an RRC idle state without a response, in case that the UE needs to leave the RRC connection state, start the timer, receive, from the base station, a second RRC reconfiguration message, and in case that the timer is running, stop the timer, upon reception of the second RRC reconfiguration message. ### Claim 14 (depends on 13) The UE of claim 13, wherein the UE is further caused to: in case that the UE needs to leave the RRC connection state, transmit, to the base station, UE assistance information associated with a preference to leave the RRC connection state. ### Claim 15 (depends on 14) The UE of claim 14, wherein the UE assistance information includes information indicating a preferred RRC state when leaving the RRC connection state, and wherein the preferred RRC state includes the RRC idle state or an RRC inactive state. ### Claim 16 (depends on 14) The UE of claim 14, wherein the UE assistance information includes information indicating the preference to leave the RRC connection state. ### Claim 17 (depends on 13) The UE of claim 13, wherein based on the second RRC reconfiguration message, the configuration information is released. ### Claim 18 A base station in a wireless communication system, the base station comprising: at least one transceiver; at least one processor communicatively coupled to the at least one transceiver; and at least one memory, communicatively coupled to the at least one processor, storing instructions executable by the at least one processor to cause the base station to: transmit, to a user equipment (UE), a first radio resource control (RRC) reconfiguration message including configuration information associated with the UE to leave a radio resource control (RRC) connection state for a multi-universal subscriber identity module (MUSIM) operation, the configuration information including information associated with a timer for the UE to enter an RRC idle state without a response; and transmit, to the UE, a second RRC reconfiguration message, wherein the second RRC reconfiguration message is associated with stopping the timer. ### Claim 19 (depends on 18) The base station of claim 18, wherein the base station is further caused to: receive, from the UE, UE assistance information associated with a preference to leave the RRC connection state, in case that the UE needs to leave the RRC connection state, wherein the UE assistance information includes information indicating a preferred RRC state when leaving the RRC connection state or information indicating the preference to leave the RRC connection state, and wherein the preferred RRC state includes the RRC idle state or an RRC inactive state. ### Claim 20 (depends on 18) The base station of claim 18, wherein the second RRC reconfiguration message is associated with release of the configuration information.