# US 2025/0098010 A1 · Wireless communication method, terminal device, and network device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0098010 A1 - Document ID: US20250098010A1 - Status: Published application - Kind: A1 - Application number: 18/972,665 - Filed: 2024-12-06 - Published: 2025-03-20 - Earliest claimed: 2022-07-15 - Assignees: Guangdong Oppo Mobile Telecommunications Corp., Ltd. - Applicants: Guangdong Oppo Mobile Telecommunications Corp., Ltd. - Inventors: Yang LIU - Web page: https://patentgrep.com/patent/US20250098010A1 ## CPC - H04W 76/19: Connection re-establishment - H04W 76/15: Setup of multiple wireless link connections - H04W 76/27: Transitions between radio resource control [RRC] states - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract A wireless communication method, applied to the terminal device, includes: generating first information, where the first information includes a fast MCG recovery failure report; and transmitting the first information. ## Claims ### Claim 1 A wireless communication method, applied to a terminal device, wherein the method comprises: generating first information, wherein the first information comprises a fast master cell group (MCG) recovery failure report; and transmitting the first information. ### Claim 2 (depends on 1) The method according to claim 1, wherein the fast MCG recovery failure report comprises at least one of: location information of the terminal device, an identity of a failed primary cell, configured duration information of T316, a measurement result of a cell in a secondary cell group (SCG), indication information used to indicate that the terminal device has performed a fast MCG recovery, or indication information used to indicate that the terminal device has transmitted an MCG failure indication. ### Claim 3 (depends on 2) The method according to claim 2, wherein the location information of the terminal device comprises at least one of: location information of the terminal device before an MCG failure occurs, or location information of the terminal device before the terminal device transmits a radio resource control (RRC) re-establishment request; and/or the measurement result of the cell in the SCG comprises at least one of: a measurement result of the cell in the SCG before an MCG failure, a measurement result of the cell in the SCG before the T316 expires, a measurement result of the cell in the SCG before the terminal device performs a cell reselection, or a measurement result of the cell in the SCG before the terminal device transmits an RRC re-establishment request; wherein the cell in the SCG comprises a primary secondary cell and/or a secondary cell. ### Claim 4 (depends on 2) The method according to claim 2, wherein the method further comprises: generating the fast MCG recovery failure report in a case where at least one of the following conditions is met: a condition that the fast MCG recovery has been performed and the T316 has expired; a condition that the fast MCG recovery has been performed and a cell reselection has been performed; a condition that the fast MCG recovery has been performed and an RRC re-establishment request has been transmitted; a condition that the MCG failure indication is transmitted to a master node (MN), and the T316 has expired; a condition that the MCG failure indication is transmitted to an MN and a cell reselection has been performed; or a condition that the MCG failure indication is transmitted to an MN, and an RRC re-establishment request has been transmitted. ### Claim 5 (depends on 4) The method according to claim 4, wherein the MCG failure indication is transmitted to the MN via the SCG. ### Claim 6 (depends on 1) The method according to claim 1, wherein the method further comprises: transmitting first indication information; wherein the first indication information is used to indicate that the terminal device has the fast MCG recovery failure report to be reported; and/or the method further comprises: receiving first request information; wherein the first request information is used to request the terminal device to report the fast MCG recovery failure report. ### Claim 7 (depends on 1) The method according to claim 1, wherein the transmitting the first information, comprises: transmitting the first information after the terminal device successfully performs an RRC connection re-establishment; or, transmitting the first information after the terminal device successfully connects to a reselected primary cell. ### Claim 8 A terminal device, comprising: a processor and a memory, wherein the memory is configured to store a computer program, and the processor is configured to invoke and execute the computer program stored in the memory, to enable the terminal device to perform: generating first information, wherein the first information comprises a fast master cell group (MCG) recovery failure report; and transmitting the first information. ### Claim 9 (depends on 8) The terminal device according to claim 8, wherein the fast MCG recovery failure report comprises at least one of: location information of the terminal device, an identity of a failed primary cell, configured duration information of T316, a measurement result of a cell in a secondary cell group (SCG), indication information used to indicate that the terminal device has performed a fast MCG recovery, or indication information used to indicate that the terminal device has transmitted an MCG failure indication. ### Claim 10 (depends on 9) The terminal device according to claim 9, wherein the location information of the terminal device comprises at least one of: location information of the terminal device before an MCG failure occurs, or location information of the terminal device before the terminal device transmits a radio resource control (RRC) re-establishment request; and/or the measurement result of the cell in the SCG comprises at least one of: a measurement result of the cell in the SCG before an MCG failure, a measurement result of the cell in the SCG before the T316 expires, a measurement result of the cell in the SCG before the terminal device performs a cell reselection, or a measurement result of the cell in the SCG before the terminal device transmits an RRC re-establishment request; wherein the cell in the SCG comprises a primary secondary cell and/or a secondary cell. ### Claim 11 (depends on 9) The terminal device according to claim 9, wherein the terminal device further performs: generating the fast MCG recovery failure report in a case where at least one of the following conditions is met: a condition that the fast MCG recovery has been performed and the T316 has expired; a condition that the fast MCG recovery has been performed and a cell reselection has been performed; a condition that the fast MCG recovery has been performed and an RRC re-establishment request has been transmitted; a condition that the MCG failure indication is transmitted to a master node (MN), and the T316 has expired; a condition that the MCG failure indication is transmitted to an MN and a cell reselection has been performed; or a condition that the MCG failure indication is transmitted to an MN, and an RRC re-establishment request has been transmitted. ### Claim 12 (depends on 8) The terminal device according to claim 8, wherein the terminal device further performs: transmitting first indication information; wherein the first indication information is used to indicate that the terminal device has the fast MCG recovery failure report to be reported; and/or the terminal device further performs: receiving first request information; wherein the first request information is used to request the terminal device to report the fast MCG recovery failure report. ### Claim 13 (depends on 8) The terminal device according to claim 8, wherein the terminal device performs: transmitting the first information after the terminal device successfully performs an RRC connection re-establishment; or, transmitting the first information after the terminal device successfully connects to a reselected primary cell. ### Claim 14 A network device, comprising: a processor and a memory, wherein the memory is configured to store a computer program, and the processor is configured to invoke and execute the computer program stored in the memory, to enable the network device to perform: receiving first information, wherein the first information comprises a fast master cell group (MCG) recovery failure report. ### Claim 15 (depends on 14) The network device according to claim 14, wherein the fast MCG recovery failure report comprises at least one of: location information of a terminal device, an identity of a failed primary cell, configured duration information of T316, a measurement result of a cell in a secondary cell group (SCG), indication information used to indicate that a terminal device has performed a fast MCG recovery, or indication information used to indicate that a terminal device has transmitted an MCG failure indication. ### Claim 16 (depends on 15) The network device according to claim 15, wherein the location information of the terminal device comprises at least one of: location information of the terminal device before an MCG failure, or location information of the terminal device before the terminal device transmits a radio resource control (RRC) re-establishment request; and/or the measurement result of the cell in the SCG comprises at least one of: a measurement result of the cell in the SCG before an MCG failure, a measurement result of the cell in the SCG before the T316 expires, a measurement result of the cell in the SCG before the terminal device performs a cell reselection, or a measurement result of the cell in the SCG before the terminal device transmits an RRC re-establishment request; wherein the cell in the SCG comprises a primary secondary cell and/or a secondary cell. ### Claim 17 (depends on 15) The network device according to claim 15, wherein the fast MCG recovery failure report is generated in a case where at least one of the following conditions is met: a condition that the fast MCG recovery has been performed and the T316 has expired; a condition that the fast MCG recovery has been performed and a cell reselection has been performed; a condition that the fast MCG recovery has been performed and an RRC re-establishment request has been transmitted; a condition that the MCG failure indication is transmitted to a master node (MN), and the T316 has expired; a condition that the MCG failure indication is transmitted to an MN and a cell reselection has been performed; or a condition that the MCG failure indication is transmitted to an MN, and an RRC re-establishment request has been transmitted. ### Claim 18 (depends on 14) The network device according to claim 14, wherein the network device further performs: receiving first indication information; wherein the first indication information is used to indicate that a terminal device has the fast MCG recovery failure report to be reported; and/or the network device further performs: transmitting first request information; wherein the first request information is used to request a terminal device to report the fast MCG recovery failure report. ### Claim 19 (depends on 14) The network device according to claim 14, wherein the first information is transmitted after a terminal device successfully performs an RRC connection re-establishment; or, the first information is transmitted after a terminal device successfully connects to a reselected primary cell. ### Claim 20 (depends on 14) The network device according to claim 14, wherein the network device further performs: transmitting the fast MCG recovery failure report to an MN in which a failed primary cell is located; wherein the fast MCG recovery failure report is used to optimize a T316 configuration by the MN in which the failed primary cell is located.