# US 10,772,155 B2 · Radio link failure handling method and related product > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,772,155 B2 - Document ID: US10772155B2 - Status: Granted - Kind: B2 - Application number: 16/657,153 - Filed: 2019-10-18 - Published: 2020-02-13 - Granted: 2020-09-08 - Earliest claimed: 2018-02-07 - Assignees: Guangdong Oppo Mobile Telecommunications Corp., Ltd. - Applicants: Guangdong OPPO Mobile Telecommunications Corp., Ltd. - Inventors: Cong Shi - Web page: https://patentgrep.com/patent/US10772155B2 ## CPC - H04W 76/34: Selective release of ongoing connections - H04L 5/00: Arrangements affording multiple use of the transmission path - H04W 24/00: Supervisory, monitoring or testing arrangements - H04W 76/15: Setup of multiple wireless link connections - H04W 76/19: Connection re-establishment - 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 A method, terminal and non-transitory computer-readable storage medium for processing a radio link failure and a related product are provided. The method includes: triggering, by the terminal, a communication failure process according to a configuration of the Radio Link Control (RLC) layer entity, when the RLC layer entity reaches a maximum number of retransmission times. ## Claims ### Claim 1 A method for processing a radio link failure, applied to a terminal, wherein the terminal comprises a Radio Link Control (RLC) layer entity, and the method comprises: triggering a communication failure process according to a configuration of the RLC layer entity, when the RLC layer entity reaches a maximum number of retransmission times; wherein a carrier set configured for a logical channel corresponding to the RLC layer entity comprises a Primary Secondary Cell (PSCell); and triggering the communication failure process according to the configuration of the RLC layer entity comprises: triggering a radio link failure process of a Secondary Cell Group (SCG); wherein the triggering the radio link failure process comprises the following steps: suspending all radio bearers except a signal radio bearer SRB0; resetting a Medium Access Control (MAC) layer; and initializing transmission of a Radio Resource Control (RRC) connection reestablishment request message. ### Claim 2 (depends on 1) The method of claim 1, wherein the communication failure comprises any one of the following: a radio link failure, a radio link failure of a Secondary Cell Group (SCG), or a radio link failure of a Secondary Cell (SCell). ### Claim 3 (depends on 1) The method of claim 1, wherein that the RLC layer entity reaches the maximum number of retransmission times refers to that a number of data retransmission times of the RLC layer entity reaches a preset maximum retransmission threshold. ### Claim 4 (depends on 1) The method of claim 1, wherein a carrier set configured for a logical channel corresponding to the RLC layer entity comprises a Primary Cell (PCell); and triggering the communication failure process according to the configuration of the RLC layer entity comprises: triggering a radio link failure process. ### Claim 5 (depends on 4) The method of claim 4, wherein that the carrier set configured for the logical channel corresponding to the RLC layer entity comprises the Primary Cell (PCell) specifically refers to a following situation: logical channel data corresponding to the RLC layer entity is allowed to be transmitted on the PCell, in a case that a bearer corresponding to the RLC layer entity is configured with data duplication and the data duplication is activated. ### Claim 6 (depends on 4) The method of claim 4, wherein that the carrier set configured for the logical channel corresponding to the RLC layer entity comprises the Primary Cell (PCell) specifically refers to a following situation: logical channel data corresponding to the RLC layer entity is allowed to be transmitted on the PCell, in a case that a bearer corresponding to the RLC layer entity is configured with data duplication but the data duplication is not activated. ### Claim 7 (depends on 4) The method of claim 4, wherein that the carrier set configured for the logical channel corresponding to the RLC layer entity comprises the Primary Cell (PCell) specifically refers to a following situation: logical channel data corresponding to the RLC layer entity is allowed to be transmitted on the PCell, in a case that a bearer configuration corresponding to the RLC layer entity is not configured with data duplication. ### Claim 8 (depends on 4) The method of claim 4, wherein the RLC layer entity refers to a Primary Radio Link Control (RLC) layer entity under a carrier aggregation duplication function (CA duplication). ### Claim 9 (depends on 8) The method of claim 8, wherein the Primary RLC layer entity refers to an RLC layer entity that continues to receive new data from a Packet Data Convergence Protocol (PDCP) layer entity after a carrier aggregation duplication function (CA duplication) of the terminal is deactivated. ### Claim 10 (depends on 1) The method of claim 1, that the carrier set configured for the logical channel corresponding to the RLC layer entity comprises the Primary Secondary Cell (PSCell) specifically refers to a following situation: logical channel data corresponding to the RLC layer entity is allowed to be transmitted on the PSCell, in a case that a bearer corresponding to the RLC layer entity is configured with data duplication and the data duplication is activated. ### Claim 11 (depends on 1) The method of claim 1, wherein that the carrier set configured for the logical channel corresponding to the RLC layer entity comprises the Primary Secondary Cell (PSCell) specifically refers to a following situation: logical channel data corresponding to the RLC layer entity is allowed to be transmitted on the PSCell, in a case that a bearer corresponding to the RLC layer entity is configured with data duplication but the data duplication is not activated. ### Claim 12 (depends on 1) The method of claim 1, wherein that the carrier set configured for the logical channel corresponding to the RLC layer entity comprises the Primary Secondary Cell (PSCell) specifically refers to a following situation: logical channel data corresponding to the RLC layer entity is allowed to be transmitted on the PSCell, in a case that a bearer corresponding to the RLC layer entity is not configured with data duplication. ### Claim 13 (depends on 1) The method of claim 1, wherein the RLC layer entity refers to a Primary Radio Link Control (RLC) layer entity under a carrier aggregation duplication function (CA duplication). ### Claim 14 (depends on 1) The method of claim 1, wherein a carrier set configured for a logical channel corresponding to the RLC layer entity only comprises a Secondary Cell (SCell); and triggering the communication failure process according to the configuration of the RLC layer entity comprises: triggering reporting of a radio link failure of the SCell. ### Claim 15 (depends on 14) The method of claim 14, wherein that the carrier set configured for the logical channel corresponding to the RLC layer entity only comprises the SCell specifically refers to a following situation: logical channel data corresponding to the RLC layer entity is only able to be transmitted on the SCell, in a case that a bearer corresponding to the RLC layer entity is configured with data duplication and the data duplication is activated. ### Claim 16 (depends on 14) The method of claim 14, wherein the RLC layer entity refers to a Primary Radio Link Control (RLC) layer entity under a carrier aggregation duplication function (CA duplication). ### Claim 17 (depends on 14) The method of claim 14, wherein the RLC layer entity refers to a secondary Radio Link Control (RLC) layer entity under a carrier aggregation duplication function (CA duplication). ### Claim 18 (depends on 17) The method of claim 17, wherein the secondary RLC refers to an RLC layer entity that no longer receives new data of a Packet Data Convergence Protocol (PDCP) layer entity after a carrier aggregation duplication function (CA duplication) of the terminal is deactivated. ### Claim 19 A terminal, wherein the terminal comprises a processor, a memory, and a communication interface, wherein one or more programs are stored in the memory and configured to be executed by the processor, and the one or more programs include instructions for: triggering a communication failure process according to a configuration of a Radio Link Control (RLC) layer entity, when the RLC layer entity reaches a maximum number of retransmission times through the communication interface; wherein a carrier set configured for a logical channel corresponding to the RLC layer entity comprises a Primary Secondary Cell (PSCell); and triggering the communication failure process according to the configuration of the RLC layer entity comprises: triggering a radio link failure process of a Secondary Cell Group (SCG); wherein the triggering the radio link failure process comprises the following steps: suspending all radio bearers except a signal radio bearer SRB0; resetting a Medium Access Control (MAC) layer; and initializing transmission of a Radio Resource Control (RRC) connection reestablishment request message. ### Claim 20 (depends on 19) The terminal of claim 19, wherein the communication failure comprises any of the following: a radio link failure, a radio link failure of a Secondary Cell Group (SCG), a radio link failure of a Secondary Cell (SCell). ### Claim 21 (depends on 19) The terminal of claim 19, wherein a carrier set configured for a logical channel corresponding to the RLC layer entity comprises a Primary Cell (PCell); and in an aspect of triggering the communication failure process according to the configuration of the RLC layer entity, the instructions are specifically for triggering a radio link failure process. ### Claim 22 (depends on 21) The terminal of claim 21, wherein that the carrier set configured for the logical channel corresponding to the RLC layer entity comprises the Primary Cell (PCell) specifically refers to a following situation: logical channel data corresponding to the RLC layer entity is allowed to be transmitted on the PCell, in a case that a bearer corresponding to the RLC layer entity is configured with data duplication and the data duplication is activated. ### Claim 23 (depends on 21) The terminal of claim 21, wherein that the carrier set configured for the logical channel corresponding to the RLC layer entity comprises the Primary Cell (PCell) specifically refers to a following situation: logical channel data corresponding to the RLC layer entity is allowed to be transmitted on the PCell, in a case that a bearer corresponding to the RLC layer entity is configured with data duplication but the data duplication is not activated. ### Claim 24 (depends on 21) The terminal of claim 21, wherein that the carrier set configured for the logical channel corresponding to the RLC layer entity comprises the Primary Cell (PCell) specifically refers to a following situation: logical channel data corresponding to the RLC layer entity is allowed to be transmitted on the PCell, in a case that a bearer configuration corresponding to the RLC layer entity is not configured with data duplication. ### Claim 25 (depends on 21) The terminal of claim 21, wherein the RLC layer entity refers to a Primary Radio Link Control (RLC) layer entity under a carrier aggregation duplication function (CA duplication). ### Claim 26 (depends on 19) The terminal of claim 19, wherein a carrier set configured for a logical channel corresponding to the RLC layer entity comprises a Primary Secondary Cell (PSCell); and in an aspect of triggering the communication failure process according to the configuration of the RLC layer entity, the instructions are specifically for triggering a radio link failure process of a Secondary Cell Group (SCG). ### Claim 27 (depends on 26) The terminal of claim 26, wherein that the carrier set configured for the logical channel corresponding to the RLC layer entity comprises the Primary Secondary Cell (PSCell) specifically refers to a following situation: logical channel data corresponding to the RLC layer entity is allowed to be transmitted on the PSCell, in a case that a bearer corresponding to the RLC layer entity is configured with data duplication and the data duplication is activated; or, logical channel data corresponding to the RLC layer entity is allowed to be transmitted on the PSCell, in a case that a bearer corresponding to the RLC layer entity is configured with data duplication but the data duplication is not activated; or, logical channel data corresponding to the RLC layer entity is allowed to be transmitted on the PSCell, in a case that a bearer corresponding to the RLC layer entity is not configured with data duplication. ### Claim 28 (depends on 19) The terminal of claim 19, wherein a carrier set configured for a logical channel corresponding to the RLC layer entity comprises only a Secondary Cell (SCell); and in an aspect of triggering the communication failure process according to the configuration of the RLC layer entity, the instructions are specifically for triggering reporting of a radio link failure of the SCell. ### Claim 29 A non-transitory computer-readable storage medium, wherein the computer-readable storage medium stores computer programs for electronic data interchange, wherein the computer programs enable a computer to perform a method, applied to a terminal, for processing a radio link failure comprising triggering a communication failure process according to a configuration of a Radio Link Control (RLC) layer entity, when the RLC layer entity reaches a maximum number of retransmission times; wherein a carrier set configured for a logical channel corresponding to the RLC layer entity comprises a Primary Secondary Cell (PSCell); and triggering the communication failure process according to the configuration of the RLC layer entity comprises: triggering a radio link failure process of a Secondary Cell Group (SCG); wherein the triggering the radio link failure process comprises the following steps: suspending all radio bearers except a signal radio bearer SRB0; resetting a Medium Access Control (MAC) layer; and initializing transmission of a Radio Resource Control (RRC) connection reestablishment request message.