# US 11,115,267 B2 · Method and device for radio link monitoring > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,115,267 B2 - Document ID: US11115267B2 - Status: Granted - Kind: B2 - Application number: 16/346,183 - Filed: 2017-10-30 - Published: 2020-02-20 - Granted: 2021-09-07 - Earliest claimed: 2016-11-04 - Assignees: Telefonaktiebolaget LM Ericsson (publ) - Applicants: Telefonaktiebolaget LM Ericsson (publ) - Inventors: Jinhua Liu; Rui Fan - Web page: https://patentgrep.com/patent/US11115267B2 ## CPC - H04W 24/08: Testing, {supervising or monitoring} using real traffic - H04L 41/0806: for initial configuration or provisioning, e.g. plug-and-play - H04L 43/08: Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters - H04W 76/27: Transitions between radio resource control [RRC] states - H04W 76/28: Discontinuous transmission [DTX]; Discontinuous reception [DRX] - 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 Systems and methods are disclosed that relate to applying traffic type or network slice specific configuration for Radio Link Monitoring (RLM) in New Radio Access Technology (NR) for multiple service providing. There are multiple configurations for multiple services (or service sets)/networks slices, the configuration including the out-of-sync evaluation period and the in-sync evaluation period, the thresholds for out-of-sync evaluation and in-sync evaluation, and the associated counter values and timers. The method for RLM configuration of coexisting multiple services is also disclosed. ## Claims ### Claim 1 A method of a network node for providing Radio Link Monitoring, RLM, in New Radio, NR, Access Technology, comprising: providing, to a wireless device, a plurality of RLM configurations for a respective plurality of service sets or network slices, wherein: each of the plurality of service sets or network slices comprises one or more services associated with a respective set of Quality of Service, QoS, requirements; and the plurality of RLM configurations comprises an RLM configuration corresponding to an Ultra-Reliable and Low Latency Communication (URLLC) service set; wherein, for each service set or network slice, the respective RLM configuration comprises at least one of: a maximum counter value of out-of-sync and a value of a timer triggered by radio link failure. ### Claim 2 (depends on 1) The method of claim 1 wherein, for each service set or network slice, the respective RLM configuration further comprises at least one of: a configuration of an out-of-sync evaluation period and a threshold to determine out-of-sync, an in-sync evaluation period and a threshold to determine in-sync, and a value of a timer triggered by out-of-sync. ### Claim 3 (depends on 1) The method of claim 1 wherein providing the plurality of RLM configurations to the wireless device comprises providing the plurality of RLM configurations to the wireless device via dynamic signaling or system information. ### Claim 4 (depends on 1) The method of claim 1 wherein each RLM configuration of the plurality of RLM configurations for each respective service set or network slice of the plurality of service sets or network slices is conditionally determined. ### Claim 5 (depends on 1) The method of claim 1 wherein the plurality of service sets are conditionally configured. ### Claim 6 A method of a network node for providing Radio Link Monitoring, RLM, in New Radio, NR, Access Technology, comprising: selecting, based on one or more services or one or more network slices used by a wireless device, one or more RLM configurations from a plurality of RLM configurations for a respective plurality of service sets or network slices, wherein: each of the plurality of service sets or network slices comprises one or more services associated with a respective set of Quality of Service, QoS, requirements; and the plurality of RLM configurations comprises an RLM configuration corresponding to an Ultra-Reliable and Low Latency Communication (URLLC) service set; and providing the one or more selected RLM configurations to the wireless device; wherein, for each service set or network slice, the respective RLM configuration comprises at least one of: a maximum counter value of out-of-sync and a value of a timer triggered by radio link failure. ### Claim 7 (depends on 6) The method of claim 6 wherein, for each service set or network slice, the respective RLM configuration further comprises at least one of: a configuration of an out-of-sync evaluation period and a threshold to determine out-of-sync, an in-sync evaluation period and a threshold to determine in-sync, and a value of a timer triggered by out-of-sync. ### Claim 8 (depends on 6) The method of claim 6 wherein providing the one or more selected RLM configurations to the wireless device comprises providing the one or more selected RLM configurations to the wireless device via dynamic signaling. ### Claim 9 (depends on 6) The method of claim 6 wherein each RLM configuration of the plurality of RLM configurations for each respective service set or network slice of the plurality of service sets or network slices is conditionally determined. ### Claim 10 (depends on 6) The method of claim 6 wherein the plurality of service sets are conditionally configured. ### Claim 11 A method of a wireless device for performing Radio Link Monitoring, RLM, in New Radio, NR, access technology, comprising: selecting, based on one or more services or one or more network slices used by the wireless device, one or more RLM configurations from a plurality of RLM configurations for a respective plurality of service sets or network slices, wherein: each of the plurality of service sets or network slices comprises one or more services associated with a respective set of Quality of Service, QoS, requirements; and the plurality of RLM configurations comprises an RLM configuration corresponding to an Ultra-Reliable and Low Latency Communication (URLLC) service set; and utilizing the one or more selected RLM configurations for RLM at the wireless device; wherein, for each service set or network slice, the respective RLM configuration comprises at least one of: a maximum counter value of out-of-sync and a value of a timer triggered by radio link failure. ### Claim 12 (depends on 11) The method of claim 11, further comprising receiving, from a network node, the plurality of RLM configurations for the respective plurality of service sets or network slices. ### Claim 13 (depends on 12) The method of claim 12 wherein receiving the plurality of RLM configurations for the respective plurality of service sets or network slices comprises receiving the plurality of RLM configurations for the respective plurality of service sets or network slices via dynamic signaling. ### Claim 14 (depends on 11) The method of claim 11 wherein, for each service set or network slice, the respective RLM configuration further comprises at least one of: a configuration of an out-of-sync evaluation period and a threshold to determine out-of-sync an in-sync evaluation period and a threshold to determine in-sync, and a value of a timer triggered by out-of-sync. ### Claim 15 (depends on 11) The method of claim 11 wherein each RLM configuration of the plurality of RLM configurations for each respective service set or network slice of the plurality of service sets or network slices is conditionally determined. ### Claim 16 (depends on 11) The method of claim 11 wherein the plurality of service sets are conditionally determined. ### Claim 17 (depends on 11) The method of claim 11 wherein the one or more selected RLM configurations comprise two or more RLM configurations, and utilizing the one or more selected RLM configurations for RLM at the wireless device comprises utilizing the two or more RLM configurations separately; or wherein the one or more selected RLM configurations comprises two or more RLM configurations, and utilizing the one or more selected RLM configurations for RLM at the wireless device comprises: selecting one of the two or more RLM configurations based on at least one metric; and utilizing the one of the two or more RLM configurations. ### Claim 18 A method of a wireless device for performing Radio Link Monitoring, RLM, in New Radio, NR, Access Technology, comprising: receiving, from a network node, one or more select RLM configurations from a plurality of RLM configurations, the plurality of RLM configurations being for a respective plurality of service sets or network slices, wherein: each of the plurality of service sets or network slices comprises one or more services associated with a respective set of Quality of Service, QoS, requirements; and the plurality of RLM configurations comprises an RLM configuration corresponding to an Ultra-Reliable and Low Latency Communication (URLLC) service set; and utilizing the one or more select RLM configurations for RLM at the wireless device; wherein, for each service set or network slice, the respective RLM configuration comprises at least one of: a maximum counter value of out-of-sync and a value of a timer triggered by radio link failure. ### Claim 19 (depends on 18) The method of claim 18 wherein, for each service set or network slice, the respective RLM configuration further comprises at least one of: a configuration of an out-of-sync evaluation period and a threshold to determine out-of-sync an in-sync evaluation period and a threshold to determine in-sync, and a value of a timer triggered by out-of-sync. ### Claim 20 (depends on 18) The method of claim 18 wherein receiving the one or more selected RLM configurations comprises receiving the one or more selected RLM configurations via dynamic signaling. ### Claim 21 (depends on 18) The method of claim 18 wherein the plurality of RLM configurations for the plurality of service sets or network slices are conditionally determined. ### Claim 22 (depends on 18) The method of claim 18 wherein the plurality of service sets are conditionally determined. ### Claim 23 (depends on 18) The method of claim 18 wherein the one or more select RLM configurations comprise two or more select RLM configurations, and utilizing the one or more select RLM configurations for RLM at the wireless device comprises utilizing the two or more select RLM configurations separately; or wherein the one or more select RLM configurations comprise two or more select RLM configurations, and utilizing the one or more select RLM configurations for RLM at the wireless device comprises: selecting one of the two or more select RLM configurations based on at least one metric; and utilizing the one of the two or more select RLM configurations.