IP Library › Granted Patent US 12,556,448
Granted Patent B2
US 12,556,448 · App. 18/632,891 · Granted Feb 17, 2026

Optimized reconfiguration of RLM and beam monitoring parameters

Inventors: Icaro L. J. Da Silva (Solna, SE); Claes Tidestav (Bålsta, SE); Helka-Liina Määttänen (Espoo, FI)
Assignee: Telefonaktiebolaget LM Ericsson (publ)
H04L41/0823H04L5/0007H04L5/0048H04L41/0813H04W24/08H04W56/001
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 12,556,448
App. No.
18/632,891
Granted
Feb 17, 2026
Kind
B2
Abstract

Disclosed herein is a method performed by a wireless device for optimized reconfiguration of radio link monitoring, RLM, and beam monitoring. The method includes receiving, from a first network node, a first message comprising at least one RLM parameter related to at least one reference signal. The method further includes receiving, from the first network node, a second message comprising a bitmap indicating activation of at least one RLM parameter associated with the first message. The method additionally includes monitoring one or more reference signals based on the first message and the second message.

Claims (40)

1 . A method performed by a wireless device for radio link monitoring, RLM, the method comprising:

receiving, from a first network node, a first message comprising at least one RLM parameter related to at least one reference signal, the first message being a radio resource control (RRC) message;

receiving, from the first network node, a second message comprising a bitmap indicating activation of at least one RLM parameter associated with the first message, wherein the bitmap is comprised in a medium access control (MAC) control element (CE) of the second message; and

monitoring one or more reference signals based on the first message and the second message.

2 . The method of claim 1 , wherein:

the at least one RLM parameter comprises a first RLM parameter and a second RLM parameter,

the first RLM parameter being associated with a first set of reference signal resources,

the second RLM parameter being associated with a second set of reference signal resources, and

the second set of reference signal resources is different from the first set of reference signal resources.

3 . The method of claim 2 , wherein each of the first set of reference signal resources and the second set of reference signal resources are less than a number of reference signal resources providing coverage of a cell.

4 . The method of claim 1 , wherein the at least one reference signal resource comprises at least one synchronization signal block, SSB, or at least one channel state information-reference signal, CSI-RS.

5 . The method of claim 1 , further comprising, in response to receiving the second message, refraining from monitoring one or more other reference signals based on the first message and the second message.

6 . A wireless device for radio link monitoring, RLM, the wireless device comprising:

memory storing instructions; and

processing circuitry operable to execute the instructions to cause the wireless device to:

receive, from a first network node, a first message comprising at least one RLM parameter related to at least one reference signal, the first message being a radio resource control (RRC) message;

receive, from the first network node, a second message comprising a bitmap indicating activation of at least one RLM parameter associated with the first message wherein the bitmap is comprised in a medium access control (MAC) control element (CE) of the second message; and

monitor one or more reference signals based on the first message and the second message.

7 . The wireless device of claim 6 , wherein:

the at least one RLM parameter comprises a first RLM parameter and a second RLM parameter,

the first RLM parameter being associated with a first set of reference signal resources,

the second RLM parameter being associated with a second set of reference signal resources, and

the second set of reference signal resources is different from the first set of reference signal resources.

8 . The wireless device of claim 7 , wherein each of the first set of reference signal resources and the second set of reference signal resources are less than a number of reference signal resources providing coverage of a cell.

9 . The wireless device of claim 6 , wherein the at least one reference signal resource comprises at least one synchronization signal block, SSB, or at least one channel state information-reference signal, CSI-RS.

10 . The wireless device of claim 6 , wherein the processing circuitry is further operable to execute instructions to cause the wireless device to, in response to receiving the second message, refrain from monitoring one or more other reference signals based on the first message and the second message.

11 . A network node for radio link monitoring, RLM, the network node comprising:

memory storing instructions; and

processing circuitry operable to execute the instructions to cause the network node to:

transmit, to a wireless device, a first message comprising at least one RLM parameter related to at least one reference signal, the first message being a radio resource control (RRC) message;

transmitting, to the wireless device, a second message comprising a bitmap indicating activation of at least one RLM parameter associated with the first message wherein the bitmap is comprised in a medium access control (MAC) control element (CE) of the second message;

transmitting a plurality of reference signals wherein the plurality of reference signals comprises at least one reference signal to be monitored by the wireless device based on the first message and the second message.

12 . The network node of claim 11 , wherein:

the at least one RLM parameter comprises a first RLM parameter and a second RLM parameter,

the first RLM parameter being associated with a first set of reference signal resources,

the second RLM parameter being associated with a second set of reference signal resources, and

the second set of reference signal resources is different from the first set of reference signal resources.

13 . The network node of claim 12 , wherein each of the first set of reference signal resources and the second set of reference signal resources are less than a number of reference signal resources providing coverage of a cell.

14 . The network node of claim 11 , wherein the at least one reference signal resource comprises at least one synchronization signal block, SSB, or at least one channel state information-reference signal, CSI-RS.

15 . The network node of claim 11 , wherein the plurality of reference signals comprises at least one reference signal that is not to be monitored by the wireless device based on the first message and the second message.

Continuity (4)
Continuation 18109112 · Feb 13, 2023
Continuation 16970624
Provisional Application 62710466 · Feb 16, 2018
Related Publication 20240275672A1 · Aug 15, 2024
References Cited (23)
US 11582103B2 · Da Silva · 2023 [cited by examiner]
US 11985031B2 · Da Silva · 2024 [cited by examiner]
US 20170127309A1 · Siomina · 2017 [cited by examiner]
US 20180007574A1 · Park et al. · 2018 [cited by applicant]
US 20180027424A1 · Chen et al. · 2018 [cited by applicant]
US 20180034525A1 · Park et al. · 2018 [cited by applicant]
US 20190132157A1 · Hosseini · 2019 [cited by examiner]
US 20200015097A1 · Kazmi · 2020 [cited by examiner]
US 20200280417A1 · Lindoff · 2020 [cited by examiner]
CN 105612786A · 2016 [cited by applicant]
CN 105934973A · 2016 [cited by applicant]
GB 2507570A · 2014 [cited by applicant]
RU 2623736C2 · 2017 [cited by applicant]
WO WO2014068535A2 · 2014 [cited by examiner]
WO 2017197264A1 · 2017 [cited by applicant]
WO 2018027886A1 · 2018 [cited by applicant]
“3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA); Medium Access Control (MAC) protocol specification (Release 15)”, 3GPP TS 36.… [cited by applicant]
“3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA); Medium Access Control (MAC) protocol specification (Release 15)”, 3GPP TS 36.… [cited by applicant]
Ericsson, “Remaining details for radio link monitoring”, 3GPP TSG RAN WG1 Meeting #92, R1-1802948, Feb. 26-Mar. 2, 2018, 6 Pages, Athens, Greece. [cited by applicant]
Ericsson, “RRC Configuration and Re-configuration of RLM parameters (E396)”, 3GPP TSG-RAN WG2 AH-1801, R2-1802778, Jan. 22-26, 2018, 8 Pages, Vancouver, Canada. [cited by applicant]
Ericsson, “Remaining details on radio link monitoring”, 3GPP TSG RAN WG1 Meeting AH 1801, R1-1800900, Jan. 22-26, 2018, 6 Pages, Vancouver, Canada. [cited by applicant]
Intel Corporation, “Summary of Tuesday offline discussion for NR Radio Link Monitoring”, 3GPP TSG RAN WG1 Meeting #91, R1-1721375, Nov. 27-Dec. 1, 2017, 5 Pages, Reno, Nevada, USA. [cited by applicant]
Samsung, “Use of CSI RS based measurements in connected”, 3GPP TSG-RAN WG2 Meeting #97-bis, Tdoc R2-1703257, Apr. 3-7, 2017, 5 Pages, Spokane, US. [cited by applicant]