IP Library › Granted Patent US 12,445,884
Granted Patent B2
US 12,445,884 · App. 17/759,796 · Granted Oct 14, 2025

Radio resource management relaxation for radio resource control connected mode

Inventors: Jie Cui (San Jose, CA); Dawei Zhang (Saratoga, CA); Hong He (San Jose, CA); Huaning Niu (San Jose, CA); Manasa Raghavan (Sunnyvale, CA); Qiming Li (Beijing, CN); Xiang Chen (Campbell, CA); Yang Tang (San Jose, CA)
Assignee: Apple Inc.
H04W24/10H04B17/328H04W76/20H04W76/30
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Quick Facts
Patent No.
US 12,445,884
App. No.
17/759,796
Granted
Oct 14, 2025
Kind
B2
Abstract

A user equipment (UE) is configured to receive a measurement configuration from a serving cell, wherein the measurement configuration comprises event configuration associated with radio resource management (RRM) relaxation, perform measurements of the serving cell, transmit a measurement report to the serving cell and receive an indication from the serving cell that RRM relaxation for radio resource control (RRC) connected mode is enabled at the UE.

Claims (46)

1. A processor of a reduced capability (redcap) user equipment (UE) configured to perform operations comprising:

receiving a measurement configuration from a serving cell, wherein the measurement configuration comprises event configuration associated with radio resource management (RRM) relaxation for a radio resource control (RRC) connected mode;

performing measurements of the serving cell;

determining whether the event configuration associated with the RRM relaxation for the RRC connected mode has been satisfied based on the measurements;

when the event configuration associated with the RRM relaxation for the RRC connected mode has been satisfied, generating one or more RRC messages to be transmitted to the serving cell, the one or more RRC messages comprising a measurement report and an explicit indication that RRM relaxation criterion has been fulfilled; and

receiving an indication from the serving cell that the RRM relaxation for the RRC connected mode is enabled at the redcap UE.

2. The processor of claim 1 , wherein the measurement report comprises one or more of a stationary mobility status for the redcap UE and a not-at-cell edge status for the redcap UE.

3. The processor of claim 1 , the operations further comprising:

transmitting, after RRM relaxation for RRC connected mode is enabled, a second measurement report to the serving cell, wherein the second measurement report comprises an event ID associated with disabling RRM relaxation for RRC connected mode.

4. The processor of claim 1 , the operations further comprising:

transmitting, after RRM relaxation for RRC connected mode is enabled, a second measurement report to the serving cell, wherein the second measurement report comprises one or more of a leave stationary mobility status for the redcap UE and a leave not-at-cell edge status for the redcap UE.

5. The processor of claim 1 , the operations further comprising:

transmitting, after RRM relaxation for RRC connected mode is enabled, a second measurement report to the serving cell, wherein the second measurement report comprises a type of RRM relaxation scheme to be disabled at the redcap UE.

6. A reduced capability (redcap) user equipment (UE), comprising:

a transceiver configured to communicate with a serving cell; and

a processor communicatively coupled with the transceiver and configured to perform operations comprising:

receiving a measurement configuration from the serving cell, wherein the measurement configuration comprises event configuration associated with radio resource management (RRM) relaxation for a radio resource control (RRC) connected mode;

performing measurements of the serving cell;

determining whether the event configuration associated with the RRMN relaxation for RRC connected mode has been satisfied based on the measurements;

when the event configuration associated with the RRM relaxation for the RRC connected mode has been satisfied, generating one or more RRC messages to be transmitted to the serving cell, the one or more RRC messages comprising a measurement report and an explicit indication that RRM relaxation criterion has been fulfilled; and

receiving an indication from the serving cell that the RRM relaxation for the RRC connected mode is enabled at the redcap UE.

7. The UE of claim 6 , wherein the measurement report comprises one or more of a stationary mobility status for the redcap UE and a not-at-cell edge status for the redcap UE.

8. The UE of claim 6 , the operations further comprising:

transmitting, after RRM relaxation for RRC connected mode is enabled, a second measurement report to the serving cell, wherein the second measurement report comprises an event ID associated with disabling RRM relaxation for RRC connected mode.

9. The UE of claim 6 , the operations further comprising:

transmitting, after RRM relaxation for RRC connected mode is enabled, a second measurement report to the serving cell, wherein the second measurement report comprises one or more of a leave stationary mobility status for the redcap UE and a leave not-at-cell edge status for the redcap UE.

10. The UE of claim 6 , the operations further comprising:

transmitting, after RRM relaxation for RRC connected mode is enabled, a second measurement report to the serving cell, wherein the second measurement report comprises a type of RRM relaxation scheme to be disabled at the redcap UE.

11. A method, comprising:

receiving a measurement configuration from a serving cell, wherein the measurement configuration comprises event configuration associated with radio resource management (RRM) relaxation for a radio resource control (RRC) connected mode;

performing measurements of the serving cell;

determining whether the event configuration associated with the RRM relaxation for RRC connected mode has been satisfied based on the measurements;

when the event configuration associated with the RRM relaxation for the RRC connected mode has been satisfied, transmitting one or more RRC messages to the serving cell, the one or more RRC messages comprising a measurement report and an explicit indication that RRM relaxation criterion has been fulfilled; and

receiving an indication from the serving cell that the RRM relaxation for RRC connected mode is enabled at a redcap UE.

12. The method of claim 11 , wherein the report comprises one or more of a stationary mobility status for the redcap UE and a not-at-cell edge status for the redcap UE.

13. The method of claim 11 , the operations further comprising:

transmitting, after RRM relaxation for RRC connected mode is enabled, a second measurement report to the serving cell, wherein the second measurement report comprises an event ID associated with disabling RRM relaxation for RRC connected mode.

14. The method of claim 11 , the operations further comprising:

transmitting, after RRM relaxation for RRC connected mode is enabled, a second measurement report to the serving cell, wherein the second measurement report comprises one or more of a leave stationary mobility status for the redcap UE and a leave not-at-cell edge status for the redcap UE.

15. The method of claim 11 , the operations further comprising:

transmitting, after RRM relaxation for RRC connected mode is enabled, a second measurement report to the serving cell, wherein the second measurement report comprises a type of RRM relaxation scheme to be disabled at the redcap UE.

16. The method of claim 11 , wherein the RRM relaxation for RRC connected mode comprises applying a scaling factor to a discontinuous reception (DRX) cycle periodicity.

17. The processor of claim 1 , wherein RRM relaxation for RRC connected mode comprises applying a scaling factor to a discontinuous reception (DRX) cycle periodicity.

18. The processor of claim 1 , wherein RRM relaxation for RRC connected mode comprises applying a scaling factor to a measurement gap repetition period (MGRP).

19. The UE of claim 6 , wherein RRM relaxation for RRC connected mode comprises applying a scaling factor to a discontinuous reception (DRX) cycle periodicity.

20. The UE of claim 6 , wherein RRM relaxation for RRC connected mode comprises applying a scaling factor to a measurement gap repetition period (MGRP).

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 29, 2022
From: CUI, JIE; LI, QIMING; ZHANG, DAWEI; HE, HONG; NIU, HUANING; RAGHAVAN, MANASA; CHEN, XIANG; TANG, YANG
To: APPLE INC.
Reel/Frame 060675/0076 →
Continuity (1)
Related Publication 20240187901A1 · Jun 6, 2024
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