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EP-4736529-A1 - ENHANCED RELAXED MEASUREMENT

EP4736529A1EP 4736529 A1EP4736529 A1EP 4736529A1EP-4736529-A1

Abstract

Various aspects of the present disclosure relate to a UE, a base station, processors for wireless communication, methods, and computer readable medium for enhanced relaxed measurement. In an aspect, a UE receives from a base station a first configuration for relaxed measurement evaluation and a second configuration for neighbour cell measurement, wherein the second configuration includes an indication associated with the neighbour cell measurement triggering or a supplementary configuration for the relaxed measurement evaluation. The UE performs the relaxed measurement evaluation based on the first configuration and the second configuration. In this way, the UE may avoid unnecessary evaluation and ensure accurate evaluation for relaxed measurement considering network characteristics.

Inventors

  • XU, MIN
  • HAN, Jing
  • WU, Lianhai

Assignees

  • Lenovo (Beijing) Limited

Dates

Publication Date
20260506
Application Date
20230630

Claims (15)

  1. A user equipment (UE) , comprising: a processor; and a transceiver coupled to the processor, wherein the processor is configured to: receive, via the transceiver and from a base station, a first configuration for relaxed measurement evaluation and a second configuration for neighbour cell measurement, wherein the second configuration includes an indication associated with the neighbour cell measurement triggering or a supplementary configuration for the relaxed measurement evaluation; and perform the relaxed measurement evaluation based on the first configuration and the second configuration.
  2. The UE of claim 1, wherein the indication associated with the neighbor cell measurement triggering includes one of: an indication of time-based neighbour cell measurement triggering, or an indication of distance-based neighbour cell measurement triggering.
  3. The UE of claim 2, wherein the processor is further configured to: determine whether the neighbour cell measurement is required by fulfilment of a time-based criterion based on the indication of time-based neighbour cell measurement triggering; and one of the following: based on determining that the neighbour cell measurement is required by the fulfilment of the time-based criterion, ignore the relaxed measurement evaluation; or based on determining that the neighbour cell measurement is not required by the fulfilment of the time-based criterion, continue the relaxed measurement evaluation.
  4. The UE of claim 2, wherein the processor is further configured to: determine whether the neighbour cell measurement is required by a distance-based criterion based on the indication of distance-based neighbour cell measurement triggering; and one of the following: based on determining that neighbour cell measurement is required by the fulfilment of the distance-based criterion, ignore the relaxed measurement evaluation; based on determining that the neighbour cell measurement is required by the fulfilment of the distance-based criterion and a serving NTN cell for the UE is an earth-moving cell, continue the relaxed measurement evaluation; or based on determining that the neighbour cell measurement is not required by the fulfilment of the distance-based criterion, continue the relaxed measurement evaluation.
  5. The UE of claim 1, wherein the supplementary configuration for the relaxed measurement evaluation includes at least one criterion for stationary status evaluation, and the processor is configured to perform the relaxed measurement evaluation using the at least one criterion for stationary status evaluation.
  6. The UE of claim 5, wherein the at least one criterion for stationary status evaluation includes a distance-variation-based criterion indicative of one of the following: a first threshold of variation of distance from the UE to a previous UE reference location, a second threshold of the variation of distance from the UE to a serving cell reference location, a third threshold of variation of distance from the UE to a serving cell reference location minus an expected distance variation due to movement of an access node or the base station, or a fourth threshold of variation rate of distance from the UE to a serving cell reference location.
  7. The UE of claim 6, wherein performing the relaxed measurement evaluation comprises: determining the distance-variation-based criterion is fulfilled based on determining one of the following: a variation of distance from the UE to the previous UE reference location is smaller or no larger than the first threshold for once or for a certain time duration; a variation of distance from the UE to the serving cell reference location is smaller or no larger than the second threshold for once or for a certain time duration; a variation of distance from the UE to the serving cell reference location minus the expected distance variation due to movement of the access node or the base station is smaller or no larger than the third threshold for once or for a certain time duration; or a variation rate of distance from the UE to the serving cell reference location is smaller or no larger than the fourth threshold for once or for a certain time duration.
  8. The UE of claim 1, wherein the supplementary configuration for the relaxed measurement evaluation includes at least one reference RSRP update rule, and the processor is configured to perform the relaxed measurement evaluation with the at least one reference RSRP update rule.
  9. The UE of claim 8, wherein the at least one reference RSRP update rule includes one of the following: a first time duration for a guard timer; a second time duration for update of a reference RSRP; an indication of ignoring update of the reference RSRP, or an update threshold of the reference RSRP.
  10. The UE of claim 1, wherein the first configuration includes a RSRP-based stationary or low mobility criterion for relaxed measurement, and the supplementary configuration includes at least one offset for the RSRP-based stationary or low mobility criterion for relaxed measurement, and performing the relaxed measurement evaluation comprises performing stationary status evaluation based on the RSRP-based stationary or low mobility criterion with the at least one offset.
  11. A base station, comprising: a processor; and a transceiver coupled to the processor, wherein the processor is configured to: determine a first configuration for relaxed measurement evaluation and a second configuration for neighbour cell measurement, wherein the second configuration includes an indication associated with the neighbour cell measurement triggering or a supplementary configuration for the relaxed measurement evaluation; and transmit, via the transceiver, the first configuration and the second configuration to a user equipment (UE) .
  12. The base station of claim 11, wherein the indication associated with the neighbor cell measurement triggering includes one of: an indication of time-based neighbour cell measurement triggering, or an indication of distance-based neighbour cell measurement triggering.
  13. The base station of claim 11, wherein the supplementary configuration for the relaxed measurement evaluation includes at least one criterion for stationary status evaluation.
  14. The base station of claim 13, wherein the at least one criterion for stationary status evaluation includes a distance-variation-based criterion indicative of one of the following: a first threshold of variation of distance from the UE to a previous UE reference location, a second threshold of the variation of distance from the UE to a serving cell reference location, a third threshold of variation of distance from the UE to a serving cell reference location minus an expected distance variation due to movement of an access node or the base station, or a fourth threshold of variation rate of distance from the UE to a serving cell reference location.
  15. A processor for wireless communication, comprising: at least one memory; and a controller coupled with the at least one memory and configured to cause the controller to: receive, at a user equipment and from a base station, a first configuration for relaxed measurement evaluation and a second configuration for neighbour cell measurement, wherein the second configuration includes an indication associated with the neighbour cell measurement triggering or a supplementary configuration for the relaxed measurement evaluation; and perform the relaxed measurement evaluation based on the first configuration and the second configuration.

Description

ENHANCED RELAXED MEASUREMENT TECHNICAL FIELD The present disclosure relates to wireless communications, and more specifically to a user equipment (UE) , a base station, processors for wireless communication, methods, and a computer readable medium for enhanced relaxed measurement. BACKGROUND A wireless communications system may include one or multiple network communication devices, such as base stations, which may be otherwise known as an eNodeB (eNB) , a next-generation NodeB (gNB) , or other suitable terminology. Each network communication devices, such as a base station may support wireless communications for one or multiple user communication devices, which may be otherwise known as user equipment (UE) , or other suitable terminology. The wireless communications system may support wireless communications with one or multiple user communication devices by utilizing resources of the wireless communication system (e.g., time resources (e.g., symbols, slots, subframes, frames, or the like) or frequency resources (e.g., subcarriers, carriers) . Additionally, the wireless communications system may support wireless communications across various radio access technologies including third generation (3G) radio access technology, fourth generation (4G) radio access technology, fifth generation (5G) radio access technology, among other suitable radio access technologies beyond 5G (e.g., sixth generation (6G) ) . Reduced Capability (RedCap) , also known as new radio (NR) -Light, is a UE type with lower complexity introduced in 3GPP Rel-17 to support more cost-efficient devices with longer battery life, and to enable more use cases including Internet of Things (IoT ) and industry applications. One of the features specifically supported by RedCap UE is relaxed Radio Resource Management (RRM) measurement. For normal UEs in LTE or NR, RRM measurements on downlink signals broadcasted by network are performed to ensure that UE connects to the eNB/gNB with the strongest signal strength. To extend the battery life the requirements of RRM measurement can be relaxed to allow RedCap UEs to perform the measurements less frequently, e.g., when the UE is stationary and optionally not at cell edge. SUMMARY The present disclosure relates to methods, apparatuses, and systems for enhanced relaxed measurement. Embodiments of the disclosure may avoid unnecessary evaluation and ensure accurate evaluation for relaxed measurement considering network characteristics. In a first aspect, there is provided a UE. The UE comprises a processor; and a transceiver coupled to the processor, wherein the processor is configured to: receive, via the transceiver and from a base station, a first configuration for relaxed measurement evaluation and a second configuration for neighbour cell measurement, wherein the second configuration includes an indication associated with the neighbour cell measurement triggering or a supplementary configuration for the relaxed measurement evaluation; and perform the relaxed measurement evaluation based on the first configuration and the second configuration. In a second aspect, there is provided a base station. The base station comprise a processor; and a transceiver coupled to the processor, wherein the processor is configured to: determine a first configuration for relaxed measurement evaluation and a second configuration for neighbour cell measurement, wherein the second configuration includes an indication associated with the neighbour cell measurement triggering or a supplementary configuration for the relaxed measurement evaluation; and transmit, via the transceiver, the first configuration and the second configuration to a user equipment (UE) . In a third aspect, there is provided a processor for wireless communication. The a processor comprise at least one memory; and a controller coupled with the at least one memory and configured to cause the controller to: receive, at a user equipment and from a base station, a first configuration for relaxed measurement evaluation and a second configuration for neighbour cell measurement, wherein the second configuration includes an indication associated with the neighbour cell measurement triggering or a supplementary configuration for the relaxed measurement evaluation; and perform the relaxed measurement evaluation based on the first configuration and the second configuration In a fourth aspect, there is provided a processor for wireless communication. The a processor comprise at least one memory; and a controller coupled with the at least  one memory and configured to cause the controller to: determine, at a base station, a first configuration for relaxed measurement evaluation and a second configuration for neighbour cell measurement, wherein the second configuration includes an indication associated with the neighbour cell measurement triggering or a supplementary configuration for the relaxed measurement evaluation; and transmit the first configuration and t