Search

CN-122029863-A - Method and apparatus for improving radio resource management measurement efficiency

CN122029863ACN 122029863 ACN122029863 ACN 122029863ACN-122029863-A

Abstract

Systems and methods for improving Radio Resource Management (RRM) measurement efficiency are discussed herein. One or more network nodes may identify a Synchronization Signal Block (SSB) group consisting of one or more SSBs that correspond in direction to a first region covering a location of a User Equipment (UE), and send an SSB group activation message to the UE indicating that the UE activates the SSB group for measurement at the UE. The location of the UE may be determined based on, for example, location measurements of the UE, trajectories of the UE, machine Learning (ML) models, or measurement reporting results. In some cases, the one or more network nodes determine that the UE has moved to a second location, identify a second SSB group having a second one or more SSBs that correspond in direction to a second region, and send a second group activation message.

Inventors

  • LI QIMING
  • XU FANGLI
  • TANG YANG
  • CUI JIE
  • ZHANG DAWEI
  • HU HAIJING

Assignees

  • 苹果公司

Dates

Publication Date
20260512
Application Date
20231026

Claims (20)

  1. 1. A method of one or more nodes of a network, the method comprising: Identifying a first set of Synchronization Signal Blocks (SSB) comprised of a first one or more SSBs transmitted by the one or more nodes of the network that correspond in direction to a first region covering a first location of a User Equipment (UE), and And sending a first SSB group activation message to the UE, wherein the first SSB group activation message indicates the UE to activate the first SSB group.
  2. 2. The method of claim 1, further comprising sending configuration information to the UE, the configuration information defining the one or more SSBs in the first SSB group to the UE.
  3. 3. The method of claim 1, further comprising determining the location of the UE based on a location measurement of the UE.
  4. 4. The method of claim 3, wherein the positioning measurements of the UE comprise one or more of uplink time difference of arrival (UTDOA) positioning measurements, observed time difference of arrival (OTDOA) positioning measurements, and Round Trip Time (RTT) positioning measurements.
  5. 5. The method of claim 1, further comprising determining the location of the UE based on one or more of a predictable trajectory of the UE and altitude information of the UE.
  6. 6. The method of claim 1, further comprising determining the location of the UE based on a Machine Learning (ML) model.
  7. 7. The method of claim 1, further comprising determining a location of the UE based on a layer one (L1) measurement report.
  8. 8. The method of claim 7, wherein the L1 measurement report comprises an SSB-based L1 Reference Signal Received Power (RSRP) measurement report.
  9. 9. The method of claim 7, wherein the L1 measurement report comprises an L1 Reference Signal Received Power (RSRP) measurement report based on a channel state information-reference signal (CSI-RS).
  10. 10. The method of claim 1, wherein the first SSB group activation message includes a medium access control-control element (MAC-CE).
  11. 11. The method of claim 1, wherein the first SSB group activation message includes an SSB group Identifier (ID).
  12. 12. The method of claim 1, wherein the first SSB group activation message comprises a Downlink Control Information (DCI) command.
  13. 13. The method of claim 1, the method further comprising: Determining that the UE has moved to a second location; Identifying a second SSB set consisting of a second one or more SSBs transmitted by the one or more nodes of the network that correspond in direction to a second area covering a second location of the UE, and And sending a second SSB group activation message to the UE, wherein the second SSB group activation message indicates the UE to activate the second SSB group.
  14. 14. The method of claim 13, wherein the second SSB group activation message further instructs the UE to deactivate the first SSB group.
  15. 15. The method of claim 1, further comprising receiving from the UE a maximum number of active SSB groups the UE is configured to support based on one of per-frequency layer, per-frequency range, and UE.
  16. 16. A method of a User Equipment (UE), the method comprising: Receiving a first Synchronization Signal Block (SSB) group activation message from one or more nodes of a network indicating a first SSB group consisting of first one or more SSBs sent by the one or more nodes of the network in a direction corresponding to a first region covering a first location of the UE; Activating the first SSB group indicated in the first SSB group activation message, and Performing a first one or more measurements of the first one or more SSBs in the first SSB group in accordance with the activation of the first SSB group during a first SSB-based measurement timing configuration (SMTC) window, and A first measurement report based on the first one or more measurements of the first one or more SSBs in the first SSB group is transmitted to the one or more nodes of the network.
  17. 17. The method of claim 16, wherein the first SSB group activation message includes a medium access control-control element (MAC-CE).
  18. 18. The method of claim 16, wherein the first SSB group activation message includes an SSB group Identifier (ID).
  19. 19. The method of claim 16, wherein the first SSB group activation message comprises a Downlink Control Information (DCI) command.
  20. 20. The method of claim 16, the method further comprising: Receiving, from the one or more nodes of the network, a second SSB group activation message indicating a second SSB group consisting of a second one or more SSBs sent by the one or more nodes of the network that correspond in direction to a second area covering a second location of the UE; activating the second SSB group indicated in the second SSB group activation message; Performing a second one or more measurements of the second one or more SSBs in the second SSB set during a second SMTC window based on the activation of the second SSB set, and Transmitting a second measurement report based on the second one or more measurements of the second one or more SSBs in the second SSB group to the one or more nodes of the network.

Description

Method and apparatus for improving radio resource management measurement efficiency Technical Field The present application relates generally to wireless communication systems, including wireless communication systems that perform Radio Resource Management (RRM) measurements using Synchronization Signal Blocks (SSBs). Background Wireless mobile communication technology uses various standards and protocols to transmit data between a base station and a wireless communication device. For example, wireless communication system standards and protocols may include, for example, 3 rd generation partnership project (3 GPP) Long Term Evolution (LTE) (e.g., 4G), 3GPP New Radio (NR) (e.g., 5G), and Institute of Electrical and Electronics Engineers (IEEE) 802.11 standards for Wireless Local Area Networks (WLANs) (commonly referred to in the industry organization as Wi-Fi ®). As envisaged by 3GPP, different wireless communication system standards and protocols may use various Radio Access Networks (RANs) for communication between base stations of the RANs (sometimes also commonly referred to as RAN nodes, network nodes, or simply nodes) and wireless communication devices called User Equipments (UEs). The 3GPP RAN can include, for example, a Global System for Mobile communications (GSM), an enhanced data rates for GSM evolution (EDGE) RAN (GERAN), a Universal Terrestrial Radio Access Network (UTRAN), an evolved universal terrestrial radio access network (E-UTRAN), and/or a next generation radio access network (NG-RAN). Each RAN may use one or more Radio Access Technologies (RATs) to perform communications between the base stations and the UEs. For example, GERAN implements GSM and/or EDGE RATs, UTRAN implements Universal Mobile Telecommunications System (UMTS) RATs or other 3gpp RATs, e-UTRAN implements LTE RATs (sometimes abbreviated as LTE), and NG-RAN implements NR RATs (sometimes referred to herein as 5G RATs, 5G NR RATs, or abbreviated as NR). In some deployments, the E-UTRAN may also implement the NR RAT. In some deployments, the NG-RAN may also implement an LTE RAT. The base stations used by the RAN may correspond to the RAN. One example of an E-UTRAN base station is an evolved Universal terrestrial radio Access network (E-UTRAN) node B (also commonly referred to as an evolved node B, enhanced node B, eNodeB, or eNB). One example of a NG-RAN base station is a next generation node B (sometimes also referred to as a g node B or a gNB). The RAN provides communication services with external entities through its connection to a Core Network (CN). For example, E-UTRAN may utilize an Evolved Packet Core (EPC) and NG-RAN may utilize a 5G core network (5 GC). Drawings For ease of identifying a discussion of any particular element or act, one or more of the most significant digits in a reference numeral refer to the figure number that first introduces that element. Fig. 1A illustrates an example of MeasObjectNR Information Element (IE) of indication referenceSignalConfig IE. FIG. 1B illustrates an example of referenceSignalConfig IE indicating SSB-ConfigMobility IE. FIG. 1C illustrates an example of SSB-ConfigMobility IE indicating SSB-ToMeasure IE. Fig. 1D illustrates an example of SSB-ToMeasure IE indicating which SSBs to measure in an SSB-based measurement timing configuration (SMTC) measurement window. Fig. 2 illustrates an example in which multiple nodes of the network (e.g., serving cell and neighbor cell) transmit SSBs indicated in SSB-ToMeasure IE. Fig. 3 illustrates an example in which a UE has considerable measurement results on some of SSBs transmitted by a network. Fig. 4 illustrates an example of using SSB groups, each SSB group corresponding to/covering an area in which a UE may be located. Fig. 5 illustrates a first example and a second example of a UE measuring SSB during SMTC window. FIG. 6A illustrates an example of SSB-ConfigMobility IE, indicated ssbGroup-ToMeasure IE. Fig. 6B illustrates an example of ssbGroup-ToMeasure IE further indicating ssbgroupID fields and ssb-ToMeasure fields. Fig. 7 illustrates a method of one or more nodes of a network according to embodiments herein. Fig. 8 illustrates a method of a UE according to embodiments herein. Fig. 9 illustrates a method of one or more nodes of a network according to embodiments herein. Fig. 10 illustrates a method of a UE according to embodiments herein. Fig. 11 illustrates an example architecture of a wireless communication system in accordance with embodiments disclosed herein. Fig. 12 illustrates a system for performing signaling between a wireless device and a network device in accordance with embodiments disclosed herein. Detailed Description Various embodiments are described in terms of a UE. However, references to UEs are provided for illustrative purposes only. Example embodiments may be used with any electronic component that may establish a connection with a network and that is configured with hardware, software, and/or firmware for exchang