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EP-4742731-A1 - CELL MEASUREMENT METHOD AND APPARATUS, DEVICE, AND STORAGE MEDIUM

EP4742731A1EP 4742731 A1EP4742731 A1EP 4742731A1EP-4742731-A1

Abstract

Provided is a method and apparatus for cell measurement, relating to the technical field of wireless communications. The method is performed by a terminal and includes: performing (401) cell measurement for at least two satellite cells with a same synchronization signal/physical broadcast channel, PBCH, block, SSB, measurement time configuration, SMTC, based on measurement priorities of the at least two satellite cells.

Inventors

  • HU, Rongyi
  • ZHANG, JINYU

Assignees

  • GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.

Dates

Publication Date
20260513
Application Date
20230707

Claims (20)

  1. A method for cell measurement, performed by a terminal, the method comprising: performing cell measurement for at least two satellite cells associated with a same synchronization signal/physical broadcast channel (PBCH) block (SSB) measurement time configuration (SMTC) based on measurement priorities of the at least two satellite cells.
  2. The method according to claim 1, wherein performing the cell measurement based on the measurement priorities of the at least two satellite cells comprises: determining at least one SMTC offset, wherein each of the at least one SMTC offset is associated with at least one of the at least two satellite cells; performing, in sequence based on the measurement priorities of the satellite cells associated with the at least one SMTC offsets, cell measurement for the satellite cells based on the at least one SMTC offset.
  3. The method according to claim 2, wherein determining the at least one SMTC offset comprises: determining an SMTC offset of each of top N1 satellite cells from the at least two satellite cells arranged in a descending order of measurement priorities as the at least one SMTC offset.
  4. The method according to claim 3, wherein an SMTC offset of a first satellite cell and an SMTC offset of a second satellite cell in the at least two satellite cells are the same; and in a case where the first satellite cell belongs to the top N1 satellite cells but the second satellite cell does not belong to the top N1 satellite cells, the method further comprises: performing, during cell measurement based on the SMTC offset of the first satellite cell, cell measurement for the second satellite cell while preferentially measuring the first satellite cell.
  5. The method according to claim 4, wherein performing, during the cell measurement based on the SMTC offset of the first satellite cell, the cell measurement for the second satellite cell in the case where the measurement is preferentially performed for the first satellite cell comprises performing, in a case where the cell measurement for the second satellite cell does not impact a time used for the cell measurement during the cell measurement based on the SMTC offset of the first satellite cell, the cell measurement for the second satellite cell while preferentially measuring the first satellite cell.
  6. The method according to any one of claims 3 to 5, N1 satisfies at least one of the following conditions: N1 is determined by a capability of the terminal; N1 is determined by a network configuration; N1 is separately determined regarding each frequency point; or N1 is shared by several frequencies.
  7. The method according to claim 2, wherein determining the at least one SMTC offset comprises: determining top N2 SMTC offsets from the SMTC offsets of the at least two satellite cells arranged in a descending order of the measurement priorities associated with the satellite cells as the at least one SMTC offset.
  8. The method according to claim 7, wherein performing, in sequence based on the measurement priorities of the satellite cells associated with the at least one SMTC offsets, the cell measurement for the satellite cells based on the at least one SMTC offset comprises: performing cell measurement for at most N3 satellite cells in the satellite cells associated with each SMTC offset of the at least one SMTC offset; wherein a value of N3 is determined by an upper limit of a number of cells simultaneously measured by the terminal and a duration for cell measurement within one SMTC period.
  9. The method according to claim 7 or claim 8, wherein N2 satisfies at least one of the following conditions: N2 is determined by a capability of the terminal; N2 is determined by a network configuration; N2 is separately determined regarding each frequency point; or N2 is shared by a plurality of frequencies.
  10. The method according to any one of claims 3 to 9, wherein a duration for cell measurement is determined by a time scaling factor; wherein the time scaling factor is determined based on a sum of number of satellite cells respectively associated with at least one SMTC offset and a number of satellite cells allowed to be simultaneously measured by the terminal.
  11. The method according to claim 2, wherein determining the at least one SMTC offset comprises: determining respective SMTC offsets of the at least two satellite cells as the at least one SMTC offset.
  12. The method according to claim 11, wherein a time used for cell measurement comprises: a product of a basic measurement time and a number of measurement groups; or a product of a basic measurement time, a number of measurement groups, and a first scaling factor, wherein the first scaling factor is a maximum value of scaling factors respectively associated with the at least one SMTC offset, wherein the scaling factor associated with the SMTC offset is determined by a number of satellite cells associated with the SMTC offset and a number of satellite cells allowed to be simultaneously measured by the terminal; or a sum of measurement times respectively associated with the at least one SMTC offset, wherein the measurement time associated with the SMTC offset is a product of a basic measurement duration and a scaling factor associated with the SMTC offset.
  13. The method according to any one of claims 1 to 12, wherein the measurement priorities of the at least two satellite cells are determined based on at least one of: a descending order of respective physical cell identifiers (PCI) of the at least two satellite cells; an ascending order of respective PCIs of the at least two satellite cells; a descending order of respective SMTC offsets of the at least two satellite cells; an ascending order of respective SMTC offsets of the at least two satellite cells; a configuration order of the at least two satellite cells in a neighboring cell list; a descending order of a number of cells in a cell group to which each of the at least two satellite cells belongs, wherein the cell group is acquired by organizing the at least two satellite cells based on their respective SMTC offsets; an ascending order of a number of cells in a cell group to which each of the at least two the satellite cell belongs; or priorities of the at least two cells configured by a network.
  14. The method according to claim 13, wherein the neighboring cell list comprises: a neighboring cell list configured on an associated frequency point in a SIB 3; or a neighboring cell list configured on an associated frequency point in a SIB 4; or a PCI list in an SMTC; or a neighboring cell list configured in a SIB 19.
  15. The method according to claim 13 or 14, wherein network-configured priorities of the at least two satellite cells comprise: priorities configured for the at least two satellite cells in a SIB 3; or priorities configured for the at least two satellite cells in a SIB 4; or priorities configured for the at least two satellite cells in a SIB 19; or priorities configured for the at least two satellite cells in a PCI list in an SMTC.
  16. An apparatus for cell measurement, comprising: a measuring module, configured to perform cell measurement for at least two satellite cells associated with a same synchronization signal/physical broadcast channel (PBCH) block (SSB) measurement time configuration (SMTC) based on measurement priorities of the at least two satellite cells.
  17. A computer device, comprising: a processor, a memory, and a transceiver; wherein the memory stores one or more computer programs, wherein the processor, when loading and running the one or more computer programs, is caused to perform the method for cell measurement as defined any one of the claims 1 to 15.
  18. A computer-readable storage medium storing one or more computer programs, wherein a processor executes the one or more computer programs to perform the method for cell measurement as defined in any one of the claims 1 to 15.
  19. A chip, comprising: programmable electric logic circuitry and/or one or more programs, wherein the chip, when running on a computer device, is configured to cause the computer device to perform the method for cell measurement as defined in any of the claims 1 to 15.
  20. A computer program, wherein the computer program, when called and run by a processor, causes the processor to perform the method for cell measurement as defined in any of the claims 1 to 15.

Description

TECHNICAL FIELD Embodiments of the present disclosure relate to the technical field of communications, and in particular, relate to a method and apparatus for cell measurement, and a device and a storage medium therefor. RELATED ART In a mobile communication system, a terminal needs to measure signal strength and signal quality of a current cell and neighboring cells in order to perform handover or increase carrier components in a timely manner. Synchronization signal/physical broadcast channel (PBCH) block (SSB) measurement timing configuration (SMTC) is a set of configuration information for measurement time windows for an SSB measurement, and the terminal may perform cell measurement based on the SMTC. SUMMARY Embodiments of the present disclosure provide a method and apparatus for cell measurement, and a device and storage medium therefor. The technical solutions are as follows: According to one aspect of the embodiments of the present disclosure, a method for cell measurement is provided. The method is performed by a terminal, and includes: performing cell measurement for at least two satellite cells associated with a same SMTC based on measurement priorities of the at least two satellite cells. According to another aspect of the embodiments of the present disclosure, an apparatus for cell measurement is provided. The apparatus includes: a measuring module, configured to perform cell measurement for at least two satellite cells associated with a same SMTC based on measurement priorities of the at least two satellite cells. According to another aspect of the embodiments of the present disclosure, a computer device is provided. The computer device includes a processor, a memory, and a transceiver. The memory stores one or more computer programs, wherein the processor, when loading and running the one or more computer programs, is caused to perform the method for cell measurement as described above. According to another aspect of the embodiments of the present disclosure, a computer-readable storage medium is provided. The computer-readable storage medium stores one or more computer programs, wherein the one or more computer programs, when loaded and run by a processor, cause the processor to perform the method for cell measurement as described above. According to another aspect of the embodiments of the present disclosure, a computer program product or computer program including one or more computer instructions is provided. The one or more computer instructions are stored in the computer-readable storage medium, and when called and executed by a processor, cause the processor to perform the method for cell measurement as described above. The technical solutions according to the embodiments of the present disclosure may achieve the following beneficial effects: In the NTN network, the terminal may measure a plurality of satellite cells associated with the same SMTC based on the measurement priorities of the plurality of satellite cells, such that the satellite cells with high priorities are measured first, thereby achieving effective cell measurement. BRIEF DESCRIPTION OF DRAWINGS For clearer descriptions of the technical solutions according to the embodiments of the present disclosure, the following briefly illustrates drawings required for the description of the embodiments. Obviously, the illustrated drawings below are only some embodiments of the present disclosure. For ordinary persons skilled in the art, other drawings may be obtained based on these drawings without the premise of creative labor. FIG. 1 is a schematic diagram of a network architecture according to some embodiments of the present disclosure;FIG. 2 is a schematic network diagram of an NTN system according to some embodiments of the present disclosure;FIG. 3 is a schematic diagram of an SMTC window offset involved in the present disclosure;FIG. 4 is a schematic flowchart of a method for cell measurement according to some embodiments of the present disclosure;FIG. 5 is a schematic flowchart of a method for cell measurement according to some embodiments of the present disclosure;FIG. 6 is a schematic flowchart of a method for cell measurement according to some embodiments of the present disclosure;FIG. 7 is a schematic flowchart of a method for cell measurement according some embodiments of the present disclosure;FIG. 8 is a schematic flowchart of a method for cell measurement according some embodiments of the present disclosure;FIG. 9 is a block diagram of an apparatus for cell measurement according to some embodiments of the present disclosure; andFIG. 10 is a schematic structural diagram of a computer device according to some embodiments of the present disclosure. DETAILED DESCRIPTION For clearer descriptions of the objectives, technical solutions, and advantages of the present disclosure, the embodiments of the present disclosure are described in detail hereinafter in conjunction with the accompanying drawings. The network architect