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EP-4117334-B1 - DETERMINING QUALITY INFORMATION OF CELL

EP4117334B1EP 4117334 B1EP4117334 B1EP 4117334B1EP-4117334-B1

Inventors

  • YU, HAIFENG
  • CHEN, LEI
  • LI, BINGZHAO

Dates

Publication Date
20260506
Application Date
20200320

Claims (13)

  1. A method for determining cell quality information, wherein the method is performed by a terminal device, and the method comprises: receiving (602, 802) first information and an auxiliary parameter from a first network device, wherein the first information comprises an indication that a first cell is associated with a first synchronization signal block, SSB, and a second SSB, the first information further comprising frequency information of the first SSB associated with the first cell, and frequency information of the second SSB associated with the first cell, wherein the frequency information of the first SSB is different from the frequency information of the second SSB; and determining (603, 803) quality information of the first cell based on a measurement value of the first SSB, a measurement value of the second SSB, and based on the auxiliary parameter obtained from the first network device; and wherein the auxiliary parameter comprises a preset threshold, a coefficient of the measurement value of the first SSB, and a coefficient of the measurement value of the second SSB.
  2. The method according to claim 1, wherein that the quality information of the first cell is determined based on the measurement value of the first SSB, the measurement value of the second SSB, and an auxiliary parameter comprises: if both the measurement value of the first SSB and the measurement value of the second SSB are greater than or equal to the preset threshold, the quality information of the first cell is determined based on the coefficient of the measurement value of the first SSB, the coefficient of the measurement value of the second SSB, the measurement value of the first SSB, and the measurement value of the second SSB; or if the measurement value of the first SSB or the measurement value of the second SSB is less than the preset threshold, the quality information of the first cell is determined based on a largest measurement value in the measurement value of the first SSB and the measurement value of the second SSB.
  3. The method according to claim 1 or 2, wherein the method further comprises: receiving second information from a second network device, wherein the second information comprises a first offset and a second offset, wherein the first offset is a frequency domain offset between a frequency domain reference point and a first CRB on which a subcarrier with a smallest subcarrier number to which the first SSB is mapped is located, and the second offset is a frequency domain offset between the frequency domain reference point and a second CRB on which a subcarrier with a smallest subcarrier number to which the second SSB is mapped is located.
  4. The method according to claim 3, wherein the method further comprises: receiving third information from the second network device, wherein the third information comprises a third offset and a fourth offset, wherein the third offset is a frequency domain offset between a frequency domain lower boundary position of the first SSB and a frequency domain lower boundary position of the first CRB, and the fourth offset is a frequency domain offset between a frequency domain lower boundary position of the second SSB and a frequency domain lower boundary position of the second CRB.
  5. The method according to claim 4, wherein the method further comprises: after determining the first SSB as a serving SSB, determining the frequency domain reference point based on the first offset and the third offset; or after determining the second SSB as a serving SSB, determining the frequency domain reference point based on the second offset and the fourth offset.
  6. The method according to any one of claims 1 to 5, wherein the first cell is a cell on which the terminal device camps; or the first cell is a neighboring cell of a cell on which the terminal device camps.
  7. A method for determining cell quality information, wherein the method is performed by a first network device, and the method comprises: determining first information, wherein the first information comprises an indication that a first cell is associated with a first synchronization signal block, SSB, and a second SSB, the first information further comprising frequency information of the first SSB associated with the first cell, and frequency information of the second SSB associated with the first cell, wherein the frequency information of the first SSB is different from the frequency information of the second SSB; and sending (601, 801), to a terminal device, the first information and auxiliary parameter information, wherein the auxiliary parameter information includes a preset threshold, a coefficient of a measurement value of the first SSB, and a coefficient of a measurement value of the second SSB, and wherein the first information and auxiliary parameter information enables the terminal device to determine quality information of the first cell based on the measurement value of the first SSB, the measurement value of the second SSB and the auxiliary parameter.
  8. The method according to claim 7, wherein the method further comprises: sending second information to the terminal device, wherein the second information comprises a first offset and a second offset, wherein the first offset is a frequency domain offset between a frequency domain reference point and a first CRB on which a subcarrier with a smallest subcarrier number to which the first SSB is mapped is located, and the second offset is a frequency domain offset between the frequency domain reference point and a second CRB on which a subcarrier with a smallest subcarrier number to which the second SSB is mapped is located.
  9. The method according to claim 7 or 8, wherein the method further comprises: sending third information to the terminal device, wherein the third information comprises a third offset and a fourth offset, wherein the third offset is a frequency domain offset between a frequency domain lower boundary position of the first SSB and a frequency domain lower boundary position of the first CRB, and the fourth offset is a frequency domain offset between a frequency domain lower boundary position of the second SSB and a frequency domain lower boundary position of the second CRB.
  10. The method according to any one of claims 7 to 9, wherein the first information comprises one or more association relationship identifiers and frequency information of an SSB corresponding to each association relationship identifier, wherein frequency information of the first SSB and frequency information of the second SSB correspond to a same association relationship identifier.
  11. A communication apparatus, wherein the communication apparatus is a terminal device comprising means for performing the method according to any one of claims 1 to 6.
  12. A communication apparatus, wherein the communication apparatus is a first network device comprising means for performing the method according to any one of claims 7 to 10.
  13. A computer-readable storage medium comprising instructions which, when executed by a terminal device or a first network device, cause a processor of the terminal device to carry out the method according to any one of claims 1 to 6, or cause a processor of the first network device to carry out the method according to any one of claims 7 to 10 respectively.

Description

TECHNICAL FIELD This application relates to determining cell quality information. BACKGROUND In a 5th generation (5th generation, 5G) communication system, a terminal device may receive a synchronization signal and a synchronization signal and PBCH block (synchronization signal and PBCH block, SSB) to synchronize with a network device, obtain a system message, and the like. A primary synchronization signal (primary synchronization signal, PSS), a secondary synchronization signal (secondary synchronization signal, SSS), and a physical broadcast channel (physical broadcast channel, PBCH) constitute an SSB. Further, the network device may send SSBs by using different beams at one frequency at different time domain positions. In this manner, because the network device needs to open a transmit channel at each time domain position, energy consumption of the network device is high. To reduce the energy consumption of the network device, an energy saving solution is currently introduced. To be specific, the network device sends SSBs at a plurality of frequencies in frequency domain, so that time for which the network device needs to open a transmit channel is reduced, and energy is saved. However, in this manner, how the terminal device determines cell quality information still needs to be further studied. CN 110114998 A and counterpart WO 2019/029597 A1 disclose a method for radio resource management (RRM) measurement. The method can include receiving, by processing circuitry of a user equipment (UE), an RRM measurement configuration from a base station (BS) in a beamformed communication system. The RRM measurement configuration indicates presence of multiple quasi collocated (QCLed) frequency domain multiplexed (FDMed) reference signal (RS) transmissions in a carrier. The method can further include perform RRM measurement according to the received RRM measurement configuration using one or more of the multiple QCLed FDMed RS transmissions. SUMMARY This application provides a method for determining cell quality information and an apparatus, to improve accuracy of determining cell quality information. According to a first aspect, an embodiment of this application provides a method for determining cell quality information in accordance with appended claim 1. In this manner, after learning, based on the first information sent by the first network device, that the first cell is associated with the two SSBs, the terminal device may determine the quality information of the first cell by comprehensively considering the measurement values of the two SSBs, so that accuracy of determining the cell quality information can be effectively improved. In a possible design, that the quality information of the first cell is determined based on the measurement value of the first SSB, the measurement value of the second SSB, and an auxiliary parameter includes: If both the measurement value of the first SSB and the measurement value of the second SSB are greater than or equal to the preset threshold, the quality information of the first cell is determined based on the coefficient of the measurement value of the first SSB, the coefficient of the measurement value of the second SSB, the measurement value of the first SSB, and the measurement value of the second SSB; or if the measurement value of the first SSB or the measurement value of the second SSB is less than the preset threshold, the quality information of the first cell is determined based on a largest measurement value in the measurement value of the first SSB and the measurement value of the second SSB. In a possible design, the method further includes: receiving second information from a second network device, where the second information includes a first offset and a second offset, the first offset is a frequency domain offset between a frequency domain reference point and a first CRB on which a subcarrier with a smallest subcarrier number to which the first SSB is mapped is located, and the second offset is a frequency domain offset between the frequency domain reference point and a second CRB on which a subcarrier with a smallest subcarrier number to which the second SSB is mapped is located. In a possible design, the method further includes: receiving third information from the second network device, where the third information includes a third offset and a fourth offset, the third offset is a frequency domain offset between a frequency domain lower boundary position of the first SSB and a frequency domain lower boundary position of the first CRB, and the fourth offset is a frequency domain offset between a frequency domain lower boundary position of the second SSB and a frequency domain lower boundary position of the second CRB. In a possible design, the method further includes: after determining the first SSB as a serving SSB, determining the frequency domain reference point based on the first offset and the third offset; or after determining the second SSB as a servin