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US-20260129498-A1 - APPARATUS AND METHOD OF WIRELESS COMMUNICATION

US20260129498A1US 20260129498 A1US20260129498 A1US 20260129498A1US-20260129498-A1

Abstract

A method of wireless communication of a user equipment (UE) includes that: a request to measure one or more offset values between a first reference signal (RS) associated with a first transmission/reception point (TRP) and a second RS associated with a second TRP is received from a base station, and a measurement report is transmitted to the base station, wherein the measurement report indicates the one or more offset values between the first RS associated with the first TRP and the second RS associated with the second TRP.

Inventors

  • Li Guo

Assignees

  • GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.

Dates

Publication Date
20260507
Application Date
20260102

Claims (20)

  1. 1 . A method of wireless communication of a user equipment (UE), comprising: receiving a request to measure one or more offset values between a first reference signal (RS) associated with a first transmission/reception point (TRP) and a second RS associated with a second TRP from a base station; and transmitting a measurement report to the base station, wherein the measurement report indicates the one or more offset values between the first RS associated with the first TRP and the second RS associated with the second TRP.
  2. 2 . The method of claim 1 , further comprising: measuring the first RS associated with the first TRP and the second RS associated with the second TRP.
  3. 3 . The method of claim 1 , further comprising: calculating the one or more offset values between the first RS associated with the first TRP and the second RS associated with the second TRP.
  4. 4 . The method of claim 1 , wherein the one or more offset values comprise one or more time difference values, one or more frequency offset values, or one or more phase offset values.
  5. 5 . The method of claim 1 , wherein the first RS comprises a first channel state information reference signal (CSI-RS) resource or first second synchronization signal (SS)/physical broadcast channel (PBCH) blocks, and the second RS comprises a second CSI-RS resource or second SS/PBCH blocks.
  6. 6 . The method of claim 5 , wherein the measurement report is relative to an arrival time of the first CSI-RS resource and the second CSI-RS resource, an arrival time of the first SS/PBCH blocks and the second SS/PBCH blocks, a frequency offset of the first CSI-RS resource and the second CSI-RS resource, a frequency offset of the first SS/PBCH blocks and the second SS/PBCH blocks, a phase of the first CSI-RS resource and the second CSI-RS resource, or a phase of the first SS/PBCH blocks and the second SS/PBCH blocks.
  7. 7 . The method of claim 5 , wherein the first CSI-RS resource is configured with multiple antenna ports, and the second CSI-RS resource is configured with multiple antenna ports.
  8. 8 . The method of claim 7 , wherein the measurement report is relative to an indicator of the first CSI-RS resource and the second CSI-RS resource, an indicator of the first SS/PBCH block and the second SS/PBCH block, or an indicator of a first CSI-RS resource antenna port index and a second CSI-RS resource antenna port index.
  9. 9 . The method of claim 1 , wherein transmitting the measurement report to the base station comprises: transmitting the measurement report to the base station through a media access control (MAC) control element (CE) message, an uplink control information (UCI) through a physical uplink control channel (PUCCH) transmission, a periodic manner, a semi-persistent manner, an aperiodic manner, or a UE-driven mode.
  10. 10 . A user equipment (UE), comprising: a memory; a transceiver; and a processor coupled to the memory and the transceiver; wherein the UE is configured to: receive a request to measure one or more offset values between a first reference signal (RS) associated with a first transmission/reception point (TRP) and a second RS associated with a second TRP from a base station; and transmit a measurement report to the base station, wherein the measurement report indicates the one or more offset values between the first RS associated with the first TRP and the second RS associated with the second TRP.
  11. 11 . The UE of claim 10 , wherein the UE is further configured to: measure the first RS associated with the first TRP and the second RS associated with the second TRP.
  12. 12 . The UE of claim 10 , wherein the UE is further configured to: calculate the one or more offset values between the first RS associated with the first TRP and the second RS associated with the second TRP.
  13. 13 . The UE of claim 10 , wherein the one or more offset values comprise one or more time difference values, one or more frequency offset values, or one or more phase offset values.
  14. 14 . The UE of claim 10 , wherein the first RS comprises a first channel state information reference signal (CSI-RS) resource or first second synchronization signal (SS)/physical broadcast channel (PBCH) blocks, and the second RS comprises a second CSI-RS resource or second SS/PBCH blocks.
  15. 15 . The UE of claim 14 , wherein the measurement report is relative to an arrival time of the first CSI-RS resource and the second CSI-RS resource, an arrival time of the first SS/PBCH blocks and the second SS/PBCH blocks, a frequency offset of the first CSI-RS resource and the second CSI-RS resource, a frequency offset of the first SS/PBCH blocks and the second SS/PBCH blocks, a phase of the first CSI-RS resource and the second CSI-RS resource, or a phase of the first SS/PBCH blocks and the second SS/PBCH blocks.
  16. 16 . A base station, comprising: a memory; a transceiver; and a processor coupled to the memory and the transceiver; wherein the base station is configured to: transmit a request to measure one or more offset values between a first reference signal (RS) associated with a first transmission/reception point (TRP) and a second RS associated with a second TRP to a user equipment; and receive a measurement report from the user equipment, wherein the measurement report indicates the one or more offset values between the first RS associated with the first TRP and the second RS associated with the second TRP.
  17. 17 . The base station of claim 16 , wherein the base station is further configured to: perform an inter-TRP calibration of the first TRP and the second TRP based on the measurement report.
  18. 18 . The base station of claim 16 , wherein the one or more offset values comprise one or more time difference values, one or more frequency offset values, or one or more phase offset values.
  19. 19 . The base station of claim 16 , wherein the first RS comprises a first channel state information reference signal (CSI-RS) resource or first second synchronization signal (SS)/physical broadcast channel (PBCH) blocks, and the second RS comprises a second CSI-RS resource or second SS/PBCH blocks.
  20. 20 . The base station of claim 19 , wherein the measurement report is relative to an arrival time of the first CSI-RS resource and the second CSI-RS resource, an arrival time of the first SS/PBCH blocks and the second SS/PBCH blocks, a frequency offset of the first CSI-RS resource and the second CSI-RS resource, a frequency offset of the first SS/PBCH blocks and the second SS/PBCH blocks, a phase of the first CSI-RS resource and the second CSI-RS resource, or a phase of the first SS/PBCH blocks and the second SS/PBCH blocks.

Description

CROSS-REFERENCE TO RELATED APPLICATION This is a continuation application of International Patent Application No. PCT/CN2024/104480, filed on July 09, 2024, which claims priority to US application No. 63/526,883, filed on July 14, 2023, the disclosures of the above are hereby incorporated by reference in their entirety. BACKGROUND The current coherent joint transmission assumes transmission/reception points (TRPs) are perfectly synchronized with respect to both time and frequency. But in real systems, there exists timing offset and frequency offset between TRPs. Those imperfect factors would impair a performance coherent joint transmission because the assumption of current design is not satisfied. Thus, there is an unmet need for a mechanism that enables TRPs to compensate the timing offset and frequency offset. Therefore, there is a need for apparatuses and methods of wireless communication. SUMMARY The present disclosure relates to the field of communication systems, and more particularly, to apparatuses and methods of wireless communication. An object of the present disclosure is to propose apparatuses and methods of wireless communication, which can solve issues in the prior art and other issues, provide an exemplary technique by which a user equipment (UE) may measure and report relative time and frequency synchronization offset to assist inter-transmission/reception point (TRP) calibration, adjust timing and frequency synchronization between TRPs, and/or improve a performance coherent joint transmission. In a first aspect of the present disclosure, a method of wireless communication of a user equipment (UE) includes receiving a request to measure one or more offset values between a first reference signal (RS) associated with a first transmission/reception point (TRP) and a second RS associated with a second TRP from a base station; and transmitting a measurement report to the base station, wherein the measurement report indicates the one or more offset values between the first RS associated with the first TRP and the second RS associated with the second TRP. In a second aspect of the present disclosure, a UE includes a memory, a transceiver, and a processor coupled to the memory and the transceiver. The UE is configured to receive a request to measure one or more offset values between a first reference signal (RS) associated with a first transmission/reception point (TRP) and a second RS associated with a second TRP from a base station; and transmit a measurement report to the base station, wherein the measurement report indicates the one or more offset values between the first RS associated with the first TRP and the second RS associated with the second TRP. In a third aspect of the present disclosure, a base station includes a memory, a transceiver, and a processor coupled to the memory and the transceiver. The base station is configured to: transmit a request to measure one or more offset values between a first reference signal (RS) associated with a first transmission/reception point (TRP) and a second RS associated with a second TRP to a user equipment; and receive a measurement report from the user equipment, wherein the measurement report indicates the one or more offset values between the first RS associated with the first TRP and the second RS associated with the second TRP. BRIEF DESCRIPTION OF DRAWINGS In order to illustrate the embodiments of the present disclosure or related art more clearly, the following figures will be described in the embodiments are briefly introduced. It is obvious that the drawings are merely some embodiments of the present disclosure, a person having ordinary skill in this field can obtain other figures according to these figures without paying the premise. FIG. 1A is a schematic diagram of an example of multi-transmission/reception point (TRP) based non-coherent joint transmission. FIG. 1B is a schematic diagram of another example of multi-TRP transmission. FIG. 2 is a block diagram of one or more user equipments (UEs) and a base station of communication in a communication network system according to an embodiment of the present disclosure. FIG. 3 is a block diagram of a UE according to an embodiment of the present disclosure. FIG. 4 is a block diagram of a UE according to an embodiment of the present disclosure. FIG. 5 is a flowchart illustrating a method of wireless communication performed by a UE according to an embodiment of the present disclosure. FIG. 6 is a block diagram of a base station according to an embodiment of the present disclosure. FIG. 7 is a block diagram of a base station according to an embodiment of the present disclosure. FIG. 8 is a flowchart illustrating a method of wireless communication performed by a base station according to an embodiment of the present disclosure. FIG. 9 is a block diagram of an example of a computing device according to an embodiment of the present disclosure. FIG. 10 is a block diagram of a communication system acc