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EP-4742794-A2 - METHOD FOR MEASURING CHANNEL BUSY RATIO, TERMINAL DEVICE, AND NETWORK DEVICE

EP4742794A2EP 4742794 A2EP4742794 A2EP 4742794A2EP-4742794-A2

Abstract

Embodiments of the present application provide a method for measuring a channel busy ratio (CBR), a terminal device, and a network device, which are applicable to calculating the CBR in a sidelink transmission system configured with SL DRX or partial sensing. The method for measuring a CBR includes: a terminal device determines the CBR of a target time according to a measurement result of an SL RSSI within N time units before the target time.

Inventors

  • ZHAO, ZHENSHAN
  • DING, YI
  • Zhang, Shichang
  • LIN, HUEI-MING

Assignees

  • GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.

Dates

Publication Date
20260513
Application Date
20210508

Claims (15)

  1. A method for measuring a Channel Busy Ratio, CBR, comprising: determining (S210), by a User Equipment, UE, a CBR at a target time according to a measurement result for Sidelink Received Signal Strength Indicator, SL RSSI, within N time units before the target time.
  2. The method of claim 1, wherein the N time units are time units available for the UE to measure the SL RSSI.
  3. The method of claim 1 or 2, wherein the N time units comprise part or all of time units during Discontinuous Reception, DRX, active time, or the N time units comprise time units, that are available for the UE to measure the SL RSSI, during the DRX active time and DRX inactive time.
  4. The method of claim 3, wherein a number of the time units during the DRX active time is determined according to at least one of: a sidelink DRX on duration timer, sl-drx-onDurationTimer, a sidelink DRX inactivity timer, sl-drx-InactivityTimer, or a sidelink DRX retransmission timer, sl-drx-Retransmission Timer.
  5. The method of claim 1 or 2, wherein the N time units comprise part or all of candidate time units in at least one period within a resource sensing window, and the N time units do not comprise non-candidate time units within the resource sensing window.
  6. The method of claim 5, wherein a number and a time domain position of the candidate time units in the at least one period are determined according to a number and a time domain position of candidate time units selected by the UE in the resource selection window.
  7. The method of claim 6, wherein the number of the candidate time units selected by the UE in the resource selection window is determined according to a configuration parameter, and the configuration parameter is configured to indicate a minimum number of time units selected in the resource selection window.
  8. The method of any one of claims 5 to 7, wherein the method is applied to a scenario where resource selection is performed based on partial sensing.
  9. The method of any one of claims 1 to 8, wherein the N time units do not comprise a time unit unavailable for the UE to perform sensing.
  10. The method of any one of claims 1 to 9, wherein a time unit of the N time units comprises at least one of: a slot, a symbol, or a subframe.
  11. A method for measuring a Channel Busy Ratio, CBR, comprising: sending (S310), by a network device, first information to a User Equipment, UE, wherein the first information is configured to indicate N time units before a target time, and a measurement result for Sidelink Received Signal Strength Indicator, SL RSSI, within the N time units is used to determine a CBR at the target time.
  12. A User Equipment, UE, comprising a processor and a memory having stored thereon a computer program, wherein the processor is configured to invoke and run the computer program stored in the memory to implement the method of any one of claims 1 to 10.
  13. A network device, comprising a processor and a memory having stored thereon a computer program, wherein the processor is configured to invoke and run the computer program stored in the memory to implement the method of claim 11.
  14. A computer-readable storage medium having stored thereon a computer program which causes a computer to implement the method of any one of claims 1 to 10.
  15. A computer-readable storage medium having stored thereon a computer program which causes a computer to implement the method of claim 11.

Description

TECHNICAL FIELD Embodiments of the disclosure relate to the field of communication, and particularly to a method for measuring a Channel Busy Ratio (CBR), a User Equipment, and a network device. BACKGROUND In a New Radio Sidelink (NR SL) system, in order to lower power consumption of a User Equipment (UE), a mechanism of partial sensing and a mechanism of Sidelink Discontinuous Reception (SL DRX) are introduced. In the two mechanisms, the UE is not always in a sensing state. For example, in the case of partial sensing, the UE only senses part of slots within each period. In the mechanism of SL DRX, the UE performs reception of data during the active time of the DRX, and the UE does not perform the reception of the data during the inactive time of the DRX and normally does not perform the measurement. How the UE can measure a Channel Busy Ratio (CBR) in these two mechanisms is an urgent problem to be solved. SUMMARY Embodiments of the disclosure provide a method for measuring a CBR, a UE, and a network device, which can be used to calculate a CBR in a sidelink transmission system configured with the SL DRX or the partial sensing. In a first aspect, a method for measuring a CBR is provided, which includes the following operation. A UE determines a CBR at a target time according to a measurement result for Sidelink Received Signal Strength Indicator (SL RSSI) within N time units before the target time. In a second aspect, a method for measuring a CBR is provided, which includes the following operation. A network device sends first information to a UE. The first information is configured to indicate N time units before a target time, and a measurement result for SL RSSI within the N time units is used to determine a CBR at the target time. In a third aspect, a UE is provided, which implements the method of the first aspect. Specifically, the UE includes a functional module configured to implement the method of the first aspect. In a fourth aspect, a network device is provided, which implements the method of the second aspect. Specifically, the network device includes a functional module configured to implement the method of the second aspect. In a fifth aspect, a UE is provided. The UE includes a processor and a memory having stored thereon a computer program. The processor is configured to invoke and run the computer program stored in the memory to implement the method of the first aspect. In a sixth aspect, a network device is provided. The network device includes a processor and a memory having stored thereon a computer program. The processor is configured to invoke and run the computer program stored in the memory to implement the method of the second aspect. In a seventh aspect, an apparatus is provided, which is configured to implement the method of any one of the first aspect and the second aspect. Specifically, the apparatus includes a processor configured to invoke and run a computer program from a memory to cause a device installed with the apparatus to implement the method of any one of the first aspect and the second aspect. In an eighth aspect, a computer-readable storage medium is provided. The computer-readable storage medium is configured to store a computer program which causes a computer to implement the method of any one of the first aspect and the second aspect. In a ninth aspect, a computer program product is provided. The computer program product includes computer program instructions which cause a computer to implement the method of any one of the first aspect and the second aspect. In a tenth aspect, a computer program is provided, which, when executed on a computer, causes the computer to implement the method of any one of the first aspect and the second aspect. With the technical solutions as presented above, a UE determines a CBR at a target time according to a measurement result for SL RSSI within N time units before the target time, so as to calculate the CBR in a sidelink transmission system configured with SL DRX or partial sensing. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram of a communication system to which an embodiment of the present disclosure is applicable.FIG. 2 is a diagram of another communication system to which an embodiment of the present disclosure is applicable.FIG. 3 is a diagram of sidelink communication within network coverage according to the present disclosure.FIG. 4 is a diagram of sidelink communication under partial network coverage according to the present disclosure.FIG. 5 is a diagram of sidelink communication outside network coverage according to the present disclosure.FIG. 6 is a diagram of unicast sidelink communication according to the present disclosure.FIG. 7 is a diagram of multicast sidelink communication according to the present disclosure.FIG. 8 is a diagram of broadcast sidelink communication according to the present disclosure.FIG. 9 is a diagram of resource selection based on sensing according to the present disclosure.FIG. 10 is a