EP-4307761-B1 - METHOD FOR MEASURING CHANNEL BUSY RATIO, TERMINAL DEVICE, AND NETWORK DEVICE

Inventors

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

Dates

Publication Date

20260506

Application Date

20210508

Claims (10)

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, 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, 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 a resource selection window, 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.
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, wherein the method is applied to a scenario where resource selection is performed based on partial sensing.
4. The method of any one of claims 1 to 3, wherein the N time units do not comprise a time unit unavailable for the UE to perform sensing.
5. The method of any one of claims 1 to 4, wherein a time unit of the N time units comprises at least one of: a slot, a symbol, or a subframe.
6. 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, 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, 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 a resource selection window, 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.
7. 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 5.
8. 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 6.
9. A computer-readable storage medium having stored thereon a computer program which causes a computer in a user equipment, UE, to implement the method of any one of claims 1 to 5.
10. A computer-readable storage medium having stored thereon a computer program which causes a computer in a network device, to implement the method of claim 6.

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. Related technologies can be found at least in non-patent documents LG ELECTRONICS: "Discussion on resource allocation for power saving", R1-2103378; XIAOMI: "Discussion on sidelink resource allocation enhancement for power saving", R1-2102965; and CATT ET AL: "Discussion on resource allocation for power saving", R1-2102606. 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. The present invention is set out in the appended set of claims. 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 diagram of a mechanism of sidelink DRX.FIG. 11 is a diagram of a mechanism of partial sensing according to the present disclosure.FIG. 12 is a flowchart of a wireless communication method according to an embodiment of the present disclosure.FIG. 13 is a diagram of determining N time units according to an embodiment of the present disclosure.FIG. 14 is another diagram of determining N time units according to an embodiment of the present disclosure.FIG. 15 is yet another diagram of determining N time units according to an embodiment of the present disclosure.FIG. 16 is still another diagram of determining N time units according to an embodiment of the present disclosure.FIG. 17 is a flowchart of another wireless communication method according to an embodiment of the present disclosure.FIG. 18 is a block diagram of a UE according to an embodiment of the present disclosure.FIG. 19 is a block diagram of a network device according to an embodiment of the present disclosure.FIG. 20 is a block diagram of a communication device according to an embodiment of the present disclosure.FIG. 21 is a block diagram of a device according to an embodiment of the present disclosure.FIG. 22 is a block diagram of a communication system according to an embodiment of the present disclosure. DETAILED DESCRIPTION Technical solutions in the embodiments of the disclosure would be described below in combination with the drawings in the embodiments of the disclosure. Obviously, the described embodiments are a portion of the embodiments of the present disclosure, rather than all of them. Based on the embodiments of the disclosure, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of protection of the present disclosure. The embodiments of the disclosure may be applied to various communication systems, such as a Global System of Mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) system, a General Packet Radio Service (GPRS), a Long Term Evolution (LTE) system, an Advanced long term evolution (LTE-A) system, a New Radio (NR) system, an evolution system of NR system, a LTE-base