Method for indicating resource allocation, method for obtaining resource allocation, communication apparatus, and nan-transitory computer-readable storage medium

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15-16. (canceled)

A method for obtaining resource allocation, applied to a sidelink unlicensed frequency band, wherein the method is performed by a terminal device, and the method comprises:

• determining a frequency domain resource allocation granularity, wherein the frequency domain resource allocation granularity is a sub-channel or an interlaced resource block (IRB);
• and
• receiving downlink control information sent by a network device based on the frequency domain resource allocation granularity, wherein the downlink control information comprises a frequency domain resource allocation indication domain configured to indicate a frequency domain resource allocated to the terminal device.

21-22. (canceled)

24-35. (canceled)

37-38. (canceled)

A communication apparatus, comprising a processor and a memory, wherein the memory stores a computer program, and the processor executes the computer program stored in the memory to enable the communication apparatus to perform a method comprising:

• determining a frequency domain resource allocation granularity, wherein the frequency domain resource allocation granularity is a sub-channel or an interlaced resource block (IRB) and
• sending downlink control information to a terminal device based on the frequency domain resource allocation granularity, wherein the downlink control information comprises a frequency domain resource allocation indication domain configured to indicate a frequency domain resource allocated to the terminal device.