Sidelink Data Transmission Method and Related Apparatus

A first transmitting terminal, comprising:

• a processor;
• and
• a memory coupled to the processor and configured to store programming instructions that, when executed by the processor, cause the first transmitting terminal to:
• send a first channel state information-reference signal (CSI-RS) in N frequency domain units, wherein N is a positive integer,
• detect channel state information (CSI) received from K receiving terminals, wherein the CSI received the K receiving terminals is based on the first CSI-RS, and K is greater than or equal to 2,
• update transmit powers in the N frequency domain units based on all or some of the CSI received from the K receiving terminals, and
• send user data based on the updated transmit powers in the N frequency domain units.

A first receiving terminal, comprising:

• a processor;
• and
• a memory coupled to the processor and configured to store programming instructions that, when executed by the processor, cause the first receiving terminal to:
• detect channel state information-reference signals (CSI-RSs) received from L transmitting terminals in H1 frequency domain units in frequency domain units occupied by a target link, wherein L is greater than or equal to 2, and H1 is greater than or equal to 1, and
• send first channel state information (CSI) of the H1 frequency domain units based on the CSI-RSs received from the L transmitting terminals, wherein the first CSI is configured to be used by the L transmitting terminals to update transmit powers of the H1 frequency domain units.

A non-transitory computer storage medium comprising computer instructions stored thereon, wherein when the computer instructions are run on an electronic device, the electronic device is enabled to:

• send a first channel state information-reference signal (CSI-RS) in N frequency domain units, wherein N is a positive integer;
• detect channel state information CSI received from K receiving terminals, wherein the CSI received from the K receiving terminals is determined based on the first CSI-RS, and K is greater than or equal to 2;
• update transmit powers in the N frequency domain units based on all or some of the CSI received from the K receiving terminals;
• and
• send user data based on the updated transmit powers in the N frequency domain units.