CPC H04L 27/2602 (2013.01) [H04L 5/0048 (2013.01); H04L 5/0051 (2013.01); H04L 27/261 (2013.01); H04W 8/005 (2013.01); H04W 72/0446 (2013.01); H04W 72/121 (2013.01); H04W 76/14 (2018.02); H04W 72/23 (2023.01)] | 13 Claims |
1. A method for performing channel sounding between terminals, comprising:
sending, by a first terminal, a resource scheduling request to a network-side device when the first terminal starts a communication connection with a second terminal, wherein the resource scheduling request is configured to request the network-side device to allocate a transmission resource for channel sounding between the first terminal and the second terminal, and the resource scheduling request carries information about the second terminal;
after sending the resource scheduling request to the network-side device:
sending, by the first terminal, sounding control signaling on the transmission resource to the second terminal, wherein the sounding control signaling triggers the second terminal to send a sounding reference signal; and
receiving, by the first terminal, information about the transmission resource sent by the network-side device, and
receiving, by the first terminal, the sounding reference signal sent by the second terminal on the transmission resource allocated by the network-side device, and obtaining information about a communication channel between the first terminal and the second terminal;
wherein the transmission resource is a slot or a mini-slot, and a number of symbols comprised in the mini-slot is less than a number of symbols comprised in the slot, and the slot or the mini-slot comprises a first symbol and a second symbol;
the first symbol is allocated to the first terminal for transmitting the sounding control signaling;
the second symbol is allocated to the second terminal for transmitting the sounding reference signal; and
the first symbol and the second symbol are different symbols.
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