Power control method of physical sidelink feedback channel and terminal
A technology of feedback channel and power control, applied in the field of communication, can solve the problem of inability to determine the transmission power of PSFCH
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Embodiment 1
[0048] Assumption: the terminal performs sidelink multicast communication, and the communication range of a certain multicast service is 400m. According to the QoS requirements, it is determined that the value range of the PSFCH power adjustment window is [3dBm, 20dBm], that is, about [0.005w, 0.1w]. Assuming that the mapping relationship between the distance between the receiving terminal and the transmitting terminal and the PSFCH transmission power is a linear correlation, the formula is expressed as:
[0049]
[0050] Among them, x represents the actual distance between the receiving terminal and the transmitting terminal, y represents the transmission power of PSFCH; 0.2 is the maximum transmission power of the receiving terminal 0.2w, which is 23dBm; 500 is the cut-off point N of the distance between the receiving terminal and the transmitting terminal at the maximum transmission power.
[0051] Taking the sending terminal as UE1 and the receiving terminals as UE2, UE...
Embodiment 2
[0072] Assumption: the terminal performs sidelink multicast communication, and the communication range of a certain multicast service is 500m. Determine a set of PSFCH power adjustment candidate values (+5dB, +3dB, +1dB, -1dB, -3dB) according to QoS requirements;
[0073] The relationship between the distance between the receiving terminal and the sending terminal and the power adjustment candidate value is as follows:
[0074] The distance between the receiving terminal and the transmitting terminal (0, 100m) corresponds to the power adjustment value -3dB;
[0075] The distance between the receiving terminal and the transmitting terminal (100, 200m) corresponds to the power adjustment value -1dB;
[0076] The distance between the receiving terminal and the transmitting terminal (200, 300m) corresponds to the power adjustment value +1dB;
[0077] The distance between the receiving terminal and the transmitting terminal (300, 400m) corresponds to the power adjustment value ...
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