Gain control in sidelink
Certain aspects of the present disclosure provide techniques for wireless communications by a user equipment (UE) includes transmitting, in a first symbol in time of a slot, an automatic gain control (AGC) signal, wherein the UE transmits the AGC signal at a first power over a first frequency bandwidth; and transmitting, in a plurality of symbols of a mini-slot of the slot, a second AGC signal and data, wherein the UE refrains from transmitting between the first symbol and the plurality of symbols.
1. A user equipment (UE), comprising:
a memory comprising executable instructions; and
one or more processors configured to execute the instructions and cause the UE to:
transmit, in a first symbol of a total number of symbols of a slot comprising one or more mini-slots, a first automatic gain control (AGC) signal at a first power over a first frequency bandwidth, wherein each mini-slot comprises a respective plurality of symbols of the total number of symbols; and
transmit, in a first plurality of symbols of a first mini-slot of the one or more mini-slots, a second AGC signal and data.
2. The UE of claim 1 , wherein the one or more processors are configured to execute the instructions and cause the UE to at least one of:
transmit the second AGC signal and the data at the first power, or
refrain from transmitting between the first symbol and the first plurality of symbols of the first mini-slot.
3. The UE of claim 1 , wherein the first power comprises a transmission power to transmit the first AGC signal or an average power averaged over a duration of the slot to transmit the AGC signal.
4. The UE of claim 1 , wherein the first AGC signal comprises a random sequence.
5. The UE of claim 1 , wherein the one or more processors are configured to execute the instructions and cause the UE to transmit the second AGC signal and the data over the first frequency bandwidth.
6. The UE of claim 1 , wherein each resource of the first frequency bandwidth is associated with a different symbol of the first plurality of symbols in which the data is transmitted.
7. The UE of claim 1 , wherein the first frequency bandwidth comprises a default frequency bandwidth for transmitting AGC signals in a first symbol in time of a given slot.
8. The UE of claim 1 , wherein the first frequency bandwidth is based on previous mini-slot transmissions.
9. The UE of claim 1 , wherein the one or more processors are configured to execute the instructions and cause the UE to transmit the first AGC signal using a first beam, and the second AGC signal using a second beam that is narrower in beam width than the first beam.
10. The UE of claim 1 , wherein the data comprises a physical sidelink shared channel.
11. The UE of claim 1 , wherein the one or more processors are configured to execute the instructions and cause the UE to transmit, in a second plurality of symbols of a second mini-slot of the one or more mini-slots, a third AGC signal and additional data, and wherein the first frequency bandwidth comprises a second frequency bandwidth of the second AGC signal and a third frequency bandwidth of the third AGC signal.
12. The UE of claim 1 , wherein the one or more processors are configured to execute the instructions and cause the UE to receive, in a second plurality of symbols of a second mini-slot of the one or more mini-slots, a third AGC signal and additional data.
13. A method for wireless communication by a user equipment (UE), comprising:
transmitting, in a first symbol of a total number of symbols of a slot comprising one or more mini-slots, a first automatic gain control (AGC) signal at a first power over a first frequency bandwidth, wherein each mini-slot comprises a respective plurality of symbols of the total number of symbols; and
transmitting, in a first plurality of symbols of a first mini-slot of the one or more mini-slots, a second AGC signal and data.
14. The method of claim 13 , further comprising at least one of:
transmitting the second AGC signal and the data at the first power; or
refraining from transmitting between the first symbol and the first plurality of symbols of the first mini-slot.
15. The method of claim 13 , wherein the first power comprises a transmission power to transmit the first AGC signal or an average power averaged over a duration of the slot to transmit the AGC signal.
16. The method of claim 13 , wherein the AGC signal comprises a random sequence.
17. The method of claim 13 , wherein the second AGC signal and the data are transmitted over the first frequency bandwidth.
18. The method of claim 13 , wherein each resource of the first frequency bandwidth is associated with a different symbol of the first plurality of symbols in which the data is transmitted.
19. The method of claim 13 , wherein the first frequency bandwidth comprises a default frequency bandwidth for transmitting AGC signals in a first symbol in time of a given slot.
20. The method of claim 13 , wherein the first frequency bandwidth is based on previous mini-slot transmissions.
21. The method of claim 13 , wherein the AGC signal is transmitted using a first beam, and wherein the second AGC signal is transmitted using a second beam that is narrower in beam width than the first beam.
22. The method of claim 13 , wherein the data comprises a physical sidelink shared channel.
23. The method of claim 13 , further comprising transmitting, in a second plurality of symbols of a second mini-slot of the one or more mini-slots, a third AGC signal and additional data, wherein the first frequency bandwidth comprises a second frequency bandwidth of the second AGC signal and a third frequency bandwidth of the third AGC signal.
24. The method of claim 13 , further comprising receiving, in a second plurality of symbols of a second mini-slot of the one or more mini-slots, a third AGC signal and additional data.
25. A non-transitory computer readable medium storing code for wireless communication by a user equipment (UE), the code comprising instructions executable by one or more processors to cause the UE to:
transmit, in a first symbol of a total number of symbols of a slot comprising one or more mini-slots, a first automatic gain control (AGC) signal at a first power over a first frequency bandwidth, wherein each mini-slot comprises a respective plurality of symbols of the total number of symbols; and
transmit, in a first plurality of symbols of a first mini-slot of the one or more mini-slots, a second AGC signal and data.