Reporting switching gaps for beamforming
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit beamforming capability information including a switching gap that indicates an amount of time associated with the UE switching between an analog beamforming mode and a digital beamforming mode. The UE may receive a resource allocation based at least in part on the beamforming capability information. Numerous other aspects are described.
1. A user equipment (UE) for wireless communication, comprising:
memory; and
one or more processors coupled to the memory, the one or more processors configured to:
transmit, to a network node, control information comprising beamforming capability information comprising:
a first switching gap that indicates a first amount of time associated with the UE switching from an analog beamforming mode to a digital beamforming mode, and
a second switching gap that indicates a second amount of time, different from the first amount of time, associated with the UE switching from the digital beamforming mode to the analog beamforming mode;
receive, from the network node and based at least in part on transmitting the control information, a resource allocation comprising:
a first set of periodic time domain resources associated with the UE using the analog beamforming mode and a first analog to digital converter (ADC),
a second set of periodic time domain resources associated with the UE using the digital beamforming mode and a second ADC having a lower resolution and a lower power consumption than the first ADC,
a third set of periodic time domain resource-resources associated with the first switching gap, and
a fourth set of periodic time domain resource-resources associated with the second switching gap; and
receive, from the network node and in a dedicated symbol in one of the first set of periodic time domain resources, a channel state information-reference signal (CSI-RS) based at least in part on the UE using the analog beamforming mode and the first ADC,
wherein the CSI-RS is received independent from multiplexing with another signal in the dedicated symbol.
2. The UE of claim 1 , wherein the beamforming capability information is associated with a millimeter wave frequency.
3. The UE of claim 1 , wherein the beamforming capability information is included in a UE capability report.
4. The UE of claim 1 , wherein the one or more processors are further configured to communicate, after receiving the CSI-RS and based at least in part on the UE using the digital beamforming mode and the second ADC, with the network node.
5. The UE of claim 4 , wherein the one or more processors, to communicate with the network node, are configured to communicate at least one of data signals or control signals with the network node.
6. The UE of claim 1 , wherein the one or more processors are further configured to determine CSI based at least in part on the CSI-RS and by using a machine learning procedure.
7. The UE of claim 1 , wherein the control information is transmitted using medium access control (MAC) signaling, uplink control information (UCI), or radio resource control (RRC) signaling.
8. The UE of claim 1 , wherein the resource allocation is based at least in part on the beamforming capability information.
9. The UE of claim 1 , wherein the resource allocation is received before or after the first switching gap or the second switching gap.
10. A network node for wireless communication, comprising:
memory; and
one or more processors coupled to the memory, the one or more processors configured to:
receive, from a user equipment (UE), control information comprising beamforming capability information comprising:
a first switching gap that indicates a first amount of time associated with the UE switching from an analog beamforming mode to a digital beamforming mode, and
a second switching gap that indicates a second amount of time, different from the first amount of time, associated with the UE switching from the digital beamforming mode to the analog beamforming mode;
transmit, to the UE, a resource allocation, based at least in part on the beamforming capability information, comprising:
a first set of periodic time domain resources associated with the UE using the analog beamforming mode and a first analog to digital converter (ADC),
a second set of periodic time domain resources associated with the UE using the digital beamforming mode and a second ADC having a lower resolution and a lower power consumption than the first ADC,
a third set of periodic time domain resources associated with the first switching gap, and
a fourth set of periodic time domain resources associated with the second switching gap; and
transmit, to the UE and in a dedicated symbol in one of the first set of periodic time domain resources, a channel state information-reference signal (CSI-RS) associated with the UE using the analog beamforming mode and the first ADC,
wherein the CSI-RS is transmitted independent from multiplexing with another signal in the dedicated symbol.
11. The network node of claim 10 , wherein the beamforming capability information is associated with a millimeter wave frequency.
12. The network node of claim 10 , wherein the beamforming capability information is included in a UE capability report.
13. The network node of claim 10 , wherein the one or more processors are further configured to communicate, after transmitting the CSI-RS and using one of the second set of periodic time domain resources, with the UE.
14. The network node of claim 13 , wherein the one or more processors to communicate with the UE, are configured to communicate at least one of data signals or control signals with the UE.
15. The network node of claim 10 , wherein the control information is received via medium access control (MAC) signaling, uplink control information (UCI), or radio resource control (RRC) signaling.
16. The network node of claim 10 , wherein the one or more processors are configured to:
determine the resource allocation based at least in part on the beamforming capability information.
17. The network node of claim 10 , wherein the resource allocation is transmitted before or after the first switching gap or the second switching gap.
18. A method of wireless communication performed by a user equipment (UE), comprising:
transmitting, to a network node, control information comprising beamforming capability information comprising:
a first switching gap that indicates a first amount of time associated with the UE switching from an analog beamforming mode to a digital beamforming mode, and
a second switching gap that indicates a second amount of time, different from the first amount of time, associated with the UE switching from the digital beamforming mode to the analog beamforming mode;
receiving, from the network node and based at least in part on transmitting the control information, a resource allocation comprising:
a first set of periodic time domain resources associated with the UE using the analog beamforming mode and a first analog to digital converter (ADC),
a second set of periodic time domain resources associated with the UE using the digital beamforming mode and a second ADC having a lower resolution and a lower power consumption than the first ADC,
a third set of periodic time domain resources associated with the first switching gap, and
a fourth set of periodic time domain resources associated with the second switching gap; and
receiving, from the network node and in a dedicated symbol in one of the first set of periodic time domain resources, a channel state information-reference signal (CSI-RS) based at least in part on the UE using the analog beamforming mode and the first ADC,
wherein the CSI-RS is received independent from multiplexing with another signal in the dedicated symbol.
19. The method of claim 18 , wherein the beamforming capability information is associated with a millimeter wave frequency.
20. The method of claim 18 , further comprising:
communicating, after receiving the CSI-RS and based at least in part on the UE using the digital beamforming mode and the second ADC, with the network node.
21. The method of claim 18 , wherein the beamforming capability information is included in a UE capability report.
22. The method of claim 18 , wherein the control information is transmitted using medium access control (MAC) signaling, uplink control information (UCI), or radio resource control (RRC) signaling.
23. A method of wireless communication performed by a network node, comprising:
receiving, from a user equipment (UE), control information comprising beamforming capability information comprising:
a first switching gap that indicates a first amount of time associated with the UE switching from an analog beamforming mode to a digital beamforming mode, and
a second switching gap that indicates a second amount of time, different from the first amount of time, associated with the UE switching from the digital beamforming mode to the analog beamforming mode;
transmitting, to the UE, a resource allocation, based at least in part on the beamforming capability information, comprising:
a first set of periodic time domain resources associated with the UE using the analog beamforming mode and a first analog to digital converter (ADC),
a second set of periodic time domain resources associated with the UE using the digital beamforming mode and a second ADC having a lower resolution and a lower power consumption than the first ADC,
a third set of periodic time domain resources associated with the first switching gap, and
a fourth set of periodic time domain resources associated with the second switching gap; and
transmitting, to the UE and in a dedicated symbol in one of the first set of periodic time domain resources, a channel state information-reference signal (CSI-RS) associated with the UE using the analog beamforming mode and the first ADC,
wherein the CSI-RS is transmitted independent from multiplexing with another signal in the dedicated symbol.
24. The method of claim 23 , wherein the beamforming capability information is associated with a millimeter wave frequency.
25. The method of claim 23 , further comprising:
communicating, after transmitting the CSI-RS and using one of the second set of periodic time domain resources, with the UE.
26. The method of claim 25 , wherein communicating with the UE comprises at least one of:
communicating, after transmitting the CSI-RS and using one of the second set of periodic time domain resources, at least one of data signals or control signals based at least in part on the digital beamforming mode.
27. The method of claim 23 , wherein the beamforming capability information is included in a UE capability report.
28. The method of claim 23 , further comprising communicating based at least in part on the digital beamforming mode.
29. The method of claim 23 , wherein the control information is received via medium access control (MAC) signaling, uplink control information (UCI), or radio resource control (RRC) signaling.
30. The method of claim 23 , wherein the resource allocation is based at least in part on the beamforming capability information.