High speed beam management
Certain aspects of the present disclosure provide techniques for high speed beam management. A method that may be performed by a user equipment (UE) includes receiving beamformed signals from at least one base station (BS); determining that the UE is in a high mobility state and one or more parameters associated with the high mobility state, based on the received signals; transmitting at least one of the one or more parameters to the at least one BS; and communicating with the at least one BS based on the one or more parameters.
1 . A method of wireless communication by a user equipment (UE), comprising:
receiving beamformed signals from at least one base station (BS);
determining a high mobility state of the UE and one or more parameters associated with the high mobility state, based on the beamformed signals, wherein the one or more parameters include a first indication of a discontinuous reception (DRX) configuration based on the high mobility state of the UE;
transmitting at least one of the one or more parameters to the at least one BS; and
communicating with the at least one BS based on the one or more parameters.
2 . The method of claim 1 , wherein the one or more parameters include:
a second indication of one or more measurements of the beamformed signals, wherein the measurements indicate the high mobility state of the UE, or a third indication of one or more events associated with the high mobility state of the UE.
3 . The method of claim 2 , wherein the measurements include at least one of a Doppler frequency shift, an angular variation associated with an angle of arrival of the beamformed signals, or a signal quality of the beamformed signals.
4 . The method of claim 2 , wherein the events include at least one of a high speed event, a Doppler shift event, or an angular variation event.
5 . The method of claim 1 , wherein the DRX configuration includes at least one of:
a configuration for a long DRX cycle,
a configuration for a short DRX cycle,
a DRX pattern, or
a configuration for the UE to stay in a connected state with the at least one BS and disable the DRX cycle.
6 . The method of claim 1 , wherein:
communicating with the at least one BS comprises communicating with the at least one BS based on a DRX configuration included in the one or more parameters, and
the DRX configuration comprises at least one of a configuration for a long DRX cycle, a configuration for a short DRX cycle, a DRX pattern, or a configuration for the UE to stay in a connected state with the at least one BS and disable the DRX cycle.
7 . The method of claim 1 , further comprising:
receiving, from the at least one BS, an indication of a DRX configuration;
wherein communicating with the at least one BS comprises communicating with the at least one BS based on the DRX configuration; and
wherein the DRX configuration comprises at least one of a configuration for a long DRX cycle, a configuration for a short DRX cycle, a DRX pattern, or a configuration for the UE to stay in a connected state with the at least one BS and disable the DRX cycle.
8 . The method of claim 7 , wherein the indication is received via radio resource control signaling, downlink control information, or a medium access control (MAC) control element.
9 . The method of claim 1 , wherein the high mobility state includes the UE moving at a speed of 350 kilometers per hour (km/h) to 650 km/h.
10 . The method of claim 1 , wherein communicating with the at least one BS comprises communicating with the at least one BS via a single carrier frequency.
11 . The method of claim 10 , wherein the carrier frequency is within a frequency range of 400 MHz to 7200 MHz or 24 GHz to 53 GHz.
12 . A method of wireless communication by a base station (BS}, comprising:
receiving, from a user equipment (UE), one or more parameters associated with a high mobility state of the UE;
determining a first discontinuous reception (DRX) configuration based at least in part on the one or more parameters;
transmitting an indication of the first DRX configuration to the UE; and
communicating with the UE based on the first DRX configuration.
13 . The method of claim 12 , wherein the first DRX configuration comprises at least one of:
a configuration for a long DRX cycle,
a configuration for a short DRX cycle,
a DRX pattern, or
a configuration for the UE to stay in a connected state with the BS and disable the DRX cycle.
14 . The method of claim 12 , wherein the indication is transmitted via radio resource control signaling, downlink control information, or a medium access control (MAC) control element.
15 . The method of claim 12 , wherein the one or more parameters include at least one of:
a first indication of one or more measurements of beamformed signals received by UE, wherein the measurements indicate the high mobility state of the UE,
a second indication of one or more events associated with the high mobility state of the UE, or
a third indication of a second DRX configuration based on the high mobility state of the UE.
16 . The method of claim 15 , wherein the measurements include at least one of a Doppler frequency shift, an angular variation associated with an angle of arrival of the beamformed signals, or a signal quality of the beamformed signals.
17 . The method of claim 15 , wherein the events include at least one of a high speed event, a Doppler shift event, or an angular variation event.
18 . The method of claim 15 , wherein the second DRX configuration includes at least one of:
a configuration for a long DRX cycle,
a configuration for a short DRX cycle,
a DRX pattern, or
a configuration for the UE to stay in a connected state with the BS and disable the DRX cycle.
19 . The method of claim 15 , wherein the first DRX configuration includes the second DRX configuration.
20 . The method of claim 15 , wherein the first DRX configuration is different from the second DRX configuration.
21 . The method of claim 12 , wherein communicating with the UE comprises communicating with the UE via a single carrier frequency.
22 . A method of wireless communication by a user equipment (UE), comprising:
transmitting, while the UE is in a high mobility state, beamformed signals to at least one base station (BS);
receiving, from the at least one BS, an indication of a DRX configuration based at least in part on the high mobility state of the UE; and
communicating with the at least one BS based on the DRX configuration.
23 . The method of claim 22 , wherein the DRX configuration comprises at least one of:
a configuration for a long DRX cycle,
a configuration for a short DRX cycle,
a DRX pattern, or
a configuration for the UE to stay in a connected state with the at least one BS and disable the DRX cycle.
24 . The method of claim 22 , wherein the indication is received via radio resource control signaling, downlink control information, or a medium access control (MAC) control element.
25 . The method of claim 22 , wherein the beamformed signals include an uplink reference signal.
26 . The method of claim 25 , wherein the uplink reference signal includes at least one of a sounding reference signal, a demodulation reference signal, or a phase tracking reference signal.
27 . The method of claim 22 , wherein the high mobility state includes the UE moving at a speed of 350 kilometers per hour (km/h) to 650 km/h.
28 . The method of claim 22 , wherein communicating with the at least one BS comprises communicating with the at least one BS via a single carrier frequency.
29 . The method of claim 28 , wherein the carrier frequency is within a frequency range of 400 MHz to 7200 MHz or 24 GHz to 53 GHz.
30 . A method of wireless communication by a base station (BS}, comprising:
receiving beamformed signals from at least one user equipment (UE);
determining that the at least one UE is in a high mobility state based on the beamformed signals and a discontinuous reception (DRX) configuration based at least in part on the high mobility state of the at least one UE;
transmitting, to the at least one UE, an indication of the DRX configuration; and
communicating with the at least one UE based on the DRX configuration.
31 . The method of claim 30 , wherein the DRX configuration comprises at least one of:
a configuration for a long DRX cycle,
a configuration for a short DRX cycle,
a DRX pattern, or
a configuration for the UE to stay in a connected state with the BS and disable the DRX cycle.
32 . The method of claim 30 , wherein the indication is transmitted via radio resource control signaling, downlink control information, or a medium access control (MAC) control element.
33 . The method of claim 30 , wherein the beamformed signals include an uplink reference signal.
34 . The method of claim 33 , wherein the uplink reference signal includes at least one of a sounding reference signal, a demodulation reference signal, or a phase tracking reference signal.
35 . The method of claim 30 , wherein communicating with the at least one UE comprises communicating with the at least one UE via a single carrier frequency.