Electronic device, wireless communication method and computer-readable medium

1. An electronic device configured to operate as a user equipment for wireless communication, comprising processing circuitry configured to perform control to:

perform beamforming-based sidelink communication with another user equipment via a transmission beam and a reception beam,

wherein performing the beamforming-based sidelink communication includes determining one beam management mode for the sidelink communication from a predetermined set of beam management modes,

wherein the one beam management mode is determined from the predetermined set of beam management modes based on a stability of the sidelink communication, and

wherein the predetermined set of beam management modes comprises:

a first beam management mode, in which the transmission beam is determined based on a measurement with respect to a corresponding transmission beam reference signal and the reception beam is determined based on a measurement with respect to a corresponding reception beam reference signal; and

a second beam management mode, in which only one of the transmission beam or the reception beam is determined based on the measurement with respect to the corresponding beam reference signal, and the other of the transmission beam or the reception beam is determined based on a criteria other than a measurement with respect to a beam reference signal.

2. The electronic device according to claim 1 , wherein the transmission beam reference signal is one of a plurality of transmission beam reference signals, and the processing circuitry is configured to perform control to transmit, on a plurality of beams, the plurality of transmission beam reference signals which respectively correspond to the plurality of beams to the another user equipment.

3. The electronic device according to claim 1 , wherein either of the transmission beam reference signal or the reception beam reference signal comprises a sounding reference signal, a sidelink synchronization signal or a sidelink beam management reference signal.

4. The electronic device according to claim 1 , wherein the processing circuitry is further configured to perform control to transmit the transmission beam reference signal to the another user equipment along with at least one of the following information:

a type of the transmission beam reference signal;

a time-frequency resource position of the transmission beam reference signal; or

a beam identification corresponding to the transmission beam reference signal.

5. The electronic device according to claim 1 , wherein the processing circuitry is further configured to perform control to acquire position information of the another user equipment and/or provide position information of a current user equipment to the another user equipment, and

wherein the determination of at least one of the transmission beam or the reception beam is further based on the position information.

6. The electronic device according to claim 5 ,

wherein the position information comprises longitude and latitude, orientation and speed information, and/or

wherein the processing circuitry is configured to perform control to broadcast the position information of the current user equipment and/or receive broadcasted position information of the another user equipment.

7. The electronic device according to claim 1 , wherein the processing circuitry is further configured to perform control to perform a reception beam scan, based on a failure of a sidelink communication through a current reception beam.

8. The electronic device according to claim 7 ,

wherein the processing circuitry is further configured to perform control to transmit indication information related to the beam management mode to the another user equipment.

9. The electronic device according to claim 1 , wherein the either of the transmission beam reference signal or the reception beam reference signal is transmitted using a resource allocated by a base station.

10. The electronic device according to claim 1 , wherein the processing circuitry is configured to perform control to receive the reception beam reference signal from the another user equipment, and the processing circuitry is further configured to perform control to receive at least one of the following information transmitted by a base station:

a type of the reception beam reference signal;

a time-frequency resource position of the reception beam reference signal; or

a beam identification corresponding to the reception beam reference signal.

11. The electronic device according to claim 1 , wherein the processing circuitry is configured to perform control to transmit the transmission beam reference signal to the another user equipment, and the processing circuitry is further configured to:

perform control to receive feedback information transmitted by the another user equipment based on the measurement with respect to the transmission beam reference signal; and

determine the transmission beam based on the feedback information.

12. The electronic device according to claim 1 , wherein the processing circuitry is configured to perform control to receive the reception beam reference signal from the another user equipment, and the processing circuitry is further configured to:

perform control to perform the measurement with respect to the reception beam reference signal; and

determine the reception beam based on the measurement with respect to the reception beam reference signal.

13. The electronic device according to claim 1 , wherein the transmission beam reference signal is one of a plurality of transmission beam reference signals, and the processing circuitry is configured to perform control to periodically transmit, on a plurality of beams, the plurality of transmission beam reference signals which respectively correspond to the plurality of beams to the another user equipment.

14. The electronic device according to claim 1 , wherein the reception beam reference signal is one of a plurality of reception beam reference signals, and the processing circuitry is configured to perform control to perform measurement with respect to the plurality of reception beam reference signals which are periodically transmitted by the another user equipment on a plurality of beams and which respectively correspond to the plurality of beams.

15. The electronic device according to claim 1 , wherein the processing circuitry is further configured to perform control to receive indication information indicating a link failure which is transmitted by the another user equipment.

16. The electronic device according to claim 1 , wherein the processing circuitry is further configured to determine a recovery mode for the sidelink communication based on service requirements,

wherein the recovery mode comprises one of:

a reselect-request recovery mode,

a multi-beam mode,

or a beam widening mode.

17. A wireless communication method performed by a user equipment, the wireless communication method comprising:

performing beamforming-based sidelink communication with another user equipment via a transmission beam and a reception beam,

wherein the performing the beamforming-based sidelink communication includes determining one beam management mode for the sidelink communication from a predetermined set of beam management modes,

wherein the one beam management mode is determined from the predetermined set of beam management modes based on a stability of the sidelink communication, and wherein the predetermined set of beam management modes comprises:

a first beam management mode, in which the transmission beam is determined based on a measurement with respect to a corresponding transmission beam reference signal and the reception beam is determined based on a measurement with respect to a corresponding reception beam reference signal; and

a second beam management mode, in which only one of the transmission beam or the reception beam is determined based on the measurement with respect to the corresponding beam reference signal, and the other of the transmission beam or the reception beam is determined based on a criteria other than a measurement with respect to a beam reference signal.

18. A non-transitory computer readable program product containing instructions for causing an user equipment to perform a wireless communication method, the wireless communication method comprising:

performing beamforming-based sidelink communication with another user equipment via a transmission beam and a reception beam,

wherein the performing the beamforming-based sidelink communication includes determining one beam management mode for the sidelink communication from a predetermined set of beam management modes,

wherein the one beam management mode is determined from the predetermined set of beam management modes based on a stability of the sidelink communication, and

wherein the predetermined set of beam management modes comprises:

a first beam management mode, in which the transmission beam is determined based on a measurement with respect to a corresponding transmission beam reference signal and the reception beam is determined based on a measurement with respect to a corresponding reception beam reference signal; and

a second beam management mode, in which only one of the transmission beam or the reception beam is determined based on the measurement with respect to the corresponding beam reference signal, and the other of the transmission beam or the reception beam is determined based on a criteria other than a measurement with respect to a beam reference signal.