AOD acquisition method and apparatus, and communication device

1 . A method for obtaining an angle of departure (AOD), comprising:

transmitting a plurality of sweeping beams to a reception terminal;

receiving at least one beam identifier, wherein the at least one beam identifier is determined according to signal quality of the plurality of sweeping beams; and

determining a target sweeping beam based on the at least one beam identifier, and determining an AOD of a transmission terminal based on the target sweeping beam, wherein the AOD of the transmission terminal is equal to a beam azimuth angle of the target sweeping beam;

wherein the method further comprises:

transmitting a capability negotiation inquiry to the reception terminal, wherein the capability negotiation inquiry is configured to negotiate whether the reception terminal supports AOD angle measurement based on beams; and

receiving a capability negotiation inquiry response transmitted from the reception terminal, wherein the negotiation inquiry response is configured to indicate whether the reception terminal supports the AOD angle measurement based on beams.

2 . The method for obtaining an AOD according to claim 1 , wherein determining the target sweeping beam based on the at least one beam identifier comprises:

obtaining a unique beam identifier based on the at least one beam identifier, and determining the target sweeping beam based on the unique beam identifier;

wherein the at least one beam identifier is at least one beam identifier selected in a descending order of the signal quality of the plurality of sweeping beams.

3 . The method for obtaining an AOD according to claim 1 , wherein transmitting the plurality of sweeping beams to the reception terminal comprises:

periodically transmitting the plurality of sweeping beams to the reception terminal according to an angle measurement period.

4 . The method for obtaining an AOD according to claim 1 , wherein transmitting the plurality of sweeping beams to the reception terminal comprises:

performing a plurality of rounds of beam sweeping, and transmitting, after each round of beam sweeping is completed, a plurality of sweeping beams swept in the round to the reception terminal;

performing the plurality of rounds of beam sweeping comprises:

performing beam sweeping according to a number of sweeping rounds negotiated with the reception terminal; or,

transmitting indication information to the reception terminal after each round of sweeping is completed or beam identifier is received, wherein the indication information is configured to indicate whether a sweeping beam in a next round is present; and the indication information further comprises start time of a next round of sweeping.

5 . The method for obtaining an AOD according to claim 4 , wherein the beam identifier is a beam identifier corresponding to a sweeping beam having optimal signal quality in the sweeping beams swept in each round, and performing the plurality of rounds of beam sweeping comprises:

determining a first beam azimuth angle of a sweeping beam in a next round according to a beam identifier received in a last round and a current round number; and

performing a next round of beam sweeping according to the first beam azimuth angle.

6 . The method for obtaining an AOD according to claim 4 , further comprising:

determining a second beam azimuth angle of the sweeping beam according to the sweeping beam identified by the beam identifier and a current round number; and

dividing the second beam azimuth angle according to a number of beams to be swept in each round, and determining a first beam azimuth angle of a next round.

7 . The method for obtaining an AOD according to claim 1 , wherein

a beam identifier of each sweeping beam is determined according to a corresponding transmission position of the sweeping beam, or,

each sweeping beam carries its own beam identifier.

8 . The method for obtaining an AOD according to claim 1 , further comprising:

receiving a measurement result of the sweeping beam, wherein the measurement result comprises at least one of:

reference signal receiving power (RSRP); or,

reference signal receiving quality (RSRQ).

9 . The method for obtaining an AOD according to claim 1 , wherein before transmitting the plurality of sweeping beams to the reception terminal, the method further comprises:

negotiating an angle measurement parameter of the AOD with the reception terminal in one of the following ways:

transmitting an angle measurement inquiry to the reception terminal, wherein the angle measurement inquiry carries the angle measurement parameter;

receiving an angle measurement inquiry response transmitted from the reception terminal, wherein the angle measurement inquiry response carries the angle measurement parameter;

transmitting resource scheduling information to the reception terminal, wherein the resource scheduling information comprises the angle measurement parameter; or

transmitting negotiation indication information to the reception terminal, wherein the negotiation indication information carries the angle measurement parameter;

wherein the angle measurement parameter comprises one or more of the following parameters:

a number of sweeping beams transmitted, a sweeping interval, a number of beam identifiers fed back, a number of sweeping rounds, a sweeping interval of each round, a number of sweeping beams swept in each round, time frequency resource information used by the sweeping beams, or an angle measurement period for triggering angle measurement.

10 . The method for obtaining an AOD according to claim 1 , wherein

the capability negotiation inquiry is transmitted or the capability negotiation inquiry response is received through a user equipment capability inquiry sidelink or a user equipment capability information sidelink.

11 . A method for obtaining an angle of departure (AOD), comprising:

receiving a plurality of sweeping beams transmitted from a transmission terminal;

measuring signal quality of each sweeping beam; and

transmitting at least one beam identifier to the transmission terminal according to the signal quality of the plurality of sweeping beams, wherein an AOD of the transmission terminal is equal to a beam azimuth angle of a target sweeping beam determined based on the at least one beam identifier;

wherein the method further comprises:

receiving a capability negotiation inquiry transmitted from the transmission terminal, wherein the capability negotiation inquiry is configured to negotiate whether a reception terminal supports AOD angle measurement based on beams; and

transmitting a capability negotiation inquiry response to the transmission terminal, wherein the negotiation inquiry response is configured to indicate whether the reception terminal supports the AOD angle measurement based on beams.

12 . The method for obtaining an AOD according to claim 11 , wherein the at least one beam identifier is at least one beam identifier selected in a descending order of the signal quality of the plurality of sweeping beams.

13 . The method for obtaining an AOD according to claim 11 , wherein receiving the plurality of sweeping beams transmitted from the transmission terminal comprises:

receiving, according to an angle measurement period, the plurality of sweeping beams periodically transmitted from the transmission terminal.

14 . The method for obtaining an AOD according to claim 11 , wherein receiving the plurality of sweeping beams transmitted from the transmission terminal comprises:

receiving, after each of a plurality of rounds of beam sweeping performed by the transmission terminal is completed, a plurality of sweeping beams, swept in the round, transmitted from the transmission terminal; wherein

receiving, after each of the plurality of rounds of beam sweeping performed by the transmission terminal is completed, the plurality of sweeping beams, swept in the round, transmitted from the transmission terminal comprises:

receiving the plurality of sweeping beams, swept in the round, transmitted from the transmission terminal according to a number of sweeping rounds negotiated with the transmission terminal; or,

receiving indication information transmitted from the transmission terminal, wherein the indication information is configured to indicate whether a sweeping beam in a next round is present; and the indication information is transmitted from the transmission terminal after each round of sweeping is completed or a beam identifier is received; and receiving, in response to the indication information that the sweeping beam in the next round is present, the plurality of sweeping beams transmitted from the transmission terminal after a next round of sweeping; wherein the indication information further comprises start time of the next round of sweeping, and the beam identifier is a beam identifier corresponding to a sweeping beam having optimal signal quality in the sweeping beams swept in each round.

15 . The method for obtaining an AOD according to claim 11 , further comprising:

determining a beam identifier of the sweeping beam according to a transmission position of the sweeping beam; or,

extracting the beam identifier of the sweeping beam from the sweeping beam.

16 . The method for obtaining an AOD according to claim 11 , further comprising:

transmitting a measurement result of the sweeping beam to the transmission terminal, wherein the measurement result comprises at least one of:

reference signal receiving power (RSRP); or,

reference signal receiving quality (RSRQ).

17 . The method for obtaining an AOD according to claim 11 , wherein before receiving the plurality of sweeping beams transmitted from the transmission terminal, the method further comprises:

negotiating an angle measurement parameter of the AOD with the transmission terminal in one of the following ways:

receiving an angle measurement inquiry transmitted from the transmission terminal, wherein the angle measurement inquiry carries the angle measurement parameter;

transmitting an angle measurement inquiry response to the transmission terminal, wherein the angle measurement inquiry response carries the angle measurement parameter;

receiving resource scheduling information transmitted from the transmission terminal, wherein the resource scheduling information comprises the angle measurement parameter; or,

receiving negotiation indication information transmitted from the transmission terminal, wherein the negotiation indication information carries the angle measurement parameter;

wherein the angle measurement parameter comprises one or more of the following parameters:

a number of sweeping beams transmitted, a sweeping interval, a number of beam identifiers fed back, a number of sweeping rounds, a sweeping interval of each round, a number of sweeping beams swept in each round, time frequency resource information used by the sweeping beams, and the angle measurement period for triggering angle measurement.

18 . The method for obtaining an AOD according to claim 11 , wherein

the capability negotiation inquiry is received or the capability negotiation inquiry response is transmitted through a user equipment capability inquiry sidelink or a user equipment capability information sidelink.

19 . A communication device, comprising:

at least one processor; and

a memory communicatively connected to the at least one processor, wherein

the memory stores an instruction executable by the at least one processor, and the instruction, when executed by the at least one processor, causes the at least one processor to execute the method according to claim 11 .

20 . A communication device, comprising:

at least one processor; and

a memory communicatively connected to the at least one processor, wherein

the memory stores an instruction executable by the at least one processor, and the instruction, when executed by the at least one processor, causes the communication device:

transmit a plurality of sweeping beams to a reception terminal;

receive at least one beam identifier, wherein the at least one beam identifier is determined according to signal quality of the plurality of sweeping beams; and

determine a target sweeping beam based on the at least one beam identifier, and determining an angle of departure (AOD) of a transmission terminal based on the target sweeping beam, wherein the AOD of the transmission terminal is equal to a beam azimuth angle of the target sweeping beam;

wherein the instruction, when executed by the at least one processor, further causes the communication device to:

transmit a capability negotiation inquiry to the reception terminal, wherein the capability negotiation inquiry is configured to negotiate whether the reception terminal supports AOD angle measurement based on beams; and

receive a capability negotiation inquiry response transmitted from the reception terminal, wherein the negotiation inquiry response is configured to indicate whether the reception terminal supports the AOD angle measurement based on beams.