Communications method and apparatus
A communications method and apparatus are provided. The method includes: receiving first configuration information, where the first configuration information is used to configure a first bandwidth part (BWP); and sending sidelink data on a resource included in a first transmission resource pool, where a frequency range of the first transmission resource pool is included in a frequency range of the first BWP and a frequency range of a second BWP, and the second BWP is an activated uplink BWP. The communications method and apparatus in this application can implement terminal device communication on the first BWP and the second BWP, and reduce a time of switching between the first BWP and the second BWP, thereby improving efficiency of the communication on the first BWP and the second BWP.
1. An apparatus comprising:
one or more processors;
a non-transitory memory coupled to the one or more processors, wherein the non-transitory memory stores a program to be executed by the one or more processors, the program including instructions for:
receiving first configuration information, wherein the first configuration information is used to configure a first bandwidth part (BWP);
determining a frequency range of a first transmission resource pool to be within a frequency range of the first BWP and a frequency range of a second BWP, wherein the second BWP is an activated uplink BWP; and
sending sidelink data on a resource comprised in the first transmission resource pool.
2. The apparatus according to claim 1 , wherein the first configuration information comprises a configuration of a transmission resource pool of the first BWP, and a frequency range of the transmission resource pool of the first BWP is within the frequency range of the first BWP.
3. The apparatus according to claim 1 , wherein the first configuration information comprises a configuration of a transmission resource pool of the first BWP, and a frequency range of the transmission resource pool of the first BWP is within the frequency range of the first BWP and the frequency range of the second BWP.
4. The apparatus according to claim 1 , wherein the program further includes instructions for:
reporting information about a bandwidth capability, wherein the bandwidth capability comprises a transmit bandwidth capability and a receive bandwidth capability.
5. The apparatus according to claim 4 , wherein a bandwidth of the first BWP satisfies one of the following conditions:
the bandwidth of the first BWP is less than or equal to a maximum value in the transmit bandwidth capability and the receive bandwidth capability;
the bandwidth of the first BWP is less than or equal to a minimum value in the transmit bandwidth capability and the receive bandwidth capability; or
the bandwidth of the first BWP is less than or equal to the receive bandwidth capability.
6. The apparatus according to claim 1 , wherein frequency centers of the first BWP and the second BWP are equal.
7. The apparatus according to claim 1 , wherein the program further includes instructions for:
sending uplink data on the second BWP.
8. An apparatus, comprising:
one or more processors;
a non-transitory memory coupled to the one or more processors, wherein the non-transitory memory stores a program to be executed by the one or more processors, the program including instructions for:
sending first configuration information, wherein the first configuration information is used to configure a first bandwidth part (BWP); and
sending first indication information, wherein the first indication information indicates a sidelink resource, the sidelink resource is comprised in a first transmission resource pool, and wherein the first indication information is used to determine the first transmission pool, a frequency range of the first transmission resource pool is within a frequency range of the first BWP and a frequency range of a second BWP, and the second BWP is an activated uplink BWP.
9. The apparatus according to claim 8 , wherein the first configuration information comprises a configuration of a transmission resource pool of the first BWP, and a frequency range of the transmission resource pool of the first BWP is within the frequency range of the first BWP.
10. The apparatus according to claim 8 , wherein the first configuration information comprises a configuration of a transmission resource pool of the first BWP, and a frequency range of the transmission resource pool of the first BWP is within the frequency range of the first BWP and the frequency range of the second BWP.
11. The apparatus according to claim 8 , wherein the program further includes instructions for:
obtaining information about a bandwidth capability, wherein the bandwidth capability comprises a transmit bandwidth capability and a receive bandwidth capability.
12. The apparatus according to claim 11 , wherein a bandwidth of the first BWP satisfies one of the following conditions:
the bandwidth of the first BWP is less than or equal to a maximum value in the transmit bandwidth capability and the receive bandwidth capability;
the bandwidth of the first BWP is less than or equal to a minimum value in the transmit bandwidth capability and the receive bandwidth capability; or
the bandwidth of the first BWP is less than or equal to the receive bandwidth capability.
13. The apparatus according to claim 8 , wherein the program further includes instructions for:
sending second indication information, wherein the second indication information indicates an uplink resource, and the second BWP comprises the uplink resource.
14. The apparatus according to claim 8 , wherein frequency centers of the first BWP and the second BWP are equal.
15. A method applied to a communication apparatus, the method comprising:
sending first configuration information, wherein the first configuration information is used to configure a first bandwidth part (BWP); and
sending first indication information, wherein the first indication information indicates a sidelink resource, the sidelink resource is comprised in a first transmission resource pool, and wherein the first indication information is used to determine the first transmission pool, a frequency range of the first transmission resource pool is within a frequency range of the first BWP and a frequency range of a second BWP, and the second BWP is an activated uplink BWP.
16. The method according to claim 15 , wherein the first configuration information comprises a configuration of a transmission resource pool of the first BWP, and a frequency range of the transmission resource pool of the first BWP is within the frequency range of the first BWP and the frequency range of the second BWP.
17. The method according to claim 15 , further comprising:
obtaining information about a bandwidth capability, wherein the bandwidth capability comprises a transmit bandwidth capability and a receive bandwidth capability.
18. The method according to claim 17 , wherein a bandwidth of the first BWP satisfies one of the following conditions:
the bandwidth of the first BWP is less than or equal to a maximum value in the transmit bandwidth capability and the receive bandwidth capability;
the bandwidth of the first BWP is less than or equal to a minimum value in the transmit bandwidth capability and the receive bandwidth capability; or
the bandwidth of the first BWP is less than or equal to the receive bandwidth capability.
19. The method according to claim 15 , wherein the method further comprises:
sending second indication information, wherein the second indication information indicates an uplink resource, and the second BWP comprises the uplink resource.
20. The method according to claim 15 , wherein frequency centers of the first BWP and the second BWP are equal.