Resource configuration method and apparatus
Embodiments of this application provide a resource configuration method and apparatus, so as to improve resource utilization during D2D communication. A first terminal device receives scheduling information that is sent by a network device and that is used to indicate an uplink time-frequency resource used for the first terminal device, and the first terminal device can multiplex the uplink time-frequency resource to send a sidelink signal to a second terminal device when an interference value to the network device during sending of the sidelink signal meets a first rule. Therefore, the uplink time-frequency resource of the first terminal device is multiplexed while interference is considered during sidelink transmission, thereby improving resource utilization.
1. A resource configuration method comprising:
receiving, by a first terminal device, scheduling information sent by a network device, wherein the scheduling information indicates an uplink time-frequency resource for universal user (Uu) and device-to-device (sidelink) transmission; and
multiplexing sending, by the first terminal device, a Uu transmission and a sidelink to the network device and a second terminal device, respectively, on the uplink time-frequency resource, in response to an interference value of the Uu transmission to the network device meeting a first rule,
wherein the interference value is based on an amount of attenuation in a channel between the network device and the first terminal device and a transmit power for sending the sidelink signal by the first terminal device,
wherein the amount of attenuation of the channel is based on a transmit power of the network device and a downlink received signal power of the first terminal device, and
wherein the downlink received signal power is obtained from a measurement of a demodulation reference signal (DMRS) associated with the scheduling information.
2. The method according to claim 1 , wherein the first rule is that the interference value is less than an interference threshold.
3. The method according to claim 2 , wherein the interference threshold is carried in the scheduling information.
4. The method according to claim 2 , wherein the interference threshold is determined based on a first priority and a second priority, wherein the first priority is a priority of uplink data transmitted on the uplink time-frequency resource, and wherein the second priority is a priority of sidelink data sent by the first terminal device to the second terminal device.
5. The method according to claim 1 , wherein the uplink time-frequency resource is on an unlicensed frequency band, and sending, by the first terminal device, the sidelink to the second terminal device on the uplink time-frequency resource comprises:
sending, by the first terminal device, the sidelink to the second terminal device on the uplink time-frequency resource after listen before talk (LBT) succeeds on the uplink time-frequency resource.
6. The method according to claim 1 , wherein the first terminal device is located in one or more terminal device groups, wherein the scheduling information carries an identifier of the one or more terminal device groups, and wherein the identifier indicates a terminal device group that multiplexes the uplink time-frequency resource.
7. The method according to claim 1 , wherein sending, by the first terminal device, the sidelink signal to the second terminal device on the uplink time-frequency resource in response to the interference value to the network device during sending of the sidelink meeting the first rule comprises:
sending, by the first terminal device, the sidelink to the second terminal device on the uplink time-frequency resource in response to the interference value to the network device during sending of the sidelink meeting the first rule and a priority of the first terminal device meeting a second rule.
8. A resource configuration apparatus comprising:
a processor; and
a memory coupled to the processor and having processor-readable instructions stored thereon, which are executed by the processor and cause the apparatus to:
receive scheduling information sent by a network device, wherein the scheduling information indicates an uplink time-frequency resource for universal user (Uu) and device-to-device (sidelink) transmission; and
multiplex sending a Uu transmission and a sidelink to the network device and a second terminal device, respectively, on the uplink time-frequency resource, in response to an interference value of the Uu transmission to the network device meeting a first rule,
wherein the interference value is based on an amount of attenuation in a channel between the network device and the first terminal device and a transmit power for sending the sidelink signal by the first terminal device,
wherein the amount of attenuation of the channel is based on a transmit power of the network device and a downlink received signal power of the first terminal device, and
wherein the downlink received signal power is obtained from a measurement of a demodulation reference signal (DMRS) associated with the scheduling information.
9. The apparatus according to claim 8 , wherein the first rule is that the interference value is less than an interference threshold.
10. The apparatus according to claim 9 , wherein the interference threshold is carried in the scheduling information.
11. The apparatus according to claim 9 , wherein the interference threshold is determined based on a first priority and a second priority, wherein the first priority is a priority of uplink data transmitted on the uplink time-frequency resource, and wherein the second priority is a priority of sidelink data sent by the apparatus to the second terminal device.
12. The apparatus according to claim 8 , wherein the uplink time-frequency resource is on an unlicensed frequency band, and the instruction of sending the sidelink to the second terminal device on the uplink time-frequency resource further includes:
sending the sidelink to the second terminal device on the uplink time-frequency resource after listen before talk (LBT) succeeds on the uplink time-frequency resource.
13. The apparatus according to claim 8 , wherein the first terminal device is located in one or more terminal device groups, wherein the scheduling information carries an identifier of the one or more terminal device groups, and wherein the identifier indicates a terminal device group that multiplexes the uplink time-frequency resource.
14. The apparatus according to claim 8 , wherein the instruction of sending the sidelink to the second terminal device on the uplink time-frequency resource further includes:
sending the sidelink to the second terminal device on the uplink time-frequency resource in response to the interference value to the network device during sending of the sidelink meeting the first rule and a priority of the first terminal device meeting a second rule.
15. The apparatus according to claim 8 , wherein the apparatus is a chip or a first terminal device.
16. A non-transitory computer-readable storage medium, storing computer-executable instructions, that are read and executed by one or more processors of a first terminal device, and cause the one or more processors to implement a resource configuration method comprising:
receiving, scheduling information sent by a network device, wherein the scheduling information indicates an uplink time-frequency resource for universal user (Uu) and device-to-device (sidelink) transmission; and
multiplexing sending a Uu transmission and a sidelink to the network device and a second terminal device, respectively, on the uplink time-frequency resource, in response to an interference value of the Uu transmission to the network device meeting a first rule,
wherein the interference value is based on an amount of attenuation in a channel between the network device and the first terminal device and a transmit power for sending the sidelink signal by the first terminal device,
wherein the amount of attenuation of the channel is based on a transmit power of the network device and a downlink received signal power of the first terminal device, and
wherein the downlink received signal power is obtained from a measurement of a demodulation reference signal (DMRS) associated with the scheduling information.
17. The non-transitory computer-readable storage medium according to claim 16 including further computer-executable instructions, that are read and executed by the one or more processors of the first terminal device, and further cause the one or more processors to implement a resource configuration method wherein the first rule is that the interference value is less than an interference threshold.
18. The non-transitory computer-readable storage medium according to claim 16 including further computer-executable instructions, that are read and executed by the one or more processors of the first terminal device, and further cause the one or more processors to implement a resource configuration method wherein the uplink time-frequency resource is on an unlicensed frequency band, and sending the sidelink to the second terminal device on the uplink time-frequency resource comprises:
sending, by the first terminal device, the sidelink to the second terminal device on the uplink time-frequency resource after listen before talk (LBT) succeeds on the uplink time-frequency resource.
19. The non-transitory computer-readable storage medium according to claim 16 including further computer-executable instructions, that are read and executed by the one or more processors of the first terminal device, and further cause the one or more processors to implement a resource configuration method wherein the first terminal device is located in one or more terminal device groups, wherein the scheduling information carries an identifier of the one or more terminal device groups, and wherein the identifier indicates a terminal device group that multiplexes the uplink time-frequency resource.
20. The non-transitory computer-readable storage medium according to claim 16 including further computer-executable instructions, that are read and executed by the one or more processors of the first terminal device, and further cause the one or more processors to implement a resource configuration method wherein sending the sidelink to the second terminal device on the uplink time-frequency resource in response to the interference value to the network device during sending of the sidelink meets the first rule and a priority of the first terminal device meets a second rule.