Signal transmission method, terminal device and network device for resource reservation

1. A method for signal transmission, comprising:

receiving, by a terminal device, downlink control information (DCI), wherein the DCI carries resource reservation indication information, and the resource reservation indication information indicates to the terminal device whether one of a plurality of physical resources is to be reserved in a time-domain resource unit; and

determining, by the terminal device, a first physical resource used for transmitting a first signal in the time-domain resource unit according to the resource reservation indication information, or determining a second physical resource used for an uplink and downlink guard period in the time-domain resource unit according to the resource reservation indication information,

wherein the downlink control information is common downlink control information, the common downlink control information is information transmitted in a common search space of a downlink control channel.

2. The method according to claim 1 , wherein the DCI is used for indicating the terminal device to transmit the first signal through the time-domain resource unit.

3. The method according to claim 1 , wherein when the resource reservation indication information indicates to the terminal device that one of the plurality of physical resources is to be reserved in the time-domain resource unit, the resource reservation indication information comprises a location of the physical resource that the terminal device is to reserve, or a size of the physical resource that the terminal device is to reserve, or a location of the physical resource that the terminal device is to reserve and a size of the physical resource that the terminal device is to reserve.

4. The method according to claim 1 , wherein when the resource reservation indication information indicates to the terminal device that one of the plurality of physical resources is to be reserved in the time-domain resource unit, determining, by the terminal device, the first physical resource used for transmitting the first signal in the time-domain resource unit, or determining the second physical resource used for the uplink and downlink guard period in the time-domain resource unit according to the resource reservation indication information, comprises:

determining, by the terminal device, a physical resource to be reserved in the time-domain resource unit according to the resource reservation indication information; and

determining, by the terminal device, the first physical resource or the second physical resource in other physical resources except the reserved physical resource in the time-domain resource unit.

5. The method according to claim 1 , wherein the method further comprises:

performing, by the terminal device, rate matching processing or puncturing processing on the first signal according to the first physical resource; and

transmitting, by the terminal device, the first signal on which the rate matching processing or puncturing processing is performed.

6. The method according to claim 1 , wherein the first signal is a physical uplink shared channel (PUSCH), or a physical uplink control channel (PUCCH), or a physical downlink control channel (PDCCH), or a physical downlink shared channel (PDSCH), or a sounding reference signal (SRS), or a channel state indication reference signal (CSI-RS), or a demodulation reference signal (DMRS), or a phase tracking signal (PTS), or a beam reference signal (BRS).

7. The method according to claim 1 , wherein determining, by the terminal device, the second physical resource used for the uplink and downlink guard period in the time-domain resource unit according to the resource reservation indication information, comprises:

determining, by the terminal device, a location of the uplink and downlink guard period, or a length of the uplink and downlink guard period, or a location of the uplink and downlink guard period and a length of the uplink and downlink guard period, in the time-domain resource unit according to the resource reservation indication information.

8. A method for signal transmission, comprising:

determining, by a network device, downlink control information (DCI), wherein the downlink control information carries resource reservation indication information, and the resource reservation indication information indicates to a terminal device whether one of a plurality of physical resources is to be reserved in a time-domain resource unit; and

sending, by the network device, the downlink control information to the terminal device, so that the terminal device determines a first physical resource used for transmitting a first signal in the time-domain resource unit according to the resource reservation indication information, or determines a second physical resource used for an uplink and downlink guard period in the time-domain resource unit according to the resource reservation indication information,

wherein the downlink control information is common downlink control information, the common downlink control information is information transmitted in a common search space.

9. The method according to claim 8 , wherein when the resource reservation indication information indicates to the terminal device that one of the plurality of physical resources is to be reserved in the time-domain resource unit, the resource reservation indication information comprises a location of the physical resource that the terminal device is to reserve, or a size of the physical resource that the terminal device is to reserve, or a location of the physical resource that the terminal device is to reserve and a size of the physical resource that the terminal device is to reserve.

10. A terminal device comprising:

a transceiver, used for receiving downlink control information (DCI), wherein the DCI carries resource reservation indication information, and the resource reservation indication information indicates to the terminal device whether one of a plurality of physical resources is to be reserved in a time-domain resource unit; and

a processor, used for determining a first physical resource used for transmitting a first signal in the time-domain resource unit according to the resource reservation indication information, or determining a second physical resource used for an uplink and downlink guard period in the time-domain resource unit according to the resource reservation indication information,

wherein the downlink control information is common downlink control information, the common downlink control information is information transmitted in a common search space.

11. The terminal device according to claim 10 , wherein the DCI is used for indicating the terminal device to transmit the first signal through the time-domain resource unit.

12. The terminal device according to claim 10 , wherein when the resource reservation indication information indicates to the terminal device that one of the plurality of physical resources is to be reserved in the time-domain resource unit, the resource reservation indication information comprises a location of the physical resource that the terminal device is to reserve, or a size of the physical resource that the terminal device is to reserve, or a location of the physical resource that the terminal device is to reserve and a size of the physical resource that the terminal device is to reserve.

13. The terminal device according to claim 10 , wherein when the resource reservation indication information indicates to the terminal device that one of the plurality of physical resources is to be reserved in the time-domain resource unit, the processor is specifically used for:

determining a physical resource to be reserved in the time-domain resource unit according to the resource reservation indication information; and

determining the first physical resource or the second physical resource in other physical resources except the reserved physical resource in the time-domain resource unit.

14. The terminal device according to claim 10 , wherein the processor is further used for performing rate matching processing or puncturing processing on the first signal according to the first physical resource; and

the transceiver is further used for transmitting the first signal on which the rate matching processing or puncturing processing is performed.

15. The terminal device according to claim 10 , wherein the first signal is a physical uplink shared channel (PUSCH), or a physical uplink control channel (PUCCH), or a physical downlink control channel (PDCCH), or a physical downlink shared channel (PDSCH), or a sounding reference signal (SRS), or a channel state indication reference signal (CSI-RS), or a demodulation reference signal (DMRS), or a phase tracking signal (PTS), or a beam reference signal (BRS).

16. The terminal device according to claim 10 , wherein the processor is specifically used for:

determining a location of the uplink and downlink guard period, or a length of the uplink and downlink guard period, or a location of the uplink and downlink guard period and a length of the uplink and downlink guard period, in the time-domain resource unit according to the resource reservation indication information.

17. A network device for signal transmission, comprising:

a processor, used for determining downlink control information (DCI), wherein the downlink control information carries resource reservation indication information, and the resource reservation indication information indicates to a terminal device whether one of a plurality of physical resources is to be reserved in a time-domain resource unit; and

a transceiver, used for sending downlink control information determined by the processor to the terminal device, so that the terminal device determines a first physical resource used for transmitting a first signal in the time-domain resource unit according to the resource reservation indication information, or determines a second physical resource used for an uplink and downlink guard period in the time-domain resource unit according to the resource reservation indication information,

wherein the downlink control information is common downlink control information, the common downlink control information is information transmitted in a common search space.

18. The network device according to claim 17 , wherein when the resource reservation indication information indicates to the terminal device whether one of the plurality of physical resources is to be reserved in the time-domain resource unit, the resource reservation indication information comprises a location of the physical resource that the terminal device is to reserve, or a size of the physical resource that the terminal device is to reserve, or a location of the physical resource that the terminal device is to reserve and a size of the physical resource that the terminal device is to reserve.