Sidelink resource multiplexing and indication methods and apparatuses thereof
Embodiments of this disclosure provide sidelink resource multiplexing and indication methods and apparatuses thereof. The method includes: receiving by a second device length information indicating a length of a first part in a slot transmitted by a terminal equipment or a network device; and performing transmission and/or reception of sidelink information by the second device with a first device according to the length information. Hence, the second device is able to process the first part according to the length information, thereby improving performance of sidelink transmission.
1. A sidelink resource multiplexing apparatus, comprising:
a memory that stores a plurality of instructions; and
a processor coupled to the memory and configured to execute the instructions to:
perform transmission and/or reception of physical sidelink feedback channel (PSFCH), and perform transmission and/or reception of physical sidelink control channel (PSCCH) and/or physical sidelink shared channel (PSSCH); and
multiplex PSFCH and PSCCH/PSSCH in a predefined time division multiplexing (TDM) manner, wherein the predefined time division multiplexing (TDM) manner comprises when PSFCH of a first terminal device and PSFCH of a second terminal device are in the same slot, PSFCH durations are the same.
2. The apparatus according to claim 1 , wherein a terminal device with ACK/NACK disabled acquires a PSFCH duration of a terminal device with ACK/NACK enabled, and performs transmission and/or reception of PSCCH/PSSCH according to the PSFCH duration.
3. The apparatus according to claim 1 , wherein the processor is further configured to acquire length information indicating a length of a first part in a slot, and perform automatic gain control on the first part according to the length information.
4. The apparatus according to claim 3 , wherein the length information comprises at least one of the following: a length of a physical sidelink feedback channel, a slot length to which a numerology corresponds, or a length of a mini-slot.
5. The apparatus according to claim 3 , wherein the length information is configured by at least one of the following: radio resource control signaling, system information, sidelink control information, or downlink control information.
6. The apparatus according to claim 5 , wherein a cyclic redundancy check code of sidelink control information is scrambled by using a common identifier;
and the sidelink control information indicates at least one of the following: a length of a physical sidelink feedback channel, a slot at which a physical sidelink feedback channel is present, a symbol where a physical sidelink feedback channel is located, a resource block where a physical sidelink feedback channel is located, a slot at which a physical sidelink shared channel is present, a symbol where a physical sidelink shared channel is located, or a resource block where a physical sidelink shared channel is located.
7. The apparatus according to claim 3 , wherein one or more symbols preceding the first part in the slot carry/carries information used for the automatic gain control, and one or more symbols preceding the first part in the slot is/are taken as guard interval(s).
8. The apparatus according to claim 3 , wherein the slot at least further comprises a second part, and one or more symbols preceding the second part in the slot carry/carries information used for the automatic gain control and/or is/are taken as guard interval(s).
9. The apparatus according to claim 3 , wherein the first part in the slot is configured with a first demodulation reference signal, and another part in the slot is at least configured with a second demodulation reference signal.
10. The apparatus according to claim 9 , wherein the first demodulation reference signal and/or the second demodulation reference signal is/are configured or preconfigured or predefined as being related to a time-frequency resource or a group of time-frequency resources, the time-frequency resource(s) containing one or more slots in time domain, and containing one or more resource blocks in frequency domain.
11. The apparatus according to claim 10 , wherein the time-frequency resource(s) is/are configured by at least one of the following: radio resource control signaling, system information, sidelink control information, or downlink control information.
12. The apparatus according to claim 10 , wherein the time-frequency resource(s) comprise(s) at least one of the following: a reception resource pool, a transmission resource pool, a bandwidth part, a carrier, or a component carrier.
13. The apparatus according to claim 1 , wherein a PSFCH duration and/or a PSFCH slot are/is configured or preconfigured or predefined as being related to a time-frequency resource or a group of time-frequency resources, the time-frequency resource(s) containing one or more slots in time domain, and containing one or more resource blocks in frequency domain.
14. The apparatus according to claim 13 , wherein the time-frequency resource(s) is/are configured by at least one of the following: radio resource control signaling, system information, sidelink control information, or downlink control information.
15. The apparatus according to claim 13 , wherein the time-frequency resource(s) comprise(s) at least one of the following: a reception resource pool, a transmission resource pool, a bandwidth part, a carrier, or a component carrier.
16. The apparatus according to claim 1 , wherein a PSFCH duration is predefined.
17. The apparatus according to claim 1 , wherein in a case where at least two types of transmit power are needed in a slot, a maximum transmit power in the at least two types of transmit power is taken as the transmit power of the slot.
18. A sidelink resource multiplexing method, comprising:
performing, by a terminal device, transmission and/or reception of physical sidelink feedback channel (PSFCH), and performing transmission and/or reception of physical sidelink control channel (PSCCH) and/or physical sidelink shared channel (PSSCH); and
multiplexing PSFCH and PSCCH/PSSCH in a predefined time division multiplexing (TDM) manner, wherein the predefined time division multiplexing (TDM) manner comprises when PSFCH of a first terminal device and PSFCH of a second terminal device are in the same slot, PSFCH durations are the same.
19. A communication system, comprising:
a terminal device configured to:
perform transmission and/or reception of physical sidelink feedback channel (PSFCH), and perform transmission and/or reception of physical sidelink control channel (PSCCH) and/or physical sidelink shared channel (PSSCH); and
multiplex PSFCH and PSCCH/PSSCH in a predefined time division multiplexing (TDM) manner, wherein the predefined time division multiplexing (TDM) manner comprises when PSFCH of a first terminal device and PSFCH of a second terminal device are in the same slot, PSFCH durations are the same.