Information transmission method for sidelink, and user equipment and computer-readable storage medium
Disclosed are an information transmission method for a sidelink, and a user equipment and a computer-readable storage medium. The method comprises: detecting a control channel indication sequence at a pre-set position of each time slot; and based on the detected control channel indication sequence, determining, in the time slot where the sequence is located, a time-frequency resource position where a corresponding physical sidelink control channel is located, wherein the control channel indication sequences correspond to the physical sidelink control channels on a one-to-one basis. By applying the solution, an actual time-frequency resource position of a PSCCH can be indicated to a UE in a sidelink of an NR system.
1. An information transmission method for a sidelink, comprising:
detecting control channel indication sequences at a pre-set position of each time slot; and
according to the control channel indication sequences, determining time-frequency resource positions of Physical Sidelink Control Channels (PSCCHs) corresponding to the control channel indication sequences in the time slot, wherein the control channel indication sequences have a one-to-one corresponding relationship with the PSCCHs;
wherein a frequency domain length of the control channel indication sequences is less than or equal to a minimum length of a minimum frequency domain unit configured for Physical Sidelink Shared Channels (PSSCHs) associated with the PSCCHs.
2. The information transmission method for a sidelink according to claim 1 , wherein detecting control channel indication sequences at a pre-set position of each time slot comprises:
detecting the control channel indication sequences on a pre-set symbol of each time slot.
3. The information transmission method for a sidelink according to claim 2 , wherein the pre-set symbol comprises one of:
a first symbol of the time slot;
a previous symbol of the PSCCHs in the time slot; and
a first symbol of the time slot which is a previous symbol of the PSCCHs.
4. The information transmission method for a sidelink according to claim 1 , wherein the frequency domain length of the control channel indication sequences is p minimum frequency domain units, where p is a positive integer;
and frequency domain resource positions where the control channel indication sequences are located, are first p minimum frequency domain units or last p minimum frequency domain units of the PSSCHs associated with the PSCCHs.
5. The information transmission method for a sidelink according to claim 1 , wherein a start position of the frequency domain resources where the control channel indication sequences are located is in a middle minimum frequency domain unit of the PSSCHs associated with the PSCCHs.
6. The information transmission method for a sidelink according to claim 2 , wherein detecting the control channel indication sequences on a pre-set symbol of each time slot comprises:
at the pre-set position of each time slot, determining the control channel indication sequences transmitted on different resource blocks according to a pre-set frequency comb parameter; and
determining the control channel indication sequences multiplexed on a same resource block according to a pre-set cyclic shift parameter or a pre-set orthogonal cover code parameter.
7. The information transmission method for a sidelink according to claim 2 , wherein when the pre-set symbol is a previous symbol of the PSCCHs, the PSCCHs corresponding to the control channel indication sequences are located on any symbol of the time slot and within a frequency domain range of the control channel indication sequences.
8. The information transmission method for a sidelink according to claim 1 , wherein according to the control channel indication sequences, determining time-frequency resource positions of PSCCHs corresponding to the control channel indication sequences in the time slot comprises:
according to the control channel indication sequences, determining a time-frequency resource range of the PSCCHs in the time slot; and
within the time-frequency resource range, performing blind detection according to a pre-set detection parameter to determine the time-frequency resource positions of the PSCCHs corresponding to the control channel indication sequences in the time slot.
9. The information transmission method for a sidelink according to claim 1 , further comprising:
detecting a sidelink control information at the time-frequency resource positions of the PSCCHs corresponding to the control channel indication sequences; and
according to the sidelink control information, determining a time-frequency resource position of an actually used Physical Sidelink Feedback Channel (PSFCH) in PSFCHs corresponding to the time-frequency resource positions of the PSCCHs.
10. The information transmission method for a sidelink according to claim 9 , wherein according to the sidelink control information, determining a time-frequency resource position of an actually used Physical Sidelink Feedback Channel (PSFCH) among PSFCHs corresponding to the time-frequency resource positions of the PSCCHs comprises:
according to a time-domain offset information in the sidelink control information and an identification information of the actually used PSFCH, determining the time-frequency resource position of the actually used PSFCH among the PSFCHs corresponding to the time-frequency resource positions of the PSCCHs; and
the PSFCHs corresponding to the time-frequency resource positions of the PSCCHs use independent time-frequency resource positions within the time-frequency resource range of the PSSCHs associated with the PSCCHs.
11. The information transmission method for a sidelink according to claim 9 , wherein according to the sidelink control information, determining a time-frequency resource position of an actually used Physical Sidelink Feedback Channel (PSFCH) among PSFCHs corresponding to the time-frequency resource positions of the PSCCHs comprises:
according to a frequency domain offset information, a time domain offset information and an identification information of the actually used PSFCH, determining the time-frequency resource position of the actually used PSFCH among the PSFCHs corresponding to the time-frequency resource positions of the PSCCHs; and
wherein the PSFCHs corresponding to the time-frequency resource positions of the PSCCHs share time-frequency resource positions within the time-frequency resource range of the PSSCHs associated with the PSCCHs.
12. The information transmission method for a sidelink according to claim 9 , further comprising:
when a Sidelink Feedback Control Information (SFCI) and a transmission data need to be sent at the same time, determining an order of sending the SFCI and the transmission data according to pre-configured transmission priorities.
13. The information transmission method for a sidelink according to claim 12 , wherein the transmission priorities are configured based on at least one of following factors:
a number of carriers which are able to be simultaneously transmitted by a sending User Equipment (UE) and a receiving UE;
a related configuration of a carrier combination of the sending UE and the receiving UE; and
a callback time of radio frequency receiving and sending of the sending UE and the receiving UE.
14. A User Equipment (UE), comprising:
a first detection circuitry, adapted to detect control channel indication sequences at a pre-set position of each time slot; and
a first determination circuitry, adapted to, according to the control channel indication sequences, determine time-frequency resource positions of PSCCHs corresponding to the control channel indication sequences in the time slot, wherein the control channel indication sequences have a one-to-one corresponding relationship with the PSCCHs;
wherein a frequency domain length of the control channel indication sequences is less than or equal to a minimum length of a minimum frequency domain unit configured for Physical Sidelink Shared Channels (PSSCHs) associated with the PSCCHs.
15. The UE according to claim 14 , further comprising:
a second detection circuitry, adapted to detect a sidelink control information at the time-frequency resource positions of the PSCCHs corresponding to the control channel indication sequences; and
a second determination circuitry, adapted to, according to the sidelink control information, determine a time-frequency resource position of an actually used Physical Sidelink Feedback Channel (PSFCH) in PSFCHs corresponding to the time-frequency resource positions of the PSCCHs.
16. The UE according to claim 14 , further comprising:
a transmission control circuitry, adapted to, when a Sidelink Feedback Control Information (SFCI) and a transmission data need to be sent at the same time, determine an order of sending the SFCI and the transmission data according to pre-configured transmission priorities.
17. The UE according to claim 16 , wherein the transmission priorities are configured based on at least one of following factors:
a number of carriers which are able to be simultaneously transmitted by a sending User Equipment (UE) and a receiving UE;
a related configuration of a carrier combination of the sending UE and the receiving UE; and
a callback time of radio frequency receiving and sending of the sending UE and the receiving UE.
18. A non-transitory storage medium having computer instructions stored therein, wherein once the computer instructions are executed, the method according to claim 1 is performed.
19. A user equipment comprising a memory and a processor is provided, wherein the memory stores one or more programs, the one or more programs comprising computer instructions, when executed by the processor, cause the processor to:
detect control channel indication sequences at a pre-set position of each time slot; and
according to the control channel indication sequences, determine time-frequency resource positions of Physical Sidelink Control Channels (PSCCHs) corresponding to the control channel indication sequences in the time slot, wherein the control channel indication sequences have a one-to-one corresponding relationship with the PSCCHs,
wherein a frequency domain length of the control channel indication sequences is less than or equal to a minimum length of a minimum frequency domain unit configured for Physical Sidelink Shared Channels (PSSCHs) associated with the PSCCHs.