Method and device used in node for wireless communication

1. A first node used for wireless communications, comprising:

a first receiver, which receives first information, the first information indicating a first symbol set, the first information comprises one or more fields in a Radio Resource Control (RRC) Information Element (IE), the first symbol set comprises a plurality of multicarrier symbols, the plurality of multicarrier symbols comprised by the first symbol set is used for transmitting Sidelink Control Information (SCI); and

a first transmitter, which transmits a first signaling in a first symbol group, the first signaling is SCI, the first symbol group comprises a Physical Sidelink Control Channel (PSCCH);

the first transmitter, which also transmits a first radio signal in a second symbol group, the first radio signal is transmitted through a Physical Sidelink Shared Channel (PSSCH), the second symbol group comprises a PSSCH;

wherein the first symbol group belongs to the first symbol set; the first signaling indicates the second symbol group, the second symbol group comprising a plurality of multicarrier symbols; at least one multicarrier symbol of the plurality of multicarrier symbols comprised by the second symbol group belongs to the first symbol set and is used for transmitting SCI, and at least one multicarrier symbol of the plurality of multicarrier symbols comprised by the second symbol group does not belong to the first symbol set and is used for transmitting a Sidelink Shared Channel (SL-SCH); a first bit sequence is used for generating the first radio signal, and the first bit sequence comprises a first bit sub-sequence and a second bit sub-sequence, and an order of the first bit sub-sequence in the first bit sequence is prior to that of the second bit sub-sequence in the first bit sequence; the first bit sub-sequence is mapped onto one or more multicarrier symbols in the second symbol group belonging to the first symbol set, while the second bit sub-sequence is mapped onto one or more multicarrier symbols in the second symbol group; the first bit sequence comprises one or more fields in a piece of SCI and a Transport Block (TB).

2. The first node according to claim 1 , wherein the second symbol group belongs to a second symbol set; the second symbol set comprises the first symbol set, the second symbol set comprises a plurality of multicarrier symbols, at least one of the plurality of multicarrier symbols comprised by the second symbol set does not belong to the first symbol set, and each of the plurality of multicarrier symbols comprised by the second symbol set is an Uplink (UL) symbol.

3. The first node according to claim 1 , wherein the second symbol set is obtained by the first node through Resource Selection or the first node according to claim 1 , comprising:

the first receiver receiving a second signaling, wherein the second signaling indicates the second symbol set, the second signaling comprises one or more fields in a Medium Access Control (MAC) Control Element (CE), and the second signaling is transmitted through a PSSCH.

4. The first node according to claim 3 , comprising:

the first receiver detecting first target information in a third symbol group, the first target information comprises either HARQ-ACK or HARQ-NACK, the first target information comprises a second sequence, the third symbol group comprises a Physical Sidelink Feedback Channel (PSFCH);

wherein the first target information indicates whether the first radio signal is correctly decoded; the first symbol group is used for determining the third symbol group.

5. The first node according to claim 4 , wherein the second symbol group comprises a first symbol sub-group and a second symbol sub-group, the first symbol sub-group comprises each multicarrier symbol in the second symbol group that belongs to the first symbol set; the second symbol sub-group comprises each multicarrier symbol in the second symbol group that does not belong to the first symbol set; the first bit sub-sequence is sequentially mapped into multicarrier symbols comprised by the first symbol sub-group in chronological order.

6. A second node used for wireless communications, comprising:

a second receiver, which receives first information, the first information indicating a first symbol set, the first information comprises one or more fields in a Radio Resource Control (RRC) Information Element (IE), the first symbol set comprises a plurality of multicarrier symbols, the plurality of multicarrier symbols comprised by the first symbol set is used for transmitting Sidelink Control Information (SCI); and

the second receiver, which monitors a first signaling in a first symbol group, the first signaling is SCI, the first symbol group comprises a Physical Sidelink Control Channel (PSCCH);

the second receiver, which receives a first radio signal in a second symbol group when the first signaling is detected, the first radio signal is transmitted through a Physical Sidelink Shared Channel (PSSCH), the second symbol group comprises a PSSCH;

wherein the first symbol group belongs to the first symbol set; the first signaling indicates the second symbol group, the second symbol group comprising a plurality of multicarrier symbols; at least one multicarrier symbol of the plurality of multicarrier symbols comprised by the second symbol group belongs to the first symbol set and is used for transmitting SCI, and at least one multicarrier symbol of the plurality of multicarrier symbols comprised by the second symbol group does not belong to the first symbol set and is used for transmitting a Sidelink Shared Channel (SL-SCH); a first bit sequence is used for generating the first radio signal, and the first bit sequence comprises a first bit sub-sequence and a second bit sub-sequence, and an order of the first bit sub-sequence in the first bit sequence is prior to that of the second bit sub-sequence in the first bit sequence; the first bit sub-sequence is mapped onto one or more multicarrier symbols in the second symbol group belonging to the first symbol set, while the second bit sub-sequence is mapped onto one or more multicarrier symbols in the second symbol group; the first bit sequence comprises one or more fields in a piece of SCI and a Transport Block (TB).

7. The first node according to claim 6 , wherein the second symbol group belongs to a second symbol set; the second symbol set comprises the first symbol set, the second symbol set comprises a plurality of multicarrier symbols, at least one of the plurality of multicarrier symbols comprised by the second symbol set does not belong to the first symbol set, and each of the plurality of multicarrier symbols comprised by the second symbol set is an Uplink (UL) symbol.

8. The second node according to claim 7 , wherein the second transmitter transmits a second signaling; wherein the second signaling indicates a second symbol set, the second signaling comprises one or more fields in a Medium Access Control (MAC) Control Element (CE), and the second signaling is transmitted through a PSSCH.

9. The second node according to claim 8 , comprising:

the second transmitter transmitting a first target information in a third symbol group, the first target information comprises either HARQ-ACK or HARQ-NACK, the first target information comprises a second sequence, the third symbol group comprises a Physical Sidelink Feedback Channel (PSFCH); wherein the first target information indicates whether the first radio signal is correctly decoded, a first symbol group is used for determining the third symbol group; or,

when the first bit sequence is correctly decoded, the second transmitter drops a transmission of a first target signal; when the first bit sequence is not correctly decoded, the second transmitter transmitting a first target information in a third symbol group; wherein the first target information indicates the first radio signal is not correctly decoded, the first target information comprises HARQ-NACK, the first target information comprises a second sequence, the third symbol group comprises a PSFCH.

10. The second node according to claim 9 , wherein the second symbol group comprises a first symbol sub-group and a second symbol sub-group, the first symbol sub-group comprises each multicarrier symbol in the second symbol group that belongs to the first symbol set; the second symbol sub-group comprises each multicarrier symbol in the second symbol group that does not belong to the first symbol set; the first bit sub-sequence is sequentially mapped into multicarrier symbols comprised by the first symbol sub-group in chronological order.

11. A method in a first node used for wireless communications, comprising:

receiving first information, the first information indicating a first symbol set, the first information comprises one or more fields in a Radio Resource Control (RRC) Information Element (IE), the first symbol set comprises a plurality of multicarrier symbols, the plurality of multicarrier symbols comprised by the first symbol set is used for transmitting Sidelink Control Information (SCI);

transmitting a first signaling in a first symbol group, the first signaling is SCI, the first symbol group comprises a Physical Sidelink Control Channel (PSCCH); and

transmitting a first radio signal in a second symbol group, the first radio signal is transmitted through a Physical Sidelink Shared Channel (PSSCH), the second symbol group comprises a PSSCH;

wherein the first symbol group belongs to the first symbol set; the first signaling indicates the second symbol group, the second symbol group comprising a plurality of multicarrier symbols; at least one multicarrier symbol of the plurality of multicarrier symbols comprised by the second symbol group belongs to the first symbol set and is used for transmitting SCI, and at least one multicarrier symbol of the plurality of multicarrier symbols comprised by the second symbol group does not belong to the first symbol set and is used for transmitting a Sidelink Shared Channel (SL-SCH); a first bit sequence is used for generating the first radio signal, and the first bit sequence comprises a first bit sub-sequence and a second bit sub-sequence, and an order of the first bit sub-sequence in the first bit sequence is prior to that of the second bit sub-sequence in the first bit sequence; the first bit sub-sequence is mapped onto one or more multicarrier symbols in the second symbol group belonging to the first symbol set, while the second bit sub-sequence is mapped onto one or more multicarrier symbols in the second symbol group; the first bit sequence comprises one or more fields in a piece of SCI and a Transport Block (TB).

12. The first node according to claim 11 , wherein the second symbol group belongs to a second symbol set; the second symbol set comprises the first symbol set, the second symbol set comprises a plurality of multicarrier symbols, at least one of the plurality of multicarrier symbols comprised by the second symbol set does not belong to the first symbol set, and each of the plurality of multicarrier symbols comprised by the second symbol set is an Uplink (UL) symbol.

13. The method according to claim 12 , wherein the second symbol set is obtained by the first node through Resource Selection or the first node according to claim 12 , comprising:

receiving a second signaling, wherein the second signaling indicates a second symbol set, the second signaling comprises one or more fields in a Medium Access Control (MAC) Control Element (CE), and the second signaling is transmitted through a PSSCH.

14. The method according to claim 13 , comprising:

detecting first target information in a third symbol group, the first target information comprises either HARQ-ACK or HARQ-NACK, the first target information comprises a second sequence, the third symbol group comprises a Physical Sidelink Feedback Channel (PSFCH);

wherein the first target information indicates whether the first radio signal is correctly decoded; the first symbol group is used for determining the third symbol group.

15. The method according to claim 14 , wherein the second symbol group comprises a first symbol sub-group and a second symbol sub-group, the first symbol sub-group comprises each multicarrier symbol in the second symbol group that belongs to the first symbol set; the second symbol sub-group comprises each multicarrier symbol in the second symbol group that does not belong to the first symbol set; the first bit sub-sequence is sequentially mapped into multicarrier symbols comprised by the first symbol sub-group in chronological order.

16. A method in a second node used for wireless communications, comprising:

receiving first information, the first information indicating a first symbol set, the first information comprises one or more fields in a Radio Resource Control (RRC) Information Element (IE), the first symbol set comprises a plurality of multicarrier symbols, the plurality of multicarrier symbols comprised by the first symbol set is used for transmitting Sidelink Control Information (SCI);

monitoring a first signaling in a first symbol group, the first signaling is SCI, the first symbol group comprises a Physical Sidelink Control Channel (PSCCH); and

receiving a first radio signal in a second symbol group when the first signaling is detected, the first radio signal is transmitted through a Physical Sidelink Shared Channel (PSSCH), the second symbol group comprises a PSSCH;

wherein the first symbol group belongs to the first symbol set; the first signaling indicates the second symbol group, the second symbol group comprising a plurality of multicarrier symbols; at least one multicarrier symbol of the plurality of multicarrier symbols comprised by the second symbol group belongs to the first symbol set and is used for transmitting SCI, and at least one multicarrier symbol of the plurality of multicarrier symbols comprised by the second symbol group does not belong to the first symbol set and is used for transmitting a Sidelink Shared Channel (SL-SCH); a first bit sequence is used for generating the first radio signal, and the first bit sequence comprises a first bit sub-sequence and a second bit sub-sequence, and an order of the first bit sub-sequence in the first bit sequence is prior to that of the second bit sub-sequence in the first bit sequence; the first bit sub-sequence is mapped onto one or more multicarrier symbols in the second symbol group belonging to the first symbol set, while the second bit sub-sequence is mapped onto one or more multicarrier symbols in the second symbol group; the first bit sequence comprises one or more fields in a piece of SCI and a Transport Block (TB).

17. The first node according to claim 16 , wherein the second symbol group belongs to a second symbol set; the second symbol set comprises the first symbol set, the second symbol set comprises a plurality of multicarrier symbols, at least one of the plurality of multicarrier symbols comprised by the second symbol set does not belong to the first symbol set, and each of the plurality of multicarrier symbols comprised by the second symbol set is an Uplink (UL) symbol.

18. The method according to claim 17 , transmitting a second signaling; wherein the second signaling indicates a second symbol set, the second signaling comprises one or more fields in a Medium Access Control (MAC) Control Element (CE), and the second signaling is transmitted through a PSSCH.

19. The method according to claim 16 , comprising:

transmitting a first target information in a third symbol group, the first target information comprises either HARQ-ACK or HARQ-NACK, the first target information comprises a second sequence, the third symbol group comprises a Physical Sidelink Feedback Channel (PSFCH); wherein the first target information indicates whether the first radio signal is correctly decoded, a first symbol group is used for determining the third symbol group; or,

when the first bit sequence is correctly decoded, the second transmitter drops a transmission of a first target signal; when the first bit sequence is not correctly decoded, the second transmitter transmitting a first target information in a third symbol group; wherein the first target information indicates the first radio signal is not correctly decoded, the first target information comprises HARQ-NACK, the first target information comprises a second sequence, the third symbol group comprises a PSFCH.

20. The method according to claim 16 , wherein the second symbol group comprises a first symbol sub-group and a second symbol sub-group, the first symbol sub-group comprises each multicarrier symbol in the second symbol group that belongs to the first symbol set; the second symbol sub-group comprises each multicarrier symbol in the second symbol group that does not belong to the first symbol set; the first bit sub-sequence is sequentially mapped into multicarrier symbols comprised by the first symbol sub-group in chronological order.