METHOD AND DEVICE FOR WIRELESS COMMUNICATION
The present application discloses a method and device for wireless communications, comprising receiving first Sidelink Control Information (SCI), a second SCI and a first Transport Block (TB) on sidelink; herein, the first SCI schedules a first Physical Sidelink Shared Channel (PSSCH), and both the second SCI and the first TB are transmitted in the first PSSCH; candidates of a format of the second SCI comprise SCI format 2-A, SCI format 2-B, SCI format 2-C and a first format subset; the first format subset comprises at least a first SCI format; the present application determines a format of a second SCI by transmitting the first bit group, which can better support new functions and technologies on sidelink.
1 . A first node for wireless communications, comprising:
a first receiver, receiving first Sidelink Control Information (SCI), a second SCI and a first Transport Block (TB) on sidelink;
wherein the first SCI schedules a first Physical Sidelink Shared Channel (PSSCH), and both the second SCI and the first TB are transmitted in the first PSSCH; candidates of a format of the second SCI comprise SCI format 2-A, SCI format 2-B, SCI format 2-C and a first format subset; the first format subset comprises at least a first SCI format; whether a first bit group is used to indicate whether the format of the second SCI is related to a value of a 2 nd -stage SCI format field in the first SCI; when the value of the 2 nd -stage SCI format field in the first SCI is one of 00, 01, and 10, the first bit group is not used to indicate the format of the second SCI, and when the value of the 2 nd -stage SCI format field in the first SCI is 11, the first bit group is used to indicate the format of the second SCI; the first bit group comprises at least one bit.
2 . The first node according to claim 1 , wherein
the first bit group belongs to the first SCI or the first bit group belongs to the second SCI.
3 . The first node according to claim 1 , wherein
the first bit group belongs to the first SCI;
wherein the meaning of the phrase that the first bit group is used to indicate the format of the second SCI is: the first bit group indicates the format of the second SCI from the first format subset; the first bit group belongs to at least one of a modulation-coding-related field or reserved field of the first SCI.
4 . The first node according to claim 2 , wherein
the first bit group belongs to the first SCI;
wherein the meaning of the phrase that the first bit group is used to indicate the format of the second SCI is: the first bit group indicates the format of the second SCI from the first format subset; the first bit group belongs to at least one of a modulation-coding-related field or reserved field of the first SCI.
5 . The first node according to claim 1 , wherein
the first bit group belongs to the second SCI;
wherein the first format subset comprises at least two SCI formats, and numbers of bits comprised in all SCI formats in the first format subset are the same.
6 . The first node according to claim 2 , wherein
the first bit group belongs to the second SCI;
wherein the first format subset comprises at least two SCI formats, and numbers of bits comprised in all SCI formats in the first format subset are the same.
7 . The first node according to claim 1 , wherein
the first bit group belongs to the second SCI;
wherein a size of the first SCI format comprised in the first format subset is the same as a size of one of the SCI format 2-A, the SCI format 2-B or the SCI format 2-C; the SCI format 2-A and the SCI format 2-B do not comprise a padding bit field.
8 . The first node according to claim 2 , wherein
the first bit group belongs to the second SCI;
wherein a size of the first SCI format comprised in the first format subset is the same as a size of one of the SCI format 2-A, the SCI format 2-B or the SCI format 2-C; the SCI format 2-A and the SCI format 2-B do not comprise a padding bit field.
9 . The first node according to claim 5 , wherein
the first bit group belongs to the second SCI;
wherein a size of the first SCI format comprised in the first format subset is the same as a size of one of the SCI format 2-A, the SCI format 2-B or the SCI format 2-C; the SCI format 2-A and the SCI format 2-B do not comprise a padding bit field.
10 . The first node according to claim 6 , wherein
the first bit group belongs to the second SCI;
wherein a size of the first SCI format comprised in the first format subset is the same as a size of one of the SCI format 2-A, the SCI format 2-B or the SCI format 2-C; the SCI format 2-A and the SCI format 2-B do not comprise a padding bit field.
11 . The first node according to claim 1 , comprising:
a first receiver, receiving a first RRC message; the first RRC message is used to indicate a size of the first SCI format comprised in the first format subset.
12 . The first node according to claim 1 , wherein
at least partial bits in the first bit group belong to the first SCI; at least partial bits in the first bit group belong to the second SCI; the first bit group comprises at least two bits.
13 . The first node according to claim 12 , wherein
a bit belonging to the first SCI in the first bit group is used to indicate: a bit belonging to the second SCI in the first bit group is used to indicate the format of the second SCI.
14 . The first node according to claim 12 , wherein
a bit belonging to the first SCI in the first bit group is used to indicate a position of a bit belonging to the second SCI in the first bit group in the second SCI; a bit belonging to the second SCI in the first bit group is used to indicate the format of the second SCI.
15 . The first node according to claim 1 , wherein
the first bit group depends on a reinterpretation of either the first SCI or the second SCI;
wherein the meaning of the phrase that the first bit group depends on a reinterpretation of either the first SCI or the second SCI comprises: the first bit group belongs to the first SCI, and the first bit group depends on a reinterpretation of at least one field of the first SCI; or the first bit group belongs to the second SCI, and the first bit group depends on a reinterpretation of at least one field of the second SCI.
16 . The first node according to claim 1 , wherein
the format of the second SCI belongs to the first format subset, and the second SCI is used for positioning.
17 . The first node according to claim 1 , wherein
the format of the second SCI belongs to the first format subset, and the second SCI is used for carrier aggregation.
18 . The first node according to claim 1 , wherein
the format of the second SCI belongs to the first format subset, and the second SCI is used for multi-antenna.
19 . A second node for wireless communications, comprising:
a second transmitter, transmitting a first SCI, a second SCI and a first TB on sidelink;
wherein the first SCI schedules a first Physical Sidelink Shared Channel (PSSCH), and both the second SCI and the first TB are transmitted in the first PSSCH; candidates of a format of the second SCI comprise SCI format 2-A, SCI format 2-B, SCI format 2-C and a first format subset; the first format subset comprises at least a first SCI format; whether a first bit group is used to indicate whether the format of the second SCI is related to a value of a 2 nd -stage SCI format field in the first SCI; when the value of the 2 nd -stage SCI format field in the first SCI is one of 00, 01, and 10, the first bit group is not used to indicate the format of the second SCI, and when the value of the 2 nd -stage SCI format field in the first SCI is 11, the first bit group is used to indicate the format of the second SCI; the first bit group comprises at least one bit.
20 . A method in a first node for wireless communications, comprising:
receiving a first SCI, a second SCI and a first TB on sidelink;
wherein the first SCI schedules a first Physical Sidelink Shared Channel (PSSCH), and both the second SCI and the first TB are transmitted in the first PSSCH; candidates of a format of the second SCI comprise SCI format 2-A, SCI format 2-B, SCI format 2-C and a first format subset; the first format subset comprises at least a first SCI format; whether a first bit group is used to indicate whether the format of the second SCI is related to a value of a 2 nd -stage SCI format field in the first SCI; when the value of the 2 nd -stage SCI format field in the first SCI is one of 00, 01, and 10, the first bit group is not used to indicate the format of the second SCI, and when the value of the 2 nd -stage SCI format field in the first SCI is 11, the first bit group is used to indicate the format of the second SCI; the first bit group comprises at least one bit.