Method and device for determining a type of random access procedure

1. A first node for wireless communications, comprising:

a first receiver, receiving a first signaling, a second signaling and a third signal; and

a first transmitter, generating a first data block in a first radio state; when a first condition set is satisfied, transmitting a first signal; when the first condition set is not satisfied, transmitting a second signal;

wherein the first signaling is used to determine a first threshold, the first threshold is a positive integer; the second signaling is used to determine a second threshold; a measurement performed on the third signal is used to determine a first receive quality; the first condition set comprising the first data size is not greater than the first threshold; the first condition set comprising the first receive quality is greater than the second threshold; the first data block comprises more than one bit, and the first data size is equal to a number of bits comprised in the first data block; the first signal is used for a first-type Random Access (RA) procedure, the second signal is used for a second-type RA procedure, and the first-type RA procedure is different from the second-type RA procedure; the first signal carries a first sequence, the second signal carries a second sequence, and the first sequence is different from the second sequence; the first radio state comprises an RRC state; the first threshold is used to determine selecting Small Data Transmission; the first-type RA procedure comprises a 2-Step RACH, the second-type RA procedure comprises a 2-Step RACH; or, the first-type RA procedure comprises a 4-Step RACH, the second-type RA procedure comprises a 4-Step RACH.

2. The first node according to claim 1 ,

wherein the first signal comprises a MsgA, and the MsgA comprises the first sequence and a payload; the payload comprises one of an RRCResumeRequest1 message or an RRCResumeRequest message; the payload comprises a Buffer Status Report (BSR).

3. The first node according to claim 1 , wherein the first radio state comprises an RRC_INACTIVE state; the first signaling comprises a System Information Block1 (SIB1); the second signaling comprises an SIB1; the second signaling is the same as the first signaling.

4. The first node according to claim 1 , comprising:

the first receiver, in response to the second signal being transmitted, receiving a fourth signal; or, in response to the first signal being transmitted, receiving a fifth signal;

the first transmitter, in response to the fifth signal being received, transmitting a sixth signal; and

the first receiver, in response to the sixth signal being transmitted, receiving a seventh signal;

wherein the fourth signal is used to perform the second-type RA procedure, and the fourth signal comprises a second Random Access Response (RAR); the fifth signal, the sixth signal and the seventh signal are used to perform the first-type RA procedure, and the fifth signal comprises a first RAR; the second signal carries the first data block, or the sixth signal carries the first data block.

5. The first node according to claim 4 , wherein the sixth signal comprises an RRCResumeRequest message or an RRCResumeRequest1 message; the sixth signal comprises a BSR.

6. The first node according to claim 1 , wherein the first signaling is used to determine a third threshold, and the third threshold is a positive integer; the first data size not being less than the third threshold is used to determine a selection of a first sequence set, and the first sequence is a sequence in the first sequence set; and the third threshold is related to a size of a Common Control Channel (CCCH).

7. The first node according to claim 1 , wherein the first signaling is used to determine X candidate sizes, the first data size belongs to one of the X candidate sizes, X being a positive integer greater than 1; the X candidate sizes are associated with X candidate sequence sets, and the first sequence set is one of the X candidate sequence sets.

8. A second node for wireless communications, comprising:

a second transmitter, transmitting a first signaling, a second signaling and a third signal; and

a second receiver, receiving a first signal or a second signal;

wherein when a first condition set is satisfied, the first signal is transmitted by a receiver of the first signaling; when the first condition set is not satisfied, the second signal is transmitted by a receiver of the first signaling; a first data block is generated by the receiver of the first signaling in a first radio state; the first signaling is used to determine a first threshold, the first threshold is a positive integer; the second signaling is used to determine a second threshold; a measurement performed on the third signal is used to determine a first receive quality; the first condition set comprising the first data size is not greater than the first threshold; the first condition set comprising the first receive quality is greater than the second threshold; the first data block comprises more than one bit, and the first data size is equal to a number of bits comprised in the first data block; the first signal is used for a first-type RA procedure, the second signal is used for a second-type RA procedure, and the first-type RA procedure is different from the second-type RA procedure; the first signal carries a first sequence, the second signal carries a second sequence, and the first sequence is different from the second sequence; the first radio state comprises an RRC state; the first threshold is used to determine selecting Small Data Transmission; the first-type RA procedure comprises a 2-Step RACH, the second-type RA procedure comprises a 2-Step RACH; or, the first-type RA procedure comprises a 4-Step RACH, the second-type RA procedure comprises a 4-Step RACH.

9. The second node according to claim 8 , wherein the first signal comprises a MsgA, and the MsgA comprises the first sequence and a payload; the payload comprises one of an RRCResumeRequest1 message or an RRCResumeRequest message; the payload comprises a BSR.

10. The second node according to claim 8 , wherein the first radio state comprises an RRC_INACTIVE state; the first signaling comprises a System Information Block1 (SIB1); the second signaling comprises an SIB1.

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

the second transmitter, in response to the second signal being received, transmitting a fourth signal; or, in response to the first signal being received, transmitting a fifth signal;

the second receiver, in response to the fifth signal being transmitted, receiving a sixth signal; and

the second transmitter, in response to the sixth signal being received, transmitting a seventh signal;

wherein the fourth signal is used to perform the second-type RA procedure, and the fourth signal comprises a second RAR; the fifth signal, the sixth signal and the seventh signal are used to perform the first-type RA procedure, and the fifth signal comprises a first RAR; the second signal carries the first data block, or the sixth signal carries the first data block.

12. The second node according to claim 8 , wherein the first signaling is used to determine a third threshold, and the third threshold is a positive integer; the first data size not being less than the third threshold is used to determine a selection of a first sequence set, and the first sequence is a sequence in the first sequence set; and the third threshold is related to a size of a CCCH.

13. The second node according to claim 8 , wherein the first signaling is used to determine X candidate sizes, the first data size belongs to one of the X candidate sizes, X being a positive integer greater than 1; the X candidate sizes are associated with X candidate sequence sets, and the first sequence set is one of the X candidate sequence sets.

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

receiving a first signaling, a second signaling and a third signal; and

generating a first data block in a first radio state; when a first condition set is satisfied, transmitting a first signal; when the first condition set is not satisfied, transmitting a second signal;

wherein the first signaling is used to determine a first threshold, the first threshold is a positive integer; the second signaling is used to determine a second threshold; a measurement performed on the third signal is used to determine a first receive quality; the first condition set comprising the first data size is not greater than the first threshold; the first condition set comprising the first receive quality is greater than the second threshold; the first data block comprises more than one bit, and the first data size is equal to a number of bits comprised in the first data block; the first signal is used for a first-type RA procedure, the second signal is used for a second-type RA procedure, and the first-type RA procedure is different from the second-type RA procedure; the first signal carries a first sequence, the second signal carries a second sequence, and the first sequence is different from the second sequence; the first radio state comprises an RRC state; the first threshold is used to determine selecting Small Data Transmission; the first-type RA procedure comprises a 2-Step RACH, the second-type RA procedure comprises a 2-Step RACH; or, the first-type RA procedure comprises a 4-Step RACH, the second-type RA procedure comprises a 4-Step RACH.

15. The method in a first node for wireless communications according to claim 14 , wherein the first signal comprises a MsgA, and the MsgA comprises the first sequence and a payload; the payload comprises one of an RRCResumeRequest1 message or an RRCResumeRequest message; the payload comprises a BSR.

16. The method in a first node for wireless communications according to claim 14 , wherein the first radio state comprises an RRC_INACTIVE state; the first signaling comprises a System Information Block1 (SIB1); the second signaling comprises an SIB1.

17. The method in a first node for wireless communications according to claim 14 , comprising:

in response to the second signal being transmitted, receiving a fourth signal; or, in response to the first signal being transmitted, receiving a fifth signal;

in response to the fifth signal being received, transmitting a sixth signal; and

in response to the sixth signal being transmitted, receiving a seventh signal;

wherein the fourth signal is used to perform the second-type RA procedure, and the fourth signal comprises a second RAR; the fifth signal, the sixth signal and the seventh signal are used to perform the first-type RA procedure, and the fifth signal comprises a first RAR; the second signal carries the first data block, or the sixth signal carries the first data block.

18. The method in a first node for wireless communications according to claim 17 , wherein the sixth signal comprises an RRCResumeRequest message or an RRCResumeRequest1 message; the sixth signal comprises a BSR.

19. The method in a first node for wireless communications according to claim 14 , wherein the first signaling is used to determine a third threshold, and the third threshold is a positive integer; the first data size not being less than the third threshold is used to determine a selection of a first sequence set, and the first sequence is a sequence in the first sequence set; and the third threshold is related to a size of a CCCH.

20. The method in a first node for wireless communications according to claim 14 , wherein the first signaling is used to determine X candidate sizes, the first data size belongs to one of the X candidate sizes, X being a positive integer greater than 1; the X candidate sizes are associated with X candidate sequence sets, and the first sequence set is one of the X candidate sequence sets.