Method and device for wireless communication

1. A first node for wireless communication, comprising:

a first receiver, to determine a target identifier; and

a second receiver, to receive a first signal, the first signal carrying first information;

wherein the first information comprises information of an access stratum, the first information is used for indicating a first identifier set, and the first identifier set comprises a positive integer number of identifiers; the first identifier set is associated to second information; a second signal carries the second information, and the second information comprises information of a non-access stratum; whether the first identifier set comprises the target identifier is used for determining whether the second information is valid; any one identifier comprised in the first identifier set may be used for mobility management, information carried by the first signal may be received by more than one node, information carried by the second signal may be received by more than one node, and the first identifier set is related to the access stratum; the first identifier set comprises a Mobile Country Code; the first identifier set comprises a Public Land Mobile Network (PLMN) identifier, and the target identifier comprises an identifier in a PLMN identifier group selected by the first node; the first information includes a time range, and the first identifier set includes a time value within the time range included in the first information.

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

the first receiver, to receive a target signal, wherein the target signal is used for determining a first measurement result, and the first measurement result is used for determining the target identifier.

3. The first node according to claim 2 , comprising:

the first measurement result includes an elevation angle; the first identifier set includes an angle between a maximum elevation angle and a minimum elevation angle; the target identifier includes the measured elevation angle in the first measurement result; and when the first identifier set includes the target identifier, the second information is determined to be valid.

4. The first node according to claim 2 , comprising:

the first measurement result includes an eccentricity of the second node; the eccentricity included in the measurement result is used for determining a shape of an orbit; in combination with the current time, the first measurement result is used for determining distances from a perigee and an apogee to a geocentre and a distance difference; the distances and the distance difference are used for calculating a size of a coverage of the second node on the earth surface; the size of the coverage is used for estimating whether the serving cell of the first node can cover a valid area of the second information.

5. The first node according to claim 2 , comprising:

the first signal is transmitted on an NTN related channel; the second signal is transmitted on an NTN related channel; the target signal includes a TN cell signal.

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

the target identifier includes a relative position of the first node to a point A.

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

the first identifier set comprises a search space which is used for detecting a PDCCH indicating the second signal.

8. The first node according to claim 7 , comprising:

when the second information is determined to be invalid, the first node does not detect a PDCCH scrambled with an SI-RNTI in a search space of the PDCCH indicating the second signal.

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

when the second information is determined to be invalid, the first node does not detect a PDCCH scrambled with a P-RNTI in a search space of the PDCCH indicating the second signal.

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

the second receiver receives a second identifier set, the first identifier set is a subset of the second identifier set, the second identifier set may be used for associating to information other than the second information, and the second identifier set is used for determining the first identifier set; the first identifier set is related to a transmission sequence of an identifier in the second identifier set.

11. The first node according to claim 10 , comprising:

the transmission sequence of the identifier in the second identifier set includes a sequence from MSB to LSB formed by a bit string in a packaged PDU corresponding to the identifier in the second identifier set.

12. The first node according to claim 10 , wherein

the first identifier set comprises an SSB index; the second identifier set includes an SSB indicated by an ssb-PositionsInBurst transmitted in an SIB 1 .

13. The first node according to claim 1 , wherein

the first identifier set comprises a tracking area code, and the target identifier comprises a track area code registered by the first node.

14. The first node according to claim 1 , wherein

an RRC message carried by the second signal is not encrypted and has no integrity protection.

15. The first node according to claim 14 , wherein

at least one Resource Element (RE) in the time-frequency resources carrying the first signal does not belong to the time-frequency resources carrying the second signal.

16. A second node for wireless communication, comprising:

a second transmitter, to transmit a first signal and a second signal, the first signal carrying first information, and the second signal carrying second information;

wherein the first information comprises information of an access stratum, the first information is used for indicating a first identifier set, and the first identifier set comprises a positive integer number of identifiers; the first identifier set is associated to the second information; the second information comprises information of an non-access stratum; whether the first identifier set comprises a target identifier is used for determining whether the second information is valid; any one identifier comprised in the first identifier set may be used for mobility management, information carried by the first signal may be received by more than one node, information carried by the second signal may be received by more than one node, and the first identifier set is related to the access stratum; the first identifier set comprises a Mobile Country Code; the first identifier set comprises a Public Land Mobile Network (PLMN) identifier, and the target identifier comprises an identifier in a PLMN identifier group selected by the first node; the first information includes a time range, and the first identifier set includes a time value within the time range included in the first information.

17. The second node according to claim 16 , wherein

the second node is at different spatial positions at different time, and covers different areas.

18. The second node according to claim 17 , wherein

the second node includes an NTN satellite, and the target signal includes an ephemeris of the second node.

19. A method in a first node for wireless communication, comprising:

determining a target identifier; and

receiving a first signal, the first signal carrying first information;

wherein the first information comprises information of an access stratum, the first information is used for indicating a first identifier set, and the first identifier set comprises a positive integer number of identifiers; the first identifier set is associated to second information; a second signal carries the second information, and the second information comprises information of a non-access stratum; whether the first identifier set comprises the target identifier is used for determining whether the second information is valid; any one identifier comprised in the first identifier set may be used for mobility management, information carried by the first signal may be received by more than one node, information carried by the second signal may be received by more than one node, and the first identifier set is related to the access stratum; the first identifier set comprises a Mobile Country Code; the first identifier set comprises a Public Land Mobile Network (PLMN) identifier, and the target identifier comprises an identifier in a PLMN identifier group selected by the first node; the first information includes a time range, and the first identifier set includes a time value within the time range included in the first information.

20. A method in a second node for wireless communication, comprising:

transmitting a first signal and a second signal, the first signal carrying first information, and the second signal carrying second information;

wherein the first information comprises information of an access stratum, the first information is used for indicating a first identifier set, and the first identifier set comprises a positive integer number of identifiers; the first identifier set is associated to the second information; the second information comprises information of an non-access stratum; whether the first identifier set comprises a target identifier is used for determining whether the second information is valid; any one identifier comprised in the first identifier set may be used for mobility management, information carried by the first signal may be received by more than one node, information carried by the second signal may be received by more than one node, and the first identifier set is related to the access stratum; the first identifier set comprises a Mobile Country Code; the first identifier set comprises a Public Land Mobile Network (PLMN) identifier, and the target identifier comprises an identifier in a PLMN identifier group selected by the first node; the first information includes a time range, and the first identifier set includes a time value within the time range included in the first information.