Method and device for wireless communication concerning non-unicast service

1. A first node for wireless communications, comprising:

a first receiver, receiving a first signaling, the first signaling being used to indicate a first identity (ID) set of a first service, the first service being a non-unicast service, and the first ID set comprising a plurality of IDs; determining a target ID; and applying the target ID to receive a target data set;

wherein the first service comprises K data sets, the target data set is one of the K data sets, K being a positive integer greater than 1; the first ID set comprises K IDs, and the target ID is one of the K IDs in the first ID set; the K data sets of the first service are respectively identified by the K IDs in the first ID set; any ID in the first ID set is one of a search space ID, a group common Radio Network Temporary Identity (RNTI), a logical channel ID and a radio bearer ID; and a location of the first node is used to determine the target ID; the first node is a User Equipment (UE);

wherein the location of the first node being used to determine the target ID includes the following meaning: the location of the first node comprises at least one coordinate value in a specific geographic coordinate system, and an ID in the first ID set comprises at least partial bits of the coordinate value of the first node; and the target ID is determined through the at least partial bits.

2. The first node according to claim 1 , wherein the first signaling indicates a first area set, the first area set comprises K areas, and the K areas in the first area set are respectively associated with the K IDs in the first ID set; the first area set and a location of the first node are used together to determine the target ID.

3. The first node according to claim 2 , wherein each ID in the first ID set is a group common RNTI; the first signaling indicates a second ID set, and the second ID set comprises K IDs; the K IDs in the second ID set respectively correspond to the K IDs in the first ID set; any ID in the second ID set is one of a logical channel ID and a radio bearer ID; the K data sets of the first service are transmitted at the same time by respectively applying the K IDs in the first ID set and the K IDs in the second ID set.

4. The first node according to claim 1 , wherein the first signaling indicates K flows of the first service, the K flows of the first service respectively correspond to the K data sets, and the K flows of the first service are mapped onto a same radio bearer.

5. The first node according to claim 2 , wherein the first signaling indicates K flows of the first service, the K flows of the first service respectively correspond to the K data sets, and the K flows of the first service are mapped onto a same radio bearer.

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

the first receiver, receiving first information, and the first information being used to indicate K1 search space(s); each ID in the first ID set is a group common RNTI; each of the K IDs in the first ID set is associated with one of the K1 search space(s), wherein K1 is a positive integer not greater than K.

7. The first node according to claim 1 , wherein the first signaling indicates a service ID of the first service, and the service ID of the first service is one of a Temporary Mobile Group Identity (TMGI) or a source IP address; the first signaling indicates a first session of the first service; and the K data sets of the first service belong to the first session.

8. The first node according to claim 1 , wherein the first signaling is transmitted by broadcast.

9. The first node according to claim 1 , wherein the first signaling is received from a node different from a transmitter of the K data sets.

10. The first node according to claim 9 , wherein the first signaling is received from a Master Cell Group (MCG) of the first node; and a transmitter of the K data sets is a Secondary Cell Group (SCG) of the first node.

11. The first node according to claim 9 , wherein the first signaling is received from a source cell of the first node; and a transmitter of the K data sets is a target cell of the first node.

12. The first node according to claim 9 , wherein the first signaling is received from a serving cell of the first node; and a transmitter of the K data sets is a relay of the first node.

13. The first node according to claim 1 , wherein the K data sets are respectively transmitted through K radio bearers, and IDs of the K radio bearers are respectively the K IDs in the first ID set; and the K radio bearers comprise a non-unicast bearer.

14. The first node according to claim 2 , wherein the first signaling comprises IDs of the K areas in the first area set.

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

the first receiver, receives a configuration message; the configuration message indicates a first Radio Network Temporary Identity (RNTI); the first RNTI is a Cell-Radio Network Temporary Identity (C-RNTI); the first RNTI is used to scramble a first physical channel transmitting the first service; the first RNTI is used to scramble a Physical Downlink Control Channel (PDCCH) channel scheduling the first physical channel; the first physical channel is a Physical Downlink Shared Channel (PDSCH) channel, and the first physical channel is used to bear the target data set; and the first physical channel is only used to bear the target data set in the K data sets.

16. The first node according to claim 1 , wherein the first signaling comprises a Non-Access Stratum (NAS) signaling.

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

the first receiver, before the behavior of determining that the target ID is executed, applying a second target ID to receive a second target set; in response to determining the target ID, resetting or releasing an RLC entity used to receive the second target data set; the second target data set belonging to the first service; the second target ID belonging to the first ID set; and the second target ID being different from the target ID.

18. A second node for wireless communications, comprising:

a second transmitter, transmitting a first signaling, the first signaling being used to indicate a first ID set of a first service, the first service being a non-unicast service, and the first ID set comprising a plurality of IDs;

wherein the first service comprises K data sets, a target data set is one of the K data sets, K being a positive integer greater than 1; the first ID set comprises K IDs, and the target ID is one of the K IDs in the first ID set; the K data sets of the first service are respectively identified by the K IDs in the first ID set; any ID in the first ID set is one of a search space ID, a group common RNTI, a logical channel ID and a radio bearer ID; and a location of the receiver of the first signaling is used to determine the target ID; the second node is a Base Station (BS);

wherein the location of the first node being used to determine the target ID includes the following meaning: the location of the first node comprises at least one coordinate value in a specific geographic coordinate system, and an ID in the first ID set comprises at least partial bits of the coordinate value of the first node; and the target ID is determined through the at least partial bits.

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

receiving a first signaling, the first signaling being used to indicate a first ID set of a first service, the first service being a non-unicast service, and the first ID set comprising a plurality of IDs; determining a target ID; and applying the target ID to receive a target data set;

wherein the first service comprises K data sets, the target data set is one of the K data sets, K being a positive integer greater than 1; the first ID set comprises K IDs, and the target ID is one of the K IDs in the first ID set; the K data sets of the first service are respectively identified by the K IDs in the first ID set; any ID in the first ID set is one of a search space ID, a group common RNTI, a logical channel ID and a radio bearer ID; and a location of the first node is used to determine the target ID; the first node is a User Equipment (UE);

wherein the location of the first node being used to determine the target ID includes the following meaning: the location of the first node comprises at least one coordinate value in a specific geographic coordinate system, and an ID in the first ID set comprises at least partial bits of the coordinate value of the first node; and the target ID is determined through the at least partial bits.