Method and device for guarantee high QoS service via multiple resource pools for NR V2X

1. A method at a user equipment (UE) remote unit, the method comprising:

receiving resource pool usage restriction(s) from a base station unit,

receiving criteria for the UE to combine multiple resource pools as one virtual resource pool for resource selection,

determining whether parameter(s) associated with a service to be transmitted fulfills the resource pool usage restriction(s),

selecting a single resource pool corresponding to the resource pool usage restriction if the parameter(s) associated with the service fulfills the resource pool usage restriction, and

transmitting data for the service on the single selected resource pool.

2. The method of claim 1 , wherein,

the resource pool usage restriction(s) includes a list of values or a threshold for the values, and

the method further comprises:

in response to the parameter(s) associated with the service being in the list of values or being larger or being lower than the threshold, the single resource pool corresponding to the resource pool usage restriction is selected for the service.

3. The method of claim 2 , wherein,

the values include indexes for quality of service (QOS) profile including at least any of PC5-5 QoS identification (PQI), QOS flow identification (QFI).

4. The method of claim 2 , wherein,

the values include logical channel information including at least any of logical channel identification, logical channel priority.

5. The method of claim 2 , wherein,

the values include multiple QOS parameters including at least any of priority level and packet delay budget (PDB).

6. The method of claim 1 , wherein,

the resource pool usage restriction(s) are configured differently for different channel busy ratio (CBR) range,

the method further comprises:

measuring CBR, and

selecting the single resource pool based on the resource pool usage restriction corresponding to the measured CBR result.

7. The method of claim 1 , wherein,

the resource pool usage restriction(s) includes criteria for the UE to combine multiple resource pools as one virtual resource pool for resource selection, and

the method further comprises:

determining whether the parameter(s) associated with the service fulfills the criteria, and

performing resource selection in the virtual resource pool if the parameter(s) associated with the service fulfills the criteria.

8. The method of claim 7 , wherein,

the criteria are configured based on CBR, and

the method further comprises:

measuring the CBR, and

determining whether to combine multiple resource pools as one virtual resource pool for resource selection based on the measured CBR result.

9. The method of claim 1 , wherein,

the resource pool usage restriction(s) includes a list of specific services, and

the method further comprises:

in response to the UE receiving data of a service belonging to the list of specific services, the UE avoids transmitting data during a reception period.

10. The method of claim 1 , wherein,

the determining step is performed when a new PC5 QoS flow arrives, when a PC5 QoS flow is mapped to a sidelink radio bearer (SLRB), or when the UE is creating a sidelink (SL) grant.

11. A base station unit, the base station unit further comprising:

a memory; and

at least one processor coupled with the memory and configured to cause the base station to:

configure multiple resource pools for a user equipment (UE),

configure resource pool usage restriction(s) for the UE to select a single resource pool among the multiple resource pools to transmit data of a service, and

configure criteria for the UE to combine multiple resource pools as one virtual resource pool for resource selection.

12. The base station of claim 11 , wherein,

the resource pool usage restriction(s) are configured based on indexes for quality of service (QOS) profile including at least any of PC5-5 QoS identification (PQI), QoS flow identification (QFI).

13. The base station of claim 11 , wherein,

the resource pool usage restriction(s) are configured based on logical channel information including at least any of logical channel identification, logical channel priority.

14. The base station of claim 11 , wherein,

the resource pool usage restriction(s) are configured based on multiple QoS parameters including at least any of priority level and packet delay budget (PDB).

15. The base station of claim 11 , wherein,

the resource pool usage restriction(s) are configured differently for different channel busy ratio (CBR) range.

16. The base station of claim 11 , wherein,

the criteria are configured based on CBR.

17. The base station of claim 11 , wherein,

the resource pool usage restriction(s) includes a list of specific services to indicate the UE to avoid transmitting data during receiving data of a service belonging to the list of specific services.

18. A user equipment (UE) comprising:

a memory; and

at least one processor coupled to the memory and configured to:

receive resource pool usage restriction(s) from a base station unit;

receive criteria for the UE to combine multiple resource pools as one virtual resource pool for resource selection;

determine whether parameter(s) associated with a service to be transmitted fulfills the resource pool usage restriction(s);

select a single resource pool corresponding to the resource pool usage restriction if the parameter(s) associated with the service fulfills the resource pool usage restriction; and

transmit data for the service on the selected single resource pool.

19. The UE of claim 18 , wherein,

the resource pool usage restriction(s) includes a list of values or a threshold for the values, and

the at least one processor is further configured to:

if the parameter(s) associated with the service is in the list of values or larger or lower than the threshold, select the single resource pool corresponding to the single resource pool usage restriction for the service.