Method for resource allocation in wireless communication system and apparatus therefor
Disclosed are a method for allocating resources in a wireless communication system and an apparatus therefor. In particular, a method for allocating radio resources to a UE in a wireless communication system, comprising: a step of receiving, from a first base station, first semi-persistent scheduling (SPS) configuration information including semi-persistent resource allocation information of a first cluster; a step of being allocated a first SPS resource on the basis of the first SPS configuration information by receiving an SPS assignment from the first base station; and a step of, when the UE performs handover to a second cluster belonging to the same cluster group as the first cluster, being allocated a second SPS resource on the basis of the first SPS configuration information by receiving an SPS assignment from a second base station.
1. A method for a UE being allocated with radio resources in a wireless communication system, the method comprising:
receiving first semi-persistent scheduling (SPS) configuration information including semi-persistent resource allocation information of a first cluster from a first eNB;
receiving an allocation of a first SPS resource based on the first SPS configuration information by receiving SPS assignment from the first eNB; and
receiving an allocation of a second SPS resource based on the first SPS configuration information by receiving SPS assignment from a second eNB, when the UE performs handover to a second cluster belonging to an identical cluster group with a cluster group of the first cluster,
wherein the cluster comprises one or more cells, and
wherein the cluster group comprises one or more clusters in which an identical resource pool has been configured.
2. The method of claim 1 , wherein when the UE performs the cluster handover, priority is assigned to a cluster belonging to a cluster group identical with a cluster group of a cluster to which the UE belongs.
3. The method of claim 1 , wherein if a different resource region is configured within a resource pool for each cluster belonging to an identical cluster group, the first SPS resource is allocated within a resource region configured in the first cluster, and the second SPS resource is allocated within a resource region configured in the second cluster.
4. The method of claim 1 , wherein the second SPS resource corresponds to a resource at a location identical with a location of the first SPS resource in a time-frequency domain.
5. The method of claim 1 , wherein when the cluster handover is performed, a cluster having greatest received intensity of a cluster synchronization signal is selected.
6. The method of claim 5 , wherein the cluster synchronization signal is transmitted at same timing determined according to an index of the cluster in all cells belonging to the same cluster.
7. The method of claim 5 , wherein the cluster synchronization signal is transmitted in different subframes for each cell belonging to an same cluster.
8. The method of claim 1 , further comprising:
receiving second SPS configuration information including semi-persistent resource allocation information of a third cluster from a third eNB, if the UE performs handover to the third cluster belonging to a cluster group different from the first cluster; and
receiving an allocation of a third SPS resource based on the second SPS configuration information by receiving SPS assignment from the third eNB.
9. The method of claim 8 , further comprising:
requesting a release of the second SPS resource from the third eNB when the UE completes handover to the third cluster.
10. The method of claim 8 , wherein when empty transmission of a specific number or more continues from the UE on the second SPS resource, the second SPS resource is released.
11. The method of claim 8 , wherein the second SPS resource is released when non-acknowledgement (NACK) is continuously transmitted by a specific number or more from the UE receiving data through the second SPS resource using vehicle-to-vehicle (V2V) communication.
12. A UE being allocated with radio resources in a wireless communication system, comprising:
a radio frequency (RF) unit for transmitting/receiving a radio signal; and
a processor controlling the RF unit,
wherein the processor is configured to,
receive first semi-persistent scheduling (SPS) configuration information including semi-persistent resource allocation information of a first cluster from a first eNB,
receive an allocation of a first SPS resource based on the first SPS configuration information by receiving SPS assignment from the first eNB, and
receiving an allocation of a second SPS resource based on the first SPS configuration information by receiving SPS assignment from a second eNB when the UE performs handover to a second cluster belonging to an identical cluster group identical with a cluster group of the first cluster,
wherein the cluster comprises one or more cells, and
wherein the cluster group comprises one or more clusters in which an identical resource pool has been configured.