Apparatus and method for allocating resources for logical channels in wireless communication system
A method and apparatus of allocating a resource for a plurality of logical channels is provided. A transmitter acquires a plurality of available resources for a plurality of component carriers, and allocates the plurality of available resources to the plurality of logical channels based on priority of each of the plurality of logical channels.
1. A method of allocating resources for a plurality of logical channels in a wireless communication system, each of the logical channels having a corresponding priority, performed by a user equipment, the method comprising:
receiving a plurality of uplink grants from a base station, the plurality of uplink grants corresponding to a plurality of Medium Access Control Protocol Data Units (MAC PDUs), each of plurality of MAC PDUs being transmitted in a corresponding one of a plurality of transport blocks in one Transmission Time Interval (TTI) via a plurality of uplink component carriers;
determining a total resource by summing available resources of the plurality of uplink grants corresponding to the size of the plurality of MAC PDUs that will be transmitted within the one TTI via the plurality of uplink component carriers;
allocating a first amount of data associated with each of the plurality of logical channels to the total resource in order of priority of the plurality of logical channels, wherein the first amount of data for each of the plurality of logical channels is based on a prioritized bit rate (PBR) for each of the plurality of logical channels; and
allocating remaining resources for a second amount of data associated with each of the plurality of logical channels to each of the plurality of logical channels in order of priority of the plurality of logical channels, wherein the second amount of data associated with each of the plurality of logical channels is in addition to the first amount of data.
2. The method of claim 1 , wherein equal resources among the remaining resources are allocated to two logical channels respectively when the two logical channels are configured with equal priority.
3. The method of claim 1 , wherein the first amount of data associated with each of the plurality of logical channels is a guaranteed amount of data to be allocated for each of the plurality of logical channels.
4. The method of claim 1 , wherein each component carrier is defined by a corresponding center frequency.
5. The method of claim 1 , wherein the available resources are acquired from the plurality of uplink grants received from the base station.
6. A wireless apparatus comprising:
a transceiver; and
a processor operatively coupled to the transceiver and for allocating a resource for a plurality of logical channels, each of the logical channels having a corresponding priority,
wherein the processor is configured to:
receive a plurality of uplink grants from a base station, the plurality of uplink grants corresponding to a plurality of Medium Access Control Protocol Data Units (MAC PDUs), each of the plurality of MAC PDUs being transmitted in a corresponding one of a plurality of transport blocks in one Transmission Time Interval (TTI) via a plurality of uplink component carriers;
determine a total resource by summing available resources of the plurality of uplink grants corresponding to the size of the plurality of MAC PDUs that will be transmitted within the one TTI via the plurality of uplink component carriers;
allocate a first amount of data associated with each of the plurality of logical channels to the total resource in order of priority of the plurality of logical channels, wherein the first amount of data for each of the plurality of logical channels is based on a prioritized bit rate (PBR) for each of the plurality of logical channels; and
allocate remaining resources for a second amount of data associated with each of the plurality of logical channels to each of the plurality of logical channels in order of priority of the plurality of logical channels, wherein the second amount of data associated with each of the plurality of logical channels is in addition to the first amount of data.
7. The wireless apparatus of claim 6 , wherein equal resources among the remaining resources are allocated to two logical channels respectively when the two logical channels are configured with equal priority.
8. The wireless apparatus of claim 6 , wherein the first amount of data associated with each of the plurality of logical channels is a guaranteed amount of data to be allocated for each of the plurality of logical channels.
9. The wireless apparatus of claim 6 , wherein each component carrier is defined by a corresponding center frequency.
10. The wireless apparatus of claim 6 , wherein the available resources are acquired from the plurality of uplink grants received from the base station.