Method and apparatus for allocation of resources in a wireless communication system
A method for allocating wireless resources for a number of user equipment in a wireless communication system is applied in an apparatus. The apparatus collects the traffic demands of all the user equipment and then selects a beam based on the traffic demands of all the user equipment in every time slot to make better utilization of resource blocks.
1. A method for resource allocation applied in a base station for a plurality of user equipment in a wireless communication system during a time slot period, the method comprising:
sorting in descending order a plurality of beams, according to a sum of traffic demands of a plurality of primary user equipment of each of the plurality of beams, wherein the plurality of primary user equipment are user equipment, which are served in optimal beams, of the plurality of user equipment, wherein the traffic demands of the plurality of primary user equipment is obtained by monitoring packets queued in a buffer;
selecting in sequence a set of beams from the plurality of beams sorted into descending order;
allocating resource blocks to the plurality of primary user equipment of each of the selected set of beams in descending order based on a traffic demand of each of the plurality of primary user equipment;
calculating a signal-to-interference-plus-noise (SINR) for each of a plurality of secondary user equipment, wherein the plurality of secondary user equipment are user equipment, which are not served in optimal beams, of the plurality of user equipment; and
allocating remaining resource blocks to the plurality of secondary user equipment in descending order based on the calculated SINRs.
2. The method of claim 1 , wherein prior to allocating the resource blocks, the method further comprises:
determining whether to re-select the set of beams according to a level of interference in the set of beams.
3. The method of claim 2 , the method further comprises:
determining whether to re-select the set of beams when the level of interference in the set of beams exceeds a predefined level.
4. The method of claim 2 , wherein the level of interference in the set of beams is obtained by strongest interfering beams of the plurality of user equipment.
5. An apparatus for resource allocation for a plurality of user equipment in a wireless communication system during a time slot period, the apparatus comprising:
a processing unit; and
a computer readable storage medium for storing at least one computer program, wherein the at least one computer program comprises instructions which are executed by the processing unit, and performs a method comprising:
sorting in descending order a plurality of beams, according to a sum of traffic demands of a plurality of primary user equipment of each of the plurality of beams, wherein the plurality of primary user equipment are user equipment, which are served in optimal beams, of the plurality of user equipment, wherein the traffic demands of the plurality of primary user equipment is obtained by monitoring packets queued in a buffer;
selecting in sequence a set of beams from the plurality of beams sorted into descending order;
allocating resource blocks to the plurality of primary user equipment of each of the selected set of beams in descending order based on a traffic demand of each of the plurality of primary user equipment;
calculating a signal-to-interference-plus-noise (SINK) for each of a plurality of secondary user equipment, wherein the plurality of secondary user equipment are user equipment, which are not served in optimal beams, of the plurality of user equipment; and
allocating remaining resource blocks to the plurality of secondary user equipment in descending order based on the calculated SINRs.
6. The apparatus of claim 5 , wherein prior to the allocating resource blocks, the method further comprises:
determining whether to re-select the set of beams according to a level of interference in the set of beams.
7. The apparatus of claim 6 , wherein the method further comprises:
determining whether to re-select the set of beams when the level of interference in the set of beams exceeds a predefined level.
8. The apparatus of claim 6 , wherein the level of interference in the set of beams is obtained by strongest interfering beams of the plurality of user equipment.