关键词: LTE, 联合资源调度, 下行控制信道(PDCCH), 下行业务信道(PDSCH)

Abstract: The authors study the joint channel allocation strategy in consideration of the interaction between control channel allocation and service channel allocation. Both of the joint channel allocation algorithms proposed are based on Minimal Aggregation-Maximal Carrier to Interference algorithm, which aims to achieve maximal network throughput. Users’ service requirement and the constraint between control channel and service channel are both considered in the proposed algorithms. Two strategies designed according to service requirement and control channel efficiency separately are proposed. Compared with the traditional strategies, both of the joint channel allocation strategies suggested are theoretically proved and experimentally verified with performance better than minimal aggregation level-maximal carrier to interference ratio (Min AL-Max C/I) in network capacity and coverage. It is concluded that joint channel allocation based on service requirement achieves best cumulative user throughput performance, while joint channel allocation based on control channel efficiency provides best network throughput with limited control channel constraint.

Key words: LTE, joint resource allocation, PDCCH (physical downlink control channel), PDSCH (physical downlink service channel)