关键词: 长期演进系统, 资源调度, Shapley值, 博弈论, 非实时业务, 吞吐量

Abstract:

Focused on the problem of the transmission performance requirements of Real-Time（RT） service and Non-Real-Time（NRT） service in the process of downlink multi-service transmission in Long Term Evolution（LTE） communication system, a channel resource control method based on Shapley value in cooperative game theory is proposed. The method first calculates the federation boundary contribution value according to the size of the service transmission data at the MAC（Media Access Control） layer. Then the Shapley value is used to calculate the channel resources occupied by certain service. Finally, it performs RB（Resource Block） scheduling according to the allocated channel resources. Extensive simulation experiments show that the proposed method improves the transmission performance of NRT services on the basis of ensuring the delay and packet loss rate of each service. Compared with DPVT-MLWDF（Delay Priority Virtual Token-Modified Largest Weighted Delay First） algorithm, the throughput of NRT services increases by an average of 38.05% and the fairness increases by 12.51%, through varying the number of users from 5 to 50. The numerical results show that the proposed channel resource control method with differentiated services guarantees the RT service transmission performance under multi-service conditions, and improves the throughput and fairness of NRT services, which significantly outperforms the comparison algorithm.

Key words: Long Term Evolution（LTE） system, resource scheduling, Shapley value, game theory, Non-Real-Time（NRT） service, throughput