LTE downlink cross-layer scheduling algorithm based on QoS for value-added service
LIU Hui1,2, ZHANG Sailong1
1. Institute of Applications of Advanced Telecommunications Technology, Chongqing University of Posts and Telecommunications, Chongqing 400065, China;
2. Chongqing Information Technology Designing Company Limited, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
Aiming at the problem that how to achieve the different value-added service users' rates in the Long Term Evolution (LTE) system, an optimization Proportional Fairness (PF) algorithm was proposed. Considering channel conditions, pay level and satisfaction, this optimization PF algorithm with QoS-aware service's eigenfunction could properly schedule the paying users under the situation that the paid rates could not be achieved. So it could achieve the different paying levels of rates. Simulations were conducted in Matlab environment. In the simulations, the optimization PF algorithm performed better than traditional PF in satisfaction and effective throughput. Compared with traditional PF algorithm, the difference of average satisfaction between paying users was about 26%, and the average effective throughput increased by 17%. The simulation results indicate that, under the premise of QoS in multi-service, the optimization algorithm can achieve the different users' perceived average rates, guarantee the satisfaction among the different paying parties and raise the effective throughput of system.
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2015, Vol. 35 
