Joint Scheduling Algorithms for LTE-A CoMP System

This paper investigates a novel type of Joint Scheduling algorithm for LTE-A CoMP system in a time and frequency selective fading channel. Two algorithms named SEB (Spectrum Efficiency Based) and JSB (Joint Score-Based) are proposed. Based on the spectrum efficiency optimization and the spectrum efficiency & users’ fairness co-optimization, we formulate the optimization problems and give out the greedy-algorithm-based solutions. They try to select the best user and the best transmission method (CoMP or Non-CoMP) dynamically on every different time and frequency band to get better performance. It is proven by the simulation that 1) the best spectrum efficient can be achieved when SEB is used, especially when the channel quality is poor; 2) when taking the users’ fairness into account, JSB outperforms other scheduling algorithms.