Abstract
Carrier Aggregation (CA) is introduced by 3GPP to support much wider transmission bandwidth and higher data rate by aggregating multiple component carriers (CC). In the LTE-Advanced (LTE-A) systems with CA, the CC selection method is of great significance to the system efficiency and fairness because user equipment (UEs) may have different capabilities of aggregating carriers. This paper proposes a novel UE preference based dynamic CC selection (UP-DCS) algorithm to optimize system throughput, with an emphasis on dynamic load balancing among the CCs. UEs select their preferred CCs on the basis of both the load and channel conditions of different CCs. Simulation results demonstrate that the proposed algorithm can achieve a better system performance in terms of throughput, coverage and fairness compared to the existing algorithms.
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