Title :
A handover scheme towards downlink traffic load balance in heterogeneous cellular networks
Author :
Fei Liu ; Mahonen, P. ; Petrova, Marina
Author_Institution :
Inst. for Networked Syst., RWTH Aachen Univ., Aachen, Germany
Abstract :
Traffic load balance is among the most crucial issues in heterogeneous cellular networks (HCNs), which can lead to much higher throughput, better user fairness and larger coverage for HCNs. In this paper, we consider the user association problem in HCNs and design a handover scheme for traffic load balancing among macro and femto cells. Three types of handover factors are delicately designed with different objectives focusing on throughput or fairness or trying to balance the both. Correspondingly, three typical resource schedulers are adopted to improve the desired performance. The performance of the proposed scheme is evaluated by simulations and reveals considerable improvement in comparison with the maximum biased-received-power association scheme, especially the data rates of the low-rate users. The impact of different base station and user distributions on the balancing results is also analyzed.
Keywords :
data communication; femtocellular radio; mobility management (mobile radio); resource allocation; scheduling; telecommunication power management; telecommunication traffic; HCN; base station; biased-received-power association scheme; downlink traffic load balance; femtocells; handover factors; handover scheme; heterogeneous cellular networks; macrocells; resource schedulers; user association problem; user distributions; Bit rate; Femtocells; Handover; Macrocell networks; Throughput; Wireless communication; Heterogeneous cellular networks; traffic load balance; user association; user fairness;
Conference_Titel :
Communications (ICC), 2014 IEEE International Conference on
Conference_Location :
Sydney, NSW
DOI :
10.1109/ICC.2014.6884092