Title :
Handover Algorithm in WiMAX System
Author :
Xiao, Liyuan ; Yang, Jiawei ; Hui, Leifang ; Zhang, Wen
Author_Institution :
State Key Lab. of Integrated Service Networks, Xidian Univ., Xi´´an, China
Abstract :
Two macro diversity handover algorithms (MDHO and MDHO-H) are proposed for the macro diversity handover of WiMAX system. MDHO algorithm is the improvement of Z algorithm. It selects the best m BSs with strongest signal strength as the diversity sets. Then the hysteresis margin is introduced and MDHO-H algorithm is proposed based on MDHO algorithm. Three algorithms are simulated and compared under a same scenario. Simulation results show that the handover numbers of MDHO algorithm and MDHO-H algorithm have decreased by 24% and 53% respectively compared to that of Z algorithm.
Keywords :
WiMax; mobility management (mobile radio); MDHO-H algorithm; WiMax system; Z algorithm; macrodiversity handover algorithms; Diversity reception; Equations; Hysteresis; Mathematical model; Mobile computing; Switches; WiMAX; Macro diversity handover algorithm; WiMAX; handover number;
Conference_Titel :
Communications and Mobile Computing (CMC), 2011 Third International Conference on
Conference_Location :
Qingdao
Print_ISBN :
978-1-61284-312-4
DOI :
10.1109/CMC.2011.78
