Handover Performance in the Mobile WiMAX Netrworks

Mobile terminals allow users to access service while on the move. This unique feature has driven the rapid growth in the mobile network industry, changing it from a new technology into a massive industry in less than two decades. In this thesis, an in-depth study of the handover effects of mobile WiMAX networks is carried out. The mobile WiMAX technology is first presented as literature study and then the technologies of handovers for previous generations are introduced in detail. Further, the hard handover of the mobile WiMAX is simulated by Network Simulator-2 (NS-2). In addition, the "ping-pang" effect of handover was investigated and the call blocking and dropping probabilities are implemented using MATLAB. The goal is to find out which parameters have the significant impact on the handover performance. The results showed that the threshold and hysteresis margin of the handover should be selected by considering the tradeoff between the "ping-pang" effect and the extra interference causing to neighboring cells due to the poor quality link. The handover latency of mobile WiMAX is below 50 ms with the traveling speed of mobile station up to 20 m/s.

Grantor dc:publisher

Digital Commons @ University of South Florida

Year dc:date

2009

Author dc:creator

• Yu, Yongxue

• Hysteresis
• Handover Threshold
• Handover Latency
• Mobility Management
• Power Management
• American Studies
• Arts and Humanities

Statement dc:rights

• default

Repository record dc:identifier

https://digitalcommons.usf.edu/etd/99

OAI identifier oai:identifier

oai:digitalcommons.usf.edu:etd-1098