Performance of FMIPv6-based cross-layer handover for supporting mobile VoIP in WiMAX networks

This paper presents validation and evaluation of mobile VoIP support over WiMAX networks using the FMIPv6-based cross layer handover scheme. A software module has been implemented for the FMIPv6-based handoff scheme. The handoff delay components are formulated. To evaluate its support of mobile VoIP, we carefully assess the handoff delay, the total delay, and the R factor which is a representation of voice user satisfactory degree. Simulation results show that the cross-layering handoff scheme, as compared with the non-cross-layer scheme, successfully decreases layer-3 handoff delay by almost 50%, and is therefore thriving to support mobile VoIP services. We believe this is the first performance evaluation work for the FMIPv6-based cross-layer scheme, and hence an important work for the WiMAX research community.