Performance of Soft Handover – FBSS Compared to Hard Handover in case of High Speed in IEEE 802.16e for Multimedia Traffic

This evaluation is intended to show through simulations, the performance of FBSS Handover mechanism compared to the Hard Handover mechanism in the case of high speed mobility with mobile WIMAX for multimedia traffic. The model we propose for the evaluation is composed to a highway in rural area between two cities and responsible of vehicles traveling in both directions with relatively high speeds and variable between 80 and 130 km/h. The passengers in vehicles are equipped with IEEE 802.16e terminals and exchange with other nodes VoIP and video traffics. The highway with 75 km length is covered by four base stations (BS) whose range is 10 Km radius, and every two BSs belong to the same Access Service Network (ASN). So, we will evaluate the QoS of this mobility model, using and comparing the Handover: Fast Base Station Switching (FBSS) mechanism with hard handover mechanism during the passage of vehicles between WIMAX cells, through the measures that we will obtain by simulations. The simulations were conducted under the mobility module NIST of the NS2.29 simulator.