#TITLE_ALTERNATIVE#

• Main Author: RISMAWAN FIRDAUS (NIM : 13205118); Pembimbing : Trio Adiono, Ph.D. , Dr. Ir. Adit Kurniawan, M, AHMAD
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/14745
• Institution: Institut Teknologi Bandung

This final project presents the study and analysis of the simulation of mobile WiMAX handover using the network simulator NS-2. WiMAX standard 802.16-2004 has shortcomings for user movement during transmission. In <br /> <br /> <br /> <br /> <br /> <br /> <br /> connection with the movement of users, the need to change the main BS, i.e. handover or handoff, makes a necessity in the next WiMAX standard called 802.16e or mobile WiMAX. <br /> <br /> <br /> <br /> <br /> <br /> <br /> Simulation of mobile WiMAX handover requires mobility package and WiMAX module from NIST and WiMAX Forum. In the WiMAX module, there are MAC parameters for scanning and handover. These parameters are link-goingdown factor, scan duration, scan iteration, and interleaving interval. In this simulation, these parameters will be optimized so that the handover performance is better than the default value specified in the WiMAX module. Once the parameters are optimized, the number of SS in each BS range will be added and be analyzed its impact on handover performance of MS. In this simulation, MS moves from BS1 to BS2 with constant speed 10mps for 50 seconds. Range of each BS is the 500m and 900m distances both BS. 1.5Mbps CBR packets sent from core network to MS through router and BS. Handover performances measured in this simulation are handover delay, datarate received by MS, and packages that are lost during handover. Channel model used is tworayground channel model. Handover algorithm used is the hard handover in association level 0. Simulation results show improved handover performance after the value of <br /> <br /> <br /> <br /> <br /> <br /> <br /> the MAC parameters for scanning and handover procedures is optimized. Datarate received by MS increased 11,25%, HO delay that occurs for 1 / 64 times the default value of the WiMAX module and packet loss reduced 10,106%. By changing the number of MS in each range BS cause decreased handover performance. Datarate received by MS decreases, packet loss and handover delay increases linearly.