Optimizing the Handover Procedure in IEEE 802.16e Mobile Wimax Network
Hamid, Nafiz Imtiaz Bin
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The mobile WiMAX bearing the IEEE standard 802.16e-2005 brings wireless broadband to a new dimension due to the support of nomadism. As a result, handover has obviously become a very significant factor in the performance of mobile WiMAX. But because of the presence of unnecessary ranging/scanning in Layer 2 along with the network re-entry procedure enormous handover latency occurs. This threatening handover delay is a huge obstacle for the optimum performance of mobile WiMAX. In this paper various problematic scenarios of handover procedure have been shown with the log file analyzer tool along with “SlickEdit” using data from a WiMAX trial network and from that an optimized handoff scheme is proposed associated with suitable pre-scanning algorithm, fast dedicated ranging and pre-registration process.
- February 2009