QoS enhancement in future generation network by handoff delay minimization

Abstract

Worldwide Interoperability for Microwave Access (WiMAX) specified by IEEE 802.16 supports Wireless Metropolitan Area Network (WMAN). In the environment of WMAN the mobile client has high mobility and it moves from the coverage area of Serving Base Station (SBS) to Target Base Station (TBS). Handoff is one of the Quality of Service (QoS) parameter in the WiMAX network which supports mobility and is the main challenging research in WiMAX network. The handoff is the process in which the mobile nodes switch from one BS to another until it gets the better signal quality. In this scheme Mobile Station (MS) scans for the TBS selection until it gets the better signal quality. The main issue in the WiMAX network is the handoff latency and it occurs when the MS is unable to predict the TBS based on the quality signal. The proposed work improves the handoff latency during the transmission of signals from the Previous Base Station (PBS) to TBS by providing the fast handoff scheme using the location based mobility pattern table for WiMAX networks. The QoS parameters like packet loss ratio and delay are also considered during the handoff.