Increased Quality of Service through Vertical Handover in Herterogeneous Network of Umts and Wlan

This paper is a part of an ongoing research on handover performance when a user seamlessly moves between different accesses technologies is called Vertical heterogeneous handover.It discussed some of the advances that have been made to reduce vertical handover (VHO) latency for successful handover especially in heterogeneous network environments. Video streaming and voice conversation across different network environment could pose serious challenges to the quality of service during handover. This is the reason why it is imperative that mechanism for maintaining quality of service during handover is considered seriously. This investigation is aimed at adopting a VHO Mobile IP schemeto Furtherreduce handover latency in heterogeneous wireless networks composed of WLAN and GPRS or 3G networks for increased QoS for video and voice streaming. An enhanced hybrid scheme of Bi-mSCTP method with Mobile IP implementation, internetworking handover issue can be resolved and the handover Latency is reduced drastically to an accepted level for quality voice and video streaming. This approach reduces packet loss during handover and as a result the end user can get services continuously with minimal packet loss. The objective of this paper is to analyze the approach of hybrid scheme of Bi-mSCTP for real time traffics such as voice and video.

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