QoS oriented vertical handoff scheme for interworking of WLAN and WiMAX
نویسندگان
چکیده
A Mobile Node (MN) continuously moves in heterogeneous networks. When connections need to migrate between heterogeneous networks for performance and high-availability reasons, seamless vertical handoff is necessary first step. Everyone around the world would like to be connected seamlessly anytime anywhere through the best network. When MN changes its point of access technology handoff occurs. In this paper, a vertical handover scheme is proposed for interworking of WLAN and WiMAX to improve QoS in terms of throughput. Available bandwidth and average end to end delay will be taken in to account for making handoff decisions. Vertical handoff between WLAN and WiMAX occurs by satisfying QoS parameters. KeywordsMN, QoS, vertical handoff, WLAN, WiMAX.
منابع مشابه
QOS Oriented Vertical Handoff for Wimax/Wlan in Overlay Network
Vertical Handoff (VHO) scheme is designed based on the interworking architecture of WLAN/WIMAX which aims to provide always the best Quality of Service (Qos) for users. The performance of applications and network conditions are considered in the handoff process. The handoff procedures are normally initiated when the stations move across the border of WLANs. As a result, both the fixed station a...
متن کاملQoS Provisioning in Seamless Vertical Handover of WIMAX/WLAN Overlay Network
The integration of WiMAX and WLAN has been seen as a promising approach towards fourth generation (4G). Vertical handoff plays important role while integration of WiMAX and WLAN heterogeneous overlay systems. Vertical handoff is preformed on the basis of Quality of Service (QoS) metrics of the two heterogeneous networks. A Seamless handoff scheme is based on the tightly coupled architecture so ...
متن کاملModified Vertical Handoff Decision Algorithm for Improving Qos Metrics in Heterogeneous Networks
In 4G networks, the meshing of WiMAX and WLAN has been a tough task. Issues regarding intermeshing of WIMAX and WLAN networks during vertical handoff have to be analyzed. Two interconnected networks such as WIMAX and WLAN has been proposed. Our proposed scheme provides better connectivity between fixed and mobile stations. In our proposed framework, two heterogeneous networks have been intercon...
متن کاملPerformance and Handoff Evaluation of Heterogeneous Wireless Networks (hwns) Using Opnet Simulator
The need for coupling Heterogeneous Wireless Networks (HWNs) such as WLAN, WiMAX or UMTS, play a great role in developing towards fourth generation of wireless networks. Hence, the algorithms for these networks must be developed especially handoff algorithms to present a better performance in such heterogeneous networks. In this paper, several projects have different types of networks were impl...
متن کاملA New Vertical Handoff Scheme for UMTS - WLAN Integrated Network
Designing of heterogeneous Networks involves several interworking issues, such as seamless handoff or roaming, mobility management, security and charging problems. Among these interworking items, the issue of seamless handoff is of great importance for guaranteeing service continuity and Quality of Service. In this paper, we propose a seamless handoff scheme with minimum handoff delay and low p...
متن کامل