Seamless Vertical Handover in WiFi and WiMAX Networks using RSS and Motion Detection: An Investigation
نویسنده
چکیده
In this paper, we propose a decision making algorithm for seamless vertical handover between WiFi hotspots and an overlay WiMAX network. The inputs to the algorithm are the WiFi received signal strength (RSS) and estimated end-to-end TCP handover latency. Simulation of the algorithm using Matlab ® reveals that the distance from the WiFi reception boundary at which handover must be initiated if it is to be seamless increases with both end-to-end TCP/IP handover latency and the speed of the mobile terminal towards or away from the WiFi access point. We conclude that RSS-based seamless handovers need to be augmented with network layer information if they are to be optimal. (
منابع مشابه
Location Aware Fast Handover Between WiMax and WiFi Networks
Next generation mobile communications will rely on integrated networks consisting of multiple wireless access technologies such as WiFi, WiMAX, GSM and UMTS. With variety of access technologies, mobile users want to take diverse advantage without any disruptions when they move from one place to another. Seamless handover in between homogeneous or heterogeneous wireless access networks will be a...
متن کاملWiFi/WiMAX Seamless Convergence with Adaptive Vertical Handover for Continuity of Internet Access
The next generation of the wireless networks will consist of several overlapping tiers. Provision of undisrupted communication to mobile users is a challenging task. Handover delay is one of the problematic issues that users are faced in the heterogeneous networks. However, in the case of both the WiMAX and the WiFi technologies which are located at the same base station (BS), the vertical hand...
متن کاملGrey Relation Analysis for Vertical Handover Decision Schemes in Heterogeneous Wireless Networks
Seamless continuity is the main goal and challenge in fourth generation Wireless networks (FGWNs), to achieve seamless connectivity “HANDOVER” technique is used, Handover mechanism are mainly used when a mobile terminal(MT) is in overlapping area for service continuity. In Heterogeneous wireless networks main challenge is continual connection among the different networks like WiFi, WiMax, WLAN,...
متن کاملPerformance Improvement of Seamless Vertical Handover in Heterogeneous Wireless Network
For the development of the wireless networks the design of seamless and efficient vertical handover is an essential issue. Next generation wireless communications will likely rely on integrated networks consisting of multiple wireless technologies. So the integration of vertical handovers with other wireless technologies, such as WLAN, WiFi, WiMAX, UMTS or 3G, has attracted research community f...
متن کاملAlgorithm for Seamless Handover between Wimax and Wlan Radio Access Technology Using Ns2
The convergence of mobile homogeneous networks to heterogeneous networks had put forth the challenge of seamless handovers between different radio access networks with maintained QoS. Efficient vertical handover decision strategy is vital for heterogeneous WiMax/WLAN networks that in return do combine advantages from both access technology in terms of data rates and coverage, offering high QoS ...
متن کامل