Survey of Vertical Handoff Models in Heterogeneous Wireless Networks
نویسندگان
چکیده
B.G. Kim and Hengky Susanto Hwang S. Lee Computer Science Dept. Electrical Eng. Dept. Univ. of Mass. Lowell KAIST {kim, hsusanto}@cs.uml.edu [email protected] Abstract A vertical handoff technique switches a mobile station among wireless networks with different technologies. Since a different network may not support the same QoS, the vertical handoff technique has to consider user QoS. A few vertical handoff models are described and compared in this paper. The focus of comparison is placed on objectives of the models and handoff parameters considered for the models. All models are based on a cost or a score function, which is formulated to reflect desirable QoS connections. All functions involve some type of weighting factors in incorporating various QoS parameters. Weighting factors are an important component in the decision model and most of studies use empirical data.
منابع مشابه
A Simple and Robust EVH Algorithm for Modern Mobile Heterogeneous Networks- A MATLAB Approach
In Wireless Mobile Cellular Networks, users usually move between heterogeneous networks. In this type of environment, handoff procedure algorithm, handoff decision and its management is very important issue. Wireless Mobile Cellular Network supports the handoff process for users between various wireless technologies such as WLAN, CDMA and modern 3G networks. Heterogeneous networks are integrate...
متن کاملSignal threshold adaptation for vertical handoff in heterogeneous wireless networks
The convergence of heterogeneous wireless access technologies has been envisioned to characterize the next generation wireless networks. In such converged systems, the seamless and efficient handoff between different access technologies (vertical handoff) is essential and remains a challenging problem. The heterogeneous co-existence of access technologies with largely different characteristics ...
متن کاملA Simple and Robust Vertical Handoff Algorithm for Heterogeneous Wireless Mobile Networks
Wireless networking is becoming an increasingly important and popular way of providing global information access to users on the move. One of the main challenges for seamless mobility is the availability of simple and robust vertical handoff algorithms, which allow a mobile node to roam among heterogeneous wireless networks. In this paper, motivated by the facts that vertical handoff procedure ...
متن کاملRequirements of Vertical Handoff Mechanism in 4G Wireless Networks
The importance of wireless communication is increasing day by day throughout the world due to cellular and broadband technologies. Everyone around the world would like to be connected seamlessly anytime anywhere through the best network. The 4G wireless system must have the capability to provide high data transfer rates, quality of services and seamless mobility. In 4G, there are a large variet...
متن کاملHandoff Architecture for Heterogeneous Wireless Environment
Future wireless networks must be able to coordinate services within a diverse network environment. Next generation wireless network is envisioned as a convergence of different wireless access technologies providing the user enhanced connection any where any time to improve the systems resource utilization. In such converged systems, co-existence of heterogeneous access technologies with largely...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2008