Performance evaluation of multi-criteria vertical handover for heterogeneous wireless networks

Abstract

Always Best Connected (ABC) concept allows the best connectivity to mobile users anywhere at any time in heterogeneous network environment. To answer its requirement, Network selection techniques play a considered role in providing the best QoS in such environment. In this paper authors study the use of Multiple Attribute Decision Making (MADM) used to choose the best network from available networks. Authors compare handover decision algorithms: MEW (Multiplicative Exponent Weighting), SAW (Simple Additive Weighting) and TOPSIS (Technique for Order Preference by Similarity to Ideal Solution) in terms of end-to-end delay and packet loss using Two available networks WLAN and Wimax in NS-3. All algorithms allow different attributes (e.g., bandwidth, delay, Jitter and Bite Error rate) to be included in the simulation.

Multi-Criteria Vertical Handover Comparison between Wimax and Wifi

“…The Figures 3 and 4 describe the end to end delay and the Packet Loss respectively of each traffic class for each handover decision algorithm, also, it presents the difference of the performance between the weights given in [15] and presented with our scenario in [16] and our weights with the same scenario.…”

“…As in [16], our contribution consists of a handover decision phase; decision makers must choose the best network from available networks. The goal of this contribution is to analyze the weights given to the metrics, so that, as reported in the Algorithm block diagram shown in Figure 2, simulation provides the system with the metrics in realtime and a pairwise comparison is applied according to each QoS class: Conversational, Streaming, Interactive and Background.…”

“…Both are ideal partners for operators to deliver convenient and affordable services, they are open IEEE wireless standards built from scratch for IP-based applications. We used the same scenario as in [16]. On the user side, we consider four types of applications with different QoS requirements including Conversational, Streaming, Interactive and background.…”

M2EW Algorithm for Increasing the Degree of Precision of Vertical Handover Network Selection

“…By using algorithm, it can improve the performance by reducing unnecessary handover and "ping-pong" effect [4] The VHD algorithm based on the combination algorithm is a high reliability algorithm because it has a training algorithm system like Multiple Attribute Decision Making algorithm. It is a combined algorithm that uses various parameters simultaneously such as artificial neural network and fuzzy logic [6].…”

“…Each value of the network candidate i is derived from adding the contribution of the normalization of each rj matrix multiplied by the weight of the weight interest assigned wj from the matrix j. It will then select the selected ASAW * network based on * = arg max 1 ∈ ∑ =1 (1) where N indicates parameters and M indicates the network candidates targeted by the device [6].…”