Abstract
With the advent of next-generation wireless network technologies, vertical handover has become indispensable to keep the mobile user always best connected (ABC) in a heterogeneous environment, especially the significant number of multimedia applications that require good quality of service (QoS) for users. To handle this issue, an improvement of modified Grey Relational Analysis (MGRA) to select the Always-Suitable-Connection (ASC) network has been proposed. Then, Fuzzy analytic hierarchy process (FAHP) method has been used to determine the weight of criteria. In order to validate our contribution, the proposed method called E-MGRA has been applied to obtain the ranking of suitable network. Finally, a simulation has been presented to demonstrate the performances of our developed approach to reduce the number of handovers compared to the classical method.
Highlights
The mobile technology revolution is growing day after day, enabling mobile users to communicate anytime and anywhere
In the interest of validating the capability of our E-modified Grey Relational Analysis (MGRA), we conducted simulation experiments based on Analytic Hierarchy Process (AHP) used in Section 3.1, and Fuzzy analytic hierarchy process (FAHP) in Section 3.2 to weight different criteria, the achieved results are compared
We examine enhanced MGRA (E-MGRA) method performance on four available networks (LTE (4G), HSPA (3G), WLAN and WiMAX), and we perform the simulation for four classes of quality of service (QoS) traffic
Summary
The mobile technology revolution is growing day after day, enabling mobile users to communicate anytime and anywhere This growth has led mobile operators to propose better bandwidth and increase the capacity of the mobile network that must serve all network customers. With the diversity of wireless networking technologies such as (3G, 4G, WLAN, WIFI, and future 5G networks) [1], vertical handover become a necessity for the mobile terminal to move between the available networks without loss of connection. This step is based on a selection of the best target network in a heterogeneous environment. MCDM is used to select a better network during the vertical handover decision phase, taking into consideration multiple decision criteria
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