Scan-Or-Not-to-Scan - balancing network selection accuracy and energy consumption

Abstract

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One of the factors influencing the quality of a mobile user's multimedia experience is the rate at which they can receive data. To connect to the wireless network that best meets their needs a user must first detect available networks and then select the most suitable network. However, it may not always be in the best interest of the user to actually invoke a network detection and selection strategy. Simulation results show that in certain conditions it is detrimental to the end user to switch networks, even when an apparently ‘better’ network is detected. In order to help decide when it is appropriate to invoke network detection and selection algorithms, this paper introduces the Scan-Or-Not-to-Scan (SONS) framework. SONS decides based on environmental inputs, when to invoke or not a network detection and selection algorithm. The use of the SONS framework enables the user to conserve energy by shutting down unused interfaces and maximise data throughput. Reducing the number of unnecessary handovers helps maintain the mobile user multimedia quality of experience.