Sung Hoon Seo , Seung Chan Lee , Joo Seok Song

The KIPS Transactions:PartB , Vol. 12, No. 6, pp. 679-684, Oct. 2005
10.3745/KIPSTB.2005.12.6.679,   PDF Download:

Abstract

There are a few representative wireless network access technologies used widely. WWAN is celluar based telecommunication networks supporting high mobility, WLAN ensures high data rate within hotspot coverage, and WDMB support both data and broadcasting services correspondingly. However, these technologies include some limitations especially on the mobility, data rate, transmission direction, and so on. In order to overcome these limitations, there are various studies have been proposed in terms of "Vertical Handoff" that offers seamless connectivity by switching active connection to the appropriate interface which installed in the mobile devices. In this paper, we propose the interface selection algorithm and network architecture to maximize the life time of entire system by minimizing the unnecessary energy consumption of another interfaces such as WLAN, WDMB that are taken in the user equipment. In addition, by using the results of analyzing multiple types of traffic and managing user buffer as a metric for vertical handoff, we show that the energy efficiency of our scheme is 75% and 34% than typical WLAN for WDMB and WLAN preferred schemes, correspondingly.

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