User-centric offloading to WLAN in WLAN/3G vehicular networks

Seungseob Lee, Sukyoung Lee

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

In recent years, there has been a growing demand in 3G data services, leading to deteriorating 3G service quality. Noting that Wireless Local Area Networks (WLANs) as well as 3G cellular networks are widely available today, WLANs could be effectively utilized to relieve the overload in the 3G networks. On the other hand, use of IEEE 802.11 WLAN Access Points (APs) has proliferated tremendously, resulting in a communication device inside a mobile vehicle to access the Internet. However, using Internet through APs in moving vehicles is challenging since WLAN APs have a short range and are typically not deployed to cover all roads. Several studies have investigated the performance of using intermittently available WLAN connectivity from moving vehicles for data transfers and predictive offloading in WLAN/3G networks. However, these works have not addressed mobility pattern from the viewpoint that drivers' mobility is generally known to have a daily routine. Therefore, in this paper, we consider the user's historical mobility to decide to offload data to WLAN instead of switching to 3G network. The user's application usage pattern is also considered into predicting available WLANs. To evaluate the performance of our offloading algorithm, we analyze the prediction error and conduct simulations. The simulation results show that the proposed algorithm achieves shorter transmission time than the existing schemes that do not consider user's mobility pattern by delivering more data to the WLANs.

Original languageEnglish
Pages (from-to)1925-1940
Number of pages16
JournalWireless Personal Communications
Volume70
Issue number4
DOIs
Publication statusPublished - 2013 Jun 1

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Wireless local area networks (WLAN)
Internet
Data transfer
Communication

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Electrical and Electronic Engineering

Cite this

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User-centric offloading to WLAN in WLAN/3G vehicular networks. / Lee, Seungseob; Lee, Sukyoung.

In: Wireless Personal Communications, Vol. 70, No. 4, 01.06.2013, p. 1925-1940.

Research output: Contribution to journalArticle

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