Wi-Fi Offloading Method Based on Prefetching

2014 Fiscal Year Final Research Report

• Project/Area Number: 25730059
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Information network
• Research Institution: Advanced Telecommunications Research Institute International (2014); Nara Institute of Science and Technology (2013)
• Principal Investigator: TAMAI Morihiko 株式会社国際電気通信基礎技術研究所, その他部局等, 研究員 (90523077)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: Wi-Fiオフローディング / プリフェッチ / スマートフォン

Outline of Final Research Achievements

The explosive growth of mobile data traffic causes immense pressure on the cellular networks (3G/4G), resulting in the deterioration in the quality of wireless communication. To cope with the problem, mobile network operators deploy Wi-Fi access points (Wi-Fi APs) to offload the traffic from 3G/4G to Wi-Fi. However, since the coverage of a Wi-Fi AP is relatively small, Wi-Fi connectivity is far from ubiquitous. To increase opportunities of offloading, we propose a prefetch-based Wi-Fi offloading method. In this method, while a mobile terminal is connected to a Wi-Fi AP, the application data that will be requested over 3G/4G after the user leaves the AP are predicted, and these contents are prefetched in advance over Wi-Fi. Because the available battery amount is one of the most critical resources of mobile terminals, our method tries to increase the offloaded amount within the constraint on the battery amount consumed by prefetching.

Free Research Field

モバイルコンピューティング