Accelerometer-assisted 802.11 rate adaptation on mass rapid transit system

Authors:
Yu-Jen Lai;Wei-Hao Kuo;Wan-Ting Chiu;Shao-Ting Chang;Hung-Yu Wei
Affiliations:
National Taiwan University, Taipei, Taiwan Roc;National Taiwan University, Taipei, Taiwan Roc;National Taiwan University, Taipei, Taiwan Roc;National Taiwan University, Taipei, Taiwan Roc;National Taiwan University, Taipei, Taiwan Roc
Venue:
Proceedings of the ACM SIGCOMM 2010 conference
Year:
2010

Citing 3
Cited 0

Robust rate adaptation for 802.11 wireless networks

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Accelerometer-assisted power efficient Wi-Fi networking on public transportation system

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Abstract

In-station Wi-Fi AP deployment provides opportunistic Wi-Fi access in underground Mass Rapid Transit (MRT) system. But such vehicular network faces the obstacle of limited connection time from the MS on the train to the BS at the station. Therefore, maximizing the throughput during the tens of second intervals becomes crucial to overcome such hindrance. To achieve the goal, we propose Accelerometer-Assisted Rate Adaptation (AARA) to divide the motion of the train into four phases; each adopts a specific rate adaptation mechanism. The experiments show that the average throughput of AARA outperforms that of the conventional scheme.