Accelerometer-Assisted 802.11 Rate Adaptation on Mass Rapid Transit System

作者：Lai Yu Jen^*; Kuo Wei Hao; Chiu Wan Ting; Chang Shao Ting; Wei Hung Yu

来源：Computer Communication Review, 2010, 40(4): 421-422.

DOI：10.1145/1851275.1851241

• Experimentation
• Design
• Performance

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 out performs that of the conventional scheme.

• 出版日期2010-10