Vehicular opportunistic communication under the microscope
Proceedings of the 5th international conference on Mobile systems, applications and services
Proceedings of the second ACM workshop on Challenged networks
Study of a bus-based disruption-tolerant network: mobility modeling and impact on routing
Proceedings of the 13th annual ACM international conference on Mobile computing and networking
Cabernet: vehicular content delivery using WiFi
Proceedings of the 14th ACM international conference on Mobile computing and networking
Accelerometer-assisted 802.11 rate adaptation on mass rapid transit system
Proceedings of the ACM SIGCOMM 2010 conference
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Using mobile devices to access the network service over public transportation system provides ubiquitous network access. Accelerometer has become standard equipment in mobile handheld devices. We proposed a power saving mechanism, AAPS, which integrates accelerometer and Wi-Fi devices to facilitate opportunistic communication while conserving power. In the scenario of BS in the station and MS on the vehicle, MS would idle during the inter-station period and waste a lot of energy. AAPS enables the devices to detect the vibration caused by moving vehicle and stay in sleep mode until the vehicle approaches next station. When MS is approaching or in the stations, accelerometer will trigger the WLAN to connect to BS in the stations. We implemented AAPS and conducted practical experiments on Taipei MRT. The experimental results showed that AAPS can save MS energy consumption without degrading the throughput performance.