Abstract
This paper explores direct phone-to-phone communication (via WiFi interface) among vehicles to support participatory sensing applications. Sensing data usually contains location, speed, and fuel consumption of the car, and has a long time delay between collected and transferred to the server. Direct communication among phones aboard is important in reducing data transfer delay time and sharing participatory sensing information in an inexpensive manner. We design a practical and optimized communication mechanism for direct phone-to-phone data transfer among phones aboard that strategically enables phone-to-phone and/or phone-to-WiFiAP communications by optimally toggling the phones between the normal client and the hotspot modes. We take advantage of the WiFi hotspot functionality on smartphones, and hence require neither involvement of participants nor changes to existing wireless infrastructure and protocols. An analytical model is established to optimize toggling between client and hotspot modes for optimal system efficiency. We fully implement this system on off-the-shelf Google Galaxy Nexus and Nexus S phones. Through a 35-vehicle two-month deployment study, as well as simulation experiments using the real-world T-drive 9,211-taxicab dataset, we show that our solution significantly reduces data transfer delay time and maintains over 80 percent system efficiency under varying system parameters.
| Original language | English (US) |
|---|---|
| Article number | 7337442 |
| Pages (from-to) | 2550-2563 |
| Number of pages | 14 |
| Journal | IEEE Transactions on Mobile Computing |
| Volume | 15 |
| Issue number | 10 |
| DOIs | |
| State | Published - Oct 1 2016 |
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Keywords
- Parameter optimization
- Phone-to-phone communication
- WiFi hotspot
- vehicular networking
ASJC Scopus subject areas
- Software
- Computer Networks and Communications
- Electrical and Electronic Engineering
Cite this
Participatory Sensing Meets Opportunistic Sharing : Automatic Phone-to-Phone Communication in Vehicles. / Sun, Xiaoshan; Hu, Shaohan; Su, Lu; Abdelzaher, Tarek F.; Hui, Pan; Zheng, Wei; Liu, Hengchang; Stankovic, John A.
In: IEEE Transactions on Mobile Computing, Vol. 15, No. 10, 7337442, 01.10.2016, p. 2550-2563.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Participatory Sensing Meets Opportunistic Sharing
T2 - Automatic Phone-to-Phone Communication in Vehicles
AU - Sun, Xiaoshan
AU - Hu, Shaohan
AU - Su, Lu
AU - Abdelzaher, Tarek F.
AU - Hui, Pan
AU - Zheng, Wei
AU - Liu, Hengchang
AU - Stankovic, John A.
PY - 2016/10/1
Y1 - 2016/10/1
N2 - This paper explores direct phone-to-phone communication (via WiFi interface) among vehicles to support participatory sensing applications. Sensing data usually contains location, speed, and fuel consumption of the car, and has a long time delay between collected and transferred to the server. Direct communication among phones aboard is important in reducing data transfer delay time and sharing participatory sensing information in an inexpensive manner. We design a practical and optimized communication mechanism for direct phone-to-phone data transfer among phones aboard that strategically enables phone-to-phone and/or phone-to-WiFiAP communications by optimally toggling the phones between the normal client and the hotspot modes. We take advantage of the WiFi hotspot functionality on smartphones, and hence require neither involvement of participants nor changes to existing wireless infrastructure and protocols. An analytical model is established to optimize toggling between client and hotspot modes for optimal system efficiency. We fully implement this system on off-the-shelf Google Galaxy Nexus and Nexus S phones. Through a 35-vehicle two-month deployment study, as well as simulation experiments using the real-world T-drive 9,211-taxicab dataset, we show that our solution significantly reduces data transfer delay time and maintains over 80 percent system efficiency under varying system parameters.
AB - This paper explores direct phone-to-phone communication (via WiFi interface) among vehicles to support participatory sensing applications. Sensing data usually contains location, speed, and fuel consumption of the car, and has a long time delay between collected and transferred to the server. Direct communication among phones aboard is important in reducing data transfer delay time and sharing participatory sensing information in an inexpensive manner. We design a practical and optimized communication mechanism for direct phone-to-phone data transfer among phones aboard that strategically enables phone-to-phone and/or phone-to-WiFiAP communications by optimally toggling the phones between the normal client and the hotspot modes. We take advantage of the WiFi hotspot functionality on smartphones, and hence require neither involvement of participants nor changes to existing wireless infrastructure and protocols. An analytical model is established to optimize toggling between client and hotspot modes for optimal system efficiency. We fully implement this system on off-the-shelf Google Galaxy Nexus and Nexus S phones. Through a 35-vehicle two-month deployment study, as well as simulation experiments using the real-world T-drive 9,211-taxicab dataset, we show that our solution significantly reduces data transfer delay time and maintains over 80 percent system efficiency under varying system parameters.
KW - Parameter optimization
KW - Phone-to-phone communication
KW - WiFi hotspot
KW - vehicular networking
UR - http://www.scopus.com/inward/record.url?scp=84985961717&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84985961717&partnerID=8YFLogxK
U2 - 10.1109/TMC.2015.2503752
DO - 10.1109/TMC.2015.2503752
M3 - Article
AN - SCOPUS:84985961717
VL - 15
SP - 2550
EP - 2563
JO - IEEE Transactions on Mobile Computing
JF - IEEE Transactions on Mobile Computing
SN - 1536-1233
IS - 10
M1 - 7337442
ER -