Improving emergency messages transmission delay in road monitoring based WSNs

The main wireless technology used for events sensing and data collection is wireless sensor devices. These sensors are mounted on vehicles or in the roadside to send data collected periodically or upon incident detection. In this latter case, ensuring low transmission delay from the detector sensor to WSNs gateway is a real challenge. Indeed, faster notification of the Traffic Management System (TMS) leads to more efficient reaction to the emergency situation. Thus, cars collision and human lives loss as well as road traffic jam will be mitigated. In this paper, we investigate the Medium Access Control (MAC) layer in WSNs to improve the real time data collection scheme. To this end, we propose an enhanced backoff selection scheme for IEEE 802.15.4 protocol to ensure fast transmission of the detected events on the road towards the TMS. The main feature of our scheme is its ability to assign a shorter waiting time for messages carrying critical information without changing the basic principle of the backoff mechanism. The obtained simulation results under various scenarios have proven the effectiveness of our scheme in terms of transmission delay reduction.

[1]  Hai-gang Gong,et al.  Traffic Adaptive MAC Protocol for Wireless Sensor Network , 2005, ICCNMC.

[2]  Pravin Varaiya,et al.  PEDAMACS: power efficient and delay aware medium access protocol for sensor networks , 2004, IEEE Transactions on Mobile Computing.

[3]  Ramachandran Ramjee,et al.  Nericell: rich monitoring of road and traffic conditions using mobile smartphones , 2008, SenSys '08.

[4]  Alexander Skabardonis,et al.  Detecting Errors and Imputing Missing Data for Single-Loop Surveillance Systems , 2003 .

[5]  Chunming Qiao,et al.  Medium access control with a dynamic duty cycle for sensor networks , 2004, 2004 IEEE Wireless Communications and Networking Conference (IEEE Cat. No.04TH8733).

[6]  Sukumar Nandi,et al.  Cross Layer Adaptation for QoS in WSN , 2011, ArXiv.

[7]  B. Cohen,et al.  Groups to Resolve Conflicts Between Groups: Diplomacy with a Therapeutic Dimension , 2002 .

[8]  Ramachandran Ramjee,et al.  Nericell: using mobile smartphones for rich monitoring of road and traffic conditions , 2008, SenSys '08.

[9]  Özlem Durmaz Incel,et al.  QoS-aware MAC protocols for wireless sensor networks: A survey , 2011, Comput. Networks.

[10]  John N. Tsitsiklis,et al.  Hardness of Low Delay Network Scheduling , 2011, IEEE Transactions on Information Theory.

[11]  Sing Yiu Cheung,et al.  Traffic Surveillance by Wireless Sensor Networks: Final Report , 2007 .

[12]  Amre El-Hoiydi,et al.  Aloha with preamble sampling for sporadic traffic in ad hoc wireless sensor networks , 2002, 2002 IEEE International Conference on Communications. Conference Proceedings. ICC 2002 (Cat. No.02CH37333).

[13]  Deborah Estrin,et al.  An energy-efficient MAC protocol for wireless sensor networks , 2002, Proceedings.Twenty-First Annual Joint Conference of the IEEE Computer and Communications Societies.

[14]  Hyunho Yang,et al.  A new MAC protocol improving transmission latency in Wireless Sensor Networks , 2008, 2008 International Conference on Telecommunications.

[15]  Hai L. Vu Collision Probability in Saturated IEEE 802.11 Networks , 2006 .

[16]  Koen Langendoen,et al.  An adaptive energy-efficient MAC protocol for wireless sensor networks , 2003, SenSys '03.

[17]  Torsten Braun,et al.  Improving Unsynchronized MAC Mechanisms in Wireless Sensor Networks , 2007 .

[18]  Yasir Saleem,et al.  Network Simulator NS-2 , 2015 .

[19]  Miguel A. Labrador,et al.  Low Energy and Low Latency in Wireless Sensor Networks , 2009, 2009 IEEE International Conference on Communications.

[20]  P. Varaiya,et al.  The quality of loop data and the health of California ’ s freeway loop detectors , 2002 .

[21]  Bhaskar Krishnamachari,et al.  Performance evaluation of the IEEE 802.15.4 MAC for low-rate low-power wireless networks , 2004, IEEE International Conference on Performance, Computing, and Communications, 2004.