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An Energy Efficient Synchronization Protocol for Target Tracking in Wireless Sensor Array Networks.

Jie Shen1, Ming Yin2, Ji-An Luo3

  • 1Department of Control Science and Engineering, Zhejiang University, Hangzhou 310027, China. zjushenjie@126.com.

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Summary
This summary is machine-generated.

This study proposes an energy-efficient Sensor Array Synchronization Protocol (SASP) for wireless sensor networks. SASP ensures Quality of Service (QoS) by adapting synchronization accuracy to application needs, reducing energy consumption.

Keywords:
sensor arrayssynchronizationtarget trackingwireless sensor networks

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Area of Science:

  • Computer Science
  • Electrical Engineering
  • Network Engineering

Background:

  • Time synchronization is crucial for Quality of Service (QoS) in wireless sensor array networks.
  • Existing synchronization protocols often aim for network-wide high accuracy, which can be energy-intensive and unnecessary for all applications.
  • Application-specific synchronization is needed to balance accuracy and energy efficiency.

Purpose of the Study:

  • To propose an energy-efficient Sensor Array Synchronization Protocol (SASP) tailored for target-tracking systems in wireless sensor array networks.
  • To demonstrate how SASP can guarantee the required QoS by adapting synchronization accuracy.
  • To reduce energy consumption in wireless sensor networks.

Main Methods:

  • Exploiting the specific synchronization requirements of target-tracking systems.
  • Implementing coarse synchronization with low overhead by piggybacking time information on network maintenance packets when no target is present.
  • Achieving high inter-array and relatively higher intra-array synchronization accuracy when targets appear, rather than uniform high accuracy.

Main Results:

  • SASP effectively reduces energy consumption by employing different synchronization strategies based on target presence.
  • The protocol guarantees reliable communication and accurate data fusion for target-tracking applications.
  • Theoretical analysis and extensive evaluations confirm the protocol's effectiveness and efficiency.

Conclusions:

  • Application-specific synchronization protocols are more effective for wireless sensor array networks than generic high-accuracy approaches.
  • SASP provides a viable solution for energy-efficient time synchronization in target-tracking systems, ensuring QoS.
  • The proposed protocol balances synchronization accuracy with energy conservation, extending system lifetime.