Wireless Networks

, Volume 19, Issue 6, pp 1155–1170 | Cite as

SAS-TDMA: a source aware scheduling algorithm for real-time communication in industrial wireless sensor networks

  • Wei ShenEmail author
  • Tingting Zhang
  • Mikael Gidlund
  • Felix Dobslaw


Scheduling algorithms play an important role for TDMA-based wireless sensor networks. Existing TDMA scheduling algorithms address a multitude of objectives. However, their adaptation to the dynamics of a realistic wireless sensor network has not been investigated in a satisfactory manner. This is a key issue considering the challenges within industrial applications for wireless sensor networks, given the time-constraints and harsh environments. In response to those challenges, we present SAS-TDMA, a source-aware scheduling algorithm. It is a cross-layer solution which adapts itself to network dynamics. It realizes a trade-off between scheduling length and its configurational overhead incurred by rapid responses to routes changes. We implemented a TDMA stack instead of the default CSMA stack and introduced a cross-layer for scheduling in TOSSIM, the TinyOS simulator. Numerical results show that SAS-TDMA improves the quality of service for the entire network. It achieves significant improvements for realistic dynamic wireless sensor networks when compared to existing scheduling algorithms with the aim to minimize latency for real-time communication.


Real-time communication TDMA scheduling algorithms Wireless sensor networks Cross-layer protocol 



We would like to thank the anonymous reviewers for their valuable advices and suggestions for improvement. We would also like to express our appreciation to Prof. Youzhi Xu for his assistance. This work has been supported by Swedish Knowledge Foundation (KK-stiftelsen) and Sensible Things That Communicate (STC) research program at Mid Sweden University.


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Copyright information

© Springer Science+Business Media New York 2012

Authors and Affiliations

  • Wei Shen
    • 1
    Email author
  • Tingting Zhang
    • 1
  • Mikael Gidlund
    • 2
  • Felix Dobslaw
    • 1
  1. 1.Department of Information Technology and Media (ITM)Mid Sweden UniversitySundsvallSweden
  2. 2.ABB Corporate ResearchVasteras Sweden

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