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| Research & Implementation on GA Mechanism of Link Layer in WSNs |
| Sun Pei-gang①④ Wang Lin② Wang Hong-ye③ Zhao Hai① Zhang Xi-yuan① |
| ①(School of Information Science & Engineering, Northeastern University, Shenyang 110004, China) ②(Patent Information Centre, Liaoning Intellectual Property Office, Shenyang 110013, China) ③(Department of Engineering Physics Tsinghua University, Beijing 100084, China) ④(Department of Fundamental Courses, Shenyang Artillery Academy, Shenyang 110162, China) |
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Abstract Firstly, it is found that the physical communication link of WSNs takes on lost, asymmetric characteristics according to experimental measurements. Secondly, some typical reliable transmission mechanisms of link layer provide a certain degree of reliability, but low path efficiency and high energy costs. Therefore, an efficiency-centric link Group-based Acknowledgement Mechanism(GAM) is presented in the paper, and its performance is analyzed theoretically based on the evaluation metrics, such as path efficiency, buffer requirements, and etc. Finally, the results compared with traditional reliable transmission mechanisms based on the existing MicaZ platform show that the GAM presented in the paper particularly meets the requirements of the high reliability, low real-time applications of WSNs for its high path efficiency and constant cache occupation.
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Received: 09 February 2007
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Corresponding Authors:
Sun Pei-gang
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2008, Vol. 30 
