摘要
提出一种用于多跳无线传感器网络数据传输的数据链路层自适应混合FEC/ARQ控制策略,以提高无线传感器网络通信的可靠性。该策略基于Kalman滤波器预测当前的网络状态,根据混合FEC/ARQ能耗规律和特点,自适应地调整FEC参数n。此外,发现ARQ能耗与重传策略无关,而与网络状态有关。数学分析和仿真验证均表明,该策略能有效降低多跳无线传感器网络的能量消耗,显著地提高数据传输的可靠性。
This paper proposed an adaptive hybrid forward error correction （FEC）/automatic repeat request （ARQ） algorithm at the data link layer for wireless sensor networks, in the hope that the reliability of data transmission could be greatly improved. The algorithm, using the Kalman filter to predict packet loss rate, adjusts the FEC parameter n. In addition,we determined that the energy consumption of ARQ depends on the wireless network condition. However, it is independent on the retransmission strategy. Both the mathematical analyses and simulation result demonstrate that the proposed mechanism can significantly improve quality of communication, and the energy consumption is reduced as well.
出处
《计算机科学》
CSCD
北大核心
2010年第8期114-119,138,共7页
Computer Science
基金
国家自然科学基金(60673185)
江苏省"六大人才高峰"项目(09-D)
常熟理工学院教师科研启动基金(KY2009024)
常熟理工学院青年教师科研启动基金(QZ0911)资助
