| 程 群,陈为刚,巩 峰,王 伟.基于纠删码的海洋无线传感器网络丢包恢复方法[J].电子测量与仪器学报,2020,34(11):84-92 |
| 基于纠删码的海洋无线传感器网络丢包恢复方法 |
| Packet loss recovery with erasure correction codesin marine wireless sensor networks |
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| DOI： |
| 中文关键词: 无线传感器网络 丢包率 RS 码 |
| 英文关键词:wireless sensor networks packet loss rate (PLR) RS codes |
| 基金项目:海洋试点国家实验室主任基金(QNLM201712)资助项目 |
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| 摘要点击次数: 549 |
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| 中文摘要: |
| 针对无线传感器网络在恶劣海洋环境下存在的严重丢包问题,设计并实现了一种低复杂度的基于里德-所罗门(RS)码
的丢包恢复方法。 具体而言,发送节点对信息数据包进行分析,进一步利用 RS 码编码生成并插入少量的冗余数据包,可以保
证数据包的顺序发送,同时利用较少的资源编码生成了冗余校验数据包。 接收节点基于接收的信息数据包与校验数据包,通过
RS 码对丢失的数据包进行纠删恢复。 在陆地和海洋两种复杂信道中测试提出的方法,以丢包率(packet loss rate, PLR)作为 RS
码丢包恢复方法性能的度量指标。 测试结果表明,采用低复杂度的 RS 码丢包恢复方法能降低信道衰落影响的丢包率,保证了
数据在严重丢包情况下的完整性,提高系统的可靠性。 |
| 英文摘要: |
| Aiming at the serious packet loss problem in the harsh marine environment of wireless sensor networks, a low complexity
packet loss recovery with Reed-Solomon codes is designed and implemented. Specifically, the sending node analyzes the information data
packet, it further generates and inserts a small number of redundant data packets using RS codes encoding, which can ensure the
sequential transmission of the data packets, and generates redundant check data using fewer resource encodings. Based on the received
information data packet and check data packet, the receiving node corrects and restores the lost data packet through the RS codes. The
proposed method is tested on two complex transmission channels, terrestrial and marine, and the packet loss rate (PLR) is established
as a metric for the packet loss recovery with RS codes. The test results show that the low complexity packet recovery method with RS
codes can reduce the packet loss rate affected by channel fading, ensure data integrity under severe packet loss, and improve system
reliability. |
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