期刊名称：International Journal of Engineering and Computer Science
印刷版ISSN：2319-7242
出版年度：2014
卷号：3
期号：12
页码：9726-9731
出版社：IJECS
摘要：Reliable delivery of data is a key challenge in Wireless Sensor Networks (WSN). This paper discusses various challenges toachieve data reliability. Various data transport protocols that deliver data in both upstream and downstream directions are discussed indetail. Furthermore the existing data transport reliability protocols are analyzed based on various reliability levels. Techniques based onretransmission and redundancies are discussed. Retransmission techniques seem to be efficient but leads to overhead. Redundancytechniques like erasure code, Reed Solomon codes and route fix seems to be the best alternative in a resource constrained WSN. Finally ithas been stated that the right combination of retransmission and redundancy techniques helps to achieve high reliability. On the basis of theanalysis, few research challenges to achieve reliability are pointed out.
关键词：Reliability; Upstream; Downstream; Transport protocols; Redundancy and Retransmission
