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Performance Evaluation of DTSN in Wireless Sensor Networks

机译：DTSN在无线传感器网络中的性能评估

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The guaranteed delivery of critical data is an essential requirement in most Wireless Sensor Network (WSN) applications. The paucity of energy, communication, processing and storage resources in each WSN node causes the TCP transport model (widely used in broadband networks) to be inefficient in WSNs, a reason why new WSN-specific reliable transport protocols have been proposed in the past few years. This paper presents one of these protocols, the Distributed Transport for Sensor Networks (DTSN). DTSN is able to efficiently support unicast communications in WSNs due to its capabilities to tightly control the amount of signaling and retransmission overhead. The basic loss recovery algorithm is based on Selective Repeat ARQ, employing both positive and negative acknowledgements. Caching at intermediate nodes is used to avoid the inefficiency typical of the strictly end-to-end transport reliability commonly assumed in broadband networks. DTSN is currently implemented in TinyOS. Preliminary simulation results using this code show that DTSN is quite efficient providing block oriented reliability, while the caching mechanism employed in DTSN decreases packet delay for more than one hop.
机译：在大多数无线传感器网络（WSN）应用中，保证关键数据的传输是必不可少的要求。每个WSN节点中能源，通讯，处理和存储资源的匮乏，导致TCP传输模型（广泛用于宽带网络）在WSN中效率低下，这是过去几年中提出新的特定于WSN的可靠传输协议的原因年份。本文介绍了这些协议之一，即传感器网络的分布式传输（DTSN）。 DTSN能够严格控制信令和重传开销的数量，因此能够有效支持WSN中的单播通信。基本的损失恢复算法基于选择性重复ARQ，同时采用肯定和否定确认。在中间节点进行缓存是为了避免通常在宽带网络中假设的严格的端到端传输可靠性所带来的低效率。 DTSN当前在TinyOS中实现。使用此代码的初步仿真结果表明，DTSN在提供面向块的可靠性方面非常有效，而DTSN中使用的缓存机制可减少多于一个跃点的数据包延迟。

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