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An Integrated Energy Efficient Data Retrieval Protocol for Underwater Delay Tolerant Networks

机译：水下延迟耐受网络的集成节能数据检索协议

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摘要

In large-scale underwater sensor networks where sparsely deployed clusters of underwater nodes need to relay information back to the base station, end-to-end links may either not be available or feasible. In such cases, a retrieval device needs to travel into the underwater field to collect data from the nodes, resulting in a certain amount of delay until the data is available at the base station. In this paper, we propose an energy efficient protocol for such delay tolerant data retrieval applications. This protocol can be optimized to reduce retrieval time and energy consumption and is highly customizable to suit various network sizes and application requirements. It adopts efficient erasure codes (LT codes) and forward error correction codes (LDPC codes) to overcome the challenges in an underwater acoustic environment, such as large and variable propagation delay, low and narrow bandwidth and limited energy resources. This protocol also provides a modularized framework in which further improvements can be easily implemented.
机译：在大规模的水下传感器网络中，水下节点的稀疏部署群集需要将信息中继回基站，端到端链接可以不可用或可行。在这种情况下，检索装置需要行进到水下场以收集来自节点的数据，从而导致一定量的延迟，直到数据在基站上可用。在本文中，我们提出了一种用于这种延迟耐受数据检索应用的能量有效协议。可以优化该协议以减少检索时间和能量消耗，并且可以适应各种网络大小和应用要求。它采用高效的擦除代码（LT代码）和前向纠错码（LDPC码）来克服水下声学环境中的挑战，例如大型和可变的传播延迟，低和窄的带宽和有限的能量资源。该协议还提供了模块化框架，其中可以容易地实现进一步的改进。

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