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A two-phase broadcast scheme for underwater acoustic networks

机译：水下声网络的两阶段广播方案

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摘要

Reliable broadcast is a critical service for Underwater Acoustic Networks (UANs). In this paper, we propose a Two-phase Broadcast Scheme (TBS) for UANs. TBS includes two phases: Fast Spreading phase and Data Recovery phase. It does not require topology or neighbor information. In the Fast Spreading phase, which is a best effort phase, opportunistic overhearing and network coding are combined to accumulate encoded packets. A probability based forwarder selection scheme is employed to alleviate the broadcast storm problem. A rebroadcast scheduling algorithm is also proposed to reduce collisions. The Data Recovery phase is to guarantee reliability if a node fails to complete data decoding in the Fast Spreading phase. Through delayed request sending, the Data Recovery phase at a node will not interfere with the Fast Spreading phase at other nodes. Through simulations, we demonstrate the advantages of TBS in terms of efficiency and reliability.
机译：可靠的广播是水下声网（UAN）的一项关键服务。在本文中，我们提出了针对UAN的两阶段广播方案（TBS）。 TBS包括两个阶段：快速扩展阶段和数据恢复阶段。它不需要拓扑或邻居信息。在尽力而为阶段的快速扩展阶段，机会监听和网络编码相结合以积累编码的数据包。采用基于概率的转发器选择方案来减轻广播风暴问题。还提出了一种重播调度算法，以减少冲突。数据恢复阶段是为了确保节点在快速扩展阶段无法完成数据解码时的可靠性。通过延迟的请求发送，一个节点上的数据恢复阶段将不会干扰其他节点上的快速扩展阶段。通过仿真，我们证明了TBS在效率和可靠性方面的优势。

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