论文标题

基于单跳听的ARQ,用于多跳网络中的低延迟通信

One-Hop Listening Based ARQs for Low-Latency Communication in Multi-Hop Networks

论文作者

Goel, Jaya, Harshan, J.

论文摘要

受车辆网络中新兴应用程序的启发,我们解决了在多跳线无线网络中实现高可靠性和低延迟通信的问题。我们提出了一个新的基于自动重复重复重试的家庭(ARQ)合作策略,其中使用每个跳跃的数据包重新传输来获得高端到端的可靠性,而通过对整个网络跨网络的数据包重新收录的总数施加上限来满足低延迟限制。我们策略的标志是单跳的听力能力,其中节点仅通过计算解码错误而仅通过计算失败尝试的数量来利用其前一个节点的未使用的ARQ。我们进一步扩展了单跳听多跳的聆听的想法,其中一组连续的节点构成簇以利用前面节点的未使用的ARQ(超出其最近的邻居),以进一步提高可靠性。因此,我们的策略提供了高可靠性功能,而在原始延迟构成中没有妥协。对于提出的策略,我们解决了在节点上分布ARQ时的非线性优化问题,以最大程度地减少数据包下降概率(PDP),但在网络中占据了ARQ的总数。通过对PDP和延迟概况的广泛理论结果,我们表明所提出的策略的表现优于该领域最著名的策略。

Inspired by emerging applications in vehicular networks, we address the problem of achieving high-reliability and low-latency communication in multi-hop wireless networks. We propose a new family of Automatic-Repeat-Requests (ARQs) based cooperative strategies wherein high end-to-end reliability is obtained using packet re-transmissions at each hop while the low-latency constraint is met by imposing an upper bound on the total number of packet retransmissions across the network. A hallmark of our strategies is the one-hop listening capability wherein nodes utilize the unused ARQs of their preceding node just by counting the number of failed attempts due to decoding errors. We further extend the idea of one-hop listening to multi-hop listening, wherein a set of consecutive nodes form clusters to utilize the unused ARQs of the preceding nodes, beyond its nearest neighbour, to further improve reliability. Thus, our strategies provide the high-reliability feature with no compromise in the original latency-constraint. For the proposed strategies, we solve non-linear optimization problems on distributing the ARQs across the nodes so as to minimize packet drop probability (PDP) subject to a total number of ARQs in the network. Through extensive theoretical results on PDP and delay profiles, we show that the proposed strategies outperform the best-known strategies in this space.

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