Message Transmission Scheduling for Multi-hop Wireless Sensor Network with T-Shaped Topology

Message Transmission Scheduling for Multi-hop Wireless Sensor Network with T-Shaped Topology
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T型拓扑多跳无线传感器网络消息传输调度

DOI:
10.1007/978-3-030-61108-8_12
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发表时间:
2020
期刊:
Lecture Notes in Networks and Systems
影响因子:
--
通讯作者:
Tsuru Masato
Tsuru Masato
中科院分区:
--
文献类型:
--
作者:
Nguyen Linh Vu;Shibata Masahiro;Tsuru Masato

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在多跳无线传感器网络中,每个节点在每个周期内周期性地生成分组,并沿着相邻节点之间的有损无线链路将分组转发到其中一个网关,通过该网关分组可以到达中央数据采集服务器。为了应对频繁的分组丢失,我们考虑了一种基于TDMA的冗余传输的分组调度。在我们以前的工作中,我们提出了一种在网络的两边都有两个网关的网络拓扑结构的最优调度问题,这并不总是现实的。因此,本文将研究扩展到具有三个网关的T形网络拓扑。推导了T形拓扑结构下的静态时隙分配算法,该算法最大化了在有限的周期内将所有数据包在基本冗余传输方案下成功传输到服务器的理论概率,并通过数值实验验证了该算法的有效性。这一扩展极大地提高了我们的最优调度方案的适用性。
In multihop wireless sensor networks, packets are periodically generated at each node in every cycle period time and forwarded along lossy wireless links between adjacent nodes toward one of the gateways through which the packets can reach a central data collection server. To cope with frequent packet losses, we consider a TDMA-based packet scheduling with redundant transmissions. In our previous work, we propose an optimal scheduling for the tandemly-arranged network topology with two gateways at the both edges of the network; which is not always realistic. Therefore, in this paper, we extend the research to the T-shaped network topology with three gateways. We derive a static time-slot allocation for T-shaped topology, which maximizes the theoretical probability that all packets are successfully delivered to the server with the basic redundant transmission scheme in a limited cycle period; and show its benefit through numerical results. This extension significantly increases the applicability of our optimal scheduling scheme.
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期刊: --
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