RIM-MAC:一种适用于水下传感网接收者发起的多会话MAC协议

发布时间：2018-05-16 10:09

  本文选题：传播延迟 + 并行传输　； 参考：《通信学报》2015年S1期

【摘要】：声通信是水下传感网的主要通信方式之一,但是它具有长延迟和低带宽的特点,这是水下传感网MAC(media access control)协议研究面临的主要挑战。为提高网络吞吐量,提出了一种接收者发起的多会话MAC协议(RIM-MAC)。它利用接收者发起会话,通过一次会话的4次握手完成所有邻居数据分组的传输,有效地减少握手次数。同时利用侦听到的本地信息(邻居延迟图和邻居的传输调度)避免信道冲突并发起多个会话,这解决了长传播延迟带来的信道利用率低的问题。RIM-MAC通过增强节点间并行传输的能力,在接收者和发送者两端提高时空复用率,与经典水下MAC协议比,网络吞吐量提高了至少36%。除此之外,基于自适应数据轮询策略提出了一种网络负载公平算法(FTA),它保证了网络中竞争节点间的信道访问的公平性。仿真实验表明,在长传播延迟的场景下,RIM-MAC取得了比典型的水下传感网MAC协议更好的吞吐量性能。
[Abstract]:Acoustic communication is one of the main communication methods of underwater sensor network, but it has the characteristics of long delay and low bandwidth, which is the main challenge in the research of underwater sensor network MAC(media access control protocol. In order to improve network throughput, a receiver initiated multi-session MAC protocol (RIM-MAC) is proposed. It uses the receiver to initiate the session and completes the transmission of all neighbor data packets through four handshakes of one session, which effectively reduces the number of handshakes. At the same time, using the listening local information (neighbor delay graph and neighbor transmission scheduling) to avoid channel collision and initiate multiple sessions, This solves the problem of low channel utilization caused by long propagation delay. RIM-MAC improves the space-time multiplexing rate at both ends of receiver and sender by enhancing the ability of parallel transmission between nodes. Compared with the classical underwater MAC protocol, the network throughput is increased by at least 36. In addition, a network load fairness algorithm based on adaptive data polling strategy is proposed, which ensures the fairness of channel access between competing nodes in the network. Simulation results show that RIM-MAC achieves better throughput performance than the typical underwater sensor network (MAC) protocol in the scenario of long propagation delay.
【作者单位】： 中国科学院计算技术研究所;中国科学院大学;海军装备研究院;
【基金】：国家自然科学基金资助项目(61173132,61303245)~~
【分类号】：TP212.9;TN929.3
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本文编号：1896435