本文選題：傳播延遲 + 并行傳輸　； 參考：《通信學(xué)報》2015年S1期

【摘要】：聲通信是水下傳感網(wǎng)的主要通信方式之一,但是它具有長延遲和低帶寬的特點(diǎn),這是水下傳感網(wǎng)MAC(media access control)協(xié)議研究面臨的主要挑戰(zhàn)。為提高網(wǎng)絡(luò)吞吐量,提出了一種接收者發(fā)起的多會話MAC協(xié)議(RIM-MAC)。它利用接收者發(fā)起會話,通過一次會話的4次握手完成所有鄰居數(shù)據(jù)分組的傳輸,有效地減少握手次數(shù)。同時利用偵聽到的本地信息(鄰居延遲圖和鄰居的傳輸調(diào)度)避免信道沖突并發(fā)起多個會話,這解決了長傳播延遲帶來的信道利用率低的問題。RIM-MAC通過增強(qiáng)節(jié)點(diǎn)間并行傳輸?shù)哪芰?在接收者和發(fā)送者兩端提高時空復(fù)用率,與經(jīng)典水下MAC協(xié)議比,網(wǎng)絡(luò)吞吐量提高了至少36%。除此之外,基于自適應(yīng)數(shù)據(jù)輪詢策略提出了一種網(wǎng)絡(luò)負(fù)載公平算法(FTA),它保證了網(wǎng)絡(luò)中競爭節(jié)點(diǎn)間的信道訪問的公平性。仿真實(shí)驗(yàn)表明,在長傳播延遲的場景下,RIM-MAC取得了比典型的水下傳感網(wǎng)MAC協(xié)議更好的吞吐量性能。
[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.
【作者單位】： 中國科學(xué)院計算技術(shù)研究所;中國科學(xué)院大學(xué);海軍裝備研究院;
【基金】：國家自然科學(xué)基金資助項(xiàng)目(61173132,61303245)~~
【分類號】：TP212.9;TN929.3
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本文編號：1896435