本文關(guān)鍵詞： 車(chē)載網(wǎng) 地理路由 方向貪婪轉(zhuǎn)發(fā) 鏈路質(zhì)量 期望傳輸次數(shù)　出處：《計(jì)算機(jī)工程與設(shè)計(jì)》2017年11期 　論文類(lèi)型：期刊論文

【摘要】：盡管基于貪婪轉(zhuǎn)發(fā)(greedy forwarding,GF)地理路由廣泛應(yīng)用于車(chē)載網(wǎng)(vehicular ad hoc networks,VANETs),但仍存在鏈路穩(wěn)定性不足的問(wèn)題。為此,提出基于期望傳輸次數(shù)(expected transmission count,ETX)鏈路質(zhì)量感知的方向貪婪轉(zhuǎn)發(fā)的地理路由協(xié)議(ETX-based link quality aware directional greedy forwarding geographic routing,ETX-DGF)。利用距離、節(jié)點(diǎn)移動(dòng)方向以及鏈路質(zhì)量計(jì)算每個(gè)節(jié)點(diǎn)的轉(zhuǎn)發(fā)權(quán)值,利用經(jīng)典的ETX估計(jì)鏈路質(zhì)量,將具有最小轉(zhuǎn)發(fā)權(quán)值的鄰居節(jié)點(diǎn)選為下一跳轉(zhuǎn)發(fā)節(jié)點(diǎn)。實(shí)驗(yàn)結(jié)果表明,ETX-DGF協(xié)議降低了數(shù)據(jù)包丟失率,提高了網(wǎng)絡(luò)吞吐量。
[Abstract]:Although geographic routing based on greedy forwarding hoc networks is widely used in vehicle-borne networks, there is still a problem of insufficient link stability. In this paper, a geographic routing protocol, ETX-based link quality aware directional greedy forwarding geographic routing ETX-DGFs, is proposed, which is based on the direction of perceived link quality perception of the expected transmission count. The forwarding weights of each node are calculated by using distance, node movement direction and link quality. Using the classical ETX to estimate the link quality, the neighbor node with the minimum forwarding weight is selected as the next hop forwarding node. The experimental results show that the ETX-DGF protocol reduces the packet loss rate and improves the network throughput.
【作者單位】： 江蘇食品藥品職業(yè)技術(shù)學(xué)院信息工程系;
【基金】：淮安市產(chǎn)學(xué)研協(xié)同創(chuàng)新計(jì)劃基金項(xiàng)目(HAC2014007) 江蘇省政策引導(dǎo)類(lèi)計(jì)劃基金項(xiàng)目(BY2015054-02)
【分類(lèi)號(hào)】：TN929.5;U495
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本文編號(hào)：1528890