本文選題：無(wú)線傳感器網(wǎng)絡(luò)　切入點(diǎn)：機(jī)會(huì)路由　出處：《南京郵電大學(xué)》2017年碩士論文

【摘要】：無(wú)線傳感器網(wǎng)絡(luò)(WSN)是近年來(lái)熱門(mén)研究領(lǐng)域。而作為其關(guān)鍵技術(shù)之一,路由協(xié)議設(shè)計(jì)的好壞將影響著網(wǎng)絡(luò)的性能。對(duì)于無(wú)線傳感器網(wǎng)絡(luò)中鏈路動(dòng)態(tài)、多變、丟失的特點(diǎn),傳統(tǒng)路由協(xié)議已不能很好地應(yīng)對(duì)。而機(jī)會(huì)路由充分利用無(wú)線信道廣播的特性,保證了數(shù)據(jù)傳輸?shù)目煽啃浴Ｍ瑫r(shí)引入網(wǎng)絡(luò)編碼的機(jī)會(huì)路由協(xié)議,解決了節(jié)點(diǎn)間的協(xié)調(diào)問(wèn)題。本文針對(duì)無(wú)線傳感器網(wǎng)絡(luò)能量受限的特點(diǎn),設(shè)計(jì)了能量均衡的機(jī)會(huì)路由協(xié)議MMORE。在MMORE協(xié)議中,綜合考慮節(jié)點(diǎn)間的鏈路質(zhì)量和節(jié)點(diǎn)的剩余能量與能耗,設(shè)計(jì)了一種新的度量值“期望生存時(shí)間”度量,并以此度量為基礎(chǔ),給出了最佳候選轉(zhuǎn)發(fā)節(jié)點(diǎn)集選擇算法,優(yōu)化候選轉(zhuǎn)發(fā)節(jié)點(diǎn)集中的節(jié)點(diǎn)數(shù)量,以最小的生存時(shí)間消耗代價(jià)轉(zhuǎn)發(fā)數(shù)據(jù)分組,延長(zhǎng)網(wǎng)絡(luò)生存時(shí)間。仿真結(jié)果表明,相比于MORE協(xié)議以及MT-NCOR協(xié)議,MMORE協(xié)議改善了節(jié)點(diǎn)能耗不均的現(xiàn)象,從而延長(zhǎng)網(wǎng)絡(luò)生存時(shí)間。針對(duì)基于網(wǎng)絡(luò)編碼的機(jī)會(huì)路由協(xié)議存在數(shù)據(jù)分組冗余轉(zhuǎn)發(fā)的問(wèn)題,本文設(shè)計(jì)了一種基于編碼系數(shù)反饋確認(rèn)的機(jī)會(huì)路由協(xié)議CCFAOR。在CCFAOR協(xié)議中,利用編碼數(shù)據(jù)分組中攜帶的編碼向量,下游節(jié)點(diǎn)在轉(zhuǎn)發(fā)編碼數(shù)據(jù)分組時(shí)攜帶一個(gè)編碼反饋向量;上游節(jié)點(diǎn)通過(guò)偵聽(tīng)獲取編碼反饋向量并通過(guò)比較分析,判斷下游節(jié)點(diǎn)的接收情況而決定是否停止編碼數(shù)據(jù)分組的發(fā)送。另外,利用編碼反饋向量標(biāo)記緩存的數(shù)據(jù)分組,避免緩存的編碼數(shù)據(jù)分組多次參與隨機(jī)線性網(wǎng)絡(luò)編碼。仿真結(jié)果表明,相比于MORE協(xié)議以及CCACK協(xié)議,CCFAOR協(xié)議可以有效地減少網(wǎng)絡(luò)中冗余編碼數(shù)據(jù)分組的傳輸,同時(shí)網(wǎng)絡(luò)的吞吐量有了一定的提高。
[Abstract]:Wireless sensor network (WSN) is a hot research field in recent years. As one of the key technologies, the design of routing protocol will affect the performance of the network. For dynamic link, wireless sensor network is changeable, loss characteristics, traditional routing protocols cannot cope with the good opportunity. Make full use of the characteristics of wireless channel routing broadcast, to ensure the reliability of data transmission. At the same time, the introduction of network routing protocol encoding opportunity, solve the coordination problems between nodes. According to the characteristics of limited energy of wireless sensor network, designed the energy balance of the opportunity of MMORE. routing protocol in the MMORE protocol, the residual energy and energy consumption considering the link quality between nodes and nodes the design of a new measure "expected survival time" measure, and based on this metric, given the best candidate nodes set selection algorithm, The number of forwarding nodes to optimize the candidate set, with the minimum survival time expense of forwarding data packets, prolong the survival time of the network. The simulation results show that compared to the MORE protocol and MT-NCOR protocol, the MMORE protocol improves the uneven energy consumption of the nodes, and prolong the survival time of the network. Aiming at the problems of redundant data packet forwarding routing protocol network encoding opportunity based on this paper, based on the design of a feedback coefficient encoding confirmation of the opportunistic routing protocol CCFAOR. in CCFAOR protocol, carrying the encoding vector using the encoding data packet, the downstream nodes in forwarding encoding data packet carries a feedback vector encoding; upstream nodes to obtain feedback through a comparative analysis of vector encoding by interception. The reception of the downstream node and determine whether to stop encoding decided to send packets. In addition, the use of feedback to the encoding The amount of labeled data packet buffer, avoid encoding data packet buffer participated in random linear network encoding. The simulation results show that compared to the MORE protocol and CCACK protocol, CCFAOR protocol can effectively reduce the transmission of redundant encoding data packets in the network, and the network throughput is improved.

【學(xué)位授予單位】：南京郵電大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：TN929.5;TP212.9

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本文編號(hào)：1700315