發(fā)布時(shí)間：2018-03-27 12:16

  本文選題：能量感知　切入點(diǎn)：編碼感知　出處：《安徽大學(xué)》2017年碩士論文

【摘要】：近些年來,無線傳感器網(wǎng)絡(luò)成為通信領(lǐng)域研究的一個(gè)熱點(diǎn),它是一種新型的數(shù)據(jù)監(jiān)控網(wǎng)絡(luò)。對(duì)于無線傳感器網(wǎng)絡(luò)來說,路由協(xié)議的研究有利于提高該網(wǎng)絡(luò)的路由性能。傳統(tǒng)的路由協(xié)議中,總是預(yù)先選擇一條確定的路徑來轉(zhuǎn)發(fā)數(shù)據(jù)包,這種方式雖然簡(jiǎn)單,但由于無線傳感器網(wǎng)絡(luò)鏈路具有的丟失、時(shí)變等特性,因此不太適用于無線傳感器網(wǎng)絡(luò)環(huán)境。與傳統(tǒng)的路由協(xié)議相比,機(jī)會(huì)路由利用了無線信道的廣播性質(zhì),很好地適用于無線傳感器網(wǎng)絡(luò)環(huán)境。本文對(duì)機(jī)會(huì)路由進(jìn)行研究,包括機(jī)會(huì)路由的路由度量設(shè)計(jì)、機(jī)會(huì)路由候選轉(zhuǎn)發(fā)節(jié)點(diǎn)選擇與排序算法設(shè)計(jì)以及候選轉(zhuǎn)發(fā)節(jié)點(diǎn)間協(xié)調(diào)機(jī)制等幾個(gè)方面進(jìn)行深入研究,設(shè)計(jì)出符合無線傳感器網(wǎng)絡(luò)特性的機(jī)會(huì)路由協(xié)議。主要的研究?jī)?nèi)容如下:(1)傳感器節(jié)點(diǎn)的能量是有限的,為了減少網(wǎng)絡(luò)中的能量消耗,設(shè)計(jì)出一種基于能量感知的機(jī)會(huì)路由協(xié)議。通過能耗模型來計(jì)算出相鄰節(jié)點(diǎn)間傳輸數(shù)據(jù)包所消耗的能量,繼而計(jì)算出每個(gè)節(jié)點(diǎn)到目的節(jié)點(diǎn)傳輸數(shù)據(jù)包所需要消耗的能量,然后提出了一種綜合節(jié)點(diǎn)能量消耗和剩余能量的路由度量,并根據(jù)此路由度量給出了候選轉(zhuǎn)發(fā)節(jié)點(diǎn)選擇與排序算法,最后用數(shù)據(jù)包序列號(hào)PSL方式來協(xié)調(diào)候選轉(zhuǎn)發(fā)節(jié)點(diǎn)間數(shù)據(jù)包的轉(zhuǎn)發(fā),減少數(shù)據(jù)包的重復(fù)發(fā)送。仿真結(jié)果表明,該協(xié)議能有效地減少了網(wǎng)絡(luò)中的能量消耗,均衡了網(wǎng)絡(luò)能量,延長(zhǎng)了網(wǎng)絡(luò)生存時(shí)間。(2)由于網(wǎng)絡(luò)編碼技術(shù)的發(fā)展,很多學(xué)者將網(wǎng)絡(luò)編碼引入機(jī)會(huì)路由當(dāng)中,但是大多數(shù)研究編碼的機(jī)會(huì)路由協(xié)議還是以最短路徑的ETX或編碼機(jī)會(huì)大小作為路由度量,頻繁選取距離目的節(jié)點(diǎn)近的或編碼機(jī)會(huì)大的節(jié)點(diǎn)進(jìn)行數(shù)據(jù)包的轉(zhuǎn)發(fā),會(huì)造成局部負(fù)載過重。因此,本文提出一種融合節(jié)點(diǎn)的編碼機(jī)會(huì)與節(jié)點(diǎn)區(qū)域負(fù)載的綜合路由度量,然后在此路由度量基礎(chǔ)上提出一種基于編碼感知的機(jī)會(huì)路由協(xié)議,通過主動(dòng)探測(cè)節(jié)點(diǎn)的編碼機(jī)會(huì)以尋求節(jié)點(diǎn)編碼與區(qū)域負(fù)載之間的平衡。實(shí)驗(yàn)證明,該路由協(xié)議相對(duì)于傳統(tǒng)的編碼感知的機(jī)會(huì)路由協(xié)議,它能夠更好地均衡網(wǎng)絡(luò)負(fù)載,提高網(wǎng)絡(luò)吞吐量,優(yōu)化網(wǎng)絡(luò)性能。
[Abstract]:In recent years, wireless sensor network (WSN) has become a hot topic in the field of communication, and it is a new type of data monitoring network. The research of routing protocol is helpful to improve the routing performance of the network. In the traditional routing protocols, a certain path is always selected to forward the packet in advance. This method is simple, but due to the loss of the link in the wireless sensor network. Compared with traditional routing protocols, opportunistic routing takes advantage of the broadcast nature of wireless channels. This paper studies opportunistic routing, including the routing metric design of opportunistic routing. The selection and sorting algorithm of the candidate forwarding node and the coordination mechanism between the candidate forwarding nodes are studied in detail. An opportunistic routing protocol is designed for wireless sensor networks. The main research contents are as follows: 1) the energy of sensor nodes is limited, in order to reduce the energy consumption in the network, An energy-aware opportunistic routing protocol is designed to calculate the energy consumption of transmitting packets between adjacent nodes through energy consumption model, and then calculate the energy consumed by each node to transmit data packets to the destination node. Then, a routing metric combining energy consumption and residual energy of nodes is proposed, and an algorithm for selecting and sorting candidate forwarding nodes is presented according to the routing metric. Finally, the packet sequence number (PSL) is used to coordinate the packet forwarding between candidate forwarding nodes and to reduce the repeated transmission of data packets. The simulation results show that the proposed protocol can effectively reduce the energy consumption in the network and balance the network energy. Because of the development of network coding technology, many scholars have introduced network coding into opportunistic routing. However, most of the code-coded opportunistic routing protocols take the ETX of the shortest path or the size of the encoding opportunity as the routing metric, and frequently select the node close to the destination node or the node with high coding opportunity to forward the data packet. Therefore, this paper proposes an integrated routing metric that combines the coding opportunities of nodes with the load in the node region, and then proposes an opportunistic routing protocol based on coding awareness based on this routing metric. By actively detecting the coding opportunities of nodes to find the balance between node coding and regional load, the experiments show that the proposed routing protocol can balance the network load better than the traditional code-aware opportunistic routing protocol. Improve network throughput and optimize network performance.
【學(xué)位授予單位】：安徽大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TP212.9;TN929.5

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本文編號(hào)：1671483