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| 折扣與優(yōu)惠：團(tuán)購最低可5折優(yōu)惠 - 了解詳情 | 論文格式：Word格式(*.doc) |  |
摘要:基于節(jié)點(diǎn)度的拓?fù)淇刂剖菬o線傳感器網(wǎng)絡(luò)中基于功率的拓?fù)淇刂频牡湫头椒?。從?jié)點(diǎn)度的角度進(jìn)行拓?fù)錁?gòu)造，對網(wǎng)絡(luò)的拓?fù)湫阅苋邕B通性、覆蓋性等有顯著影響。本文重點(diǎn)研究了典型算法LMA，該算法是基于局部信息的分布式算法，通過調(diào)節(jié)每個(gè)節(jié)點(diǎn)的發(fā)射功率，控制它的節(jié)點(diǎn)度落在一個(gè)給定的范圍內(nèi)，從而優(yōu)化節(jié)點(diǎn)之間的拓?fù)溥B接，延長網(wǎng)絡(luò)的生命周期。經(jīng)OMNeT4.0++平臺仿真實(shí)驗(yàn)表明： LMA算法能夠自適應(yīng)地實(shí)現(xiàn)網(wǎng)絡(luò)節(jié)點(diǎn)度的調(diào)節(jié)，在滿足網(wǎng)絡(luò)連通的前提下降低全網(wǎng)的能耗，該算法具有一定推廣應(yīng)用價(jià)值。 關(guān)鍵詞：無線傳感器網(wǎng)絡(luò)；拓?fù)淇刂?；功率控制；?jié)點(diǎn)度
Abstract:The topological control based on node degrees in wireless sensor networks is the typical method based on power control. From the angle of the node degree to structure the network, this method has a significant effect on the topological properties such as connectivity, coverage, etc. This paper mainly studies the typical algorithm LMA, which is a kind of distributed algorithm based on the local information. LMA controls the node degree of each node in a given range by adjusting the node’s transmitted power, so as to optimize the topology and prolong the lifetime of the network. The LMA simulation experiment in OMNeT4.0 + + platform shows that the algorithm can realize network nodes adaptively adjust to satisfy the degree. Under the premise of network connectivity, the energy consumption is reduced and this algorithm has certain application value. Keywords: wireless sensor network; Topology control; Power control; Node degree
拓?fù)淇刂剖侵笜?gòu)造一個(gè)優(yōu)化的拓?fù)浣Y(jié)構(gòu)：在滿足網(wǎng)絡(luò)覆蓋度和連通度的前提下，通過功率控制和骨干網(wǎng)選擇，剔除節(jié)點(diǎn)之間不必要的通信鏈路，形成一個(gè)數(shù)據(jù)轉(zhuǎn)發(fā)的優(yōu)化網(wǎng)絡(luò)結(jié)構(gòu)，使網(wǎng)絡(luò)具有最優(yōu)的能耗效率，兼顧通信干擾、網(wǎng)絡(luò)延遲、魯棒性等其他性能。拓?fù)淇刂萍夹g(shù)是無線傳感器網(wǎng)絡(luò)中最關(guān)鍵最重要的技術(shù)之一。由于無線傳感器網(wǎng)絡(luò)具有大規(guī)模、自組織、隨機(jī)部署、環(huán)境復(fù)雜、傳感器節(jié)點(diǎn)資源有限、網(wǎng)絡(luò)拓?fù)浣?jīng)常發(fā)生變化等特點(diǎn)，研究如何構(gòu)造出一個(gè)高性能的拓?fù)渚W(wǎng)絡(luò)以延長網(wǎng)絡(luò)生命周期成為一項(xiàng)挑戰(zhàn)性的課題。因此，網(wǎng)絡(luò)的拓?fù)淇刂婆c優(yōu)化在無線傳感器網(wǎng)絡(luò)研究中具有十分重要的意義。
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