本文關(guān)鍵詞：傳感器網(wǎng)絡(luò)簇間通信自適應(yīng)節(jié)能路由優(yōu)化算法，，由筆耕文化傳播整理發(fā)布。

第33卷第3期 2012年3月

通 信 學(xué) 報 Vol.33 No. 3

Journal on Communications

March 2012

傳感器網(wǎng)絡(luò)簇間通信自適應(yīng)節(jié)能路由優(yōu)化算法

李文峰，沈連豐，胡靜

（東南大學(xué) 移動通信國家重點實驗室，江蘇 南京 210096）

摘 要：提出了一種用于無線傳感器網(wǎng)絡(luò)簇間通信的自適應(yīng)節(jié)能路由優(yōu)化算法。網(wǎng)絡(luò)中以總體通信能耗最小為首要原則建立端到端之間的路由，并對簇間通信提出了一種優(yōu)化算法，使得簇首之間相互通信時，可以在直接、中繼以及協(xié)作3種不同方式中自適應(yīng)地選擇最節(jié)能的通信方式。所提出的路由算法可確保源節(jié)點與基站通信過程中選擇到最優(yōu)或次優(yōu)的節(jié)能路由，并可降低由于通信覆蓋盲區(qū)造成的通信中斷的概率。仿真結(jié)果表明，與其他傳感器網(wǎng)絡(luò)路由算法相比，所提出的路由算法在相同吞吐量和誤碼率前提下每一輪都消耗更少的能量，并且在不同的節(jié)點密度下都可有效地延長網(wǎng)絡(luò)的生命周期和工作時間。 關(guān)鍵詞：傳感器網(wǎng)絡(luò)；節(jié)能；簇間通信；路由

中圖分類號：TN915 文獻標識碼：A 文章編號：1000-436X(2012)03-0010-10

Adaptive energy-saving routing algorithm for inter-clustering communications in WSN

LI Wen-feng, SHEN Lian-feng, HU Jing

(National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China)

Abstract: An adaptive routing algorithm was proposed for saving inter-clustering communication energy in wireless sensor networks (WSN). In the network, the end-to-end route discovery mechanism was based on the primary principle of the minimum communication costs. An algorithm was proposed for inter-clustering communication optimization by adaptively selecting the most energy-efficient communication mode among direct, relaying and cooperative communica-tions. The proposed routing algorithm guarantees that the source node can discover the minimum or sub-minimum energy consumption route to the base station. It also decreases the probability that the communications are interrupted due to the coverage holes. Compared with the other routing algorithms, the simulation results show that the proposed routing algo-rithm makes WSN consume less energy in each round under the same throughput and bit error ratio (BER). It can also prolong the network lifetimes and operation times under the different node densities. Key words: sensor network; energy saving; inter-clustering communication; routing

1 引言

無線傳感器網(wǎng)絡(luò)（WSN, wireless sensor net-

works）是由傳感器節(jié)點通過無線通信技術(shù)自組織構(gòu)

由大量高度集成的小型傳感器節(jié)點構(gòu)成成的網(wǎng)絡(luò)[1]。

的大規(guī)模無線傳感器網(wǎng)絡(luò)，在遠程大氣監(jiān)測以及地

收稿日期：2011-07-15；修回日期：2012-01-04

基金項目：國家科技重大專項基金資助項目（2010ZX03006-002-01）；國家自然科學(xué)基金資助項目（60872004）；東南大學(xué)移動通信國家重點實驗室自主研究基金資助項目（2011A08）

Foundation Items: The Important National Science & Technology Specific Projects (2010ZX03006-002-01); The National Natural Science Foundation of China (60872004); The Research Fund of National Mobile Communications Research Laboratory, Southeast University (2011A08)

  本文關(guān)鍵詞：傳感器網(wǎng)絡(luò)簇間通信自適應(yīng)節(jié)能路由優(yōu)化算法，由筆耕文化傳播整理發(fā)布。