zigbee中繼傳輸技術(shù)研究及硬件實(shí)現(xiàn)

1、蘭州交通大學(xué)畢業(yè)設(shè)計(jì)（論文）I摘要近年來(lái)，隨著計(jì)算機(jī)技術(shù)、網(wǎng)絡(luò)技術(shù)與無(wú)線(xiàn)通信技術(shù)的高速發(fā)展和廣泛應(yīng)用，無(wú)線(xiàn)傳感器網(wǎng)絡(luò)成為一個(gè)在國(guó)際上備受關(guān)注的前沿?zé)狳c(diǎn)和研究領(lǐng)域。它在工業(yè)監(jiān)控、軍事、醫(yī)療健康、智能家居和其他商業(yè)領(lǐng)域有著廣泛的應(yīng)用前景。ZigBee技術(shù)是一種新興的短距離無(wú)線(xiàn)通信協(xié)議，因其功耗低、網(wǎng)絡(luò)容量大等優(yōu)點(diǎn)而非常適用于傳感器網(wǎng)絡(luò)。目前，ZigBee技術(shù)在國(guó)外已經(jīng)有了一定的應(yīng)用。ZigBee協(xié)議是由IEEE802.15.44標(biāo)準(zhǔn)的PHY

2、層和MAC層再加上ZigBee聯(lián)盟定義的網(wǎng)絡(luò)層和應(yīng)用層所組成，其突出的特點(diǎn)是網(wǎng)絡(luò)支持低成本、低功耗、低速率、短距離的數(shù)據(jù)傳輸。通過(guò)對(duì)ZigBee協(xié)議的網(wǎng)狀網(wǎng)絡(luò)組網(wǎng)方案的研究及仿真分析，提出了改進(jìn)的組網(wǎng)方案，簡(jiǎn)化了原方案中入網(wǎng)的流程，減小協(xié)調(diào)器對(duì)節(jié)點(diǎn)加入的處理時(shí)間。仿真發(fā)現(xiàn)改進(jìn)的組網(wǎng)方案能有效的減少了入網(wǎng)延遲，避免了沖突。針對(duì)AODV算法高控制開(kāi)的不足，提出了基于最快路徑的AODVjr算法，通過(guò)簡(jiǎn)化路由發(fā)現(xiàn)和路由表、刪除Hello消息以達(dá)

3、到降低控制開(kāi)銷(xiāo)的目的。為了更進(jìn)一步達(dá)到低控制開(kāi)銷(xiāo)的目的，本文提出AODVjr算法和ClusterTree算法相結(jié)合的ZBR路由算法，該算法既具有AODVjr的路由尋優(yōu)的能力，又具ClusterTree算法的無(wú)初始延遲的優(yōu)點(diǎn)。關(guān)鍵字：關(guān)鍵字：ZigBee協(xié)議協(xié)議無(wú)線(xiàn)組網(wǎng)無(wú)線(xiàn)組網(wǎng)無(wú)線(xiàn)傳感器網(wǎng)絡(luò)無(wú)線(xiàn)傳感器網(wǎng)絡(luò)蘭州交通大學(xué)畢業(yè)設(shè)計(jì)（論文）III目錄摘要...............................................

4、...............................................................................IAbstract.........................................................................................................................II1緒論......

5、...................................................................................................................11.1課題背景.................................................................................................

6、........12ZigBee協(xié)議概述....................................................................................................62.1ZigBee技術(shù)簡(jiǎn)介......................................................................................

7、.......62.1.1ZigBee技術(shù)優(yōu)勢(shì)...................................................................................62.1.2ZigBee的應(yīng)用.......................................................................................72.2ZigBee協(xié)議

8、棧架構(gòu)..........................................................................................82.2.1物理層..................................................................................................102.2.2MAC層.........

9、........................................................................................112.2.3網(wǎng)絡(luò)層..................................................................................................122.2.4應(yīng)用層..............

10、....................................................................................133ZigBee的網(wǎng)絡(luò)組網(wǎng)和路由研究..........................................................................143.1ZigBee網(wǎng)絡(luò)拓?fù)浣Y(jié)構(gòu)..........................

11、.........................................................143.2基于ZigBee的組網(wǎng)研究..............................................................................153.2.1鄰居設(shè)備列表......................................................

12、................................153.2.2網(wǎng)絡(luò)地址分配......................................................................................163.3.組網(wǎng)方案的設(shè)計(jì)............................................................................

13、...............183.3.1網(wǎng)絡(luò)初始化..........................................................................................183.3.2節(jié)點(diǎn)通過(guò)協(xié)調(diào)器加入網(wǎng)絡(luò)..................................................................213.3.3節(jié)點(diǎn)通過(guò)已有節(jié)點(diǎn)加入網(wǎng)絡(luò)

14、..............................................................233.4基于ZigBee的路由研究..............................................................................253.4.1ClusterTree算法..........................................

15、.......................................263.4.2AODVjr..................................................................................................263.4.3路由成本...........................................................

16、...................................273.4.4路由表和路由發(fā)現(xiàn)表..........................................................................283.4.5基本路由算法..................................................................................