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1、華中科技大學(xué)博士學(xué)位論文無(wú)線傳感器網(wǎng)絡(luò)層次拓?fù)淇刂扑惴ㄑ芯啃彰簻珡?qiáng)申請(qǐng)學(xué)位級(jí)別:博士專業(yè):控制理論與控制工程指導(dǎo)教師:汪秉文2010-05-28
華中科技大學(xué)博士學(xué)位論文節(jié)點(diǎn)選擇比較合理,同時(shí)數(shù)量比較充足,則會(huì)使網(wǎng)絡(luò)節(jié)點(diǎn)在發(fā)送數(shù)據(jù)到下一跳節(jié)點(diǎn)時(shí)不僅能夠節(jié)省很多能量,同時(shí)也會(huì)使鄰居節(jié)點(diǎn)集合中節(jié)點(diǎn)的剩余能量比較均衡。因此,論文提出了基于鄰居集合的兩個(gè)拓?fù)淇刂扑惴≧NS-MCRP和NS-MCRP。在分簇拓?fù)渲?,?jié)點(diǎn)之間的數(shù)據(jù)傳輸方式可以是多跳傳輸也可以是單跳傳輸。但是,對(duì)于某個(gè)具體的拓?fù)淇刂扑惴ǖ哪硞€(gè)具體的簇來(lái)說(shuō),可能由于多跳機(jī)制的不合理性,導(dǎo)致多跳傳輸方式的能
2、耗大于單跳傳輸方式的能耗。因此,可通過(guò)尋找一個(gè)能耗臨界點(diǎn)來(lái)設(shè)計(jì)基于混合傳輸方式的拓?fù)淇刂扑惴??;谏鲜鏊枷?,文章提出了基于混合傳輸?shù)耐負(fù)淇刂扑惴∕S-LEACH。在層次型拓?fù)淇刂浦?,基于骨干?jié)點(diǎn)的拓?fù)淇刂扑惴ㄊ菍?duì)基于分簇結(jié)構(gòu)的拓?fù)淇刂扑惴ǖ囊环N擴(kuò)展?;诠歉晒?jié)點(diǎn)的拓?fù)淇刂扑惴ㄒ话悴捎脝l(fā)式算法實(shí)現(xiàn)。所生成的骨干節(jié)點(diǎn)組成了數(shù)據(jù)轉(zhuǎn)發(fā)與收集的骨干網(wǎng),并且該骨干網(wǎng)覆蓋了網(wǎng)絡(luò)中所有的非骨干節(jié)點(diǎn)。因此,基于上述思想,論文提出了基于骨干節(jié)點(diǎn)的拓?fù)淇刂扑惴╒BT-EBHRP,同時(shí)也提出了構(gòu)造近似最小數(shù)目的骨干網(wǎng)構(gòu)造算法MCDSA。在無(wú)線傳感器網(wǎng)絡(luò)中,構(gòu)造近似最小數(shù)目節(jié)點(diǎn)的骨
3、干網(wǎng)對(duì)于減少傳輸?shù)臄?shù)據(jù)包、降低干擾、降低延時(shí)都具有重要作用。論文最后對(duì)全文進(jìn)行總結(jié),指出文章的創(chuàng)新點(diǎn)以及提出了今后可繼續(xù)研究的工作。關(guān)鍵詞:無(wú)線傳感器網(wǎng)絡(luò),層次型拓?fù)淇刂?,能量均衡,分簇拓?fù)淇刂扑惴?,骨干網(wǎng)拓?fù)淇刂扑惴↖I
華中科技大學(xué)博士學(xué)位論文AbstractTopologyControlisakeytechnologyofWirelessSensorNetwork(WSN).Thetopologycontrolalgorithmscannotonlyimprovethenetworkstructurebutalsoprovidethebasicplat
4、formforthealgorithmsoftheothernetworklayers.WSNisanenergyconstrainednetwork,andthetopologycontrolalgorithmcanconstructaspecialnetworkstructuretoimprovethenetworklifetimeaswellastheenergybalanceofthenetwork.Thus,sometopologycontrolalgorithmsaredesignedbasedontheenergyconstrainedWSNt
5、oprolongthenetworklifetimeaswellasimprovetheenergybalance.Iftheconnectivityaswellasthecoverageissatisfied,themanagementofthenodesisoptimizedbyatopologycontrolalgorithm,whichadjuststhetransmissionpowerandselectstheappropriatebackbonenodesanddeletestheredundantlinks.Thehierarchytopol
6、ogycontrolisaveryimportantkindofthetopologycontrolstrategy,whichselectsthebackbonenodesanddividesthenetworkintodifferentsub-networkswithdifferentlevels.Thehierarchytopologymakesthenon-backbonenodessleepwhenthenodesarenotcommunicating.Meanwhilethebackbonenodesfusethecollecteddatafor
7、savingenergybydecreasingthenumberofthepacketdatasenttothenexthops.Intheclusteringtopologycontrol,themaintenanceofthelinkbetweenanypairnodesisnotneededandthenetwork’srunningisbasedontherounds.Ineveryround,allnodesparticipateintothenetworkreconstruction.Intheprocessofreconstruction,t
8、heselectionoftheclusterhea