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    Span Span Document Transcript

    • Span: An Energy-Efficient Coordination Algorithm forTopology Maintenance in Ad Hoc Wireless NetworksBenjie Chen, Kyle Jamieson, Hari Balakrishnan, and Robert Morris ¢¡¤£¦¥¨§©¡¥¨§¥¨§ ¥¨!#"%$&(¦§0)¢1¦23¦451678¡¨969@¡&16A&$¤9B¦CD9#E¦4F9¦G2DG$H(I¥QPR616A&45¥¨ST¥VUW¡!X£@§¦2GYBU&6`a78¡¨969@¡&16A&$¤9B¦CD96`cb¨d&egfihprqRsut¨v©wTsyx¨vV€XwTs@‚©ƒgt¢xH„…€†VwCx‡†©ˆV‰y‘0’”“@‚@•–Xw”ˆ•–s@—F˜Abstract™‡duegf0hijhBk3l#h¦lmknfDkno6pmfrq©s¦t©u@vwixhBy(zFk3l0fmi({ego@|Ipmkn}Gd@o@e–~6@k€‚y©lƒ @„…pme…†‡d@yVhˆiV‰ˆd@y6}‡zŠe…lmkn„gknfDf&o@k3p”z‡y©lm‹f¤pmdip¤lmk(‰uu}nknfiknouk3lm|©Œ}ny©ou†fD ƒ hupmegyVozŠe…pmd@y©upŽfDeg|Voueg@}(i©o6pm„…Œ‰ue ƒ ego@egfDd@egou|‘pmduka}(ijhi©}3egp”Œ’y©l}3yVo@oukn}3pmeg{e…pTŒWy©€¨pmd@kRo@k3p”z‡yjlm‹r“u”hijo‘•u@eg„–‰uf‡y©o‘pmdukRy©•@fDk3lm{©ijpmegy©opmd@ijp&zŠd@kno‘i5lmkn|©egyVoWy©€i¢fDdilmk(‰¦†‡}Gdi©ouo@kn„¦zŠe…lmkn„gknfDf‡o@kCpTz‡yjlm‹ad@i©fi fDu–—}negkno6p‰¦kno@fDe…pTŒyj€…o@y‰¦knfnvyyVo@„…Œi˜f ƒ ij„–„io ƒ •Bk3l¢yj€‡pmd@k ƒouknk(‰‘•BkwyVo™ip%i©o6ŒWpme ƒ kRpmya€šyjlDz…ijlG‰˜pDlGi–—}¢€šyjlRi©}3pmeg{›kw}ny©o@oukn}3†pmegy©o@fn“”hijoœegf‘i0‰uegfpDlmeg•@¦pmk(‰¨vilGi©o@‰uy ƒ e–ž3k(‰œij„–|©y©lme…pmd ƒ zŠduk3lmk™o@y‰¦knfƒ ij‹›kŸ„gy6}(ij„…‰ukn}3e–fDegy©o@fyVo#zŠduk3pmd@k3lŽpmy™fD„gknknh¨vyjlˆpmyˆ yVego¡iŸ¢3£©¤3¥¦ t©¤§©¨šu6©aªmt›«G¬Vªm£©ur­5ijfFia«G£(£j¤D§©¨šut©®‡£©¤G“¦¯Hij}Cdao@y‰ukŠ•@i©fDknfie…pmfF‰¦kn}ne…†fDegy©oŸyVo—ijoaknfpme ƒ ipmk…y©€Bduyz ƒ ijoŒŽyj€Be…pmfio@kneg|Vd•ByjlmfizŠeg„g„@•Bk3o@k3up€°lmy ƒ e…p%•Bknego@|—inz…ij‹›kVvi©o‰Wpmd@kŽi ƒ yV@o6p…yj€ikno@kClm|©Œ˜i{©i©eg„–i©•u„gkŽpmye…p(“B±#k|©eg{›kaiŸlGijo‰uy ƒ egžnk(‰i©„g|Vyjlme…pmd ƒ zŠduk3lmk}ny6y©lG‰¦e–o@ijpmyjlmf¢lmy©†pGipmk¢zŠe…pmd˜pme ƒ kVv‰¦k ƒ yVoufpDlGijpmego@|ˆd@y(zX„gy6}(i©„gegžnk(‰™o@y‰¦kŽ‰ukn}3e–fDegy©o@f„gk(i©‰ pmy—ia}3yVo@oukn}3pmk(‰rv@}ni©hij}ne…pTŒ†‡hulmknfDkClm{¦egou|Ÿ|V„gyV•@i©„¨pmyVhByV„gy©|©Œ6“² ƒ hulmy{›k ƒ k3opaegoIfŒufpmk ƒ „–e…€‚k3pme ƒ k‰¦@k˜pmy³”hijoœego@}3lmkni©fDknf˜i©fpmduk5lGijpmegy—yj€¤e–‰u„gk3†´pmy©†‡fD„gknknhck3o@k3lm|jŒ }3yVo@fD ƒ hupmegyVo‘ego@}3lmkni©fDknfnvi©o‰egou}3lmk(i©fDk3f˜ijfWpmduk™‰uk3o@fDe…pTŒ³y©€5pmd@kcouk3pTzFy©lm‹¡ego@}3lmk(ijfDknfn“…µuy©l‘k3¶†i ƒ h@„gkVv&yV¦lWfDe ƒ @„–ipme–y©o@f—fDduyz·pmd@ijp—zŠe…pmd¸i’hulGij}3pmeg}(i©„%kno@kClm|©Œƒ y‰¦kn„¹v›fŒ¦fpmk ƒ „ge…€šk3pme ƒ kŠy©€¨ijoWºV»›¼6“g½V½Ro@k3p”z‡y©lm‹ˆegoŸhBy(z‡k3lHfmi({¦egou|ƒ y‰¦kFzŠe…pmdW”¦h@i©oˆe–f&iR€ši©}3pmyjlFyj€pTzFy¢•Bk3pDpmk3l¤pmd@i©ozŠegpmduyV¦p(“6”hi©oego6pmkn|jlGijpmknfio@eg}nk3„gŒŽzŠe…pmdŸº©»›¼6“–½©½C¾rzŠd@knoŸlmuoˆego}nyVoj uo@}3pmegyVoˆzŠegpmdpmdukaº©»›¼6“–½©½ŸhBy(z‡kClwfmi({¦egou| ƒ y‰¦kVvr”hijo’e ƒ h¦lmyj{VknfR}3y ƒ—ƒ uo@eg}(i†pmegy©oc„–ijpmknou}3Œ6v@}ni©hij}ne…pTŒ6v@i©o@‰ fŒ¦fpmk ƒ „ge…€šk3pme ƒ kV“1. 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