期刊名称：International Journal of Innovative Research in Computer and Communication Engineering
印刷版ISSN：2320-9798
电子版ISSN：2320-9801
出版年度：2014
卷号：2
期号：4
出版社：S&S Publications
摘要：T he r a p i d t r a n s iti o n t o n a no s c a le I Cs h a s led t o t he inte g r at i o n o f high per fo r m a nce pr o c e s s o rs a nd high s p e ed, digit a l w irel e s s c o m m u nic at i o n cir c uits. F o r a l a r g e WSN ( Wirel e s s Sen s o r Ne t w o r k ) , s e n s o rs a re oft en hier a r c hic a lly o r g a nized into clu s t e r s , e a ch h av ing its o w n clu s t er he a d ( C H) . Within a clu s t e r , s en s o rs t r a n s m it d at a t o t heir C H , w hich i n t u r n fo r w a rds t he d at a t o t he s in k , ei t her direc t ly o r t hr o u g h a m u lti h o p p at h t hr o u g h ot h e r inte r m e dia t e C H s . T he c ov e rag e t i m e o f t he ne t w o rk is de fi ned a s t he t i m e u n t il o ne o f t he C H s runs o ut o f b att e r y , r e s ulting in a n inc o m plete c ov e rag e o f t he s en s ing r eg i o n. T he m a x i m iz at i o n o f t he c ov e rag e t i m e fo r a clu s t e r ed w i r eless s en s o r ne t w o rk by o p t i m a l b a l a ncing o f p o w er c o n s u m pti o n a m o ng c l u s t e r he a d s ( C H s ) . Clu s t e r i ng s i g nific a ntly r e d u c e s t he ene rg y c o n s u m pti o n o f in d i v i d u a l s e n s o rs, b u t it a l s o incre a s es t he c o m m u nic at i o n b u rd e n o n C H s . T o i n v esti gat e t his t r a de off , t he a n a l yt ic a l m o del inc o rp o r at es b ot h t he i n t ra a nd t he i n t er clu s t er t r aff ic. Us i ng a R ay lei g h fa di n g ch a n n e l m o d e l fo r inte r - cl u s t er c o m m u nic at i o n s , w e pr ov ide o pt i m a l p o w er a ll o c at i o n s t r at e g ies t h a t g u a r a nt e e ( in a pr o b a bi l i s t ic s e n s e) a n u p p e r b o u n d o n t he en d - to - end ( inte r - C H ) p at h r e li a bi l it y . O ur a ll o c at i o n s t r at e g ies a c co u n t fo r t he inter a c t i o n be t w e e n r o uting a nd clu s t e r ing by c o n s idering t he i m p a c t s o f intr a - a nd inte r - clu s t er t r a . c a t e a ch C H . T w o m e c h a n is m s a re pr o p o s ed fo r a chie v ing b a l a nced p o w er c o n s u m pti o n: t he r o utin g - a w a re o pt i m a l cl u s t er plan n i ng a nd t he c l u s t e r in g - a w a re o pti m a l r a n d o m r e l ay . F o r b ot h m e c h a ni s m s , t he pr o bl e m i s fo r m ula t ed a s a s i g n o m i a l o pt i m iz at i o n, w hich c a n be e . cien t ly s o l v ed u s ing g ene ra lized g e o m e t ric pr og r a m m ing.
