▁implementation ▁would ▁comp ly ▁with ▁this ▁standard ▁to ▁co oper atively ▁share ▁the ▁available ▁TV ▁White Space ▁spectrum . ▁ ▁Dev ices ▁ ▁Currently ▁the ▁majority ▁of ▁the ▁devices ▁that ▁are ▁en vision ed ▁to ▁use ▁the ▁We ight less ▁standard ▁are ▁mainly ▁of ▁industrial ▁and ▁medical ▁type , ▁such ▁as ▁smart ▁electric ▁meters , ▁health ▁mon itors , ▁vehicle ▁tracking , ▁etc . ▁ ▁Spec ifications ▁and ▁features ▁ ▁The ▁original ▁We ight less ▁specification , ▁now ▁called ▁We ight less - W , ▁was ▁initially ▁developed ▁as ▁an ▁open ▁standard ▁machine - to - machine , ▁low - cost , ▁low - power ▁communication ▁system ▁for ▁use ▁in ▁the ▁white ▁space ▁between ▁TV ▁channels ▁in ▁ 2 0 1 1 ▁by ▁engine ers ▁working ▁at ▁Ne ul ▁in ▁Cambridge , ▁UK . ▁The ▁We ight less - W ▁specification ▁is ▁based ▁on ▁time - div ision ▁du plex ▁technology ▁with ▁spread ▁spectrum ▁frequency ▁ho pping ▁in ▁an ▁attempt ▁to ▁minim ise ▁the ▁impact ▁of ▁inter ference ▁and ▁with ▁variable ▁spread ing ▁factors ▁in ▁an ▁attempt ▁to ▁increase ▁range ▁( at ▁the ▁exp ense ▁of ▁lower ▁data ▁rate ) ▁and ▁to ▁accommod ate ▁low ▁power ▁devices ▁with ▁low ▁data ▁rates . ▁ ▁The ▁specific ations ▁were ▁final ised ▁with ▁the ▁creation ▁of ▁version ▁ 1 . 0 ▁in ▁ 2 0 1 3 . ▁ ▁Vers ions ▁ ▁We ight less ▁v 1 . 0 ▁The ▁formal ▁We ight less - W ▁Standard ▁was ▁published ▁in ▁February ▁ 2 0 1 3