. ▁The ▁formal ▁We ight less - N ▁Standard ▁was ▁published ▁in ▁May ▁ 2 0 1 5 . ▁Both ▁Stand ards ▁are ▁available ▁to ▁Associ ate ▁and ▁Core ▁members ▁of ▁We ight less ▁S IG . ▁ ▁Techn ical ▁information ▁ ▁Setting ▁up ▁connections ▁ ▁In ▁networks ▁using ▁We ight less - W ▁technology ▁a ▁base ▁station ▁queries ▁a ▁database ▁which ▁ident ifies ▁the ▁channels ▁that ▁are ▁being ▁used ▁for ▁terrest rial ▁television ▁broadcast ▁in ▁its ▁local ▁area . ▁The ▁channels ▁not ▁in ▁use ▁– ▁the ▁so - called ▁white ▁space ▁– ▁can ▁be ▁used ▁by ▁the ▁base ▁station ▁to ▁communicate ▁with ▁terminal s ▁using ▁the ▁We ight less - W ▁protocol . ▁ ▁Terminal ▁end points ▁are ▁designed ▁to ▁be ▁low ▁cost ▁" fit ▁and ▁forget " ▁devices ▁– ▁meaning ▁that ▁they ▁are ▁expected ▁to ▁use ▁minimal ▁power ▁so ▁that ▁they ▁could ▁work ▁autonom ously ▁for ▁long ▁periods ▁close ▁to ▁the ▁typical ▁sh elf - life ▁of ▁a ▁battery ▁( pro bably ▁several ▁years ). ▁ ▁Security ▁Conc ern s ▁ ▁The ▁protocol ▁is ▁designed ▁to ▁be ▁at ▁least ▁as ▁secure ▁as ▁G SM . ▁ ▁Air ▁interface ▁ ▁The ▁We ight less - W ▁protocol ▁oper ates ▁in ▁the ▁TV ▁channels ▁band . ▁The ▁We ight less - W ▁protocol ▁div ides ▁the ▁band ▁into ▁channels . ▁A ▁database ▁is ▁quer ied ▁by ▁a ▁base ▁station ▁to ▁determine ▁which ▁channels ▁are ▁in ▁use ▁by ▁terrest rial ▁television ▁broadcast ▁stations ▁in ▁the ▁area , ▁and ▁which ▁ones ▁are ▁free ▁for ▁use