james rogers jamesrbestcom 9802 316 pm gary lawrence murphy wrote j james rogers writes j example able model rf propagation three j dimensions metro area deploying wireless networks j every single tree building detail similar j see even tiny dead spots due physical blockage j signal attenuation hmmm thought words practical uses whatsoever biz guys office really think wisps really going shell money find house two cant reach experience suggests wont care b even sign errant house give runaround blaming deadspot unsupported vendor equipment errrrthe biz guys office dont care wisps want little wifi networks bandwidth shadows cities surprisingly large common arent selling software pretty pricy happens using optimize next generation wireless canopies metro areas fiber networks large scale essentially infinite number metro wireless configurations generate far dead marginal spots others expensive operate due backhaul transit considerations software used tool optimize canopy coverage minimize actual transit costs since wireless tied fiber multiple points canopies talking arent shortrange wifi technologies mixture longrange highperformance wireless networking bandwidth measured tens hundreds mbits ranges measured miles well hundred miles extreme end ranges bandwidth levels cost providing network easily vary order magnitude depending manage rf shadows proximity fiber access points idea ultimately optimize cost performance existing network infrastructure providers remotely compete maintain profitability surprisingly low bar time networks designed level largescale optimization cost per mbit maximizing coverage effective bandwidth available per unit area case companys longterm plans type capability absolutely necessary keep things sane least investors find capability sexy compelling especially since lovely visualization engine tied system cli batches never effect even efficient james rogers jamesrbestcom sun 08 sep 2002 165409 0700 whoa