Just when you think WiMax has regained its standing, it faces another setback. A month ago, WiMax got a big boost when Clearwire (NSDQ: CLWR) announced that it would merge its WiMax efforts with Sprint’s (NYSE: S) and receive a billion-dollar plus investment from Google (NSDQ: GOOG), Intel (NSDQ: INTC), and three cable companies. But yesterday, equipment-maker Nortel Networks announced that it will discontinue its WiMax research and development and instead will focus on developing rival LTE, reports AP. Of course, LTE is the evolution path that many wireless heavy-weights have chosen, including AT&T (NYSE: T), Verizon Wireless (NYSE: VZ), T-Mobile and Vodafone (NYSE: VOD). However, Nortel said it will continue to sell WiMax equipment through a reseller agreement with equipment vendor Alvarion.