Verizon Says Its First Commercial LTE-U Products Coming Next Year
Verizon expects its first LTE-U products -- small cells for enterprise indoor uses -- to roll out next year, said Patrick Welsh, assistant vice president-federal regulatory affairs. Field tests this fall will use different LTE-U configurations alongside existing Wi-Fi in…
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a pair of office buildings, Welsh said. LTE-U has become an increasingly heated battleground between wireless carriers and Wi-Fi advocates such as the cable industry over concerns of LTE-U interference with Wi-Fi (see 1509100035). At the CTIA conference this month in Las Vegas, FCC Chairman Tom Wheeler urged the industries to jointly create their own interference standards. "We expected folks to have questions about new technology," Welsh said Wednesday at a Verizon briefing and demo for reporters on LTE-U. The pushback "is part of the process," he said. But Welsh said he was surprised by the level of opposition in the face of test data and LTE-U specifications. Cable companies "are asking ... to be essentially the gatekeepers of unlicensed spectrum," Welsh said. Some LTE-U interference criticism has involved lack of "listen before talk" access features such as in Europe and Japan. There's nothing stopping Qualcomm and Verizon from adding "listen before talk" to its LTE-U, except that it would delay rollout, said Tamer Kadous, Qualcomm director-engineering. "It's wrong to think LTE-U is inferior to Wi-Fi because it doesn't have 'listen before talk,'" Welsh said, saying the European and Japanese standard exists because of government radar installations, not Wi-Fi. "We don't have those government radar systems here, so we don't have those government regulations," Welsh said. Qualcomm and Verizon demonstrated their LTE-U/Wi-Fi interoperability testing, with a Qualcomm test room lined with multiple Wi-Fi access points and an LTE-U access point that was switched on as the company measured throughput -- which remained unchanged. "This is a very extreme case, a harsh interference environment," said Dean Brenner, Qualcomm senior vice president-government affairs. In the second part of the testing, an array of smartphones all streamed YouTube video, while one conducted a Skype call, in the same room. "What matters is not paper specifications -- what matters is the consumer experience," Brenner said.