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LTE in unlicensed spectrum
LTE in unlicensed spectrum (LTE-U) is a proposal, originally developed by Qualcomm, for the use of the 4G LTE radio communications technology in unlicensed spectrum, such as the 5 GHz band used by dual-band Wi-Fi equipment. It would serve as an alternative to carrier-owned Wi-Fi hotspots.
==LTE in Unlicensed spectrum (LTE-U)==
LTE-U would allow cellphone carriers to boost coverage in their cellular networks, by using the unlicensed 5 GHz band already populated by Wi-Fi devices. T-Mobile and Verizon Wireless have indicated early interest in deploying such a system as soon as 2016. While cell providers ordinarily rely on the radio spectrum to which they have exclusive licenses, LTE-U would share space with Wi-Fi equipment already inhabiting that band – smartphones, laptops and tablets connecting to home broadband networks, free hotspots provided by businesses, and so on.
LTE-U is intended to let cell networks boost data speeds over short distances, without requiring the user to login to a separate Wi-Fi network as they normally would. It differs from Wi-Fi calling; there remains a control channel using LTE, but all data (not just phone calls) flows over the unlicensed 5 GHz band, instead of the carrier's frequencies.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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