The LTE-U Forum was formed in 2014 by Verizon in cooperation with Alcatel-Lucent, Ericsson, Qualcomm Technologies, Inc., a subsidiary of Qualcomm Incorporated, and Samsung.
The forum collaborated together and generated the technical specifications that include: minimum performance specifications for operating LTE-U base stations and consumer devices on unlicensed frequencies in the 5 GHz band, and coexistence specifications. The specifications support LTE operation in the 5 GHz UNII-1 and UNII-3 bands as Supplemental Downlink (SDL) carriers, in conjunction with an LTE deployment in licensed bands, based on 3GPP already published Release 10 and later specifications.
LTE-U extends the benefits of LTE and LTE Advanced to unlicensed spectrum, enabling mobile operators to offload data traffic onto unlicensed frequencies more efficiently and effectively. With LTE-U, operators can offer consumers a more robust and seamless mobile broadband experience with better coverage and faster download speeds.