LTE in unlicensed spectrum continues to be a hot topic at this year's Mobile World Congress in Barcelona and in this interview, Dr. Yongbin Wei, Senior Director of Engineering at Qualcomm Technologies, Inc., shares his insights on the multiple options that are now available to expand the benefits of LTE to unlicensed spectrum, and how the evolving LAA will help to pave the way for MulteFire and further expand the LTE ecosystem.