Keynote Talk #1: Ultra reliable and low latency communication in 5G

The new wave of the technology revolution, named the fourth industrial revolution, is changing the way we live, work, and communicate with each other. In order to support unprecedented services and applications requiring lower latency, better reliability, massive connection density, and improved energy efficiency, the International Telecommunication Union (ITU) defined three representative service categories, viz., enhanced mobile broadband (eMBB), massive machine-type communication (mMTC), and ultra-reliable and low latency communication (URLLC). Among three categories, physical layer design of the URLLC service is perhaps the most challenging and problematic since URLLC should satisfy two challenging requirements: low latency and ultra-high reliability. In this talk, I will explain the state-of-the-art overview of URLLC communications with an emphasis on physical layer challenges and solutions.