Towards 5G HetNets: Speaker Introduction

Jeffrey G. Andrews Wireless Networking and Communications Group (WNCG)

Dept. of Electrical and Computer Engineering The University of Texas at Austin

IEEE Comm. Theory Workshop Curacao

May 2014

5G and 10,000x the bps/Hz/km2: where will the gains come from?

Bandwidth (20x more Hz)

Only one place to go: mmWave (Also LTE-U as stopgap)

Spectral efficiency (10x more bps/Hz)

More dimensions (massive MIMO) Interference suppression?

Effective Density (50x More Loaded BSs/km2):

Efficient HetNets, small cell and WiFi offloading, maybe D2D

4G

5G

mmWave + HetNets •  very complementary •  densifying mmWave cells

yields huge gains (SNR plus cell splitting)

•  Can possibly do self-backhauling! mmWave + massive MIMO

•  Some competition here •  Improved SINR via

mmWave with high gain antennas, interference goes to zero?

HetNets + massive MIMO •  HetNets may not be able to

utilize massive MIMO •  Cost a key challenge here

Your Speakers

•  Ted Rappaport (NYU) •  The Messiah of millimeter Wave •  “Millimeter Wave Cellular Communications: Channel Models, Capacity

Limits, Challenges and Opportunities” •  Two senior 3GPP contributors and inventors

•  That is, two of the guys who will actually design the 5G air interface •  Preben Mogensen (NSN and Aalborg University) •  “Looking Ahead to 5G: Building a Virtual Zero-Latency Gigabit Experience”

•  Erik Dahlman (Ericsson Research) •  “Radio Access of the Future: Where to Go?”

•  Martin Haenggi (University of Notre Dame) •  Top theoretician on stochastic geometry applied to wireless networks •  “5G: The Quest for Cell-Less Cellular Networks”

•  Gerhard Fettweis (Vodafone Chair, TU Dresden) •  5G keynote last year’s CTW on “Tactile Internet”, this year will talk about

a key challenge behind densification •  “HetNet Wireless Fronthaul: The Challenge Missed”