Key Technologies for 5G Wireless Communication Networks: a Physical Layer Approach Cesar Azurdia Meza, Joaquín Chávez, Hernán Arraño, José Novoa Universidad de Chile

General Diagnostic in Latin America

Current status: 2G and 3G Coverage as a Percentage of the Population in 2010 Source: CEPAL, con datos de la Unión Internacional de Telecomunicaciones (TUI), World Telecommunications Indicators Database 2012

What’s 5G? What is 5G going to do?

What we tend to think!!

1G and 2G

3G and 4G

Source: Cisco VNI Mobile, 2015

2G 3G OFDMA SC-FDMA MIMO + new tech. 4G 4G leans on 2G and 3G:

But for the future we want to achieve the following: Higher data rates Devices/machines connected to the network Automatization Machines interacting with our bodies and environment Spectrum crunch Old and rigid networks

To do so, we need the following! More spectrum is required Bandwidth re-allocation New networks

5G?

5G

How are we going to make it work?

Will 5G just be an evolution of 4G?

5G

5G is not an enhaced replacement for 4G!

1. Device-centric Architectures. Proposals 2. Millimeter Wave Technologies. 3. Massive MIMO. 4. Smarter Devices. 5. Native Support for M2M.

Device-centric Architecture Traditional radio access networks have been designed in “cells”. 5G  device-centric architecture: devices should be able to communicate by exchanging multiple information flows through several possible sets of heterogenous nodes.

5G Flexible Cell Technology

Millimeter Wave (mmWave) Technologies Fuente: Samsung DMC R&D Communications Research Team 2013

mmWave Experimental Bands

mmWave Channel Propagation Fuente: Samsung DMC R&D Communications Research Team 2013

mmWave Beamforming Fuente: Samsung DMC R&D Communications Research Team 2013

System Parameters & Test Results Fuente: Samsung DMC R&D Communications Research Team 2013

Massive MIMO Large array of antenna elements to provide diversity and compensate for path loss. Allows high resolution beamforming. Energy efficiency

Challenges for Massive MIMO Channel Estimation/Feedback. Fast Processing Algorithms.

Smarter Devices Better Feedback Information to Base Station. Allows Device to Device Communication. Allows use of Heterogeneous Networks. (Multiple RAT)

Challenges for Smarter Devices Inter-cell Interference. Efficient Medium Access Control. Device Discovery and Link Setup. Energy Efficiency.

M2M Machine to Machine Communications. Optimization and automatization of processes. Smart Grids, Smart Cities. E-Health.

Challenges for M2M Massive Access. Inter-Device Interference. Big Data. Security and Privacy. Energy Efficiency.

Conclusion 5G is the KEY to meet our long-term vision of FUTURE  COMMUNICATE PEOPLE AND THINGS!! There are huge challenges to overcome in the next 5 years. The research required for the development of 5G is now well underway. 5G IS COMING…