Technology Enablers for Next-Generation Mobile Networks

Jiri Hosek, Ph.D.

Youth School-Seminar, DCCN 2016

RUDN University, Moscow, November 23, 2016

*These slides are intended for educational purposes and include materialpublished by WISLAB group as well as available openly on the Internet.

Series of Lectures and Tutorials: Schedule

• Lectures:

• Wednesday, November 23, 10:00 – 10:30

• Technology enablers for next-generation mobile networks

• Thursday, November 24, 10:00 – 11:00

• Emerging communication protocols and technologies for the Internet of Things domain

• The path from QoS- to QoE-centric management of modern communication systems

• Tutorials:

• Wednesday, November 23, 10:30 – 12:30

• Communication between devices within LAN/WLAN networks

• Implementation of 4G cellular communication within the SmartGrid ecosystem – part 1

• Thursday, November 24, 11:00 – 14:00

• Implementation of 4G cellular communication within the SmartGrid ecosystem – part 2

• Implementation of QoS mechanisms for Device-to-Device (D2D) communication between mobile devices

Lecture’s content

• Evolution of wireless communication systems

• Definition of 5G and its main goals

• 5G technology enablers

• Intelligent muti-radio access technologies

• Network densification

• Ultra-high frequency communications

• Massive MIMO

• Dynamic spectrum sharing

• Device-to-device communication

Evolution of Wireless Communication Systems

• One of the fastest growing and increasingly dynamic sector

• It has developed just over last 40 years from its very basic form to highly-advanced ecosystem providing ubiquitous connectivity to variety of users and applications

• We are on the doorway of new era of wireless technologies

• 5th generation (5G)

What 5G will be about?

• Network statistics in 2015

• 36 % smart devices (of the total global mobile devices) are responsible for 89 % of total mobile data traffic

• 97 million wearable devices generated 15 petabytes of monthly traffic

• Highly heterogeneous end-to-end ecosystem providing:

• Anytime & anywhere connectivity of data rates of up to several Gb/s per user

• Support of hundreds of thousands of connections

• First true communication platform unifying people and machines

• First commercial deployments of 5G at the Tokyo Olympics in 2020 and beyond

Key 5G Goals

• Very high degree of flexibility & intelligence of all technology components (services “on-demand”)

• Nearly unlimited capacity and ubiquitous coverage (anytime & anywhere)

• Significant increase in network capacity and throughput (1 - 10 Gbps)

• Extremely low end-to-end latency (below 1 ms)

• Unrestricted mobility to enhance the mobile broadband even for very fast moving objects (up to 500 km/h)

• Ultra high connection density (up to 100-fold growth in connected devices)

• Energy efficient communication to reduce power consumption up to 90%

Envisioned Heterogeneous Network Concept of 5G

5G Technology Enablers

• Novel technology approaches to fulfil overall network capacity requirements have to be developed

• Tighter inter-working between various Radio Access Technologies (RATs)

• User-transparent mix of directly linked communication technologies

• Heterogeneous Networks (HetNets) as a key constructional block of 5G

• Extreme network densification

• Wireless communications in ultra-high frequency band (mmWave)

• Massive Multiple Input Multiple Output (MIMO) transmissions

• Advanced spectrum sharing techniques

• Licensed Shared Access (LSA)

• Software-defined Networks (SDN) / Network Function Virtualization (NFV)

• Proximity-based Device-to-Device (D2D) communications

• Extremely energy efficient communications (Green communications)

Intelligent Use of Multiple RATs

• HetNet = multi-tier + multi-RAT

Extreme Network Densification• Hyper-dense deployment of small cells

is crucial in addressing the network capacity requirements.

• Operator- / user-installed

• Indoors, outdoors, at homes, offices, enterprises, shopping malls and lamp posts, etc.

• Interference management and robust mobility are the key factors of ultra-dense network to deliver reliable user experience.

mmWave Wireless Communications

• Most recent game-changing development for wireless systems

• Frequency range around 30 to 300 GHz

• Currently most perspective for 5G: ~60 GHz

• IEEE 802.11ad (WiGig)

• Transmission rates up to tens of Gb/s

• Many challenges in signal propagation

• Short-range communication sensitive to obstacles and interferences

• Up to few meters

• Narrow beamforming

Massive MIMO

• MIMO (Multiple Input Multiple Output)

• Set of transmission and reception techniques

• Widely deployed in commercial cellular networks and WLANs

• Massive MIMO

• Very large antenna array at each base station

• A large number of users are served simultaneously

• Higher network capacity

Licensed Shared Access (LSA)

• An emerging concept for spectrum sharing

• Employing the capacity of underutilized frequency bands in a controlled manner

Proximity-based D2D Communications

• Part of 3GPP LTE Rel. 12

• Users in proximity can establish a direct communication without utilizing complete infrastructure

• Alternative wireless technologyto extend the network capacity

• Mobile data offloading

• Cellular network is providingthe information about users‘ location

Full-Scale 4G Testbed @ Brno University of Technology• Huawei: LTE-EPC-IMS, 3GPP Rel. 10

• Complex mobile heterogeneous system

• Seemless offloading between LTE and WiFi

• 5 LTE-A cells, 2 eNBs, 2 WiFi APs,

• 3x 700 MHz indoor cells (Band 17 – AT&T), 5 MHz FDD, 2x2 MIMO

• 1x 2600 MHz indoor cell, 5MHz, FDD, 2x2 MIMO

• 1x 1800 MHz outdoor cell, 5MHz, FDD

• WiFi bands: 2.4 and 5 GHz

• Development and experimental testing of new 5G services

• Proximity-based D2D services

• Power management algorithms for LTE

• M2M traffic optimization for 4G mobile networks

• QoE-driven mobile traffic modelling

Full-Scale 4G Testbed @ Brno University of Technology (2)

• Network architectureincluding:

• Radio access network

• Core network

• IP Multimedia Subsystem (IMS)

LTE-Assisted WiFi Direct Implementation

• LTE-Assisted WiFi Direct prototype

• Significant operator & user benefits from “next generation” proximity services

• Battery/channel efficient, private, secure discovery of nearby devices and services

• Automated, robust device-to-device (D2D) connectivity and service continuity

• Licensed bands offloading and enriching applications and services in current mobile ecosystem

• 3GPP-compliant technology ratified in LTE Rel.-12 and 13 Video of unique trial of network-assisted D2D technology

Summary

• We are on the road and we already know what 5G will be about!

• 5G is coming to change our way of thinking about communication technologies

• Still too many challenges and open issues in all aspects to be solved

• (industrial) IoT is the main driver for deployment of 5G wireless networks

• Tactile Internet

• Augmented / virtual reality

Thank you for your attention!

Questions?