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Wireless Networks and Services 10 Years Down the

Road   

  Ross MurchRoss MurchProfessor, Electronic and Computer Professor, Electronic and Computer

EngineeringEngineeringDirector, Centre for Wireless Information Director, Centre for Wireless Information

TechnologyTechnology

The Hong Kong University The Hong Kong University of Science and Technologyof Science and Technology

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Wireless RevolutionWireless Revolution

VoiceVoice

Yesterday- 1999Yesterday- 1999

Millions ofMillions of wireless devices

SMSSMS

Today- 2009Today- 2009

Billions ofBillions of wireless devices

EmailEmail

Mobile TVMobile TV

VideoVideo

InternetInternet

WiFiWiFi

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Wireless EverywhereWireless Everywhere

Tomorrow- 2019Tomorrow- 2019TrillionsTrillions of Wireless devices of Wireless devices

VariousVariousInfo/MediaInfo/Media

New MobileNew MobileDevicesDevices

Distributed Distributed EnvironmentalEnvironmental& Bio Sensing& Bio Sensing

Smart RFIDSmart RFID

People to PeoplePeople to People People to machinesPeople to machines Machines to MachinesMachines to Machines

Next Next generation generation phonesphones

Medical Medical applicationsapplications

SecuritySecurity

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ChallengesChallenges

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What is Next for Wireless What is Next for Wireless Communications?Communications?

   

 

In broadband access WiMAX and LTE promise extremely high peak rates

However this is just for one user in one cell

What happens when we have Trillions of users

Wireless aggregated capacity will need to increase enormously

How can this challenge be met?

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• What can we do?

Increasing CapacityIncreasing Capacity

)/1(log 2 NPBC iiChannels

Increase BandwidthCognitive RadioMore Channels

MIMO

Increase PowerCooperative systems

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MIMO- Large MMIMO- Large M• Capacity linear in the number of antennas• Makes sense to make N as large as possible • Instead of 2 antennas lets use many- 36 or even 100

• Chi Yuk Chiu and , RD. Murch, 24-Port and 36-Port Antenna Cubes suitable for MIMO Wireless Communications, IEEE Transactions Antennas and Propagation, Vol 56, No 4, pp1170-1176, April 2008

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Cognitive Radio- IEEE 802.22 (WRAN)Cognitive Radio- IEEE 802.22 (WRAN)

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WRANRepeater

TV TransmitterWRAN

Base Station

WirelessMIC

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WirelessMIC

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WRANBase Station

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: CPE집

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: WRAN Base Station

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Typical ~33kmMax. 100km

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Deployment Deployment ScenarioScenario

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Cooperative NetworksCooperative Networks

[GastparVetterli02]

• Cooperation between nodes multi-user encoding and decoding relays may exchange information with

each other in order to coordinate transmission and reduce interference

nOnRn

log~)(

R(n)

tends infinity

n

Cooperation

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What is Next for Wireless What is Next for Wireless Communications?Communications?

   

 

Mobile Computing

Embedded Wireless Devices

Ubiquitous Computing and Access

Multifunction devices and services

Agents and Assistants

Pervasive Communications

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Not like this!Not like this!

Source: L Kleinrock, Realizing the Wireless Internet, Keynote, Lecture, IEEE WCNC, Hong Kong

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Pervasive Pervasive CommunicationsCommunications

• Trillions of mobile wireless devices• Devices ubiquitously embedded in the world

actuators, sensors, memory, processing, speakers, microphones, cameras, displays

• Intelligent software agents deployed To mine data, act on that data, observe trends, and adapt

to their environment• Easy configuration and maintenance• The Internet will become essentially a pervasive

global system What the internet has done for computers, pervasive

communications will do for wireless

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Easy Configuration and MaintenanceEasy Configuration and Maintenance

• Intelligent software agents could be deployed across the network whose function it will be toMine dataAct on that dataObserve trendsCarry out tasks dynamicallyAdapt to their environment

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Pushing the Wireless RevolutionPushing the Wireless Revolution • Revolution in short range wireless communications

WLAN, WiFi, IEEE 802.11a/b/g/n Rates up to 54Mbps IEEE 802.11n using MIMO Approx 250Mbps

Zigbee Bluetooth UltraWideBand

3.1-10.6GHz band IEEE 802.15.3a 480Mbps within 1-10m

RFID Passive UHF- 900MHz

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Convergence Convergence

• Divergence of Physical layers and Applications

Application

Presentation

Session

Transport

Network

Data Link

Physical

Application

Presentation

Session

Transport

Network

Data Link

Physical

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More Breakthroughs Needed…More Breakthroughs Needed…• Aggregate Wireless Capacity Evolution

Fundamentally limited using conventional techniques Cost and Energy Cognitive Radio Cooperative Systems MIMO Efficient protocols Adaptation

• Pervasive Communications Revolution Automatic configuration- self configuring Dynamic processing, prediction and actions- agents Energy conservation Miniaturization

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Wireless EverywhereWireless Everywhere

TomorrowTomorrowTrillionsTrillions of Wireless devices of Wireless devices

VariousVariousInfo/MediaInfo/Media

New MobileNew MobileDevicesDevices

Distributed Distributed EnvironmentalEnvironmental& Bio Sensing& Bio Sensing

Smart RFIDSmart RFID

People to PeoplePeople to People People to machinesPeople to machines Machines to MachinesMachines to Machines

Next Next generation generation phonesphones

Medical Medical applicationsapplications

SecuritySecurity

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Thank You!Thank You!