GCC%202007

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Wireless Networks and Services 10 Years Down the
Road      Ross Murch Professor, Electronic and
Computer Engineering Director, Centre for
Wireless Information Technology
The Hong Kong University of Science and Technology
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Wireless Revolution
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Wireless Everywhere
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Challenges
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What is Next for Wireless 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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Increasing Capacity

• What can we do?

Increase Power Cooperative systems
Increase Bandwidth Cognitive Radio
More Channels MIMO
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MIMO- 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)
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Cooperative Networks

• Cooperation between nodes
• multi-user encoding and decoding
• relays may exchange information with each other
  in order to coordinate transmission and reduce
  interference

GastparVetterli02
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What is Next for Wireless 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!

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

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Pervasive Communications

• 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 Maintenance

• Intelligent software agents could be deployed
  across the network whose function it will be to
• Mine data
• Act on that data
• Observe trends
• Carry out tasks dynamically
• Adapt to their environment

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Pushing 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

• Divergence of Physical layers and Applications

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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 Everywhere
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Thank You!