????? ???? UWB

1
????? ???? UWB
2002. 11. 15 UWB ?????
2
I. ????? ???? ??
3
????? ??????

• ?????(Ubiquitous)? ????? ??? ??? ?? ???? ???
  ????? ?? ???? ??? ???? ?? ????? ???? ?? ?? ? ???
  ??? ?? ????? ??? ??? ??? ??
• ?? Xerox? PARC(Palo Alto Research Center)? Mark
  Weiser? ????? ???? ??? ?? ??? ?? ?? ???? ??????
  ???? ?? ???? ????? ??? ???? ???? ??????? ??? ???
  ??? ?? ? ?? ???? ??
• IBM?? ?????(Pervasive) ????? ??? ??

4
????? ???? ????

• Mark Weiser? ????? ???? ???? ????
  ???(visibility), ???(complexity),
  ???(abstraction), ???(connection),
  ????(invisibilty)? ?? ??? ????? ??
• ????? ??? ??? ??? ??? ???(???)
• ????? ??? ??? ???? ??? ??? ??(???)
• ??? ????? ???? ??????????? ???(???)
• ????? ????? ?????????? ??? ?? ? ???? ??(???)
• ????? ??? ?????? ??(????).

5
????? ???? ????

• IBM?? ?? 4?? ?????
• ???(Decentralization) ??? ?? ??? ??? ???
• ???(Diversification) ?? ??? ?? ?? ?? ?????
• ?? ???? ?? ? ???? ??? ???
• ???(Connectivity) IT ??? ?? ?? ??? ??? ???
• ???(Simplicity) ??? ??? ??? ??? ????? ??
• ???

6
????? ???? ????

• Devices information access devices (handheld PC,
  smart phones), identification devices (smart
  labels, smart cards), embedded controls (sensors)
• Software Java, OS (Palm OS, Windowes CE),
  middleware (JavaPhone APIs, OpenCard Framework),
  security
• Networks Internet protocoles (HTTP, XML, WAP)
  communications (Bluetooth, Cellular), service
  discovery (Jini, uPnP)
• Back-end Sever Infrastructures gateways,
  application servers
• New Services (Business Models) u-Commerce
  (Silent Commerce)

7
????? ????
??? ?? ? ???? ????? ? ?????? ??? ???? ? ?? ???? ??
?????? ????? ??? ??? ? ???, ??? ?? ??? ? ???? ??
???? ??? ???? ???? ???? ???? ?? ? ??
????? ???? ???
??? ???? ??? ?? ??? ? ?? ???? ?? ??? ?? ??? ??
??? ??? ??? ?? ? ? ?? ????? ??? ?? ? ??
??? ??? ??? ???? ???? ??? ?? ??? ??? ? ???,
OS/???? ???? ?? ? ??
??? ???? ?? ???? ?? ??? ????? ???? ??? ?? ????
??? ??
8
II. ????? ??????? UWB
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Wireless Microsensor Networks(WMNs)

• ?? ????? ?? ???? WMNs? ????? ???? ??, ???, ?? ??
• ??? ???? ?? ???, ???? ????, ?? ????, ????? ??/??
  ?? ? ????
• ????, ??? ?????, ????? ? ? ????? ????

10
WMNs? ??? ??(1)

• ??? ?? MEMS (MicroElectroMechinicalSystem) ????
• 
  
  

• UCLA?? ??? MEMS ?????
• 
  
  1?? ????? ??? ???
• 
  
  ?? 30 ?? ??? ??? ???
• 
  
  ???? ?? ? ? ??.

11
WMNs? ??? ??(2)

• ? ?? ??(???? lt 100 µW) ?? HW/SW? ??? ???

Cache
Dedicated HW
InterfaceController
FPGA
FPGA
EmbeddeduP
Memory Controller
Memory
Silicon Backplane

• UC ??? ??? PicoRadio
• Sub-sampling RF
• Direct Conversion
• Reconfigurable software
• radio

Parameterizable DataPaths
Dedicated DataPath
PowerAmplifier
D/A
12
WMNs? ??? ??(3)

• ????? ???? ?? ????(Multihop) ???? ??? ?? ?? ???
  ??? ??? ??? ???(??n, n25)?
• ????? ??? ??, ??? ? ?? ????? ??????? ?? ?? ???
  ???? ????? ??
• 
  
  

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WMNs? ??? ??(4)

• ?? ???? ?? ???? ? ???? ??? ??
• -PSPP(Public Safety Partnership Project)
  MESA(Mobility for Emergency Safety Application)
  project
• 
  
  

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WMNs? ??? ??(5)

• ?????? ??/???? ??? ????(lt 1m)
• 
  
  

?????? ?? ?? ?? ?? RFID ??? ?? ?? ???? ???? ???
?? ??? ? ????? ??? ?? ???? ??? ????? ??? ????
???? ?? ?? The Internet of Things
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UWB, WMNs? ?????(1)

• UWB ??? ?????
• 1. ???? ???? All CMOS single chip integrated
  with MEMs
• 
  
  

Aetherwire Location Inc.
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UWB, WMNs? ?????(2)
2. RF ???? ??? ?? ????? ??? ??? ?? UC Berkeleys
Wireless Research Center? ??
Block Duty Cycle Power (Always On) Power (Per Period)
Low Noise Amp Twin/Trep 600mW 60mW
Variable Gain Amp Twin/Trep 1.8mW 180mW
Sample/Hold 100 1mW 1mW
A/D Converter 100 100mW 100mW
Oscillator 100 100mW 100mW
Sampling Clock Gen 100 400mW 400mW
TX Pulse Generation 2ns/Trep 10mW 100mW
Digital Logic 100 60mW 60mW
Total Power Per Period Total Power Per Period Total Power Per Period 1001mW
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UWB, WMNs? ?????(3)
3. ?? ?? ???? ??? ?? ?? ??? No deep fading
nulls-reduced pass loss(??n n2, ?????? n4) -
?? ?? ??(?? pico S)? ???? ??? ???? ???? ?? ?? ???
??? ?? ? ??? ?? ??? ? ??.
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UWB, WMNs? ?????(4)

• 4. Operation within/through buildings, urban
  areas, forests
• FCC part15 subpart F, Imaging system operation
• GPR ??? ??? ???? ?? ??? ?? ?? ???? ??, 960 MHz
  ?? ?? 3.1 10.6 GHz
• Through-wall Imaging system ? ?? ?? ? ???? ??
  ??? ??, 960 MHz ?? ?? 3.110.6 GHz
• Wall imaging system ? ?? ?? ??, ???? ??? ??? ??,
  960 MHz ?? ?? 3.110.6 GHz
• ?? ??? ?? ?? ??? ??? ???? ???? ?? radar system,
  1.9910.6 GHz
• ??? ?? ??? ?? ?? ??? ?? ? ??? ??, 3.110.6 GHz

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UWB, WMNs? ?????(5)
5. ??? ??? ?? ?? Multispectral Solutions ?? TDOA
(Time Difference of Arrival) ??

• ?? ??
• 76 - 91 m (commercial building)
• gt600 m (outdoors, line-of-sight)
• ???
• 15 91 cm (indoors)
• lt15 cm (outdoors)

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UWB, WMNs? ?????(6)
6. ?? ?? ??? 100 Mbps in commercial market
(Xtreme Spectrum, Time Domain), target up to 500
Mbps
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UWB, WMNs? ?????
??? Yes! ?? ?? ???? ??? ??? ?? ?? - ???,
Bluetooth? ??? ??