WiMedia UWB WiMedia UWB 기술개발 및 응용사례

WiMedia UWB 기술개발 및
응용사례
July. 17. 2008
허재두
jdhuh@etri.re.kr
Sensor Networking Research Team
Agenda
1. WiMedia UWB Overview
2. WiMedia Status & Roadmap
3. WiMedia UWB Applications
-
Wireless USB
WLP
DLNA
Bluetooth
4. WiMedia UWB Enabling Products
5. Conclusions
Sensor Networking Research Team
2
WiMedia UWB Overview
What is
the WiMedia Alliance?
Sensor Networking Research Team
3
UWB Qualities
UWB is WPAN technology for
Data Rate (Mbps)
1000
UWB
•
•
•
480Mbps @ 2m
Short
200Mbps @ 4m
Distance
Fast download
100
UWB
110Mbps @ 10m
.11n promises
100Mbps @ 100m
Room-range
High-definition
Quality of service,
streaming
10
Quickly
Cost-effectively
With low power consumption
802.11a/b/g/n
Data Networking
Bluetooth
1
1
10
Range (m)
100
Source: Texas Instruments
Sensor Networking Research Team
4
WPAN Comparison
Attribute
WiMedia UWB
WiFi
60 GHz
Range
1-10m
1-70m
<1m to 10m
§ Range too long for WPAN – pro § Low cost products < 1m
ducts will interfere with each § Complex implementations with
multiple trainable antennas >3m
other across the building
Maturity
Mature – Products on
market
Very mature – Millions of
products on Market
Immature - No products on
market
PAN density
High
Low
High
Power Consumption Low
Medium
High
Cost
Low
Low
High
Bandwidth
480 to 1000 Mbps
54 to 600 Mbps
400 to 6000 Mbps
Suitability for
Wireless USB
Yes – already
standardized
No – IP protocol not suitable for
USB devices
No- too expensive, high power,
no protocol defined
Suitability for
PC Docking
Yes
§ True PAN
§ High BW
§ Low Cost
No
§ Too little BW
§ Signal propagates across
building, low user density
TBD
§ Complex radio and antennas
§ High Cost
§ High Power Consumption
Suitability for
Wireless HDMI
Yes
§ High BW
§ Low Cost
TBD
Possible
§ BW adequate with high video
compression
§ Subject to limited density
§ A/V products can tolerate high
power and high cost
§ No compression required
Sensor Networking Research Team
5
UWB Trend
§ 802.15.3a stopped in January 2006
§ Progress had become impossible
§ Project Authorization Request (PAR) expired
§ WiMedia took MB-OFDM PHY, WiMedia MAC,
Not this
MAC-PHY interface to ECMA
§ Ratified as ECMA-368/369
§ On a track to ISO/IEC 26907/26908
§ Ecosystem
§ At least 20 companies working on silicon
§ 6 PHY implementations at last interop event
§ Endorsed by USB-IF, Bluetooth SIG
§ WiMedia has :
§ 9 of top 10 semiconductor companies
§ 7 of 7 major CE companies
§ 3 of top 4 mobile handset companies
This
Sensor Networking Research Team
6
What is the WiMedia Alliance?
§ A global non-profit organization
§ Define and certify a UWB PAN radio
which share with partner SIGs
§ Regulatory engagement
§ Best practices recommendations
§ Standards Development
- Avoid interference with dissimilar radios
- Avoid need for multiple radios to insure connectivity
- Maximize economies of scale
Sensor Networking Research Team
7
WiMedia Common Radio Platform
Multiple
Protocols
&/or
&/or
Proprietary
Implementation
IP
&/or
Network
PAL
PAL
PAL
WiMedia UWB Radio Platform
Common
Platform
MAC & Policies
UWB PHY (MB-OFDM)
PAL: Protocol Adaptation Layer
Sensor Networking Research Team
8
Emerging Applications & Services
§ Eliminate “rat’s nest” wiring
§
PCs and peripherals
§
Home entertainment
§ “Sync and go”
§
Download media content to handheld
devices (movies etc)
§
Kiosk
Upload content to PC / STB (pictures,
calendars etc)
§ Multimedia streaming
§
Playback content from mobile to monitor
or TV
Sensor Networking Research Team9
9
Vision : Creating WPAN Models and Product
이미지를 표시할 수 없습니다 . 컴퓨터 메모리가 부족하여 이미지를 열 수 없거나 이미지가 손상되었습니
다. 컴퓨터를 다시 시작한 후 파일을 다시 여십시오 . 여전히 빨간색 x가 나타나면 이미지를 삭제한 다음
다시 삽입해야 합니다.
Personal
Wireless Storage/Wallet
이미지를 표시할 수 없습니다 . 컴퓨터 메모리가 부족하
여 이미지를 열 수 없거나 이미지가 손상되었습니다 .
컴퓨터를 다시 시작한 후 파일을 다시 여십시오 . 여전
히 빨간색 x가 나타나면 이미지를 삭제한 다음 다시 삽
입해야 합니다 .
Photo Printer
Share video clips
Music & Photos
SHARE and EXCHANGE
Media Center
Photo & Video Clip
Display
이미지를 표시할 수 없습니다 .
컴퓨터 메모리가 부족하여 이
미지를 열 수 없거나 이미지가
손상되었습니다 . 컴퓨터를 다
시 시작한 후 파일을 다시 여십
시오 . 여전히 빨간색 x가 나타
나면 이미지를 삭제한 다음 다
시 삽입해야 합니다 .
In Car Media center
& video
이미지를 표시할 수 없습니다 . 컴퓨터 메모리가 부족하여 이미지를 열 수 없거
나 이미지가 손상되었습니다 . 컴퓨터를 다시 시작한 후 파일을 다시 여십시오 .
여전히 빨간색 x가 나타나면 이미지를 삭제한 다음 다시 삽입해야 합니다 .
Multi Channel
Speakers
Sensor Networking Research Team
10
WiMedia Status & Roadmap
What is the status?
Sensor Networking Research Team11
11
WiMedia Status & Roadmap
Rollout Progress -
Radio Platform
Radio Chips (PHY):
ü 19 chipsets
Platform Products (PHY + MAC):
ü 21 PHY + MAC implementations
Sensor Networking Research Team12
12
WiMedia Status & Roadmap
Rollout Progress Computer products:
ü 12 laptop computers
Consumer products:
ü 49 certified end products
UWB
Radio Platform
Sensor Networking Research Team13
13
Regulation
이미지를 표시할 수 없습니다 . 컴퓨터 메모리가 부족하여 이미지를 열 수 없거나 이미지가 손상되었습니다 . 컴퓨터를 다시 시작한 후 파일을 다시 여십시오 . 여전히 빨간색 x가 나타나면 이미지를 삭제한 다음 다시 삽입해야 합니다 .
Radar
Radar,
WiMax,
Futures
*DAA : Detect And Avoid
128 tones
Band Group #6
WiMedia PHY Specification 1.1
• 53.3-480Mb/s
• Hopping (3 band) and non-hopping
channel codes
• Each band occupies 528 MHz
• PHY signaling
• 128 tone OFDM
• Tone width: 4.125 MHz
• Tone modulation: QPSK/DCM
• Time and frequency spreading
• Forward error correction
Sensor Networking Research Team
14
Regulation – Cont
Cont’’d
이미지를 표시할 수 없습니다 . 컴퓨터 메모리가 부족하여 이미지를 열 수 없거나 이미지가 손상되었습니다 . 컴퓨터를 다시 시작한 후 파일을 다시 여십시오 . 여전히 빨간색 x가 나타나면 이미지를 삭제한 다음 다시 삽입해야 합니다 .
Sensor Networking Research Team
15
Next Steps
§ Overall, the event went well. Exhibitors were happy with quality
of attendees, venue and turnout.
§ 2008 Meetings:
§ June 17 – 19, 2008 – Member Meeting
Westin Stonebriar Hotel, Frisco, Texas
§ October 21-23, 2008 – Member Meeting & Open House
JW Marriott Hotel, Seoul, Korea
§ 2009 Meetings:
§ March – Member Meeting (Seattle, Washington)
§ June – Member Meeting & Open House (Berlin or Dublin)
§ October – Member Meeting (Chicago/Atlanta/Miami)
Sensor Networking Research Team
16
New WiMedia UWB Roadmap
Close 1Gbps CFP
UHS MRD
Close DAA CFP
Close UMR CFP
UMR MRD
UHS
UMR
Seoul F2F
Frisco F2F
4Q11
3Q11
2Q11
1Q11
4Q10
3Q10
2Q10
1Q10
4Q09
3Q09
2Q09
1Q09
4Q08
3Q08
2Q08
1Q08
San Francisco F2F
Marker is at C&I Test Specs Ready, UMR = Ultra-Mobile Release, UHS = Ultra High Speed Release
Sensor Networking Research Team
17
WiMedia Strategy
§ Emerging Applications – Augmented Reality
• Navigation
• IR Aided Person/Animal Avoidance
• RADAR Aided Fog Assistance
Automobile
Console
Sensor Networking Research Team
18
UWB Standards
§ ECMA-368 (ISO/IEC 26907: HR Ultra-Wideband PHY and MAC)
§ Defines PHY and MAC layers for a decentralized, complex system
§ Employs the unlicensed 3.1 to 10.6 GHz UWB spectrum
§ Mandates support of at least 53.3, 106.7 and 200 Mb/s to ensure
a reasonable consumer experience
§ ECMA-369 (ISO/IEC 26908: MAC-PHY Interface for ECMA-368)
§ Defines the ECMA-368 companion interface specification
§ Enables interconnectivity for separate implementations of ECMA368 PHY and MAC layers
Sensor Networking Research Team
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WiMedia UWB Applications
WiMedia UWB 응용
Sensor Networking Research Team
20
Introducing Certified Wireless USB
§ USB is the most successful interface in the PC industry
§ With more than 2.9 billion legacy wired USB connections in the world
§ Soon, these same fast, interoperable connection will
become available in the wireless world
§ Certified Wireless USB from the USB IF
§ WUSB combines the speed and security of wired
technology with the ease-of-use of wireless technology
§ WUSB ensures consumers have an easy, secure way to
connect their home, office and mobile devices without
a cable - without sacrificing speed
Sensor Networking Research Team
21
Wireless USB Background
§ Wireless USB application is based on WiMedia’s UWB
common radio platform
§ Enabling PC peripherals, CE, Mobile devices to connect
using a common interface
§ Up to 480Mbps @ 3meters
§ Created by the Wireless USB Prompter Group
§ Agere Systems, HP, Intel, Microsoft, NEC Electronics, Philips
and Samsung
§ Focused on ensuring backward compatibility,
interoperability, security, and maintaining the guiding
principles of ease-of-use and low cost
Sensor Networking Research Team
22
Benefits of CWUSB
§ Speed
§ 480Mbps @ 3meters, 110Mbps @ 10 meters
§ Power Management
§ Sleep, Listen, Wake and Conserve modes
§ Enable users to use power only when the connection is needed
§ Security
§ Provides optimum data security through built-in protocols and
Authentication procedures
§ Encryption process during transmission
§ Ease-of-use
§ Like traditional USB, WUSB is simple to install and setup
§ With the additional ease that comes with a cable-free environment
§ Backward Compatibility
§ To wired USB devices
Sensor Networking Research Team
23
A Waiting Marketplace
§ Consumer Electronics Segment
§ Eliminates cable nesting for the CE component stack in digital home
§ Delivers easy installation and setup right out of the box
§ Support multiple HDTV streams which is a requirement for CE devices
§ Personal Computing Segment
§ Unwire high data rate USB devices
§ Continuing to enable low cost devices implementations
§ It will also make new usage models like wireless monitors a reality
§ Mobile Segment
§ Wireless docking station
§ Handheld and notebook wireless linkage with resource sharing
§ Wireless AV display from notebooks and handhelds
Sensor Networking Research Team
24
Diverse Range of Product Categories
§ As wireless USB begins to make inroads into the
market segment for wired USB
§ Manufactures could ship hundreds of millions of units within a few
years.
§ Eventually, every PC, camera, printer, camcorder, flat panel
television and mobile phone will have a Wireless USB connection
Sensor Networking Research Team
25
Certified Wireless USB topology
§ Hub-and-spoken connection
relationship
§ Connection model is a wire
replacement
§ Point-to-point connections
§ Between CWUSB Host and
peripheral
§ Certified Wireless USB Cluster
§ CWUSB Host with one or more
peripherals (up to 127)
§ CWUSB Clusters may co-exist
within an overlapping spatial
environment
Sensor Networking Research Team
26
Wireless USB Technical Trend
§ Wireless USB Market Roadmap
Sensor Networking Research Team
27
MS Vision and Industry Roadmap
이미지를 표시할 수 없습니다 . 컴퓨터 메모리가 부족하여 이미지를 열 수 없거나 이미지가 손상되었습니다 . 컴퓨터를 다시 시작한 후 파일을 다시 여십시오 . 여전히 빨간색 x가 나타나면 이미지를 삭제한 다음 다시 삽입해야 합니다.
Sensor Networking Research Team
28
Wireless USB vs. Wired USB 2.0 Throughput
Wireless USB
Maximum UWB PHY rate
Native Host to Native Device
HWA to Native Device
or Native host to DWA
Wired USB 2.0
480
Mbps
~ 320 Mbps
Highly optimized
Solution with optimized drivers
~ 270Mbps
Standard USB solution
~ 200 Mbps
~80 – 120 Mbps
~ 32 - 80 Mbps
HWA to DWA
Max. theoretical throughput
~ 30 - 45 Mbps
~ 20 - 42 Mbps
Flash Drive
(Read)
Flash Drive
(Write)
Source: Tim Higgins, Smallnetbuilder.com
Sensor Networking Research Team
29
Target UseUse-case with Primary Codec
Media
center
Primary
Codec
Game
Primary
Codec
Primary
Codec
Primary
Codec
HDMI
DVD
Primary
Codec
Primary
Codec
HDMI
AV
Receiver
Primary
Codec
STB
Sensor Networking Research Team
30
H264 market Momentum
Systems
H.264
TV
Eur DVB-T HD Available e.g. LG TV at IFA2007, Philips 42PFL9742,
Samsung LA40M81BD…
US ATSC
MPEG2 but H.264 candidate for the future
China
Japan
AVS (close to H.264)
MPEG2 but moving to H.264
STB
IPTV available in H.264
Satellite available in HD
DVD-HD
Available in both Standard HD and Blu-Ray
DVC
Available in Blu-Ray DVC (Hitachi..)
Available in SD DVC (Panasonic…)
DSC
Not considered
PMP
Available: i.e. iPOD
Mobile Phone
Available: i.e. Nokia model
Accessories
Available: i.e. Sony LocationFree
H264 is widely adopted in Consumer systems and will develop further
Sensor Networking Research Team
31
Review: WLP Test Mode Requirements
Components
1. Testing state: device is accepting test commands and providing
test status
2. Means to invoke test state: manual or automatic
3. Semantics of needed test commands and responses
§
§
Put DUT into test case initial conditions
Collect DUT status and reports
4. Test command transports
§
§
§
Devices
WLP network adaptors
Bridges
Sensor Networking Research Team
32
Proposed test configuration: WLP devices
Test System
Device Under Test
UWB test
WLP application &
user interface
Upper Tester
port
WLP PAL
WiMedia MAC(s)
Lower
Tester
(LT)
WiMedia MAC
WiMedia PHY(s)
WiMedia PHY
Additional test and
measurement equipment
Test Data
And Host
controller
operations
UWB WLP radio
Sensor Networking Research Team
33
Proposed test configuration: WLP bridges
Test System
Device Under Test
WLP Bridge
Upper Tester
Bridge
Media
MAC &
PHY
UWB MAC
Lower
Tester
(LT)
WLP PAL
UWB MAC
Bridge
Media
MAC &
PHY
UWB PHY
UWB PHY
Test Data
Additional test &
measurement
equipment
Test data and host controller operations
UWB WLP
Bridge
Bridge media: 802.3, 802.11, WLP
Sensor Networking Research Team
34
Proposed test configuration: WLP adaptors
Test System
Device Under Test
Host controller operations
HW bus or OS
API
Upper Tester
WLP PAL
Lower
Tester
(LT)
WiMedia MAC(s)
WiMedia MAC
WiMedia PHY(s)
WiMedia PHY
Test Data
Additional test and
measurement equipment
UWB WLP radio
Sensor Networking Research Team
35
The DLNA Vision
BROADBAND
Entertainment,
E-Business, Services
MOBILE MULTIMEDIA
Entertainment,
Personal Pictures and Video,
Services
이미지를 표시할 수 없습니다 . 컴퓨터 메모리가 부족하여 이미지를 열 수 없거나 이미지가 손상되었습니다 . 컴퓨터를 다시 시작한 후 파일을 다시 여십시오 . 여전히 빨간색 x가 나타나면 이미지를 삭제한 다
음 다시 삽입해야 합니다 .
이미지를 표시할 수 없습니다 . 컴퓨터 메모리가 부족하여 이미지를 열 수 없거나 이미지가 손상되었습니다 . 컴퓨터를 다시 시작한 후
파일을 다시 여십시오 . 여전히 빨간색 x가 나타나면 이미지를 삭제한 다음 다시 삽입해야 합니다 .
MEDIA
Pre-Recorded Content
Personal Media
Consumers want their
devices
to work
together
Consumers
want
their
and share content
devices to work together
and share content
BROADCAST
Services,
Entertainment
Sensor Networking Research Team
36
Service Scenario
Example:
Use Case: Enjoying AV Content in the
living room
•
Context: relaxing in the living room
alone or with family
•
Equipment: Digital TV, Stereo,
media servers, PCs
Usage Scenarios:
1)
Watching a television program
2)
Viewing digital pictures from the
office computer
3)
Listening to music from a media
server
User is watching TV, wants to view pictures
The devices depicted in these scenarios are for illustrative purposes only
and have no relation to specific products planned by any manufacturer.
Sensor Networking Research Team
37
Bluetooth - UWB
q Bluetooth 3.0 표준
- 저속 Bluetooth 응용 vs. 고속 UWB 응용
è BT-UWB Dual Mode PHY/MAC & Bluetooth 응용 Profile 적용
- UWB는 대용량 데이터 전송 장치로 사용
q 초고속 멀티미디어 전송 BT-UWB 기술
- 고속 UWB PHY/MAC & 고속 영상 스트리밍 Bluetooth Profile 적용
è WiMedia MAC과의 Bluetooth와의 연동을 위한 PAL(Protocol Adaptation Layer)
è VDP(Video Data Profile)을 이용한 응용
- UWB를 초고속 멀티미디어 스트리밍 장치로 사용
BT3.0 Architecture
Sensor Networking Research Team
38
Bluetooth - UWB
q 초고속 멀티미디어 전송 Bluetooth-UWB 기술
- Bluetooth 응용 프로파일을 이용하여 고속전송을 하기 위해 UWB 물리계층 사용
è Bluetooth SIG에서 표준 제정 추진 중
- BT-UWB Protocol Adaptation Layer 개발
è WiMedia MAC과의 Bluetooth와의 연동을 위한 PAL 구현
- VDP(Video Data Profile)을 이용한 응용 기술 개발
è 고속 영상 데이터 전송 Bluetooth Profile 적용
Sensor Networking Research Team
39
WiMedia UWB Enabling Products
Sensor Networking Research Team
40
Device Wire Adapter
§ Looks like a wireless hub
§ Single chip implementation can be integrated directly
into devices
Sensor Networking Research Team
41
Wireless USB Technical Trend
§ Wisair
§ Wireless USB Block Diagram/Applications
Sensor Networking Research Team
42
WUSB Device Wire Platform
WiMedia UWB based WUSB Device Wire Adapter
u
u
u
Features
u
u
u
u
이미지를 표시할 수 없습니다 . 컴퓨터 메모리가 부족하여 이미지를 열 수 없거나 이미지가 손상되었습니다 . 컴퓨터를
다시 시작한 후 파일을 다시 여십시오 . 여전히 빨간색 x가 나타나면 이미지를 삭제한 다음 다시 삽입해야 합니다 .
Bulk
Interrupt
Control
WLP
(Linux/WinCE)
Bulk
TCP/IP
Cable-Based
Association Model
WUSB
Device MAC SDK
USB HUB
UDC D/D
PCMCIA/CF D/D
EHCI/OHCI
Base H/W
To USB
host
SDRAM/
Flash Memory
USB 2.0
USB 2.0
ARM-based
Processor
u
Control
Mass Storage
Native Device
PCMC
IA
u
DWA Device Driver
WA Protocol Engine
WiMedia Device MAC
WiMedia PHY
USB Host/Hub Controller
UWB over Ethernet
Device Wire Adapter
(DWA) Model
USB 2.0
Device
WUSB
Device MAC Controller
u
DWA & WLP S/W
WiMedia
UWB PHY
HW
HUB+
Card
Reader
USB 2.0
USB 2.0
CF/MS/
xD/SD
USB 2.0
WUSB 1.0 Device Protocol
Design for USB Hub, Ethernet, Card reader, IDE : Docking Station..
Legacy Device support : Wireless IPTV
WiMedia UWB MAC/PHY Spec.
Sensor Networking Research Team
43
WUSB Protocol Stack
WUSB Host
WUSB Device
Device Application
GUI
IOCTL
MSG Queue
USB to WUSB
Module Driver
Host Application
IOCTL MSG Queue
IOCTL
MSG Queue
USB Device Driver
IOCTL
MSG Queue
Upper API
WUSB Device Driver
WUSB Device Driver
PIPE
USB Core
Lower API
Kernel
Kernel
IOCTL
MSG Queue
softMAC Emulator
IOCTL
MSG Queue
softMAC Emulator
USB 2.0
USB Host Controller
(EHCI)
USB 2.0
USB Device
TCP Socket
Sensor Networking Research Team
44
Wireless Services
§ Multi-Wireless Hub + Wireless Docking Station
- Wireless hubs and SDIO, CF, IDE MS… Interfaces
§ WiMedia UWB based Certified WUSB protocol compatibility
§ Patents
USB2.0
USB 2.0
이미지를 표시할 수 없습니다 . 컴퓨터 메모리가 부족하여 이
미지를 열 수 없거나 이미지가 손상되었습니다 . 컴퓨터를 다
시 시작한 후 파일을 다시 여십시오 . 여전히 빨간색 x 가 나타
나면 이미지를 삭제한 다음 다시 삽입해야 합니다 .
이미지를 표시할 수 없습니다 . 컴퓨터 메모리가 부족하여 이미지를 열 수 없거나 이미지가 손
상되었습니다 . 컴퓨터를 다시 시작한 후 파일을 다시 여십시오 . 여전히 빨간색 x가 나타나면
이미지를 삭제한 다음 다시 삽입해야 합니다 .
UWB
Host
Wire
Adapter
(HWA)
USB2.0
Device
Wire
Adapter
(DWA)
Sensor Networking Research Team
45
Use Cases From DIP
§ DIP Requirements
§
§
§
§
§
§
§
§
Use Case
Use Case
Use Case
Use Case
Use Case
Use Case
Use Case
Use Case
Display
PC Cam
1 : Entertainment
2 : Public Space
3 : Home Office
4 : House-Wide Network (backbone)
5 : Car Environment
6 : Conference Board Room
7 : Mobile Phone
8 : Office Environment
Keyboard
Storage
Speakers
PC, Laptop,
or Webpad
Scanner
Digital Camera
PDA
MP3 player
Camcorder
Photo Printer
Home Area Network
& Internet connection
Sensor Networking Research Team
46
Wireless Services
§ Useful Service Scenarios
q Wireless Photo Printing
q Wireless Presentation
이미지를 표시할 수 없습니다 . 컴퓨터 메모리가 부족하여 이미지를 열 수 없거나
이미지가 손상되었습니다 . 컴퓨터를 다시 시작한 후 파일을 다시 여십시오 . 여전
히 빨간색 x 가 나타나면 이미지를 삭제한 다음 다시 삽입해야 합니다 .
이미지를 표시할 수 없습니다 . 컴퓨터 메모리가 부족하여 이미지를
열 수 없거나 이미지가 손상되었습니다 . 컴퓨터를 다시 시작한 후 파
일을 다시 여십시오 . 여전히 빨간색 x가 나타나면 이미지를 삭제한 다
음 다시 삽입해야 합니다.
이미지를 표시할 수 없습니다 . 컴퓨터 메모리가 부족하여 이미지를 열 수 없거나
이미지가 손상되었습니다 . 컴퓨터를 다시 시작한 후 파일을 다시 여십시오 . 여전
히 빨간색 x 가 나타나면 이미지를 삭제한 다음 다시 삽입해야 합니다 .
이미지를 표시할 수 없습니다 . 컴퓨터 메모리가 부족하여 이미
지를 열 수 없거나 이미지가 손상되었습니다 . 컴퓨터를 다시 시
작한 후 파일을 다시 여십시오 . 여전히 빨간색 x가 나타나면 이
미지를 삭제한 다음 다시 삽입해야 합니다 .
이미지를 표시할 수 없습니다 . 컴퓨터 메모리가 부족하여
이미지를 열 수 없거나 이미지가 손상되었습니다 . 컴퓨터를
다시 시작한 후 파일을 다시 여십시오 . 여전히 빨간색 x가
나타나면 이미지를 삭제한 다음 다시 삽입해야 합니다 .
UWB based Wireless Services
이미지를 표시할 수 없습니다 . 컴퓨터 메모리가 부족하여 이미지를 열 수 없거나 이미지가 손상되
었습니다 . 컴퓨터를 다시 시작한 후 파일을 다시 여십시오 . 여전히 빨간색 x 가 나타나면 이미지를
삭제한 다음 다시 삽입해야 합니다 .
이미지를 표시할 수 없습니다 . 컴퓨터 메모리가 부족하여 이미지를 열 수 없거나 이미
지가 손상되었습니다 . 컴퓨터를 다시 시작한 후 파일을 다시 여십시오 . 여전히 빨간색 x
가 나타나면 이미지를 삭제한 다음 다시 삽입해야 합니다 .
이미지를 표시할 수 없습니다 . 컴퓨터 메모리가 부족하여 이미지를 열 수
없거나 이미지가 손상되었습니다 . 컴퓨터를 다시 시작한 후 파일을 다시
여십시오 . 여전히 빨간색 x가 나타나면 이미지를 삭제한 다음 다시 삽입
해야 합니다 .
Internet
q Wireless Contents Sharing
이미지를 표시할 수 없습니다 . 컴퓨터 메모리가 부족하여 이미지를 열 수
없거나 이미지가 손상되었습니다 . 컴퓨터를 다시 시작한 후 파일을 다시
여십시오 . 여전히 빨간색 x가 나타나면 이미지를 삭제한 다음 다시 삽입
해야 합니다 .
q Wireless IPTV
Sensor Networking Research Team
47
CES 2008
Sensor Networking Research Team
48
Conclusions
§ WiMedia UWB : WPAN 응용
§ Wireless USB
§ WLP
§ DLNA
§ Bluetooth …
§ Many Applications
§ HWA
§ DWA : Hub, Docking Station
§ CF or SDIO with WUSB
§ Problems !!!
§ Chip Delivery
§ Device Driver Supporting
§ Killer Application?
Sensor Networking Research Team
49
Q&A
Sensor Networking Research Team
50
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