695410108 李偉銘 695410132 洪貫倫 1. home network architecture home gateway architecture ...
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Home network architecture
Home gateway architecture
Datalink medium
Service-oriented home network
Daily application
Recent develop
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Appliances can be monitored and controlled through a network
Network services are available
Home network has a gateway device connected to public network
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Connect various home/access network by gateway
Home gateway includes the IP processing capability
Proxy server function enables accessing services on one network from another
Define auto-configuration method on the home gateway
The gateway supports necessary media translation function
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Interoperability among different networks/protocols
Automatic coordination of service elements
Connectivity to wide area networks
Authentication/authorization for wide area connectivity
Concealing home network information
Support for multimedia session control
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7
Homebackbon
e
Homeautomatio
n
Wirelesshomene
t
Set Top Box
TVWireless
GW
Homegateway
PC Printer
IEEE1394
Ethernet
CATV
PSTN/ISDN
Internet
User interface to the user access from the public network
Firewall function
Remote control function
Address translation and protocol translation functions
Home router and communication server function
Media translation functions
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9
Public network(Teleco / Internet) GUI for
Public Net
Firewall
ProtocolTranslation
RemoteControl
AutoConfigurati
on
MediaTranscodin
g
IEEE1394
HomeAutomation
Home Gateway
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HardwareHardware
Operation System (ex. Embedded Linux)
Operation System (ex. Embedded Linux)
Java Virtual MachineJava Virtual Machine
OSGi FrameworkOSGi Framework
EthernetEthernet Power linePower line WLANWLAN
Services
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Non-SIPappliance
SIP UA(telephone)
PublicSIP server
SIP UA(peer)
Resource manager
Resource repository
Devicecontroller
Service manager
Service
SIP manager
UA UA
RTP gateway
Home gatewayHomenetwork
Wide-areanetwork
RTPRTP RTP
SIP
SIP
Real-time video transcoding function
Session redirection without notification
Media separation/gathering
Flexible multimedia session handling
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Type Event Bandwidth
Data network PC data 10~100 Mbps
Multimedia network
Audio CD 12 Mbps
Digital TV 36~38 Mbps
Voice over IP 6~7 Mbps
Network-capable PVR 11~12 Mbps
Network-capable DVD 7~9 Mbps
Download to home server via Internet 10~100 Mbps
DV transmit to TV via wireless 26~27 Mbps
Control network 10 household & 20 other purpose appliance
300K~2 Mbps
Total 120~300 Mbps
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Type Wire Speed Length
HomePNA telephone line1 Mbps (v1.0)2 Mbps (v2.0)
150 m (v1.0)300 m (v2.0)
HomePlug power line 14 Mbps > 100 m
Cable Modem
co-ax cable for TV 10 Mbps 100~200 m
IEEE1394UTP , co-ax , Fiber
100,10 Mbps,3.2 Gbps
4.5~100 m
Ethernet UTP , telephone line , Fiber100, 2 Mbps10 Gbps
100~500 m
USB STP12 Mbps (v1.1)480 Mbps (v2.0)
5 m
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Type Band Speed Distance
HomeRF 2.4 G 10 Mbps 50 m
WiFi 2.4 G 54 Mbps 100 m
Bluetooth 2.4 G 1 Mbps 10 m
802.11a 5 G 54 Mbps 10~100 m
802.11b 2.4 G 11 Mbps 100~300 m
802.11g 2.4 G 54 Mbps 100~300 m
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We look at home networking from a service-oriented point of view
We first identify the services required in each room of a home and then determine the ultimate end-equipment needed
We envision that future homes will be very simple without many “electronic boxes” as of today
The focus of future home networking will be on the distribution of needed services to the ultimate end-equipment via a simple, yet smart, flexible and reliable, home network
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Currently, each service listed in Table 2 is accomplished by an “electronic box”, e.g., DVD players, VCR, radio etc. Some of these electronic boxes have duplicate functionalities
In the near future, with the immersion of all-digital media, the end-equipment will be very simple
Compared to homes nowadays, future homes will be very simplistic and only carry essential end-equipment such as universal displays, speakers, microphones and/or some additional input/output devices
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That is simple and reliable, is to use a semi-decentralized architecture as shown in next page
The brain of the home network is the home media server. It not only stores all digital media information of the home but also provides access to external networks
These room-servers are connected together via an inter-room network and are synchronized with the home media server periodically
“Room services” in a particular room are provided by its corresponding “room-server”
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Currently, there are different kinds of technologies available, e.g., coaxial cable, plastic optical fiber (pof:100/1000Mbps), power line, phone line, and wireless (IR and RF)
The selection of medium depends highly on whether it is intra-room or inter-room connection
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For inter-room connection between “room-servers”, one may have to drill holes and snake cables/fiber through walls
Current best wireless solution is IEEE 802.11a/b/g which provides up to 54Mbps
However, with the upcoming high-throughput IEEE 802.11n WLAN standard, wireless connection of more than 100Mbps at 30m is feasible
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802.11n
802.11n
802.11n
Follow MeParty Mode
Back-upShare files
Home Plug AV
Home Plug AV
Home Plug AVHome Plug AV
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For intra-room connection, one can use cable and/or pof in order to provide reliable and high bandwidth services.
Fortunately, with the advancement in wireless technologies, we can provide high-rate wireless intra-room connections using the upcoming IEEE 802.15.3a ultra-wideband (UWB) solution which can provide 110Mbps at 10m or 480Mbps at 4m.
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VCR RecorderHD DVD Recorder
Game
DVD PlayerVCD PlayerLCD TVHome PC
DVD RecorderHD DVD PlayerDigital TVSTB
Unit : 10000
0
3,000
6,000
9,000
12,000
2002 2003 2004 2005 2006 2007 2008
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VideoVideoBravia Internet
Video LinkBravia Internet
Video Link
Online VideoOnline Video
Apple TVApple TV
Mobile TVMobile TVFull HD PDP TVFull HD PDP TV
IPTVIPTV
Home NetworkingHome Networking
BD & HD-DVDBD & HD-DVD
Intel Viiv & AMD Live
Intel Viiv & AMD Live
Full HD LCD TVFull HD LCD TV
iPhoneiPhone
HD CamcorderHD Camcorder
PC-to-TVPC-to-TV
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