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Home Gateway for Managing Home Network QoS 2004/6/18 Atsunobu Narita Manager, R&D Dept, NTT Comware Corporation Copyright © NTT COMWARE 2004

Growth of Broadband Internet Access to Home (Japan): 

Growth of Broadband Internet Access to Home (Japan) Broadband Internet Access Subscribers in Japan Growth Rate (%) (Mar 2003 to Mar 2004)

Services and Devices: 

Services and Devices Laundry Electric Meter Water Meter Gas Meter Light Home Gateway Home Server Motion Sensor Rice Cooker Microwave Living Room Kid’s Room Bathroom Kitchen TV/VCR Conditioner Audio PC Game Tel Services for Home WWW TV programs Shopping/Ticket Tel ecom Welfare Service e-Government Medical Care Education Home Security Telemetering Remote Control Refrigerator Bath Health Scale Remote Monitoring Windows Doors Community

Network Services for Home: 

Network Services for Home Work at Home (SOHO, VPN) Communication Services (Tel, FAX, Video Conference, Community, Chat) Contents Delivery (www, TV distribution, music, movie, software download) E-commerce (Shopping, Banking) Home Appliance Control (Air Conditioner, Bath) Entertainment (TV, VCR, Movie, Audio, Game) Education (Distance Learning) Medical (Doctor call, Care for handicapped or elder person) Home Security (Monitoring camera, Motion sensing, Door Lock, Alarm) Telemetering (Electricity, Water, Gas) Remote Control (Control from mobile terminals outside home) Remote Monitoring (Respond to visitor from outside home)

Home Security Example: 

Home Security Example 2F 1F Heat Sensor Gas Sensor Smoke Sensor Blind Door Lock Door Lock Sensor Open/Close window Outside Alarm Unit Security Camera Video Door Phone Monitoring Center Home Gateway Monitor Cellular Ceiling Window

Home Network Environment: 

Home Network Environment TV, VCR, PVR, DVD Radio tuner Audio Player/Recorder Digital Camera Digital Camcorder Video Game PC and Peripherals Phone/FAX Air Conditioner Refrigerator Microwave Bath Controller Gas/Water/Electricity Meter Lighting Security Monitor Motion Sensor Door/Window Lock Video Door Phone Entertainment Security Home Appliances Information Terminals Home Gateway Home Server xDSL Cable FTTH Satellite FWA Phone Cellular Home Access Network Home Network Ethernet Cable Optical Fiber 802.11a/b/g Echonet HomePNA Bluetooth Infrared IEEE1394 USB RS-232C RJ-11 Others Satellite/Terrestrial Radio AM/FM Phone Line Core NW Service Content Provider Cable PSTN

What Quality?: 

What Quality? Bandwidth (Broadband) Video distribution (HDTV, TV Broadcasting) Video communication (Video chat, Video conference) Realtime (Interactive, Two-way communication, No delay) On demand content delivery P2P, Interactive TV Emergency call Auction No Dataloss Emergency call Stability Disaster damage Traffic congestion

QoS Requirements for Future Home Network: 

QoS Requirements for Future Home Network Broadband connection Video communication, such as TV broadcasting, may require 100Mbps or more for access network and 1Gbps for home network? More than best-effort Bandwidth reservation, Guaranteed throughput. Guaranteed response time Interactive services require guaranteed maximum delay. Congestion proof Emergency service should be provided even when congestion occurs. Technology independent Access/home network technologies, such as FTTH, xDSL, Cable, should be flexibly chosen depend on what type of service is provided.

Role of Home Gateway: 

Role of Home Gateway Home Network may simultaneously connected to multiple and heterogeneous access networks. Also home network may be built using multiple technologies. Home Gateway should be able to handle various types of access network technologies and various types of home network technologies simultaneously. Home Gateway have to control both Access network QoS and Home network QoS in order to achieve required condition. Home gateway should ensure access to content independent of the underlying hardware / transport mechanism. Home gateway should be built on flexible platform, and should be easily upgraded.

Home Service QoS : Two Networks: 

Home Service QoS : Two Networks Devices Core NW Home Access Network Access Network QoS Home Network QoS Home Network Home Gateway xDSL Cable FTTH Satellite FWA Phone Cellular Ethernet Cable Optical Fiber 802.11a/b/g Echonet HomePNA Bluetooth Infrared IEEE1394 USB RS-232C RJ-11 Others

Sample Network Configuration: 

Sample Network Configuration Home Gateway RJ-11 FTTH Bandwidth Reserved Bandwidth Bandwidth for Video stream Bandwidth for Phone Bandwidth for Ethernet Ethernet Bandwidth Allocation TV Phone TV (Interactive) PC FTTH Video Cable Video Cable FWA FWA Bandwidth PC Backup for Emergency Home Gateway maps and controls the data flow

ITU-T’s effort for NGN: 

ITU-T’s effort for NGN ITU-T is now heavily emphasizing on work of creating NGN Home Network is considered as an important part of NGN. And Home Gateway is a key CPE which interface NGN functionalities to all of the home devices. Separation of bearer, control and service End-to-end quality Integration of PSTN/ISDN and packet-based network Network Interoperability Mobility/Nomadicity Security etc. General Requirements for NGN:

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NGN Configuration Overview Service Control Transport Communication Server Home GW IP Core

NGN and Home Network : 

NGN and Home Network Transport Layer Home GW Home GW Control Layer Service Layer Access NW Access NW Scope of NGN MG MG MGC MGC Session Control Signalling, QoS Control, Etc. Access NW QoS End-to-end QoS Home Gateway should Control both Access NW QoS and End-to-end QoS

What is Home Gateway for NGN?: 

What is Home Gateway for NGN? Open platform Multiple device support Easy to implement or add flexible and intelligent home gateway functions Easy to support latest technology (ex. QoS) Easy to implement intelligent home server application Easy to upgrade Home Gateway as NGN end-terminal which enables Intelligent QoS Management.

Tradeoffs in Home Gateway: 

Tradeoffs in Home Gateway Cost Performance/ Functionalities Flexibility Stability Easy Deployment Customizability Open standard, and harmonization with NGN will enable better implementation of Home Gateway.

Designing Home Gateway for NGN: 

Example of NGN Home Gateway L-Box (NTT Comware) Open platform, Easy implementation of intelligent functions (Linux based) Multiple device support (support standard multiple ports/slots) Easy deployment (Everything works on memory, Low power consumption) Support for NGN will be considered Designing Home Gateway for NGN L-Box Home Server Monitoring Camera

Conclusion: 

Conclusion ・Future home services require broadband, realtime and interactive connection. And, for some home applications, it will be necessary to guarantee network performance. ・It is expected that many technologies for access network and home network will emerge. So, it will be required that multiple technologies can be flexibly combined for both access network and home network, depend on what kind of home services are used in home. ・Home Gateway is a key device which manage the QoS of Home Network and Services. Common platform for Home Gateway will be required to flexibly combine multiple technologies and to support new QoS management mechanism. ・In the study of NGN in ITU-T, end-to-end QoS through core, access and home network have been recognized as a basic requirement. Home Network is considered as a very important part of NGN, and Home Gateway should fully support NGN functionalities to provide best service to home users.

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