The Common-Interface-Based Residential Gateway(CIB-RG)

Pusik Park, KiTaeg Lim, KwangHo Choi

SoC Research CenterKorea Electronics Technology Institute

Email: {parksik, limkt, khchoi}@keti.re.kr

Introduction

The Residential Gateway(RG) is at the heart of Home-area Networking Solution

Current Industry Status Closed and Fixed architecture Support only a few interfaces Zero-Compatibility and Hard Expandability due to Non-standardization.

Standards for Residential Gateway TIA’s TR-41.5 committee has attempted ISO/IEC JTC 1/SC 25 developed the first specification of HomeGate in

October 1998

Benefits of RG’s Standardization Reduced development and maintenance costs by using open architecture Unlimited support of a lot of interfaces

HomeGate of ISO/IEC JTC 1/SC 25 WG1

GIGIP

Interface

SpecificLAN

Interface

GI

GI

SpecificWAN

Interface

GIPInterface

SpecificWAN

Interface

GIPInterface

GI

GI GIP

Processing&

ProtocolConversion

LGI

GIPInterface

SpecificLAN

Interface

Processing&

ProtocolConversion

GIPInterface

SpecificLAN

Interface

Processing&

ProtocolConversion

Processing&

ProtocolConversion

Processing&

ProtocolConversion

LGI

LGI

WGI

WGI

GI

The Scope of the Residential Gateway Standardization

Choice of Common Interfaces

Physical layer PCMCIA interface Thin, Small, Lightweight A Neat Appearance without a Projection after card insertion

Network & Transfer layer Ethernet & TCP/IP protocol suite The best popular protocol deployed widely Easy Implementation and Maintenance Seamless Convergence with the broadband internet

Middleware Embedded Linux Universal Plug and Play Simple, Easy implementation Supporting the Bridge for a difference middleware

The Common Middleware, UPnP

IP

UDP

HTTPMU (multicast)

GENA SSDP HTTPU(unicast) SSDP

TCP

HTTP

SOAP

HTTP GENA

UPnP Device Architecture

UPnP Forum

UPnP Vendor

Control

DiscovertyAdvertisement

DiscoverySearch

response

DiscoverySearchrequest

Description

Event

Presentation

The Common Protocol Stack

Link Controller

Radio

Link Manager

HCI

L2CAP

SDPRFCOMM

PPP

IP

Bluetooth LGI

WLAN MAC

WLAN PHY

IP

WLAN LGI

GIP

GIP

IP

GIP

LonWorks LGI

IP

GIPxDSL

xDSL WGI

PPP

IP

GIPDOCSIS

DOCSIS WGI

PPP

LonTalk

LonWorks-UPnP Bridge

GIP

The Open Hardware Architecture

Blockdiagram of a GIP Processing Box Blockdiagram of a LGI/WGI

PCMCIAMaster

PCMCIAMaster

APBBridge

ARMCore

ASB

APB

Slot#1

Slot#2

Slot#3

Slot#4

UART

Ethernet

PCMCIASlave

APB-ISABridge

APBBridge

ARMCore

ASB

APB

Slot

UART

EthernetProtocol

Conversion

LAN/WANSpecificInterface

Local Operation

(3) Receive the action, “TURN ON”(4) Turn on the light.(5) Send the response, “OK”

(1) Found a LIGHTING device(2) Send the action, “TURN ON”(6) Receive the response, “OK”(7) Lighting status change “ON”

(0) All LGIs and a WGI advertise themselves as soon as “Power On”.

GIPB/D

Home Control Network

WLAN link

DSL link

PC(UPnP Control Point)

DSL WGI

LonWork LGI

WLAN LGI

Internet

TabletPC+ WLAN

ISP Server

Broadband Operation

(5) Receive the action, “Turn ON”(6) Send the response, “OK”

(1) Browse the My Home Page.(2) Select a device and click it(3) Show the Main Page for controlling the light(4) Click the button for turning on the light(7) Confirm status of the light

GIPB/D

Home Control Network

WLAN link

DSL link

PC(UPnP Control Point)

DSL WGI

LonWork LGI

WLAN LGI

Internet

TabletPC+ WLAN

ISP Server

(0) The GIP system collects information which LGIs and WGIs exist and builds the My Home Page

Demonstration

TabletPC with WLAN(running UPnP Control Point,Connecting the WLAN LGI)

Left: LonWorks HomeAutomation TestbedRight: The set of the CIB-RG.

Conclusion

Current closed RG platform has a lot of problems, hard upgrade, poor compatibility and so on

RG’s standardization activity is in progress but not active We proposed the Common-Interface-Based Residential

Gateway (GIB-RG) which defines the open hardware architecture, the common transfer protocols and middlewares

We demonstrated the CIB-RG system with WLAN LGI, LonWorks LGI and ADSL WGI

The common RG architecture has an advantage of easy implementation, maintenance and good compatibility.