Disclosed herein is a Residential Gateway (RG) system for home network service. The RG system receives various supplementary services through a Home Network Serving Node (HNSN) that provides home network service. The system includes an Open Service Gateway initiative (OSGi) framework, an RG agent, a virtual Universal Plug and Play (UPnP) device, and a Java virtual machine. The RG agent is installed on the OSGi framework and implemented in bundle form. The UPnP device is registered on the OSGi framework by the RG agent. The Java virtual machine is ported by the RG agent to hardware on which an operating system is installed.

TECHNICAL FIELD

The present invention relates, in general, to a residential gateway system for home network service and, more particularly, to a residential gateway system for providing home network service on the basis of Open Service Gateway initiative and Universal Plug and Play.

BACKGROUND ART

Currently, various types of home networking middleware, intelligent information appliances, and residential gateways based on various wired-wireless network technologies in a home networking market, and various development environments exist due to different hardware platforms, Operating Systems (OSs) and network protocols.

Home networking middleware, such as Java Intelligent Network Infra-structure (JINI), Home Wide Web (HWW), Home Audio Video interoperability (HAVi), or Universal Plug and Play (UPnP), has purposes of communication and control between intelligent information appliances, and a Residential Gateway (RG) operates as a gateway that dynamically transfers services, which are separately provided by various service providers, to a home network.

In these environments, efforts are being made to make use of a dynamic service management function in conjunction with a control function for intelligent information appliances through home networking middleware, and a representative example, as shown in?FIG. 1, is the interoperable model of Open Service Gateway initiative (OSGi)-based home networking middleware. That is, it is desired to provide a integration type model for the two functions by developing a service bundle for home networking and installing it on an OSGi framework.

OSGi aims to integrate various network standards and technologies for internal networks and external networks, like a single system, by defining a standard for dynamic service management through Application Program Interfaces (APIs) having consistent form, and providing a framework that is a java-based platform-independent service environment.

When the various network standards and technologies of OSGi-based internal and external networks are combined like a single system, a demand for a RG standard may increase. However, sufficient standardization work for the RG has not been performed.

Meanwhile, control devices, which are capable of integrally managing devices (home appliances) that use various communication protocols and are dispersed in home, are also being developed. That is, home network control devices, which are capable of supporting all communication protocols, such as International Electrical and Electronics Engineering (IEEE) 1394, Universal Serial Bus (USB), Infrared Data Association (IrDA), X-10, and Lonworks, are being developed.

DISCLOSURE OF INVENTION

• Technical Problem

However, the standardization of the interoperable protocol for a Home Network Serving Node (hereinafter referred to as an ‘HNSN‘), which functions as a central server provided for home networking and home automation, and RGs installed in homes, have not been conducted.

• Technical Solution

Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a RG system, which is capable of integrally managing, controlling, and monitoring all devices connected to an OSGi and UPnP-based home network.

• Advantageous Effects

The present invention has the following effects:

First, all devices, which are connected to a home network through an OSGi-based residential gateway, can be integrally managed, and detailed information about these devices can be acquired.

Second, a standard for an OSGi-based RG is presented, so that various high-quality home network services can be provided and, at the same time, the extension of devices and services can be facilitated.

Third, a UPnP-based RG system can be established, so that devices in the home network can be controlled from outside the home network and remotely monitored and controlled using only a browser.

BEST MODE FOR CARRYING OUT THE INVENTION

The present invention provides a Residential Gateway (RG) system for home network service, the system receiving various supplementary services through a Home Network Serving Node (HNSN) that provides home network service, the system including an OSGi framework; an RG agent installed on the OSGi framework, and implemented in bundle form; a virtual UPnP device registered on the OSGi framework by the RG agent; and a java virtual machine ported by the RG agent on hardware on which an operating system is installed.

In addition, the present invention provides an RG system for home network service, including an OSGi framework; an RG agent installed on the OSGi framework, and implemented in bundle form; and UPnP device service registered on the OSGi framework by the RG agent.

In addition, the present invention provides a UPnP-based RG system for home network service, the RG system including an HNSN connected to a mobile network to control devices and transfer control statuses of the devices, and a home gateway connected to the HNSN through a network and connected to the devices, wherein the home gateway comprises a Web server and a UPnP proxy that detect devices connected and disconnected to and from the home gateway, and create a device list Web document, receive a remote control signal, which is generated by a user, from the HNSN and perform control, transmit a response message regarding the control, and monitor event generation by the devices.

Mode for the Invention

The construction and operation of an embodiment of the present invention are described in detail with reference to the accompanying drawings below.

FIG. 2?is a diagram showing the construction of a network system to which the RG of the present invention is applied. As shown in?FIG. 2, the network system, to which the RG is applied, includes an HNSN?10?that provides home network service, and an RG?30?and local networks?40?a?and?40?b?that constitute a home network?20.

The HNSN?10?operates in conjunction with Personal Computers (PCs), or SK-Virtual Machine (VM) or Wireless Application Protocol (WAP) mobile phone terminals connected to a network from which home network service can be received, and functions as a central server for providing the home network service.

The RG?30?is connected to the HNSN?10?through the network or the Internet to receive various supplementary services. In particular, the RG?30?performs functions, such as the control and monitoring of home devices, the updating and rebooting of RG SoftWare (S/W), and the control of gateway home network device using the Web service of a registration gateway, and the setting of a network.

The local network?20?may be constructed from, for example, a UPnP network?40a?and a Recommended Standard (RS)-485 control network?40?b?that is a kind of Power Line Communication (PLC), and is connected to different types of home network devices (UPnP cameras, PCs, Web PADs, illumination devices, crime prevention devices, and the like) to share information or control various functions.

The HNSN?10?and the RG?30, as described later, perform communication using HNSN-RG protocols.

FIG. 3?is a diagram showing the software architecture of the OSGi-based RG of the present invention. As shown in?FIG. 3, the internal software of the RG?30?includes an OS?32?on RG hardware?31, a java virtual machine?33, an OSGi framework?34, a virtual UPnP device?35, an RG agent?36, a graphic interface for supporting a Hydrologic Modeling System (HMS) a User Interface (UI)?37, and an Operation, Administration and Maintenance (OAM)?38?for undertaking network setting, the main functions of which are described below.

Linux version 2.4.18 is used for the OS?32, cvm 1.0.1, which satisfies J2ME/CDC, that is, the java virtual machine of Sun Co., is used for the java virtual machine?33, and the 4DAgent? of 4DHomeNet is used for the OSGi framework?34.

Instead of a UPnP bundle, the virtual UPnP device?35?performs a UPnP protocol on the local network, like an actual UPnP device.

The RG agent?36, which is an agent that operates in conjunction with the HNSN?10, is a bundle that uses the OSGi framework?34.

The HMS UI?37?is a bundle that supports a graphic interface, and the OAM?38?is a kind of network management bundle that undertakes the operation, management and maintenance of a network.

FIG. 4?is a diagram showing the interface structure of the OSGi-based RG of the present invention. As shown in?FIG. 4, interfaces between the RG, devices connected to the RG, and users may be defined below.

The devices, such as PCs or Web PADs, and UPnP devices, which are connected to the RG?30, operate in conjunction with HNSN?10?though an RG-H interface, and the RG?30?provides functions, such as the registration and authentification of the RG?30, periodic RG keep-alive message transfer, the controlling and monitoring of devices connected to the RG?30, the rebooting of the RG?30, and the updating of bundles.

Furthermore, the RG?30?is connected with the home devices through RG-D0?and RG-D1?interfaces.

The RG-D0?interface, which is an interface for network devices connected to the home IP network of the RG?30, supports standard UPnP.

The RG-D1?interface is collectively connected to RS-485 devices by a Control-box (C-box) connected with the RS-485 devices, and is connected to the RG?30?through an RS-232 interface. The interface between the C-box and the RG is the RG-D1.

An RG-U interface, which is UI that allows a user to directly control the home devices of Web PADs in home and the like, is an interface that provides general Web service.

An RG-O interface and an RG-J interface are the internal interfaces of the RG. The RG-J interface is an API that enables the java virtual machine?33?to be ported to the hardware?31?on which the OS?32?is installed, and the RG-O interface, which is an API between the OSGi framework?34?and the bundles?36,?37?and?38, provides an API that satisfies the standard of OSGi R3?and also provides an API for a service provider or preparing a virtual device.

The interfaces are classified in the following Table 1.

Meanwhile, the RG-HNSN interface is a protocol between the RG?30?and the HNSN?10.

The RG-HNSN interface is a protocol in which an RG registration and authentification function and a keep-alive function for RG management, are added to a UPnP protocol having discovery, description, control, and event functions for devices in an IP-based home network, and are then applied to a Wide Area Network (WAN).

The RG-HNSN interface has the following functions:

1) RG registration/authentification and keep-alive functions

2) Device discovery function

3) Device Description function

4) Device query and control function

5) Device event function

6) RG device remote rebooting function

7) RG S/W remote update function

8) Remote control function for the network port forwarding of the RG

The RG-HNSN protocol having the functions is summarized in the following Table 2.

Detailed descriptions of Table 2 follow an RG-HNSN interface standard.

An RG-side agent responsible for communication between the HNSN?10?and the RG?30?is the RG agent?36. The RG agent36?operates on an OSGi framework because it is implemented as an OSGi bundle. Furthermore, since the HNSN?10?and the RG agent?36?perform communication through protocols, such as a Simple Service Discovery Protocol (SSDP), a Hypertext Transfer Protocol (HTTP), a Simple Object Access Protocol (SOAP), and a General Event Notification Architecture (GENA), the RG agent?36?implements the respective protocols.

The RG agent?36?performs an RG agent function and a device proxy function.

RG Agent Function

The RG agent?36?acts as a connection link between the RG?30?and the HNSN?10, registers the RG?30?or periodically transmits an RG heart beat, and informs the termination of the RG connection at the time of completion. Furthermore, the RG agent?36?manages a list of devices that are currently connected to the RG?30, and allows the list to be transferred when the HNSN request it. Furthermore, the RG agent?36?transmits update information to the HNSN when the list of devices is updated.

1) Registration function (a function of registering the RG on the HNSN):

The RG agent?36?sends a registration message to the HNSN when the RG agent?36?registers the RG on the HNSN. In this case, the RG agent?36?sends connection information and an RG ID/password. The HNSN performs authentification using the RG ID/password, and stores the connection information of the RG and sends an OK response when the authentification has been successfully performed.

2) Heart-beat function (function of periodically informing the HNSN of the current status of the RG):

When the RG agent?36?is successfully registered, the RG agent?36?transfers the heart beat of the RG?30?to the HNSN?10?by periodically (typically, at one minute interval) sending the current IP information of the RG?30?along with alive messages to the HNSN?10, so that the RG agent?36?allows the IP information of the RG?30?to be managed.

3) Graceful bye function (function of, when the RG terminates, informing the HNSN of the termination of the RG and of performing termination):

When the RG agent?36?terminates normally or is rebooted, the RG agent?36?sends a bye message to the HNSN?10, thus allowing the HNSN?10?to manage the status information of the RG?30.

4) Connected device list maintenance function (a function of managing a list of devices currently connected to the RG and transmitting the list to the HNSN):

When a request from the HNSN?10?exists, the RG agent?36?transmits a list of the home devices connected to the RG?30.

5) New device notification function (a function of detecting newly connected devices, updating the list of the devices, and notifying the HNSN of the detection of new devices):

When the RG?30?detects that new home devices are connected to it, the RG agent?36?sends information about newly attached devices to the HNSN?10?and updates the list of the devices.

Device Proxy Function

The RG agent?36?periodically reports the current status of the RG?30?to the HNSN?10, and acts as a proxy for devices that are installed in the home and connected to the RG?30.

1) Device control function (performing the device control request of the HNSN):

When the RG agent?36?receives device control commands from the HNSN?10, the RG agent?36?discovers and control corresponding devices. Thereafter, the RG agent?36?transmits the results of the control to the HNSN?10.

2) Device status query function (performing the device current-status query request of the HNSN):

Querying to check the status of devices is processed in the same manner as in the device control function. When the HNSN10?transmits query instructions to the RG agent?36, the RG agent?36?checks the status of corresponding devices and transmits status values to the HNSN?10.

3) Device event subscription/unsubscription function (the HNSN applying and canceling the event subscription of devices):

The HNSN?10?may subscribe to the events of a specific device. For the subscription to events, the subscription to events is requested to the RG agent?36. The subscription to events may be cancelled when the subscription of events is not necessary any more.

4) Device event notification function (transmitting events, which are generated by devices, to the HNSN that has requested the event subscription of the devices):

When an event is generated due to variation in the status of a certain device, the RG agent?36?transmits an event message to the HNSN?10?that has requested the event subscription.

With reference to?FIG. 4, the structure of the RG agent is described below.

Communication with the HNSN?10?is performed using a UPnP-based HNSN-RG protocol.

The UPnP collects the information about devices and controls the devices using protocols, such as HTTP, SSDP, GENA, and SOAP, which are currently used based on Transmission Control Protocol (TCP)/IP technology.

SSDP Protocol

The HNSN?10?and the RG agent?36?transmit requests, such as M-SEARCH and NOTIFY, to each other using SSDP/UDP.

1) M-SEARCH

This is a request that is mainly transmitted to the RG agent?36?by the HNSN?10, and is used when the HNSN?10?intends to acquire the list of home devices connected to the RG?30. Commonly, M-SEARCH is requested when the RG agent?36performs registration, or a user makes a "new change" to the list of home devices of the RG?30?through the HNSN UI. When the RG?30?receives the request, the RG?30?checks currently connected home devices and, responses to the request of the HNSN?10?with the Web Uniform Resource Locators (URLs) of description files that describe respective devices, inserted into the location header of a HTTP?200?OK of the HNSN?10, for the respective devices.

2) NOTIFY

When the RG agent?36?requests registration from HNSN?10?and the HNSN?10?responds to the request, the RG agent?36transmits a list of devices, detected by the RG agent?36, to the HNSN?10?using SSDP/NOTIFY. Even in this case, the RG agent?36?transmits the URLs of the description files of the respective devices, which are inserted into the location header, similarly to the response of the M-SEARCH.

HTTP Protocol

This is used when the HNSN?10?downloads an XML file from the description URL transmitted by the RG agent?36?using SSDP.

SOAP Protocol

This is used in two cases, namely, the case in which the RG agent?36?is a control point device, and the case in which the RG agent?36?is a proxy device.

1) The case where the RG agent is a control point

Requests, such as Registration/Alive/Bye/ SetPreference/GetPreference, are transferred to the HNSN?10.

(1) Registration SOAP Request

Assuming that the RG?30?knows basically connection information about the HNSN?10, the RG?30?first requests registration from the SOAP port of the HNSN?10?after the RG?30?is booted and an engine is executed. The HNSN?10?performs authentification, and completes the registration by sending an OK response if the authentification is successful. The HNSN10?sends a 500 error response if authentification fails or errors exist. The RG?30?waits for a predetermined time and then attempts registration again when the RG?30?receives the 500 error response.

(2) Alive SOAP Request

The RG?30?periodically requests Alive to the HNSN?10?thereafter when the registration is successful. The periodic Alive request is to notify the HNSN?10?of any abnormality of the RG?30?in the case in which the RG?30?is abnormally operated or abruptly powered down. Furthermore, when the RG?30?has a flexible IP and the IP of the RG?30?changes, the periodic Alive request allows the HNSN?10?to manage a changed IP.

(3) Bye SOAP Request

The RG?30?requests Bye to the HNSN?10?upon being normally powered down by a user or a manager. The HNSN?10changes the status information of the RG to Power-down upon receiving the Bye, and sends an OK response. The RG?30terminates completely upon receiving the OK response.

(4) SetPreference SOAP Request

This sets authorities that are capable of accessing to the RG?30, and controlling and monitoring devices connected to the RG30.

(5) GetPreference SOAP Request

This acquires authorities that are capable of accessing to the RG?30?set on the HNSN?10?RG?30, and controlling and monitoring devices connected to the RG?30.

2) The case where the RG agent is a proxy device

When it is desired to perform control/query on one device that belongs to a list of devices connected to the RG?30?set on the HNSN?10, the HNSN?10?transmits a SOAP Request to the RG agent?36?and receives result/status information as a response.

(1) Control SOAP Request

When it is desired that the HNSN?10?control a specific device, a Control SOAP Request for controlling the device is transmitted to the RG agent?36, and the RG agent?36?controls the actual device and then transmits a Control SOAP Response, containing resulting values, to the HNSN?10.

(2) Query SOAP Request

When it is desired that the HNSN?10?know the status information of the specific device, a Query SOAP Request for performing querying the status information of the device is transmitted to the RG agent?36, and the RG agent?36?reads the current status information of the actual device and then transmits a Query SOAP Response, containing the status information, to the HNSN?10.

GENA Protocol

This is used when the HNSN?10?applies for or cancels event subscription, to monitor a specific device connected to the RG10, and makes known events generated by the device.

1) Subscribe Request

This is used when it is desired that HNSN?10?subscribe to the events of a specific device of the RG?30. The RG agent?36?has stored the Subscription of the HNSN?10, and processes it when the events are generated from the corresponding device. Thereafter, the RG agent?36?transmits a GENA/Notify Request, containing the event, to the HNSN?10.

2) Unsubscribe Request

This is used when it is desired that the HNSN?10?cancel the event subscription of a specific device of the RG?30. The RG agent?36?deletes the stored subscription of the HNSN?10, and does not transmit a Notify Request to the HNSN?10?even when the corresponding device generates the events later.

3) Notify Request event is generated by

When the subscription of the HNSN?10?to a device has been stored in the RG?30?and the device generates events, the RG30?transmits the Notify Request, containing event details, to the HNSN?10.

With reference to?FIG. 4, the internal structure of the RG is described below. Relationships between the RG agent and the OSGi framework, the UPnP bundle, and the UPnP device services are described.

Relationship with the OSGi Framework

The RG agent?36?is implemented in bundle form installed on the OSGi framework (hereinafter referred to as a "framework"), and is a typical bundle application that can be driven by a bundle activator. The RG agent?36?fetches and uses packages provided by other bundles, and acquires and uses services registered by other bundles.

The RG agent?36?fetches the UPnP device service that has been registered on the framework?34?and constructs a list of devices, and monitors the registration, and registration cancellations, and changes of the UPnP device service in real time by registering a service monitor on the framework?34. Thereafter, UPnP event listener service, which is capable of listening to the events generated by the UPnP device service, is registered on the framework?34, so that the events of a specific device can be subscribed to.

Relationship with the UPnP Bundle

Although the RG agent?36?and the UPnP bundle are not directly related to each other, they are indirectly related to each other through the framework?34. The UPnP event listener service, which is registered on the framework?34?by the RG agent36, is managed by the UPnP bundle, and events generated from the UPnP event listener service are collected by the UPnP bundle and are then transferred to the corresponding UPnP event listener.

Relationship with the UPnP Device Service

Devices, which are transmitted to the HNSN?10?by the RG agent?36, are UPnP device services, rather than physical devices connected to the actual RG?30. To implement UPnP device services is to perform communication using physical devices and interfaces.

The UPnP device services are classified into two types. One is for directly registering the UPnP device service on the framework?34?in a bundle, and the other is for allowing the UPnP bundle to detect actual UPnP devices, which are connected with the RG and exist on the local network, using the UPnP protocol, prepare UPnP device service, and register the UPnP device service on the framework?34. The former performs the UPnP protocol on the local network instead of the UPnP bundle, like the actual UPnP device, which is called a virtual UPnP device.

The RG agent?36?recognizes the two types of UPnP device services as UPnP device service without distinguishing them, and transmits the list of devices to the HNSN?10?upon receiving device list transmission request from the HNSN?10. Thereafter, when the registration or registration cancellation of the UPnP device services are make known through the service listener registered on the framework?34, the RG agent?36?updates the list of devices, which is transmitted to the HNSN?10, through SSDP-Notify-Alive or SSDP-Notify-Byebye in real time.

The RG agent?36?calls the API of managed UPnP device service upon receiving a device control and status query request from the HNSN?10. Thereafter, the RG agent?36?transmits returned values to the HNSN?10?as a response. In the case in which the API of the UPnP device service is called and the UPnP device service corresponds to the actual UPnP device that exist on the local network, the UPnP bundle transmits SOAP messages to the actual UPnP device, and receives and returns responses. In the case in which the UPnP device service corresponds to the virtual UPnP device, the UPnP bundle actually controls physical devices to which the implementation of the UPnP device services is connected, and receives and returns responses.

FIG. 5?is a diagram showing the construction of the UPnP-based RG of the present invention. As shown in?FIG. 5, the UPnP-based RG includes an HNSN server?100?and an RG?110. The RG?110?is provided with a Web server?120?and a UPnP proxy?130. The RG?110?is connected with a plurality of devices?140.

The UPnP Proxy?130?of the RG?110?is constructed so as to provide a function by which a user can remotely control home appliances only using a browser. Furthermore, the UPnP Proxy?130?is constructed such that the user can use it by connecting to the HNSN server?100.

The UPnP Proxy?130?of the RG?110?operates in conjunction with the Web server?120, and provides various services to provide the user (client) remote control function. That is, the UPnP Proxy?130?discovers devices connected and disconnected to and from the home network, and creates a device list Web document using information about the devices. Furthermore, the UPnP Proxy?130?directly controls the devices according to user control commands transmitted from the user, and transmits response messages corresponding to the control. Furthermore, when device events are generated in the home network, the UPnP Proxy?130?transmits the events to the HNSN server?100?based on HTTP, thus allowing the user to know about the generation of the events.

Furthermore, the UPnP Proxy?130?changes the device list Web document so as to be compatible with the HNSN server?100using the connectivity of Web documents and an existing UPnP API. Furthermore, the UPnP Proxy?130?automatically creates HTML and XML presentations based on device descriptions and service descriptions for devices that do not provide presentations.

FIG. 6?is a diagram showing the construction of the module of the UPnP system of the present invention. As shown in?FIG. 6, the UPnP system includes the HNSN server?100, and the UPnP Proxy?130. The HNSN server?100?provides interfaces between wired network users, wireless network users, and mobile phone users. The UPnP Proxy?130?implemented in the RG110?includes an agent?131?and a bridge?132. Communication between the agent?131?and the bridge?132?is performed using HTTP.

The HNSN server?100?includes a message creation/processing module?101?and an event message processing module?102. The message creation/processing module?101?receives the device descriptions and the service descriptions from the RG110?and stores basic information about the devices in a device information database, thus providing current status information and the basic information. The event message processing module?110?receives event messages transmitted from the Proxy, and transmits the received event messages to a handler management module.

The UPnP Proxy?130?includes the bridge?132?and the agent?131, and provides a remote control function to a user through interoperability between the bridge?132?and the agent?131. The bridge?132?controls and manages home network devices, and the agent?131?performs the creation, conversion, and transmission of content, or the transmission of events, to the user.

The bridge?132?discovers and manages devices connected to the home network using the UPnP Software Development Kit (SDK)?132?a?of Intel Co. A device management module?132?b?discovers devices connected and disconnected to and from the home network, and stores information about the devices in the device database?132?c. Thereafter, a control processing module?132?d?controls the devices according to the user‘s control commands and, as a result, transmits response messages, but processes the response messages when an exceptional situations occurs. An event processing module?132?e?is a module that processes events when the statuses of the devices changes and, thereby, generates the events. On the basis of the bridge?132, messages defined by the bridge-device UPnP forum are used, and remote control protocols are used between the bridge?132?and the agent?131?and between the agent?131?and the HNSN server?100. Accordingly, the bridge132?performs conversion between the two protocols, which are performed in a message processing/protocol conversion module?132?f.

The agent?131?is provided with the message creation/processing module?131?a?that operates in conjunction with the message processing/protocol conversion module?132?f?and the message creation/processing module?101?of the HNSN server?100. The message creation/processing module?131?a?is connected with an device event registration/management module?131?b,?an automatic presentation creation and storage module?131?c,?a content creation/conversion unit?131?d,?and a client information management module?131?e, and operates in conjunction with them.

The Definitions of the remote control protocols are given in the following Table 3.

FIG. 7?is a flowchart illustrating messages in the UPnP based-RG system of the present invention. Referring to?FIG. 6 and 7, when the RG?110?is booted up, the RG?110?transmits information about a UPnP-related IP, a port, an ID, and a password to the HNSN server?100, and performs registration, at step S1.

A user makes a connection to the HNSN server?100, and the HNSN server?100?requests the list of devices from RG?110, at step S2. The agent?131, which receives the request, requests the list of devices from the bridge?132?at step S3. The list of devices is transmitted to the HNSN server?100?using the list of devices at steps S4?and S5.

The HNSN server?100?fetches the device descriptions and the service descriptions from the RG?110?using the URL information in messages according to the list of devices.

The user visits the URL of the HNSN server?100?and selects a desired device to control it.

After selecting the device, the user selects control information from a Web document prepared using device description and service description documents received from the RG?110.

The user issues device control commands according to the selection of the control information on the Web document.

The agent?131, which has received device control messages from the HNSN server?100, transmits the control messages to the bridge?132, and the bridge?132?converts the control messages into SOAP messages to transmit them to the device, at steps S6?to S9.

The HNSN server?100?requests and fetches the device descriptions and service descriptions from the RG?110?at steps S10to S17.

The HNSN server?100?registers events for a device desired to be controlled, thus allowing event messages to be received when the corresponding device generates the events, at steps S18?to S29.

When the events are generated by the device, the bridge?132?transmits the generated events to the agent?131, and the agent131?transmits the received events to the HNSN server?100, at steps S30?to S32.

When the user closes the Web browser, the HNSN server?100?performs a termination process.

The HNSN server?100?transmits an event registration cancellation message for the device to the agent?131.

The agent?131?transmits the message to the bridge?132, and the bridge?132?transmits the event registration cancellation message to the device, at steps S33?to S38. Thereafter, a termination process is performed at step S39.

The above-described details are described in more detail with reference to?FIG. 8.

FIG. 8?is a diagram showing communication structure with the HNSN server of the present invention. As shown in?FIG. 8, the RG?110?includes the bridge?132?and the agent?131. These perform communication with the HNSN server?100?and also perform management and control on the UPnP device?140. Firmware update and device update portion is constructed using a management daemon program.

The function of each construction is schematically described below.

1) The function of the agent?131?(C program)

• The conversion of the device description
• The conversion and processing of SSDP, SOAP, and GENA protocol messages
• The installation of a communication module with the HNSN
• The transmission of a home Web Page.
• The performing of reboot and fireware update functions
• The function of setting and canceling ports for NAT port forwarding

2) The function of the bridge?132?(C program)

• The processing of device control messages
• Event management (Subscribe and Unsubscribe)
• The management of devices by the change of documents according to a UPnP standard

3) Update management Daemon (C program)

• Firmware Update
• Device Update

Industrial Applicability

As described above, the residential gateway system for home network service according to the present invention can be applied to an OSGi and UPnP-based home network service field.

From above-describe details, those skilled in the art will appreciate that various modifications are possible without departing from the technical spirit of the invention. Accordingly, the scope of the invention must not be limited to only details of the above-described embodiment, but defined by the claims.

SRC=http://www.google.com/patents/US20080205419

Residential Gateway System for Home Network Service,古老的榕树,5-wow.com