WO2005004387A1

WO2005004387A1 - Mobile home network system

Info

Publication number: WO2005004387A1
Application number: PCT/KR2003/001341
Authority: WO
Inventors: Koon-Seok Lee; Seung-Myun Baek; Hwan-Jong Choi; Yong-Tae Kim; Feel-Young Koo; Ja-In Koo; Seong-Hwan Kang
Original assignee: Lg Electronics, Inc.
Priority date: 2003-07-07
Filing date: 2003-07-07
Publication date: 2005-01-13
Also published as: AU2003246134A1

Abstract

The present invention discloses a mobile home network system (60) which allows a user to communicate with a home network system (60) including different kinds of networks by using a user mobile terminal (10). The mobile home network system (60) includes a user mobile terminal (10) connected to a mobile service server (24) through a wireless communication network, for transmitting a packet including an authentication request data containing an authentication data, an authentication server (50) connected to the mobile service server (24) through a network (30), for receiving the packet containing the authentication data from the mobile service server (24), comparing the authentication data with a registered authentication data, and transmitting a packet containing an authentication result data, a home master terminal (70) connected to the mobile service server (24) and the authentication server (50) through the network (30), for transmitting a packet containing a previously-stored authentication data to the authentication server (50), and registering the authentication data, and a mobile service server (24) for receiving the packet containing the authentication request data from the user mobile terminal (10), transmitting the packet containing the authentication data to the authentication server (50), and allowing the user mobile terminal (10) to access the home master terminal (70) according to the authentication result data from the authentication server (50).

Description

MOBILE HOME NETWORK SYSTEM

TECHNICAL FIELD The present invention relates to a mobile home network system, and more particularly to, a mobile home network system which allows a user to communicate with a home network system including different kinds of networks by using a user mobile terminal.

BACKGROUND ART Home automation for automatically controlling home appliances at home or remotely has almost reached a commercial use stage. At its early stage, the home automation separately controlled each home appliance by using a telephone or infrared rays, and did not connect the home appliances one another. However, there has been suggested a method for building a network of home appliances by using a communication means, and collectively managing the network by using a controller. In general, a home network connects various digital home appliances so that a user can always enjoy convenient, safe and economic life services inside or outside the house. As factors of the advent of the home network, refrigerators or washing machines called white home appliances have been gradually digitalized due to development of digital signal processing techniques, and new information home appliances have been made due to rapid development of home appliance operating system techniques and high speed multimedia communication techniques. Here, an IT network is built to exchange data between a personal computer and peripheral devices or provide internet services, and an AV network is built between home appliances using audio or video information. In addition, a living network is built to simply control home appliances, such as home automation or remote meter reading, and may be comprised of a refrigerator, washing machine, microwave oven, electric lamp, gas alarm, air conditioner and telephone. The home network system includes a master device which is a home appliance for controlling an operation of the other home appliances or monitoring a status thereof, and a slave device which is a home appliance having a function of responding to the request of the master device and a function of notifying a status change according to properties of the home appliances or other factors. Here, the home appliances (or new devices) include home appliances for the living network service such as a washing machine and a refrigerator as well as home appliances for the IT network service and the AV network service.

DISCLOSURE OF THE INVENTION An object of the present invention is to provide a mobile home network system which allows a user to control and monitor a home network system anytime anywhere by communicating with the home network system by using a user mobile terminal. Another object of the present invention is to provide a mobile home network system which can easily connect a user mobile terminal to a home network system by enabling different kinds of networks to communicate with each other. Yet another object of the present invention is to provide a mobile home network system which can automatically connect a home network system to the mobile home network system for communication. Yet another object of the present invention is to provide a mobile home network system which can improve authentication efficiency and reliability and reduce data throughput of a mobile service server by using an authentication server for authenticating access of a user mobile terminal to a home network system. Yet another object of the present invention is to provide a mobile home network system which can improve authentication reliability by performing a plurality of processes for authenticating access of a user mobile terminal to a home network system. In order to achieve the above-described objects of the invention, there is provided a mobile home network system including: a user mobile terminal connected to a mobile service server through a wireless communication network, for transmitting a packet including an authentication request data containing an authentication data; an authentication server connected to the mobile service server through a network, for receiving the packet containing the authentication data from the mobile service server, comparing the authentication data with a registered authentication data, and transmitting a packet containing an authentication result data; a home master terminal connected to the mobile service server and the authentication server through the network, for transmitting a packet containing a previously-stored authentication data to the authentication server, and registering the authentication data; and a mobile service server for receiving the packet containing the authentication request data from the user mobile terminal, transmitting the packet containing the authentication data to the authentication server, and allowing the user mobile terminal to access the home master terminal according to the authentication result data from the authentication server. Preferably, the authentication result data is one of an authentication ACK data and an authentication NAK data. When the mobile service server receives the packet containing the authentication ACK data, the mobile service server allows the user mobile terminal to access the home master terminal, and when the mobile service server receives the packet containing the authentication NAK data, the mobile service server retransmits the packet to the user mobile terminal. Preferably, the home master terminal transmits a packet containing an access request data to the mobile service server, and the mobile service server decides accessibility of the home master terminal, and transmits a packet containing an access ACK data to the home master terminal to allow communication, or transmits a packet containing an access NAK data to the home master terminal. Preferably, when the home master terminal can communicate with the mobile service server, the home master terminal transmits a previously-stored ID number of an accessible user mobile terminal to the mobile sen/ice server, and the mobile service server stores and registers the ID number. Preferably, the mobile service server compares the ID number of the user mobile terminal contained in the authentication request data with the registered ID number, and transmits the packet containing the authentication data to the authentication server, or a packet containing an authentication rejection data to the user mobile terminal according to the comparison result. Preferably, when the home master terminal can communicate with the mobile service server, the home master terminal transmits a dummy signal to the mobile service server at an interval of a predetermined time to confirm a current access status. According to another aspect of the invention, a mobile service server includes: a network connection means connected to a user mobile terminal through a network, for transmitting and receiving a packet, connected to a home master terminal for transmitting and receiving the packet, and connected to an authentication server for authenticating access of the user mobile terminal to the home master terminal through the network; and a decision means for receiving a packet including an authentication request data containing an authentication data from the user mobile terminal, transmitting the packet to the authentication server, deciding accessibility of the user mobile terminal to the home master terminal according to the authentication result of the authentication server, and transmitting the packet respectively to the user mobile terminal and the home master terminal through the network connection means. Preferably, the mobile service server further includes an access status confirmation means for receiving a packet containing an access request data from the home master terminal, deciding accessibility, and transmitting a packet containing an access ACK data to the home master terminal through the network connection means to allow communication. Preferably, the mobile service server further includes a registration means for receiving an ID number of an accessible user mobile terminal from the home master terminal through the network connection means, and registering the ID number. Preferably, when the decision means receives a packet containing an authentication ACK data according to the authentication result of the authentication server, the decision means allows the user mobile terminal to access the home master terminal, and when the decision means receives a packet containing an authentication NAK data, the decision means retransmits the packet to the user mobile terminal. Preferably, the decision means compares the ID number of the user mobile terminal contained in the authentication request data with the registered ID number, and transmits the packet containing the authentication data to the authentication server, or a packet containing an authentication rejection data to the user mobile terminal. Preferably, the mobile service server confirms a current access status by receiving a dummy signal from the home master terminal at an interval of a predetermined time. According to another aspect of the invention,^' a login method of a mobile service server includes the steps of: accessing a home master terminal; receiving a packet containing an authentication request data from a user mobile terminal; deciding accessibility of the user mobile terminal to the home master terminal according to the authentication request data; and connecting the user mobile terminal to the home master terminal according to the decision result. Preferably, the step for accessing the home master terminal includes the steps of: receiving, at the mobile service server, an access request data from the home master terminal; confirming an access status at the mobile service server, transmitting a packet containing an access ACK data or access NAK data to the home master terminal according to the confirmation result; and transmitting the packet containing the access ACK data, and allowing communication between the mobile service server and the home master terminal. Preferably, the login method further includes the steps of: receiving, at the mobile service server, an ID number of an accessible user mobile terminal from the home master terminal; and storing and registering the ID number. Preferably, the login method further includes the steps of: receiving, at the mobile service server, a dummy signal from the home master terminal at an interval of a predetermined time to confirm a current access status; and when the dummy signal is inputted, confirming access to the home master terminal. Preferably, the login method further includes the steps of: transmitting a packet containing an authentication data of the authentication request data to an authentication server; receiving a packet containing an authentication ACK data or authentication NAK data from the authentication server; and when the packet containing the authentication ACK data is inputted, allowing the user mobile terminal to access the home master terminal, and when the packet containing the authentication NAK data is inputted, retransmitting the packet to the user mobile terminal. Preferably, the login method further includes the steps of: comparing the ID number of the user mobile terminal contained in the authentication request data with the registered ID number; and transmitting the packet containing the authentication data to the authentication server, or a packet containing an authentication rejection data to the user mobile terminal according to the comparison result. According to another aspect of the invention, a program storage medium stores a computer readable program which is provided to a mobile service server for connecting a user mobile terminal to a home master terminal in a mobile home network system, and which includes the steps of: accessing the home master terminal; receiving a packet containing an authentication request data from the user mobile terminal; deciding accessibility of the user mobile terminal to the home master terminal according to the authentication request data; and connecting the user mobile terminal to the home master terminal according to the decision result. Preferably, the step for accessing the home master terminal includes the steps of: receiving, at the mobile service server, an access request data from the home master terminal; confirming an access status at the mobile service server; transmitting a packet containing an access ACK data or access NAK data to the home master terminal according to the confirmation result; and transmitting the packet containing the access ACK data, and allowing communication between the mobile service server and the home master terminal. Preferably, the program further includes the steps of: receiving, at the mobile service server, an ID number of an accessible user mobile terminal from the home master terminal; and storing and registering the ID number. Preferably, the program further includes the steps of: receiving, at the mobile service server, a dummy signal from the home master terminal at an interval of a predetermined time to confirm a current access status; and when the dummy signal is inputted, confirming access to the home master terminal. Preferably, the program further includes the steps of: transmitting a packet containing an authentication data of the authentication request data to an authentication server; receiving a packet containing an authentication ACK data or authentication NAK data from the authentication server; and when the packet containing the authentication ACK data is inputted, allowing the user mobile terminal to access the home master terminal, and when the packet containing the authentication NAK data is inputted, retransmitting the packet to the user mobile terminal. Preferably, the program further includes the steps of: comparing the ID number of the user mobile tenninal contained in the authentication request data with the registered ID number; and transmitting the packet containing the authentication data to the authentication server, or a packet containing an authentication rejection data to the user mobile terminal according to the comparison result. According to another aspect of the invention, an authentication server of a mobile home network system includes: a network connection means connected to a mobile service server through a network, for transmitting and receiving a packet; a storage means for storing an authentication data; and a control means for receiving a packet containing an authentication data for access to a home master terminal transmitted to the mobile service server from the network connection means, comparing the received authentication data with the stored authentication data, generating a packet containing an authentication result data according to the comparison result, and transmitting the packet to the mobile service server through the network connection means. Preferably, the authentication result data is one of an authentication ACK data and an authentication NAK data. Preferably, the network connection means is connected to the home master terminal through the network, and the authentication server further includes a registration means for receiving the packet containing the authentication data previously stored in the home master terminal through the network connection means, and storing and registering the authentication data in the storage means. According to another aspect of the invention, an authentication method for login of a mobile home network system includes the steps of: receiving a packet containing an authentication data for access to a home master terminal transmitted to a mobile service server by a user mobile terminal from the mobile service server; comparing the received authentication data with a registered authentication data; generating a packet containing an authentication result data according to the comparison result; and transmitting the packet to the mobile service server. Preferably, the authentication result data is one of an authentication ACK data and an authentication NAK data. Preferably, the authentication method further includes the steps of: receiving, at the authentication server, an authentication data previously stored in the home master terminal; and storing and registering the authentication data. According to another aspect of the invention, a program storage medium stores a computer readable program which is provided to an authentication server for authenticating access of a user mobile terminal to a home network system in a mobile home network system, and which includes the steps of: receiving a packet containing an authentication data for access to a home master terminal transmitted to a mobile service server by the user mobile terminal from the mobile service server; comparing the received authentication data with a registered authentication data; generating a packet containing an authentication result data according to the comparison result; and transmitting the packet to the mobile service server. Preferably, the authentication result data is one of an authentication ACK data and an authentication NAK data. Preferably, the program further includes the steps of: receiving, at the authentication server, an authentication data previously stored in the home master terminal; and storing and registering the authentication data. According to another aspect of the invention, a home master terminal of a mobile home network system includes: a network connection means connected to a mobile service server through a network, for transmitting and receiving a packet; and a control means for transmitting a packet containing an access request data to the mobile service server through the network connection means, receiving an access ACK data or access NAK data from the mobile service server, accessing the mobile service server when receiving the access ACK data, and retransmitting the packet containing the access request data to the mobile service server when receiving the access NAK data. Preferably, the home master terminal further includes a user interface means for receiving a data; and a storage means for storing the data. Preferably, the control means stores an ID number of an accessible user mobile terminal inputted through the user interface means in the storage means, and transmits the ID number to the mobile service server through the network connection means. Preferably, the control means transmits a dummy signal for confirming a current access status to the mobile service server at an interval of a predetermined time. Preferably, the control means stores an authentication data inputted through the user interface means in the storage means, the network connection means is connected to an authentication server through the network, and the control means transmits the packet containing the authentication data to the authentication server through the network connection means and registers the authentication data. According to another aspect of the invention, a login method of a mobile home network system includes the steps of: transmitting a packet containing an access request data to a mobile service server; receiving a packet containing an access ACK data or access NAK data from the mobile service server; and when the packet containing the access ACK data is inputted, accessing the mobile service server, and when the packet containing the access NAK data is inputted, retransmitting the packet containing the access request data to the mobile service server. Preferably, the login method further includes a step for transmitting a previously-stored ID number of an accessible user mobile terminal to the mobile service server, after the step for connecting the home master terminal to the mobile service server. Preferably, the login method further includes a step for transmitting a dummy signal for confirming a current access status to the mobile service server at an interval of a predetermined time. Preferably, the login method further includes a step for transmitting a packet containing a previously-stored authentication data to an authentication server, and registering the authentication data. According to another aspect of the invention, a program storage medium stores a computer readable program which is provided to a home master terminal for authentication of an authentication server and access to a mobile service server in a mobile home network system, and which includes the steps of: transmitting a packet containing an access request data to the mobile service server; receiving a packet containing an access ACK data or access NAK data from the mobile service server; and when the packet containing the access ACK data is inputted, accessing the mobile service server, and when the packet containing the access NAK data is inputted, retransmitting the packet containing the access request data to the mobile service server. Preferably, the program further includes a step for transmitting a previously-stored ID number of an accessible user mobile terminal to the mobile service server, after the step for connecting the home master terminal to the mobile service server. Preferably, the program further includes a step for transmitting a dummy signal for confirming a current access status to the mobile service server at an interval of a predetermined time. Preferably, the program further includes a step for transmitting a packet containing a previously-stored authentication data to the authentication server, and registering the authentication data. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a structure view illustrating a mobile home network system in accordance with the present invention; Fig. 2 is a flowchart showing operations of the mobile home network system of Fig. 1 ; Figs. 3A and 3B are flowcharts showing an access step (S21) of Fig. 2; Fig. 4 is a flowchart showing an authentication step (S22) of Fig. 2; Fig. 5 is a structure view illustrating a mobile service server of Fig. 1 ; Fig. 6 is a structure view illustrating a home master terminal of Fig. 1; and Fig. 7 is a structure view illustrating an authentication server of Fig. 1.

BEST MODE FOR CARRYING OUT THE INVENTION A mobile home network system in accordance with the present invention will now be described in detail with reference to the accompanying drawings. Fig. 1 is a structure view illustrating the mobile home network system in accordance with the present invention. Referring to Fig. 1 , the mobile home network system 1 is comprised of a mobile terminal 10 of a user, a wireless communication network 20 including a base station 22 for a wireless data service of the mobile terminal 10 and a mobile communication company server 24, an internet network 30 based on a predetermined protocol, a mobile service server 40 for communication between the mobile terminal 10 and a home network system 60, an authentication server 50 for authentication of the mobile terminal 10 to the home network system 60, and the home network system 60 including a home master terminal 70 connected to a plurality of home appliances (washing machine 91 , refrigerator 92, window 93, microwave oven 94 and television 95) through a bus network 90 based on a predetermined protocol for controlling and/or monitoring the home appliances, and connected to external input means such as a camera 62 and a microphone 64. Here, the mobile terminal 10 includes a cellular phone, mobile phone (for example, wireless internet mobile phone) or personal digital assistant (PDA) which can access through a wireless application protocol (WAP) or wireless hypertext transfer protocol (HTTP) and transmit wireless packets. The wireless communication network 20 for wireless data communication has the base station 22 for general calls and the mobile communication company server 24 for providing an internet service. The internet network 30 pursues to a predetermined protocol (for example,

TCP/IP). The mobile terminal 10, the mobile service server 40, the authentication server 50 and the home network system 60 access through the internet network 30 to communicate with each other. Hereinafter, a packet transmitted through the internet network 30 is defined as a first packet based on a predetermined protocol. A packet transmitted or received by the mobile terminal 10 is also defined as a first packet. The mobile service server 40 includes a mobile server, a media server and a push server, and decides whether the home network system 60 is accessible to itself through the internet network 30, and communicates with the home network system 60. In addition, the mobile service server 40 decides whether the mobile terminal 10 is accessible to the home network system 60, and connects the mobile terminal 10 and the home network system 60 to communicate with each other according to the decision result. A method for receiving a first packet containing an authentication request data including an authentication data (for example, ID and password) from the mobile terminal 10, and transmitting the authentication data to the authentication server 50 for authentication, and a method for comparing an ID number (for example, telephone number) of the mobile terminal 10 contained in the authentication request data with a previously-stored ID number (discussed later in detail), and authenticating the mobile terminal 10 according to the comparison result can be used at the same time to decide accessibility, which will later be explained in detail. The authentication server 50 receives a first packet containing an authentication data thorough the home network system 60 and the internet network 30, and stores the authentication data. When the mobile service server 40 transmits a first packet containing an authentication data from the mobile terminal 10, the authentication server 50 compares the transmitted authentication data with the previously-stored authentication data, transmits a first packet containing an authentication ACK data to the mobile service server 40 when the data are identical, and transmits a first packet containing an authentication NAK data to the mobile service server 40 when the data are not identical. In the case that a plurality of mobile terminals 10 access the mobile service server 40 at the same time, it takes a long time for the mobile service server 40 to simultaneously authenticate the mobile terminals 10. Accordingly, the authentication server 40 authenticates the mobile terminals 10 to reduce data throughput of the mobile service server 40, and increase the whole data throughput. Moreover, the authentication server 50 stores the authentication data from the home network system 60, and thus the mobile service server 40 needs not to directly access the home network system 60 to receive and process the authentication data. In addition, the home network system 60 includes the home appliances, and the bus network 90 different from the internet network 30. The bus network 90 is based on a different protocol from the internet network 30, for transmitting a second packet different from the first packet of the internet network 30. The first and second packets pursue to different protocols, but may have the same data or message. The bus network 90 can be a power line communication (PLC), IrDA, Bluetooth or RF network. The bus network 90 and the internet network 30 are physically and/or logically separated, and connected to each other by the home master terminal 70. The separated networks of the internet network 30 transmitting the first packet and the bus network 90 transmitting the second packet allow the home master terminal 70 to control the whole first and second packets and protect the home appliances from the external environment. The home appliances connected to the bus network 90 are actually control means (not shown) of each home appliance. The home master terminal 70 is connected to the home appliances through the bus network 90, and also connected to the external input means such as the camera 62 and the microphone 64. The home master terminal 70 converts a data obtained by the external input means into a predetermined mobile format to be displayed on the mobile terminal 10, and transmits the mobile format data to the mobile service server 40 (or mobile terminal 10). In addition, the home master terminal 70 can receive information from the mobile terminal 10 and store the information for the user. The home master terminal 70 includes a user interface means (not shown). Therefore, the home master terminal 70 can receive the authentication data for authentication of the authentication server 50, and the ID number of the accessible mobile terminal 10 through the mobile home network service for authentication using the ID number in the mobile service server 40, and store the authentication data and the ID number. Fig. 2 is a flowchart showing operations of the mobile home network system of Fig. 1. As shown in Fig. 2, the operations include an access step (S21 ), an authentication step (S22) and a processing step (S23). In detail, in the access step (S21 ), the home network system 60 (specifically the home master terminal 70) accesses the mobile service server 40 through the internet network 30 for communication, which will later be explained in detail with reference to Figs. 3A and 3B. In the authentication step (S22), when the first packet containing the authentication request data including the authentication data generated by the user through a predetermined input means (not shown) is transmitted from the mobile terminal 10 to the mobile service server 40 through the wireless communication network 20, the mobile service server 40 simultaneously or selectively performs two authentication processes, which will later be explained in detail with reference to Fig. 4. In the processing step (S23), when the mobile terminal 10 is connected to communicate with the home network system 60, the user generates a control command for the home appliance by using the mobile terminal 10 and transmits the control command to the mobile service server 40 through the first packet. The mobile service server 40 transmits the first packet to the home network system 60, the home network system 60 receives the first packet, and the home master terminal 70 converts the first packet into the second packet and transmits the second packet to the home appliance corresponding to the control command through the bus network 90. The home appliance performing the control operation transmits a second packet containing a control response to the home master terminal 70, the home master terminal 70 converts the second packet into the first packet and transmits the first packet to the mobile service server 40, and the mobile service server 40 transmits the first packet to the mobile terminal 10, so that the user can confirm the control response to the control command. The control command and the control response are referred to as control information. The control information is transmitted in the form of the first packet and/or second packet, and includes data relating to controlling (or monitoring ) of the home appliances. Figs. 3A and 3B are flowcharts showing the access step (S21 ) of Fig.2. Fig.

3A is a flowchart showing the access step (S21 ) of the home master terminal 70, and Fig. 3B is a flowchart showing the access step (S21) of the mobile service server 40. The access step (S21) is embodied by access operations of the home master terminal 70 and the mobile service server 40. In S31 of Fig. 3A, the home master terminal 70 decides whether it is connected to communicate with the mobile service server 40. If so, the home master terminal 70 ends the routine, and if not, the home master terminal 70 goes to S32. In S32, the home master terminal 70 transmits a first packet containing an access request data to the mobile service server 40 through the internet network 30 to access the mobile service server 40. In S33, the home master terminal 70 waits for reception of a first packet containing an access ACK data from the mobile service server 40. When the home master terminal 70 does not receive the first packet containing the access ACK data within a predetermined time (because of, for example, error of communication line), or when the home master terminal 70 receives a first packet containing an access NAK data, the home master terminal 70 goes to S34 to retransmit the first packet containing the access request data to the mobile service server 40. When the home master terminal 70 receives the first packet containing the access ACK data, the home master terminal 70 transmits a first packet containing an ID number of the mobile terminal 10 accessible to the home network system 60 to the mobile service server 40 in S35. Therefore, the access step (S21) of the home master terminal 70 is finished. In addition, the home master terminal 70 transmits a first packet containing a previously-stored authentication data to the authentication server 50 through the internet network 30, and the authentication server 50 stores the authentication data. The home master terminal 70 transmits a first packet containing a dummy signal to the mobile service server 40 at an interval of a predetermined time in order to confirm a current access status. When the home master terminal 70 is disconnected from the mobile service server 40, the home master terminal 70 transmits the first packet containing the access request data to the mobile service server 40. In S41 of Fig. 3B, the mobile service server 40 receives the first packet containing the access request data from the home master terminal 70. In S42, the mobile service server 40 decides accessibility of the home master terminal 70. When the home master terminal 70 is not accessible, the mobile service server 40 transmits the first packet containing the access NAK data to the home master terminal 70 in S46. When the home master terminal 70 is accessible, the mobile service server 40 transmits the first packet containing the access ACK data to the home master terminal 70, and is connected to communicate with the home master terminal 70 in S43. In S44, the mobile service server 40 receives the first packet containing the

ID number of the accessible mobile terminal 10 from the home master terminal 70, and in S45, the mobile service server 40 stores and registers the ID number. Such methods can be made in the form of a program and stored in the home master terminal, the mobile service server and the authentication server connected to the mobile home network system. Fig. 4 is a flowchart showing the authentication step (S22) of Fig. 2. As illustrated in Fig. 4, the mobile service server 40 performs a first authentication method including steps S51-S53 and a second authentication method including steps S54-S58, or only performs the second authentication method. In detail, in S51, the mobile service server 40 receives a first packet including an authentication request data containing an authentication data from the mobile terminal 10 through the wireless communication network 20. In S52, the mobile service server 40 reads the ID number of the mobile terminal 10 contained in the authentication request data, and compares the ID number with the previously-stored and registered ID number. When the ID numbers are identical, the mobile service server 40 goes to S54, and when the ID numbers are different, the mobile service server 40 goes to S53 to transmit a first packet containing an authentication rejection data to the mobile terminal 10. In S54, the mobile service server 40 reads the authentication data from the authentication request data, adds the authentication data to the first packet, and transmits the first packet to the authentication server 50. The authentication server 50 compares the registered authentication data from the home master terminal 70 with the received authentication data. When the authentication data are identical, the authentication server 50 transmits a first packet containing an authentication ACK data to the mobile service server 40, and when the authentication data are different, the authentication server 50 transmits a first packet containing an authentication NAK data to the mobile service server 40. In S55, when the mobile service server 40 receives the first packet containing the authentication ACK data, the mobile service server 40 goes to S56 in order to connect the mobile terminal 10 to the home master terminal 70 for communication. When the mobile service server 40 does not receive the authentication ACK data, the mobile service server 40 decides whether it receives the first packet containing the authentication NAK data in S57. When the mobile service server 40 does not receive the first packet containing the authentication NAK data, the mobile service server 40 goes to S55, and waits for reception of the first packet from the authentication server 50. When the mobile service server 40 receives the first packet containing the authentication NAK data, the mobile service server 40 transmits the first packet containing the authentication NAK data to the mobile terminal 10 in S58. Accordingly, the user of the mobile terminal 10 receives the first packet containing the authentication request data again, or ends the procedure. Fig. 5 is a structure view illustrating the mobile service server of Fig. 1. As illustrated in Fig. 5, the mobile service server 40 includes a network connection means 42 connected to the internet network 30, a decision means 44 for deciding accessibility of the mobile terminal 10 to the home network system 60, an access status confirmation means 46 for confirming access of the home network system 60 to the mobile service server 40, and a registration means 48 for receiving the ID number of the accessible mobile terminal 10 from the home network system 60 and storing the ID number. In detail, the decision means 44 receives the first packet containing the authentication request data including the authentication data from the mobile terminal 10 through the network connection means 42, performs the authentication process for comparing the ID number of the mobile terminal 10 contained in the authentication request data with the ID number previously stored in the registration means 48, and/or transmits the authentication data to the authentication server 50 through the first packet, receives the first packet containing an authentication result data from the authentication server 50, and decides authentication of the mobile terminal 10 to the home network system 60. The authentication result data includes an authentication ACK data or authentication NAK data. When receiving the authentication ACK data from the authentication server 50, the decision means 44 decides that the mobile terminal 10 has a right to use the home network system 60, and transmits the first packet containing the control information and/or non-control information from the mobile terminal 10 to the home network system 60. In the opposite case, the decision means 44 transmits the first packet. When the access status confirmation means 46 receives the first packet containing the access request data from the home master terminal 70 of the home network system 60 through the network connection means 42, the access status confirmation means 46 confirms an access status between the home master terminal 70 and the mobile service server 40 for communication, and transmits the first packet containing the access ACK data or access NAK data to the home master terminal 70. In addition, the access status confirmation means 46 receives the first packet containing the dummy signal from the home master terminal 70 at an interval of a predetermined time, and confirms the access status between the home master terminal 70 and the mobile service server 40. Fig. 6 is a structure view illustrating the home master terminal of Fig. 1. Referring to Fig. 6, the home master terminal 70 includes a home appliance control module 72 for processing the second packet for controlling and monitoring the home appliances through the bus network 90, a memory 74, a user interface means 76 for processing input/output by the user, a data processing module 78 for receiving a data from an external input means 66 and processing the data, and a mobile agent module 80 for accessing the internet network 30, receiving and transmitting the first packet, and converting the first packet into the second packet. In detail, the home appliance control module 72 is connected to the mobile agent module 80 for transmitting or receiving the second packet. The second packet includes a control command or control response. The home appliance control module 72 transmits the control command to the corresponding home appliance through the bus network 90, receives the control response from the home appliance, and transmits the control response to the mobile agent module 80. The memory 74 is connected to the user interface means 76 for receiving the authentication data and the ID number of the accessible mobile terminal 10 and storing the authentication data and the ID number, and also connected to the mobile agent module 80 and the data processing module 78 for storing the non-control information. The user interface means 76 is an input means such as a keyboard, touch pad or mouse. The data processing module 78 is connected to the external input means

66, for receiving the data, and storing the data in the memory 74 or transmitting the data to the mobile agent module 80, and for receiving the first packet containing the non-control information from the mobile agent module 80, and processing the first packet or storing the non-control information in the memory 74. The mobile agent module 80 generates the first packet containing the access request data to access the mobile service server 40, and transmits the first packet to the mobile service server 40. When the mobile agent module 80 receives the first packet containing the access ACK data from the mobile service server 40, the mobile agent module 80 is connected to communicate with the mobile service server 40, for adding the ID number stored in the memory 74 to the first packet, and transmitting the first packet to register the ID number. When the mobile agent module 80 receives the first packet containing the access NAK data from the mobile service server 40, the mobile agent module 80 retransmits the first packet containing the access request data to access the mobile service server 40. The access step is executed when power is supplied to the home master terminal 70 or when a command is inputted by the user. In addition, the mobile agent module 80 accesses the authentication server 50 through the internet network 30, and transmits the first packet containing the authentication data stored in the memory 74 to register the authentication data. The mobile agent module 80 accesses the mobile service server 40, and transmits and receives the first packet through the internet network 30. When the information of the first packet is control information, the mobile agent module 80 converts the first packet into the second packet and transmits the second packet to the home appliance control module 72. When the information of the first packet is non-control information, the mobile agent module 80 stores the first packet in the memory 74 or transmits the first packet to the data processing module 78. In addition, the mobile agent module 80 receives the second packet containing the control information from the home appliance control module 72, converts the second packet into the first packet, and transmits the first packet to the mobile service server 40. When the mobile agent module 80 receives the data from the data processing module 78, the mobile agent module 80 converts the data into a mobile format, and transmits the mobile format data to the mobile service server 40 or stores the data in the memory 74. The mobile agent module 80 accesses the mobile service server 40, and transmits the first packet containing the dummy signal for confirming the current access status to the mobile service server 40 through the intemet network 30 at an interval of a predetermined time, to continuously maintain the access to the mobile service server 40. When the mobile agent module 80 is disconnected from the mobile service server 40, the mobile agent module 80 retransmits the first packet containing the access request data to the mobile service server 40, and repeats the access procedure. Fig. 7 is a structure view illustrating the authentication server of Fig. 1. As illustrated in Fig. 7, the authentication server 50 includes a network connection means 51 connected to the internet network 30 to be connected to the mobile service server 40 and the home master terminal 70, a storage means 52 for storing an authentication data, a registration means 53 for receiving from the control means 54 an authentication data transmitted from the home master terminal 70 through the network connection means 51 , and storing and registering the authentication data in the storage means 52, and a control means 54 for receiving a first packet containing an authentication data for access to the home master terminal 70 transmitted from the mobile service server 40 through the network connection means 51 , comparing the authentication data with the stored authentication data, and transmitting a first packet containing an authentication result data according to the comparison result. Here, the home master terminal 70 transmits the first packet containing the authentication data inputted by the user to the authentication server 50, and the registration means 53 receives the first packet containing the authentication data from the control means 54, and stores and registers the authentication data in the storage means 52. The registration means 53 can store a unique or plural authentication data for the home master terminal 70. The control means 54 transmits the authentication data contained in the packet from the home master terminal 70 to the registration means 53, and performs the authentication process on the authentication data contained in the packet from the mobile service server 40. When the received authentication data is identical to the stored authentication data, the control means 54 transmits the first packet containing the authentication ACK data to the mobile service server 40 through the network connection means 51 as the authentication result data, and when the received authentication data is different from the stored authentication data, the control means 54 transmits the first packet containing the authentication NAK data as the authentication result data. Although the preferred embodiments of the present invention have been described, it is understood that the present invention should not be limited to these preferred embodiments but various changes and modifications can be made by one skilled in the art within the spirit and scope of the present invention as hereinafter claimed.

Claims

What is claimed is:

1. A mobile home network system, comprising: a user mobile terminal connected to a mobile service server through a wireless communication network, for transmitting a packet including an authentication request data containing an authentication data; an authentication server connected to the mobile service server through a network, for receiving the packet containing the authentication data from the mobile service server, comparing the authentication data with a registered authentication data, and transmitting a packet containing an authentication result data; a home master terminal connected to the mobile service server and the authentication server through the network, for transmitting a packet containing a previously-stored authentication data to the authentication server, and registering the authentication data; and a mobile service server for receiving the packet containing the authentication request data from the user mobile terminal, transmitting the packet containing the authentication data to the authentication server, and allowing the user mobile terminal to access the home master terminal according to the authentication result data from the authentication server.

2. The system of claim 1 , wherein the authentication result data is one of an authentication ACK data and an authentication NAK data.

3. The system of claim 2, wherein, when the mobile service server receives the packet containing the authentication ACK data, the mobile service server allows the user mobile terminal to access the home master terminal, and when the mobile service server receives the packet containing the authentication NAK data, the mobile service server retransmits the packet to the user mobile terminal.

4. The system of one of claims 1 to 3, wherein the home master terminal transmits a packet containing an access request data to the mobile service server, and the mobile service server decides accessibility of the home master terminal, and transmits a packet containing an access ACK data to the home master terminal to allow communication, or transmits a packet containing an access NAK data to the home master terminal.

5. The system of claim 4, wherein, when the home master terminal can communicate with the mobile service server, the home master terminal transmits a previously-stored ID number of an accessible user mobile terminal to the mobile service server, and the mobile service server stores and registers the ID number.

6. The system of claim 5, wherein the mobile service server compares the ID number of the user mobile terminal contained in the authentication request data with the registered ID number, and transmits the packet containing the authentication data to the authentication server, or a packet containing an authentication rejection data to the user mobile terminal according to the comparison result.

7. The system of claim 4, wherein, when the home master terminal can communicate with the mobile service server, the home master terminal transmits a dummy signal to the mobile service server at an interval of a predetermined time to confirm a current access status.

8. A mobile service server, comprising: a network connection means connected to a user mobile terminal through a network, for transmitting and receiving a packet, connected to a home master terminal for transmitting and receiving the packet, and connected to an authentication server for authenticating access of the user mobile tenninal to the home master terminal through the network; and a decision means for receiving a packet including an authentication request data containing an authentication data from the user mobile terminal, transmitting the packet to the authentication server, deciding accessibility of the user mobile terminal to the home master terminal according to the authentication result of the authentication server, and transmitting the packet respectively to the user mobile terminal and the home master terminal through the network connection means.

9. The server of claim 8, further comprising an access status confirmation means for receiving a packet containing an access request data from the home master terminal, deciding accessibility, and transmitting a packet containing an access ACK data to the home master terminal through the network connection means to allow communication.

10. The server of claim 9, further comprising a registration means for receiving an ID number of an accessible user mobile terminal from the home master terminal through the network connection means, and registering the ID number.

11. The server of one of claims 8 to 10, wherein, when the decision means receives a packet containing an authentication ACK data according to the authentication result of the authentication server, the decision means allows the user mobile terminal to access the home master terminal, and when the decision means receives a packet containing an authentication NAK data, the decision means retransmits the packet to the user mobile terminal.

12. The server of claim 11 , wherein the decision means compares the ID number of the user mobile terminal contained in the authentication request data with the registered ID number, and transmits the packet containing the authentication data to the authentication server, or a packet containing an authentication rejection data to the user mobile terminal.

13. The server of claim 9, which confirms a current access status by receiving a dummy signal from the home master terminal at an interval of a predetermined time.

14. A login method of a mobile service server, comprising the steps of: accessing a home master terminal; receiving a packet containing an authentication request data from a user mobile terminal; deciding accessibility of the user mobile terminal to the home master terminal according to the authentication request data; and connecting the user mobile terminal to the home master terminal according to the decision result.

15. The method of claim 14, wherein the step for accessing the home master terminal comprises the steps of: receiving, at the mobile service server, an access request data from the home master terminal; confirming an access status at the mobile service server; transmitting a packet containing an access ACK data or access NAK data to the home master terminal according to the confirmation result; and transmitting the packet containing the access ACK data, and allowing communication between the mobile service server and the home master terminal.

16. The method of claim 15, further comprising the steps of: receiving, at the mobile service server, an ID number of an accessible user mobile terminal from the home master terminal; and storing and registering the ID number.

17. The method of claim 16, further comprising the steps of: receiving, at the mobile service server, a dummy signal from the home master terminal at an interval of a predetermined time to confirm a current access status; and when the dummy signal is inputted, confirming access to the home master terminal.

18. The method of one of claims 14 to 17, further comprising the steps of: transmitting a packet containing an authentication data of the authentication request data to an authentication server; receiving a packet containing an authentication ACK data or authentication

NAK data from the authentication server; and when the packet containing the authentication ACK data is inputted, allowing the user mobile terminal to access the home master terminal, and when the packet containing the authentication NAK data is inputted, retransmitting the packet to the user mobile terminal.

19. The method of claim 18, further comprising the steps of: comparing the ID number of the user mobile terminal contained in the authentication request data with the registered ID number; and transmitting the packet containing the authentication data to the authentication server, or a packet containing an authentication rejection data to the user mobile terminal according to the comparison result.

20. A program storage medium for storing a computer readable program which is provided to a mobile service server for connecting a user mobile terminal to a home master terminal in a mobile home network system, and which comprises the steps of: accessing the home master terminal; receiving a packet containing an authentication request data from the user mobile terminal; deciding accessibility of the user mobile terminal to the home master terminal according to the authentication request data; and connecting the user mobile terminal to the home master terminal according to the decision result.

21. The medium of claim 20, wherein the step for accessing the home master terminal comprises the steps of: receiving, at the mobile service server, an access request data from the home master terminal; confirming an access status at the mobile service server; transmitting a packet containing an access ACK data or access NAK data to the home master terminal according to the confirmation result; and transmitting the packet containing the access ACK data, and allowing communication between the mobile service server and the home master terminal.

22. The medium of claim 21 , wherein the program further comprises the steps of: receiving, at the mobile service server, an ID number of an accessible user mobile terminal from the home master terminal; and storing and registering the ID number.

23. The medium of claim 22, wherein the program further comprises the steps of: receiving, at the mobile service server, a dummy signal from the home master terminal at an interval of a predetermined time to confirm a current access status; and when the dummy signal is inputted, confirming access to the home master terminal.

24. The medium of one of claims 20 to 23, wherein the program further comprises the steps of: transmitting a packet containing an authentication data of the authentication request data to an authentication server; receiving a packet containing an authentication ACK data or authentication NAK data from the authentication server; and when the packet containing the authentication ACK data is inputted, allowing the user mobile terminal to access the home master terminal, and when the packet containing the authentication NAK data is inputted, retransmitting the packet to the user mobile terminal.

25. The medium of claim 24, wherein the program further comprises the steps of: comparing the ID number of the user mobile terminal contained in the authentication request data with the registered ID number; and transmitting the packet containing the authentication data to the authentication server, or a packet containing an authentication rejection data to the user mobile terminal according to the comparison result.

26. An authentication server of a mobile home network system, comprising: a network connection means connected to a mobile service server through a network, for transmitting and receiving a packet; a storage means for storing an authentication data; and a control means for receiving a packet containing an authentication data for access to a home master terminal transmitted to the mobile service server from the network connection means, comparing the received authentication data with the stored authentication data, generating a packet containing an authentication result data according to the comparison result, and transmitting the packet to the mobile service server through the network connection means.

27. The server of claim 26, wherein the authentication result data is one of an authentication ACK data and an authentication NAK data.

28. The server of claim 26 or 27, wherein the network connection means is connected to the home master terminal through the network, and the authentication server further comprises a registration means for receiving the packet containing the authentication data previously stored in the home master terminal through the network connection means, and storing and registering the authentication data in the storage means.

29. An authentication method for login of a mobile home network system, comprising the steps of: receiving a packet containing an authentication data for access to a home master terminal transmitted to a mobile service server by a user mobile terminal from the mobile service server; comparing the received authentication data with a registered authentication data; generating a packet containing an authentication result data according to the comparison result; and transmitting the packet to the mobile service ser er.

30. The method of claim 29, wherein the authentication result data is one of an authentication ACK data and an authentication NAK data.

31. The method of claim 29 or 30, further comprising the steps of: receiving, at the authentication server, an authentication data previously stored in the home master terminal; and storing and registering the authentication data.

32. A program storage medium for storing a computer readable program which is provided to an authentication server for authenticating access of a user mobile terminal to a home network system in a mobile home network system, and which comprises the steps of: receiving a packet containing an authentication data for access to a home master terminal transmitted to a mobile service server by the user mobile terminal from the mobile service server; comparing the received authentication data with a registered authentication data; generating a packet containing an authentication result data according to the comparison result; and transmitting the packet to the mobile service server.

33. The medium of claim 32, wherein the authentication result data is one of an authentication ACK data and an authentication NAK data.

34. The medium of claim 32 or 33, wherein the program further comprises the steps of: receiving, at the authentication server, an authentication data previously stored in the home master terminal; and storing and registering the authentication data.

35. A home master terminal of a mobile home network system, comprising: a network connection means connected to a mobile service server through a network, for transmitting and receiving a packet; and a control means for transmitting a packet containing an access request data to the mobile service server through the network connection means, receiving an access ACK data or access NAK data from the mobile service server, accessing the mobile service server when receiving the access ACK data, and retransmitting the packet containing the access request data to the mobile service server when receiving the access NAK data.

36. The terminal of claim 35, further comprising: a user interface means for receiving a data; and a storage means for storing the data.

37. The terminal of claim 36, wherein the control means stores an ID number of an accessible user mobile terminal inputted through the user interface means in the storage means, and transmits the ID number to the mobile service server through the network connection means.

38. The terminal of claim 37, wherein the control means transmits a dummy signal for confirming a current access status to the mobile service server at an interval of a predetermined time.

39. The terminal of one of claims 36 to 38, wherein the control means stores an authentication data inputted through the user interface means in the storage means, the network connection means is connected to an authentication server through the network, and the control means transmits the packet containing the authentication data to the authentication server through the network connection means and registers the authentication data.

40. A login method of a mobile home network system, comprising the steps of: transmitting a packet containing an access request data to a mobile service server; receiving a packet containing an access ACK data or access NAK data from the mobile sen/ice server; and when the packet containing the access ACK data is inputted, accessing the mobile sen/ice server, and when the packet containing the access NAK data is inputted, retransmitting the packet containing the access request data to the mobile service server.

41. The method of claim 40, further comprising a step for transmitting a previously-stored ID number of an accessible user mobile terminal to the mobile service server, after the step for connecting the home master terminal to the mobile service server.

42. The method of claim 41, further comprising a step for transmitting a dummy signal for confirming a current access status to the mobile service server at an interval of a predetermined time.

43. The method of one of claims 40 to 42, further comprising a step for transmitting a packet containing a previously-stored authentication data to an authentication server, and registering the authentication data.

44. A program storage medium for storing a computer readable program ^■ which is provided to a home master terminal for authentication of an authentication server and access to a mobile service server in a mobile home network system, and which comprises the steps of: transmitting a packet containing an access request data to the mobile service server; receiving a packet containing an access ACK data or access NAK data from the mobile sen/ice server; and when the packet containing the access ACK data is inputted, accessing the mobile service server, and when the packet containing the access NAK data is inputted, retransmitting the packet containing the access request data to the mobile service server.

45. The medium of claim 44, wherein the program further comprises a step for transmitting a previously-stored ID number of an accessible user mobile terminal to the mobile service server, after the step for connecting the home master terminal to the mobile service server.

46. The medium of claim 45, wherein the program further comprises a step for transmitting a dummy signal for confirming a current access status to the mobile service server at an interval of a predetermined time.

47. The medium of one of claims 44 to 46, wherein the program further comprises a step for transmitting a packet containing a previously-stored authentication data to the authentication server, and registering the authentication data.