KR20020074322A - Method of Auto-Configuration in Network and Remote Control for Information Appliance - Google Patents

Abstract

PURPOSE: A method for registering an NA(Network-capable Appliance) in a domain name service for configuring a network of the NA and a remote control method using the same are provided to be automatically registered in the network by automatically acquiring DNS(Domain Name Service) information and updating the DNS as an NA's address and name. CONSTITUTION: An HA(Home Agent) router(93) periodically multicasts prefix information and a DNS IPv6(Internet Protocol version 6) address as a message format to all nodes on a managed network(901). A temporary address and a DNS are configured on an NA host(902). An NA host(91) detects a duplication address by multicasting a neighbor announce message to all nodes for certifying the validity of the generated temporary IPv6 address(903). If the duplication address is not detected, a regular IPv6 address is configured(904). The NA host(91) transmits a name lookup query packet(905). The HA router(93) receives the name lookup query packet, responds to the received name lookup query packet, and transmits a lookup response packet(906). The NA host(91) configures a name for the IPv6 address(907). The NA host(91) transmits a DNS update packet including the name and the IPv6 address to a DNS server(92) for registering the DNS update packet in the DNS server(908).

Description

How to register information appliances with domain name service and remote control method for information appliances network configuration {Method of Auto-Configuration in Network and Remote Control for Information Appliance}

The present invention relates to a method of automatically registering a network-capable appliance (hereinafter referred to as NA) to a network, a remote control method using the same, and a computer-readable recording record of a program for executing the method. It is about the medium.

The prior art related to Auto Configuration based on Internet Protocol Version 6 (IPv6) illustrated as an embodiment of the present invention is a 48-bit Link Layer Address (Link Layer Address) EUI- Create an address that can be used globally by using the 64-bit extended ID of 64 (Extended Unique Identifier).

The 128-bit IPv6 address for unicast is created by combining 64-bit prefix information and 64-bit interface ID. The 64-bit prefix information is used by using information predefined by the Internet communication network management regulation or assigned from a router connected to an external network. In this case, the interface ID is identifier information assigned to the network interface card. It is created automatically using. As such, the identifier information assigned to the network interface card is a unique value worldwide because it is configured by combining the order codes assigned to each company and the order values sequentially assigned to the produced products. Therefore, this identifier information can be used to construct a unique IPv6 address worldwide. This method of automatic generation of interfaces is defined in the Internet standards RFC 2462 and RFC 2463.

However, in order to enable information appliances to act as direct Internet nodes in an IPv6-based Internet environment, the Domain Name Service (DNS), together with the method of automatically generating IPv6 addresses as described above, can be used. Information about the server should also be automatically configured. You must also register your IPv6 address and the node name in Fully Qualified Domain Name (FQDN) format with DNS. In this way, networking for complete Internet communication is completed only through configuration of own IPv6 address, DNS update of own IPv6 address, and obtaining address information of DNS. Therefore, information appliances with a networking interface require a function of DNS updating of their IPv6 address information and a function of automatically obtaining DNS information.

In addition, as a method for directly communicating between networked information appliances, a session description protocol (hereinafter referred to as SDP), which is a conventional multicast application technology, and a session initiation protocol (hereinafter referred to as SIP) Extending this service to the service location protocol (hereinafter referred to as SLP) has been proposed.

In other words, to send control commands to information appliances, we define a new SIP message format called "MESSAGE", "SUBSCRIBE" and "NOTIFY", and a device messaging protocol similar to SDP that will be included in the content area of SIP Protocol (hereinafter referred to as DMP) and Device Description Protocol (hereinafter referred to as DDP). Such information appliances control technology is performed in an application layer based on Transmission Control Protocol (TCP) / UDP (User Datagram Protocol), and SIP servers are required for communication with the outside.

However, in general information appliances, since networking is not the main function, performance may be reduced due to the addition of a remote control function through the network between information appliances, and the TCP / UDP function and the application layer in the transport layer. There is a problem that many additional addition functions such as SIP function are required.

The present invention has been proposed in order to solve the above problems, the information appliances with networking function to automatically obtain DNS information, and to update the DNS with its own address and name to be automatically registered in the network A computer readable recording medium recording a method and a program for executing the method, and a method for remotely controlling an information appliance registered in a network using the method and a computer for recording the program for executing the method. The purpose is to provide a recording medium that can be used.

1 is a configuration diagram of an embodiment of an IPv6 network-based Information Appliance (Networked Appliance) network system to which the present invention is applied.

Figure 2 is a structure diagram of one embodiment of the Internet Control Message Protocol Version 6 (hereinafter referred to as ICMPv6) based on the RFC2463 standard applied to the present invention.

3 is a diagram illustrating an embodiment of a router advertisement message format of an Internet control message protocol for version 6 based on the RFC2461 standard applied to the present invention.

Figure 4 is a structure diagram of an embodiment of the neighbor announcement message format of the Internet control message protocol for version 6 based on the RFC2461 standard applied to the present invention.

5 is a structural diagram illustrating a message format for a sender and a destination link layer address included in an option area of FIG. 3 or 4;

FIG. 6 is a structural diagram illustrating a message format for prefix information included in an option area of FIG. 3; FIG.

FIG. 7 is a structural diagram illustrating a message format for a maximum transmission unit included in an option region of FIG. 3. FIG.

8 is a structural diagram of an embodiment of DNS address information option indicating an IPv6 format of a domain name server included in the option area of FIG. 3 according to the present invention;

9 is a flow diagram of an embodiment of a method for automatically setting a name and an IPv6 address for an information appliance host according to the present invention.

10 is a structural diagram of an embodiment of a control request / response message for information appliances according to the present invention;

11 is a diagram illustrating an embodiment of control command information included in a control request / response message for information appliances according to the present invention.

* Explanation of symbols for the main parts of the drawings

91: Host 1 (NA Host) 92: Host 2 (DNS Server)

93: HA Router

In order to achieve the above object, the present invention provides a domain name service (DNS) registration method for configuring a network of information appliances, wherein the information appliance host is a prefix information from a home agent (HA) router. And a first step of receiving a domain name service address; A second step of detecting, by the information appliance host, a duplicate address using a temporary address value configured using the received prefix information, and configuring an address of the information appliance host; The information appliance host requests the home agent router for a name in the form of a fully qualified domain name (FQDN) of the home agent router by using the received DNS information, and receives the fully qualified domain of the received home agent router. A third step of setting a name of the information appliance host using a name of a name; And a fourth step in which the information appliance host updates and registers the address and name of the information appliance host in a DNS server using the address configured in the second step and the name of the information appliance host configured in the third step. Include.

In addition, the present invention relates to a domain name service (DNS) registration method for configuring a network of information appliances, wherein the home agent router configures a temporary address value so that the home agent router detects duplicate addresses. Sending a message including a domain name service address; A second step of the home agent router receiving a duplicate address detection signal of the information appliance host and transmitting a response packet when the duplicate address is detected; And a third step for the home agent router to set the name of the information appliance host by sending a name in the FQDN format of the home agent router according to a request of the information appliance host that has configured a formal address through duplicate address detection. Include.

The present invention also provides a remote control method for information appliances using a domain name service (DNS) registration method for configuring a network of information appliances, wherein the information appliance host is a home agent (HA) router. Receiving, from the first message, a message comprising the prefix information and the domain name service address; A second step of detecting, by the information appliance host, a duplicate address using a temporary address value configured using the received prefix information, and configuring an address of the information appliance host; The information appliance host requests the home agent router for a name in the form of a fully qualified domain name (FQDN) of the home agent router by using the received DNS information, and receives the fully qualified domain of the received home agent router. A third step of setting a name of the information appliance host using a name of a name; A fourth step in which the information appliance host updates and registers the address and name of the information appliance host in a DNS server by using the address configured in the second step and the name of the information appliance host configured in the third step; And a fifth step in which the information appliance host is controlled through a control message at the Internet layer.

The present invention also provides a remote control method for information appliances using a domain name service (DNS) registration method for configuring a network of information appliances, wherein the information appliances host configures a temporary address value to detect a duplicate address. A first step of the home agent router sending a message including the prefix information and the domain name service address; A second step of the home agent router receiving a duplicate address detection signal of the information appliance host and transmitting a response packet when the duplicate address is detected; A third step of the home agent router setting a name of the information appliance host by sending a name in the FQDN format of the home agent router according to a request of the information appliance host having a formal address formed by detecting a duplicate address; And a fourth step for the home agent router to be controlled by transmitting a control message at the Internet layer to the information appliance host.

On the other hand, the present invention, the home appliance (HA: Home Agent) router, the home appliance (HA) in the information appliance host having a large-capacity processor for registration of the Domain Name Service (DNS) for the network configuration of information appliances A first function of receiving, from the message, the message comprising prefix information and a domain name service address; A second function of detecting, by the information appliance host, a duplicate address using a temporary address value configured using the received prefix information, and configuring an address of the information appliance host; The information appliance host requests the home agent router for a name in the form of a fully qualified domain name (FQDN) of the home agent router by using the received DNS information, and receives the fully qualified domain of the received home agent router. A third function of setting a name of the information appliance host using a name in the form of Name); And a fourth, in which the information appliance host updates and registers the address and name of the information appliance host in a DNS server using the address configured by the second function and the name of the information appliance host configured by the third function. A computer readable recording medium having recorded thereon a program for realizing the function is provided.

In addition, the present invention, in the information appliance host having a large processor for the registration of the domain name service (DNS: Domian Name Service) for the configuration of the information appliance, the information appliance host configures a temporary address value to detect duplicate addresses A first function for the home agent router to send a message including the prefix information and the domain name service address; A second function of the home agent router receiving a duplicate address detection signal of the information appliance host and transmitting a response packet when the duplicate address is detected; And a third function of causing the home agent router to send a name in the FQDN format of the home agent router in response to a request of the information appliance host configured to form a formal address through duplicate address detection to set the name of the information appliance host. A computer readable recording medium having recorded thereon a program for realization is provided.

In addition, the present invention, for the remote control through the network configuration of the information appliance, the information appliance host having a processor, the information appliance host from the home agent (HA: Home Agent) router, prefix information and domain name service address A first function of receiving a message comprising; A second function of detecting, by the information appliance host, a duplicate address using a temporary address value configured using the received prefix information, and configuring an address of the information appliance host; The information appliance host requests the home agent router for a name in the form of a fully qualified domain name (FQDN) of the home agent router by using the received DNS information, and receives the fully qualified domain of the received home agent router. A third function of setting a name of the information appliance host using a name in the form of Name); A fourth function, wherein the information appliance host updates and registers the address and name of the information appliance host in a DNS server by using the address configured by the second function and the name of the information appliance host configured by the third function. ; And a computer readable recording medium having recorded thereon a program for realizing a fifth function controlled by the information appliance host through a control message at the Internet layer.

In addition, the present invention provides a home agent router with prefix information so that the home appliance router detects a duplicate address by configuring a temporary address value in the home appliance host having a processor for remote control through a network configuration of the home appliance. A first function of sending a message comprising a domain name service address; A second function of the home agent router receiving a duplicate address detection signal of the information appliance host and transmitting a response packet when the duplicate address is detected; A third function of causing the home agent router to send a name in the FQDN format of the home agent router in response to a request of the information appliance host configured to form a formal address through duplicate address detection to set the name of the information appliance host; And a computer-readable recording medium having recorded thereon a program for realizing a fourth function for the home agent router to transmit and control a control message at the Internet layer to the information appliance host.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a configuration diagram of an embodiment of an IPv6 network-based Information Appliance (Networked Appliance) network system to which the present invention is applied.

As shown in FIG. 1, an IPv6 network-based Networked Appliance network system includes an intra-home 11 environment including a home network 101, an office network 102, and a mobile network ( It is divided into an Inter-Home (12) environment, including 103, and each environment is connected through a Home Agent (HA) router 104.

In brief, the intra-home (11) environment consists of a lower 64-bit router configured from a link-layer address configured by an Internet host with a network function according to the existing automatic network configuration scheme under the 128-bit IPv6 unicast address scheme. Addresses are automatically generated by the upper 64-bits received from or configured using default prefixes, and the 128-bit addresses created allow for effective networking in the home.

Meanwhile, in the inter-home 12 environment, an information appliance having a network function by acquiring the prefix information from the home agent router 104 in an IPv6 environment is referred to as a networked appliance (NA). It is constructed by obtaining an IPv6 address of 105 and a fully qualified domain name (FQDN) format and automatically registering it with the DNS server 106, thereby enabling the home network 101, the office network 102, or the mobile network. Allow 103 to be interconnected.

FIG. 2 is a diagram illustrating an embodiment of an Internet Control Message Protocol Version 6 (ICMPv6) based on the RFC2463 standard applied to the present invention, and FIG. 3 is applied to the present invention. One embodiment structure diagram of the Router Announce message format of the Internet Control Message Protocol for Version 6 based on the RFC2461 standard.

In detail, the protocol shown in FIG. 2 includes a format field of 8 bits, a code field of 8 bits, a checksum field of 16 bits, an unused field of 32 bits, and a message body.

Here, an 8-bit type field indicates the format of the message, and its value determines the format of the remaining data. The 8-bit Code field is a value that depends on the message format and is used to form an additional level of configuration of the message. The 16-bit Checksum field is used to detect any invalid data between the ICMPv6 message and the respective parts of the IPv6 header. The 32-bit unused field is an unused field in all code values. The 32-bit unused field is initialized to 0 at the sender and is ignored at the receiver. The message body contains a message to be transmitted.

Looking at the message format shown in FIG. 3 in detail, the value of the format field is 134 and the value of the code field is zero. The current hop limit has an 8-bit unsigned integer value, the default value of which is located in the hop count field in the IP header of the transmitted IP packet. If the value is 0, it means that it is not specified by the current router.

M, O, and H are values defined in existing IPv6 packets and are 1-bit flags. Therefore, it has a value of 0 or 1. A is a flag newly defined to achieve the object of the present invention, and is used in the same form as other flags. And a 4-bit reserved field.

Where M stands for Managed Address Configuration, and a value of 1 means that the state protocol uses address autoconfiguration in addition to addresses that are automatically configured using stateless address autoconfiguration. In order to configure this address, a DHCP (Dynamic Host Configuration Protocol) server needs help.

In addition, O is a flag indicating another stateful configuration, and a value of 1 indicates that additional information for address autoconfiguration must be obtained from another server.

In addition, H is a flag indicating whether the router operates as a home agent (HA) in a mobile IP environment, and a value of 1 indicates that the router operates as a home agent (HA) in a wireless IP environment. . In other words, it basically informs the host system that the wireless IP communication environment is located.

A is an extended flag to be used to refer to an appliance. If the value is set to 1, A indicates to the nodes that the router is operating as an information-only HA. At this time, if the A flag is set to 1, the DNS address information option of FIG. 8 must be included.

The router survival period field has a 16-bit unsigned integer value, which indicates the number of seconds, and is associated with the usability as the default router. In other words, if the router lifetime is zero, it means that the router is not the default router and is not in the default router list. In more detail, the router lifetime applies only to the availability of the router as the default router, and has no effect on the information contained in other message fields or options.

The available time period field has a 32-bit unsigned integer value, and the value has a millisecond unit. Here, the available time period is the time taken to assume that the neighbor node is available after the node has received the availability confirmation. Thus, a value of 0 means that it is not specified by the current router.

The retransmission time period field has a 32-bit unsigned integer value and has a millisecond unit. Here, the retransmission time period is a time taken to retransmit the derivation message of the neighbor node. Thus, a value of 0 means that it is not specified by the current router.

Available options included in the option field include a sender link layer address indicating a link layer address of an interface to which a router advertisement is sent, and a maximum transmission unit (MTU) for determining a maximum transmission unit for links having a variable maximum transmission unit. Maximum Transfer Unit), prefix information used for on-link or automatic address generation, and DNS IPv6 address.

FIG. 4 is a diagram illustrating an embodiment of a neighbor advertisement message format of an Internet control message protocol for version 6 based on the RFC2461 standard applied to the present invention.

Looking at the message format shown in Figure 4 in detail as follows.

First, a format field composed of 8 bits has a value of 136, and a code field composed of 8 bits also has a value of 0. And a checksum field composed of 16 bits. And R, O and S flags and 29 bit reserved field.

Here, R is a 1-bit router flag. If the value is set to 1, it indicates that the router is a router. And, S is a request flag consisting of 1 bit. If the value is 1, an advertisement is sent in response to a request of a neighboring node from a destination address. O is a 1-bit override flag. If the value is 1, it means to ignore the existing value.

5 to 8 are format structural diagrams of respective information included in the option area of FIG. 3 according to an embodiment of the present invention. 5 to 7 are formats defined in the existing RFC2461 standard, and FIG. 8 is a format newly defined for applying the present invention. Hereinafter, the format defined in the existing RFC2461 standard of FIGS. 5 to 7 will be described in detail.

FIG. 5 is a structural diagram illustrating a message format for a sender and a destination link layer address included in an option area of FIG. 3 or 4.

As shown in Fig. 5, the sender link layer address option includes an 8-bit format field, an 8-bit length value field, and a 16-bit link layer address field. If the format field is set to 2, the destination link layer address is displayed.

FIG. 6 is a structural diagram illustrating a message format for prefix information included in an option region of FIG. 3. FIG.

As shown in FIG. 6, the prefix information format includes a format field of 8 bits having a value of 3, a length value field of 8 bits having a value of 4, and a prefix length field of 8 bits. It also includes a flag consisting of 1 bit each of L, A, and R, a reserved 1 field of 5 bits, an effective survival time of 32 bits, a preferred survival time of 32 bits, and a reserved 2 field of 32 bits, and prefix information.

In detail, L is a 1-bit on-link flag. When L is 1, the values placed in the prefix region may be used to find a valid path. This means that prefixed IPv6 addresses are on-link, that is, they are bound to a valid host.

In addition, A is an automatic address configuration flag consisting of 1 bit. If the value of A is 1, it means that the address is configured in an automatic configuration method unlike the M flag. This means configuring the address without the help of a server like DHCP.

And, R is a router flag consisting of 1 bit. If the value is set to 1, it indicates that it is a router. The reserved 1 field of 5 bits is an unused field, and the transmitting side is initialized to 0 and the receiving side is ignored.

The valid survival time has an unsigned integer value composed of 32 bits, and indicates the length of time valid for the purpose of the on-link determination, and the unit is sec.

The preferred survival time is a 32-bit unsigned integer value, which means that the address generated from the prefix through stateless automatic address configuration remains in the preferred state, and the unit is seconds (Sec). )

The reserved 2 field of 32 bits is an unused field, and the transmitting side is initialized to 0 and ignored on the receiving side.

The prefix indicates an IP address or a prefix of the IP address. In this case, since the prefix length field indicates the number of valid leading bits in the prefix, the prefix content after the value set in the prefix length field is regarded as a reserved field, and the transmitting side is initialized to 0 and the receiving side is ignored. That is, only prefixes up to a predetermined prefix length are recognized in the prefix length field.

FIG. 7 is a structural diagram illustrating a message format for a maximum transmission unit included in an option region of FIG. 3.

As shown in FIG. 7, it includes a format field composed of 8 bits having a value of 5, a length value field composed of 8 bits having a value of 4, a reserved field composed of 16 bits, and a maximum transmission unit (MTU) field composed of 32 bits. .

Here, the maximum transmission unit field indicates the maximum transmission unit required for the link.

9 is a flowchart illustrating a method for automatically setting a name and an IPv6 address for an information appliance host according to the present invention.

In order to establish the inter-home environment, an IPv6 address and a fully qualified domain name (FQDN) name of each information appliance must be obtained. For this, the process illustrated in FIG. 9 is performed.

First, the HA router 93 periodically multicasts the prefix information and the DNS IPv6 address to a message format as shown in FIG. 3 based on FIG. 2 to all nodes on the network managed by the HA router 93 ( 901). At this time, it is assumed that the DNS IPv6 address is stored in the HA router 93.

The Router Announce message is multicasted upon request by the hosts 91 and 92 or at regular time periods (901). In this case, the options defined in the existing RFC2461 standard as shown in FIGS. 5 to 7 are included. In addition, the present invention defines and transmits a new option as shown in FIG. 8 in addition to the above-described option values of FIGS.

FIG. 8 is a structural diagram of an embodiment of DNS address information option indicating an IPv6 format of a domain name server included in the option area of FIG. 3 according to the present invention.

As shown in FIG. 8, it includes a format field of 8 bits, a length value field of 8 bits, a prefix length field of 8 bits, a reservation field of 40 bits, and a DNS IPv6 address field of 128 bits.

In detail, the format field has a value of 6 by allocating the following values except for the five option types defined previously. The length value field means the total length, and is defined as a value of 3 based on 8 bits, so the total length is 24 bits. In this case, since the length value is always constant, the length area may not be required. However, because all option message formats previously defined take the form of TLV (Type, Length, Value), the length field is defined for uniformity. The prefix length field consists of 8 bits, and its value indicates the length of the prefix portion of the DNS IPv6 address included in the last field. The reserved field is a field which is not used as a reserved portion for future use, and is initialized to 0 on the transmitting side and ignored on the receiving side. The DNS IPv6 address field consists of 128 bits and represents DNS information stored in the HA router.

As a next procedure, configure a temporary address and DNS on the NA host 91 (902). Here, the step of configuring the temporary address is generated according to the existing Internet standard RFC2462 which receives the multicast prefix information from the HA router 93 and automatically configures it based on the link layer address of the NA host 91. In addition, DNS configuration on the NA host 91 is made by creating a DNS file (for example, resolv.conf on Unix) in a router advertisement message according to DNS information received by the newly expanded DNS IPv6 address option.

Next, as a procedure, duplicate address detection (hereinafter referred to as DAD) is performed (903).

Duplicate address detection is based on the Internet standards RFC2462 and RFC2461, and multicasts the neighbor advertisement message shown in FIG. 4 to all nodes to validate the temporary IPv6 address generated by the NA host 91. As a result, a duplicate address can be detected (903). At this time, among the nodes receiving the neighbor advertisement message, a node having a duplicate address can detect the duplicate address by sending a response message.

As a next procedure, if a duplicate address is not detected through the duplicate address detection process, a formal IPv6 address is configured (904). That is, this process 904 of configuring a regular IPv6 address is performed when there is no response packet transmission for the neighbor advertisement message from neighbor nodes in the previous duplicate address detection process 903, and the NA host 91 performs the 902 operation. The temporary IPv6 address generated in the process is recognized and stored as the only official IPv6 address for the NA host 91 (904).

On the other hand, when neighboring nodes transmit a duplicate address detection response packet indicating that they are already using a temporary IPv6 address, the NA host 91 requests a new IPv6 address from the HA router 93 to configure a new address. do. This type of addressing is called stateful autoconfiguration, which is possible only if the host and router provide the same functionality as DHCPv6.

When this process is completed, communication between information appliances in the intra-home environment is possible. In addition, since DNS information on the NA host 91 is set, it is also possible to connect to the external network from the NA host 91 on the home network. However, since the NA host 91 is not registered on the DNS system, the host on the external network cannot access the system on the home network.

Therefore, in order for the host on the external network to be accessible to the system on the home network, the NA host 91 must register its DNS address on the DNS system. To this end, the NA host 91 first needs to look up a name lookup ( Name Lookup) transmits a query packet (905). That is, the NA host 91 requests the HA router 93 in the FQDN format in order to determine its unique FQDN format name. In other words, the NA host 91 informs the IPv6 address of the HA router 93 and requests the name of the HA for this.

Here, the IPv6 address of the HA router 93 is obtained through the neighbor advertisement message of FIG. 4, which is a link of the HA router 93 obtained by the NA host 91 through the sender link layer address option of the router advertisement message. It is obtained by making a request to the HA router 93 using the layer address.

As a next procedure, the HA router 93, which has received the name lookup query packet in the process, transmits a name lookup response packet in response thereto (906). That is, the HA router 93 informs the NA host 91 of the name of the FQDN format of the HA router 93 in the form of a name lookup response packet.

As a next procedure, NA host 91 constructs a name for an IPv6 address (907). The present invention uses the name of the FQDN format of the HA router 93 obtained from the transmitted name lookup response packet to construct a name for the IPv6 address of the NA host 91. That is, domain information is obtained through the FQDN format name of the HA router 93 obtained in the above process, and the name of the NA host 91 is configured using the domain information.

For example, if the name of the HA router 93 is ha.homenetwork.co.kr, the name of the NA host 91 is na.homenetwork.co.kr. In this case, the NA host 91 must have a name that indicates itself, such as na in advance. That is, the NA host 91 having its name constructs its FQDN name using the FQDN name of the HA router 93. Incidentally, a method of uniquely referring to information electronic devices should be provided by an international name definition authority (an agency such as IANA).

As a next procedure, the NA host 91 transmits and registers a DNS update packet including the name and the IPv6 address of the NA host to the DNS server 92 (step 908). This step follows a dynamic DNS update procedure. Here, the dynamic DNS update procedure is not yet determined by the Internet standard, but is an international standardization finishing stage. In addition, the method of handling the case where there is an information appliances already registered in DNS using the same name should be standardized. That is, a solution for the case where there are many same information appliances in the same network should be presented.

After the NA host 91 transmits the DNS packet to the DNS server 92 and registers the address, the DNS server 92 has the IPv6 address and name for the NA host 91. Connections originating from nodes in the network, ie inter-home environments, are also possible.

By the registration of the NA host 91 to the DNS server 92 as described above, the inter-home control function by the node located in the external network as well as the information on the intra-home becomes possible. Here, the nodes located in the external network may be a work PC in an office as shown in FIG. 1 or may be a mobile terminal used in a mobile Internet environment. Of course, in order to be used in the mobile environment, the HA router 93 must support the IPv6-based mobile Internet.

On the other hand, under the environment in which networking for information appliances is configured as described above, the present invention defines a new message format that can control the NA host 91 using an IPv6 address. The defined new message format adds a new message format to be used in the existing ICMPv6, and is provided at the Internet layer of the IPv6 environment.

10 is a structural diagram of an embodiment of a control request / response message for information appliances according to the present invention.

As shown in FIG. 10, a format field of 8 bits, a code field of 8 bits, a checksum field of 16 bits, a reservation field of 32 bits, and an option field are included. The options include the sender link layer. Address, destination link layer address, and control command information.

According to a preferred embodiment of the control request / response message proposed by the present invention, the value of the format field is assigned to the request / response message as 142/143, which is not used among the existing ICMPv6 message formats. However, even if the value of the format field is not 142/143, any value can be used except for a previously defined value.

In addition, four code values currently defined may be used as the code field as defined in Table 1 below. The value of such a code field may be further defined and used according to applications of the application layer.

In addition, the 16-bit checksum field includes a checksum value for the control request / response message and is the same as that calculated in the ICMPv6 request messages. The 32-bit reserved field is an unused field and is initialized to 0 on the transmitting side and ignored on the receiving side.

And, option field includes different option types according to code value as defined in <Table 1>. Each option type is control command information, sender link layer address, and destination link layer address.

The control command message shown in FIG. 10 may be delivered through a multicast address, or may be delivered in a unicast to a specific information appliance host.

Code value name Option used 0 Command (COMMAND) Control command information One REGISTER Sender Link Layer Address 2 Termination (BYE) Sender Link Layer Address 3 Invite (INVITE) Destination Link Layer Address 4 to 255 RESERVED

Table 1 is a table showing an option region format used according to a code region value in FIG. 10.

The name of the option and the role used are divided according to the value included in the code field of the control command message of FIG. 10. As shown in Fig. 10, if the value of the code field is 0, the control command information option is used, and the value of the code field from 1 to 3 is the sender's link layer address or the destination link layer address, and the format thereof is shown in the above figure. Follow the schematic diagram defined in 5.

Also, if the value of the code field is 4 to 255, this value is reserved for future use and is not used in the embodiment of the present invention.

11 is a diagram illustrating an embodiment of control command information included in a control request / response message for information appliances according to the present invention.

The control command information is information for controlling the information appliance (NA host). When the code field of the control request / response message shown in FIG. 10 is 0, the control command information is included in the option area of the control request / response message. At this time, since the format of the control command information option has not been defined in the prior art, the present invention proposes a structure as shown in FIG.

The control command information structure proposed by the present invention is basically composed of TLV (Type, Length, Value) format, a format field of 8 bits, a length value field of 8 bits, a reservation field of 16 bits, and an information appliance ID field of 16 bits. And a control command field consisting of 16 bits.

Here, the value of the format field consisting of 8 bits uses 7, which is not used previously. The length value field consists of 8 bits, and the value is always 1. The 16-bit reserved field is reserved for future use and is not currently used.

In addition, the information appliance ID field has a value of 16 bits, and is an identifier used to uniquely refer to the information appliance for the application used in the application layer. In order to uniquely distinguish the applications of the information appliance, It should be defined.

The control command field has a 16-bit value and is a value used to transmit a control command to information appliances. The values in this field are used differently depending on the information appliances applications referred to by the information appliance ID field values. Therefore, it should be defined differently according to the function of the information appliances applications.

As described above, the method of the present invention may be implemented as a program and stored in a recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.) in a computer-readable form.

The present invention described above has been exemplified for an IPv6-based configuration as a preferred embodiment. However, the scope of the present invention is not limited to the drawings and examples shown herein, it is common knowledge in the art that various substitutions, modifications and changes can be made within the scope without departing from the technical spirit of the present invention. It will be apparent to those who have

The present invention as described above, by extending the existing automatic address configuration method that can be used only in the intra-home environment, by assigning and registering an address for each information appliances, access to the home appliances from the external network to the home network This has the effect of providing an accessible environment.

In addition, the present invention, by defining a control message for controlling the information appliances even in the remote location based on the generated IPv6 address, it is effective to manage and control the information appliances host in various application environments, such as a mobile Internet-based mobile terminal have.

In addition, a method of controlling an information appliance host using a protocol such as SIP at the application layer has been proposed, but a dedicated server for supporting SIP is required and a TCP / IP based SIP must be implemented on the host. Basically, information appliances hosts are diverse, and sometimes it is difficult to implement SIP on top of TCP / IP stack due to system requirements such as memory and buffers. Therefore, the present invention can be implemented in the Internet layer rather than the application layer, and can have a great effect on system processing speed.

Claims (15)

In the domain name service (DNS: registration method) for information network configuration, A first step of the home appliance host receiving a message including prefix information and a domain name service address from a home agent (HA) router; A second step of detecting, by the information appliance host, a duplicate address using a temporary address value configured using the received prefix information, and configuring an address of the information appliance host; The information appliance host requests the home agent router for a name in the form of a fully qualified domain name (FQDN) of the home agent router by using the received DNS information, and receives the fully qualified domain of the received home agent router. A third step of setting a name of the information appliance host using a name of a name; And A fourth step in which the information appliance host updates and registers the address and name of the information appliance host in a DNS server by using the address configured in the second step and the name of the information appliance host configured in the third step. Domain name service registration method for a home appliance network configuration comprising a. The method of claim 1, The second step, A fifth step of receiving, by the information appliance host, prefix information and configuring a temporary IPv6 address for information appliances; A sixth step of the information appliance host multicasting to all nodes managed by the home agent router to validate the temporary IPv6 address generated in the fifth step; And A seventh step of configuring the temporary IPv6 address as a formal IPv6 address when there is no response to the sixth step of multicast; Domain name service registration method for a home appliance network configuration comprising a. The method according to claim 1 or 2, The third step, An eighth step of the information appliance host generating or updating a DNS file of the information appliance host by using the received DNS information; A ninth step of the information appliance host requesting the HA router for the home agent router name in a fully qualified domain name (FQDN) form to determine its own name; A tenth step of receiving, by the information appliance host, the home agent router name in a fully qualified domain name (FQDN) format in response to the home agent router in response to the request of the ninth step; An eleventh step of configuring, by the information appliance host, the name of the information appliance host using the name of the home agent router received in the tenth step; Domain name service registration method for a home appliance network configuration comprising a. The method of claim 1, The A (Appliance) flag indicating that the home agent for the home network is being used for the protocol of the message received in the first step is used. If the home agent for the home network is used, DNS address information is provided in the option area of the received message. A method of registering a domain name service for a home appliance network configuration, characterized in that the option must be included. The method of claim 4, wherein The DNS address information option includes an information appliance comprising an 8-bit format region, an 8-bit length value region, an 8-bit prefix length region, a 40-bit reserved region, and a 128-bit DNS IPv6 address region. How to register a domain name service for network configuration. In the domain name service (DNS: registration method) for information network configuration, A first step of the home agent router sending a message including the prefix information and the domain name service address so that the information appliance host configures a temporary address value to detect a duplicate address; A second step of the home agent router receiving a duplicate address detection signal of the information appliance host and transmitting a response packet when the duplicate address is detected; And A third step of causing the home agent router to send a name in the FQDN format of the home agent router in response to a request of the information appliance host configured to form a formal address through duplicate address detection to set the name of the information appliance host; Domain name service registration method for a home appliance network configuration comprising a. In the remote control method of information appliances using a domain name service (DNS: Domian NameService) registration method for the network configuration of information appliances, A first step of the home appliance host receiving a message including prefix information and a domain name service address from a home agent (HA) router; A second step of detecting, by the information appliance host, a duplicate address using a temporary address value configured using the received prefix information, and configuring an address of the information appliance host; The information appliance host requests the home agent router for a name in the form of a fully qualified domain name (FQDN) of the home agent router by using the received DNS information, and receives the fully qualified domain of the received home agent router. A third step of setting a name of the information appliance host using a name of a name; A fourth step in which the information appliance host updates and registers the address and name of the information appliance host in a DNS server by using the address configured in the second step and the name of the information appliance host configured in the third step; And A fifth step in which the information appliance host is controlled through a control message at the Internet layer; Remote control method of information appliances including a. In the remote control method of information appliances using a domain name service (DNS) registration method for the network configuration of information appliances, A first step of the home agent router sending a message including the prefix information and the domain name service address so that the information appliance host configures a temporary address value to detect a duplicate address; A second step of the home agent router receiving a duplicate address detection signal of the information appliance host and transmitting a response packet when the duplicate address is detected; A third step of the home agent router setting a name of the information appliance host by sending a name in the FQDN format of the home agent router according to a request of the information appliance host having a formal address formed by detecting a duplicate address; And A fourth step for the home agent router to be controlled by transmitting a control message at the Internet layer to the information appliance host Remote control method of information appliances including a. The method according to claim 7 or 8, The control message comprises a format area of 8 bits, a code value area of 8 bits, a checksum area of 16 bits, and an optional area of variable length. The method of claim 9, The variable length option area is And one of control command information, a sender link layer address, and a destination link layer address is assigned according to a code value of the code value area. The method of claim 10, The control command information option comprises a format area of 8 bits, a length value area of 8 bits, an information appliance ID area of 16 bits, and a control command area of 16 bits. In the information appliance host equipped with a large capacity processor to register the Domain Name Service (DNS) for information network configuration, A first function of receiving, by an information appliance host, a message including prefix information and a domain name service address from a Home Agent (HA) router; A second function of detecting, by the information appliance host, a duplicate address using a temporary address value configured using the received prefix information, and configuring an address of the information appliance host; The information appliance host requests the home agent router for a name in the form of a fully qualified domain name (FQDN) of the home agent router by using the received DNS information, and receives the fully qualified domain of the received home agent router. A third function of setting a name of the information appliance host using a name in the form of Name); And A fourth function, wherein the information appliance host updates and registers the address and name of the information appliance host in a DNS server by using the address configured by the second function and the name of the information appliance host configured by the third function. A computer-readable recording medium having recorded thereon a program for realizing this. In the information appliance host equipped with a large capacity processor to register the Domain Name Service (DNS) for information network configuration, A first function for the home agent router to send a message including the prefix information and the domain name service address so that the information appliance host configures a temporary address value to detect a duplicate address; A second function of the home agent router receiving a duplicate address detection signal of the information appliance host and transmitting a response packet when the duplicate address is detected; And A third function of causing the home agent router to send a name in the FQDN form of the home agent router in response to a request of the information appliance host that has configured a formal address through duplicate address detection to set the name of the information appliance host A computer-readable recording medium having recorded thereon a program for realizing this. For remote control through the network configuration of information appliances, to an information appliance host having a processor, A first function of receiving, by an information appliance host, a message including prefix information and a domain name service address from a Home Agent (HA) router; A second function of detecting, by the information appliance host, a duplicate address using a temporary address value configured using the received prefix information, and configuring an address of the information appliance host; The information appliance host requests the home agent router for a name in the form of a fully qualified domain name (FQDN) of the home agent router by using the received DNS information, and receives the fully qualified domain of the received home agent router. A third function of setting a name of the information appliance host using a name in the form of Name); A fourth function, wherein the information appliance host updates and registers the address and name of the information appliance host in a DNS server by using the address configured by the second function and the name of the information appliance host configured by the third function. ; And A fifth function in which the information appliance host is controlled through a control message at the Internet layer A computer-readable recording medium having recorded thereon a program for realizing this. For remote control through the network configuration of information appliances, to an information appliance host having a processor, A first function for the home agent router to send a message including the prefix information and the domain name service address so that the information appliance host configures a temporary address value to detect a duplicate address; A second function of the home agent router receiving a duplicate address detection signal of the information appliance host and transmitting a response packet when the duplicate address is detected; A third function of causing the home agent router to send a name in the FQDN format of the home agent router in response to a request of the information appliance host configured to form a formal address through duplicate address detection to set the name of the information appliance host; And A fourth function for the home agent router to be controlled by transmitting a control message at the Internet layer to the information appliance host A computer-readable recording medium having recorded thereon a program for realizing this.