JP2004201276A - Terminal-to-terminal communication connection control method using ip network - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a terminal-to-terminal communication connection control system with which: (1) a terminal connected to a wireless LAN can communicate with another terminal by connecting to an IP network and a mobile communication network, etc.; (2) terminal-to-terminal communication is continued via the IP network while the terminal moves a geographic location; (3) a communication path setting between two terminals can be permitted or refused; and (4) an IP address unregistered IP packet is prevented from flowing in the network. <P>SOLUTION: (1) A terminal registration table is set in the wireless LAN to perform certification proceeding to the terminal inside the wireless LAN. (2) Two or more telephone management servers 906-4 to 9094 are installed inside the IP network 900X, to perform a series of call connection control procedure for changing the geographic location of a telephone device. (3) A terminal address-related information is registered in the server in the IP network. Permission of setting the communication path between two terminals is decided by using a registered information in the server. (4) An IP packet whose transmission source is unknown is prevented from flowing in the IP network. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

  The present invention enables a terminal connected to an IP network (also referred to as an IP communication network) and a wireless LAN to connect to the IP network and communicate with other terminals. Continuing via the IP network while moving its geographical position, establishes a communication path between any terminals whose address information is registered based on a user request, and allows a large amount of illegal IP packets to flow into the IP network. The present invention relates to an inter-terminal communication connection control method using an IP network to be prevented.

  As prior art related to the present invention, there are Japanese Patent No. 3084681 (Patent Document 1) by the present applicant and Japanese Patent Application No. 2002-164497 (Patent Document 2) by the present applicant.

Patent Literature 1 discloses a method of performing IP encapsulation, a method of providing a telephone number to a domain name server to obtain an IP address and performing telephone communication in an integrated information communication system that is an IP packet transfer network employing IP encapsulation. And so on.
<< Encapsulation Technique (Patent Document 1) >>
In FIG. 144, 1 is an IP network, 2 and 3 are network node devices, 5 to 8 are LANs, 10 and 11 are terminals, and 15 (FIG. 145) and 16 (FIG. 146) are device control tables. Terminal 10 has address "E1" and terminal 11 has address "E2".

The external IP packet 17 having the source address “E1” and the destination address “E2” is input to the network node device 2 via the communication line 12 via the logical terminal at the end of the communication line. Here, the internal address "I1" is given to the input-side logic terminal. When the external IP packet 17 is input, the network node device 2 records (capsule control record) satisfying the following expression (1) from a plurality of records in the device control table 15 (provided that the internal address “I1” is (Including). Here, AND represents a logical operation AND, and “E1” and “E2” are external addresses included in the external IP packet 17. “M1, N1, M2, N2” are included in the record in the device control table 15.

(("E1"
AND "M1") = "N1") AND ("E2" AND "M2")
= "N2"))… (1)

The internal packet 18 is transferred within the IP network 1 and, when it reaches the network node device 3, is restored under the management of the device control table 16 to become an external packet 19, and the external packet 19 is given an internal address "I2". Via the logical terminal at the end of the communication line 14 and then to the terminal 11 via the communication line 14.

When the destination address "E2" of the external packet changes, the above expression (1) is checked for other records in the device control table 15, and the destination of the internal packet 18 changes (switching function of the network node device). In the present invention, the device control table is also called a capsule control table, and the record of the device control table is also called a capsule control record or a communication record.
Japanese Patent No. 3084681 Japanese Patent Application No. 2002-164497

  In order to implement the inter-terminal communication connection control method using an IP network, (1) a terminal connected to a wireless LAN communicates with another terminal via an IP network or a mobile communication network; Continuing terminal-to-terminal communication while moving the geographical position of the mobile telephone, wireless terminal, or portable audio / video device to be connected; (3) a communication path between two terminals between any terminals connected to the IP network There is no terminal-to-terminal communication connection control system using an IP network that permits setting and denies communication path setting. (4) There is no appropriate method for preventing network congestion and DOS attacks caused by a large amount of IP packets including unregistered IP addresses flowing into an IP network. The present invention aims to solve these unsolved problems.

  According to the present invention, (1) an authentication server is installed in an IP network so that a terminal communicates with another telephone, a wireless terminal, and a voice / image device via a wireless LAN, an IP network, and a mobile communication network; This is achieved by performing an authentication procedure for an internal terminal. More specifically, the wireless LAN connects from the media router 1 in the wireless LAN to one of the network node devices of the IP network via a communication line, the wireless LAN includes the terminal 1, and the terminal 2 passes through the media router 2. Then, it is connected to one of the network node devices of the IP network via a communication line, a terminal registration table is set inside the media router 1, and when connecting from the terminal 1 to the terminal 2, the terminal 1 A communication connection control including a procedure for obtaining a transmission permission under management is performed, and when connecting from the terminal 2 to the terminal 1, a communication connection including a procedure for the terminal 1 obtaining a reception permission based on the management of the terminal registration table. By enabling control, the terminal 1 and the terminal 2 can communicate with each other via the wireless LAN and the IP network or the mobile communication network based on the management of the terminal registration table.

  As another implementation method, the terminal registration table is not installed inside the media router 1 but is installed inside the authenticated telephone number server, and the media router 1 calls the authenticated telephone number server and uses the terminal registration table. To

Further, (2) management of two or more telephones installed inside the IP network so that communication between terminals can be continued while moving the geographical position of the mobile telephone or portable audio / video device connected to the IP network. This is achieved by implementing a series of call connection control procedures between the servers to change the geographical location of the mobile telephone. More specifically, the IP network performs communication between mobile telephones between the mobile telephone 1 and the mobile telephone 2 and telephone communication between the mobile telephone and the fixed telephone via the IP network. During this, handover communication is performed in which at least the wireless base station is changed and telephone communication is continued. When the handover communication is performed, the internal address, which is the position information of the telephone after the movement, is rewritten as a record in the mobile telephone registration table inside the telephone number server dedicated to the mobile telephone. A mobile telephone 1 within a range of the wireless communication area 1 of the wireless base station 1 passes through a mobile telephone 1-a wireless base station 1-a terminal gateway 1-a terminal gateway 2-a wireless base station 2-a mobile telephone 2 or a fixed telephone 2. While continuing telephone communication with the mobile telephone 2 or the fixed telephone 2, the mobile telephone 1 moves to a geographical position where it communicates with the radio base station 3 managed by the terminating gateway 3, that is, the mobile telephone 1-the radio base station 3 -Terminal gateway 3 -Terminal gateway 2 -Wireless base station 2 -Phone communication continuation method based on a method of continuing telephone communication with the mobile telephone 2 or fixed telephone 2 via the mobile telephone 2 or fixed telephone 2 (handover) It is.
(3) The terminal location identifier of the terminal, the external address, and the internal address for connecting the terminal to the IP network are registered in a domain name server in the IP network, and the terminal is transmitted to the domain name server in response to a request from one terminal. The terminal location identifiers of the terminal 1 and the terminal 2 are presented, address information (external address and internal address) related to the terminal 1 and the terminal 2 is obtained, and the communication record 1 is set in the network node device 1 on the terminal 1 side. At the same time, a communication record 2 is set in the network node device 2 on the terminal 2 side, so that IP packets can be transmitted and received between the terminal 1 and the terminal 2. Also, in response to a request from the terminal 1 or the terminal 2, the set communication record 1 and communication record 2 are deleted.
(4) The IP address of the terminal is registered in the communication line connection unit of the IP network, and when the communication line connection unit detects an IP packet including an unregistered IP address as a source address, the IP packet is discarded. An unnecessary IP packet is prevented from flowing into the IP network, and communication congestion in the IP network is prevented.

  According to the present invention, a terminal including a telephone number and an IP address registered in a telephone number server in an IP network so that a terminal connected to a wireless LAN can connect to an IP network and communicate with another terminal. A registration table is installed in a media router in a wireless LAN, and an authentication procedure for terminals in the wireless LAN is performed to realize a method for controlling a communication connection control between terminals using an IP network. Further, in order to continue communication between terminals via the IP network while moving the geographical positions of the mobile telephones, wireless terminals, and audio / video devices connected to the IP network, two or more telephone management servers are provided in the IP network. It implements a series of call connection control procedures for installing and changing the geographical location of the telephone to realize a method for solving a terminal-to-terminal communication connection control method using an IP network.

  Further, between any terminals connected to the IP network, a communication path setting between the two terminals can be permitted and a communication path setting can be rejected, so as to provide terminal connection communication control systems using the IP network. The terminal address-related information is registered in a server in the IP network, and permission for setting a communication path between the two terminals is determined using the registration information in the server. A method to solve the control method is realized.

  In addition, a method is implemented in which a terminal IP address is registered in an IP network to prevent an IP address unregistered IP packet from flowing into the IP network.

  The present invention further includes an IP encapsulation technique disclosed in Patent Document 1, a method of acquiring an IP address using a telephone number as a domain name, a method of implementing a fixed telephone and a mobile telephone disclosed in Patent Document 2, and the like. By introducing a new method, (1) an IP network in which a mobile telephone, a wireless terminal, and a voice image device communicate with another telephone and a voice image device via a wireless LAN, an IP network, and a mobile communication network. Terminal-to-terminal communication connection control system, (2) terminal-to-terminal communication connection control system using an IP network that continues terminal-to-terminal communication while moving the geographical position of a telephone or audio-visual device connected to the IP network, (3) ) The terminal location identifier of the terminal and the terminal are registered in a domain name server in the IP network, and a communication path is set inside the IP network in response to a request from one of the terminals, so that the terminal 1 and the terminal 2 In IP (4) Register the IP address of the terminal in a communication line connection unit of the IP network, and allow the IP network to perform communication path setting according to the request of the terminal. This is achieved by discarding IP packets including unregistered IP addresses, thereby preventing unnecessary IP packets from flowing into the IP network.

Since the present invention is based on the IP network disclosed in the eighth embodiment of Patent Document 2, it will be described as an IP network as a premise of the present invention, and then the present invention will be described in detail.
<< IP network as a premise of the present invention (Patent Document 2) >>
It is an IP network capable of implementing fixed telephones, mobile telephones, and multimedia communications.

  In FIG. 1, the IP network 900 includes terminating gateways 901-1 to 901-5. The fixed telephones 905-1 to 905-4 are connected to any of the media routers 903-1 to 903-4 via wired communication lines, respectively, and the mobile telephones 905-5 to 905-8 respectively perform wireless communication. It can be connected to any of the wireless base stations 902-1 to 902-4 via a line. It is not fixed to which radio base station the mobile telephones 905-5 to 905-8 are connected. The media router and the wireless base station are connected to one of the network node devices via a communication line having an IP packet transfer function. 905-10 to 905-17 are terminals having an IP packet transmission / reception function, each of which is connected to a media router via a communication line. FIG. 1 includes FIG. 92 illustrating Example 8 (fixed telephone, mobile telephone, and multimedia communication performed on the same IP network) of Patent Document 2, and includes a wireless base station 902-5 and a mobile telephone after moving. FIG. 93 is a diagram in which 905-6y and 905-6z, a moving call 905-21 of the mobile telephone 905-6, and another moving call 905-22 are added to FIG. Therefore, FIG. 1 of the present invention can implement Example 8 of Patent Document 2.

  Reference numeral 915 denotes an operation management server of the IP network 900, which is connected to the router 911-1 via a communication line. The mobile telephone can be a voice telephone, a telephone with an image input / output function, an audio / video transmitting / receiving device, or a mobile terminal. The terminal gateway 901-1 includes a network node device 906-1 and a terminal control unit 914-1, the network node device 906-1 includes a device control table 910-1, and the terminal control unit 914-1 includes a proxy telephone server 906- 2, a table management server 906-3, a telephone management server 906-4, a telephone number server 906-5, a proxy mobile telephone server 906-6, and a router 916-1. The servers 906-2 to 906-5, the network node device 906-1, and the router 916-1 are directly or indirectly connected by a communication line. Similarly, the terminal gateway 901-2 includes a network node device 907-1 and a terminal control unit 914-2, the network node device 907-1 includes a device control table 910-2, and the terminal control unit 914-2 includes a proxy telephone. A server 907-2, a table management server 907-3, a telephone management server 907-4, a telephone number server 907-5, a proxy mobile telephone server 907-6, and a router 916-2 are included.

The communication cases 1, 2, 3, 4, and 6 will be described separately (excluding the communication case 5).
<< Communication Case 1: Communication between Fixed Phone and Fixed Phone >>
FIG. 2 is a diagram for explaining call connection control for telephone communication from the fixed telephone 905-1 to the fixed telephone 905-4. The telephone number of the telephone 905-1 is "TN1" and the telephone number of the telephone 905-4. Is "TN2". The call connection control in the IP network 900 is based on the common channel signaling method (steps A21, A34, A44, A54, A74, A84).
<< Registration of landline telephone number >>
The registration method of the fixed telephone and the setting of the communication record of the capsule control table in the communication case 1 will be described with reference to FIG. 1 and FIGS.

The user 990-1 of the fixed telephone set 905-1 determines the external IP address “EA1” and the telephone number “TN1” of the fixed telephone set 905-1, applies to the telephone acceptor 991-1, and performs a series of steps (steps in FIG. 3). P1 to P8), the telephone number server 906-5 holds the telephone number "TN1", and the upper telephone number server 995 holds the identification code and the IP address of the lower telephone number server 906-5. I can do it. Further, the upper telephone number server 995 and the lower telephone number servers 906-5, 907-5, 908-5, 909-5 in the IP network 900 can mutually exchange information (FIG. 4). .
<< Communication Case 2: Communication between Mobile Phones and Mobile Phones >>
5 and 6 illustrate telephone communication (call connection control) from the mobile telephone 905-6 to the mobile telephone 905-8. The telephone number of the telephone 905-6 is "TN3" and the telephone of the telephone 905-8 is "TN3". The number is “TN4”. The call connection control in the IP network 900 is based on the common channel signaling method (steps B21, B34, B44, B54, B74, B84).
<< Registration of mobile phone number >>
A method for registering a mobile phone and setting a communication record in the device control table in communication case 2 will be described with reference to FIGS.

The user 990-2 determines the external IP address “EB1” and the telephone number “TN3” used by the mobile telephone 905-6, applies to the telephone acceptor 991-2, and performs a series of steps (steps Q1 to Q7 in FIG. 7). In practice, the telephone number server 995 holds the telephone number “TN3” and the terminal authentication information “PID3” therein.
<< Registration of initial position of mobile phone >>
The mobile phone 905-6 can register its location in the IP network 900. The radio base station 902-3 exchanges information with the mobile telephone 905-6 to confirm the communication possibility, and further executes a series of steps (steps Q10 to Q16 in FIG. 7), at least the telephone number "TN3" and the terminal The authentication information “PID3” is notified to the higher-level telephone number server 995. The upper telephone number server 995 stores the telephone number “TN3” and the terminal authentication information “PID3” held in the telephone number registration step Q7, and the telephone number “TN3” and the terminal authentication information “PID3” acquired in step Q16. To determine whether the terminal authentication result has passed or failed. The authentication result is reported to the mobile phone 905-6 through a series of steps (steps Q20 to Q25).
<< Mobile phone position change >>
In the state where the initial location registration of the mobile phone has been completed, the mobile phone 905-6 changes its location and happens to change to the wireless base station 902-4 via the wireless communication line 917-7 (FIG. 1). This is the case of connection. The radio base station 902-4 exchanges information with the mobile telephone 905-6x, and thereafter, a series of steps are performed (steps Q10x to Q14x in FIG. 8), and as a result, the telephone number server 909-5 transmits the telephone number "TN3". Then, the terminal authentication information “PID3” and the related address are obtained (step Q15x), and notified to the higher-level telephone number server 995 (step Q16x).
<< Communication Case 3: Communication between Mobile Phone and Fixed Phone >>
FIG. 9 is a diagram for explaining telephone communication (call connection control) from the mobile telephone 905-6 to the fixed telephone 905-4. The telephone number of the telephone 905-6 is "TN3" and the telephone number of the telephone 905-4 is “TN2”.
<< Variations of Communication Cases 2 to 4 >>
Other forms of the mobile telephone and the radio base station are disclosed and will be described below. 10, 950-1 is an IP network, 950-2 is a network node device, 950-3 is an IP communication line, 951-1 is a wireless base station, 951-2 is an IP communication line interface unit, and 951-3 is wireless. The interface unit, 952-1 is an analog mobile telephone, 952-2 is a digital mobile telephone, 952-3 and 953-4 are IP mobile telephones, and 953-1 to 953-4 are wireless communication paths. In FIG. 11, an IP communication line 950-3 between a network node device 950-2 and a wireless base station 951-1 transmits and receives a telephone line connection control message and an IP packet including digital voice. Further, telephone line connection control messages and digital voice are transmitted and received in the form of wireless signals over the wireless communication paths 953-1 to 953-4.
<< Communication Case 6: Communication between Terminals for Setting Communication Records >>
FIG. 12 shows a technique disclosed as a communication case 6 in Example 8 of Patent Document 2, which is a communication path for enabling communication from a terminal 905-11 to a terminal 905-11 and a terminal 905-14. A setting request packet (including the identification name of the terminal 905-14) is transmitted (steps K01 to K06), the telephone management server 906-4 inquires of the telephone number server 906-5 (step K07), and the identification of the terminal 905-14. The address information corresponding to the name is obtained (step K08). Then, the telephone management server 906-4 notifies the terminal 905-11 of the communication path setting availability information (steps K55 to K58), and the telephone management server 906-4 requests the telephone management server 907-4 for the communication path setting (steps K55 to K58). Step K21). The telephone management server 906-4 instructs the network node device 906-1 to set a communication record for setting a communication path (steps K66 and K67), and the telephone management server 907-4 sends the communication record setting to the network node device 907. -1 (steps K64 and K65). The communication path is a logical communication path between the network node device 906-1 and the network node device 907-1 in which the communication record is set.

Next, IP packets are transmitted and received using the communication path set as described above (steps K68-1 to K69-5). The communication path release request packet is transmitted from the terminals 905-11 to 905-13, and the communication path is released through a series of communication procedures (steps K70 to K74, K96x to K99x).
<<< terminal between mobile communication network and IP network >>
Patent Literature 2 describes an inter-terminal connection control method based on a common channel signaling method via a mobile communication network and an IP network, which will be outlined below. In the first embodiment of Patent Document 2, a terminal 152 (FIG. 13) requests a connection for communication between terminals, a terminal 152, a media router 153, an IP network 145, a mobile communication network 146, a wireless base station 159, and a terminal 160. A terminal connection control method based on a common channel signaling method for connecting to a terminal 160 via a communication channel is disclosed. Here, the terminal 152 and the terminal 160 are a telephone and a terminal having a function of transmitting and receiving a voice image, and the terminal 160 has a wireless communication function.

A connection request is sent from the terminal 152 (step G01 in FIG. 14), and the media router 153 confirms acceptance (step G02). Subsequently, the media router 153 sends a call setup request to the termination control unit 154 in the termination gateway 145-2 (step G04). When the termination control unit 154 receives the call setup request, the mediation control unit 154 initializes based on the common channel signaling. An address message (IAM) is formed and transmitted (step G05), and the relay control unit 155 in the relay gateway 145-3 converts the initial address message (IAM) into an initial address message (IAM) in a format used in the mobile network 146. ) (Step G06), and the initial address message passes through the relay control unit 156 in the relay gateway 146-2 and the termination control unit 158 in the relay gateway 146-3. The procedure is performed (steps G07 to G49), and the terminal 152 and the terminal 160 Channel between is established. If the terminal 152 and the terminal 160 are both telephones, the digitized telephone voice is transmitted and received in step G50-2. In the case of the terminal 152 and the terminal 160 having the audio / video transmission / reception function, a control procedure for audio / video communication is performed (step G50-1), and media such as audio / video are transmitted / received (step G50-2). ), An audio / video communication termination control procedure is performed (step G50-3). Next, the terminal 152 issues a release request (step G51), and a series of procedures are performed thereafter (steps G52 to G71), and the inter-terminal communication ends. Patent Document 2 also discloses a connection request in the opposite direction, that is, an inter-terminal connection control method based on a common channel signaling method in which the terminal 160 is the transmitting side and the terminal 152 is the receiving side.

1. First Embodiment for Performing Communication via Wireless LAN and IP Network A first embodiment for performing communication via a wireless LAN and IP network will be described. This embodiment is based on the premise that an IP network is implemented on a logical communication path via a telephone 952-1 (FIG. 10), a wireless base station 951-1, and a network node device 950-2. 951-1 is replaced with a wireless unit 1203 (FIG. 15) and a media router 1219, and corresponds to an embodiment in which a telephone or a terminal having a wireless interface is implemented inside the LAN 1200.

  15, 900 is an IP network (IP communication network), 901-1 and 901-4 are terminating gateways, 906-1 and 909-1 are network node devices, 906-4 and 909-4 are telephone management servers, and 906. -5 and 909-5 are telephone number servers, 903-4 is a media router, 905-4 is a telephone, 1230 and 917-2 are communication lines, and the items listed above are the same as those in FIG. It has the same reference numeral as the disclosed function, and has the same name and function. The external IP address of the telephone management server 906-5 is "EA81". 1200 indicates a wireless LAN range, 1201 to 1203 indicate wireless units, 1204 to 1206 indicate wireless transmitting / receiving units, 1207 to 1209 indicate IP processing units, 1210 to 1212 and 1211x indicate wireless communication channels, 1214 to 1216 indicate communication lines, and 1217. Reference numerals 1218 to 1218 denote routers, 1219 denotes a media router, 1220 to 1223 denote terminals having an IP packet transmitting / receiving function (however, terminals including telephone functions), and 1224 denotes an authenticated telephone number server. The terminal registration table 1260 is maintained and managed by the wireless LAN administrator. The radio units 1201 to 1203 include the radio transmission / reception units 1204 to 1206 in this order, and similarly include the IP processing units 1207 to 1209 in this order. The terminal 1220, the router 1217, and the wireless unit 1201 can send and receive IP packets to and from each other via the communication line 1214. The terminals 1221 and 1222, the router 1218, and the wireless unit 1202 can send and receive IP packets to and from each other via the communication line 1215. The terminal 1223, the media router 1219, the telephone number server with authentication 1224, and the wireless unit 1203 can send and receive IP packets to and from each other via the communication line 1216.

  A wireless terminal 500 (in FIG. 15) having an IP packet transmission / reception function includes a wireless communication function and a telephone function. The wireless terminal 500 includes a wireless communication function module 1202x and an IP packet transmission / reception function module 1222x including functions of a telephone.

  Reference numeral 1260 (FIG. 16) indicates a terminal registration table, which includes at least a telephone number and an IP address of a terminal included in the wireless LAN. It can also include the port number used by the terminal, the telephone usage status of the terminal (on / off), the telephone identification symbol, and the mail address. For example, the record in the first row of the terminal registration table 1260 excluding the title part is “1, TN1,“ E1 ”, 5002, off, T1220, mm1＠b1.cc. The meaning of the record in the line is that the record number is “1”, the telephone number is “TN1”, the IP address is “E1”, the port number is “5002”, the telephone usage is “pause”, and the telephone identification number is “T1220”. In this example, the e-mail address is "mm1@b1.cc ....,".

  The terminal registration table 1260 is set inside the media router 1219 (FIG. 15). As another example, the terminal registration table 1260 can be set in the telephone management server with authentication 1224 (FIG. 15). The media router 1219 is a router whose function is extended to handle digital telephones and images, and the internal configuration of the media router is disclosed in Patent Document 2 and the like.

  Next, a description will be given with reference to FIG. The wireless MAC frame 1225 includes at least a MAC header 1227, an IP packet 1226, and a MAC trailer 1228. It is also possible to include an encryption initial value 1229 and an encryption determination value 1230. The MAC header 1227 includes a MAC address and the like, the MAC trailer 1228 includes an error correction code and the like, the encryption initial value 1229 is an initial value in a stream encryption technique, and the encryption determination value 1230 is, for example, data integrity (using an encryption technique). This is determination data representing a type of error detection code. When the encryption function is used, that is, when the encryption initial value 1229 and the encryption determination value 1230 are used, the range of the IP packet 1226 stores a cipher text. The IP processing unit 1208 and the like include an encryption key and include an encryption or decryption function.

  An example in which an IP packet is transmitted and received between the terminal 1222 and the terminal 1223 will be described with reference to FIGS. Here, the IP address of the terminal 1222 is “E1”, and the IP address of the terminal 1223 is “E4”. The terminal 1222 forms an IP packet 1231 and sends it out to the communication line 1215 (FIG. 15) (step C01). However, the source IP address of the IP packet is “E1” and the destination IP address is “E4”. Next, the IP processing unit 1208 converts the IP packet 1231 into a ciphertext (step C02), and sends the generated ciphertext, the cipher initial value and the cipher decision value to the wireless transmitting / receiving unit 1205 (step C03). ). At this time, the IP packet 1231 has been encrypted into a ciphertext IP packet 1241. The wireless transmission / reception unit 1205 forms a MAC frame 1232 for wireless communication (step C04). Next, the MAC frame 1232 is transmitted to the wireless communication path 1211 (step C05). The wireless transmission / reception unit 1206 receives the MAC frame 1232, extracts the ciphertext IP packet 1241 from the MAC frame 1232 (Step C06), and sends the ciphertext IP packet 1241 and the cipher initial value and cipher decision value to the IP processing unit 1209. (Step C07). Then, the IP processing unit 1209 decrypts the ciphertext IP packet 1241 to obtain the plaintext IP packet 1233 (step C08) and sends it out to the communication line 1216 (step C09). To receive. IP packet transfer in the reverse direction is also possible in the same manner as described above. And reaches the terminal 1222 (step C11 to step C19). When the encryption function is not used in the above procedure, the IP packet 1241 in the MAC frame 1232 is plain text.

  Next, a case in which an IP packet is transmitted and received between the terminal 1222 and the terminal 1223 and the IP packet is IP-encapsulated or de-encapsulated in the IP processing units 1208 and 1209 will be described with reference to FIG. In this case, IP processing section 1208 has IP address “J1”, and IP processing section 1209 has IP address “J2”. The terminal 1222 forms and transmits an IP packet 1237 (step D01), and the IP processing unit 1208 converts the IP packet 1237 into cipher text. Subsequently, the IP processing unit 1208 performs IP encapsulation on the generated cipher text, the encryption initial value, and the encryption determination value to form an internal IP packet 1244 (step D02). The source IP address of the internal IP packet is “J1” and the destination IP address is “J2”. The formed internal IP packet 1244 is sent to the wireless transmission / reception unit 1205 (step D03). The wireless transmitting / receiving unit 1205 forms a MAC frame 1238 including the internal IP packet 1244 (Step D04). Next, the MAC frame 1238 is transmitted to the wireless communication path 1211 (step D05). The wireless transmission / reception unit 1206 receives the MAC frame 1238, extracts the internal IP packet 1244 from the inside of the MAC frame 1238 (step D06), and sends it to the IP processing unit 1209 (step D07). The IP processing unit 1209 extracts the IP packet 1244, which is a cipher text, from the internal IP packet 1244, decrypts the IP packet 1244 to decrypt it into a plain text IP packet 1239 (step D08), and sends it out to the communication line 1216 (step D08). Step D09), the terminal 1223 receives the IP packet 1239. IP packet transfer in the reverse direction is also possible in the same manner as above, and the IP packet 1240 generated by the terminal 1223 passes through the IP processing unit 1209, the wireless transmission / reception unit 1206, the wireless communication path 1211, the wireless transmission / reception unit 1205, and the IP processing unit 1208. To reach the terminal 1222 (step D11 to step D19).

  IP encapsulation and decapsulation are further performed between the terminal 1221 and the terminal 1220 by the same procedure as described above, and by the same MAC frame and encryption function, and the IP processing unit 1208, the wireless transmission / reception unit 1205, The IP packet can be transmitted / received via the wireless transmission / reception unit 1204 and the IP processing unit 1207.

Next, with reference to FIG. 20, an arbitrary terminal in the wireless LAN, for example, presents a telephone number from the terminal 1222 to the telephone number server with authentication function 1224 (steps 1271 to 1273), and the telephone having the telephone number In addition, the IP address and port number used by the terminal can be obtained (steps 1274 to 1276). Here, it is possible to present the IP packet including the telephone number to the telephone number server, and use a known technique of acquiring an IP address and a port number.
<< Call from terminal inside wireless LAN >>
Next, with reference to FIG. 21, an inter-terminal communication connection control method for performing telephone communication from the terminal 1222 including the function of the telephone to the telephone 905-4 will be described.

  The telephone number of the terminal 1222 is "TN1", the telephone number of the telephone 905-4 is "TN2", the IP address of the terminal 1222 is "E1", and the IP address of the media router 903-4 for accessing the telephone 905-4. The address is the case of “E2”. In this case, the telephone set 905-4 on the receiving side substantially corresponds to the communication connection control procedure on the receiving side described with reference to FIG. That is, the communication connection control procedure between the media router 903-1 and the media router 903-4 in FIG. 2 is almost the same as the communication connection control procedure between the media router 1219 and the media router 903-4 in FIG. (The procedure between the network node device 906-1 and the network node device 903-4 described in FIG. 2 is partially omitted, and the network node device 906-1 and the network node device 903 in FIG. 21 are omitted. -4).

  Since the communication between the calling terminal 1222 and the media router 1219 has been described with reference to FIGS. 18 to 20, the terminal-to-terminal communication connection control procedure between the terminal 1222 and the telephone 905-4. Can be implemented, and will be described next.

  When the terminal 1222 sends an IP packet including the call connection request, the call connection request is transmitted to the media router 1219 (steps M01, M3a, M3b, M3c, M3d in FIG. 21), and the media router 1219 stores the terminal registration table in the inside. Referring to 1260 (FIG. 16), it is determined whether the telephone number “TN1” and IP address “E1” of terminal 1222 are registered in the record on the first line excluding the title part of terminal registration table 1260. (Step M3e) The media router 1219 returns a call connection request acceptance (Steps M4a, M4b, M4c, M4d, M02). Here, the IP packet includes a telephone number “TN1” as a transmission source and a telephone number “TN2” as a destination. The source IP address of the IP packet is “E1”, and the destination IP address is the IP address “EA81” of the telephone management server 906-5. In another case where the media router 1219 does not include the terminal registration table 1260 and the authenticated telephone number server 1224 (FIG. 15) includes the terminal registration table 1260 instead, the media router calls the authenticated telephone number server 1224. 21 to obtain a terminal registration table (step M3f in FIG. 21), and using the obtained terminal registration table 1260, confirms whether the telephone number “TN1” and the IP address “E1” are registered in the terminal registration table 1260. I do. In the above procedure, if the telephone number “TN1” and the IP address “E1” are not registered in the terminal registration table, the procedure (steps M4a to M02) returns a call connection request rejection, and the connection control described below. Do not perform the procedure.

  Further, in the above procedure, the terminal 1222 inquires the telephone number server with authentication 1224 in the wireless LAN 1200 (step M00a in FIG. 21), acquires an external IP address for accessing the IP network 900 (step M00b), and The communication connection control for calling the telephone 905-4 from the terminal 1222 can also be performed.

  Next, when the media router 1219 sends the IP packet including the call setting request (Step M04 in FIG. 21), the IP packet including the call setting request is transmitted via the communication line 1230 (FIG. 15) to the network node device 906-1, The message is transmitted to the telephone management server 906-4 (step M06). The telephone management server 906-4 obtains a reply to the telephone number server 906-5 (steps M07 and M08). Next, the telephone management server 906-4 forms an IAM packet as an initial address message for making a call setting request, and transmits it to the telephone management server 909-4 (Step M21). The call setting request is notified to the media router 903-4 via the network node device 909-1 (steps M22 and M24), and the media router 903-4 notifies the telephone set 905-4 of the incoming call notification (step M25). The media router 903-4 returns a packet indicating the possibility of reception, the returned packet is notified to the telephone management server 909-4 (steps M31 and M33), and the returned packet is an address completion message (ACM packet). ) Is notified to the telephone management server 906-4 (step M34), the contents of the address completion message are notified to the media router 1219 (steps M35 and M37, optional), and then from the telephone 905-4 to the terminal 1222. A ringing notification is reported (steps M40 to M48). However, in the section (step M44) from the telephone management server 909-4 to the telephone management server 906-4, a call progress message (CPG packet) is transferred. Next, the telephone 905-4 reports a response notification to the terminal 1222 (steps M50 to M58). However, in the section (step M54) from the telephone management server 909-4 to the telephone management server 906-4, a response message (ANM packet) is transferred.

  Next, the telephone management server 906-4 requests the table management server described in the other embodiment, and sets a communication record defining IP encapsulation and the like in the network node device 906-1 (step M66). Similarly, the telephone management server 909-4 sets a communication record specifying IP encapsulation and the like in the network node device 909-1 (step M64). By the above procedure, a voice communication path between the terminal 1222 and the telephone 905-4 has been established.

Voice communication is performed between the terminal 1222 and the telephone 905-4 in the same manner as described in the other embodiments (steps M68-1 to M68-5 and steps M69-1 to M69-5). When the voice communication ends, a procedure for releasing the voice communication path is performed (steps M70 to M79 and steps M80 to M87). However, in the section (step M74) between the telephone management server 906-4 and the telephone management server 909-4, a release request message (REL packet) is transferred, and the section between the telephone management server 909-4 and the telephone management server 906-4. (Step M84), a release completion message (RLC packet) is transferred. Next, the telephone management server 906-4 requests the table management server to delete the communication record set for voice communication (step M96). Similarly, the telephone management server 909-4 sets the network node device 909-1. The communication record set in the field is deleted (step M98).
<< Incoming terminal of wireless LAN >>
Next, an example in which the terminal 1222 inside the wireless LAN 1200 receives (receives) a telephone call from the telephone 905-4 will be described with reference to FIG. The telephone number of the terminal 1222 is "TN1", the telephone number of the telephone 905-4 is "TN2", the IP address of the terminal 1222 is "E1", and the IP address of the media router 903-4 for accessing the telephone 905-4. The address is the case of “E2”. In this case, the side of the calling telephone 905-4 corresponds to the call connection control procedure of the calling side described with reference to FIG. That is, the communication connection control procedure between the media router 903-1 and the media router 903-4 in FIG. 2 matches the communication connection control procedure between the media router 903-4 and the media router 1219 in FIG. I do.

  The communication range 1200-3 (FIG. 22) between the terminal 1222 on the receiving side and the media router 1219 corresponds to the procedure for storing an IP packet in a MAC frame and transmitting and receiving the IP packet described with reference to FIG. Used.

The media router 1219 calls the telephone number server with authentication 1224 and uses the terminal registration table of the telephone number server with authentication 1224 to store the telephone number “TN1” and the IP address “E1” of the terminal 1222 in the terminal registration table 1260. It is confirmed whether or not it has been registered (step N24a in FIG. 22).
<<< communication between wireless LAN-IP network-wireless LAN >>
Another inter-terminal communication connection control method will be described with reference to FIGS. Reference numeral 900 denotes an IP network, and 1200 denotes a wireless LAN, which have the same codes and functions as those used in FIG. 1200R is a wireless LAN, 1219R is a media router, 1202R and 1203R are wireless units, 1211R is a wireless communication path, 1222R is a terminal including a telephone function, and the wireless LAN 1200R has the same internal configuration and functions as the wireless LAN 1200. The media router 1219R includes a terminal registration table of the same format as the terminal registration table 1260 (FIG. 21) for registering terminals in the wireless LAN 1200R.

As described above, the terminal-to-terminal communication connection procedure transmitted by the terminal 1222 in the wireless LAN 1200 is possible (FIG. 21), and the terminal-to-terminal communication connection procedure to be received by the terminal 1222 in the wireless LAN 1200 is possible ( As shown in FIG. 22 and FIG. 23, terminal-to-terminal communication between the terminal 1222, the media router 1219, the IP network 900, the media router 1219R, and the terminal 1222R is possible, and an IP packet is transmitted from the terminal 1222 to the terminal 1222R. 24, steps 1280 to 1284), and transmission can also be performed in the reverse direction (steps 1285 to 1289).
<< wireless terminal used in wireless LAN >>
The wireless terminal 500 (FIG. 25) is a terminal having an IP packet transmitting / receiving function, and includes a wireless communication function and a telephone function. The wireless communication function module 1202x (FIG. 15) in the wireless terminal 500 includes the wireless communication function of the wireless unit 1202, and the IP packet transmission / reception function module 1222x (FIG. 15) further includes the IP packet transmission / reception function of the terminal 1222 and the telephone. Including features. With this configuration, the wireless terminal 500 can be used as a mobile telephone used in a wireless LAN. Further, the wireless terminal 500 can be used as a terminal capable of transmitting and receiving digital data by transmitting and receiving IP packets, a mobile telephone capable of transmitting and receiving digitized images and voices, and a voice image device with a wireless function.

  Further, the wireless terminal 500 can perform telephone communication with the fixed telephone 905-4 via the wireless communication path 1211x, the wireless unit 1203, the media router 1219, the communication path 1230, the IP network 900, and the media router 903-4. Similarly, the wireless terminal 500 can perform telephone communication with the mobile telephone 905-8 via the wireless communication path 1211x, the wireless unit 1203, the media router 1219, the communication path 1230, the IP network 900, and the wireless base station 902-4. is there. Similarly, the wireless terminal 500 transmits and receives IP packets to and from the IP terminal 905-17 via the wireless communication path 1211x, the wireless unit 1203, the media router 1219, the communication path 1230, the IP network 900, and the media router 903-4. Is possible. Further, the wireless terminal 500 performs telephone communication with the terminal 1220 via the wireless communication path 1211x, the wireless unit 1203, the wireless communication path 1212 (FIG. 15), and the wireless unit 1201, and digitized images, voices, and images. Can be transmitted and received.

In order to implement telephone call connection control between the wireless terminal 500 and the fixed telephone 905-4, the mobile telephone 505-8, and the IP terminal 905-17, a communication line in the IP network 900 follows a common channel signaling system. A telephone call connection control message is sent and received. The principle of the common channel signaling system is the same as that of the telephone communication between the terminal 1222 and the telephone 905-4 (FIGS. 21 and 22).
<< How to connect wireless terminal to communication network >>
A method for connecting the wireless terminal 500 to another communication network without using the wireless terminal 500 inside the wireless LAN 1200 will be described. Reference numerals 500, 500-1, 500-2, and 500-3 (FIG. 25) denote the same wireless terminal, and a difference lies in a connection destination via a wireless communication path. The wireless terminal 500 is connected to the wireless unit 1203 via the wireless communication path 1211x, and the wireless terminal 500-1 is connected to the wireless base station 902-5 of the IP network 900 via the wireless communication path 1231. The terminal 500-2 is connected to the wireless base station 902-3 of the IP network 900 via the wireless communication path 1232. Further, the wireless terminal 500-3 is connected to the wireless base station 513 of the mobile communication network 510 via the wireless communication path 517.

  Since the wireless terminal 500-1 has a wireless communication function of communicating with the wireless base station 902-5, the wireless terminal 500-1—the wireless base station 902-5—the inside of the IP network 900—the wireless base station 902-4 -Telephone communication is possible with the mobile telephone 905-8 via the mobile telephone 905-8. Further, the wireless terminal 500-1 communicates with the fixed telephone 905-4 via the wireless terminal 500-1-the wireless base station 902-5-the inside of the IP network 900-the media router 903-4-the fixed telephone 905-4. It is possible. Further, the wireless terminal 500-1 is connected to the wireless terminal 500-1 through the wireless base station 902-5, the inside of the IP network 900, the media router 903-4-, the IP terminal 905-17, and the IP terminal by the common channel signaling method. A communication path is established between the wireless terminal 500-1 and the wireless terminal 500-1 and the terminal 905-17 can send and receive IP packets to send and receive digital data, and send and receive digitized images and sounds. It is possible. Similarly, communication is possible between terminal 500-2 and mobile telephone 905-8 via IP network 900, and communication between terminal 500-2 and fixed telephone 905-4 via IP network 900 is also possible. The communication is possible between the terminal 500-2 and the IP terminal 905-17 via the IP network 900.

  A mobile communication network 510 (FIG. 25) is different from the IP network 900. The mobile telephone 505 and the mobile telephone 506 can perform telephone communication via the mobile telephone 505, the wireless base station 513, the exchange 511, the communication line 515, the exchange 512, the wireless base station 514, and the mobile telephone 506. A telephone call connection control message according to the common channel signaling system is transmitted / received to / from communication line 515, and telephone call connection control for telephone communication between mobile telephones 505 and 506 is performed.

Since the wireless terminal 500-3 has a wireless communication function with the wireless base station 513, the wireless terminal 500-3—the wireless base station 513—the exchange 511—the communication line inside the mobile network 510—the exchange 512—the wireless base station 514—communicable with the mobile telephone 506 via the mobile telephone 506. If the mobile telephone 506 can store and transmit digital voice and image data in IP packets, the wireless terminal 500-3 and the mobile telephone 506 can transmit and receive IP packets and transmit and receive digitized images and voices. You can also. Instead of the mobile telephone 506, a terminal having a wireless function and capable of transmitting and receiving digital data, voice, and image (voice / video terminal with wireless function) is used to move between the wireless terminal 500-3 and the voice / video terminal with wireless function. Communication can also be performed via the communication network 510.
<< Communication via Wireless LAN-IP Network-PSTN or Mobile Communication Network >>
FIG. 26 is a diagram illustrating communication via a wireless LAN-IP network-public switched telephone network (PSTN) and communication via a wireless LAN-IP network-mobile communication network. 600 is an IP network, 601 is a mobile communication network, 602 is a public switched telephone network, 1200 is a wireless LAN, 603 is a terminal gateway, 604 and 605 are relay gateways, 606 is a relay switch, 607 is a terminal switch, and 608 is a mobile communication network. 609, an exchange for a mobile communication network (also called a mobile network subscriber control station), 610, a radio base station, 612, a terminal of the public switched telephone network 602, 613. Is a terminal of the mobile communication network 601.

  FIG. 27 shows that the wireless terminal 500 passes through the wireless communication path 1211x and the media router 1219 to the terminal gateway 603, the inside of the IP network 600, the relay gateway 604, the relay switch 606, the inside of the public switched telephone network 602, and the terminal switch 607. A method for controlling terminal-to-terminal communication connection to the terminal 612 is shown. The communication procedure range 1200-5 (FIG. 27) and the communication procedure range 600-5 are, for example, similar to the communication procedure range 1200-2 (FIG. 21) and the communication procedure range 900-2. The communication connection control based on the common channel signaling system is implemented. The communication procedure range 602-5 (FIG. 27) is a known technique. Steps 631X to 658X are communication path establishment phases of terminal-to-terminal communication. In step 660X, voices and images are transmitted and received between the terminals. Steps 664X to 678X are a communication path release phase of communication between terminals. In steps 634X and 636X in the communication procedure range 600-5 and 602-5, communication connection control by the common channel signaling method is performed.

  FIG. 28 shows a method of controlling communication connection between terminals in the opposite direction, that is, from the terminal 612 to the public switched telephone network 602, the IP network 600, and the wireless terminal 500. The communication procedure ranges 1200-6 (FIG. 28) and 600-6 are, for example, similar to the communication procedure ranges 1200-3 (FIG. 22) and 900-3, based on the common channel signaling from the IP network to the terminal inside the wireless LAN. Communication connection control based on The communication procedure range 602-6 (FIG. 27) is a known technique. The steps of the terminal-to-terminal communication connection control in FIG. 28 are the same as the steps in FIG. 27 in which “X” at the end of the step name is represented by “Y”.

  In summary, communication between the wireless terminal and the terminal connected to the public switched telephone network can be performed via a communication path connecting a wireless terminal, a wireless LAN, an IP network, a public switched telephone network, and a terminal. The inside of the public switched telephone network performs connection control based on the common channel signaling system.

  FIG. 29 shows a terminal from a wireless terminal 500 via a wireless communication path 1211x and a media router 1219, via a termination gateway 603, inside the IP network 600, a relay gateway 605, a relay exchange 608, an exchange 609, and a wireless base station 610. 613 shows a method for controlling communication connection between terminals. The communication procedure ranges 1200-7 (FIG. 29) and 600-7 are the same as the communication procedure ranges 1200-5 (FIG. 27) and 600-5, for example. The communication procedure range 601-7 (FIG. 29) is the same as 145-1 (FIG. 14).

FIG. 30 shows a method for controlling communication connection between terminals in the opposite direction, that is, from the terminal 613 to the mobile communication network 601, the IP network 600, and the wireless terminal 500. The communication procedure ranges 1200-8 (FIG. 30) and 600-8 are the same as, for example, the communication procedure ranges 1200-6 (FIG. 28) and 600-6, and the communication procedure range 602-5 (FIG. This is similar to the communication connection control between terminals disclosed in Document 2 (FIG. 14) and the like. The steps of the communication connection control between terminals in FIGS. 29 and 30 are the same as the steps shown in FIGS. 27 and 28. In summary, communication between a wireless terminal and a terminal can be performed via a communication path connecting a wireless terminal, a wireless LAN, an IP network, a mobile communication network, and a terminal. Perform connection control based on
<< Summary >>
In order to enable a terminal connected to the wireless LAN to communicate with another terminal via the IP network, an authentication server is installed in the IP network and performs an authentication procedure for a terminal inside the wireless LAN.

  The IP network includes two or more network node devices. An external IP packet is converted into an internal packet in the ingress network node device and transferred inside the IP network, and an external IP packet is restored from the internal packet in the egress network node device. The wireless LAN is connected from the media router 1 in the wireless LAN to one of the network node devices of the IP network via a communication line, and the wireless LAN includes the terminal 1; Numeral 2 is connected to one of the network node devices of the IP network via the communication line via the media router 2, and the terminal registration table is set inside the media router 1, and is connected from the terminal 1 to the terminal 2. When the terminal 1 is connected to the terminal 1, the terminal 1 performs communication connection control including a procedure for obtaining a transmission permission based on the management of the terminal registration table. It is also possible to perform communication connection control including a procedure for obtaining an incoming call permission based on the management of the record table, and perform communication between the terminal 1 and the terminal 2 via the wireless LAN and the IP network based on the management of the terminal registration table. can do.

  The terminal registration table is not included in the media router 1 but is included in the authenticated telephone number server. The media router 1 can call the authenticated telephone number server and use the terminal registration table. .

  A wireless MAC frame transmitted and received in a wireless LAN can include an internal packet that is IP-encapsulated. The terminal 1 can also make an inquiry to the telephone number server with authentication in the wireless LAN 1 to obtain an external IP address for accessing the IP network, and then perform communication connection control for calling the terminal 2 from the terminal 1. The IP network used by the terminal 1 and the terminal 2 for communication between communication terminals via the wireless LAN and the IP network is the IP network 900 disclosed with reference to FIG. 1, that is, any of the fixed telephone, the mobile telephone, and the multimedia communication. An practicable IP network can also be used.

  As another inter-terminal communication connection control method between the terminal 1 and the terminal 2, the wireless LAN 1 includes at least the terminal 1, the wireless LAN 2 includes at least the terminal 2, the wireless LAN 1 includes the media router 1 in the wireless LAN 1, and the communication line. And the wireless LAN 2 is connected to one network node device of the IP network via the media router 2 in the wireless LAN 2 and the communication line, and the terminal registration table 1 The terminal registration table 2 is set in the media router 1 and the terminal registration table 2 is set in the media router 1. The terminal 1 and the terminal 2 may communicate with each other via the wireless LAN 1, the IP network, and the wireless LAN 2. It is possible.

  The wireless terminal 500 used in the wireless LAN is a mobile telephone, and also has a wireless communication function and is an IP terminal having an IP packet transmission / reception function. A wireless terminal connects to a wireless section of a wireless LAN via a wireless communication path, further connects to an IP network via a media router, and has a telephone (fixed telephone or mobile telephone) connected to the IP network and an IP packet transmission / reception function. Can communicate with IP terminals. The wireless terminal can also be used as a mobile telephone or a voice image device with a wireless function capable of transmitting and receiving digitized images and sounds. In addition, the wireless terminal is connected to an IP network via a wireless communication path and a wireless base station, and can communicate with a telephone (fixed telephone or mobile telephone) connected to the IP network or an IP terminal having an IP packet transmission / reception function. Further, the wireless terminal is connected to a mobile communication network via a wireless communication path and a wireless base station, and can communicate with a telephone (fixed telephone or mobile telephone) connected to the mobile communication network or an IP terminal having an IP packet transmission / reception function. In order to perform communication between wireless terminals, connection control based on a common channel signaling method is performed inside the IP network and the mobile communication network.

The IP network used by the terminal 1 and the terminal 2 for communication between communication terminals via the wireless LAN 1, the IP network, and the wireless LAN 2 is the IP network 900 disclosed in FIG. 1, that is, the fixed telephone, the mobile telephone, and the multimedia communication. It is characterized by using an IP network that can be implemented in both cases.

2. Second Embodiment in which Telephony is Continued by Switching Wireless Base Station FIG. 31 shows an IP network 900X in which the wireless base stations 902-1 to 902-5 inside the IP network 900 (FIG. 1) are taken out. The wireless base stations 902-2 and 902-3 connect to the terminal gateway 901-3 via an IP communication line, the wireless base station 902-5 connects to the terminal gateway 901-1 via an IP communication line, and The base station 902-4 is connected to the terminating gateway 901-4 via an IP communication line. Reference numerals 202 to 205 denote wireless communication areas, which indicate ranges in which wireless communication is possible between the wireless base stations 902-2 to 902-5 and the mobile telephone. The terminal gateways 901-1 to 901-4 (in FIG. 1) include a telephone management server and other various servers. Although each terminating gateway can include one or more proxy mobile telephone servers, this embodiment is an example in which the number of proxy mobile telephone servers is one. The IP network 900X can perform the same function as the IP network 900 in cooperation with an external wireless base station. Resources in the IP network 900X (network node device, server, communication line, etc.) Identical. There is no essential difference between the communication function in which the IP network 900X and the wireless base station are linked and the function function of the IP network 900. Hereinafter, the IP network 900 and the IP network 900X will be described without distinction.

  The mobile phone dedicated phone number server 966 (FIG. 31) includes a mobile phone registration table 210 consisting of one or more records. The record in the first row excluding the title part of the mobile telephone registration table 210 (FIG. 36) includes the internal IP address “IA301” and the external IP address “EA301” used for telephone communication using the telephone number “TN3”, It includes “UNI3”, which is the UNI to the base station 902-3, and the password “PID3”, and the other rows are the same.

  The terminating gateway address management table 211 (FIGS. 31 and 37) managed by the telephone management server 908-4 indicates that the internal IP address “IA851” for encapsulating the IP packet storing the digital voice is the value of the internal IP address. "IA43" is specified to pass through the proxy telephone server. The internal IP addresses “IA301, IA4, IA6, IA9” in the end gateway address management table 211 indicate that the association with the proxy telephone server has not been determined. The other telephone management servers 906-4 (FIG. 31), 907-4, and 909-4 also manage the end gateway address management tables.

  The wireless base station address management table 212 (in FIG. 39) managed by the wireless base station 902-3 indicates the source IP address (or the source IP address of the IP packet transmitted from the wireless base station 902-3 to the terminating gateway via the communication line). The information includes a source address), a source port number (or a source port number), and a wireless channel identification symbol for communicating with the mobile telephone from the wireless base station 902-3 via the wireless channel. The first line of the wireless base station address management table 212 excluding the title part is the source IP address “EA301”, the source port number “5006”, the wireless line identification symbol “WC3”, and the first line is in use. Is shown. The second line indicates the source IP address “EA301”, the source port number “5008”, the radio line identification symbol “WC4”, and indicates that the second line is unused. The radio base station 902-3 performs distribution management of communication resources, that is, a source IP address, a source port number, and a radio line, in response to the generation of the telephone call request. As a result of the distribution management, the radio base station address management table 212 Rewrite. Other wireless base stations 902-1 to 902-5 also manage the same wireless base station address management table.

  In the present embodiment, the mobile telephones 905-6 (FIG. 31) and the mobile telephones 905-8 in the wireless communication area 203 include a mobile telephone 905-6, a wireless base station 902-3, a terminating gateway 901-3, and an IP. The telephone communication is performed inside the network 900X, the terminating gateway 901-4, the radio base station 902-4, and the mobile telephone 905-8. As a next stage, the mobile telephone 905-6 determines the position of the 905-6Z. After that, moving to the position of 905-6y and continuing the telephone communication, that is, the mobile telephone 905-6y, the wireless base station 902-5, the terminal gateway 901-1, the inside of the IP network 900X, the terminal gateway 901-4, This embodiment will explain the continuation of telephone communication via the wireless base station 902-4 and the mobile telephone 905-6.

In the following description, the mobile telephone 905-6 (FIG. 31), the mobile telephone 905-6z and the mobile telephone 905-6y are the same telephone, but their locations are different with time, and 905-6 is a wireless telephone. A mobile phone located in the communication area 203, 905-6z is a mobile phone located in a place where the wireless communication area 203 and the wireless communication area 205 overlap, and 905-6y is a mobile phone located in the wireless communication area 205. Represents a located mobile telephone.
<< Delivery of internal IP address >>
Next, a method of delivering an internal IP address will be described with reference to FIGS. Before starting the telephone communication service, the operation management server 915 (FIGS. 1 and 33) distributes the internal IP address to the telephone management server 908-4 (step K1), and the telephone management server 908-4 manages the terminating gateway address. The received internal IP address “IA851, IA301, IA5, IA6, IA9” is written and held in the table 211 (FIG. 37). Similarly, the operation management server 915 delivers the internal IP address (step K4), and the telephone management server 906-4 holds the received internal IP address in its internal end gateway address management table 211X (in FIG. 64). . Further, the operation management server 915 distributes the internal IP address (step K7), and the telephone management server 909-4 holds the received internal IP address in its internal end gateway address management table. The internal address “IA851” in the end gateway address management table 211 (in FIG. 37) is a communication between the proxy mobile telephone server having the internal IP address value “IA43” and the radio base station via the user network interface “UNI3”. In this case, the internal address “IA850” is allocated for the purpose.
<< Main IP address >>
EA1 is the external IP address of the wireless base station 902-5, IA1 is the internal IP address of the logical terminal at the end of the communication line connected to the wireless base station 902-5, EA3 is the external IP address of the wireless base station 902-3, and IA3 is EA4 is the external IP address of the wireless base station 902-4, and IA4 is the logical terminal of the communication line end connected to the wireless base station 902-4. Is the internal IP address. EMB is an external IP address common to the proxy mobile phone server, IA41 is the internal IP address of the proxy mobile phone server 906-6, IA42 is the internal IP address of the proxy mobile phone server 907-6, and IA43 is the proxy mobile phone server 908. -6 is the internal IP address of the proxy mobile telephone server 909-6.

  IA11 is the (internal) IP address of the telephone management server 906-4, IA12 is the (internal) IP address of the telephone management server 907-4, and IA13 is the (internal) IP address of the telephone management server 908-4. , IA14 are (internal) IP addresses of the telephone management server 909-4. IA 996 is the (internal) IP address of the telephone number server 996. Note that the telephone management server and the telephone number server do not have an external IP address.

EA301, EA401, and EA101 are external IP addresses used in communication phases such as digital voice transmission / reception, IA301, IA401, and IA101 are internal IP addresses used in communication phases such as digital voice transmission / reception, and the port number "5006" is wireless. The source port number used when the base station 902-3 transmits digital voice. The port number "5008" is the source port number used when the wireless base station 902-4 transmits digital voice. "5012" is a source port number used when the wireless base station 902-5 transmits digital voice. The port number “5060” is a numerical example of a port number applicable to a telephone call connection control procedure between terminals (such as SIP). The IP address in the IP packet is illustrated in the order of the source IP address (source IP address) and the destination IP address from the top side. For example, “EA3” in the IP packet 213 (FIG. 40) indicates the source IP address. “EMB” means a destination IP address. In the IP network 900, for example, an IP packet to which an internal IP address is assigned among the IP addresses is transmitted and received.
<< mobile phone initial location registration >>
A procedure for registering a mobile telephone in the IP network 900 is performed, which will be described later in the present embodiment.
<< Call connection control >>
32 and 33, the first half of the call connection control for calling mobile telephone 905-8 having telephone number "TN4" from mobile telephone 905-6 having telephone number "TN3" (that is, steps B01 to B01) B60-4) will be described. The flow of the call connection control is the same as the flow of the call control for calling the mobile telephone 905-8 from the mobile telephone 905-6 shown in the call connection control of the IP network (Eighth Embodiment of Patent Document 2) of the present invention (FIG. 5) is substantially the same as step B01 to step B60-4, but the expression format of the CIC management table for managing the telephone call, the method of obtaining the IP address and the port number, and the address value of the server are the same. This is changed in the embodiment. Also, a telephone number server 996 (FIGS. 31 and 33) dedicated to a mobile telephone is used as the telephone number server.

  When the call connection request is transmitted from the telephone set 905-6 (step B01), the wireless base station 902-3 returns (step B02). Next, the telephone set 905-6 sends a call setting request including the source telephone number "TN3" and the destination telephone number "TN4" to the wireless base station 902-3 (step B03), and the wireless base station 902-3. Obtains the external IP address “EA301” for voice communication, the port number “5006”, the UNI “UNI3” and the wireless channel identification symbol “WC3” using the wireless base station address management table 212 (FIG. 39), A call setting request IP packet 213 (FIG. 40) including the external IP address “EA301”, the port number “5006”, and the additional information “Info3” is formed and transmitted to the network node device 908-1 (step B04). The additional information "Info3" includes at least the UNI "UNI3" of the communication line 917-3 (FIG. 31) and the radio line identification symbol "WC3".

  The network node device 908-1 applies the record “IA3, IA43, Kzero, EMB, Mzero, M255,...” In the first row in the device control table 910-3 (FIG. 52), and the IP packet 213. Is encapsulated to form an internal packet 214 (FIG. 41) and transmitted to the proxy mobile telephone server 908-6 (step B05). The proxy mobile telephone server 908-6 forms an IP packet 215 (FIG. 42) based on the IP packet 214, and transmits it to the telephone management server 908-4 (step B06).

Next, the telephone management server 908-4 calculates the line number "CIC-7" from the set of the telephone number "TN3" and the telephone number "TN4", and forms the CIC management table 908-4A (FIG. 55). Here, various addresses and related information (IA3, EA3, IA43, EMB, IA13, TN3, TN4, EA301, 5006, UNI3, WC3) are obtained from the IP packet 215. In addition, an item “IAM” and a time “St3” are set. Further, the telephone management server 908-4 sends an IP packet 216 (FIG. 43) containing the telephone numbers "TN3" and "TN4" to the telephone number server 996 dedicated to the mobile telephone (step B07x). Using the mobile telephone registration table 210 therein (FIG. 36), an IP packet 217 (FIG. 44) including various IP addresses, UNIs, and PIDs corresponding to the telephone numbers "TN3" and "TN4" is answered (step). B08x).
<< Comparison and update of addresses for voice communication >>
The telephone management server 908-4 has an internal IP address (“IA301” in this case) for encapsulating a digital voice packet transmitted by the wireless base station 902-3 in the IP packet 217 (FIG. 44). (For example, immediately after the wireless base station is opened) or whether the internal IP address “IA301” is not included as an assigned item in the terminal gateway address management table 211 (in FIG. 37). In this case, since the area is divided into an unallocated area, the internal IP address “IA301” is changed to an allocated item. For this purpose, the telephone management server 908-4 rewrites the terminal gateway address management table 211 as a terminal gateway address management table 211Z (in FIG. 37). In the case where “IA301” is not included as an unassigned IP address in the terminal gateway address management table 211, another IP address, for example, “IA5” is moved to the address allocation area of the terminal gateway address management table 211Z.

  Next, the telephone management server 908-4 sends the external IP address (EA301 in this case) for the digital voice packet obtained from the IP packet 217 (FIG. 44) and the digital voice packet obtained from the IP packet 215 (FIG. 42). It is checked whether the value matches the external IP address (EA 301 in this case) for the digital voice packet obtained from the IP packet 217 and the end gateway address management table. It is checked whether the value of the IP address (IA301 in this case) acquired from the 211Z by the above procedure matches.

In this case, since the values of the external IP address (EA301) and the internal IP address (IA301) match, the process proceeds to the next step. In a case where at least one of the external IP address and the internal IP address does not match, the external IP address (for example, EA301) obtained from the IP packet 215 and the IP address (for example, IA301) is written into the telephone number server 966 (step B08y in FIGS. 32 and 33). Thus, when the external IP address (for example, EA301) for digital voice transmitted from the mobile telephone 905-6 side is changed to a new value (for example, EA301 is changed to EA301x), the mobile telephone 905 is changed. The address value of the mobile telephone registration table 210 in the telephone number server 966 is rewritten to the latest value without changing the -6 telephone number (for example, TN3).
<< Continuation of call connection control >>
The telephone management server 908-4 adds the various IP addresses and UNI4 acquired from the IP packet 217 (FIG. 44) to the CIC management table 908-4A (FIG. 55), and the result is added to the CIC management table 908-4B (FIG. 55). This is shown in the record on the first line in FIG. 56).

  Next, the telephone management server 908-4 forms an IP packet including at least a call setting acceptance and an authentication request and sends it to the proxy mobile telephone server 908-6 (step B09), and the authentication request is sent to the network node device 908-. 1. Reach the telephone 905-6 via the wireless base station 902-3 (step B10 to step B12). As the authentication password used for the authentication request, “PID3” obtained from the IP packet 217 (FIG. 44) is used. The telephone 905-6 returns an authentication response (terminal authentication pass / fail), and the authentication response is sent to the telephone management server 908-4 via the wireless base station 902-3, the network node device 908-1, and the proxy mobile telephone server 908-6. It reaches (step B13 to step B16). The telephone management server 908-4 sends an IP packet containing at least terminal authentication pass / fail to the proxy mobile telephone server 908-6, and at least terminal authentication pass / fail information is transmitted via the network node device 908-1 and the wireless base station 902-3. Notification is sent to the telephone 905-6 (step B17 to step B20).

Next, the telephone management server 908-4 refers to the CIC management table 908-4B (FIG. 56), the IP packet 215 (FIG. 42), and the IP packet 217 (FIG. 44) to make an IP packet 218 for making a call setting request. (FIG. 45) An (IAM packet) is formed, and the IP packet 218 is transmitted to the telephone management server 909-4 (step B21). As the terminal authentication function, the password “PID3” held in the mobile phone registration table 210 is used for the terminal authentication pass / fail determination of the calling telephone 905-6 (steps B09 to B20).
<< Management of line number CIC >>
The telephone management server 909-4 receives the IP packet 218 (FIG. 45), and receives various information (CIC-7, IAM, TN3, TN4, TN4, 5006, IA3, EA3, IA301, EA301, IA43, EMB) in the IP packet 218. , UNI3,
IA4, EA4, IA401, EA401, IA44, PID4, UNI4, IA13, IA14), and forms a CIC management table 909-4A (FIG. 59). At this time, the writing time “St4” is also written. The address information inside the CIC management table 909-4A is opposite to that of the address information in the CIC management table 908-4B (FIG. 56).

  Next, the telephone management server 909-4 forms an IP packet 219 (FIG. 46) including the call setting request using the received IP packet 218, and sends the IP packet 219 to the proxy mobile telephone server 909-6. (Step B22). Proxy mobile phone server 909-6 forms IP packet 220 (FIG. 47) and transmits it to network node device 909-1 (step B23). The network node device 909-1 decapsulates the received IP packet 220 to form an IP packet 221 (FIG. 48), and then transmits the IP packet 221 to the wireless base station 902-4 (step B24). The wireless base station 902-4 tentatively notifies the telephone 905-8 of the incoming telephone call via the wireless communication path 917-6 (FIG. 31) based on the received IP packet 221 (step B25). The telephone 905-8 reports the state of the wireless communication path 917-6 to the wireless base station 902-4 (step B26), and subsequently sends information indicating terminal validity (generated from a password). The validity-related information reaches the telephone management server 909-4 via the wireless base station 902-4, the network node device 909-1, and the proxy mobile telephone server 909-6 (steps B27a to B27d). The telephone management server 909-4 discriminates the terminal validity request information and sends out an IP packet containing terminal authentication pass / fail information, and the terminal authentication pass / fail information is transmitted to the proxy mobile telephone server 909-6, the network node device 909-1, the base station It reaches the telephone 905-8 via the station 902-4 (step B28a to step B28d). As the terminal authentication function, the password “PID4” held in the mobile phone registration table 210 is used for the terminal authentication pass / fail determination of the called telephone 905-8 (steps B26a to B33).

  Next, the wireless base station 902-4 notifies the telephone 905-8 of a call (incoming call) (step B30). Next, the wireless base station 902-4 generates an IP packet including the telephone numbers "TN3" and "TN4" and the reception possibility report information, and notifies the telephone management server 909-4 (steps B31 to B33). The password “PID4” obtained from the internal packet 218 (FIG. 45) is used as the authentication password used for the authentication request. The telephone management server 909-4 extracts the source telephone number "TN3", the destination telephone number "TN4", and the incoming call propriety report information from the received IP packet. Then, the line number “CIC-7” is calculated from the two telephone numbers, and the procedure item in the CIC management table 909-4A (FIG. 59) is rewritten from “IAM” to “ACM”, and the line number “CIC-7” And transmits the ACM packet 222 to the telephone management server 908-4 (step B34), and the telephone management server 908-4 transmits the reception possibility report information to the radio base station 902. -3 can also be notified (steps B35 to B37, optional).

  Upon receiving the call notification from the telephone 905-8 (step B40), the radio base station 902-4 sends the call notification to the telephone management server 909 via the network node device 909-1 and the proxy mobile telephone server 909-6. -4 (step B41 to step B43). The wireless base station 902-4 includes the port number "5008" used for digital voice transmission and the wireless channel identification symbol "WC4" of the wireless channel 917-6 in the calling notification. The telephone management server 909-4 extracts the port number “5008” and the wireless line identification code “WC4” from the calling notification and writes them in the CIC management table 909-4A (FIG. 59), and further describes the procedure item as “ CPG ". The result is the CIC management table 909-4B (FIG. 60) except for the description of the procedure items. It should be noted that the procedure items are written with values at the time of other steps.

  Next, the telephone management server 909-4 forms a CPG packet 223 (FIG. 50) indicating that the telephone is being called, and transmits it to the telephone management server 908-4 (step B44). Note that the telephone management server 909-4 includes the port number “5008” in the CPG packet 223. The telephone management server 908-4 extracts the port number “5008” from the received CPG packet 223, writes it in the CIC management table 908-4B (FIG. 56), and further writes the procedure items in the CIC management table 908-4B. Rewritten to "CPG" and the result is as shown in CIC management table 908-4C (FIG. 57). Next, the telephone management server 908-4 notifies the telephone calling information to the telephone 905-6 via the proxy mobile telephone server 908-6, the network node device 908-1, and the wireless base station 902-3 (step B45). Step B48).

Next, the telephone 905-8 responds to the call (step B50), and the response is sent to the telephone management server 909-4 via the radio base station 902-4, the network node device 909-1, and the proxy mobile telephone server 909-6. It reaches (step 51 to step 53). The telephone management server 909-4 can also return a response confirmation to the wireless base station 902-3 (steps B60-1 to 60-4, optional). The telephone management server 909-4 forms and sends out an ANM packet 224 (FIG. 51) indicating a telephone response, the ANM packet 224 reaches the telephone management server 908-4, and the response information is a proxy mobile telephone server 908-6. It reaches the telephone 905-6 via the network node device 908-1 and the wireless base station 902-3 (steps B54 to B58). Note that the telephone management server 909-4 can also include the port number “5008” in the ANM packet 224 to notify the telephone management server 908-4 (optional). The telephone 905-6 can also return a response confirmation to the wireless base station 902-3 (step B59, option).
<< Communication record setting >>
The telephone management server 909-4 acquires the communication record write information with reference to the CIC management table 909-4B (FIG. 60) and transmits it to the table management server 909-3 (step B64). 909-3 is set as a record "IA401, IA301, EA401, EA301, M255, M255, ..." in the fourth row of the device control table 910-4 (FIG. 53) in the network node device 909-1 (step). B65). Here, the mask information M255 is “255.255.255.255”. Similarly, the telephone management server 908-4 acquires the write information of the communication record with reference to the CIC management table 908-4C (FIG. 57) and transmits it to the table management server 908-3 (step B66). The table management server 908-3 sets the record “IA301, IA401, EA301, EA401, M255, M255,...” In the third row of the device control table 910-3 (FIG. 52) (step B67).
<< Communication phase >>
For the telephone communication between the telephone 905-6 and the telephone 905-8, the record "IA301, IA401, EA301, EA401, M255, M255" of the third line set in the device control table 910-3 (FIG. 52) is used. ,..., And the record “IA401, IA301, EA401, EA301, M255, M255,...” On the fourth line set in the device control table 910-4 (FIG. 53). The voice of the telephone 905-6 is transferred via the wireless communication path 917-5 (FIG. 31) (step B68-1), and the voice IP packet digitized by the wireless base station 902-3 is transferred inside the IP network. Then, it reaches the wireless base station 902-4 (steps B68-2 to B68-4), and the telephone voice is transmitted in the form of wireless communication radio waves through the wireless communication path 917-6 in the wireless base station 902-4. The telephone arrives at the telephone 905-8 (step B68-5). The analog voice transmitted from the telephone 905-8 is digitized, stored in an IP packet, and transmitted in the reverse direction (steps B69-1 to B69-5).
<< wireless communication area detection and movement preparation procedure >>
When the mobile telephone 905-6 (FIG. 31) moves and is located in the overlapping wireless communication area 205, the mobile telephone 905-6z transmits the wireless base station 902-5 from the wireless base station 902-5 via the wireless communication path 917-10. The radio base station identification code “BS902-5” of the station 902-5 and the identification code “GWE901-1” of the terminal gateway 901-1 connected to the radio base station 902-5 are acquired (step B80 in FIG. 32). Next, steps B81 to B93 within the step range 230 in FIGS. 32 and 33 will be described. The mobile telephone 905-6z has a telephone number "TN3", a destination telephone number "TN4", and an identification symbol "GWE901-1".
And "BS902-5" to the wireless base station 902-3 via the wireless communication path 917-5y (step B81, called a handover request). The wireless base station 902-3 forms an IP packet 225 (FIG. 65) including the telephone numbers "TN3" and "TN4" and the identification symbols "GWE901-1" and "BS902-5", and forms the network node device 908-1. (Step B82), and the network node device 908-1 uses the record “IA3, IA43, Kzero, EMB, Mzero, M255,...” In the first row of the device control table 910-3 (FIG. 52). The IP packet 225 is encapsulated in IP to form an internal packet 226 (FIG. 66) and transferred to the proxy mobile phone server 908-6 (step B83). 227 (FIG. 67), and transfers the internal packet 227 to the telephone management server 908-4 (step B84).

The telephone management server 908-4 receives the internal packet 227 and extracts the source telephone number “TN3”, the destination telephone number “TN4”, the identification symbols “GWE901-1” and “BS902-5”, and A CIC number “CIC-7” is formed from “TN3” and the destination telephone number “TN4”, and is “CIC-7” from a plurality of CIC management tables held by the telephone management server 908-4. The record of the CIC management table 908-4C (FIG. 57) is found, and the message type is rewritten to “CON”. Since the request is a “handover request”, the telephone management server 908-4 then checks the server address table 211X (FIG. 38) and identifies the identification symbol “GWE901-1” and the identification symbol “BS902-5” acquired from the IP packet 227. Is the record “GWE901-1, which is the first row of the server address table 211X excluding the title part.
TES906-4, IA11, BS902-5, EA1, IA1, MBS906-6, IA41, EMB ”. Then, the telephone management server 908-4 is determined by“ TES906-4 ”in the record. Address information (the external IP address is "EA1" and the internal IP address is "IA1") of the radio base station 902-5 determined by the IP address "IA11" of the telephone management server 906-4 and the identification code "BS902-5" and the movement The address information of the proxy telephone server 906-6 (the external IP address is “EMB” and the internal IP address is “IA41”) is obtained.

  The telephone management server 908-4 forms an internal IP packet having the source address "IA13" (address of the telephone management server 908-4) and the destination IP address "IA11". 4 (step B85). However, the internal packet includes a CIC number “CIC-7”, a source telephone number “TN3”, a destination telephone number “TN4”, and information “IA4, EA4, IA44, IA4, IA4, IA44, EMB, IA14, IA401, EA401, 5008, UNI4 "and information" IA1, EA1, IA41, EMB "obtained by the procedure referring to the 211X, and the address" IA11 "of the telephone management server 906-4. The telephone management server 906-4 receives the internal packet, copies the internal packet, and manages the CIC having the CIC number “CIC-7” determined from the source telephone number “TN3” and the destination telephone number “TN4”. A table record 906-4A (FIG. 62) is formed (step B86). Here, the procedure category of the CIC management table 906-4A is “CON” indicating handover and the start time is “St6”.

The telephone management server 906-4 forms an internal IP packet 228 (FIG. 68) requesting an external IP address and a port number for setting a digital voice communication channel set by the handover request. However, the address information (EA1, IA1, EMB, IA41) in the internal IP packet 228 has been obtained in the above procedure. The telephone management server 906-4 transmits the internal IP packet 228 to the proxy mobile phone server 906-6 (Step B87), and the proxy mobile phone server 906-6 forms the internal packet 229 (FIG. 69) from the internal packet 228. Then, the packet is transmitted to the network node device 906-1 (step B88). The network node device 906-1 decapsulates the received internal packet 229 to form an external packet 230 (FIG. 70). The base station 902-5 transmits the request to the station 902-5 (step B89). Upon receiving the request, the radio base station 902-5 assigns an external IP address and a port number for a voice communication path, and stores the radio base station therein. The assignment result is recorded in the address management table 212X (FIG. 39) (step B90). Then, an external packet 231 (FIG. 71) including the external address “EA101”, the port number “5012”, and the wireless channel identification symbol “WC6” as the result of the allocation is formed and transmitted to the network node device 906-1 (step B91). . The network node device 906-1 encapsulates the received external packet 231 using the device control table 910-1, forms an internal packet 232 (FIG. 72), and transmits it to the proxy mobile telephone server 906-6 (step B92). ). The proxy mobile telephone server 906-6 forms an internal packet 233 (FIG. 73) from the received internal packet 222 and transmits it to the telephone management server 906-4 (step B93). The telephone management server 906-4 acquires the wireless line identification code “WC6”, the external address “EA101” and the port number “5012” from the received internal packet 223, and further, the telephone management server 906-4 obtains the terminal gateway address. The management table 211 (in FIG. 37) is rewritten as the end gateway address management table 211Z (in FIG. 37) to obtain the internal address “IA101”, and further obtain “UNI3” in the record corresponding to “IA101”. Then, “WC6, IA101, EA101, 5012, UNI3” acquired as described above is written in the CIC management table 906-4A (FIG. 62), and the result is as shown in the CIC management table 906-4B (FIG. 63).

Steps B81 to B93 described above are included in the range 230 of the steps in FIGS. 32 and 33. In summary, when the mobile telephone 905-6 moves to the position of the mobile telephone 905-6y (FIG. 31), the initial values of the CIC management table 906-4A (FIG. 62) are used before the movement of the mobile telephone 905-6. CIC management table 908-4C.
<< Variation of wireless communication area detection and movement preparation procedure >>
As variations of the steps B81 to B93, the steps B80x and steps B101 to B105 described below can be implemented. When the mobile telephone 905-6 moves and is located within the range where the wireless communication areas 203 and 205 overlap, the mobile telephone 905-6z identifies the terminal gateway 901-3 to which the wireless base station 902-3 connects. The wireless base station 902-3, the wireless base station identification code "BS902-3", the source telephone number "TN3" and the destination telephone number "TN4". Then, it notifies the wireless base station 902-5 (step B80x). The radio base station 902-5 determines that the request is a handover request (step B100), and transmits the acquired identification symbol "GWE901-3" and the telephone numbers "TN3" and "TN4" via the network node device 906-1 (step B101). ), And through the proxy mobile telephone server 906-6 (step B102), notifies the telephone management server 906-4 (step B103). Steps B100 to B103 are the same procedure as steps B90 to B93. The telephone management server 906-4 acquires the identification symbol "GWE901-3" and the telephone numbers "TN3" and "TN4" from the received internal packet, and acquires the identification symbol "GWE901-3" and the telephone management server address table 211X. (FIG. 38), the address "IA13" of the telephone management server 908-4 is obtained. Next, the telephone management server 906-4 notifies the telephone management server 908-4 of the fact that the handover request of the mobile telephone 905-6 (movement from the wireless communication area 203 to the wireless communication area 205) is issued. Numbers “TN3”, “TN4”
And the radio base station 902-3 notifies the address-related information “EA101, 5012, WC6” acquired using the radio base station address management table 212X (step B104), and the telephone management server 908-4 sends the CIC number Communication partner information (IA4, EA4, IA44, EMB, IA14, IA401, EA401, 5008) in the record of the CIC management table 908-4C (FIG. 57) corresponding to the "CIC-7" telephone numbers "TN3" and "TN4". , UNI4) to the telephone management server 906-4 (step B105).

Steps B100 to B105 described above are included in the step range 231 in FIGS. 32 and 33. Subsequent to the completion of step B93 or step B105, the telephone management server 906-4 obtains “IA101, UNI3” using the terminating gateway address management table 211 (in FIG. 37), and stores the server address table 211X (FIG. 38). Address information "EA1, IA1, IA41, EMB" is obtained using the address "IA11" of the telephone management server 906-4 and the obtained various information "WC6, EA101, 5012". -4B (FIG. 63). Note that all telephone management servers in the IP network 900X hold a server address table 211X. Here, the radio base station 902-3 uses a radio base station address management table including the external IP address “EA101”, the port number “5012”, and the radio line identification code “WC6” used for individual voice communication by the mobile phone. The point is that
<< Setting instruction of device control record >>
The telephone management server 906-4 forms an internal packet 234 (FIG. 74) including the IP addresses "IA101, IA401, EA101, and EA401", and sends it to the network node device 906-1 via the table management server 906-3 (step B112). The network node device 906-1 transfers the IP address information to the record "IA101, IA401, EA101, IA101, IA101, IA101" in the third row of the device control table 910-1 (FIG. 54) in the network node device 906-1. EA401, M255, M255, ... "(step B113), and the result is returned (steps B114, B115). Further, the telephone management server 906-4 forms an internal packet 235 (FIG. 75) including the IP address "IA401, IA101, EA401, EA101" and transmits it to the telephone management server 909-4 (Step B120). The server 909-4 receives the internal packet 235, transfers the internal packet 236 (FIG. 76) to the network node device 909-1 via the table management server 909-3 (steps B122 and B123), and the network node device 909- 1 writes the IP address information in the device control table 910-4 (FIG. 53) and returns the result (steps B124 to B126). By confirming the completion of step B115 and step B126 (step B127), the mobile phone 905-6 moves to the location of the mobile phone 905-6y via the location of the mobile phone 905-6z, and it is ready to switch to continue the telephone communication. Complete.
<< Start of switching operation >>
When confirming the switching preparation (step B127), the telephone management server 906-4 forms an IP packet 237 (FIG. 77) including a handover switching instruction and sends it to the telephone management server 908-4 (FIG. 34 and FIG. 35). In step B130), the switching instruction information included in the IP packet 237 passes through the proxy mobile telephone server 908-6 and the network node device 908-1 (steps B131 and B132), and is converted into the IP packet 238 (FIG. 78) by the wireless base station 902. 3 (step B133), and further, the switching instruction information reaches the mobile telephone 915-6z via the wireless communication path 917-5y (in FIG. 31) (step B134). After step B130, the telephone management server 908-4 writes the end time “St3e” to stop using the CIC management table 908-4C (FIG. 57) used before this point, and obtains the resulting CIC management table. Table 908-4D is shown in FIG. The CIC management table 908-4D (FIG. 58) used for terminal-to-terminal communication connection control can be used for charging communication fees and the like, and this is disclosed in Patent Document 2.

  The mobile phone 915-6z returns a report for the switching instruction to the radio base station 902-3 (step B135), and the radio base station 902-3 forms and returns an IP packet 239 (FIG. 79) including the switching report. The switching report reaches the telephone management server 908-4 via the network node device 908-1 and the proxy mobile telephone server 908-6 (steps B136 to B138).

  Next, the switching report is stored in the IP packet 240 (FIG. 80) and reaches the telephone management server 906-4 (step B139). In the same manner as described above, the telephone management server 906-4 forms an IP packet 241 (FIG. 81) including a handover switching instruction and sends it to the proxy mobile telephone server 906-6 (step B141). After passing through the device 906-1 (step B142), the packet reaches the wireless base station 902-5 as an IP packet 242 (FIG. 82) (step B143). Further, the switching instruction is transmitted through the wireless communication path 917-10 (in FIG. 31). The mobile phone 915-6z then arrives (step B144). The mobile phone 915-6z returns a switch report to the radio base station 902-5 (step B146), and the radio base station 902-5 forms and returns an IP packet 243 (FIG. 83) including the switch report, and performs the switch. The report passes through the network node device 906-1 and the proxy mobile telephone server 906-6 (steps B147 and B148), is stored in the IP packet 244 (FIG. 84), and reaches the telephone management server 906-4 (step B149). Further, the telephone management server 906-4 forms an IP packet 245 (FIG. 85) including the handover switching instruction as described above and sends it to the proxy mobile telephone server 909-4 (step B151). The use of the CIC management table 909-4C (FIG. 61) created in step 126 (in FIG. 33) is started (step B152), and a switch completion report of the CIC management table is returned (step B153).

Next, the telephone management server 906-4 sets the capsule control record “IA301, IA401, EA301, EA401, M255 in the third row in the device control table 910-3 (FIG. 52) set in steps B66 and B67. , M255,... ”, And forms and transmits an IP packet 246 (FIG. 86) (step B154). Upon receiving the IP packet 246, the telephone management server 908-4 sends an IP packet including an instruction to end use of the capsule control record to the network node device 908-1 via the table management server 908-3 (steps B157 and B158). The management server 908-4 transfers the IP packet including the use termination designation of the information “EA301,5006, WC3” in the wireless base station address management table 212 (FIG. 39) to the proxy mobile telephone server 908-6 and the network node device 908- 1 to the wireless base station 902-3 (steps B159 to B161). Further, the telephone management server 906-4 (FIG. 53) sets the capsule control record “IA401, IA401,” on the fourth line in the device control table 910-4 (FIG. 53) set in steps B64 and B65 (FIG. 33). The IA301, EA401, EA301, M255, M255,... ”Form and transmit an IP packet 247 (FIG. 87) including an instruction to end the use (step B155). The IP packet 247 including the capsule control record use end instruction is transmitted to the network node device 909-1 via the table management server 909-3 (steps B157x and B158x).
<< Rewriting the phone number server dedicated to mobile phones >>
The telephone management server 906-4 retrieves the internal address information (IA1, EA1, IA41, EMB, IA11, IA101, EA101) related to the telephone number "TN3" from the internal record of the CIC management table 906-4B (FIG. 63). It retrieves its own UNI value "UNI3", forms an IP packet 248 (FIG. 88) containing the telephone number "TN3" and the IP address "IA101, EA101, UNI3" and sends it to the telephone number server 996 dedicated to the mobile telephone. (Step B163) The completion of rewriting according to the contents of the IP packet 248 is reported (Step B164). As a result, the records in the first row of the mobile telephone registration table 210 (FIG. 36) inside the telephone number server 996 are based on “TN3, IA3, EA3, IA43, EMB, IA13, IA301, EA301, UNI3, PID3”. It is changed to "TN3, IA1, EA1, IA41, EMB, IA11, IA101, EA101, UNI3, PID3" (first line excluding the title part in FIG. 89). Therefore, the same result as when the procedure for changing the position of the mobile telephone described later is performed.
<< Distribution of internal IP address from time to time >>
The telephone management server 909-4 can request the telephone number server 996 dedicated to the mobile telephone to additionally request an internal IP address, or return the distributed internal IP address to the telephone number server 996 (step B165, option). The other telephone management server can negotiate with the telephone number server 996 in the same manner as described above, and can request additional distribution or return of the internal IP address (optional).
<< Release Phase >>
The call release phase shown in steps B170 to B192c in FIGS. 34 and 35 is substantially the same as the call connection control procedure of the IP network (steps B70 to B92c in FIG. 6) based on the present invention. This is outlined below.

  When the user of the telephone 905-6y notifies the release of the telephone communication (step B170 in FIG. 34), the release notification is transmitted to the wireless base station 902-5, the network node device 906-1, and the proxy mobile telephone server 906-6. The call is notified to the telephone management server 906-4 via steps B170 to B173, and the telephone management server 906-4 has the line number "CIC-7" in the CIC management table 906-4B (FIG. 63). Write the end time “St6e” in the record end time column. Next, a release IP packet 250 (FIG. 90, REL packet) is formed and notified to the telephone management server 909-4 (step B174), and the telephone management server 909-4 issues a release instruction of the telephone communication to the proxy mobile telephone server 909. -6, and notifies the radio base station 902-4 via the network node device 909-1 (steps B176 to B178). Further, the telephone management server 909-4 writes the end time "St4e" in the end time column of the record whose line number is "CIC-7" in the CIC management table 909-4C (FIG. 61), In order to report that the release IP packet 250 has been received, a release completion IP packet 251 (FIG. 91, RLC packet) is formed and returned to the telephone management server 906-4 (step B184).

Upon receiving the IP packet 251, the telephone management server 906-4 notifies the wireless base station 902-5 of a release instruction (steps B185 to B187). The wireless base station 902-5 can also notify the telephone set 905-6y of the disconnection instruction (step B170-1, optional). On the other hand, the radio base station 902-4 notifies the disconnection instruction to the telephone set 905-8 (step B179) and notifies the release report to the telephone management server 909-4 (steps B181 to B183). The telephone 905-8 can also transmit a disconnection instruction confirmation signal to the wireless base station 902-4 (step B180, option).
<< Deletion of communication record >>
After step B173, the telephone management server 906-4 transmits the line number “CIC-7” written in the release IP packet 250 (FIG. 90) to the table management server 906-3 (step B196), and the table management server Reference numeral 906-3 denotes a corresponding communication record. In this case, the record "IA101, IA401, EA101, EA401, M255, M255,..." In the third row of the device control table 910-1 (FIG. 54) is stored. It is deleted (step B197). Similarly, after step B176, the telephone management server 909-4 extracts the line number "CIC-7" from the IP packet 250 (FIG. 90), and reads the corresponding communication record (device control in this case). An instruction to delete the record "IA401, IA101, EA401, EA101, M255, M255,..." On the second line of the table 910-4 (FIG. 53) is issued (steps B198, B199).
<< Release report option and disconnection of wireless channel >>
Hereinafter, a communication channel release procedure (steps B188a to B192c) connecting the telephone management server, the radio base station, and the mobile phone is performed. This procedure is the same as the communication channel release procedure (steps B88a to B92c) shown in FIG. The same is true.
<< Handover of called mobile phone >>
In the above embodiment, a telephone call is made from the mobile telephone 905-6 to the mobile telephone 905-8, that is, the mobile telephone 905-6 is a calling telephone and the mobile telephone 905-8 is a called telephone. In step B80 (FIG. 32), the mobile phone 905-6 moves from the wireless communication area 203 to the wireless communication area 205, and a handover including switching of the wireless base station to which the mobile phone 905-6 is connected has occurred. That is, handover occurs due to the movement of the calling telephone.

On the other hand, the communication procedure for performing the handover (steps B80 to B165) is not directly related to the communication procedure for controlling the telephone call connection between the calling telephone and the called telephone (steps B01 to B60-4). It can be said that the communication procedure from the mobile telephone 905-6 (calling telephone) and the communication procedure from the mobile telephone 905-8 (calling telephone) are contrasting. For this reason, it is possible to perform a handover by moving the called telephone. For example, a telephone call is made from the mobile telephone 905-6 to the mobile telephone 905-8 to continue telephone communication, and then the mobile telephone 905-8. Moves to the position of the telephone 905-7 belonging to the radio communication area of the radio base station 902-1 (FIG. 1), and moves from the mobile telephone 905-6 to the mobile telephone 905-8y (the mobile telephone moved to the position of the telephone 905-7). 905-8) and telephone communication can be continued. That is, telephone communication is continued through the telephone communication path via the mobile telephone 905-6, the wireless base station 902-3, the terminal gateway 901-3, the terminal gateway 901-2, the wireless base station 902-1, and the mobile telephone 905-8y. it can. However, this is a case where the wireless communication area of the wireless base station 902-1 and the wireless communication area of the wireless base station 902-4 partially overlap. In summary, handover occurs due to movement of the called telephone, and telephone communication can be continued.
<< Variation to move to the wireless base station connected to the same terminal gateway >>
FIGS. 92 to 95 show that the mobile telephone 905-6 is connected to the mobile telephone 905-8 via the radio base station 902-3, the terminal gateway 901-3, the terminal gateway 901-4, and the radio base station 902-4. The communication is continued, and as a next stage, the mobile phone 905-6 moves from the wireless communication area 203 to the wireless communication area 202 (FIG. 31), and the mobile phone 905-6w, the wireless base station 902-2, and the terminating gateway are provided. A communication procedure which can continue telephone communication connecting the mobile telephones 905-8 via the terminal 901-3, the terminating gateway 901-4, and the wireless base station 902-4 is shown. Here, the mobile telephone 905-6w is the telephone 905-6 that has moved into the wireless communication range 202.

  FIGS. 92 and 93 show a communication procedure in a form in which the communication range 901-1x involving the terminating gateway 901-1 is excluded from FIGS. 32 and 33. Similarly, FIG. 94 and FIG. 95 show a communication procedure of a form in which the communication range 901-1x involving the terminating gateway 901-1 is excluded from FIG. 34 and FIG. In FIGS. 92 and 93, steps K1 and K7 indicate the same function as steps K1 and K7 in FIGS. 32 and 33, that is, the procedure for delivering an internal address from the telephone number server 996 dedicated to the mobile telephone. . Also, in FIGS. 92 and 93, steps B01 to B60-4 have the same function as steps B01 to B60-4 in FIGS. 32 and 33, that is, the internal address from the telephone number server 996 dedicated to the mobile telephone. It shows a delivery procedure. 92 and 93, steps B68-1 to B69-5 have the same functions as steps B68-1 to B69-5 in FIGS. 32 and 33, that is, mobile telephones 905-6 and 905-6. 1 shows a telephone communication for transmitting and receiving a digital voice packet between.

  In FIGS. 92 and 95, in step B80 to step B164x, the position of the mobile telephone 905-6 moves to the position of the mobile telephone 905-6w (FIG. 31), and the mobile telephone 905-6w, the radio base station 902-2, A switching procedure (switching procedure 2) of the terminal communication paths of the terminal gateway 901-3, the terminal gateway 901-4, the radio base station 902-4, and the mobile telephone 905-8 is shown. On the other hand, in the switching procedure 1, that is, in FIGS. 32 and 35, in steps B80 to B164, the position of the mobile telephone 905-6 moves to the position of the mobile telephone 905-6y (FIG. 31), and the mobile telephone 905-6y, This is a procedure for switching the telephone communication path of the wireless base station 902-5, terminal gateway 901-1, terminal gateway 901-4, wireless base station 902-4, and mobile telephone 905-8. In the switching procedure 1, the wireless base station 902-5 is replaced with the wireless base station 902-2, the terminal gateway 901-1 is replaced with the terminal gateway 901-3, and the mobile telephone 905-6y is simultaneously replaced with the mobile telephone 905-6w for switching. Procedure 2 is obtained. The steps B86x, B120x, B151x, B164x, etc. shown in FIGS. 92 to 95 perform the same functions as the steps B86, B120, B151, B164, etc. shown in FIGS. 32 to 35, and differ from the terminal gateway. This means that the procedure inside 901-1 is replaced with the procedure inside the terminating gateway 901-3.

92 and 93, the communication procedure is the same as the communication procedure from step B168-1 to step B169-5 and step B170. For the above reasons, handover occurs due to movement of the called telephone, and telephone communication can be continued.
<< Registration of mobile phone number >>
A telephone number registration procedure for using a mobile telephone is shown in FIG. 96, and this registration procedure is a technique in which a part of the telephone number registration procedure of the mobile telephone shown in FIG. This is described below.

The user 990-2 (in FIG. 1) using the mobile telephone 905-6 receives the telephone number “TN3” used by the mobile telephone 905-6, the authentication information “PID3” of the mobile telephone 905-6, and the user name and communication fee. An application is made to the telephone acceptor 991-2 including the payment method (step V1), and is notified to the telephone number server via the user service server 992-2 (in FIG. 1) (steps V2 and V3) (step V4). The telephone number server 996 holds the telephone number “TN3” and the authentication information “PID3” of the mobile telephone 905-6 in the mobile telephone registration table 210 (FIG. 36) inside the telephone number server 996 dedicated to the mobile telephone (step). V5). In step V3, the user service server 992-2 holds the telephone number “TN3”, the authentication information “PID3”, the applied user name, and the communication fee payment method in a database under user service management. "TN3" and "PID3" of the records "TN3, IA3, EA3, IA43, EMB, IA13, IA301, EA301, UNI3, PID3" in the first row excluding the title part of the mobile telephone registration table 210 are the same as those described above. (Steps V1 to V5). The feature is that the telephone acceptor 991-2 of the IP network 900 (FIG. 1) intervenes in the above procedure, and the user of the telephone number “TN3” can be specified, so that the communication fee is reliably charged. .
<< Registration of initial phone position >>
Next, a procedure for registering the initial position of the telephone will be described. The radio base station 902-3 exchanges information with the mobile phone 905-6 to confirm the communication possibility (step V10 in FIG. 96). When the communication possibility is confirmed, the mobile phone 905-6 sets the location registration information. To the wireless base station 902-3 (step V11). The location registration information includes a telephone number “TN3” and authentication information “PID3”. The wireless base station 902-3 forms an external IP packet 271 (FIG. 98) including the location registration information, and transmits it to the network node device 908-1 (step V12). The external IP packet 271 includes the external IP address “EA301” acquired with reference to the wireless base station address management table 212 (FIG. 39), the acquired telephone number “TN3”, the authentication information “PID3”, and the wireless base station 902. 3 identification code “BS902-3”. The external IP packet 271 passes through the network node device 902-3 to become an internal packet 272 (FIG. 99), and the internal packet 272 is sent to the proxy mobile telephone server 908-6 (step V13). Proxy mobile telephone server 908-6 forms internal packet 273 (FIG. 100) from received internal packet 272, and internal packet 273 is sent to telephone management server 908-4 (step V14).

  The telephone management server 908-4 acquires the telephone number “TN3”, the authentication information “PID3”, and various addresses (EA301, IA3, EA3, IA43, and EMB) from the received IP packet 273, and further transmits the internal packet 273. Using the IP address “IA43” (the internal IP address of the proxy mobile phone server 908-6), the terminal gateway address management table 211 (FIG. 37) is searched, and the internal IP address corresponding to the source IP address “IA43” is retrieved. “IA301” and “UNI3” of UNI (user network interface) are obtained, and the telephone number “TN3”, various IP addresses (IA3, EA3, IA43, EMB, IA13, IA301, EA301), the “UNI3”, the “UNI3” Form IP packet 274 (FIG. 101) including PID 3 ″ And transmits it to the telephone number server 996 (step V15). Here, the telephone management server 908-4 has added the address “IA13”.

The telephone number server 996 receives the internal packet 274, and the telephone number server 996 stores the telephone number “TN3” and the authentication information “PID3” held in the telephone number registration step V7 and the telephone number “ TN3 ”and the authentication information“ PID3 ”are compared to determine whether the terminal authentication result is passed or failed (step V16). If it passes, the external IP address “EA301”, the telephone number “TN3”, and the authentication information “PID3” are written in the record of the mobile telephone registration table 210 (FIG. 36). As a result, the records “TN3, IA3, EA3, IA43, EMB, IA13, IA301, EA301, UNI3,“ PID3 ”in the first row excluding the title part of the mobile telephone registration table 210 (FIG. 36) are obtained. The authentication result is reported to the mobile phone 905-6 in the reverse direction (Step V17 to Step V21).
<< Mobile phone position change >>
With the mobile phone's initial location registration procedure completed, the mobile phone 905-6 can change its location and register a new mobile phone location. The mobile telephone having the telephone number “TN8” has completed the procedure of the initial location registration, and the record “TN8, IA8, EA8, IA48, EMB, IA18, IA801, EA801, UNI8, PID8 ". A case where the mobile telephone (telephone number “TN8”) changes its position to the telephone 905-5 (in FIG. 1) will be described with reference to FIG.
The mobile phone 905-5 exchanges information with the radio base station 902-2 to confirm the communication possibility (step V10x). When the communication possibility is confirmed, the mobile phone 905-5 transmits the position change information to the radio base station. The call is transmitted to the 902-2 (step V11x). The location change information includes a telephone number “TN8” and authentication information “PID8”. The wireless base station 902-2 forms an external IP packet 275 (FIG. 102) including the location change information, and transmits it to the network node device 908-1 (step V12x). Thereafter, the same procedure as the initial location registration of the mobile telephone is performed (step V13x, step 14x), and the telephone management server 908-4 forms an internal packet 276 (FIG. 103) and transmits it to the telephone number server 996 (step V13x). 15x). The result of the authentication is reported to the mobile phone 905-6 in the reverse direction (Step V17x to Step V21x). The telephone number server 996 receives the internal packet 276, and the record “TN8, IA8, EA8, IA48, EMB, IA18, IA851, EA801, UNI8, PID8” in the third row of the mobile telephone registration table 210 (FIG. 36) is It is rewritten as the mobile telephone registration table 210X (FIG. 89) (step 16x). Here, the rewriting to the internal IP address “IA851” is changed and designated by the internal IP address “IA851” in the IP packet 276.
<< Root phone number server >>
Another method of implementing mobile telephone communication in which the IP network 900X (FIG. 31) is enlarged will be described with reference to FIG.

  259-1 to 259-3 are IP networks, 260-1 to 260-5 are radio base stations, 261-1 to 261-3 are media routers, 962-1 to 964-3 are terminating gateways, 263-1 to 263 -3, a relay gateway; 264-1 to 254-3, a mobile telephone; 265-1 to 265-3, a fixed telephone; 996-1 to 996-3, a telephone number server dedicated to a mobile telephone; It is a dedicated route telephone number server. The relay gateways are connected by an IP communication line. The IP networks 259-1 to 259-3 are individually managed by, for example, a communication carrier.

The terminal gateways 262-1 to 262-5 are configured to include servers similar to the terminal gateway 901-1 (FIG. 1), and include, for example, individual telephone management servers and proxy mobile telephone servers. The relay gateways 263-1 to 263-4 are described in Patent Literature 2 as relay gateways that connect IP networks by an IP communication line. In the present embodiment, the telephone number servers 996-1 to 996-3 dedicated to the mobile telephone have the same functions as the telephone number server 996 dedicated to the mobile telephone, and the telephone numbers within the IP networks 259-1 to 259-3 respectively. A process of replying an IP address or the like from a number is performed. The fact that the root telephone number server 996-4 can perform processing such as transmitting and receiving telephone packets from the telephone number servers 996-1 to 996-3 and returning an IP address from the telephone number will be described in Japanese Patent Application Laid-Open No. H10-163,898. This is the same as the drawing in FIG. For example, an answer can be obtained from the telephone number server 996-1 via the root telephone number server 996-4, inquiring about an IP address or the like corresponding to the telephone number "TN30" managed by the telephone number server 996-2. (FIGS. 105 and 106).
<< Summary of Phone Number Servers for Multiple Mobile Phones >>
The IP network is composed of a plurality of IP networks N1,..., Nk (k = 1, 2,...), And the IP network Nm and the IP network Nn are connected directly via IP communication lines or other IP networks. The IP network Nm includes a telephone number server Nm dedicated to a mobile telephone, and the root telephone number server dedicated to a mobile telephone is included in any of the IP networks Nm. The telephone number server Nm can obtain the IP address and the related information related to the telephone number of the telephone number server Nn via the root telephone number server dedicated to the mobile telephone, and manage the root telephone dedicated to the plurality of mobile telephones. Using the server, the mobile telephone 1 performs the telephone communication through the communication path of the mobile telephone 1-the wireless base station 3-the IP network Nm-the IP network Nn-the wireless base station 2-the mobile telephone 2 or the fixed telephone 2. It moves within the range of the wireless communication area 3 of the wireless base station, and continues telephone communication with the mobile telephone 1-the wireless base station 3-the IP network Nm-the IP network Nn-the wireless base station 2-the mobile telephone 2 or the fixed telephone 2. (Handover) is possible.
<< Phone call from fixed telephone to mobile telephone >>
FIG. 107 shows a connection control procedure from the fixed telephone 905-1 to the mobile telephone 905-8 disclosed in Patent Document 2. The communication procedure in the left half of FIG. 107 indicates a call connection control procedure in which the telephone set 905-1 (FIG. 1) is the calling side, and is similar to the communication procedure in the left half of FIG. The communication procedure in the right half of FIG. 107 indicates a call connection control procedure in which the telephone set 905-8 (FIG. 1) is the receiving side, and is the same as the communication procedure in the right half of FIG. With this configuration, call connection control from the fixed telephone 905-1 to the mobile telephone 905-8 can be performed, and telephone communication can be performed between the telephones.

A telephone call is made from the fixed telephone 905-1 to the mobile telephone 905-8, and the mobile telephone 905-8 moves to the position of the telephone 905-7 (FIG. 1) belonging to the wireless communication area of the wireless base station 902-1. It is possible to continue telephone communication from the mobile telephone 905-8 to the mobile telephone 905-8y (the mobile telephone 905-8 moved to the position of the telephone 905-7). That is, telephone communication can be continued via a telephone communication path via the fixed telephone 905-1, the media router 903-1, the terminal gateway 901-1, the terminal gateway 901-2, the wireless base station 902-1, and the mobile telephone 905-8y. . However, this is a case where the wireless communication area of the wireless base station 902-1 and the wireless communication area of the wireless base station 902-4 partially overlap. In summary, in telephone communication between a fixed telephone and a mobile telephone, handover occurs due to movement of the called mobile telephone, and telephone communication can be continued.
<< Handover when calling from a mobile phone to a fixed phone >>
108 to 111, the mobile telephone 905-6 is the calling telephone, the fixed telephone 905-4 is the receiving telephone, and the mobile telephone 905-6 moves from the wireless communication area 203 (FIG. 31) to the wireless communication area 205 (FIG. 31). A communication procedure (hereinafter, referred to as a communication procedure 108) in a case of performing a handover is described. On the other hand, in FIGS. 32 to 35, the mobile telephone 905-6 is the calling telephone, the mobile telephone 905-8 is the called telephone, and the mobile telephone 905-6 is moved from the wireless communication area 203 (FIG. 31) to the wireless communication area 205. The communication procedure for the case of moving (hereinafter referred to as communication procedure 32) is described. In the communication procedure 32, the receiving telephone is the mobile telephone 905-8, and the communication procedure 108 is changed to the fixed telephone 905-4 (FIGS. 108 to 111). Are the same.

The first difference between the communication procedures shown in FIGS. 108 to 111 in accordance with the change to the fixed telephone is that the telephone management server 908-4 performs steps B07, B08, B07y, B08y (FIG. 108, FIG. 109) and steps B07x and B08x (FIGS. 32, 33) for searching for a telephone number. The second difference in the communication procedure is the difference in the communication procedure 901-4x inside the terminating gateway 901-4. Since the receiving-side telephone is the fixed telephone 905-4, the authentication procedure necessary for the mobile telephone ( Steps B26, B27a to B28d, B204 to B206, B190a to B192c, etc. in FIG. 33 are omitted. The other communication procedures other than the above are not changed, and the essence of the call connection control is not changed. Because of this, call connection control from the mobile telephone 905-6 to the fixed telephone 905-4 can be performed, and telephone communication can be performed between the telephones. In this way, in telephone communication between the fixed telephone and the mobile telephone, handover occurs due to movement of the called mobile telephone, and telephone communication can be continued.
<< Handover of mobile telephone calling a fixed terminal >>
Examples of handover in which a mobile telephone 905-6 (FIG. 31) communicating with a fixed telephone 905-4 moves from a position 905-6 to a position 905-6y will be described with reference to FIGS. 108, 109, 110, and 111. With reference to the above. In the following, an embodiment in which the fixed telephone 905-4 (FIG. 31) is switched to the IP terminal 905-17 in this embodiment will be described. Here, both the fixed telephone 905-4 and the IP terminal 905-17 are connected to the media router 903-4 (FIG. 31). This will be described with reference to FIGS. 108, 112, 110, and 113.

  First, since FIG. 109 and FIG. 112 are similar, their differences will be confirmed. The fixed telephone 905-4 shown in FIG. 109 is switched to the IP terminal 905-17 in FIG. 112, and the steps "A25" and "A40" related to the telephone 905-4 shown in FIG. , “A50”, “A60”, “B68-5”, and “B69-1” are converted into steps “A25x”, “A40x”, “A50x”, “A60x” related to the IP terminal 905-17 shown in FIG. , "B68-5x", and "B69-1x". Further, since FIG. 111 and FIG. 113 are similar, their differences are confirmed. The fixed telephone 905-4 shown in FIG. 111 is switched to the IP terminal 905-17 in FIG. 113. With this switching, steps "B168-5", "B" related to the telephone 905-4 shown in FIG. B169-1, "A179" and "A180" are switched to steps "B168-5x", "B169-1x", "A179x" and "A180x" related to the IP terminal 905-17 shown in FIG. I have.

  Thus, the IP terminal 905-17 executes the steps "A25x", "A40x", "A50x", "A60x", "B68-5x", "B69-1x", and further executes "B168-1x". By executing “−5x”, “B169-1x”, “A179x”, and “A180x”, in the telephone communication from the mobile phone 905-6 to the IP terminal 905-17, the handover due to the movement of the mobile phone 905-6 is prevented. It can be explained that telephone communication can be continued even when it occurs. The fact that the mobile telephone 905-6 can perform a handover from the position 905-6 (FIG. 31) to 905-6y is described with reference to FIGS. 108, 109, 110, and 111. The communication procedure described in (1) is adopted as it is.

The IP terminal 905-17 can provide various data (step B69-1x, step B169-1x) in response to a request (step B68-5x, step B168-5x) from the mobile phone 905-6. is there. That is, the IP terminal 905-17 can function as a data providing server for providing various data or a WWW server in response to a request from the mobile telephone 905-6.
<< Summary >>
A plurality of telephone management servers are installed to continue communication between terminals while moving the geographical position of telephones, wireless terminals, and audio / video devices connected to the IP network. Perform a series of call connection control procedures. The IP network can perform inter-mobile telephone communication between the mobile telephone 1 and the mobile telephone 2 and telephone communication between the mobile telephone and a fixed telephone or an IP terminal via the IP network. Can perform handover communication in which at least the wireless base station is changed during telephone communication to continue telephone communication. When the handover is performed, the internal address, which is the position information of the telephone after moving, is rewritten as a record in the mobile telephone registration table inside the telephone number server dedicated to the mobile telephone.

  The mobile phone 1 within the range of the wireless communication area 1 of the wireless base station 1 communicates with the terminal 2 via the mobile phone 1-wireless base station 1-terminal gateway 1-terminal gateway 2-wireless base station 2-terminal 2. While continuing the telephone communication (the terminal 2 can be a mobile telephone, a fixed telephone, or an IP terminal), the mobile telephone 1 moves to a geographical position where it communicates with the radio base station 3 managed by the terminating gateway 3; That is, a method (handover technique) of continuing communication with the terminal 2 via the mobile telephone 1-the wireless base station 3-the terminal gateway 3-the terminal gateway 2-the terminal 2-is solved. When performing a handover, the mobile telephone 1 can be either a calling telephone that calls the terminal 2 of the other party or a called telephone that is called from the terminal 2 of the other party.

  Further, the mobile telephone 1 within the range of the wireless communication area 1 of the wireless base station 1 passes through the mobile telephone 1—the wireless base station 1—the terminal gateway 1—the terminal gateway 2—the wireless base station 2—the terminal 2; While the telephone communication with the mobile base station 2 is continued (the terminal 2 can be any of a mobile telephone, a fixed telephone, and an IP terminal), the mobile telephone 1 moves to a geographical position where it communicates with the radio base station 2, that is, A method of continuing communication with terminal 2 via 1-wireless base station 2-terminal gateway 1-terminal gateway 2-wireless base station 2-terminal 2 is solved.

A CIC management table including at least a line number for identifying a logical communication path for terminal-to-terminal communication, a source telephone number, and a destination telephone number, is used for terminal-to-terminal communication connection control. The initial value of the CIC management table newly used by the mobile phone after the movement is obtained by referring to the CIC management table used by the mobile phone before the movement. The wireless base station uses a wireless base station address management table including at least an external IP address, a port number, and a wireless line identification symbol used for voice communication. A server address table including address information of the telephone management server, the wireless base station, and the mobile proxy telephone server is held inside the terminating gateway and used for connection control. The telephone management server holds a terminal gateway address management table, records an internal IP address used to encapsulate an external packet for voice communication in the terminal gateway address management table, and is using the internal IP address. And is managed separately. The password held in the mobile telephone registration table in the telephone number server dedicated to the mobile telephone is used for authentication of the originating telephone or the receiving telephone.
<< Relation with Patent Documents >>
The IP network includes two or more terminating gateways, and the terminating gateway includes a network node device. An external IP packet is converted into an internal packet in the ingress network node device and transferred in the IP network, and is internally transmitted in the egress network node device. The external IP packet is restored from the packet and transferred outside the IP network. It is also possible to perform telephone communication between a mobile telephone and a fixed telephone or an IP terminal via an IP network, and it is assumed that an IP network that enables both communication between mobile telephones and communication between mobile telephones is possible. The present embodiment is characterized in that a new communication procedure for performing a handover of a mobile telephone is applied to the disclosed IP network.

3. Third Embodiment of Setting and Release of Communication Record In response to a request from a user, a communication record (also referred to as a capsule control record) used to convert an external IP packet or an internal packet from one to the other is stored in the network node device. A third embodiment for setting and releasing will be described. The communication path setting method described with reference to FIG. 12 is detailed, and a communication path setting rejection function is provided.

In FIG. 114, 300 is an IP network, 301 to 303 are terminating gateways, 304 to 307 are LANs, 308 and 309 are network node devices, 310 and 311 are terminating controllers, 312 and 313 are path setting servers, 314 and 315 are Table management servers, 316 and 317 are path management servers, 318 and 319 are domain name servers, 321 is accepted, 322 is a user service server (USS), 323 is an open connection server (OCS), 324 is a resource management server (RMS;
Resource management server (325) is a domain name server, and 359 is a gateway. The terminal gateways 301 to 303, the user service server 322, the open connection server 323, the resource management server 324, the domain name server 325, and the gateway 359 are indirectly connected via an internal communication line or a router inside the IP network 300. Can exchange information by transmitting and receiving IP packets. 326 is a user, 327 and 328 are terminals having an IP packet transmission / reception function, and 332 and 333 are media routers (MR). 336 is a logical terminal to which an internal address “IA1” is assigned, and is connected to the media router 332 via the external communication line 334. Similarly, reference numeral 337 denotes a logical terminal to which an internal address “IA2” is assigned, and is connected to the media router 333 via the external communication line 335. The terminals 327 and 328 can be audio / video transmitters (or video image transmitters, receivers, and fax terminals) that can digitize and transmit voice and image data, or telephones that can digitize and transmit voice. . The audio image transmitting device may be a still image or a moving image. In the case of a moving image, the terminals 327 and 328 are TV transmitters for transmitting digitized sound or moving image, or TV receivers for receiving sound or moving image.
<< Registration of terminal to IP network >>
Next, a procedure for registering the user terminal 327 in the domain name server 318 inside the IP network 300 will be described. The user 326 managing the terminal 327 applies to the reception 321 with the IP address (external address “EA1”) set in the terminal 327 attached (step S1 in FIG. 115). The application content is delivered to the open connection server 323 via the user service server 322 (steps S2 and S3). In performing the above procedure, the user service server 322 determines a terminal location identifier “URL1” for identifying the terminal 327 managed by the user 326 according to a rule that is unified inside the IP network 300, and determines the terminal location identifier “URL1”. "To the user 326. Further, the resource management server 324 notifies the open connection server 323 of the internal IP address “IA1” assigned to the logical terminal 336 at the end of the communication line 334 connected to the terminal 327 (step S4). The open connection server 323 stores, in the domain name server 318, a set of the terminal location identifier “URL1”, the external IP address “EA1”, and the internal IP address “IA1” related to the terminal 327 inside the domain name server 318. It is instructed to hold (step S5).

  Next, the open connection server 323 instructs via the table management server 314 to set the communication records “IA1, IA81, EA1, EA8, MK, MK” in the capsule control table 330 in the network node device 308. (Steps S6 and S7). The communication record is a record in the first row of the device control table 330. Here, the external IP address of the path setting server 312 is represented by “EA8”, and the internal IP address is represented by “IA81”. The “MK” represents a mask whose bit values are all “1”. The record in the first line is used for IP encapsulation of an IP packet related to setting and release of a path transmitted by the terminal 327, and will be described later in detail. By the same procedure as described above, the user terminal 328 (the external IP address is “EA2”) is registered in the domain name server 319, and the record “IA2, IA82, EA2, EA8, MK, MK” in the first line of the device control table 331 is registered. MK ”.

Note that the terminal 328 is provided with a terminal location identifier “URL2”. The terminal location identifiers “URL1” and “URL2” are open to all terminals and users outside the IP network 300. In this case, the terminal “URL1” specifies the terminal 327, and the terminal “URL2” specifies the terminal 328. The terminal location identifier can adopt a naming rule of a universal resource location identifier (URL).
<< Dynamic setting and release of communication path >>
A communication path in the IP network 300 to which the internal packet is transferred, for example, a logical communication path connecting the logical terminals 336 and 337 is called a communication path (or simply, a path). A method of setting a communication path connecting the logical terminals 336 and 337 by setting communication records in the device control tables 330 and 331 and a method of releasing the communication path will be described with reference to FIG.

  The terminal 327 sends out a path setting request packet 340 (FIG. 117) including at least “URL1” and “URL2” (step U1 in FIG. 116), and the path setting request packet 340 passes through the media router 332 (step U2), arrives at the network node device 308, where the record “IA1, IA81, EA1, EA8, MK, MK” in the first row in the device control table 330 (FIG. 114) is used and the capsule is used. It becomes an internal packet 341 (FIG. 118). The internal packet 341 reaches the path setting server 312 (step U3), where it is converted into an internal packet 342 (FIG. 119) and reaches the path management server 316 (step U4). The path management server 316 forms a question packet 343 (FIG. 120) including the “URL1” and “URL2” included in the received packet 342 and sends it to the domain name server 318 (step U5), and the answer packet 344 ( (FIG. 121) is received (step U6). The answer packet 344 includes addresses “EA1, IA1” corresponding to “URL1” and addresses “EA2, IA2” corresponding to “URL2”. It should be noted that the domain name server 318 can also make inquiries to the upper domain name servers 325 and 355 as necessary (steps U5-1 to U5-4).

  The path management server 316 forms a packet 345 (FIG. 122) including the acquired related information of the terminal 327 and the terminal 328, that is, “URL1, URL2, IA1, IA2, EA1, EA2” and transmits the packet 345 to the path management server 317. (Step U7). Here, the internal IP addresses of the path management servers 316 and 317 are “IA91” and “IA92”, respectively.

  Upon receiving the packet 345, the path management server 317 examines the path setting rejection table 346 (FIG. 123) held in the path management server 317, and determines whether the terminal having "URL2" is in communication with the terminal using "URL1". It is checked whether or not the setting of the path used for this communication has been rejected (step U8). In this case, the record on the first line excluding the title part of the path setting rejection table 346 is “URL2; URL8, URL12”, and the communication path setting between “URL2” and “URL1” is rejected. Absent. The path management server 317 sends an internal packet 347 (FIG. 124) including the inspection result to the path management server 316 (Step U9).

  Since the path management server 316 can set a communication path used for communication between the terminal “URL1” and the terminal “URL2”, the addresses “IA1, IA2, EA1” related to “URL1” and “URL2” can be set. An internal packet 348 (FIG. 125) including the setting content is sent to the table management server 314 so that a communication record including EA2 "is set in the network node device 308 (steps U10 and U11). Further, the path management server 316 notifies the terminal 327 of the completion of the path setting (steps U12 to U15). Thus, the records “IA1, IA2, EA1, EA2, MK, MK” in the second row of the device control table 330 (FIG. 114) are set. Further, the path management server 317 instructs the table management server 315 to set a communication record in the network node device 309 (steps U10-2, U11-2). Similarly, the path management server 317 notifies the terminal 328 of the setting of the communication path (steps U12-2 to U15-2). Thus, the record “IA2, IA1, EA2, EA1, MK, MK” in the second row of the device control table 331 (FIG. 114) is set. With the above procedure, the setting of the communication path connecting the logical terminal 336 and the logical terminal 337 is completed, and the transmission and reception of the IP packet between the terminal 327 and the terminal 328 become possible.

  In FIGS. 114 and 116, a packet 349 (FIG. 126) is transmitted from the terminal 327 to the terminal 328, and the packet 349 reaches the network node device 308 via the media router 332 and further via the communication line 334 (step V1 and V2) and the packet 349 are encapsulated by using the communication record “IA1, IA2, EA1, EA2, MK, MK” in the second line excluding the title part in the set device control table 330. The internal packet 350 is transferred through the IP network 300 and reaches the network node device 309 (step V3), and the internal packet 350 is transferred from the internal packet 350 to the packet 349 (FIG. 126) in the network node device 309. ) Is restored, and via the communication line 335 and the media router 333 (step V4), the terminal To reach the 28 mentioned setting contents (Step V5). The communication in the opposite direction, that is, the IP packet transmitted from the terminal 328 reaches the terminal 327 via the media router 333, the network node device 309, the inside of the IP network 300, the network node device 308, and the media router 332. (Steps V6 to V10). The record “IA2, IA1, EA2, EA1, MK, MK” in the second line excluding the title part in the set device control table 331 is used to encapsulate the packet transmitted from the terminal 328. Has been. Further, the confirmation of the source address "EA1" is useful for confirming the identity of the source terminal and collecting communication charges (charging).

  The procedure for releasing the communication path connecting the set logical terminals 336 and 337 is as follows. The terminal 327 sends out a path release request packet 351 (FIG. 128) including at least the “URL1” and “URL2” (step U20), and the path release request in the packet 351 is transmitted to the media router 332 and the network node device 308. Reach the path management server 316 via the path setting server 312 (steps U21 to U23). The path management server 316 via the table management server 314 deletes the record “IA1, IA2, EA1, EA2, MK, MK” in the second line set in the device control table 330. In addition to notifying the device 308 (steps U25 and U26), the terminal 327 is notified of the completion of release of the set communication path (steps U27 to U30).

Subsequent to step U23, the path management server 316 forms a path release request packet 352 (FIG. 129) including at least the "URL1" and "URL2", and notifies the packet 352 to the path management server 317 (step U24). . The path management server 317 instructs to delete the set record “IA2, IA1, EA2, EA1, EA1, MK, MK” in the second line in the device control table 331 (steps U25-2, U26-2). The release of the set communication path is notified to the terminal 328 (steps U27-2 to U30-2).
<< Procedure for rejecting communication path setting >>
The terminal 328 stores the terminal location identifier “URL12” of the communication partner whose path setting is to be rejected in the packet 353 (FIG. 130) and sends out the path setting rejection request. It reaches the path management server 317 via 313 (steps U31 to U34). The path management server 317 writes the request content into the path setting rejection table 346 (FIG. 123) held inside the path management server 317 (step U35). The first line of the path setting rejection table 346 (FIG. 123) excluding the title portion indicates that the terminal having “URL2” sets the path between the terminal having “URL8” and the terminal having “URL12”. Indicates refusal. Similarly, a packet containing a path setting rejection request can be sent from the terminal 327 and written in the communication path setting rejection table held inside the path management server 316 (steps U41 to U45).
<< Other methods for determining communication path setting >>
Another method of determining the communication path setting will be described. FIG. 131 illustrates an example of assigning a terminal location identifier in a tree structure, in which 354-1 is a root domain, and the name of the domain 354-1 is “root”. Domain 354-1 has three subordinate domains, namely, "aa", "bb", and "cc", and domain "aa" has subordinate domains "pp", "qq", and "rr". , Domain “bb” has domains “ss” and “tt” under its domain, domain “pp” has hosts “H1” and “H2” under its domain, and so on.

  Hosts “H1”, “H2”... Are, for example, terminals and computers, and hold IP addresses. The URL of the host 354-4 is “H4.uu.ss.bb.root”, the URL of the domain 354-2 is “aa.root”, and the URL of the domain 354-3 is “ss.bb.root”. It is. It specifies that specifying a higher-level domain specifies all lower-level domains and hosts.

  FIG. 132 shows another step performed in place of the communication path setting step U8 (FIG. 116), which will be described next (optional). The path management server 317 receives the packet 345 (FIG. 122) (Step U7 in FIG. 116). The packet 345 requests setting of a communication path from the terminal “URL1” to the terminal “URL2”. Here, the specific host name of “URL1” is “H1.pp.aa.root”.

  The path management server 317 checks the path setting permission table 354-10 (FIG. 133) as step 354-11 (FIG. 132). The record in the first line is “URL2, aa.root” and has the following meaning. In other words, if the condition that the terminal location identifier of the source terminal (“H1.pp.aa.root” in this case) is included in the domain “aa.root” is satisfied, the destination terminal “URL2” This means that the setting of a communication path with the terminal is permitted. In this case, “H1.pp.aa.root” is included in the domain “aa.root”.

The path management server 317 determines that the above condition is satisfied, and then proceeds to step 354-13. Next, the path management server 317 checks the path setting rejection table 346 (FIG. 123) (step 354-13). The procedure of Step 354-13 is the same as the communication path setting procedure described in Step U8 (FIG. 116). The third line of the path setting permission table 354-10 (FIG. 133) includes “URL9,“ all
The process proceeds from step 354-11 to step 354-13 regardless of the value of the terminal location identifier on the source terminal side. If the setting of the communication path is not rejected, the preparation for setting the communication record is made. If it is determined that the setting of the communication path is not permitted (steps 354-12, 354-14), the communication record is not set (step 354-16).
<< Relationship between DNS and Connection of Multiple IP Networks >>
FIG. 134 shows the hierarchical structure of the domain name servers. The domain name servers 325, 356, and 357 are located below the root domain name server 355. The domain name server 325 has domain name servers 318 and 319 (FIG. 114) positioned below it. FIG. 135 shows a state in which the IP networks 300, 300-1, and 300-2 are connected by a communication line. The IP network 300 includes a domain name server 325, and the IP network 300-1 includes a domain name server 356. The IP network 300-2 includes a root domain name server 355, and the IP network 300-1 further includes a root domain name server 355. As described above, information can be exchanged between the domain name servers as shown in steps U5-1 to U5-4 (FIG. 116).
<< Variation where the internal packet does not include the source address >>
A variation will be described in which the internal packet includes the internal destination address but does not include the internal source address. The communication network 300X (FIG. 136) has a substantially similar structure to the IP network 300 (FIG. 114). The internal packet 350X (FIG. 136) is an MPLS (Multi
The MPLS frame includes a destination address but does not include a source address. The main difference between the communication network 300X (FIG. 136) and the IP network 300 (FIG. 114) is that the network node device 308 is a network node device 308X, and the network node device 309 is a network node device 309X. The external packet 349 is input to the network node device 308X from the logical terminal 336X at the end of the communication line 334, converted into an internal packet 350X using the control table 330X, and transferred to the inside of the communication network 300X. Similarly, the internal packet 350X is input to the network node device 309X, restored as an external packet 349-2, and transmitted to the communication line 335 via the logical terminal 337X. The terminal gateway 301X (FIG. 136) has substantially the same structure as the terminal gateway 301 (FIG. 114), and differs from the terminal gateway 301X in that the terminal gateway 301X does not include the network node device 308 but includes a network node device 308X instead. The terminal gateway 302X is similar to the above, and does not include the network node device 309 but includes the network node device 309X. The inside of the communication network 300X is different from the inside of the IP network 300, but the outside of the communication network 300X is not different from the outside of the IP network 300. A technique for implementing an internal packet using an MPLS frame is disclosed in Example 7 of Patent Document 2 and the like. Because of this, a terminal can be registered in the communication network 300X, and a communication record can be dynamically set and released for communication between two terminals by setting and releasing a communication record. A path setting rejection registration is possible, and a communication network 300X for setting or releasing a communication record according to a request from a user can be implemented.

The feature of this variation is that the internal packet of the communication network includes the external packet of the communication network, the external packet can be restored from the internal packet, and the internal packet includes the internal destination address and does not include the internal source address. For example, an optical communication network is constructed, and an optical frame inside the optical communication network includes an external IP packet (however, the optical frame includes an internal destination address and does not include an internal source address). A communication network capable of restoring IP packets can also be used.
<< Internal packet has the same variation as external packet >>
The communication network 300Y (FIG. 137) has substantially the same structure as the IP network 300 (FIG. 114), except that an external packet is used as it is as an internal packet. The main difference is that the network node devices 308 and 309 are network node devices 308Y and 309Y, respectively. The device control tables 330 and 331 have different record formats, and are respectively device control tables 330Y and 331Y. The external packet 349 transferred through the communication line 334 is input from the logical terminal 336Y (identification name “ID1”) to the network node device 308Y, and the addresses (source address “EA1”, destination address “EA2”) in the external packet 349 are provided. ) Is registered in the device control table 330Y.

  In this case, the record in the second row of the device control table 330Y is “ID1, EA1, EA2”, and the address included in the record matches the external packet (address match). 350Y. In the case where the address match is not established, the external packet 349 is discarded. The internal packet 350Y is transferred inside the communication network 300Y, reaches the outgoing network node device 309Y, becomes an external packet 349-2, and the external packet 349-2 passes through the logical terminal 337Y (identification name “ID2”). And transmitted to the communication line 335.

  In this variation, the domain name server includes the terminal's URL and external address, but does not include the internal address associated with the terminal. In this case, the record in the second row of the device control table 330Y is “ID1, EA1, EA2”. As described above, the record of the device control table includes at least the identification name “ID1” of the logical terminal input by the external packet, the source address “EA1” and the destination address “EA2” of the external packet. As described above, the format of the internal packet is the same as the format of the external packet. However, the terminal is registered in the communication network 300Y, and the procedure of permitting the setting of the communication path and rejecting the setting of the communication path for the communication between the two terminals is performed. It is possible to dynamically set and release a communication path, and to implement a communication network 300Y for setting and releasing a communication record in response to a request from a user.

In this variation, it is also possible to change the record of the device control table to “ID1, EA1” and confirm only the source address “EA1” without including the destination address “EA2”. Confirmation of the source address "EA1" is useful for confirming the identity of the source terminal and collecting communication charges (charging). Further, a mask technique shown by the expression (1) can be introduced as a conventional technique into a record of the apparatus control table.
<< Specification of port number >>
In this embodiment, the terminal 327 and the terminal 328 can transmit and receive a TCP packet to a UDP packet, and do not permit other packets to be transmitted and received. That is, the specification of the upper layer protocol of the IP packet can also permit passage of only TCP and UDP. As the port number, a value determined in advance as a rule inside the IP network can be used. It is determined that the terminal 328 can receive and reply only in any one of the port numbers 20 and 21 (FTP), 25 (SMTP), 80 (HTTP), and 4000. Here, the port number “4000” is a value determined and used as a port number specific to the data exchange service using the public URL of the present embodiment. The use of port number 23 (Telnet) or other port numbers is prohibited to prevent unauthorized access from a communication partner. The specification of the upper layer protocol and the specification of the port number can be performed using the functions (protocol filter and port filter) of the network node device disclosed in the seventh embodiment of Patent Document 2. That is, it can be implemented by setting a record of the device control table in the network node device so as to select a specific protocol or a specific port number.
<< Delivery of content data to multiple terminals >>
138, reference numeral 300-5 denotes an IP network, reference numerals 301-10 to 301-12 denote terminating gateways, reference numerals 400 to 404 denote terminals having an IP packet transmission / reception function, and reference numeral 405 denotes a domain name server. The terminal 400 is also a content delivery server having a data delivery function. The IP network 300-5 includes various servers described in the present embodiment, such as a path setting server and an open connection server, but omits them. Each of the terminals 400 to 404 has an individual terminal location identifier (URL) and an IP address for identifying each terminal, and the terminals 400 to 404 are registered in the IP network 300-5. That is, the URL and IP address of each terminal are registered in any one of the domain name servers in the terminal gateway servers 301-10 to 301-12 in the IP network 300-5. Accordingly, the URL of each terminal in the domain name server in the terminating gateway server can be called from the domain name server 405. The terminal 400 and the terminal 401 have set the communication path between the terminal 400 and the terminal 401 by the method described above in the present embodiment, and the terminal 400 and the terminal 402 have set the communication path of both terminals. The same applies to the following, and the terminal 400 and the terminal 404 set a communication path between the two terminals.

  With this configuration, the terminal 400 can reliably transmit the IP packet including the content data to the terminal 401 and receive the reception confirmation of the IP packet (step 406 in FIG. 139). Transmits the IP packet to the terminal 402 reliably and receives the reception confirmation of the IP packet (step 407), and so on. The terminal 400 surely transmits the IP packet to the terminal 404 and transmits the IP packet to the terminal 404. A reception confirmation is received (step 409). As described above, since the URL of the communication partner is registered in the IP network 300-5 on the side of the terminal 400, it is easy to confirm the identity of the terminal, and therefore, charging for the distributed content data is reliable. Furthermore, since access from a terminal for which a communication path has not been set can be suppressed, communication with information security can be expected. The content data transmitted by the terminal 400 can be content data for providing information, and can be, for example, an electronic newspaper, stock price information guide, product description material, and the like. In addition, it is also possible to transmit and receive data between terminals, such as a correspondence education or the like, in which the terminal 400 transmits a test question and the terminal 401 responds to the test. The terminal 400 can also reject the transmission of the content data by rejecting the setting of the communication path with the terminal that is not desired. These terminals are installed inside the LAN. The LAN can be not only a LAN of a company or the like, but also a home LAN (information home appliance LAN).

In summary, the terminal 1 can set a communication path with a plurality of terminals-j (where j = 1, 2,..., N), and the terminal 1 can distribute contents to the plurality of terminals-j. Since the individual URL and IP address of the terminal are registered in the IP network, the identity of the terminal is clear, and therefore, charging for the distributed content data can be ensured. Since access from a terminal that has not been set up or a terminal that has not set a communication path can be excluded, communication with high information security can be secured.
<< Public server >>
140, reference numeral 300-6 denotes an IP network, reference numerals 301-20 to 301-22 denote terminating gateways, reference numerals 410 to 414 denote terminals having an IP packet transmission / reception function, and reference numeral 415 denotes a domain name server. The terminal 410 is positioned as a public server by registering its terminal location identifier (URL) in the IP network 300-6, and is, for example, a WWW server including a data providing function, and executes a specialized program or the like. An ASP server, which is a data storage server that stores data of a terminal on the user side. The IP network 300-6 includes various servers described in the present embodiment, such as a path setting server and an open connection server, but omits them. The terminals 410 to 414 have individual URLs and IP addresses for identifying each terminal, and the terminals 410 to 414 are registered in the IP network 300-6. Therefore, the URL of each terminal in the IP network can be called from the domain name server 415.

  The terminal 411 establishes a communication path with the terminal 410 by the method described above in this embodiment, and then accesses the contents of the home page provided by the terminal 410 and collects the contents. (Step 416 in FIG. 141). The terminal 412 sets a communication path with the terminal 410, and then the terminal 412 can access and collect the contents of the home page provided by the terminal 410 (step 417). Terminal 414 sets a communication path with terminal 410, and terminal 414 can then access terminal 410 and collect the contents of its home page (step 419). The terminal 410 rejects the home page access to the terminal 410 by using the communication path setting rejection function described in the present embodiment to reject the setting of the communication path with the terminal that is not desired. You can also. The specialized programs provided by the terminal 410 include, for example, an architectural design program (for architectural design offices), a product purchase management program (for convenience stores in which purchase management considering the weather and the season is essential), a hotel management management program (for a hotel front desk) Business). Since the communication path between the business program using terminals is not set, the secret information of the terminal does not leak to other terminals as long as the specialized program keeps the secret of the using terminal.

In summary, the public server sets a communication path with each terminal in response to a request from a plurality of terminals -j (where j = 1, 2,..., N). The public server is, for example, an ASP server or a WWW server. In the case of the ASP server, a communication path is set between the ASP server and the terminal -j (j = 1, 2,..., N), and an ASP service using the communication path is performed. As an ASP service, at least execution of a specialized program and data storage work are possible. In the case of the WWW server, a communication path is set between the WWW server and the terminal -j (j = 1, 2,..., N), and an information providing service using the WWW server using the communication path is implemented. I do.
<< Summary >>
The technology of the above embodiment is summarized as follows. Here, the terminal 327 (FIG. 114) of this embodiment is represented by a terminal “m”, and the terminal 328 is represented by a terminal “n”. The user terminal “m” is connected to the IP network via the communication line, the internal terminal “IA-m” is assigned to the logical terminal at the end of the communication line, and the terminal of the user “m” is a terminal position identifier. “URL-m” is assigned, and the external address “EA-m” is used. The registration of the terminal information in the IP network means information on the user's terminal "m", that is, a set of a terminal location identifier "URL-m", an external address "EA-m", and an internal address "IA-m". This is to keep it inside the domain name server inside the network. A communication path on which an IP packet is transferred between the terminal “m” and the terminal “n” is called a communication path (or path) connecting the terminal “m” and the terminal “n”. Communication records “IA-m, IA-n, EA-m, EA-n, MK, MK” are set in the network node device on the terminal “m” side, and the communication records are set in the network node device on the terminal “n” side. By setting the communication records “IA-n, IA-m, EA-n, EA-m, MK, MK”, a communication path connecting the terminal “m” and the terminal “n” is set. When the user terminals “m” to “n” send out a path setting request packet including “URL-m” and “URL-n”, the path setting rejection table inside the IP network is checked and the communication path is set. Is permitted, a communication path connecting the terminal “m” and the terminal “n” is set. However, if the setting of the communication path is not permitted in the path setting rejection table, the communication path is not set.

  The terminal “m” and the terminal “n” can send and receive IP packets including digital data via the communication path connecting the set terminal “m” and the terminal “n”. The digital data can be text data, audio data, image data (moving image or still image), or the like. By transmitting a path release request packet including “URL-m” and “URL-n” from one of the terminals, a communication path connecting the terminal “m” and the terminal “n” is released. That is, the communication record inside the network node device on the terminal “m” side is deleted, and the communication record inside the network node device on the terminal “n” side is deleted. Any of the terminals “m” to “n” can transmit a path setting rejection request packet including the terminal location identifier “URL-x” of the communication partner whose path setting is to be rejected, and the path setting rejection request packet The internal terminal location identifier “URL-x” is written in a path setting rejection table inside the IP network. The above can be expressed more simply as follows.

  A communication path setting between any two terminals connected to the IP network is permitted and the communication path setting can be rejected. For this reason, the terminal address related information is registered in the server in the IP network, and the setting permission of the communication path between the two terminals is achieved by determining using the registration information in the server. The terminal location identifier of the terminal, the external address, and the internal address for connecting the terminal to the IP network are registered in a domain name server in the IP network, and upon request from one terminal, the terminal 1 and the terminal 1 are registered in the domain name server. The terminal position identifier of the terminal 2 is presented, the address information (external address and internal address) related to the terminal 1 and the terminal 2 is acquired, and the communication record 1 is set in the network node device 1 on the terminal 1 side. A communication record 2 is set in the network node device 2 on the side, and IP packets can be transmitted and received between the terminal 1 and the terminal 2. Further, in response to a request from the terminal 1 or the terminal 2, the set communication record 1 and communication record 2 are deleted. Further, by registering the terminal location identifier "URL" of the terminal whose communication path setting is to be rejected in the path setting rejection table in response to a request from the terminal 1 or the terminal 2, the setting of the communication record 1 and the communication record 2 can be rejected. It has become.

  In addition, by registering a range of domain names for which communication path setting is permitted in the path setting permission table in response to a request from the terminal 1 or the terminal 2, the setting of the communication record 1 and the communication record 2 can be permitted. it can.

Data transfer can be performed between two terminals by using the set communication path. The terminal is an audio / video transmission device (video image transmitter / receiver, facsimile terminal) which can digitize and transmit voice / image data, a digital telephone, a TV transmitter, and a TV receiver. The IP network can be used, for example, as a content delivery network (CDN). Since the individual URLs and IP addresses of the terminals are registered in the IP network, the identities of the two terminals that set the communication path are clear, and the communication paths from terminals that are not registered in the IP network are not set. High security communication can be secured. In this embodiment, both the external packet and the internal packet can be IPV4 or IPV6. The internal packet can be implemented by a frame having less than three layers of communication, for example, a MAC frame including a destination address and a source address. Can be implemented as an MPLS frame or optical frame including a destination address but not including a source address.

4. Fourth Embodiment Registering Terminal Address in IP Network FIG. 133 shows an IP network 2000, wherein 2001 to 2005 are sub-IP networks inside the IP network 2000, which are directly or indirectly connected by a communication line. ing. Reference numerals 2007 to 2009 denote communication line connection units included in the sub IP network 2001, and reference numeral 2010 denotes a communication line connection unit included in the sub IP network 2002. Reference numeral 2011 denotes an address inspection module inside the communication line connection unit 2007, and reference numeral 2012 denotes a router. Note that 2012 may be a switch having an IP packet transfer function. The communication line connecting units 2007 to 1010 have a function of connecting the IP network and the LAN similarly to the network node device 2 (FIG. 135), but, unlike the network node device 2, add an IP header to an external IP packet and It does not include the IP encapsulation function that forms internal IP packets.

  LANs 2015 to 2019 are connected to any of the sub-IP networks inside the IP network 2000 via communication lines. Each of the LANs 2015 to 2019 includes a terminal having an IP packet transmission / reception function. The terminal 2020 is assigned an IP address “A1”, the terminal 2021 is assigned an IP address “A2”, and the terminal 2022 is assigned an IP address “P”. The terminal 2024 is a terminal to which a fixed IP address value has not been assigned, and can transmit an IP packet including a suitably generated numerical value “x” as a source IP address. The terminal 2025 has been assigned the IP address “B”. The address check module 2011 includes IP addresses “A1” and “A2” of the terminals 2020 and 2021 in the LAN 2015 connected via the communication line 2027 from the communication line connection unit 2007, and terminals connected via the communication line 2028. The IP address “B” of the address 2025 is held therein. It is also said that IP addresses “A1”, “A2”, and “B” are registered in the address check module 2011 in the communication line connection unit 2001 instead of the “hold”. The address inspection module 2011 can be implemented as an apparatus or a server.

  The address check module 2011 has a function of checking a source IP address in an IP packet input from the communication lines 2027 and 2028, and discarding an IP packet that fails the check. Reference numeral 2013 denotes an MIB (message information base) included in the communication line connection unit 2007, which records, for example, discard information of an IP packet. When an IP packet 2030 having a source IP address “A1” and a destination IP address “C” is transmitted from the terminal 2020 and input to the address inspection module 2011 via the communication line 2027, the address inspection module 2011 It is checked whether the source IP address “A1” 2030 is included in the address check module 2011. In this case, since the source IP address “A1” is included in the address inspection module 2011, the IP packet 2030 is sent to the router 2012. The router 2012 sends out the IP packet 2030 to the communication line 2034. The IP packet 2030 is transferred in the IP network 2000 and reaches the terminal in the LAN 2016 having the IP address “C” via the communication line connection unit 2002.

  When an IP packet 2031 having a source IP address “x” and a destination IP address “C” is transmitted from the terminal 2024 and input to the address inspection module 2011 via the communication line 2027, the address inspection module 2011 It is checked whether the source IP address “x” of 2031 is included in the address check module 2011. In this case, since the source IP address “x” is not included in the address inspection module 2011, the IP packet 2031 is discarded. Also when an IP packet 2032 whose source IP address is “P” and destination IP address is “C” is transmitted from the terminal 2022, the source IP address “P” is not included in the address inspection module 2011 as described above. , The IP packet 2032 is discarded. The address inspection module 2011 can hold information on the discarded IP packets 2031 and 2032, for example, discard time, a header value (including an IP address value) in the IP packet, in the MIB 2013 (optional). Note that the IP packet discard information in the MIB 2013 can be used as information for operating and managing the sub IP network 2001.

  When an IP packet 2033 whose source IP address is “B” and whose destination IP address is “A2” is transmitted from the terminal 2025, the IP packet 2033 is input to the address inspection module 2011 via the communication line 2028. Since the source IP address “B” of the IP packet 2033 is included in the address check module 2011, the IP packet is sent to the router 2012, and the router 2012 sends this IP packet to the communication line 2036. The transmitted IP packet returns to the router 2012 and reaches the terminal 2021 having the IP address “A2” via the communication line connection unit 2007.

Another method of address checking will be described. For example, when the IP address value of the terminal 2020 is “172.1.2.18” and the IP address value of the terminal 2021 is “172.1.2.19”, the value of the mask M is “255.255.255.254”, and the network address N is “ 172.1.2.18 ", and if the source IP address of the IP packet input from the LAN 2015 to the communication line connection unit 2007 via the communication line 2027 is represented by S, it is checked whether the following expression (2) is satisfied.

N = (S AND M) ... (2)

Then, when the expression (2) is satisfied, it can be considered that the IP address of the terminal in the LAN 2015 is held in the address check module. Here, "AND" in the expression (2) represents a logical product operation corresponding to one bit.

The router 2012 can be replaced with an MPLS edge router, which will be described with reference to FIG. An MPLS edge router 2100 and an MPLS control table 2101 include a plurality of records (rows). Reference numerals 2102 and 2103 denote communication lines for transferring IP packets, and 2104 and 2105 denote communication lines for transferring MPLS frames. When an IP packet 2106 whose source IP address is “X” and whose destination IP address is “Y” is input from the communication line 2102 identified by the line identifier “IN # 1” to the MPLS edge router 2100, the MPLS control table For the record including the line identifier “IN # 1” of 2101, it is checked whether or not the relationship of the following expression (2) is established.

N # 1 =
(X AND M # 1)… (3)

In this case, the record “IN # 1, M # 1, N # 1, V # 1, L # 1, OUT # 1” in the first row of the MPLS control table 2101 is the target, and the above equation (3) is used. Holds, an MPLS frame 2108 is formed using a VPN identifier “V # 1” for identifying a VPN (virtual private network) and an MPLS label “L # 1” set in the header of the MPLS frame. The formed MPLS frame 2108 is sent to the communication line 2104 identified by the line identifier “OUT # 1”. The same applies to a case where an IP packet 2107 whose source IP address is “X” and whose destination IP address is “Z” is input to the MPLS edge router 2100 from the communication line 2102 identified by the line identifier “IN # 1”. An MPLS frame 2109 is formed by using the record in the second row of the MPLS control table 2101 and transmitted to the communication line 2105 identified by the line identifier “OUT # 2”. Note that the form of the MPLS control table 2101 can be changed. For example, without using M # 1 and N # 1, the record in the first row is set to “IN # 1, V # 1, L # 1, OUT”. It is also possible to change it to # 1 ”. In this case, the calculation of the above equation (3) is not performed, and an MPLS frame 2108 is formed and transmitted to the communication line 2104.

  An apparatus in which the address inspection module 2011 and the router 2012 or the MPLS edge router 2100 are integrated, or an apparatus in which the address inspection module 2011 is incorporated in the router 2012 or the MPLS edge router 2100 may be implemented as the address inspection function router. The address check function router checks whether or not the source IP address of the input IP packet is held therein, and if not, discards the IP packet.

  As described above, it is possible to prevent a situation where unnecessary IP packets overflow into the IP network 2000 and interfere with normal communication, and smooth communication between terminals in which an IP address is registered can be performed. In addition, it is possible to prevent an IP packet whose source IP address is not registered in the IP network or an IP packet whose source IP address is concealed from flowing into the IP network. A DOS attack in which a garbage IP packet is sent to a user can be reduced.

The sub IP networks 2001 to 2005 can be, for example, IP networks individually managed by a communication company, and the IP network 2000 can be an IP network composed of a set of sub IP networks 2001 to 2005. Further, for example, the sub IP networks 2001 to 2005 may be an IP network managed by an Internet ISP (Internet Service Provider), and the IP network 2000 may be the Internet.
(Summary)
The terminal is connected to a communication line connection unit of the IP network via a communication line, and the IP address of the terminal is registered in the communication line connection unit of the IP network, and the communication line connection unit receives an IP packet and performs the communication. When the line connection unit detects an IP packet including an unregistered IP address as a source address, the IP packet is discarded, thereby preventing unnecessary IP packets from being input to the IP network and the sub IP network. According to the above procedure, it is possible to prevent a situation where unnecessary IP packets overflow into the IP network and interfere with normal communication, and smooth communication between terminals in which IP addresses are registered can be performed.

  The present invention enables a terminal connected to an IP network and a wireless LAN to connect to the IP network and communicate with other terminals, and a mobile telephone or a voice / image device connected to the IP network moves its geographical position. While continuing via the IP network, a communication path is set between any terminals whose address information is registered based on the user's request to prevent a large amount of illegal IP packets from flowing into the IP network. This is extremely effective for connection control of communication between terminals using an IP network.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram illustrating a technology for performing fixed telephone communication, mobile telephone communication, and multimedia communication over an IP network as a premise of the present invention. FIG. 2 is a diagram for explaining a method of performing communication from a fixed telephone to a fixed telephone in a communication case 1 of an IP network which is a premise of the present invention. FIG. 3 is a diagram for explaining a registration procedure of a fixed telephone in a communication case 1 of an IP network which is a premise of the present invention. FIG. 3 is a diagram for explaining information exchange between telephone number servers in a communication case 1 of an IP network which is a premise of the present invention. FIG. 7 is a part of a diagram illustrating a method for performing communication from a mobile telephone to a mobile telephone in a communication case 2 of an IP network which is a premise of the present invention. FIG. 7 is a part of a diagram illustrating a method for performing communication from a mobile telephone to a mobile telephone in a communication case 2 of an IP network which is a premise of the present invention. FIG. 3 is a diagram for explaining a registration procedure of a mobile phone in a communication case 2 of an IP network which is a premise of the present invention. FIG. 11 is a diagram for explaining another location change procedure of the mobile phone in the communication case 2 of the IP network which is a premise of the present invention. FIG. 7 is a diagram for explaining a method of performing communication from a mobile telephone to a fixed telephone in an IP network in a communication case 3 of the IP network which is a premise of the present invention. FIG. 168 is a drawing citing FIG. 168 of Patent Document 2 as a premise of the present invention, and is a diagram showing a relationship between a mobile telephone and a radio base station in communication cases 2 to 4. FIG. 17 is a diagram citing FIG. 171 of Patent Document 2 as a premise of the present invention, and is a diagram illustrating a state where an IP packet including control or voice transmitted from an IP mobile telephone is transferred via a wireless base station. . FIG. 9 is a diagram showing another communication connection procedure from an IP terminal to another IP terminal in a communication case 6 of an IP network which is a premise of the present invention. FIG. 13 is a diagram citing FIG. 12 of Patent Document 2 as a premise of the present invention, and is a diagram illustrating communication between terminals via a mobile telephone network and an IP network. FIG. 14 is a diagram citing FIG. 13 of Patent Document 2 as a premise of the present invention, and is a diagram illustrating connection control between terminals based on a common channel signaling method via a mobile telephone network and an IP network. FIG. 2 is a diagram for explaining communication connecting a wireless LAN and an IP network in the first embodiment of the present invention. FIG. 5 is a diagram illustrating an example of a terminal registration table in the first embodiment of the present invention. FIG. 3 is a diagram for explaining a MAC frame in a wireless LAN in the first embodiment of the present invention. FIG. 2 is a diagram for explaining communication in a wireless LAN in the first embodiment of the present invention. FIG. 5 is a diagram for explaining another communication in the wireless LAN in the first embodiment of the present invention. FIG. 3 is a diagram for explaining access to a telephone number server with authentication in a wireless LAN in the first embodiment of the present invention. FIG. 4 is a diagram for explaining communication between terminals transmitted from the wireless LAN side in the present invention. FIG. 4 is a diagram for explaining terminal-to-terminal communication on the wireless LAN side in the first embodiment of the present invention. FIG. 2 is a diagram for explaining communication via a wireless LAN, an IP network, and a wireless LAN in the first embodiment of the present invention. FIG. 2 is a diagram for explaining transmission / reception of IP packets via a wireless LAN, an IP network, and a wireless LAN in the first embodiment of the present invention. FIG. 2 is a diagram for explaining a method of connecting a wireless LAN terminal to a mobile station of a mobile network in the first embodiment of the present invention. FIG. 2 is a diagram for explaining communication between terminals via a wireless LAN, an IP network, a public switched telephone network, and a mobile communication network in the first embodiment of the present invention. FIG. 4 is a diagram for explaining a terminal connection connection control method in which a connection request is made from a terminal in a wireless LAN and connected between other terminals via an IP network and a public switched telephone network in the first embodiment of the present invention. is there. In the first embodiment of the present invention, a diagram for explaining an inter-terminal communication connection control method for making a connection request from a terminal connected to a public switched telephone network and communicating with a terminal in a wireless LAN via an IP network. It is. FIG. 3 is a diagram for explaining a terminal connection control method for connecting between other terminals via an IP network and a mobile communication network in response to a connection request from a terminal in a wireless LAN in the first embodiment of the present invention. . FIG. 4 is a diagram for explaining a terminal connection connection control method for performing a connection request from a terminal connected to a mobile communication network and communicating with a terminal in a wireless LAN via an IP network in the first embodiment of the present invention. is there. FIG. 9 is a diagram illustrating a relationship between a wireless communication area of a mobile phone and an IP network in a second embodiment of the present invention. FIG. 13 is a part of a diagram illustrating a communication procedure of a handover in which a terminating gateway is switched in a second embodiment of the present invention. FIG. 13 is a part of a diagram illustrating a communication procedure of a handover in which a terminating gateway is switched in a second embodiment of the present invention. FIG. 13 is a part of a diagram illustrating a communication procedure of a handover in which a terminating gateway is switched in a second embodiment of the present invention. FIG. 13 is a part of a diagram illustrating a communication procedure of a handover in which a terminating gateway is switched in a second embodiment of the present invention. FIG. 11 is a diagram illustrating an example of a mobile phone registration table in the second embodiment of the present invention. FIG. 13 is a diagram illustrating an example of a terminating gateway address management table in the second embodiment of the present invention. It is a figure in the 2nd Example of this invention which shows an example of a telephone management server address table. FIG. 13 is a diagram illustrating an example of a wireless base station address management table in the second embodiment of the present invention. FIG. 11 is a diagram illustrating an example of an external packet transmitted from a wireless base station for a telephone connection request in the second embodiment of the present invention. FIG. 13 is a diagram showing an example of an internal packet transmitted from a proxy mobile telephone server transmitted from a network node device for a telephone connection request in the second embodiment of the present invention. FIG. 11 is a diagram illustrating an example of an internal packet transmitted from a proxy mobile telephone server for a telephone connection request in the second embodiment of the present invention. FIG. 11 is a diagram showing an example of an internal packet sent to a mobile telephone dedicated telephone number server in a second embodiment of the present invention. FIG. 11 is a diagram illustrating an example of an internal packet returned from a mobile phone dedicated telephone number server in a second embodiment of the present invention. FIG. 14 is a diagram illustrating an example of an internal packet including an initial address message in the second embodiment of the present invention. FIG. 11 is a diagram illustrating an example of an internal packet transmitted to a called-side proxy mobile telephone server in a second embodiment of the present invention. FIG. 13 is a diagram illustrating an example of an internal packet transmitted to a called-side network node device in the second embodiment of the present invention. FIG. 14 is a diagram illustrating an example of an external packet transmitted to a called wireless base station in the second embodiment of the present invention. FIG. 13 is a diagram illustrating an example of an ACM packet in the second embodiment of the present invention. FIG. 13 is a diagram illustrating an example of a CPG packet in a second embodiment of the present invention. FIG. 13 is a diagram illustrating an example of an ANM packet in the second embodiment of the present invention. FIG. 13 is a diagram illustrating a first example of a device control table in the second embodiment of the present invention. FIG. 13 is a diagram illustrating a second example of the device control table in the second embodiment of the present invention. FIG. 13 is a diagram illustrating a third example of the device control table in the second embodiment of the present invention. FIG. 14 is a part of a diagram illustrating a CIC management table handled by a telephone management server 908-4 in a second embodiment of the present invention. FIG. 14 is a part of a diagram illustrating a CIC management table handled by a telephone management server 908-4 in a second embodiment of the present invention. FIG. 14 is a part of a diagram illustrating a CIC management table handled by a telephone management server 908-4 in a second embodiment of the present invention. FIG. 14 is a part of a diagram illustrating a CIC management table handled by a telephone management server 908-4 in a second embodiment of the present invention. FIG. 14 is a part of a diagram illustrating a CIC management table handled by a telephone management server 909-4 in the second embodiment of the present invention. FIG. 14 is a part of a diagram illustrating a CIC management table handled by a telephone management server 909-4 in the second embodiment of the present invention. FIG. 14 is a part of a diagram illustrating a CIC management table handled by a telephone management server 909-4 in the second embodiment of the present invention. FIG. 14 is a part of a diagram illustrating a CIC management table handled by the telephone management server 906-4 in the second embodiment of the present invention. FIG. 14 is a part of a diagram illustrating a CIC management table handled by the telephone management server 906-4 in the second embodiment of the present invention. FIG. 14 is a part of a diagram illustrating a CIC management table handled by the telephone management server 906-4 in the second embodiment of the present invention. FIG. 13 is a diagram illustrating an external packet including a handover request transmitted from a wireless base station in the second embodiment of the present invention. FIG. 11 is a diagram showing an internal packet including a handover request encapsulated in a network node device in a second embodiment of the present invention. FIG. 13 is a diagram illustrating an internal packet including a handover request sent from a proxy telephone server in a second embodiment of the present invention. FIG. 14 is a diagram showing an internal packet for notifying a handover request in the second embodiment of the present invention. FIG. 11 is a diagram illustrating an internal packet including a wireless channel request in the second embodiment of the present invention. FIG. 11 is a diagram illustrating an external packet transferred to a wireless base station including a wireless channel request in the second embodiment of the present invention. FIG. 13 is a diagram illustrating an external packet including a wireless channel reply returned from the wireless base station in the second embodiment of the present invention. FIG. 11 is a diagram showing an internal packet including a wireless line answer transferred to a proxy telephone server in a second embodiment of the present invention. FIG. 14 is a diagram showing an internal packet including a wireless line answer transferred to a telephone management server in the second embodiment of the present invention. FIG. 14 is a diagram illustrating an internal packet including a communication record writing instruction on the transmitting side to the table management server in the second embodiment of the present invention. FIG. 13 is a diagram showing an internal packet for notifying another telephone management server of communication record writing information in the second embodiment of the present invention. FIG. 13 is a diagram showing an internal packet including a communication record writing instruction on the receiving side to the table management server in the second embodiment of the present invention. FIG. 13 is a diagram showing an internal packet for notifying the start of a handover procedure from the telephone management server 1 to the telephone management server 3 in the second embodiment of the present invention. FIG. 13 is a diagram illustrating an external packet instructing a radio base station to start a handover procedure in a second embodiment of the present invention. FIG. 13 is a diagram showing an external packet for reporting the start of a handover procedure from a radio base station in the second embodiment of the present invention. FIG. 13 is a diagram showing an internal packet for reporting the start of a handover procedure from the telephone management server 3 to the telephone management server 1 in the second embodiment of the present invention. FIG. 13 is a diagram showing an internal packet for notifying the start of a handover procedure from the telephone management server 1 to the wireless base station 1 in the second embodiment of the present invention. FIG. 14 is a diagram illustrating another external packet instructing another radio base station to start a handover procedure in the second embodiment of the present invention. FIG. 13 is a diagram showing another external packet reporting the start of a handover procedure from another radio base station in the second embodiment of the present invention. FIG. 9 is a diagram showing an internal packet for reporting the start of a handover procedure from the wireless base station 1 to the telephone management server 1 in the second embodiment of the present invention. FIG. 13 is a diagram showing an internal packet for notifying the start of a handover procedure from the telephone management server 1 to the telephone management server 4 in the second embodiment of the present invention. FIG. 13 is a diagram showing an internal packet requesting the release of a capsule control record and the release of a wireless line from the telephone management server 1 to the telephone management server 3 in the second embodiment of the present invention. FIG. 14 is a diagram showing an internal packet requesting the release of a capsule control record from the telephone management server 1 to the telephone management server 4 in the second embodiment of the present invention. FIG. 8 is a diagram showing an internal packet requesting the telephone management server 1 to update a mobile telephone registration table after a handover from the telephone management server 1 to a telephone number server dedicated to the mobile telephone in the second embodiment of the present invention. FIG. 11 is a diagram showing a mobile phone registration table after a handover in the second embodiment of the present invention. FIG. 14 is a diagram illustrating a REL packet designating release of a telephone communication path after a handover in the second embodiment of the present invention. FIG. 13 is a diagram illustrating an RLC packet for confirming release of a telephone communication path after a handover in the second embodiment of the present invention. FIG. 14 is a part of a diagram illustrating a communication procedure of a handover in which only the wireless base station switches in the second embodiment of the present invention. FIG. 14 is a part of a diagram illustrating a communication procedure of a handover in which only the wireless base station switches in the second embodiment of the present invention. FIG. 14 is a part of a diagram illustrating a communication procedure of a handover in which only the wireless base station switches in the second embodiment of the present invention. FIG. 14 is a part of a diagram illustrating a communication procedure of a handover in which only the wireless base station switches in the second embodiment of the present invention. FIG. 9 is a diagram for explaining a procedure of registering a telephone number of a mobile telephone and registering an initial location of the mobile telephone in the second embodiment of the present invention. FIG. 13 is a diagram for explaining a procedure for registering a new location of a mobile phone in the second embodiment of the present invention. FIG. 9 is a diagram showing an external packet requesting initial location registration of a mobile phone transmitted from a radio base station in the second embodiment of the present invention. FIG. 11 is a diagram illustrating an internal packet requesting initial location registration encapsulated in a network node device in a second embodiment of the present invention. FIG. 11 is a diagram showing an internal packet for requesting initial location registration sent from a proxy telephone server in a second embodiment of the present invention. FIG. 14 is a diagram showing an internal packet including a request for initial location registration sent to a telephone number server dedicated to a mobile telephone in the second embodiment of the present invention. FIG. 13 is a diagram showing an external packet requesting updating of a registered position of a mobile phone transmitted from a wireless base station in the second embodiment of the present invention. FIG. 13 is a diagram illustrating an internal packet including a registration position update request of a mobile phone in the second embodiment of the present invention. FIG. 11 is a diagram showing an integrated IP network in which a plurality of IP networks are connected and each IP network includes a telephone number server dedicated to a mobile telephone in the second embodiment of the present invention. FIG. 10 is a diagram showing a relationship between a telephone number server dedicated to a mobile telephone and a root telephone number server in the second embodiment of the present invention. FIG. 7 is a diagram for explaining communication between a telephone number server dedicated to a mobile telephone and a root telephone number server in the second embodiment of the present invention. FIG. 8 is a diagram showing a procedure for connecting a telephone call from a fixed telephone to a mobile telephone in the second embodiment of the present invention. FIG. 7 is a part of a diagram illustrating a communication procedure of a handover when a telephone call is connected from a mobile telephone to a fixed telephone in the second embodiment of the present invention. FIG. 7 is a part of a diagram illustrating a communication procedure of a handover when a telephone call is connected from a mobile telephone to a fixed telephone in the second embodiment of the present invention. FIG. 7 is a part of a diagram illustrating a communication procedure of a handover when a telephone call is connected from a mobile telephone to a fixed telephone in the second embodiment of the present invention. FIG. 7 is a part of a diagram illustrating a communication procedure of a handover when a telephone call is connected from a mobile telephone to a fixed telephone in the second embodiment of the present invention. FIG. 13 is a diagram for explaining an example in which the mobile telephone performs a handover when the mobile telephone communicates with the IP terminal in the second embodiment of the present invention. FIG. 13 is a diagram for explaining another example in which the mobile phone performs handover when the mobile phone and the IP terminal communicate with each other in the second embodiment of the present invention. FIG. 13 is a diagram illustrating an internal configuration of an IP network and a connection state of a LAN outside the IP network in a third embodiment of the present invention. FIG. 13 is a diagram showing a procedure for registering terminal information in an IP network in a third embodiment of the present invention. FIG. 14 is a diagram illustrating a communication path setting and release procedure between terminals in the third embodiment of the present invention. FIG. 14 is a diagram illustrating a path setting request packet in a third embodiment of the present invention. FIG. 13 is a diagram in which a path setting request packet is converted into an internal packet in a third embodiment of the present invention. FIG. 16 is a diagram illustrating another internal packet format of the path setting request packet in the third embodiment of the present invention. FIG. 14 is a diagram illustrating a packet for asking a DNS for an address of a terminal in a third embodiment of the present invention. FIG. 13 is a diagram showing a packet for obtaining a terminal address response from DNS in the third embodiment of the present invention. FIG. 13 is a diagram illustrating a first form of an internal packet transferred from a path management server to another path management server in a third example of the present invention. FIG. 14 is a diagram illustrating an example of a path setting rejection table in the third embodiment of the present invention. FIG. 14 is a diagram illustrating a second form of the internal packet transferred from the path management server to another path management server in the third example of the present invention. FIG. 14 is a diagram illustrating a packet instructing a table management server to set a communication record from a path management server in a third embodiment of the present invention. FIG. 14 is a diagram illustrating an example of an external packet transmitted and received between terminals in the third embodiment of the present invention. FIG. 13 is a diagram in which an external packet transmitted and received between terminals is converted into an internal packet in a third embodiment of the present invention. FIG. 13 is a diagram illustrating a communication path release request packet in a third embodiment of the present invention. FIG. 13 is a diagram illustrating a third form of the internal packet transferred from the path management server to another path management server in the third example of the present invention. FIG. 14 is a diagram illustrating an example of a packet requesting rejection of a communication path setting in the third embodiment of the present invention. FIG. 13 is a diagram illustrating a structure example of a domain name in a third embodiment of the present invention. FIG. 14 is a diagram illustrating an example of a path setting procedure using a communication path setting permission table in the third embodiment of the present invention. FIG. 14 is a diagram illustrating a configuration example of a communication path setting permission table in a third embodiment of the present invention. FIG. 13 is a diagram illustrating a tree structure of a domain name server in a third embodiment of the present invention. FIG. 13 is a diagram illustrating a state where a plurality of IP networks are connected in a third embodiment of the present invention. It is a figure for explaining the variation which implements an internal packet by a frame of less than three layers of communication in a 3rd example of the present invention. FIG. 14 is a diagram showing a variation in which an internal packet and an external packet have the same format in a third embodiment of the present invention. FIG. 14 is a diagram illustrating a state in which one terminal sets a communication path with a plurality of terminals and then distributes contents in the third embodiment of the present invention. FIG. 13 is a diagram illustrating an example in which one terminal communicates with a plurality of terminals after setting a communication path in the third embodiment of the present invention. FIG. 13 is a diagram showing that a plurality of terminals can communicate with a public server by setting communication paths in the third embodiment of the present invention. FIG. 13 is a diagram illustrating an example in which a plurality of terminals communicate with a public server after setting communication paths in the third embodiment of the present invention. FIG. 14 is a diagram for explaining a state of registration of an IP address and a function of an address check module in a fourth embodiment of the present invention. FIG. 14 is a diagram for explaining an operation of an MPLS edge router used in combination with an address inspection module in a fourth embodiment of the present invention. FIG. 3 is a diagram illustrating an example of transferring an IP packet using a conventional encapsulation technique. FIG. 10 is a diagram illustrating an example of a conventional device control table. FIG. 10 is a diagram illustrating an example of a conventional device control table.

Explanation of reference numerals

1 IP network 2, 3 network node device 5-8 LAN
10, 11 Terminal 12, 14 External communication line 13 Internal communication line 15, 16 Device control table 17, 19 External packet 18 Internal packet 152 Terminal 153 Media router 145 IP network 146 Mobile communication network 159 Radio base station 160 Terminal 202 to 205 Radio Communication area 210, 210X Mobile telephone registration table 211, 211Z Terminal gateway address management table 211X Server address table 212, 212X Wireless base station address management table 249 Mobile telephone registration table 300, 300-5, 300-6 IP network 300X, 300Y Communication Network 301-303 Terminating gateway 304-307 LAN
308, 309 Network node device 310, 311 Termination control unit 312, 313 Path setting server 314, 315 Table management server 316, 317 Path management server 318, 319 Domain name server 322 User service server 323 Open connection server 324 Resource management server 325 Domain Name server 346 path setting rejection table 354-1 root domain 354-10 path setting permission table 359 gateway 400 content delivery server 410 public server 500, 500-1 to 500-3 wireless terminal 510 in wireless LAN mobile communication network 511, 512 Switch 600 IP network 601 Mobile communication network 602 Public switched telephone network 603 Terminating gateway 604, 605 Relay gateway 606, 608 Relay switch 607, 609 Switch,
610 Wireless base station 612, 613 Terminal 900, 900X IP network 900-10 to 900-12 IP network 902-1 to 902-5 Wireless base station 910-1 to 910-4 Device control table 906-4A to 906-4B CIC Management tables 908-4A to 908-4D CIC management tables 909-4A to 909-4C CIC management tables 966 Phone number servers 901-1 to 901-4 Termination gateways 914-1 to 914-4 Termination control units 910-1 to 910 -4 device control tables 906-1 to 909-1 network node devices 906-2 to 909-2 proxy telephone servers 906-3 to 909-3 table management servers 906-4 to 909-4 telephone management servers 906-5 to 909 -5 telephone number server (or lower-level telephone number server)
906-6 to 909-6 Proxy mobile phone server 916-1 to 916-4 Router 995 Upper-level telephone number server 990-1 to 990-2 Users 991-1 to 991-2 Recipients 992-1 to 992-2 Users Service server 1040 IP networks 1041 to 1044 network node device 1200 range of wireless LAN 1201 to 1203 wireless unit 1204 to 1206 wireless transmitting and receiving unit 1207 to 1209 IP processing unit
1210 to 1212 wireless communication paths,
1214 to 1216 communication line,
1217-1218 router,
1219 Media router 1220-1223 Terminal 1224 Phone number server with authentication 1241,1242 IP packet 1232,1242 MAC frame 1260 Terminal registration table 2000 IP network 2001-2005 Sub IP network 2007-2009 Communication line connection unit 2011 Address inspection module 2100 MPLS edge Router 2101 MPLS control table

Claims (38)

An IP network includes two or more network node devices. An external IP packet is converted into an internal packet in an ingress network node device and transferred inside the IP network, and the external IP packet is converted from the internal packet in the egress network node device. The wireless LAN is connected to one network node device of the IP network via a media router 1 and a communication line inside the wireless LAN, and the wireless LAN includes at least a terminal 1, The terminal 2 is connected to one network node device of the IP network via the media router 2, the terminal registration table is set inside the media router 1, and the terminal 1 is connected to the terminal 2 When the terminal 2 performs the communication connection control including a procedure of obtaining a transmission permission based on the management of the terminal registration table, When connecting to the terminal 1, the terminal 1 can also perform communication connection control including a procedure for obtaining an incoming call permission based on the management of the terminal registration table, and perform the communication connection control based on the management of the terminal registration table. 1 and the terminal 2 communicate with each other via the wireless LAN and the IP network. The terminal registration table is not included in the media router 1, but is included in the authenticated telephone number server in the wireless LAN. The media router 1 calls the authenticated telephone number server and uses the terminal registration table. 2. The method for controlling communication connection between terminals using an IP network according to claim 1. 2. The method according to claim 1, wherein the wireless MAC frame transmitted and received in the wireless LAN includes an internal packet formed by encapsulating an external IP packet by IP. The terminal 1 obtains an external IP address for accessing the IP network by inquiring of a telephone number server with authentication in the wireless LAN 1, and then performs communication connection control for calling the terminal 2 from the terminal 1. 2. The method for controlling communication connection between terminals using an IP network according to claim 1. The IP network includes two or more network node devices. An external packet transmitted from the media router 1 or the wireless base station 1 becomes an internal packet in the originating network node device, and the internal packet is transferred inside the communication network. The internal packet is restored to an external packet in the network node device on the receiving side and sent to the media router 2 or the wireless base station 2, and the terminal 1, the media router 1 or the wireless base station 1, the telephone management server 1, the telephone management server 2, Connection control for communication between terminals is performed via the media router 2 or the wireless base station 2 and the terminal 2, and the communication procedure between the media router or the wireless base station and the telephone management server is performed for the media router or the wireless base station. The communication procedure between the telephone management server and another telephone management server is a UNI, which is an NNI based on a common channel signaling system. Using an IP network adapted to perform the control method, the wireless LAN is connected to one network node device of the IP network via a media router 1 and a communication line inside the wireless LAN, and the wireless LAN has at least The terminal 3 includes a terminal 3, and the terminal 4 is connected to one network node device of the IP network via the media router 2. A terminal registration table is set inside the media router 1. When connecting to the terminal 4, the terminal 1 performs communication connection control including a procedure for obtaining a call permission based on the management of the terminal registration table, and connects from the terminal 4 to the terminal 3. At this time, it is also possible for the terminal 1 to perform communication connection control including a procedure for obtaining an incoming call permission based on the management of the terminal registration table, and perform communication between the terminals 3 and 4 based on the management of the terminal registration table. Before Terminal communication connection control method using an IP network, characterized in that communicate via a wireless LAN and the IP network. An IP network includes two or more network node devices. An external IP packet is converted into an internal packet in an ingress network node device and transferred inside the IP network, and the external IP packet is converted from the internal packet in the egress network node device. The wireless LAN 1 includes at least a terminal 1, the wireless LAN 2 includes at least a terminal 2, and the wireless LAN 1 is connected to a media router 1 in the wireless LAN 1 and one of the IP networks via a communication line. The wireless LAN 2 is connected to one network node device of the IP network via a media router 2 in the wireless LAN 2 and a communication line, and the terminal registration table 1 The terminal registration table 2 is set inside the media router 1, and the terminal 1 is connected to the terminal 2. At this time, the terminal 1 performs communication connection control including a procedure for obtaining a transmission permission based on the management of the terminal registration table 1, and the terminal 2 performs the communication connection control requested by the terminal 1. When performing the communication, it is also possible to perform communication connection control including a procedure for obtaining an incoming call permission of the terminal 2 based on the management of the terminal registration table 2. At least the terminal 1 is controlled based on the management of the terminal registration table 1. And a communication between the terminal 2 and the terminal 2 via the wireless LAN 1, the IP network, and the wireless LAN 2. The IP network includes two or more network node devices. An external packet transmitted from the media router 1 or the wireless base station 1 becomes an internal packet in the originating network node device, and the internal packet is transferred inside the communication network. The internal packet is restored to an external packet in the network node device on the receiving side and sent to the media router 2 or the wireless base station 2, and the terminal 1, the media router 1 or the wireless base station 1, the telephone management server 1, the telephone management server 2, The communication procedure between the media router or the wireless base station and the telephone management server is a UNI for the media router or the wireless base station in order to perform communication connecting the media router 2 or the wireless base station 2 and the terminal 2 via a communication line. The communication procedure between the telephone management server and another telephone management server is a terminal-to-terminal communication connection control which is an NNI based on a common channel signaling system. The wireless LAN 1 includes at least a terminal 1, the wireless LAN 2 includes at least a terminal 2, and the wireless LAN 1 includes a media router 1 in the wireless LAN 1 and a communication line. The wireless LAN 2 is connected to one network node device of the IP network via the media router 2 and the communication line in the wireless LAN 2 and the terminal registration table. 1 is set inside the media router 1, the terminal registration table 2 is set inside the media router 1, and when connecting from the terminal 1 to the terminal 2, the terminal 1 Under the management of Table 1, communication connection control including a procedure for obtaining a transmission permission is performed, and the terminal 2 performs the communication connection control requested by the terminal 1. At this time, it is also possible to perform a communication connection control including a procedure for obtaining an incoming call permission of the terminal 2 based on the management of the terminal registration table 2. At least, based on the management of the terminal registration table 1, And a communication between the terminal 2 and the terminal 2 via the wireless LAN 1, the IP network, and the wireless LAN 2. An IP network includes two or more network node devices. An external IP packet is converted into an internal packet in an ingress network node device and transferred inside the IP network, and the external IP packet is converted from the internal packet in the egress network node device. The mobile phone for wireless LAN can be connected to the IP network via a wireless unit of the wireless LAN, and the mobile phone for wireless LAN connects to the IP network via a wireless base station. A terminal-to-terminal communication connection control method using an IP network, characterized in that: An IP network includes two or more network node devices. An external IP packet is converted into an internal packet in an ingress network node device and transferred inside the IP network, and the external IP packet is converted from the internal packet in the egress network node device. The mobile phone for wireless LAN can be connected to the IP network via the wireless part of the wireless LAN, and the mobile phone for wireless LAN is connected to the mobile communication network and connected to the mobile communication network. An inter-terminal communication connection control method using an IP network, capable of performing telephone communication with another telephone to be connected. An IP network includes two or more network node devices. An external IP packet is converted into an internal packet in an ingress network node device and transferred inside the IP network, and the external IP packet is converted from the internal packet in the egress network node device. The wireless LAN IP terminal can be connected to the IP network via the wireless unit of the wireless LAN, and the wireless LAN IP terminal can be connected to the IP network via the wireless base station. A terminal communication connection control method using an IP network, wherein IP communication for transmitting and receiving IP packets to and from another IP terminal connected to the IP network can be performed. An IP network includes two or more network node devices. An external IP packet is converted into an internal packet at an ingress network node device and transferred inside the IP network, and the external IP packet is converted from the internal packet at the egress network node device. The IP terminal for wireless LAN can be connected to an IP network via a wireless section of the wireless LAN, and the IP terminal for wireless LAN is connected to a mobile communication network and connected to the mobile communication network. An inter-terminal communication connection control method using an IP network, capable of performing IP communication for transmitting and receiving IP packets with another IP terminal to be connected. An IP network includes two or more network node devices. An external IP packet is converted into an internal packet in an ingress network node device and transferred inside the IP network, and the external IP packet is converted from the internal packet in the egress network node device. The communication between the wireless terminal and the terminal is performed through a communication path connecting the wireless terminal, the wireless LAN, the IP network, the public switched telephone network, and the terminal. An inter-terminal communication connection control method, wherein connection control is performed inside a telephone network based on a common channel signaling method. An IP network includes two or more network node devices. An external IP packet is converted into an internal packet in an ingress network node device and transferred inside the IP network, and the external IP packet is converted from the internal packet in the egress network node device. The IP network and the mobile communication network for performing communication between the wireless terminal and the terminal via a communication path connecting the wireless terminal, the wireless LAN, the IP network, the mobile communication network, and the terminal. A communication connection control method between terminals, wherein connection control is performed based on a common channel signal system inside. An IP network includes two or more network node devices. An external IP packet is converted into an internal packet in an ingress network node device and transferred inside the IP network, and the external IP packet is converted from the internal packet in the egress network node device. Including the function to be restored, the IP network includes two or more network node devices, and a terminal 1, a wireless base station 1 or a media router 1, a telephone management server 1, a telephone management server 2, a wireless base station 2, or a media router 2 In the inter-terminal communication connection control procedure via the terminal 2, the communication procedure between the telephone management server and another telephone management server is unified by a common channel signaling method applied to an IP network. The mobile telephone 1 which is the mobile telephone 2 or the fixed telephone 2 and which is within the range of the wireless communication area 1 of the wireless base station 1 is a mobile telephone 1-a wireless base station 1-a terminal gateway. 1—Terminal gateway 2—Wireless base station 2—While continuing telephone communication with mobile telephone 2 or fixed telephone 2 via mobile telephone 2 or fixed telephone 2, mobile telephone 1 is a wireless base station managed by terminal gateway 3. A terminal-to-terminal communication connection control method using an IP network, wherein the terminal moves to a geographical position communicating with the station 3 and continues telephone communication with the mobile telephone 2 or the fixed telephone 2. An IP network includes two or more network node devices. An external IP packet is converted into an internal packet in an ingress network node device and transferred inside the IP network, and the external IP packet is converted from the internal packet in the egress network node device. Including the function to be restored, the IP network includes two or more network node devices, and a terminal 1, a wireless base station 1 or a media router 1, a telephone management server 1, a telephone management server 2, a wireless base station 2, or a media router 2 In the inter-terminal communication connection control procedure via the terminal 2, the communication procedure between the telephone management server and another telephone management server is unified by a common channel signaling method applied to an IP network. The mobile telephone 1 which is the mobile telephone 2 or the fixed telephone 2 and which is within the range of the wireless communication area 1 of the wireless base station 1 is a mobile telephone 1-a wireless base station 1-a terminal gateway. 1—Terminal gateway 2—Wireless base station 2—The mobile telephone 1 communicates with the wireless base station 2 while continuing telephone communication with the mobile telephone 2 or the fixed telephone 2 via the mobile telephone 2 or the fixed telephone 2. A terminal-to-terminal communication connection control method using an IP network, wherein the terminal moves to a geographical position and continues telephone communication with the mobile telephone 2 or the fixed telephone 2. An IP network includes two or more network node devices. An external IP packet is converted into an internal packet at an ingress network node device and transferred inside the IP network, and the external IP packet is converted from the internal packet at the egress network node device. Including the function to be restored, the IP network includes two or more network node devices, and a terminal 1, a wireless base station 1 or a media router 1, a telephone management server 1, a telephone management server 2, a wireless base station 2, or a media router 2 In the inter-terminal communication connection control procedure via the terminal 2, the communication procedure between the telephone management server and another telephone management server is unified by a common channel signaling method applied to an IP network. A mobile phone 1 that is an IP terminal and is within the range of the wireless communication area 1 of the wireless base station 1 is: mobile phone 1-wireless base station 1-terminal gateway 1-terminal gateway 2 While continuing communication with the IP terminal via the wireless base station 2-IP terminal, the mobile telephone 1 moves to a geographical position where it communicates with the wireless base station 3 managed by the terminating gateway 3, and communicates with the IP terminal. A method for controlling communication connection between terminals using an IP network, characterized by continuing. An IP network includes two or more network node devices. An external IP packet is converted into an internal packet in an ingress network node device and transferred inside the IP network, and the external IP packet is converted from the internal packet in the egress network node device. Including the function to be restored, the IP network includes two or more network node devices, and a terminal 1, a wireless base station 1 or a media router 1, a telephone management server 1, a telephone management server 2, a wireless base station 2, or a media router 2 In the inter-terminal communication connection control procedure via the terminal 2, the communication procedure between the telephone management server and another telephone management server is unified by a common channel signaling method applied to an IP network. The mobile phone 1 which is an IP terminal and is within the range of the wireless communication area 1 of the wireless base station 1 is: It is assumed that the mobile phone 1 moves to a geographical position where it communicates with the wireless base station 2 and continues to communicate with the IP terminal while continuing communication with the IP terminal via the wireless base station 2 -IP terminal. A method of controlling connection between terminals using an IP network. The IP network is composed of a plurality of IP networks Nl,..., Nk (k = 1, 2,...), And the IP network (Nm) and the IP network (Nn) are connected via an IP communication line. They are connected directly or indirectly via another IP network (N-k). The IP network Nm includes a telephone number server m dedicated to the mobile telephone, and the root telephone number server dedicated to the mobile telephone is an IP network Nm. The telephone number server Nm can obtain the IP address and the related information related to the telephone number of the telephone number server Nn via the root telephone number server dedicated to the mobile telephone, and the plurality of mobile telephones can be obtained. Using a root telephone management server dedicated to telephones, telephone communication via a communication path that is the mobile telephone 1-the wireless base station 3-the IP network Nm-the IP network Nn-the wireless base station 2-the mobile telephone 2 or the fixed telephone 2 While the mobile phone Moves within the range of the wireless communication area 3 of the wireless base station, and continues telephone communication with the mobile telephone 1-the wireless base station 3-the IP network Nm-the IP network Nn-the wireless base station 2-the mobile telephone 2 or the fixed telephone 2 Terminal-to-terminal communication connection control method using an IP network. The method according to any one of claims 14 to 17, wherein when the handover is performed, the internal address as the location information of the telephone after the movement is rewritten as a record of the mobile telephone registration table inside the telephone number server dedicated to the mobile telephone. An inter-terminal communication connection control method using the described IP network. The method for controlling connection between terminals using an IP network according to any one of claims 14 to 17, wherein a CIC management table including at least a line number, a source telephone number, and a destination telephone number is used for connection control. 18. The method according to claim 14, wherein an initial value of a CIC management table newly used after the movement of the mobile phone is obtained by referring to a CIC management table used before the movement of the mobile phone. An inter-terminal communication connection control method using an IP network. 18. The IP network according to claim 14, wherein the wireless base station uses a wireless base station address management table including an external IP address, a port number, and a wireless line identification symbol used for voice communication. Communication control method between terminals. 18. A terminal using an IP network according to claim 14, wherein a server address table including address information of a telephone management server, a wireless base station, and a mobile proxy telephone server is used for connection control. Inter-communication connection control method. An internal IP address for encapsulating an external packet for voice communication is stored in a terminal gateway address management table, and the internal IP address is managed separately while being used and not being used. 18. A method for controlling communication connection between terminals using an IP network according to any one of the above items. 18. The IP network according to claim 14, wherein the telephone number server dedicated to the mobile telephone includes at least a password corresponding to the mobile telephone, and the password is used for authentication of the calling telephone or the receiving telephone. Communication connection control method between terminals using the method. A terminal location identifier of a terminal, an external address, and an internal address for connecting the terminal to an IP network are registered in a domain name server in the IP network, and a request from one terminal is transmitted to the domain name server. And the terminal location identifier of the terminal 2, obtain address information related to the terminal 1 and the terminal 2, set the communication record 1 in the network node device 1 on the terminal 1 side, and An IP network, wherein a communication record 2 is set in the network node device 2 to enable transmission and reception of IP packets between the terminal 1 and the terminal 2 using the communication record 1 and the communication record 2 Communication connection control method between terminals used. The terminal location identifier and the external address of the terminal are registered in a domain name server in the IP network, and the terminal location identifiers of the terminal 1 and the terminal 2 are presented to the domain name server in response to a request from one of the terminals. 1 and the external address information related to the terminal 2 are obtained, and a communication record 1 is set in the network node device 1 on the terminal 1 side, and a communication record 2 is set in the network node device 2 on the terminal 2 side. A method for controlling communication connection between terminals using an IP network, comprising enabling transmission and reception of IP packets between the terminal 1 and the terminal 2 using the communication record 1 and the communication record 2. 27. The method according to claim 26, wherein the internal packet transferred inside the IP network includes a source address and a destination address. 27. The method according to claim 26, wherein the internal packet transferred inside the IP network includes a destination address and does not include a source address. 28. The inter-terminal communication connection control method using an IP network according to claim 26, wherein the set communication record 1 and communication record 2 are deleted in response to a request from the terminal 1 or the terminal 2. By registering the terminal location identifier "URL" of the terminal whose communication path setting is to be rejected in the path setting rejection table in response to a request from the terminal 1 or the terminal 2, the setting of the communication record 1 and the communication record 2 can be rejected. 28. The inter-terminal communication connection control method using an IP network according to claim 26 or 27. In response to a request from the terminal 1 or the terminal 2, the range of the domain name for which the setting of the communication path is permitted is registered in the path setting permission table, so that the setting of the communication record 1 and the communication record 2 can be permitted. 28. The method of controlling connection between terminals using an IP network according to claim 26. 28. The method according to claim 26, wherein the internal packet transferred inside the IP network includes at least an internal destination address and does not include an internal source address. A communication path is set between a content delivery server and a terminal -j (j = 1, 2,..., N) by the terminal communication connection control method using an IP network according to claim 26 or 27, A method for implementing a content delivery service using the communication path. A communication path is set between an ASP server and a terminal -j (j = 1, 2,..., N) by the terminal communication connection control method using an IP network according to claim 26 or 27, An ASP service implementation method including at least a specialized program execution task or a data storage task using a communication path. A communication path is set between a WWW server and a terminal -j (j = 1, 2,..., N) by the terminal communication connection control method using an IP network according to claim 26 or 27, An information providing service implementation method using a WWW server using a communication path. The IP network includes two or more communication line connection units, an external IP packet is input to an inbound communication line connection unit, and the external IP packet is transferred inside the IP network and is transmitted via an outbound communication line connection unit. The communication between the two terminals connected to the IP network by being transferred to the outgoing communication line is possible, and the IP address of the terminal is registered in the communication line connection unit of the IP network, When the transmitted IP packet is input to the incoming communication line connection unit via the communication line, and the incoming communication line connection unit detects an IP packet including an unregistered IP address as a source address, the IP packet is discarded. A terminal communication connection control method using an IP network, thereby preventing unnecessary IP packets from being input to the IP network. An address inspection function router having a function of performing the terminal communication connection control method according to claim 37.

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