JP3813603B2 - Inter-terminal communication connection control method using IP network - Google Patents

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, and a mobile phone and a voice image apparatus connected to the IP network Continues via the IP network while moving its geographical location, sets a communication path between any terminals that have registered address information based on user requests, and causes a large inflow of illegal IP packets into the IP network The present invention relates to an inter-terminal communication connection control method using an IP network to be prevented.

  As conventional techniques related to the present invention, there are Japanese Patent No. 3084861 (Patent Document 1) by the present applicant and Japanese Patent Application No. 2002-164497 (Patent Document 2) by the present applicant.

Patent Document 1 discloses a method for performing IP communication by presenting an IP encapsulation technique and a telephone number to a domain name server by obtaining an IP address in an integrated information communication system that is an IP packet transfer network employing an IP encapsulation technique. Etc. are realized.
<< Encapsulation Technique (Patent Document 1) >>
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 an address “E1” and terminal 11 has an 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 and 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 to the network node device 2, the record (capsule control record) (provided that the internal address “I1”) is satisfied from the plurality of records in the device control table 15 (1). Including). Here, AND represents an AND of logic operations, and “E1” and “E2” are external addresses included in the external IP packet 17. “M1, N1, M2, N2” is included in the record in the device control table 15.

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

When the internal packet 18 is transferred through the IP network 1 and reaches the network node device 3, it is restored under the management of the device control table 16 to become the external packet 19, and the external packet 19 is given the internal address "I2". Then, the data is transmitted to the terminal 11 via the communication terminal 14 via the logic terminal at the end of the communication line 14.

When the destination address “E2” of the external packet changes, the above equation (1) is examined for other records in the device control table 15, and the destination of the internal packet 18 changes (network node device exchange function). 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. 3048681 Japanese Patent Application No. 2002-164497

  In order to implement the inter-terminal communication connection control method using the IP network, (1) the terminal connected to the wireless LAN communicates with another terminal via the IP network or the mobile communication network, and (2) the IP network Continue communication between terminals while moving the geographical position of a mobile phone or wireless terminal to be connected or a portable audio image device, and (3) a communication path between two terminals between any terminals connected to the IP network. There is no inter-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 intra-network congestion caused by a large amount of IP packets including unregistered IP addresses flowing into the IP network and DOS attacks. The present invention aims to solve these unsolved problems.

  In the present invention, (1) an authentication server is installed in the IP network so that the terminal communicates with other telephones, wireless terminals, and voice image devices via the wireless LAN, IP network, and mobile communication network. This is achieved by performing an authentication procedure for an internal terminal. More specifically, the wireless LAN is connected to one of the network node devices of the IP network via a communication line from the media router 1 in the wireless LAN. The wireless LAN includes the terminal 1, and the terminal 2 passes through the media router 2. When connecting to one of the network node devices of the IP network via a communication line, the terminal registration table is set inside the media router 1, and when connecting from the terminal 1 to the terminal 2, the terminal 1 is stored in the terminal registration table. Communication connection control including a procedure for obtaining a transmission permission based on management, and when connecting from the terminal 2 to the terminal 1, the communication connection including a procedure for the terminal 1 to obtain 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, the IP network, and the mobile communication network based on the management of the terminal registration table.

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

Further, (2) two or more telephone managements installed in the IP network in order to continue communication between terminals while moving the geographical position of the mobile telephone connected to the IP network or the portable voice image device. This is accomplished by performing a series of call connection control procedures for changing the geographical location of the mobile telephone between servers. More specifically, the IP network performs inter-mobile telephone communication between the mobile telephone 1 and the mobile telephone 2, and telephone communications between the mobile telephone and the fixed telephone via the IP network. During this, handover communication is performed in which telephone communication is continued at least by changing the radio base station. When the handover communication is performed, the internal address that is the location information of the telephone after movement is rewritten as a record in the mobile telephone registration table in the telephone number server dedicated to the mobile telephone. A mobile phone 1 within the radio communication area 1 of the radio base station 1 passes through the mobile phone 1 -the radio base station 1 -the termination gateway 1 -the termination gateway 2 -the radio base station 2 -the mobile phone 2 or the fixed phone 2 Then, while continuing the telephone communication with the mobile telephone 2 or the fixed telephone 2, the mobile telephone 1 moves to a geographical position where the mobile telephone 1 communicates with the radio base station 3 managed by the termination gateway 3, that is, the mobile telephone 1-the radio base station 3 Termination gateway 3—Termination gateway 2—Radio base station 2—Telephone communication continuation method based on a method of continuing telephone communication with the mobile telephone 2 or the fixed telephone 2 via the mobile telephone 2 or the fixed telephone 2 (handover) It is.
(3) A terminal location identifier of the terminal, an external address, and an internal address for connecting the terminal to the IP network are registered in the domain name server in the IP network, and the terminal is connected to the domain name server in response to a request from one terminal. 1 and the terminal location identifiers of the terminals 2 are presented, the address information (external address and internal address) related to the terminals 1 and 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, the communication record 2 is set in the network node device 2 on the terminal 2 side, and IP packets can be transmitted and received between the terminal 1 and the terminal 2. Further, the set communication record 1 and communication record 2 are deleted in response to a request from the terminal 1 or the terminal 2.
(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. This prevents unnecessary IP packets from flowing into the IP network and prevents communication congestion in the IP network.

  According to the present invention, a terminal including a telephone number and an IP address registered in a telephone number server in the IP network so that a terminal connected to the wireless LAN can connect to the IP network and communicate with other terminals. A registration table is installed in a media router in the wireless LAN, and an authentication procedure for a terminal in the wireless LAN is performed to solve the inter-terminal communication connection control method using the IP network. Also, two or more telephone management servers are installed in the IP network in order to continue communication between terminals via the IP network while moving the geographical location of the mobile phone, wireless terminal, and voice image device connected to the IP network. It implements a method of solving a terminal-to-terminal communication connection control method using an IP network by installing a series of call connection control procedures for changing the geographical position of a telephone.

  Further, to allow a communication path setting between two terminals between arbitrary terminals connected to the IP network and to reject the communication path setting, and to provide a terminal communication connection connection control system using the IP network, respectively. In addition, the terminal address related information is registered in the IP network server, and the communication path setting permission between the two terminals is determined using the registration information in the server, so that the inter-terminal communication connection using the IP network is performed. A method to solve the control method is realized.

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

  The present invention relates to an IP encapsulation technique disclosed in Patent Document 1, a method for acquiring an IP address using a telephone number as a domain name, a fixed telephone disclosed in Patent Document 2, and a method for implementing a mobile telephone. By introducing a new method, (1) using an IP network in which a mobile phone, a wireless terminal, and a voice image device communicate with other telephones and a voice image device via a wireless LAN, an IP network, and a mobile communication network An inter-terminal communication connection control system; (2) an inter-terminal communication connection control system using an IP network that continues inter-terminal communication while moving the geographical location of a telephone or audio image 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 in the IP network in response to a request from one of the terminals. IP (4) The IP address of the terminal is registered in the communication line connection unit of the IP network, and the IP network This is achieved by discarding an IP packet including an unregistered IP address, thereby preventing an unnecessary IP packet from flowing into the IP network.

Since the present invention is premised on the IP network disclosed in Embodiment 8 of Patent Document 2, it will be described as an IP network that is the 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 that can implement all of fixed telephone, mobile telephone, and multimedia communication.

  In FIG. 1, an IP network 900 includes termination gateways 901-1 to 901-5. Each of the fixed telephones 905-1 to 905-4 is connected to one of the media routers 903-1 to 903-4 via a wired communication line, and each of the mobile telephones 905-5 to 905-8 is wirelessly communicated. It can be connected to one of the radio base stations 902-1 to 902-4 via a line. The radio base station to which the mobile phones 905-5 to 905-8 are connected is not fixed. The media router and the radio base station are connected to one of the network node devices via a communication line having an IP packet transfer function. Reference numerals 905-10 to 905-17 are terminals having an IP packet transmission / reception function, and each is connected to a media router via a communication line. 1 includes FIG. 92 for explaining Example 8 of the patent document 2 (fixed telephone, mobile telephone, and multimedia communication performed in the same IP network), including the radio base station 902-5, the mobile telephone after movement. FIG. 92 is a diagram in which 905-6y and 905-6z, a movement 905-21 during a call of the mobile telephone 905-6, and another movement 905-22 during a call are added to FIG. Therefore, FIG. 1 of the present invention can implement Example 8 of Patent Document 2.

  An operation management server 915 of the IP network 900 is connected to the router 911-1 via a communication line. The mobile telephone can be any of a voice telephone, a telephone with an image input / output function, a voice image transmitting / receiving apparatus, and a mobile terminal. The termination gateway 901-1 includes a network node device 906-1 and a termination control unit 914-1, the network node device 906-1 includes a device control table 910-1, and the termination control unit 914-1 is 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 via a communication line. Similarly, the termination gateway 901-2 includes a network node device 907-1 and a termination control unit 914-2, the network node device 907-1 includes a device control table 910-2, and the termination control unit 914-2 is 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 description will be divided into communication cases 1, 2, 3, 4 and 6 (excluding communication case 5).
<< Communication case 1: Communication between fixed telephone and fixed telephone >>
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. Is “TN2”. Call connection control in the IP network 900 is based on the common line signaling method (steps A21, A34, A44, A54, A74, A84).
<< Phone number registration for fixed telephones >>
The fixed telephone registration method 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 905-1 determines the external IP address “EA1” and the telephone number “TN1” of the fixed telephone 905-1, applies to the telephone receptionist 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 symbol and the IP address of the lower telephone number server 906-5. You can 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 exchange information with each other (FIG. 4). .
<< Communication Case 2: Communication between Mobile Phone and Mobile Phone >>
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. The number is “TN4”. The call connection control in the IP network 900 is based on the common line signal system (steps B21, B34, B44, B54, B74, B84).
<< Mobile phone number registration >>
The registration method of the mobile telephone and the setting of the communication record of the device control table in the communication case 2 are described with reference to FIG. 1 and FIG.

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). The telephone number server 995 is configured to hold 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 position in the IP network 900. The radio base station 902-3 exchanges information with the mobile telephone 905-6 to confirm communication possibility, and further performs a series of steps (steps Q10 to Q16 in FIG. 7), and at least the telephone number “TN3” and the terminal The authentication information “PID3” is notified to the upper 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 is pass or fail. 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 a state where the initial location registration of the mobile phone has been completed, the mobile phone 905-6 changes its location and happens to enter the radio base station 902-4 via the radio communication line 917-7 (FIG. 1). This is a connected case. 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). As a result, the telephone number server 909-5 has the telephone number “TN3”. The terminal authentication information “PID3” and the related address are acquired (step Q15x) and notified to the upper 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 mobile telephones and radio base stations are disclosed and described below. In FIG. 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. An interface unit, 952-1 is an analog mobile phone, 952-2 is a digital mobile phone, 952-3 and 953-4 are IP mobile phones, and 953-1 to 953-4 are wireless communication paths. In FIG. 11, an IP packet including a telephone line connection control message and digital voice is transmitted / received to / from an IP communication line 950-3 between the network node apparatus 950-2 and the radio base station 951-1. Also, telephone line connection control messages and digital voice are transmitted and received in the form of radio signals on the radio communication paths 953-1 to 953-4.
<< Communication Case 6: Inter-terminal communication for setting a communication record >>
FIG. 12 is a technique disclosed as the communication case 6 of Example 8 of Patent Document 2, and a communication path for enabling communication from the terminal 905-11 to the terminal 905-11 and the 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 the telephone number server 906-5 (step K07), and the terminal 905-14 is identified. Address information corresponding to the name is acquired (step K08). 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 to set the communication path ( 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 sets 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). A 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).
<< Between terminals via mobile communication network and IP network >>
Patent Document 2 describes an inter-terminal connection control method based on a common line signal system via a mobile communication network and an IP network, which will be outlined below. In Example 1 of Patent Document 2, a connection for terminal-to-terminal communication is requested from a terminal 152 (FIG. 13), a terminal 152-media router 153-IP network 145-mobile communication network 146-wireless base station 159-terminal 160 An inter-terminal connection control method based on a common line signal system that connects to a terminal 160 via a communication path is disclosed. Here, the terminal 152 and the terminal 160 are terminals having a telephone and audio image transmission / reception function, and the terminal 160 further 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 reception (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 media router 153 receives an initial based on the common line signaling method. An address message (IAM) is formed and transmitted (step G05), and the relay control unit 155 in the relay gateway 145-3 uses the initial address message (IAM) in the format used in the mobile network 146. ) (Step G06), and the initial address message passes through the relay controller 156 in the relay gateway 146-2 and the termination controller 158 in the relay gateway 146-3. The procedure is performed (steps G07 to G49), and the terminal 152, the terminal 160, Channel between is established. In the case where both the terminal 152 and the terminal 160 are telephones, digitized telephone voice is transmitted and received in step G50-2. In the case where the terminal 152 and the terminal 160 have a sound image transmission / reception function, a control procedure for sound image communication is performed (step G50-1), and then a medium such as a sound image is transmitted / received (step G50-2). ), An audio / video communication end control procedure is executed (step G50-3). Next, the terminal 152 issues a release request (step G51), a series of procedures are performed (steps G52 to G71), and the inter-terminal communication ends. Further, Patent Document 2 discloses a connection request control method in the opposite direction, that is, a terminal-to-terminal connection control method based on a common line signal system in which the terminal 160 is a transmission side and the terminal 152 is a reception 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. In the present embodiment, in the implementation of the assumed IP network, the radio base station is in a logical communication path that passes through the telephone 952-1 (FIG. 10) —the radio base station 951-1—the network node device 950-2. 951-1 is replaced with a wireless unit 1203 (FIG. 15) and a media router 1219, which corresponds to an embodiment in which a telephone or a terminal having a wireless interface is implemented inside the LAN 1200.

  In FIG. 15, 900 is an IP network (IP communication network), 901-1 and 901-4 are termination gateways, 906-1 and 909-1 are network node devices, 906-4 and 909-4 are telephone management servers, 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 shown in FIG. 1 except for the communication line 1230. It is the same code | symbol 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 are wireless units, 1204 to 1206 are wireless transmission / reception units, 1207 to 1209 are IP processing units, 1210 to 1212 and 1211x are wireless communication paths, 1214 to 1216 are communication lines, and 1217 Reference numerals 1212 to 1218 denote routers, 1219 denotes a media router, 1220 to 1223 denote terminals having IP packet transmission / reception functions (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. Radio units 1201 to 1203 include radio transmission / reception units 1204 to 1206 in this order, and similarly include 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. Terminals 1221 and 1222, router 1218, and wireless unit 1202 can send and receive IP packets to and from each other via communication line 1215. The terminal 1223, the media router 1219, the authenticated telephone number server 1224, and the wireless unit 1203 can send and receive IP packets to each other via the communication line 1216.

  Reference numeral 500 (in FIG. 15) denotes a wireless terminal having an IP packet transmission / reception function, which 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 a telephone function.

  Reference numeral 1260 (FIG. 16) denotes 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 a port number used by the terminal, a telephone usage status (on / off) of the terminal, a telephone identification symbol, and a mail address. For example, the record in the first line excluding the title part of the terminal registration table 1260 is “1, TN1,“ E1 ”, 5002, off, T1220, mm1@b1.cc.. The meaning of the record in the line is “1” for the record number, “TN1” for the telephone number, “E1” for the IP address, “5002” for the port number, “pause” for telephone use, and “T1220” for the telephone identification number. In this example, the email address is “mm1@b1.cc.

  The terminal registration table 1260 is set in the media router 1219 (FIG. 15). As another embodiment, the terminal registration table 1260 can be set in the authenticated telephone management server 1224 (FIG. 15). The media router 1219 is a router whose function is expanded to handle digital telephones and images. 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, the encryption initial value 1229 is an initial value in the stream encryption technique, and the encryption determination value 1230 is, for example, data integrity (using encryption technology) This is determination data representing a kind of error detection code. When the cryptographic function is used, that is, when the cryptographic initial value 1229 and the cryptographic determination value 1230 are used, the range of the IP packet 1226 stores a ciphertext. The IP processing unit 1208 and the like include an encryption key and include an encryption or decryption function.

  An example in which IP packets are 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”. Terminal 1222 forms IP packet 1231 and sends it to 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, IP packet 1231 is converted into ciphertext in IP processing unit 1208 (step C02), and the generated ciphertext, cipher initial value, and cipher determination value are attached and sent to radio transmitting / receiving unit 1205 (step C03). ). At this time, the IP packet 1231 is 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 sent 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 C 06), and sends the ciphertext IP packet 1241, the cipher initial value, and the cipher determination 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), sends it to the communication line 1216 (step C09), and the terminal 1223 sends the restored IP packet 1231. Receive. The IP packet transfer in the reverse direction is also possible as described above, and the IP packet 1234 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. Then, the terminal 1222 is reached (step C11 to step C19). When the encryption function is not used in the procedure, the IP packet 1241 in the MAC frame 1232 is plain text.

  Next, a case where an IP packet is transmitted and received between the terminal 1222 and the terminal 1223 and the IP packet is IP-encapsulated or decapsulated in the IP processing units 1208 and 1209 will be described with reference to FIG. In this case, the IP processing unit 1208 has an IP address “J1”, and the IP processing unit 1209 has an IP address “J2”. The terminal 1222 forms and sends an IP packet 1237 (step D01), and the IP processing unit 1208 converts the IP packet 1237 into ciphertext. Subsequently, the IP processing unit 1208 collectively encapsulates the generated ciphertext, cipher initial value, and cipher 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 transmission / reception unit 1205 forms a MAC frame 1238 including the internal IP packet 1244 (step D04). Next, the MAC frame 1238 is sent 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 MAC frame 1238 (step D06), and sends it to the IP processing unit 1209 (step D07). The IP processing unit 1209 extracts the encrypted IP packet 1244 from the internal IP packet 1244, decrypts the IP packet 1244, decrypts it into a plaintext IP packet 1239 (step D08), and sends it to the communication line 1216 ( In 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 described 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. The terminal 1222 is reached (steps D11 to 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, and the wireless communication path 1210 The IP packet can be transmitted / received via the wireless transmission / reception unit 1204 and the IP processing unit 1207.

Next, referring to FIG. 20, a telephone number is presented from an arbitrary terminal in the wireless LAN, for example, from the terminal 1222 to the telephone number server with authentication function 1224 (steps 1271 to 1273), and the telephone having the telephone number. The IP address and port number used by the terminal can be acquired (steps 1274 to 1276). Here, an IP packet including a telephone number is presented to the telephone number server, and a known technique for acquiring an IP address or a port number can be used.
<< Transmission from terminal inside wireless LAN >>
Next, a terminal-to-terminal communication connection control method for telephone communication from the terminal 1222 including the telephone function to 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 of the media router 903-4 for accessing the telephone 905-4 The address is “E2”. In this case, the telephone 905-4 side serving as the incoming side substantially matches the communication connection control procedure on the incoming 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. (Some procedures between the network node device 906-1 and the network node device 903-4 described in FIG. 2 are partially omitted, and the network node device 906-1 and the network node device 903 in FIG. -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 inter-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 a call connection request, the call connection request is transmitted to the media router 1219 (steps M01, M3a, M3b, M3c, and M3d in FIG. 21), and the media router 1219 has its internal terminal registration table. 1260 (FIG. 16), it is confirmed whether the telephone number “TN1” and the IP address “E1” of the terminal 1222 are registered in the first line record excluding the title part of the 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 other cases 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. Terminal registration table is acquired (step M3f in FIG. 21), and using the acquired terminal registration table 1260, it is confirmed whether the telephone number “TN1” and the IP address “E1” are registered in the terminal registration table 1260. To do. In the procedure, when the telephone number “TN1” and the IP address “E1” are not registered in the terminal registration table, a call connection request rejection is answered in the procedure (steps M4a to M02), and the connection control shown below Do not implement the procedure.

  Further, in the above procedure, the terminal 1222 inquires the authenticated telephone number server 1224 in the wireless LAN 1200 (step M00a in FIG. 21), acquires an external IP address for accessing the IP network 900 (step M00b), In addition, communication connection control for calling the telephone 905-4 from the terminal 1222 can 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 to the network node device 906-1 via the communication line 1230 (FIG. 15). It is transmitted to the telephone management server 906-4 (step M06). The telephone management server 906-4 gets 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 (step M25). The media router 903-4 returns a packet notifying the possibility of incoming call, 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). ) 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, option), and then the telephone 905-4 to the terminal 1222 In-call notification is reported (steps M40 to M48). However, a call progress message (CPG packet) is transferred in the section (step M44) from the telephone management server 909-4 to the telephone management server 906-4. Next, a response notification is reported from the telephone set 905-4 to the terminal 1222 (steps M50 to M58). However, a response message (ANM packet) is transferred in the section (step M54) from the telephone management server 909-4 to the telephone management server 906-4.

  Next, the telephone management server 906-4 makes a request to the table management server described in another embodiment, and sets a communication record that specifies IP encapsulation or the like in the network node device 906-1 (step M66). Similarly, the telephone management server 909-4 sets a communication record defining IP encapsulation or the like in the network node device 909-1 (step M64). With the above procedure, the voice communication path between the terminal 1222 and the telephone set 905-4 was established.

Voice communication is performed between the terminal 1222 and the telephone set 905-4 by the same method as described in other embodiments (steps M68-1 to M68-5 and steps M69-1 to M69-5). When the voice communication is completed, a voice communication path release procedure is performed (steps M70 to M79 and steps M80 to M87). However, the release request message (REL packet) is transferred in the section (step M74) between the telephone management server 906-4 and the telephone management server 909-4, and the section between the telephone management server 909-4 and the telephone management server 906-4. In (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 set communication record for voice communication (step M96). Similarly, the telephone management server 909-4 uses the network node device 909-1. The communication record set in is deleted (step M98).
<< Incoming call of terminal inside wireless LAN >>
Next, an example in which the terminal 1222 inside the wireless LAN 1200 receives (incoming) 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 of the media router 903-4 for accessing the telephone 905-4 The address is “E2”. In this case, the side of the calling side telephone 905-4 coincides with the call side call connection control procedure 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. To do.

  The communication range 1200-3 (FIG. 22) between the terminal 1222 on the receiving side and the media router 1219 is a procedure for storing and transmitting the IP packet described with reference to FIG. 19 in the MAC frame. 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 it is registered (step N24a in FIG. 22).
<< Communication between wireless LAN-IP network and wireless LAN >>
Another terminal-to-terminal communication connection control method will be described with reference to FIGS. Reference numeral 900 denotes an IP network, and reference numeral 1200 denotes a wireless LAN, which has the same symbols and functions 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, and 1222R is a terminal including a telephone function. 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 having the same format as the terminal registration table 1260 (FIG. 21) for registering terminals in the wireless LAN 1200R.

As described above, the inter-terminal communication connection procedure that the terminal 1222 in the wireless LAN 1200 transmits is possible (FIG. 21), and the inter-terminal communication connection procedure that the terminal 1222 in the wireless LAN 1200 receives is possible ( As shown in FIG. 22), as shown in FIG. 23, communication between terminals connecting 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 (FIG. 22). 24 steps 1280 to 1284) and can also be transmitted 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 transmission / reception 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 a wireless communication function included in the wireless unit 1202, and the IP packet transmission / reception function module 1222x (FIG. 15) further includes an IP packet transmission / reception function included in the terminal 1222 and a telephone set. Includes functionality. Thus, the wireless terminal 500 can be used as a mobile phone used in a wireless LAN. Further, the wireless terminal 500 can be used as a terminal capable of transmitting / receiving digital data by transmitting / receiving IP packets, a mobile telephone capable of transmitting / receiving digitized images and sounds, and a sound image apparatus with wireless functions.

  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 communicates by telephone 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, or digitized images, sounds, and images. Communication is possible.

In order to perform 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, the communication line in the IP network 900 conforms to the common line signal system. A telephone call connection control message is sent and received. The common line signal system is based on the same principle as the telephone communication (FIGS. 21 and 22) between the terminal 1222 and the telephone set 905-4, for example.
<< Method for Connecting Wireless Terminal to Communication Network >>
A method of connecting the wireless terminal 500 to another communication network without using it inside the wireless LAN 1200 will be described. 500, 500-1, 500-2, and 500-3 (FIG. 25) are the same wireless terminals, and a different point is a difference in 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 for communicating with the wireless base station 902-5, the wireless terminal 500-1-wireless base station 902-5—inside the IP network 900—wireless base station 902-4 -It can communicate with the mobile phone 905-8 via the mobile phone 905-8. Further, the wireless terminal 500-1 communicates with the fixed telephone 905-4 via the wireless terminal 500-1-wireless base station 902-5-IP network 900-media router 903-4-fixed telephone 905-4. Is possible. Further, the radio terminal 500-1 is connected to the IP terminal by the common line signal system via the radio terminal 500-1-radio base station 902-5-inside the IP network 900-media router 903-4-IP terminal 905-17. 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 voices. Is possible. Similarly, the terminal 500-2 and the mobile phone 905-8 can communicate with each other via the IP network 900, and the terminal 500-2 and the fixed telephone 905-4 can communicate with each other via the IP network 900. Furthermore, communication is possible between the terminal 500-2 and the IP terminal 905-17 via the IP network 900.

  510 (FIG. 25) is a mobile communication network 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 radio base station 513 -the exchange 511 -the communication line 515 -the exchange 512 -the radio base station 514 -the mobile telephone 506. A telephone call connection control message according to the common line signal system is transmitted / received to the communication line 515, and telephone call connection control for telephone communication between the mobile telephone 505 and the mobile telephone 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-radio base station 513-exchange 511-communication line in the mobile network 510-switch 512-wireless base station 514-Communication with the mobile telephone 506 is possible via the mobile telephone 506. If mobile phone 506 can store and receive digital voice and image data IP packets, wireless terminal 500-3 and mobile phone 506 can send and receive IP packets and send and receive digitized images and voices. You can also. Instead of the mobile phone 506, a terminal having a wireless function and capable of transmitting and receiving digital data, voice, and images (sound image terminal with wireless function) is used to move between the wireless terminal 500-3 and the sound image terminal with wireless function. Communication is also possible via the communication network 510.
<< Wireless LAN-IP network-PSTN or communication via mobile communication network >>
FIG. 26 is a diagram for explaining 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 termination gateway, 604 and 605 are relay gateways, 606 is a relay switch, 607 is a termination switch, and 608 is a mobile communication network 609 is a mobile communication network switch (also referred to as a mobile network subscriber control station), 610 is a radio base station, 612 is a terminal of the public switched telephone network 602, 613 Is a terminal of the mobile communication network 601.

  In FIG. 27, from the wireless terminal 500 via the wireless communication path 1211x and the media router 1219, 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 are connected. A terminal-to-terminal communication connection control method 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, from the terminal inside the wireless LAN to the IP network. The communication connection control based on the common line signal system heading toward is implemented. The communication procedure range 602-5 (FIG. 27) is a known technique. Steps 631X to 658X are a communication path establishment phase of communication between terminals. In step 660X, voice, images, and the like are transmitted and received between terminals. Steps 664X to 678X are the communication path release phase of the inter-terminal communication. In steps 634X and 636X in the communication procedure range 600-5 and 602-5, communication connection control by the common line signal system is performed.

  FIG. 28 shows a terminal-to-terminal communication connection control method from the terminal 612 to the public switched telephone network 602, the IP network 600, and the wireless terminal 500 in the opposite direction. The communication procedure range 1200-6 (FIG. 28) and 600-6 is a common line signal system that goes from the IP network to the terminal in the wireless LAN, for example, as in the communication procedure range 1200-3 (FIG. 22) and 900-3. Based on communication connection control. The communication procedure range 602-6 (FIG. 27) is a known technique. The step of inter-terminal communication connection control in FIG. 28 is the same as the step in which “X” at the end of the step name in FIG. 27 is expressed as “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 the wireless terminal, the wireless LAN, the IP network, the public switched telephone network, and the terminal. The inside of the public switched telephone network performs connection control based on the common line signal system.

  FIG. 29 shows the terminal from the wireless terminal 500 through the wireless communication path 1211x and the media router 1219, through the termination gateway 603, the IP network 600, the relay gateway 605, the relay switch 608, the switch 609, and the wireless base station 610. 6 shows a method for controlling communication connection between terminals to 613. 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 terminal-to-terminal communication connection control method from the terminal 613 to the mobile communication network 601, the IP network 600, and the wireless terminal 500 in the reverse direction. Communication procedure ranges 1200-8 (FIG. 30) and 600-8 are similar to communication procedure ranges 1200-6 (FIG. 28) and 600-6, for example, and communication procedure ranges 602-5 (FIG. 30) are, for example, patents. This is similar to the inter-terminal communication connection control disclosed in Document 2 (FIG. 14). The steps of inter-terminal communication connection control in FIGS. 29 and 30 are the same as the steps shown in FIGS. In summary, communication between a wireless terminal and a terminal can be performed via a communication path connecting the wireless terminal-wireless LAN-IP network-mobile communication network-terminal, and the IP network and the mobile communication network have a common line signal system. Based on connection control.
<< 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 an authentication procedure for the terminal inside the wireless LAN is performed.

  The IP network includes two or more network node devices. The external IP packet is converted into an internal packet at the ingress network node device and transferred inside the IP network, and the external IP packet is restored from the internal packet at the egress network node device. The wireless LAN is connected to one of the network node devices of the IP network via a communication line from the media router 1 in the wireless LAN, and the wireless LAN includes the terminal 1 and the terminal 2 is connected to one of the network node devices of the IP network via the media router 2 via a communication line, and the terminal registration table is set in the media router 1 and connected from the terminal 1 to the terminal 2 When the terminal 1 connects to the terminal 1 from the terminal 2, the terminal 1 performs communication connection control including a procedure for obtaining the 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 the terminals 1 and 2 communicate via the wireless LAN and the IP network based on the management of the terminal registration table. can do.

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

  The wireless MAC frame transmitted / received within the wireless LAN can include an internal packet that is IP-encapsulated. It is also possible to perform communication connection control in which the terminal 1 obtains an external IP address for accessing the IP network by making an inquiry to the authenticated telephone number server in the wireless LAN 1 and then calls the terminal 2 from the terminal 1. The IP network used by the terminal 1 and the terminal 2 for communication between the communication terminals via the wireless LAN and the IP network is the IP network 900 disclosed by FIG. 1, that is, any of the fixed telephone, mobile telephone, and multimedia communication. An IP network that can be implemented 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, and the wireless LAN 1 includes the media router 1 and the communication line in the wireless LAN 1. Is connected to one network node device of the IP network, 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 The terminal registration table 2 is set inside the media router 1, and the terminal registration table 2 is set inside the media router 1. The terminal 1 and the terminal 2 may communicate via the wireless LAN 1, the IP network, and the wireless LAN 2. Is possible.

  The wireless terminal 500 used in the wireless LAN is a mobile telephone, and further has an wireless communication function and an IP terminal having an IP packet transmission / reception function. The wireless terminal is connected to the wireless part of the wireless LAN via a wireless communication path, further connected to the IP network via the media router, and has a telephone (fixed telephone or mobile phone) 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 capable of transmitting and receiving digitized images and sounds and as a sound image device with a wireless function. In addition, a wireless terminal can connect 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 and an IP terminal having an IP packet transmission / reception function. The wireless terminal can communicate with a telephone (fixed telephone or mobile telephone) connected to the mobile communication network and an IP terminal having an IP packet transmission / reception function by connecting to the mobile communication network via a wireless communication path and a wireless base station. In order to perform communication between wireless terminals, the inside of the IP network and the mobile communication network performs connection control based on a common line signal system.

The IP network used by the terminal 1 and the terminal 2 for communication between the communication terminals via the wireless LAN 1, the IP network, and the wireless LAN 2 is the IP network 900 disclosed in FIG. All of them are characterized by using an IP network that can be implemented.

2. FIG. 31 shows an IP network 900X in which the radio base stations 902-1 to 902-5 inside the IP network 900 (FIG. 1) are taken out to the outside. The wireless base stations 902-2 and 902-3 are connected to the termination gateway 901-3 via an IP communication line, and the wireless base station 902-5 is connected to the termination gateway 901-1 via an IP communication line. The base station 902-4 is connected to the termination gateway 901-4 via an IP communication line. Reference numerals 202 to 205 denote wireless communication areas, which indicate ranges in which wireless communication can be performed between the wireless base stations 902-2 to 902-5 and the mobile phone, respectively. The termination gateways 901-1 to 901-4 (in FIG. 1) include a telephone management server and other various servers. Each terminating gateway can include one or more proxy mobile phone servers, but this embodiment is an example in which the number of proxy mobile phone servers is one. The IP network 900X can perform functions equivalent to those of the IP network 900 in cooperation with external radio base stations, and resources (network node devices, servers, communication lines, etc.) in the IP network 900X are connected to the IP network 900. Are the same. There is no essential difference between the communication function that links the IP network 900X and the radio base station and the functional function of the IP network 900. Hereinafter, the IP network 900 and the IP network 900X will be described without distinction.

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

  In the termination gateway address management table 211 (FIGS. 31 and 37) managed by the telephone management server 908-4, the internal IP address “IA851” for encapsulating the IP packet storing the digital voice is the internal IP address value. It is specified that the proxy telephone server “IA43” is allowed to pass. The internal IP addresses “IA301, IA4, IA6, IA9” in the termination gateway address management table 211 indicate that the association with the proxy telephone server is undecided. Other telephone management servers 906-4 (FIG. 31), 907-4, and 909-4 also manage the termination gateway address management table.

  The radio base station address management table 212 (in FIG. 39) managed by the radio base station 902-3 is a source IP address (or an IP packet) transmitted from the radio base station 902-3 to the termination gateway via the communication line. A transmission address) and a source port number (or a transmission port number) and a radio channel identification symbol for communicating with the mobile telephone from the radio base station 902-3 via the radio channel. The first line excluding the title part of the radio base station address management table 212 is the source IP address “EA301”, the source port number “5006”, the radio channel identification symbol “WC3”, and the first line is in use. It is shown that. The second line shows the source IP address “EA301”, the source port number “5008”, the wireless line identification symbol “WC4”, and the second line shows that it is unused. The radio base station 902-3 performs allocation management of communication resources, that is, a source IP address, a source port number, and a radio line in response to the occurrence of a telephone call request, and as a result of the allocation management, the radio base station 902-3 Rewrite. The other radio base stations 902-1 to 902-5 also manage the same radio base station address management table.

  In this embodiment, the mobile telephone 905-6 (FIG. 31) and the mobile telephone 905-8 in the wireless communication area 203 are the mobile telephone 905-6, the wireless base station 902-3, the termination gateway 901-3, the IP The telephone communication is performed through the network 900X, the termination gateway 901-4, the radio base station 902-4, and the mobile telephone 905-8. As the next step, the mobile telephone 905-6 determines the position of 905-6Z. Then, it moves to the position of 905-6y and continues the telephone communication, that is, the mobile phone 905-6y, the radio base station 902-5, the termination gateway 901-1, the IP network 900X inside, the termination gateway 901-4, The continuation of the telephone communication via the radio base station 902-4 and the mobile telephone 905-6 will be described in the present embodiment.

In the following description, the mobile phone 905-6 (FIG. 31), the mobile phone 905-6z, and the mobile phone 905-6y are the same phone, but their location differs with time, and 905-6 is wireless. 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 located in the wireless communication area 205. It represents a mobile phone that is located.
<< Internal IP address delivery >>
Next, the internal IP address delivery method will be described with reference to FIG. 32 and FIG. Before the start of the telephone communication service, the operation management server 915 (FIGS. 1 and 33) delivers the internal IP address to the telephone management server 908-4 (step K1), and the telephone management server 908-4 manages the termination gateway address. In table 211 (FIG. 37), the received internal IP address “IA851, IA301, IA5, IA6, IA9” is written and held. 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 termination gateway address management table 211X (in FIG. 64). . Furthermore, the operation management server 915 delivers the internal IP address (step K7), and the telephone management server 909-4 holds the received internal IP address in its internal termination gateway address management table. The internal address “IA851” in the termination gateway address management table 211 (in FIG. 37) communicates between the proxy mobile phone server whose internal IP address value is “IA43” and the radio base station through the user network interface “UNI3”. In this case, the internal address “IA850” is assigned.
<< Main IP addresses >>
EA1 is the external IP address of the radio base station 902-5, IA1 is the internal IP address of the logical terminal of the communication line connected to the radio base station 902-5, EA3 is the external IP address of the radio base station 902-3, and IA3 is The internal IP address of the logical terminal of the communication line connected to the wireless base station 902-3, EA4 is the external IP address of the wireless base station 902-4, and IA4 is the logical terminal of the communication line terminal connected to the wireless base station 902-4 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. The internal IP address of -6, IA44 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 is the (internal) IP address 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 telephone number server do not have external IP addresses.

EA301, EA401, EA101 are external IP addresses used in the communication phase such as digital voice transmission / reception, IA301, IA401, IA101 are internal IP addresses used in the communication phase 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, and the port number "5008" is the source port number used when the radio base station 902-4 transmits digital voice. “5012” is a source port number used when the radio 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 (SIP or the like) between terminals. Note that 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 head 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, IP packets to which an internal IP address is assigned among the IP addresses are transmitted and received.
<< Initial location registration of mobile phone >>
A procedure for registering the 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 the mobile telephone 905-8 having the telephone number "TN4" from the mobile telephone 905-6 having the telephone number "TN3" (ie, step B01 to step B01). B60-4) will be described. The call connection control flow is a call control flow for calling the mobile telephone 905-8 from the mobile telephone 905-6 shown in the call connection control of the IP network (Embodiment 8 of Patent Document 2) as a premise of the present invention (see FIG. 5), which is almost the same as steps B01 to B60-4, but the expression format of the CIC management table for managing telephone calls, the IP address and port number acquisition method, and the server address values are as follows. It has changed in the embodiment. Further, a telephone number server 996 (FIGS. 31 and 33) dedicated to mobile phones is used as the telephone number server.

  When a call connection request is transmitted from the telephone set 905-6 (step B01), the radio base station 902-3 returns (step B02). Next, the telephone set 905-6 sends a call setting request including the transmission 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. Uses the radio base station address management table 212 (FIG. 39) to obtain the external IP address “EA301” and port number “5006” for voice communication, the UNI “UNI3”, and the radio channel identification symbol “WC3”. A call setup request IP packet 213 (FIG. 40) including the external IP address “EA301”, port number “5006” and 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” and the radio channel identification symbol “WC3” of the communication line 917-3 (FIG. 31).

  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 acquired from the IP packet 215. The item “IAM” and time “St3” are set. Further, the telephone management server 908-4 sends an IP packet 216 (FIG. 43) including the telephone numbers “TN3” and “TN4” to the telephone number server 996 dedicated to the mobile telephone (step B07x). Then, using the internal mobile telephone registration table 210 (FIG. 36), an IP packet 217 (FIG. 44) including various IP addresses, UNI, and PID corresponding to the telephone numbers “TN3” and “TN4” is returned (step 44). B08x).
<< Comparison and update of address for voice communication >>
The telephone management server 908-4 has an internal IP address (in this case, “IA301”) for encapsulating the digital voice packet transmitted by the radio base station 902-3 in the IP packet 217 (FIG. 44). (For example, immediately after the radio base station opens) or whether the internal IP address “IA301” is included as an assigned item in the termination gateway address management table 211 (in FIG. 37). In this case, since it is divided into unallocated areas, the internal IP address “IA301” is changed to an allocated item. For this purpose, the telephone management server 908-4 rewrites the termination gateway address management table 211 as the termination gateway address management table 211Z (in FIG. 37). In the case where “IA301” is not included as an unassigned IP address in the termination gateway address management table 211, another IP address, for example, “IA5” is transferred to the address allocation area of the termination gateway address management table 211Z.

  Next, the telephone management server 908-4 determines the external IP address (EA301 in this case) for the digital voice packet acquired from the IP packet 217 (FIG. 44) and the digital voice packet acquired from the IP packet 215 (FIG. 42). It is checked whether the value matches the external IP address (EA301 in this case) for the digital IP packet 217, and the internal IP address (EA301 in this case) obtained from the IP packet 217 and the termination gateway address management table It is checked whether or not the value of the IP address (IA301 in this case) acquired from 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. In the 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) acquired from the IP packet 215 and the IP address (for example, the IP address acquired by the above procedure from the termination gateway address management table 211Z) IA301) is written in the telephone number server 966 (step B08y in FIGS. 32 and 33). Thus, when the external IP address for digital voice (eg, EA301) transmitted from the mobile phone 905-6 side is changed to a new value (eg, changed from EA301 to EA301x), the mobile phone 905 is changed. The address value in 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 various IP addresses acquired from the IP packet 217 (FIG. 44) and UNI4 to the CIC management table 908-4A (FIG. 55), and the result is the CIC management table 908-4B (FIG. 55). This is shown in the first line record of FIG.

  Next, the telephone management server 908-4 forms an IP packet including at least call setting acceptance and an authentication request and sends it to the proxy mobile telephone server 908-6 (step B09). The authentication request is sent to the network node device 908-. 1. The telephone 905-6 is reached via the wireless base station 902-3 (step B10 to step B12). As the authentication password used for the authentication request, “PID3” acquired from the IP packet 217 (FIG. 44) is used. The telephone 905-6 returns an authentication reply (pass / fail of terminal authentication), and the authentication reply is sent to the telephone management server 908-4 via the radio base station 902-3, the network node device 908-1, and the proxy mobile telephone server 908-6. (Step B13 to Step B16). The telephone management server 908-4 sends an IP packet including at least terminal authentication pass / fail to the proxy mobile telephone server 908-6, and at least the terminal authentication pass / failure information passes through the network node device 908-1 and the radio base station 902-3. The telephone 905-6 is notified (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), and makes 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 a terminal authentication function, the password “PID3” held in the mobile telephone registration table 210 is used for terminal authentication pass / fail determination of the caller 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, 5006, IA3, EA3, IA301, EA301, IA43, EMB) in the IP packet 218. , UNI3,
IA4, EA4, IA401, EA401, IA44, PID4, UNI4, IA13, IA14), and the CIC management table 909-4A (FIG. 59) is formed. At this time, the write time “St4” is also written. Note that the address information in the CIC management table 909-4A is opposite to that of the CIC management table 908-4B (FIG. 56).

  Next, the telephone management server 909-4 forms an IP packet 219 (FIG. 46) including a 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 the IP packet 221 (FIG. 48), and then transmits the IP packet 221 to the radio base station 902-4 (step B24). Based on the received IP packet 221, the wireless base station 902-4 temporarily notifies the telephone call 905-8 via the wireless communication path 917-6 (FIG. 31) (step B25). The telephone set 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 the password). The legitimacy related information reaches 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 (steps B27a to B27d). The telephone management server 909-4 discriminates the terminal validity request information and sends out an IP packet including terminal authentication pass / failure information. The terminal authentication pass / failure information includes proxy mobile telephone server 909-6, network node device 909-1, base The telephone 905-8 is reached via the station 902-4 (step B28a to step B28d). As a terminal authentication function, the password “PID4” held in the mobile telephone registration table 210 is used for terminal authentication pass / fail determination of the telephone 905-8 on the called side (steps B26a to B33).

  Next, the radio base station 902-4 notifies the telephone set 905-8 of a call (incoming call) (step B30). Next, the radio base station 902-4 generates an IP packet including the telephone numbers “TN3” and “TN4” and the incoming / outgoing possibility report information and notifies the telephone management server 909-4 (steps B31 to B33). As the authentication password used for the authentication request, “PID4” of the password acquired from the internal packet 218 (FIG. 45) is used. The telephone management server 909-4 extracts the transmission source telephone number “TN3”, the destination telephone number “TN4”, and incoming / outgoing report information from the received IP packet. Then, the line number “CIC-7” is calculated from the two telephone numbers, the procedure item in the CIC management table 909-4A (FIG. 59) is rewritten from “IAM” to “ACM”, and the line number “CIC-7”. 49 is transmitted, and the ACM packet 222 is transmitted to the telephone management server 908-4 (step B34) The telephone management server 908-4 transmits the incoming / outgoing report information to the radio base station 902. -3 can also be notified (steps B35 to B37, option).

  When the radio base station 902-4 receives a telephone call notification from the telephone 905-8 (step B40), the call notification is sent via the network node device 909-1 and the proxy mobile telephone server 909-6 to the telephone management server 909. -4 (step B41 to step B43). The radio base station 902-4 includes the port number “5008” used for digital voice transmission and the radio channel identification symbol “WC4” of the radio channel 917-6 in the ringing notification. The telephone management server 909-4 extracts the port number “5008” and the wireless line identification symbol “WC4” from the notification during calling and writes them in the CIC management table 909-4A (FIG. 59). Rewrite as “CPG”. The result is the CIC management table 909-4B (FIG. 60) except for the description of the procedure items. In addition, the value at the time of another step is written in the procedure item.

  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 and writes it in the CIC management table 908-4B (FIG. 56). Further, the procedure item in the CIC management table 908-4B is stored. The result is rewritten as “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 in-call 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 (steps B45 to B45). Step B48).

Next, the telephone 905-8 responds to the call (step B50), and this 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. Reach (step 51 to step 53). The telephone management server 909-4 can also return a response confirmation to the radio base station 902-3 (steps B60-1 to 60-4, option). The telephone management server 909-4 forms and sends 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 the 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). The telephone management server 909-4 can also notify the telephone management server 908-4 by including the port number “5008” in the ANM packet 224 (optional). The telephone set 905-6 can also return a response confirmation to the radio base station 902-3 (step B59, option).
<< Communication Record Settings >>
The telephone management server 909-4 refers to the CIC management table 909-4B (FIG. 60), acquires communication record write information, and transmits it to the table management server 909-3 (step B64). 909-3 is set as the record “IA401, IA301, EA401, EA301, M255, M255,...” In the fourth row of the device control table 910-4 (FIG. 53) inside the network node device 909-1 (step). B65). Here, the mask information M255 is assumed to be “255.255.255.255”. Similarly, the telephone management server 908-4 refers to the CIC management table 908-4C (FIG. 57), acquires communication record write information, 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 telephone communication between the telephone set 905-6 and the telephone set 905-8, the record “IA301, IA401, EA301, EA401, M255, M255 in the third row set in the device control table 910-3 (FIG. 52) is used. ,..., And the record “IA401, IA301, EA401, EA301, M255, M255,...” In the fourth row of the device control table 910-4 (FIG. 53) is used. 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, the wireless base station 902-4 is reached (step B68-2 to step B68-4). In the wireless base station 902-4, telephone voice is transmitted through the wireless communication path 917-6 in the form of wireless communication radio waves. The telephone 905-8 is reached (step B68-5). The analog voice sent from the telephone 905-8 is digitized, stored in an IP packet, and sent in the reverse direction (steps B69-1 to B69-5).
<< Wireless Communication Area Detection and Movement Preparation Procedure >>
When the mobile phone 905-6 (FIG. 31) moves and is located in the overlapping wireless communication area 205, the mobile phone 905-6z moves from the wireless base station 902-5 to the wireless base station via the wireless communication path 917-10. The radio base station identification symbol “BS902-5” of the station 902-5 and the identification symbol “GWE901-1” of the termination 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” is notified to the wireless base station 902-3 via the wireless communication path 917-5y (step B81, referred to as a handover request). The radio base station 902-3 forms an IP packet 225 (FIG. 65) including telephone numbers “TN3” and “TN4” and identification symbols “GWE901-1” and “BS902-5” to form a 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 IP-encapsulated to form an internal packet 226 (FIG. 66) and transferred to the proxy mobile telephone server 908-6 (step B83). The proxy mobile telephone server 908-6 227 (FIG. 67) is formed, and the internal packet 227 is transferred to the telephone management server 908-4 (step B84).

The telephone management server 908-4 receives the internal packet 227, extracts the transmission source telephone number “TN3”, the destination telephone number “TN4”, the identification symbols “GWE901-1” and “BS902-5”, and transmits the transmission source telephone number The CIC number “CIC-7” is formed from “TN3” and the destination telephone number “TN4”, and is “CIC-7” from the plurality of CIC management tables held in the telephone management server 908-4. A record in the CIC management table 908-4C (FIG. 57) is found, and its message type is rewritten to “CON”. Since it is a “handover request”, the telephone management server 908-4 next checks the server address table 211X (FIG. 38), and the identification symbols “GWE901-1” and “BS902-5” obtained from the IP packet 227. Records including the title part of the server address table 211X, the record “GWE901-1,
TES906-4, IA11, BS902-5, EA1, IA1, MBS906-6, IA41, EMB ”are known. Subsequently, the telephone management server 908-4 is determined by“ TES906-4 ”in the record. IP address “IA11” of telephone management server 906-4, address information of wireless base station 902-5 determined by identification symbol “BS902-5” (external IP address is “EA1”, internal IP address is “IA1”) and movement 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 the CIC number “CIC-7”, the transmission source telephone number “TN3”, the destination telephone number “TN4”, and the information “IA4, EA4, 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 are included. 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 classification of the CIC management table 906-4A is “CON” indicating handover and the start time “St6”.

The telephone management server 906-4 forms an internal IP packet 228 (FIG. 68) for requesting an external IP address and port number for setting a digital voice communication path set by the handover request. However, the address information (EA1, IA1, EMB, IA41) in the internal IP packet 228 is acquired in the above procedure. The telephone management server 906-4 transmits the internal IP packet 228 to the proxy mobile telephone server 906-6 (step B87), and the proxy mobile telephone server 906-6 forms an internal packet 229 (FIG. 69) from the internal packet 228. Network node device 906-1 (step B88), and network node device 906-1 decapsulates the received internal packet 229 to form an external packet 230 (FIG. 70). Station 902-5 (step B89), and upon receiving the request, the radio base station 902-5 assigns an external IP address and port number for the voice communication path, and holds the radio base station therein The allocation 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 an assignment result is formed and transmitted to the network node device 906-1 (step B91). . Using the device control table 910-1, the network node device 906-1 encapsulates the received external packet 231 to form 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 obtains the wireless line identification symbol “WC6”, the external address “EA101”, and the port number “5012” from the received internal packet 223, and the telephone management server 906-4 further receives the termination gateway address. The management table 211 (in FIG. 37) is rewritten as in the termination gateway address management table 211Z (in FIG. 37) to acquire the internal address “IA101”, and further acquire “UNI3” in the record corresponding to “IA101”. Then, “WC6, IA101, EA101, 5012, UNI3” obtained as described above is written into the CIC management table 906-4A (FIG. 62), and the result is as shown in the CIC management table 906-4B (FIG. 63).

Step B81 to Step B93 described above are included in the step range 230 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 mobile telephone 905-6 moves. It is obtained by referring to the existing CIC management table 908-4C.
<< Variation of Wireless Communication Area Detection and Movement Preparation Procedure >>
Variations of Step B81 to Step B93 can be implemented as Step B80x and Steps B101 to B105 described below. When the mobile telephone 905-6 moves and is located within a range where the wireless communication areas 203 and 205 overlap, the mobile telephone 905-6z identifies the terminating gateway 901-3 to which the wireless base station 902-3 is connected. Identification code “GWE901-3”, radio base station identification code “BS902-3” of radio base station 902-3, source telephone number “TN3” and destination telephone number “TN4”, Then, the wireless base station 902-5 is notified (step B80x). The radio base station 902-5 determines that the request is a handover request (step B100), and passes the obtained identification symbol “GWE901-3”, telephone numbers “TN3” and “TN4” via the network node device 906-1 (step B101). Further, the information is sent to the telephone management server 906-4 through the proxy mobile telephone server 906-6 (step B102) (step B103). Steps B100 to B103 are similar to steps B90 to B93. The telephone management server 906-4 acquires the identification symbol “GWE901-3”, telephone numbers “TN3” and “TN4” from the received internal packet, and the identification symbol “GWE901-3” and the telephone management server address table 211X. (FIG. 38) is used to obtain the address “IA13” of the telephone management server 908-4. Next, the telephone management server 906-4 makes a request for handover of the mobile telephone 905-6 (movement from the wireless communication area 203 to the wireless communication area 205) to the telephone management server 908-4, and the telephone. Number "TN3", "TN4"
The wireless base station 902-3 notifies the address related information “EA101, 5012, WC6” acquired using the wireless base station address management table 212X (step B104), and the telephone management server 908-4 receives 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) is transferred to the telephone management server 906-4 (step B105).

Step B100 to step B105 described above are included in the step range 231 in FIGS. 32 and 33. Following the completion of step B93 or step B105, the telephone management server 906-4 acquires “IA101, UNI3” using the termination gateway address management table 211 (in FIG. 37), and stores the server address table 211X (FIG. 38). To obtain the address information “EA1, IA1, IA41, EMB” and use the address “IA11” of the telephone management server 906-4 and the obtained various information “WC6, EA101, 5012” to obtain the CIC management table 906. -4B (FIG. 63) is formed. Note that all the telephone management servers in the IP network 900X have a server address table 211X. Here, the radio base station 902-3 uses the radio base station address management table including the external IP address “EA101”, the port number “5012”, and the radio channel identification symbol “WC6” that the mobile phone uses for individual voice communication. The point is that
<< Device control record setting instruction >>
The telephone management server 906-4 forms an internal packet 234 (FIG. 74) including the IP addresses “IA101, IA401, EA101, EA401”, and passes through the table management server 906-3 (step B112) to the network node device 906-1. The network node device 906-1 transfers the IP address information to the records “IA101, IA401, EA101, 3rd row of the device control table 910-1 (FIG. 54) inside 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 addresses “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). Upon confirmation of completion of Step B115 and Step B126 (Step B127), the mobile telephone 905-6 moves to the position of the mobile telephone 905-6y via the position of the mobile telephone 905-6z, and preparations for switching to continue telephone communication are made. Complete.
<< Start of switching action >>
Upon 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 (in 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 the radio base station 902 as an IP packet 238 (FIG. 78). 3 (step B133), and the switching instruction information reaches the mobile phone 915-6z via the wireless communication path 917-5y (in FIG. 31) (step B134). The telephone management server 908-4 writes the end time “St3e” after step B130 to stop the use of the CIC management table 908-4C (FIG. 57) used before this time, and CIC management obtained as a result. 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 a communication fee, and this is disclosed in Patent Document 2.

  The mobile telephone 915-6z returns a report to 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), it reaches the radio base station 902-5 as an IP packet 242 (FIG. 82) (step B143). Then, the mobile phone 915-6z is reached (step B144). The mobile phone 915-6z returns a switching 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 switching report. 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, similarly to the above, the telephone management server 906-4 forms an IP packet 245 (FIG. 85) including a handover switching instruction and sends it to the proxy mobile telephone server 909-4 (step B151). The telephone management server 909-4 Use of the CIC management table 909-4C (FIG. 61) created in step 126 (in FIG. 33) is started (step B152), and a CIC management table switching completion report is returned (step B153).

Next, the telephone management server 906-4 uses 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,... "Is instructed, and the IP packet 246 (FIG. 86) is formed and transmitted (step B154). Upon receiving the IP packet 246, the telephone management server 908-4 sends an IP packet including a capsule control record use end instruction to the network node device 908-1 via the table management server 908-3 (steps B157 and B158), and the telephone. The management server 908-4 sends an IP packet including use termination designation of the information “EA301, 5006, WC3” in the radio base station address management table 212 (FIG. 39) to the proxy mobile phone server 908-6, 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) reads out the capsule control record “IA401, The IP management server 909-4 receiving and receiving the IP packet 247 generates and transmits an IP packet 247 (FIG. 87) including an instruction to end use of IA301, EA401, EA301, M255, M255,. Then, the IP packet 247 including the capsule control record use end instruction is sent 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 reads internal address information (IA1, EA1, IA41, EMB, IA11, IA101, EA101) associated with the telephone number “TN3” from the internal record of the CIC management table 906-4B (FIG. 63). It takes out its own UNI value “UNI3”, forms an IP packet 248 (FIG. 88) including the telephone number “TN3” and the IP addresses “IA101, EA101, UNI3” and sends it to the telephone number server 996 dedicated to the mobile phone. (Step B163), the completion of rewriting according to the contents of the IP packet 248 is reported (Step B164). As a result, the record in the first line of the mobile telephone registration table 210 (FIG. 36) inside the telephone number server 996 is “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 result is the same as when the procedure for changing the position of the mobile telephone described later is performed.
<< Distribution of internal IP address as needed >>
The telephone management server 909-4 can request the mobile telephone dedicated telephone number server 996 to add an internal IP address, or return the distributed internal IP address to the telephone number server 996 (step B 165, option). Other telephone management servers can negotiate with the telephone number server 996 in the same manner as described above, and request additional distribution and return of internal IP addresses (optional).
<< Liberation Phase >>
The call release phase shown in steps B170 to B192c in FIG. 34 and FIG. 35 is substantially the same as the call connection control procedure (step B70 to step B92c in FIG. 6) of the IP network as the premise of the present invention. Outlined below.

  When the user of the telephone set 905-6y notifies the release of the telephone communication (step B170 in FIG. 34), the release notice is sent to the radio base station 902-5, the network node device 906-1, and the proxy mobile telephone server 906-6. Is notified to the telephone management server 906-4 (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 telephone communication release instruction to the proxy mobile telephone server 909. -6, and notifies the wireless base station 902-4 via the network node device 909-1 (steps B176 to B178). Furthermore, 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 radio base station 902-5 of a release instruction (Steps B185 to B187). The radio base station 902-5 can also notify the telephone set 905-6y of a disconnection instruction (step B170-1, option). On the other hand, the radio base station 902-4 notifies the telephone set 905-8 of a disconnection instruction (step B179) and notifies the telephone management server 909-4 of a release report (steps B181 to B183). The telephone set 905-8 can also transmit a disconnection instruction confirmation signal to the radio 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). 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 displayed. It is deleted (step B197). Similarly, the telephone management server 909-4 extracts the line number “CIC-7” in the IP packet 250 (FIG. 90) after step B176, and the corresponding communication record (device control in this case). Deletion of the record “IA401, IA101, EA401, EA101, M255, M255,...” In the second row of Table 910-4 (FIG. 53) is instructed (steps B198, B199).
<< Release Report Option and Radio Channel Disconnect >>
Hereinafter, a communication path releasing 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 path releasing procedure (steps B88a to B92c) shown in FIG. It is the same.
<< Handover of incoming mobile phone >>
In the above embodiment, the mobile telephone 905-6 makes a telephone call to the mobile telephone 905-8, that is, the mobile telephone 905-6 is the calling telephone and the mobile telephone 905-8 is the incoming telephone. In Step B80 (FIG. 32), the mobile phone 905-6 moves from the radio communication area 203 to the radio communication area 205, and a handover including switching of the radio base station to which the mobile telephone 905-6 connects occurs. That is, handover occurs due to movement of the calling telephone.

On the other hand, the communication procedure (steps B80 to B165) for carrying out the handover is not directly related to the communication procedure (steps B01 to B60-4) of the telephone call connection control between the calling phone and the called phone. The communication procedure from the mobile telephone 905-6 (calling telephone) and the communication procedure from the mobile telephone 905-8 (calling telephone) are in contrast. For this reason, handover by moving the incoming telephone is possible, 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. Moved to the position of the telephone 905-7 belonging to the wireless communication area of the wireless base station 902-1 (FIG. 1), and moved from the mobile telephone 905-6 to the mobile telephone 905-8y (mobile telephone moved to the position of the telephone 905-7) 905-8) and telephone communication can be continued. That is, the telephone communication is continued through the telephone communication path via the mobile telephone 905-6, the radio base station 902-3, the termination gateway 901-3, the termination gateway 901-2, the radio base station 902-1, and the mobile telephone 905-8y. it can. However, 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, a hand-over occurs due to the movement of the incoming telephone, and the telephone communication can be continued.
<< Variation to move to a radio base station connected to the same terminal gateway >>
92 to 95, the mobile telephone 905-6 makes a call to the mobile telephone 905-8 via the radio base station 902-3, the termination gateway 901-3, the termination gateway 901-4, and the radio base station 902-4. As a next step, the mobile telephone 905-6 moves from the wireless communication area 203 to the wireless communication area 202 (FIG. 31), and the mobile telephone 905-6w, the wireless base station 902-2, the termination gateway A communication procedure is shown in which telephone communication connecting the mobile telephone 905-8 can be continued via the terminal 901-3, the termination gateway 901-4, and the wireless base station 902-4. Here, the mobile telephone 905-6 w is the telephone 905-6 that has moved into the wireless communication range 202.

  92 and 93 show communication procedures in a form in which the communication range 901-1x involving the termination gateway 901-1 is excluded from FIGS. 32 and 33. Similarly, FIG. 94 and FIG. 95 show communication procedures in a form in which the communication range 901-1x involving the terminating gateway 901-1 is excluded from FIG. 34 and FIG. 92 and 93, Step K1 and Step K7 show the same function as Step K1 and Step K7 in FIG. 32 and FIG. 33, that is, the internal address delivery procedure from the telephone number server 996 dedicated to the mobile phone. . 92 and 93, steps B01 to B60-4 are the same 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 phone. The delivery procedure is shown. 92 and 93, step B68-1 to step B69-5 are the same functions as step B68-1 to step B69-5 in FIGS. 32 and 33, that is, mobile phone 905-6 and mobile phone 905-6. The telephone communication which transmits / receives the digital voice packet between is shown.

  92 and 95, in steps B80 to 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, The telephone communication path switching procedure (switching procedure 2), which is the termination gateway 901-3, termination gateway 901-4, radio base station 902-4, and mobile phone 905-8, is shown. On the other hand, in the switching procedure 1, that is, 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 telephones 905-6y, This is a procedure for switching telephone communication paths, which are the radio base station 902-5, the termination gateway 901-1, the termination gateway 901-4, the radio base station 902-4, and the 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 replaced with the mobile telephone 905-6w at the same time. Procedure 2 is obtained. Steps B86x, B120x, B151x, B164x, etc. shown in FIG. 92 to FIG. 95 perform the same functions as Steps B86, B120, B151, B164, etc. shown in FIG. 32 to FIG. The procedure inside 901-1 is replaced with the procedure inside termination gateway 901-3.

92 and 93, the communication procedure is the same as that after step B168-1 to step B169-5 and step B170. For the above reasons, handover occurs due to the movement of the incoming telephone, and telephone communication can be continued.
<< Mobile phone number registration >>
The 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 mobile telephone telephone number registration procedure shown in FIG. This is explained below.

The user 990-2 (in FIG. 1) who uses the mobile telephone 905-6 has the telephone number “TN3” used by the mobile telephone 905-6, the authentication information “PID3” of the mobile telephone 905-6, the user name and the communication fee. An application is made to the telephone receptionist 991-2 including the payment method (step V1), and the user service server 992-2 (in FIG. 1) (steps V2 and V3) is notified to the telephone number server (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 36). V5). In step V3, the user service server 992-2 holds the telephone number “TN3”, the authentication information “PID3”, the application user name, and the communication fee payment method in the database under the user service management. Of the records “TN3, IA3, EA3, IA43, EMB, IA13, IA301, EA301, UNI3, PID3” on the first line excluding the title part of the mobile telephone registration table 210, “TN3” and “PID3” are the above-described procedures. (Steps V1 to V5). A 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 identified, so that the communication fee is charged. .
<< Registering the initial position of the phone >>
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 receives the location registration information. Is transmitted to the radio base station 902-3 (step V11). The location registration information includes a telephone number “TN3” and authentication information “PID3”. The radio base station 902-3 forms an external IP packet 271 (FIG. 98) including location registration information, and transmits it to the network node device 908-1 (step V12). The external IP packet 271 includes an external IP address “EA301” acquired with reference to the radio base station address management table 212 (FIG. 39), the acquired telephone number “TN3”, authentication information “PID3”, and the radio base station 902- 3 identification symbols “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, 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 telephone 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” “IA301” and UNI (user network interface) “UNI3” are acquired, and the telephone number “TN3”, various IP addresses (IA3, EA3, IA43, EMB, IA13, IA301, EA301), “UNI3”, ““ Forms IP packet 274 (FIG. 101) containing PID3 ″ And transmits it to the telephone number server 996 (step V15). Here, the telephone management server 908-4 adds the address “IA13”.

The telephone number server 996 receives the internal packet 274, and the telephone number server 996 receives the telephone number “TN3” and the authentication information “PID3” held in the telephone number registration step V7 and the telephone number “0” acquired in step V15. TN3 ”and authentication information“ PID3 ”are compared to determine whether the terminal authentication result is acceptable or not (step V16). If it passes, external IP address “EA301”, telephone number “TN3” and authentication information “PID3” are written in the record of mobile telephone registration table 210 (FIG. 36). As a result, the records “TN3, IA3, EA3, IA43, EMB, IA13, IA301, EA301, UNI3,“ PID3 ”on the first line excluding the title part of the mobile telephone registration table 210 (FIG. 36) are obtained. The authentication result is reported to the mobile telephone 905-6 in the reverse direction (step V17 to step V21).
<< Mobile phone position change >>
In a state where the procedure for registering the initial position of the mobile telephone is completed, the mobile telephone 905-6 can change its location and register the position of the new mobile telephone. The mobile telephone having the telephone number “TN8” has completed the initial location registration procedure. The mobile telephone registration table (FIG. 36) in the third telephone line server 996 dedicated to the mobile telephone (FIG. 36) records “TN8, IA8, In this case, EA8, IA48, EMB, IA18, IA801, EA801, UNI8, PID8 ". The case where the mobile phone (phone number “TN8”) changes its position to the phone 905-5 (in FIG. 1) will be described with reference to FIG.
The mobile telephone 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 telephone 905-5 transmits the position change information to the radio base station. A call is sent to 902-2 (step V11x). The location change information includes a telephone number “TN8” and authentication information “PID8”. The radio base station 902-2 forms the 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 phone 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). 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 records “TN8, IA8, EA8, IA48, EMB, IA18, IA851, EA801, UNI8, PID8” in the third row of the mobile telephone registration table 210 (FIG. 36) are It is rewritten as in the mobile telephone registration table 210X (FIG. 89) (step 16x). Here, the rewriting to the internal IP address “IA851” is designated to be changed by the internal IP address “IA851” in the IP packet 276.
<< Root phone number server >>
Another method for carrying out 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 963-5 are termination gateways, 263-1 to 263 -3 is a relay gateway, 264-1 to 254-3 are mobile telephones, 265-1 to 265-3 are fixed telephones, 996-1 to 996-3 are dedicated telephone number servers, and 996-4 is 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 termination gateways 262-1 to 262-5 are configured to include a server similar to the termination 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 Document 2 as relay gateways that connect IP networks with IP communication lines. 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 telephones are provided inside the IP networks 259-1 to 259-3, respectively. A process of replying the IP address from the number is performed. The route telephone number server 996-4 can transmit and receive IP packets with the telephone number servers 996-1 to 996-3 and perform processing such as replying an IP address from the telephone number. It is the same as that figure. For example, an answer can be obtained by inquiring about the IP address corresponding to the telephone number “TN30” managed by the telephone number server 996-2 from the telephone number server 996-1 via the route telephone number server 996-4. (FIGS. 105 and 106).
<< Summary of telephone number servers dedicated to multiple mobile phones >>
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 can be directly connected to each other via IP communication lines or other IP networks. An IP network Nm includes a telephone number server Nm dedicated to a mobile telephone, and a 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 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 root telephone management dedicated to the plurality of mobile telephones. While using the server, the mobile phone 1 is in communication with the mobile phone 1-the radio base station 3-the IP network Nm-the IP network Nn-the radio base station 2-the mobile phone 2 or the fixed phone 2 via the communication path. Move within the radio communication area 3 of the radio base station and continue telephone communication with the mobile telephone 1 -radio base station 3 -IP network Nm -IP network Nn -radio base station 2 -mobile telephone 2 or fixed telephone 2 (Handover) is possible.
<< Telephone 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 shows the call connection control procedure in which the telephone 905-1 (FIG. 1) is the caller, and is the same as the communication procedure in the left half of FIG. Further, the communication procedure in the right half of FIG. 107 shows 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. Thus, 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.

When a telephone call is made from the fixed telephone 905-1 to the mobile telephone 905-8, the mobile telephone 905-8 moves to the position of the telephone 905-7 (FIG. 1) belonging to the radio communication area of the radio base station 902-1. The telephone communication can be continued 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, the telephone communication can be continued through the telephone communication path via the fixed telephone 905-1, the media router 903-1, the termination gateway 901-1, the termination gateway 901-2, the radio base station 902-1, and the mobile telephone 905-8y. . However, 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 the telephone communication between the fixed telephone and the mobile telephone, a handover occurs due to the movement of the called mobile telephone, and the 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 a caller telephone, the fixed telephone 905-4 is a callee telephone, and the mobile telephone 905-6 moves from the wireless communication area 203 (FIG. 31) to the wireless communication area 205 ( A communication procedure (hereinafter referred to as a communication procedure 108) for a case of handover) is described. On the other hand, in FIGS. 32 to 35, the mobile telephone 905-6 is a calling telephone, the mobile telephone 905-8 is a receiving telephone, and the mobile telephone 905-6 moves from the wireless communication area 203 (FIG. 31) to the wireless communication area 205. A communication procedure (hereinafter referred to as communication procedure 32) for the moving case is described. In the communication procedure 32, the incoming side 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.

Corresponding to the change to the fixed telephone, the first difference in the communication procedure shown in FIGS. 108 to 111 is that the telephone management server 908-4 searches for telephone numbers in steps B07, B08, B07y, B08y (FIG. 108 and FIG. 109) and steps B07x and B08x (FIGS. 32 and 33) for searching for telephone numbers. 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 (required for the mobile telephone) Steps B26, B27a to B28d, B204 to B206, B190a to B192c, etc.) in FIG. 33 are omitted. Other communication procedures other than the above are not changed, and the essence of the call connection control is not changed. Thus, 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 the telephone communication between the fixed telephone and the mobile telephone, a handover occurs due to the movement of the called mobile telephone, and the telephone communication can be continued.
<< Handover of mobile phone calling a fixed terminal >>
FIG. 108, FIG. 109, FIG. 110, and FIG. 111 show an example of handover in which the fixed telephone 905-4 and the mobile telephone 905-6 (FIG. 31) in communication move from the position 905-6 to the position 905-6y. As described above. Hereinafter, an example in which the fixed telephone 905-4 (FIG. 31) is switched to the IP terminal 905-17 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, the difference between them is 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”, “B69-1” are replaced with steps “A25x”, “A40x”, “A50x”, “A60x” related to the IP terminal 905-17 shown in FIG. "," B68-5x "," B69-1x ". Furthermore, since FIG. 111 and FIG. 113 are similar, the difference between them is confirmed. The fixed telephone 905-4 shown in FIG. 111 is switched to the IP terminal 905-17 in FIG. 113, and the steps “B168-5”, “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. Yes.

  Since this is the case, the IP terminal 905-17 executes the steps "A25x", "A40x", "A50x", "A60x", "B68-5x", "B69-1x", and further "B168" −5x ”,“ B169-1x ”,“ A179x ”,“ A180x ”allows the mobile telephone 905-6 to perform handover due to movement of the mobile telephone 905-6 in the telephone communication from the mobile telephone 905-6 to the IP terminal 905-17. It can be explained that telephone communication can be continued even when it occurs. The fact that the mobile phone 905-6 can be handed over from the position 905-6 (FIG. 31) to 905-6y is described above with reference to FIGS. 108, 109, 110 and 111. The communication procedure described in is used 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 telephone 905-6. is there. That is, the IP terminal 905-17 can function as a data providing server that provides 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 positions of telephones, wireless terminals, and voice image apparatuses connected to the IP network, and the telephone management server is used to change the geographical positions of telephones. A series of call connection control procedures is performed. The IP network can perform inter-mobile telephone communication between the mobile telephone 1 and the mobile telephone 2, and telephone communication via the IP network between the mobile telephone and the fixed telephone or the IP terminal. Can perform handover communication in which telephone communication is continued by changing at least a radio base station during telephone communication. When the handover is performed, the internal address, which is the location information of the telephone after movement, is rewritten as a record in the mobile telephone registration table in the telephone number server dedicated to the mobile telephone.

  The mobile phone 1 within the radio communication area 1 of the radio base station 1 is connected to the terminal 2 via the mobile phone 1-radio base station 1-terminal gateway 1-terminal gateway 2-radio base station 2-terminal 2. While continuing the telephone communication (however, 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 termination gateway 3; In other words, a method (handover technique) for continuing communication with the terminal 2 via the mobile telephone 1-radio base station 3-terminal gateway 3-terminal gateway 2-radio base station 2-terminal 2 is solved. When performing a handover, the mobile telephone 1 can be either a calling telephone that calls the other terminal 2 or a called telephone that is called from the other terminal 2.

  Further, the mobile phone 1 within the radio communication area 1 of the radio base station 1 passes through the mobile phone 1 -the radio base station 1 -the terminal gateway 1 -the terminal gateway 2 -the radio base station 2 -the terminal 2 and the terminal 2, the mobile phone 1 moves to a geographical location where the mobile phone 1 communicates with the radio base station 2, i.e., the mobile phone 1. 1) Radio base station 2—Termination gateway 1—Termination gateway 2—Radio base station 2—A method for continuing communication with terminal 2 via terminal 2 is solved.

A CIC management table including items for recording 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. In addition, the initial value of the CIC management table that is newly used by the mobile telephone after the movement is obtained with reference to the CIC management table used by the mobile telephone before the movement. The radio base station uses a radio base station address management table including at least an external IP address, a port number, and a radio channel identification symbol used for voice communication. A server address table including address information of the telephone management server, the radio 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 termination gateway address management table, records the internal IP address used to encapsulate the external packet for voice communication in the termination gateway address management table, and is using the internal IP address And are managed separately when not in use. 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 calling telephone or the called telephone.
<< Relationship with Patent Literature >>
The IP network includes two or more termination gateways, and the termination gateway includes a network node device. The external IP packet is converted into an internal packet at the ingress network node device and transferred through the IP network, and the internal network at 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 is capable of both mobile telephone communication and mobile telephone communication. 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 for setting and releasing a communication record 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 in response to a request from a user is stored inside 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 refusal function is added.

114, 300 is an IP network, 301 to 303 are termination gateways, 304 to 307 are LANs, 308 and 309 are network node devices, 310 and 311 are termination control units, 312 and 313 are path setting servers, 314 and 315 are Table management server, 316 and 317 are path management servers, 318 and 319 are domain name servers, 321 is reception, 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. Information can be exchanged by sending 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). Reference numeral 336 denotes a logical terminal to which the 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 the 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 voice image transmitting devices (or video image transmitters, receivers, and fax terminals) that can send and receive voice and image data by digitization, or telephones that can send and receive voice by digitizing. . The audio image sending device may be a still image or a moving image. In the case of moving images, the terminals 327 and 328 are TV transmitters that transmit digitized audio and moving images, or TV receivers that receive audio and moving images.
<< 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 the execution of 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 unified within the IP network 300, and this 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 terminal logical terminal 336 of the communication line 334 connected to the terminal 327 (step S4). The open connection server 323 includes, in the domain name server 318, a set of a terminal location identifier “URL1” related to the terminal 327, an external IP address “EA1”, and an internal IP address “IA1”. An instruction to hold is given (step S5).

  Next, the open connection server 323 instructs the communication record “IA1, IA81, EA1, EA8, MK, MK” to be set in the capsule control table 330 in the network node device 308 via the table management server 314. (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 to IP-encapsulate an IP packet related to setting and release of a path sent from the terminal 327, and details will be described later. According to the same procedure, the user terminal 328 (external IP address is “EA2”) is registered in the domain name server 319, and the records “IA2, IA82, EA2, EA8, MK, MK "is set.

The terminal 328 is given a terminal location identifier “URL2”. The terminal location identifiers “URL1” and “URL2” are disclosed 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. As the terminal location identifier, a universal resource location identifier (URL: Universal Resource Locator) naming rule can be adopted.
<< 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 for setting a communication path connecting logical terminals 336 and 337 by setting communication records in the device control tables 330 and 331 and a method for releasing the communication path will be described with reference to FIG.

  The terminal 327 sends 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) reaches 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 to encapsulate. Into an internal packet 341 (FIG. 118). The internal packet 341 reaches the path setting server 312 (step U3), where it is converted into the 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 a reply packet 344 ( 121) is received (step U6). The reply packet 344 includes addresses “EA1, IA1” corresponding to “URL1” and addresses “EA2, IA2” corresponding to “URL2”. Note that the domain name server 318 can also inquire higher-level 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.

  When the path management server 317 receives the packet 345, the path management server 317 checks the path setting rejection table 346 (FIG. 123) held in the path management server 317, and the terminal having “URL2” communicates with the terminal using “URL1”. It is checked whether or not the setting of the path used for the communication is 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 terminals “URL1” and “URL2”, addresses “IA1, IA2, EA1, and“ URL1 ”and“ URL2 ”are associated with each other. An internal packet 348 (FIG. 125) including the setting contents is sent to the table management server 314 so that the 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 path setting (steps U12 to U15). In this way, the record “IA1, IA2, EA1, EA2, MK, MK” on the second line of the device control table 330 (FIG. 114) is set. Further, the path management server 317 instructs the table management server 315 to set the communication record in the network node device 309 (steps U10-2 and U11-2). Similarly, the path management server 317 notifies the terminal 328 of the communication path setting (steps U12-2 to U15-2). In this way, the record “IA2, IA1, EA2, EA1, MK, MK” on the second line of the device control table 331 (FIG. 114) is set. With the above procedure, setting of a communication path connecting the logical terminal 336 and the logical terminal 337 is completed, and transmission / reception of IP packets between the terminal 327 and the terminal 328 becomes possible.

  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, V2), packet 349 is encapsulated using communication records “IA1, IA2, EA1, EA2, MK, MK” on the second line excluding the title section in the set device control table 330 Thus, the internal packet 350 (FIG. 127) is transferred, and the internal packet 350 is transferred through the IP network 300 to reach the network node device 309 (step V3). In the network node device 309, the internal packet 350 to the packet 349 (FIG. 126) are obtained. ) Is restored, via the communication line 335, via the media router 333 (step V4), the terminal To reach the 28 mentioned setting contents (Step V5). Communication in the opposite direction, that is, an IP packet sent from the terminal 328 reaches the terminal 327 via the media router 333, the network node device 309, 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” on 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. It has been. The confirmation of the transmission source address “EA1” is useful for confirming the identity of the transmission source terminal and for collecting (charging) a communication fee.

  The procedure for releasing the communication path connecting the set logic terminals 336 and 337 is as follows. The terminal 327 sends 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 includes the media router 332 and the network node device 308. The path management server 316 is reached via the path setting server 312 (steps U21 to U23). The path management server 316 sends a network node via the table management server 314 so as to delete the record “IA1, IA2, EA1, EA2, MK, MK” on the set second line in the device control table 330. The device 308 is notified (steps U25 and U26), and the terminal 327 is notified of the completion of the set communication path release (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 path management server 317 of the packet 352 (step U24). . The path management server 317 instructs to delete the record “IA2, IA1, EA2, EA1, MK, MK” in the set second row in the device control table 331 (steps U25-2, U26-2). The terminal 328 is notified of the completion of releasing the set communication path (steps U27-2 to U30-2).
<< Communication path setting rejection registration procedure >>
When the terminal 328 stores and transmits the terminal location identifier “URL12” of the communication partner whose path setting is to be rejected in the packet 353 (FIG. 130), the path setting rejection request is sent to the media router 333, the network node device 309, the path setting server. The path management server 317 is reached via 313 (steps U31 to U34). The path management server 317 writes the request content in the path setting rejection table 346 (FIG. 123) held in the path management server 317 (step U35). The first line excluding the title part of the path setting rejection table 346 (FIG. 123) shows that the terminal having “URL2” sets the path between the terminal having “URL8” and the terminal having “URL12”. Indicates rejection. Similarly, a packet including a path setting refusal request can be transmitted from the terminal 327 side and written in the communication path setting refusal table held in the path management server 316 (steps U41 to U45).
<< Other methods for determining communication path settings >>
Another method for determining the communication path setting will be described. FIG. 131 shows an example of assigning terminal location identifiers in a tree structure, where 354-1 is a root domain, and the name of the domain 354-1 is “root”. Domain 354-1 has three domains under it, namely domains "aa", "bb" and "cc", and domain "aa" has domains "pp", "qq" and "rr" under it. The domain “bb” has the domains “ss” and “tt” under the domain “bb”, the domain “pp” has the hosts “H1” and “H2” under the domain “pp”, and so on.

  The hosts “H1”, “H2”... Are terminals or computers, for example, 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. If an upper domain is specified, all lower domains and hosts are specified.

  FIG. 132 shows another step performed instead of step U8 (FIG. 116) for setting the communication path, 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, the destination terminal “URL2” indicates that the terminal location identifier (“H1.pp.aa.root” in this case) of the source terminal satisfies the condition that the domain “aa.root” is included in the source terminal. This means that the setting of the communication path is permitted with the other terminal. In this case, “H1.pp.aa.root” is included in the domain “aa.root”.

The path management server 317 determines that the 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). Note that 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) is “URL9,“ all ”.
“Allowed” and 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 communication path setting is not rejected, preparation for setting the communication record is made. If it is determined that the communication path setting is not permitted (steps 354-12 and 354-14), the communication record is not set (step 354-16).
<< Connection between multiple IP networks and DNS >>
FIG. 134 shows the hierarchical structure of the domain name servers. Domain name servers 325, 356, and 357 are located below the domain name server 355 serving as the root. The domain name servers 318 and 319 (FIG. 114) are positioned below the domain name server 325. FIG. 135 shows a state in which the IP networks 300, 300-1, and 300-2 are connected by communication lines. The IP network 300 includes a domain name server 325, and the IP network 300-1 includes a domain name server 356. In addition, the IP network 300-2 includes a domain name server 355 serving as a route, and the IP network 300-1 further includes a domain name server 355 serving as a route. In this way, information exchange between domain name servers can be performed as shown in steps U5-1 to U5-4 (FIG. 116).
<< Variation in which internal packet does not include source address >>
A variation will be described in which the internal packet includes an internal destination address but does not include an internal source address. The communication network 300X (FIG. 136) has substantially the same structure as the IP network 300 (FIG. 114). The internal packet 350X (FIG. 136) is an MPLS (Multi
Protocol Label Switching) frame. This 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 the network node device 308X, and the network node device 309 is the network node device 309X. The external packet 349 is input from the logical terminal 336X at the end of the communication line 334 to the network node device 308X, converted into the 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 the external packet 349-2, and sent to the communication line 335 via the logic terminal 337X. The termination gateway 301X (FIG. 136) has substantially the same structure as the termination gateway 301 (FIG. 114). The difference is that it does not include the network node device 308 but instead includes the network node device 308X. The termination gateway 302X is the same as described above, and does not include the network node device 309 but includes the network node device 309X. Although the inside of the communication network 300X is different from the inside of the IP network 300, 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. Since this is the case, it is possible to dynamically set and release a communication path for communication between two terminals by registering a terminal in the communication network 300X and setting and releasing a communication record. A path setting refusal 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, 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 that can restore IP packets can also be used.
<< Internal packet is the same variation as external packet >>
The communication network 300Y (FIG. 137) has substantially the same structure as the IP network 300 (FIG. 114), but is greatly different in 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 record formats of the device control tables 330 and 331 are changed to device control tables 330Y and 331Y, respectively. The external packet 349 transferred through the communication line 334 is input to the network node device 308Y from the logical terminal 336Y (identification name “ID1”), and the address (source address “EA1”, destination address “EA2” in the external packet 349). ) Is registered in the device control table 330Y.

  In this case, the record “ID1, EA1, EA2” in the second row of the device control table 330Y matches the address included in the record with the external packet (address match), so the external packet 349 remains the internal packet. 350Y. If 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”). To the communication line 335.

  In this variation, the domain name server includes the terminal 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 to which the external packet is input, 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 that of the external packet, but the procedure for registering the terminal in the communication network 300Y and permitting the communication path setting and rejecting the communication path setting for communication between the two terminals is performed. In addition, the communication path 300Y can be dynamically set and released, and a communication network 300Y for setting and releasing a communication record according to a request from a user can be implemented.

In this variation, the record of the device control table can be changed to “ID1, EA1”, and only the transmission source address “EA1” can be confirmed without including the destination address “EA2”. The transmission source address “EA1” confirmation is useful for confirming the identity of the transmission source terminal and for collecting (charging) a communication fee. Furthermore, the mask technique shown by the equation (1) as a conventional technique can be introduced into the record of the apparatus control table.
<< Specifying port number >>
In this embodiment, the terminal 327 and the terminal 328 can transmit and receive TCP packets and UDP packets, and do not permit other packet transmission and reception. That is, it is possible to permit only TCP and UDP to be specified for the upper layer protocol of the IP packet. The port number may be a value determined in advance as a rule inside the IP network. The terminal 328 determines that the port number value can be received and returned only in any of the cases 20 and 21 (FTP), 25 (SMTP), 80 (HTTP), and 4000. Here, the port number “4000” is a value that is determined and used as a port number unique to the data exchange service using the public URL of this embodiment. Use of port number 23 (Telnet) or other port numbers is prohibited to prevent unauthorized access from a communication partner. The designation of the upper protocol and the designation of the port number can be carried out by using the network node device function (protocol filter, port filter) disclosed in Example 7 of Patent Document 2. In other words, the record of the device control table in the network node device can be implemented by selecting a specific protocol or selecting a specific port number.
<< Delivery of content data to multiple terminals >>
In FIG. 138, 300-5 is an IP network, 301-10 to 301-12 are termination gateways, 400 to 404 are terminals having an IP packet transmission / reception function, and 405 is 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 is omitted. The terminals 400 to 404 have individual terminal location identifiers (URLs) and IP addresses for identifying the respective terminals, 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 one of the domain name servers in the termination 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 termination gateway server can be called from the domain name server 405. The terminal 400 and the terminal 401 set the communication path between the terminal 400 and the terminal 401 by the method described above in the present embodiment, the terminal 400 and the terminal 402 set the communication path of both terminals, The same applies hereinafter, and the terminal 400 and the terminal 404 set a communication path between both terminals.

  Thus, 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). The terminal 400 securely transmits an IP packet to the terminal 402 and receives the reception confirmation of the IP packet (step 407). The same applies to the following. The terminal 400 transmits the IP packet to the terminal 404 without fail and transmits the IP packet. 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 terminal 400 side, it is easy to confirm the identity of the terminal, and thus the charged content data is surely charged. Furthermore, since access from a terminal for which a communication path is not 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 explanation material, or the like. In addition, data transmission / reception between terminals such that the terminal 400 transmits a test question and the terminal 401 answers a test, such as distance learning, is also possible. The terminal 400 can also refuse to transmit content data by rejecting the setting of a communication path with an undesired terminal. These terminals are installed inside the LAN. The LAN can be not only a corporate LAN, but also a home LAN (information 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 deliver 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, so that the charged content data can be ensured, and further registered in the IP network. Access from a terminal that has not been set up or a communication path that has not been set up can be eliminated, and communication with high information security can be ensured.
<< Public server >>
In FIG. 140, 300-6 is an IP network, 301-20 to 301-22 are termination gateways, 410 to 414 are terminals having an IP packet transmission / reception function, and 415 is 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. For example, the terminal 410 is a WWW server including a data providing function, and executes a specialized program or the like. It is an ASP server, and is a data storage server that holds data of the terminal on the use side. The IP network 300-6 includes various servers described in the present embodiment, for example, a path setting server, an open connection server, etc., but is omitted. The terminals 410 to 414 have individual URLs and IP addresses for identifying the respective terminals, and the terminals 410 to 414 are registered in the IP network 300-6. Accordingly, the URL of each terminal in the IP network can be called from the domain name server 415.

  The terminal 411 sets a communication path with the terminal 410 by the method described in the present embodiment, and then the terminal 411 accesses the contents of the home page provided by the terminal 410 and collects the contents. (Step 416 of FIG. 141). The terminal 412 establishes a communication path with the terminal 410, and the terminal 412 can then access the contents of the home page provided by the terminal 410 and collect the contents (step 417). The same applies to the following. The terminal 414 establishes a communication path with the terminal 410, and then the terminal 414 can access the 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 rejecting the setting of the communication path with the terminal that is not desired by using the communication path setting rejection function described in the present embodiment. You can also. The specialized programs provided by the terminal 410 include, for example, an architectural design program (for an architectural design office), a product purchase management program (for a convenience store that requires purchase management in consideration of the weather and seasons), a hotel management program (a hotel front desk) For 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 protects the secret on the using terminal side.

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 (where j = 1, 2,..., N), and an ASP service using the communication path is implemented. As an ASP service, at least a specialized program can be executed and data can be stored. In the case of the WWW server, a communication path is set between the WWW server and the terminal-j (where j = 1, 2,..., N), and an information providing service using the WWW server using the communication path is performed. To do.
<< Summary >>
The technique of the embodiment is summarized as follows. Here, the terminal 327 (FIG. 114) of this embodiment is represented as a terminal “m”, and the terminal 328 is represented as a terminal “n”. The user terminal “m” is connected to the IP network via the communication line, the internal address “IA-m” is given to the logical terminal at the end of the communication line, and the terminal of the user “m” is the terminal location identifier. “URL-m” is assigned and the external address “EA-m” is used. Registration of the terminal information to the IP network is information about a user terminal “m”, that is, a set of a terminal location identifier “URL-m”, an external address “EA-m”, and an internal address “IA-m”. It is to be kept inside the domain name server inside the network. A communication path through which an IP packet between the terminal “m” and the terminal “n” is transferred is referred to as a communication path (or path) connecting the terminal “m” and the terminal “n”. The communication record “IA-m, IA-n, EA-m, EA-n, MK, MK” is set in the network node device on the terminal “m” side, and is 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 a path setting request packet including “URL-m” and “URL-n”, the path setting rejection table inside the IP network is checked to set the communication path. Is permitted, a communication path connecting the terminal “m” and the terminal “n” is set. However, in the case where the setting of the communication path is not permitted in the path setting rejection table, the communication path is not set.

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

  Between any terminals connected to the IP network, the communication path setting between the two terminals is permitted and the communication path setting can be rejected. For this reason, the terminal address related information is registered in the IP network server, and the permission to set the communication path between the two terminals is determined by using the registration information in the server. A terminal location identifier of the terminal, an external address, and an internal address for connecting the terminal to the IP network are registered in a domain name server in the IP network. The terminal location 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, the communication record 1 is set in the network node device 1 on the terminal 1 side, and the terminal 2 The 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, the set communication record 1 and communication record 2 are deleted in response to a request from the terminal 1 or the terminal 2. 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 is like that.

  In addition, by registering a domain name range to be permitted to set a communication path in a 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 using the set communication path. The terminal is a voice image transmission device (video image transmitter, receiver, fax terminal), digital telephone, TV transmitter, TV receiver capable of digitizing and transmitting voice and image data. The IP network can be used as a content distribution network (CDN), for example. Since the individual URL and IP address of the terminal are registered in the IP network, the identities of the two terminals that set the communication path are clear, and communication paths from terminals that are not registered in the IP network are not set. Communication with high security can be ensured. In this embodiment, both the external packet and the internal packet can be either IPV4 or IPV6, and the internal packet can be implemented by a frame less than three layers of communication, for example, by a MAC frame including a destination address and a source address. As an example, it can be implemented as an MPLS frame or an optical frame that includes a destination address but does not include a source address.

4). Fourth Embodiment for Registering Terminal Address in IP Network FIG. 133 shows an IP network 2000, and 2001 to 2005 are sub-IP networks in the IP network 2000, and are connected directly or indirectly 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. 2011 is an address inspection module in the communication line connection unit 2007, and 2012 is a router. Note that 2012 may be a switch having an IP packet transfer function. The communication line connection units 2007 to 1010 have a function of connecting the IP network and the LAN in the same way as the network node device 2 (FIG. 135). However, unlike the network node device 2, the communication line connection units 2007 to 1010 add an IP header to the external IP packet. It does not include an IP encapsulation function that forms internal IP packets.

  Reference numerals 2015 to 2019 denote LANs, which are connected to any of the sub IP networks in the IP network 2000 via communication lines. The LANs 2015 to 2019 include terminals 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 is not assigned, and can transmit an IP packet including a numerical value “x” generated as appropriate as a source IP address. The terminal 2025 is assigned an IP address “B”. The address inspection module 2011 includes IP addresses “A1” and “A2” of the terminals 2020 and 2021 in the LAN 2015 connected from the communication line connection unit 2007 via the communication line 2027, and terminals connected via the communication line 2028. Each IP address “B” of 2025 is held inside. It is also said that IP addresses “A1”, “A2”, and “B” are registered in the address inspection module 2011 in the communication line connection unit 2001 instead of “holding”. The address checking module 2011 can be implemented as a device or a server.

  The address inspection module 2011 has a function of inspecting a source IP address in an IP packet input from the communication lines 2027 and 2028 and discarding an IP packet that fails the inspection. Reference numeral 2013 denotes a MIB (message information base) included in the communication line connection unit 2007, which records, for example, IP packet discard information. 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 checking 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 an 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” 2031 is included in the address checking 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. Even when an IP packet 2032 having a source IP address “P” and a destination IP address “C” is sent 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 such as the discard time and the header value (including the IP address value) in the IP packet (optional). Note that the IP packet discard information in the MIB 2013 can be used as information for operation management of the sub IP network 2001.

  When an IP packet 2033 having a source IP address “B” and a destination IP address “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 inspection 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 sent IP packet returns to the router 2012 and reaches the terminal 2021 having the IP address “A2” via the communication line connection unit 2007.

Other methods of address inspection 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 “ When the source IP address of the IP packet input to the communication line connection unit 2007 from the LAN 2015 via the communication line 2027 is expressed as S, it is checked whether or not the following equation (2) is satisfied.

N = (S AND M) (2)

When the formula (2) is established, it can be considered that the IP address of the terminal in the LAN 2015 is held in the address inspection module. Here, “AND” in the expression (2) represents a logical product operation corresponding to 1 bit.

It is also possible to replace the router 2012 with an MPLS edge router, which will be described with reference to FIG. 2100 is an MPLS edge router, 2101 is an MPLS control table, and includes a plurality of records (rows). 2102 and 2103 are communication lines to which IP packets are transferred, and 2104 and 2105 are communication lines to which MPLS frames are transferred. When an IP packet IP packet 2106 having a source IP address “X” and a destination IP address “Y” is input to the MPLS edge router 2100 from the communication line 2102 identified by the line identifier “IN # 1”, the MPLS control table is displayed. It is checked whether or not the relationship of the following equation (2) is established for the record including the line identifier “IN # 1” 2101.

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 targeted, and the above equation (3) Therefore, the MPLS frame 2108 is formed by using the VPN identifier “V # 1” for identifying the VPN (virtual private network) and the MPLS label “L # 1” set in the header of the MPLS frame. The formed MPLS frame 2108 is transmitted to the communication line 2104 identified by the line identifier “OUT # 1”. The same applies to the case where the IP packet 2107 having the source IP address “X” and the destination IP address “Z” is input to the MPLS edge router 2100 from the communication line 2102 identified by the line identifier “IN # 1”. The MPLS frame 2109 is formed by using the record in the second row of the MPLS control table 2101 and sent to the communication line 2105 identified by the line identifier “OUT # 2”. The form of the MPLS control table 2101 can be changed. For example, M # 1 and N # 1 are not used, and the record in the first row is changed to “IN # 1, V # 1, L # 1, OUT”. It is also possible to change 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.

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

  As described above, it is possible to prevent a situation in which unnecessary IP packets overflow inside the IP network 2000 and interfere with normal communication, and communication between terminals registered with IP addresses can be smoothly performed. Further, it is possible to prevent an IP packet in which the source IP address is not registered in the IP network or an IP packet in which the source IP address is concealed from flowing into the IP network. DOS attacks that send garbage IP packets to the network can be reduced.

For example, the sub IP networks 2001 to 2005 can be 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 the communication line connection unit of the IP network via the communication line, the IP address of the terminal is registered in the communication line connection unit of the IP network, the communication line connection unit receives the IP packet, and the communication When the line connection unit detects an IP packet including an unregistered IP address as a source address, discarding the IP packet can prevent unnecessary IP packets from being input to the IP network and the sub-IP network. With the above procedure, it is possible to prevent a situation in which unnecessary IP packets overflow inside the IP network and prevent normal communication, and communication between terminals registered with IP addresses can be smoothly performed.

  The present invention enables a terminal connected to an IP network and a wireless LAN to communicate with another terminal by connecting to the IP network, and a mobile telephone or a voice image device connected to the IP network moves in its geographical position. However, it continues through the IP network, and a communication path is set between any terminals that have registered address information based on user requests, so that a large amount of illegal IP packets are prevented from flowing into the IP network. It is extremely effective for connection control of communication between terminals using an IP network.

FIG. 2 is a block configuration diagram for explaining a technique for performing fixed telephone communication, mobile telephone communication, and multimedia communication using an IP network as a premise of the present invention. It is a figure for demonstrating the method to implement communication from a fixed telephone to a fixed telephone in the communication case 1 of the IP network used as the premise of this invention. It is a figure for demonstrating the registration procedure of a fixed telephone in the communication case 1 of the IP network used as the premise of this invention. It is a figure for demonstrating the information exchange between telephone number servers in the communication case 1 of the IP network used as the premise of this invention. FIG. 2 is a part of a diagram for explaining a method for performing communication from a mobile telephone to a mobile telephone in the communication case 2 of the IP network which is the premise of the present invention. FIG. 2 is a part of a diagram for explaining a method for performing communication from a mobile telephone to a mobile telephone in the communication case 2 of the IP network which is the premise of the present invention. It is a figure for demonstrating the registration procedure of a mobile telephone in the communication case 2 of the IP network used as the premise of this invention. It is a figure for demonstrating the other position change procedure of a mobile telephone in the communication case 2 of the IP network used as the premise of this invention. It is a figure for demonstrating the method of implementing the communication from a mobile telephone to a fixed telephone in an IP network in the communication case 3 of the IP network used as the premise of this invention. It is the figure which quoted FIG. 168 of patent document 2 used as the premise of this invention, and is a figure which shows the relationship between a mobile telephone and a wireless base station in communication cases 2 thru | or 4. FIG. 17 is a diagram quoting FIG. 171 of Patent Document 2 which is a premise of the present invention, and is a diagram showing a state in which an IP packet including control or voice transmitted from an IP mobile phone is transferred via a wireless base station. . It is a figure which shows the other communication connection procedure from an IP terminal to another IP terminal in the communication case 6 of the IP network used as the premise of this invention. It is the figure which quoted FIG. 12 of patent document 2 used as the premise of this invention, and is a figure which shows the communication between terminals via a mobile telephone network and an IP network. It is the figure which quoted FIG. 13 of patent document 2 used as the premise of this invention, and is a figure which shows the connection control between terminals based on the common line signal system via a mobile telephone network and IP network. It is a figure for demonstrating the communication which connects wireless LAN and IP network in 1st Example of this invention. In 1st Example of this invention, it is a figure which shows the example of a terminal registration table. FIG. 3 is a diagram for explaining a MAC frame in a wireless LAN in the first embodiment of the present invention. It is a figure for demonstrating the communication in wireless LAN in 1st Example of this invention. In the 1st Example of this invention, it is a figure for demonstrating the other communication in wireless LAN. It is a figure for demonstrating access to the telephone number server with authentication in 1st Example of this invention in wireless LAN. In this invention, it is a figure for demonstrating the communication between terminals transmitted from the wireless LAN side. In 1st Example of this invention, it is a figure for demonstrating the communication between terminals which the wireless LAN side receives. FIG. 4 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. 3 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. 6 is a diagram for explaining a method of connecting a wireless LAN terminal to a wireless station of a mobile network in the first embodiment of the present invention. FIG. 3 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. 3 is a diagram for explaining an inter-terminal communication connection control method for requesting a connection from a terminal in a wireless LAN and connecting between other terminals via an IP network and a public switched telephone network in the first embodiment of the present invention. is there. The figure for demonstrating the connection connection control method between terminals in the 1st Example of this invention for making a connection request from the terminal connected to a public switched telephone network, and communicating with a terminal in wireless LAN via an IP network. It is. FIG. 3 is a diagram for explaining an inter-terminal communication connection control method for requesting a connection from a terminal in a wireless LAN and connecting between other terminals via an IP network and a mobile communication network in the first embodiment of the present invention. . FIG. 3 is a diagram for explaining an inter-terminal communication connection control method for requesting a connection 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. In 2nd Example of this invention, it is a figure which shows the relationship between the radio | wireless communication area | region of a mobile telephone, and an IP network. FIG. 10 is a part of a diagram illustrating a communication procedure for handover in which a terminal gateway is switched in the second embodiment of the present invention. FIG. 10 is a part of a diagram illustrating a communication procedure for handover in which a terminal gateway is switched in the second embodiment of the present invention. FIG. 10 is a part of a diagram illustrating a communication procedure for handover in which a terminal gateway is switched in the second embodiment of the present invention. FIG. 10 is a part of a diagram illustrating a communication procedure for handover in which a terminal gateway is switched in the second embodiment of the present invention. In 2nd Example of this invention, it is a figure which shows an example of a mobile telephone registration table. In 2nd Example of this invention, it is a figure which shows an example of the termination | terminus gateway address management table. In 2nd Example of this invention, it is a figure which shows an example of the telephone management server address table. In 2nd Example of this invention, it is a figure which shows an example of a radio base station address management table | surface. In a 2nd Example of this invention, it is a figure which shows an example of the external packet sent out from the wireless base station for the telephone connection request | requirement. It is a figure which shows an example of the internal packet transmitted from the proxy mobile telephone server transmitted from the network node apparatus for the telephone connection request | requirement in 2nd Example of this invention. It is a figure which shows an example of the internal packet sent out from the proxy mobile telephone server for the telephone connection request | requirement in 2nd Example of this invention. It is a figure which shows an example of the internal packet sent to the mobile telephone dedicated telephone number server in 2nd Example of this invention. In 2nd Example of this invention, it is a figure which shows an example of the internal packet returned from the telephone number server only for a mobile telephone. FIG. 10 is a diagram illustrating an example of an internal packet including an initial address message in the second embodiment of the present invention. It is a figure which shows an example of the internal packet sent toward the callee proxy mobile telephone server in 2nd Example of this invention. In the second embodiment of the present invention, it is a diagram showing an example of an internal packet sent toward the called network node device. In the second embodiment of the present invention, it is a diagram showing an example of an external packet sent toward the called radio base station. In 2nd Example of this invention, it is a figure which shows an example of an ACM packet. In the 2nd Example of this invention, it is a figure which shows an example of a CPG packet. In 2nd Example of this invention, it is a figure which shows an example of an ANM packet. In 2nd Example of this invention, it is a figure which shows the 1st example of an apparatus control table. In 2nd Example of this invention, it is a figure which shows the 2nd example of an apparatus control table. In 2nd Example of this invention, it is a figure which shows the 3rd example of an apparatus control table. FIG. 10 is a part of a diagram illustrating a CIC management table handled by the telephone management server 908-4 in the second embodiment of the present invention. FIG. 10 is a part of a diagram illustrating a CIC management table handled by the telephone management server 908-4 in the second embodiment of the present invention. FIG. 10 is a part of a diagram illustrating a CIC management table handled by the telephone management server 908-4 in the second embodiment of the present invention. FIG. 10 is a part of a diagram illustrating a CIC management table handled by the telephone management server 908-4 in the second embodiment of the present invention. FIG. 10 is a part of a diagram illustrating a CIC management table handled by the telephone management server 909-4 in the second embodiment of the present invention. FIG. 10 is a part of a diagram illustrating a CIC management table handled by the telephone management server 909-4 in the second embodiment of the present invention. FIG. 10 is a part of a diagram illustrating a CIC management table handled by the 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. In the 2nd Example of this invention, it is a figure which shows the external packet containing the hand-over request transmitted from the wireless base station. In the 2nd Example of this invention, it is a figure which shows the internal packet containing the handover request encapsulated by the network node apparatus. FIG. 10 is a diagram showing an internal packet including a handover request sent from a proxy telephone server in the second embodiment of the present invention. In the 2nd Example of this invention, it is a figure which shows the internal packet which notifies a hand-over request. In the second embodiment of the present invention, it is a diagram showing an internal packet including a wireless line request. It is a figure which shows the external packet transferred to the wireless base station containing a wireless line request | requirement in 2nd Example of this invention. In the 2nd Example of this invention, it is a figure which shows the external packet containing the radio | wireless line reply sent back from a radio base station. It is a figure which shows the internal packet containing the radio | wireless circuit answer transmitted to the proxy telephone server in 2nd Example of this invention. It is a figure which shows the internal packet containing the radio | wireless line answer transmitted to the telephone management server in 2nd Example of this invention. In 2nd Example of this invention, it is a figure which shows the internal packet containing the communication record write-in instruction | indication of a transmission side with respect to a table management server. In the 2nd Example of this invention, it is a figure which shows the internal packet which notifies communication record write information with respect to another telephone management server. In a 2nd Example of this invention, it is a figure which shows the internal packet containing the communication record write-in instruction | indication of the receiving side with respect to a table management server. FIG. 10 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. In the 2nd Example of this invention, it is a figure which shows the external packet which instruct | indicates the start of a handover procedure with respect to a radio base station. In the 2nd Example of this invention, it is a figure which shows the external packet which reports the start of a handover procedure from a wireless base station. FIG. 12 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. 10 is a diagram showing an internal packet for notifying the start of a handover procedure from the telephone management server 1 to the radio base station 1 in the second embodiment of the present invention. In the 2nd Example of this invention, it is a figure which shows the other external packet which instruct | indicates the start of a handover procedure with respect to another radio base station. In the 2nd Example of this invention, it is a figure which shows the other external packet which reports the start of a handover procedure from another radio base station. FIG. 10 is a diagram showing an internal packet for reporting the start of a handover procedure from the radio base station 1 to the telephone management server 1 in the second embodiment of the present invention. FIG. 10 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. 10 is a diagram showing an internal packet for requesting release of a capsule control record and release of a radio line from the telephone management server 1 to the telephone management server 3 in the second embodiment of the present invention. FIG. 12 is a diagram showing an internal packet for requesting 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. In the second embodiment of the present invention, it is a diagram showing an internal packet for requesting the telephone management server 1 to update the mobile telephone registration table after handover from the telephone number server dedicated to the mobile telephone. FIG. 10 is a diagram showing a mobile telephone registration table after handover in the second embodiment of the present invention. In the second embodiment of the present invention, it is a diagram showing a REL packet designating the release of the telephone communication path after handover. In the second embodiment of the present invention, it is a diagram showing an RLC packet for confirming the release of the telephone communication path after handover. FIG. 12 is a part of a diagram illustrating a handover communication procedure in which only a radio base station is switched in the second embodiment of the present invention. FIG. 12 is a part of a diagram illustrating a handover communication procedure in which only a radio base station is switched in the second embodiment of the present invention. FIG. 12 is a part of a diagram illustrating a handover communication procedure in which only a radio base station is switched in the second embodiment of the present invention. FIG. 12 is a part of a diagram illustrating a handover communication procedure in which only a radio base station is switched in the second embodiment of the present invention. It is a figure for demonstrating the procedure of the telephone number registration of a mobile telephone, and the initial position registration of a mobile telephone in 2nd Example of this invention. It is a figure for demonstrating the procedure of the new location registration of a mobile telephone in 2nd Example of this invention. In the second embodiment of the present invention, it is a diagram showing an external packet for requesting the initial location registration of the mobile phone transmitted from the radio base station. In the second embodiment of the present invention, it is a diagram showing an internal packet requesting initial position registration encapsulated in the network node device. In the second embodiment of the present invention, it is a diagram showing an internal packet requesting initial location registration sent from the proxy telephone server. In the second embodiment of the present invention, it is a diagram showing an internal packet including a request for initial location registration sent to a telephone number server dedicated to a mobile phone. In the 2nd Example of this invention, it is a figure which shows the external packet which requests | requires the update of the registration position of the mobile telephone transmitted from a wireless base station. In the second embodiment of the present invention, it is a diagram showing an internal packet including a registration location update request of the mobile phone. FIG. 6 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 phone in the second embodiment of the present invention. It is a figure which shows the relationship between the telephone number server only for a mobile telephone, and a root telephone number server in 2nd Example of this invention. In 2nd Example of this invention, it is a figure for demonstrating communication between the telephone number server only for a mobile telephone, and a root telephone number server. FIG. 10 is a diagram showing a telephone call connection procedure from a fixed telephone to a mobile telephone in the second embodiment of the present invention. FIG. 10 is a part of a diagram for explaining a handover communication procedure when a telephone call connection is made from a mobile telephone to a fixed telephone in the second embodiment of the present invention. FIG. 10 is a part of a diagram for explaining a handover communication procedure when a telephone call connection is made from a mobile telephone to a fixed telephone in the second embodiment of the present invention. FIG. 10 is a part of a diagram for explaining a handover communication procedure when a telephone call connection is made from a mobile telephone to a fixed telephone in the second embodiment of the present invention. FIG. 10 is a part of a diagram for explaining a handover communication procedure when a telephone call connection is made from a mobile telephone to a fixed telephone in the second embodiment of the present invention. It is a figure for demonstrating the example which a mobile telephone hands over when a mobile telephone and an IP terminal communicate in 2nd Example of this invention. It is a figure for demonstrating the other example in which a mobile telephone hand-overs in 2nd Example of this invention, when a mobile telephone and an IP terminal communicate. In the 3rd Example of this invention, it is a figure which shows the mode of the internal structure of an IP network, and the connection of LAN outside an IP network. In the 3rd Example of this invention, it is a figure which shows the procedure which registers terminal information into an IP network. In the 3rd Example of this invention, it is a figure which shows the communication path setting between terminal, release procedure, etc. FIG. In a 3rd Example of this invention, it is a figure which shows a path setting request packet. In the third embodiment of the present invention, the path setting request packet is converted into an internal packet. In the 3rd Example of this invention, it is a figure which shows the other internal packet format of a path setting request packet. In the 3rd Example of this invention, it is a figure which shows the packet which queries DNS about the address of a terminal. In the 3rd Example of this invention, it is a figure which shows the packet which obtains the address reply of a terminal from DNS. In the 3rd Example of this invention, it is a figure which shows the 1st form of the internal packet transferred to another path management server from a path management server. In 3rd Example of this invention, it is a figure which shows an example of a path setting rejection table. In the 3rd Example of this invention, it is a figure which shows the 2nd form of the internal packet transferred to another path management server from a path management server. FIG. 15 is a diagram showing a packet instructing setting of a communication record from the path management server to the table management server in the third embodiment of the present invention. It is a figure which shows an example of the external packet transmitted / received between terminals in 3rd Example of this invention. In the 3rd Example of this invention, it is the figure by which the external packet transmitted / received between terminals is converted into the internal packet. FIG. 10 is a diagram showing a communication path release request packet in the third embodiment of the present invention. In the 3rd Example of this invention, it is a figure which shows the 3rd form of the internal packet transferred to another path management server from a path management server. In a 3rd Example of this invention, it is a figure which shows an example of the packet which requests | requires the setting rejection of a communication path. In a 3rd Example of this invention, it is a figure which shows the structural example of a domain name. In the 3rd Example of this invention, it is a figure which shows the example of a path setting procedure using the communication path setting permission table. In the 3rd Example of this invention, it is a figure which shows the structural example of a communication path setting permission table. In 3rd Example of this invention, it is a figure which shows the tree structure of a domain name server. It is a figure which shows a mode that several IP networks are connected in 3rd Example of this invention. It is a figure for demonstrating the variation which implements an internal packet by the frame below 3 layers of communication in 3rd Example of this invention. In the 3rd Example of this invention, it is a figure which shows the variation by which an internal packet and an external packet are the same formats. In a 3rd Example of this invention, it is a figure which shows a mode that one terminal delivers a content, after setting a communication path with several terminals. In 3rd Example of this invention, it is a figure which shows an example which 1 terminal communicates after setting a communication path with several terminals. In a 3rd Example of this invention, it is a figure which shows that several terminals can each communicate with a public server by setting a communication path. In a 3rd Example of this invention, it is a figure which shows an example which a some terminal communicates after setting a communication path with a public server, respectively. It is a figure for demonstrating the mode of registration of an IP address and the function of an address test | inspection module in 4th Example of this invention. It is a figure for demonstrating operation | movement of the MPLS edge router used in combination with an address test | inspection module in 4th Example of this invention. It is a figure which shows the example which transfers an IP packet using the conventional encapsulation technique. It is a figure which shows the example of the conventional apparatus control table. It is a figure which shows the example of the conventional apparatus control table.

Explanation of symbols

1 IP network 2, 3 network node equipment 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 Wireless base station 160 Terminals 202 to 205 Wireless Communication area 210, 210X Mobile phone registration table 211, 211Z Terminal gateway address management table 211X Server address table 212, 212X Wireless base station address management table 249 Mobile phone registration table 300, 300-5, 300-6 IP network 300X, 300Y Communication Networks 301-303 Terminal gateways 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 Route 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 networks 511, 512 Switch 600 IP network 601 Mobile communication network 602 Public switched telephone network 603 Terminal gateway 604, 605 Relay gateway 606, 608 Relay switch 607, 609 Switch,
610 Radio base station 612, 613 Terminal 900, 900X IP network 900-10 to 900-12 IP network 902-1 to 902-5 Radio base station 910-1 to 910-4 Device control table 906-4A to 906-4B CIC Management table 908-4A to 908-4D CIC management table 909-4A to 909-4C CIC management table 966 Telephone number server 901-1 to 901-4 Termination gateway 914-1 to 914-4 Termination control unit 910-1 to 910 -4 Device Control Tables 906-1 to 909-1 Network Node Devices 906-2 to 909-2 Proxy Phone Servers 906-3 to 909-3 Table Management Servers 906-4 to 909-4 Phone Management Servers 906-5 to 909 -5 Telephone number server (or lower-level telephone number server)
906-6 to 909-6 Proxy mobile phone servers 96-1 to 916-4 Router 995 Higher telephone number servers 990-1 to 990-2 Users 991-1 to 991-2 Recipients 992-1 to 992-2 Users Service server 1040 IP network 1041 to 1044 Network node device 1200 Wireless LAN range 1201 to 1203 Wireless unit 1204 to 1206 Wireless transmission / reception units 1207 to 1209 IP processing unit,
1210-1212 wireless communication path,
1214-1216 communication line,
1217-1218 routers,
1219 Media router 1220-1223 Terminal 1224 Authenticated telephone number server 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 (13)

The IP network includes two or more network node devices, and an external IP packet is converted into an internal packet at the ingress network node device and transferred inside the IP network, and the external IP packet is transferred from the internal packet to the external IP packet at the egress network node device. Including the function of restoring the terminal, the wireless base station 1 or the media router 1, the telephone management server 1, the telephone management server 2, the wireless base station 2 or the media router 2, and the inter-terminal communication connection control procedure via the terminal 2 The communication procedure between the telephone management server 1 and the telephone management server 2 is unified by a call connection control method for telephone communication applied to the IP network, and the terminal 2 is a mobile telephone 2 or a fixed telephone 2. And the mobile phone 1 within the radio communication area 1 of the radio base station 1 is the mobile phone 1, the radio base station 1, the termination gateway 1, The terminal 3 manages the mobile telephone 1 while continuing telephone communication with the mobile telephone 2 or the fixed telephone 2 via the terminal gateway 2, the radio base station 2, 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 where it communicates with a radio base station 3 and continues telephone communication with the mobile telephone 2 or fixed telephone 2. The IP network includes two or more network node devices, and an external IP packet is converted into an internal packet at the ingress network node device and transferred inside the IP network, and the external IP packet is transferred from the internal packet to the external IP packet at the egress network node device. Including the function of restoring the terminal, the wireless base station 1 or the media router 1, the telephone management server 1, the telephone management server 2, the wireless base station 2 or the media router 2, and the inter-terminal communication connection control procedure via the terminal 2 The communication procedure between the telephone management server 1 and the telephone management server 2 is unified by a call connection control method for telephone communication applied to the IP network, and the terminal 2 is a mobile telephone 2 or a fixed telephone. 2 and the mobile telephone 1 within the radio communication area 1 of the radio base station 1 is the mobile telephone 1, the radio base station 1, and the termination gateway. The mobile telephone 1 continues to communicate with the mobile telephone 2 or the fixed telephone 2 via the terminal gateway 2, the wireless base station 2, the mobile telephone 2 or the fixed telephone 2, while the mobile telephone 1 A terminal-to-terminal communication connection control method using an IP network, characterized in that the mobile phone 2 or the fixed phone 2 is continued to communicate with the mobile phone 2 or the fixed phone 2 by moving to a geographical location where communication is performed. The IP network includes two or more network node devices, and an external IP packet is converted into an internal packet at the ingress network node device and transferred inside the IP network, and the external IP packet is transferred from the internal packet to the external IP packet at the egress network node device. Including the function of restoring the terminal, the wireless base station 1 or the media router 1, the telephone management server 1, the telephone management server 2, the wireless base station 2 or the media router 2, and the inter-terminal communication connection control procedure via the terminal 2 The communication procedure between the telephone management server 1 and the telephone management server 2 is standardized by a call connection control method for telephone communication applied to the IP network, the terminal 2 is an IP terminal, The mobile telephone 1 within the range of the radio communication area 1 of the station 1 includes the mobile telephone 1, the radio base station 1, the termination gateway 1, and the termination gateway 2. The mobile telephone 1 moves to a geographical location where it communicates with the radio base station 3 managed by the termination gateway 3 while continuing to communicate with the IP terminal via the radio base station 2 and the IP terminal, and the IP A communication connection control method between terminals using an IP network, characterized by continuing communication with a terminal. The IP network includes two or more network node devices, and an external IP packet is converted into an internal packet at the ingress network node device and transferred inside the IP network, and the external IP packet is transferred from the internal packet to the external network node device. In the inter-terminal communication connection control procedure including the function to be restored, the terminal 1, the radio base station 1 or the media router 1, the telephone management server 1, the telephone management server 2, the radio base station 2 or the media router 2, and the terminal 2 The communication procedure between the telephone management server 1 and the telephone management server 2 is standardized by a call connection control method of telephone communication applied to the IP network, the terminal 2 is an IP terminal, and the wireless base station The mobile telephone 1 within the radio communication area 1 of the station 1 includes the mobile telephone 1, the radio base station 1, the termination gateway 1, the termination gateway 2, While continuing to communicate with the IP terminal via the wireless base station 2 and the IP terminal, the mobile telephone 1 moves to a geographical location where it communicates with the wireless base station 2 and communicates with the IP terminal. A terminal-to-terminal communication connection control method using an IP network, characterized by continuing. 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) pass through an IP communication line. Directly or indirectly via another IP network (Nk), the IP network Nm includes a telephone number server m dedicated to a mobile telephone, and the root telephone number server dedicated to the mobile telephone is any of the IP networks Nm. And the telephone number server can obtain an IP address and related information related to the telephone number of the telephone number server Nn via a route telephone number server dedicated to the mobile telephone. While using a dedicated route telephone management server, while performing telephone communication via 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. The mobile telephone 1 Move within the radio communication area 3 of the radio base station and continue telephone communication with the mobile telephone 1, radio base station 3, IP network Nm, IP network Nn, radio base station 2, mobile telephone 2 or fixed telephone 2 A terminal-to-terminal communication connection control method using an IP network. 5. The mobile phone registration table according to claim 1, wherein when the handover is performed, an internal address that is position information of the telephone after movement is rewritten as a record in a mobile telephone registration table in a telephone number server dedicated to the mobile telephone. A terminal-to-terminal communication connection control method using the described IP network. 5. The inter-terminal communication connection control method using an IP network according to claim 1, wherein a CIC management table including at least a line number, a transmission source telephone number, and a destination telephone number is used for connection control. 5. The initial value of the CIC management table that is newly used after the mobile phone is moved is obtained by referring to the CIC management table that is used before the mobile phone is moved. An inter-terminal communication connection control method using an IP network. 5. The IP network according to claim 1, wherein the radio base station uses a radio base station address management table including an external IP address used for voice communication, a port number, and a radio channel identification symbol. The terminal-to-terminal communication connection control method. 5. A terminal using an IP network according to claim 1, wherein a server address table including address information of a telephone management server, a radio base station, and a mobile proxy telephone server is used for connection control. Inter-communication connection control method. 2. An internal IP address for encapsulating an external packet for voice communication is held in a termination gateway address management table, and the internal IP address is divided into used and unused and managed. A terminal-to-terminal communication connection control method using the IP network according to any one of claims 1 to 4. 5. The IP network according to claim 1, 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 called telephone. A terminal-to-terminal communication connection control method. The IP network includes two or more network node devices, and the radio base stations 1, 2, and 3 outside the IP network are connected to one of the network node devices via a communication line, and the radio base station 1 , 2, 3 have wireless communication areas 1, 2, 3 with wireless terminals, and the wireless terminal 1 inside the wireless communication area 1 is connected to a wireless communication path 1, a wireless base station 1, The wireless terminal performs communication to and from the wireless terminal 2 through the communication line 1, the network node apparatus 1, the IP network, the network node apparatus 2, the communication line 2, the wireless base station 2, and the wireless communication path 2, and the wireless terminal. 1 is geographically moved inside a wireless communicable region 3 that overlaps the wireless communicable region 1 during communication with the wireless terminal 2, and the wireless terminal 1 communicates with a wireless communication path 3, a wireless base station 3, a communication line 3, network node apparatus 3, IP network, network node apparatus 2, communication line 2 Communication connection control method between the wireless terminal using the IP network, characterized in that to enable handover radio base station 2, via a wireless communication channel 2 continues communication with the wireless terminal 2.

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