JP2004140786A - Position management server and mobile communication system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To realize a paging to a mobile terminal in a wireless system having no paging function to the mobile terminal. <P>SOLUTION: The system comprises a process wherein a position management server in a wireless network using a wireless system having no paging function requests a paging of a mobile terminal from a terminal management server in a cellular network using a cellular wireless, a process in which the terminal management server requests a paging from the mobile terminal by using the cellular network, a process in which the mobile terminal receives the paging request and connects the wireless network to wireless channel, a process in which the mobile terminal requests the allocation of the position information from the wireless network and acquires it, and a process for notifying the position management server in the wireless network of the position information acquired by the mobile terminal. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a location management server that manages the location of a mobile terminal on a wireless network using a wireless system without a paging function, and a mobile communication system.
[0002]
[Prior art]
In recent years, for example, a public wireless LAN service using a wireless LAN system using a wireless system such as IEEE 802.11 has been provided (for example, Non-Patent Document 1), and a wireless Internet access environment is becoming widespread. In such a communication service in the public wireless LAN service, a terminal mainly accesses a group of servers existing in the Internet, such as browsing a homepage using the Web.
[0003]
On the other hand, an Internet service in which a server group accesses a terminal, such as an IP phone and a push-type service, is realized.
[0004]
[Non-patent document 1]
ANSI / IEEE Std 802.11, 1999 Edition
[0005]
[Problems to be solved by the invention]
In the wireless LAN system, the mobile terminal can only take a state in which the wireless channel is always connected or a state in which the wireless channel is completely disconnected and the power of the wireless interface is turned off. However, if the wireless channel is always connected, power will be consumed. Therefore, when a portable mobile terminal is adopted as a terminal, the power of the wireless interface is turned off while the mobile terminal is not constantly performing communication in order to extend the duration. That is, when the server group accesses such a mobile terminal, the communication channel of the mobile terminal is not connected unless the mobile terminal is communicating.
[0006]
Furthermore, when the communication channel of the mobile terminal is not connected, the server group cannot detect that the mobile terminal has moved, and cannot manage the IP address that is the location information of the mobile terminal.
[0007]
As described above, in the wireless LAN system using the wireless access system without the intermittent reception function, there is a problem that the server group cannot perform paging processing, that is, paging for the mobile terminal.
[0008]
The present invention has been made in view of such a problem, and uses a wireless access method that does not have an intermittent reception function, thereby realizing paging for a mobile terminal in a wireless system that does not have a paging function for a mobile terminal. The purpose is to do.
[0009]
[Means for Solving the Problems]
A position management server of the present invention is arranged on a wireless network using a wireless system without a paging function, and manages position information of a mobile terminal that performs communication using the wireless network and a cellular network using cellular radio. Paging request means for requesting a paging of the mobile terminal to a terminal management server having a function of paging the mobile terminal using the cellular network, and paging request means for paging by the terminal management server. And a position information receiving means for receiving the position information transmitted from the mobile terminal that has acquired the position information on the network.
[0010]
Thereby, paging for the mobile terminal can be realized by using the terminal management server provided on the cellular network. Further, by paging the mobile terminal, location information is allocated to the mobile terminal, and the location information can be notified to a location management server on the wireless network. As a result, the location information of the mobile terminal can be specified on the wireless network side, and communication can be started by calling the mobile terminal location information.
[0011]
The location management server of the present invention, in the location management server, receives location information of the mobile terminal via the wireless network.
[0012]
Thus, the location management server can efficiently and quickly acquire the location information of the mobile terminal on the wireless network side using a broadband and highly efficient IP-based network.
[0013]
The location management server of the present invention, in the location management server, receives location information of the mobile terminal via the cellular network.
[0014]
Thereby, the location management server can safely and safely place the mobile terminal on the wireless network side without depending on a network existing between the mobile terminal and the mobile terminal on the wireless network side without being exposed to dangers such as packet loss and information leakage. Location information can be obtained.
[0015]
The terminal management server of the present invention is a mobile terminal that performs communication using a cellular network using the wireless network and cellular radio from a location management server disposed on a wireless network using a wireless system without a paging function. When a request to page is received, paging processing means for paging the mobile terminal using the cellular network, and paging sent from the mobile terminal that has acquired location information on the wireless network via the cellular network. And a position information notifying unit for notifying the position management server of the received position information.
[0016]
Thereby, paging for the mobile terminal can be realized by using the terminal management server provided on the cellular network. Further, by paging the mobile terminal, location information is allocated to the mobile terminal, and the location information can be notified to a location management server on the wireless network. As a result, the location information of the mobile terminal can be specified on the wireless network side, and communication can be started by calling the mobile terminal location information.
[0017]
A mobile terminal according to the present invention includes a paging receiving unit for receiving a paging request sent from a paging processing unit on a cellular network using cellular radio, and a wireless system having no paging function when receiving the paging request. Wireless connection means for connecting a wireless network and a wireless channel using, a request for allocation of position information to the wireless network using the wireless channel, position information acquisition means to acquire, the acquired position information A position information notifying unit for notifying a position management server on the wireless network.
[0018]
Thereby, paging for the mobile terminal can be realized by using the terminal management server provided on the cellular network. Further, by paging the mobile terminal, location information is allocated to the mobile terminal, and the location information can be notified to a location management server on the wireless network. As a result, the location information of the mobile terminal can be specified on the wireless network side, and communication can be started by calling the mobile terminal location information.
[0019]
The mobile terminal of the present invention, in the mobile terminal, notifies the location information to the location management server via the wireless network.
[0020]
Thus, the location management server can efficiently and quickly acquire the location information of the mobile terminal on the wireless network side using a broadband and highly efficient IP-based network.
[0021]
The mobile terminal of the present invention notifies the location information to the location management server via the cellular network in the mobile terminal.
[0022]
Thereby, the location management server can safely and safely place the mobile terminal on the wireless network side without depending on a network existing between the mobile terminal and the mobile terminal on the wireless network side without being exposed to dangers such as packet loss and information leakage. Location information can be obtained.
[0023]
A mobile communication system according to the present invention includes: the location management server described above; a terminal management server having a function of paging the mobile terminal using the cellular network; and the mobile terminal described above. It is a communication system.
[0024]
The present invention is a mobile communication system including the location management server, the terminal management server, and the mobile terminal.
[0025]
The present invention is the mobile communication system described above, further comprising an authentication server that restricts a paging function of the terminal management server according to the mobile terminal.
[0026]
Thereby, the paging function and the notification function of the position information of the mobile terminal can be restricted according to the mobile terminal. Thereby, for example, a system in which mobile communication systems of different operators are integrated can be constructed.
[0027]
The present invention relates to a location management method for managing location information of mobile terminals that perform communication using the wireless network and a cellular network using cellular radio on a wireless network using a radio system without a paging function. Requesting a paging of the mobile terminal to a terminal management server having a function of paging the mobile terminal using the cellular network, and obtaining location information on the wireless network that has been paged by the terminal management server. Receiving the location information sent from the mobile terminal.
[0028]
The present invention provides a request for paging a mobile terminal that performs communication using the wireless network and a cellular network using cellular radio from a location management server arranged on a wireless network using a wireless system without a paging function. Paging the mobile terminal using the cellular network when received, and positioning the location information sent from the mobile terminal that has been paged and obtained location information on the wireless network via the cellular network. A position information notification method, comprising: receiving the position information; and notifying the position management server of the received position information.
[0029]
The present invention relates to a step of receiving a paging request sent from paging processing means on a cellular network using cellular radio, and a radio network using a radio system without a paging function when the paging request is received. Connecting a wireless channel to the wireless network, requesting allocation of location information to the wireless network using the wireless channel, acquiring the location information, and notifying the location management server on the wireless network of the acquired location information. Performing a position information notification method.
[0030]
The present invention provides a method for performing communication using the wireless network and the cellular network from a position management server on a wireless network using a wireless system without a paging function to a terminal management server on a cellular network using cellular wireless. Requesting a paging of the mobile terminal to be performed, the step of the terminal management server making a paging request to the mobile terminal using the cellular network, the mobile terminal receiving the paging request, the wireless network and a wireless channel. Connecting the mobile terminal, the mobile terminal requests allocation of location information to the wireless network, obtaining the location information, and notifies the location management server on the wireless network of the location information obtained by the mobile terminal And a step of performing It is a management method.
[0031]
The present invention is a program for causing a computer on a wireless network using a wireless system without a paging function to manage position information of a mobile terminal performing communication using the wireless network and a cellular network using cellular wireless. Causing the computer to request a paging of the mobile terminal from a terminal management server having a function of paging the mobile terminal using the cellular network; and a page on the wireless network paged by the terminal management server. Receiving the position information transmitted from the mobile terminal that has acquired the information.
[0032]
The present invention provides a computer on a cellular network using cellular radio, from a location management server located on a radio network using a radio system without a paging function, communication using the radio network and the cellular network. Receiving a request to page the mobile terminal to perform, and, if receiving the request to page, causing the mobile terminal to make a paging request using the cellular network; and A step of receiving the position information sent from the mobile terminal that has acquired the position information via the cellular network, and a step of notifying the position management server of the received position information. It is a featured program.
[0033]
The present invention relates to a step of causing a computer to receive a paging request sent from a paging processing unit on a cellular network using cellular radio, and a radio system having no paging function when the paging request is received. Connecting the used wireless network to a wireless channel; requesting the wireless network to assign location information using the wireless channel; and causing the wireless network to acquire the acquired location information. Causing the management server to be notified.
[0034]
The present invention is a computer-readable storage medium storing the above program.
[0035]
The terminal management server according to the present invention, wherein in the terminal management server described above, when the mobile terminal fails to acquire location information on the wireless network, a cellular assigning cellular location information on the cellular network to the mobile terminal. A configuration including a position information assigning unit and a position information notifying unit for notifying the assigned position information to the position management server is adopted.
[0036]
Thereby, when the mobile terminal fails to acquire the location information on the wireless network, the terminal management server assigns location information on the cellular network to the mobile terminal, and the location management server Notice. As a result, even when communication cannot be performed on the wireless network side, position information of the mobile terminal can be specified in the cellular network, and communication with the mobile terminal can be started through the cellular network.
[0037]
The mobile terminal of the present invention, in addition to the mobile terminal, when the acquisition of location information in a wireless network using a wireless system having no paging function, when the location of the cellular network relative to the cellular network, A configuration including a cellular position information acquisition unit that requests and acquires information allocation is adopted.
[0038]
Accordingly, when the mobile terminal fails to connect to the wireless channel with the wireless network and cannot acquire the location information, the location information on the cellular network is allocated to the mobile terminal, and the location information is transmitted to the location management server. Can be notified. As a result, even when communication cannot be performed using the wireless network, position information of the mobile terminal can be specified in the cellular network, and communication with the mobile terminal can be started through the cellular network.
[0039]
The mobile terminal of the present invention, in the mobile terminal, when the acquisition of the location information in the wireless network by receiving the paging request from the cellular network has failed, the user notification means for notifying the user of the event that received the paging request, The configuration provided is adopted.
[0040]
Thereby, it is possible to recognize that the user of the mobile terminal is out of the wireless network area, and to move to the wireless network area as needed.
[0041]
The present invention provides a request for paging a mobile terminal that performs communication using the wireless network and a cellular network using cellular radio from a location management server arranged on a wireless network using a wireless system without a paging function. Paging the mobile terminal using the cellular network if received, and, if the paged mobile terminal fails to obtain location information on the wireless network, the mobile terminal A method of notifying the position information, comprising: allocating the above position information; and notifying the position management server of the allocated position information.
[0042]
The present invention provides a method for performing communication using the wireless network and the cellular network from a position management server on a wireless network using a wireless system without a paging function to a terminal management server on a cellular network using cellular wireless. Requesting paging of the mobile terminal to be performed, the step of the terminal management server making a paging request to the mobile terminal using the cellular network, the mobile terminal receiving the paging request, and location information in the wireless network. If it fails to obtain, the mobile terminal requests the allocation of location information in the cellular network to the cellular network, the step of obtaining, and the cellular network location information obtained by the mobile terminal On the wireless network A location management method, characterized by comprising a step of notifying the serial location management server, the.
[0043]
BEST MODE FOR CARRYING OUT THE INVENTION
(Embodiment 1)
Hereinafter, a mobile communication system using the mobile communication method according to the first embodiment of the present invention will be described with reference to the accompanying drawings.
[0044]
The mobile communication system is a system that integrates a plurality of wireless accesses, including cellular wireless, which is a wireless access system having an intermittent reception function. In the present embodiment, a wireless LAN system using IEEE 802.11 will be described as an example of a main wireless access system other than cellular wireless. However, the wireless system is not necessarily limited, and another wireless access system that does not have a paging function and is used for broadband Internet access may be used.
[0045]
Further, Embodiment 1 will be described on the assumption that the wireless LAN system is configured based on an IP network, and an incoming call such as an IP telephone is generated for a dormant mobile terminal.
[0046]
First, the configuration of the mobile communication system according to the first embodiment will be described with reference to FIG. FIG. 1 is a configuration diagram of the mobile communication system according to the first embodiment.
[0047]
The mobile communication system 100 is a system in which a cellular network 103 based on cellular radio and an IP network 104 based on a wireless LAN system using IEEE 802.11 are integrated.
[0048]
The cellular network 103 has a communicable range (cell) 105 through cellular radio access via a cellular network base station 110. Further, the IP network 104 has a range (cell) 106 in which communication by wireless LAN access is possible via the wireless LAN access device 111.
[0049]
Further, the mobile communication system 100 includes a mobile terminal 101 that has both wireless interfaces of cellular wireless and wireless LAN and can communicate with the cellular network 103 and the IP network 104. The configuration of the mobile terminal 101 will be described later in detail.
[0050]
Further, the mobile communication system 100 includes a call originating terminal 102 that makes a call to the mobile terminal 101. When making a call to the mobile terminal 101, the caller terminal 102 sends a call request to the call control server 107 on the IP network and a request to resolve the connection destination IP address based on the connection destination telephone number. I do.
[0051]
The call control server 107 is a server that implements call processing in the IP network 104. When receiving a call request or a request for resolving the IP address of the connection destination based on the telephone number of the connection destination from the source terminal 102, the call control server 107 sends the call to the location management server 108 of the IP network 104. A position information request for inquiring an IP address, which is position information of the mobile terminal 101, is transmitted.
[0052]
The location management server 108 is a server that manages location information of the mobile terminal 101 in the IP network 104.
[0053]
The location management server 108 is provided with a location information registration unit 112 in which an IP address that is location information of the mobile terminal 101 is registered. The IP addresses of terminals other than the mobile terminal 101 running on the IP network 104 are also registered in the location information registration unit 112.
[0054]
Further, the location management server 108 is provided with a location information request receiving unit 113 that receives a transmission request of an IP address, which is location information of the mobile terminal 101, transmitted from the call control server 107. When receiving the request for transmitting the IP address, the position information request receiving unit 113 activates the position information search unit 114 provided in the position management server 108.
[0055]
When receiving the information indicating that the transmission request of the IP address has been received, the location information search unit 114 searches whether the IP address of the mobile terminal 101 is registered in the location information registration unit 112. Then, when the IP address of mobile terminal 101 is not registered in location information registration section 112, location information search section 114 activates paging request transmission section 115 provided in location management server 108.
[0056]
Paging request transmission section 115 transmits a paging request for paging mobile terminal 101 to terminal management server 109 in cellular network 103.
[0057]
The location management server 108 includes a location information receiving unit 116 that receives the IP address of the mobile terminal 101 sent from the mobile terminal 101. Location information receiving section 116 registers the received IP address of mobile terminal 101 in location information registration section 112. In addition, the position information receiving unit 116 sends the received IP address of the mobile terminal 101 to the position information notifying unit 117 provided in the position management server 108.
[0058]
The location information notification unit 117 notifies the call control server 107 of the transmitted IP address of the mobile terminal 101.
[0059]
Further, the terminal management server 109 is provided with a paging request receiving unit 125 that receives a paging request sent from the paging request transmitting unit 115 of the location management server 108. When receiving the paging request, the paging request receiving unit 125 activates the paging processing unit 118 provided in the terminal management server 109.
[0060]
Paging processing section 118 sends a paging request to activate mobile terminal 101 to mobile terminal 101 via cellular network base station 110. As a result, a paging wireless channel is connected between the terminal management server 109 and the mobile terminal 101.
[0061]
Also, the mobile terminal 101 is provided with a paging request receiving unit 119 that receives a paging request sent from the paging processing unit 118 of the terminal management server 109. When receiving the paging request, paging request receiving section 119 activates wireless LAN connection section 120 provided in mobile terminal 101.
[0062]
The wireless LAN connection unit 120 changes the state of the mobile terminal 101 from the sleep state to the active state, and connects the wireless network to the IP network 104 on the wireless LAN side of the mobile terminal 101.
[0063]
In addition, the mobile terminal 101 is provided with an IP address assignment requesting unit 121 that requests the IP network 104 to assign an IP address. The IP address assignment requesting unit 121 receives an IP address assignment by using a function such as DHCP (RFC1541) or Stateless Address Autoconfiguration (RFC2462).
[0064]
In addition, the mobile terminal 101 is provided with an IP address assignment receiving unit 122 that receives an IP address sent from the IP network 104. IP address assignment receiving section 122 sends the received IP address to IP address notifying section 123 provided in mobile terminal 101.
[0065]
The IP address notification unit 123 sends the assigned IP address to the location management server 108 via the wireless channel activated by the wireless LAN connection unit 120, the wireless LAN access device 111, and the IP network 104.
[0066]
Further, the mobile terminal 101 is provided with an IP address setting unit 124 for setting the assigned IP address to itself.
[0067]
Next, the basic operation of the mobile communication system according to the first embodiment will be specifically described with reference to FIGS. 2 and 3 are basic operation sequence diagrams of the mobile communication system according to the first embodiment.
[0068]
First, when the calling source terminal 102 makes a call to the mobile terminal 101, a call request to the call control server 107 (ST201) and the IP address of the connection destination are resolved based on the telephone number of the connection destination. A request to transmit is sent (ST202).
[0069]
Next, the call control server 107 transmits a position information request to the position management server 108 to inquire the position management server 108 in the IP network 104 of the IP address of the mobile terminal 101 to which the call connection is to be made ( ST203).
[0070]
On the other hand, the position management server 108 receives the position information request in the position information request receiving unit 113. Next, the location information search unit 114 of the location management server 108 searches whether the IP address of the mobile terminal 101 exists in the location information registration unit 112 (ST204).
[0071]
At this time, since the mobile terminal 101 is in a sleep state, the connection in the wireless LAN has been lost, and the IP address in the IP network 104 is unknown. Therefore, it is necessary to activate (paging) the mobile terminal 101 and obtain the IP address of the mobile terminal 101. However, the location management server 108 cannot start the mobile terminal 101 because it is on the IP network 104 which is a wireless LAN system without a paging function. Therefore, the first embodiment focuses on the cellular network 103 having the wireless access function having the intermittent reception function, and activates the mobile terminal 101 using the cellular network 103. Hereinafter, the process of activating the mobile terminal 101 will be described.
[0072]
First, paging request transmission section 115 of location management server 108 transmits a paging request of mobile terminal 101 to terminal management server 109 (ST205).
[0073]
On the other hand, in the terminal management server 109, the paging request receiving unit 125 receives the paging request of the mobile terminal 101 sent from the location management server 108. Next, paging processing section 118 of terminal management server 109 issues a paging request to mobile terminal 101 (ST206).
[0074]
In response, mobile terminal 101 receives a paging request in paging request receiving section 119. Then, the wireless LAN connection unit 120 of the mobile terminal 101 changes the state of the mobile terminal 101 from the sleep state to the active state, and connects the wireless network to the IP network 104 on the wireless LAN side of the mobile terminal 101 (ST207).
[0075]
In this way, the mobile terminal 101 is activated using the cellular network 103.
[0076]
Next, the mobile terminal 101 proceeds to a process of receiving its own IP address on the IP network.
[0077]
First, the IP address allocation requesting unit 121 of the mobile terminal 101 makes an IP address allocation request to the IP network 104 (ST208), and uses functions such as DHCP (RFC1541) and Stateless Address Autoconfiguration (RFC2462). Receive an IP address assignment. Then, IP address assignment receiving section 122 of mobile terminal 101 receives the assigned IP address (ST209).
[0078]
In this way, the mobile terminal 101 receives the assignment of the IP address from the IP network 104.
[0079]
Next, IP address notifying section 123 of mobile terminal 101 notifies IP address to location management server 108 (ST210).
[0080]
On the other hand, the location management server 108 receives the IP address of the mobile terminal 101 in the location information receiving unit 116. Next, position information notifying section 117 of position management server 108 notifies call control server 107 of the IP address of mobile terminal 101 (ST211).
[0081]
On the other hand, the call control server 107 receives the IP address of the mobile terminal 101.
[0082]
As a result, the location management server 108 and the call control server 107 on the side of the IP network 104 resolve the IP address of the mobile terminal 101 to which the connection is made, so that communication between the source terminal 102 and the mobile terminal 101 is started ( ST212).
[0083]
As described above, according to Embodiment 1, paging for mobile terminal 101 can be realized by using the paging function provided on cellular network 103 side. Further, by activating the mobile terminal 101, an IP address is allocated to the mobile terminal 101, and this IP address can be notified to the IP network 104 side. As a result, the IP address of the mobile terminal 101 can be specified on the IP network 104 side, and it is possible to call the mobile terminal 101 and start communication.
[0084]
Further, by acquiring the IP address via the IP network 104 in this manner, the location management server 108 uses the broadband and high-efficiency IP-based network to enable the mobile terminal 101 on the IP network 104 side. Position information can be acquired efficiently and quickly.
[0085]
The operation performed by each processing unit of the mobile terminal 101, the position management server 108, and the terminal management server 109 may be a program, stored in a storage medium, and a general-purpose computer may execute the program.
[0086]
(Embodiment 2)
The second embodiment of the present invention is configured to limit the use of the paging function on the cellular network side based on information on a mobile terminal to be paged and a call originating terminal.
[0087]
First, the configuration of the mobile communication system according to the second embodiment will be described with reference to FIG. FIG. 4 is a configuration diagram of the mobile communication system according to the second embodiment. The same parts as those already described are denoted by the same reference numerals, and description thereof will be omitted.
[0088]
The mobile communication system 400 according to the second embodiment is different from the mobile communication system 100 according to the first embodiment in that an authentication server 301 is provided on the cellular network 103.
[0089]
The authentication server 301 is a server that determines permission for a paging process request from the IP network 104 side.
[0090]
Hereinafter, the paging process permission process of the mobile communication system according to the second embodiment will be described with reference to FIG. FIG. 5 is a flowchart of a paging process permission process of the mobile communication system according to the second embodiment.
[0091]
First, in response to a paging request from the terminal management server 109 on the cellular network 103 and the paging request from the location management server 108 on the IP network 104, information on the caller terminal 102 is sent to the authentication server 301 (ST501).
[0092]
On the other hand, authentication server 301 determines whether or not to permit use of the function of cellular network 103 based on the information (ST502).
[0093]
Next, paging processing section 118 continues paging processing if authentication server 301 permits (ST503), and notifies rejection to position management server 108 of IP network 104 (ST504) if authentication server 301 does not permit (ST504).
[0094]
As described above, according to the second embodiment, the paging function and the IP address notification function of the mobile terminal can be restricted according to the profiles of the mobile terminal and the source terminal. This makes it possible to provide the above-described functions only to, for example, mobile terminals and caller terminals subscribed to the operator of the cellular network 103. Alternatively, it is possible to construct a system in which mobile communication systems of different operators are integrated, and realize an advanced service for providing the above-described functions according to the contract contents of the subscriber.
[0095]
The operation performed by the authentication server 301 may be converted into a program, stored in a storage medium, and executed by a general-purpose computer.
[0096]
(Embodiment 3)
In the third embodiment of the present invention, the location information of the mobile terminal is notified to the IP network side via the cellular network side.
[0097]
First, the configuration of the mobile communication system according to the third embodiment will be described with reference to FIG. FIG. 6 is a configuration diagram of the mobile communication system according to the third embodiment. The same reference numerals are given to the same portions as those already described, and the description will be omitted.
[0098]
The mobile communication system 600 according to the third embodiment differs from the first embodiment in the configuration of the mobile terminal 603, the location management server 601, and the terminal management server 602.
[0099]
The mobile terminal 603 is provided with an IP address notification unit 604 that notifies the terminal management server 602 on the cellular network 103 of the assigned IP address.
[0100]
Further, the terminal management server 602 is provided with a paging request receiving unit 125 and a paging processing unit 118.
[0101]
Further, the terminal management server 602 is provided with a position information receiving unit 605 for receiving the IP address sent from the mobile terminal 603. The position information receiving unit 605 sends the received IP address to the position information notifying unit 606 provided in the terminal management server 602.
[0102]
The location information notification unit 606 notifies the location management server 601 on the IP network 104 of the transmitted IP address.
[0103]
The location management server 601 is provided with a location information receiving unit 607 for acquiring the IP address of the mobile terminal 603 sent from the terminal management server 602. The position information receiving unit 607 sends the received IP address to the position information notifying unit 117.
[0104]
Next, a basic operation of the mobile communication system according to the third embodiment will be specifically described with reference to FIGS. FIGS. 7 and 8 are basic operation sequence diagrams of the mobile communication system according to the third embodiment.
[0105]
First, when the calling terminal 102 calls the mobile terminal 603, the calling terminal 102 sends a call request (ST701) to the call control server 107 or a request to resolve the connection destination IP address based on the connection destination telephone number. Transmit (ST702).
[0106]
Next, the call control server 107 transmits a position information request to the position management server 601 to inquire the position management server 601 in the IP network 104 of the IP address of the mobile terminal 603 to which the call connection is to be made ( ST703).
[0107]
On the other hand, the position management server 601 receives the position information request in the position information request receiving unit 113. Next, position information search section 114 of position management server 601 searches for whether or not IP address of mobile terminal 603 is in position information registration section 112 (ST704).
[0108]
At this time, since the mobile terminal 603 is in a sleep state, the connection in the wireless LAN is lost, and the IP address in the IP network 104 is unknown.
[0109]
Therefore, next, paging request transmission section 115 of location management server 601 transmits a paging request of mobile terminal 603 to terminal management server 602 (ST705).
[0110]
On the other hand, the terminal management server 602 receives the paging request of the mobile terminal 603 sent from the location management server 601 in the paging request receiving unit 125. Next, paging processing section 118 of terminal management server 602 issues a paging request to mobile terminal 603 (ST706).
[0111]
In response, mobile terminal 603 receives a paging request in paging request receiving section 119. Then, wireless LAN connection section 120 of mobile terminal 603 changes the state of mobile terminal 603 from the sleep state to the active state, and connects wireless channel to IP network 104 on the wireless LAN side of mobile terminal 603 (ST707). In this way, the mobile terminal 603 is activated using the cellular network 103.
[0112]
Next, IP address assignment requesting section 121 of mobile terminal 603 issues an IP address assignment request to IP network 104 (ST708), and receives an IP address assignment. Then, IP address assignment receiving section 122 of mobile terminal 603 receives the assigned IP address (ST709).
[0113]
Next, IP address notifying section 604 of mobile terminal 603 notifies the terminal management server 602 of the IP address (ST710).
[0114]
In response, terminal management server 602 receives the transmitted IP address in position information receiving section 605, and sends the received IP address to position information notifying section 606 (ST711).
[0115]
On the other hand, the location management server 601 receives the IP address of the mobile terminal 603 in the location information receiving unit 607. Next, location information notifying section 117 of location management server 601 notifies call control server 107 of the IP address of mobile terminal 603 (ST712).
[0116]
On the other hand, the call control server 107 receives the IP address of the mobile terminal 603.
[0117]
As a result, the location management server 601 and the call control server 107 on the IP network 104 side have resolved the IP address of the mobile terminal 603 to be connected, so that communication between the source terminal 102 and the mobile terminal 603 is started ( ST713).
[0118]
As described above, according to the third embodiment, the IP network 104 can obtain the IP address of the mobile terminal 603 via the cellular network 103. As described above, by acquiring the IP address via the cellular network 103, the location management server 601 does not depend on the network interposed with the mobile terminal 603, and can perform packet loss, information leakage, etc. The position information of the mobile terminal 603 on the side of the IP network 104 can be safely acquired without being exposed to the danger.
[0119]
The first embodiment and the third embodiment may be combined to change the route of the IP address received by the IP network according to the communication status between the cellular network and the mobile terminal. That is, when the communication situation between the cellular network and the mobile terminal is poor, the IP network may receive the IP address directly from the mobile terminal.
[0120]
Further, by applying the second embodiment to the third embodiment, the paging function and the IP address notification function of the mobile terminal may be restricted according to the profiles of the mobile terminal and the source terminal.
[0121]
The operation performed by each processing unit of the mobile terminal 603, the position management server 601, and the terminal management server 602 may be a program, stored in a storage medium, and executed by a general-purpose computer.
[0122]
Note that the present invention is not limited to the above-described embodiment, and can be implemented in various forms. For example, the authentication server 301 may be arranged on the side of the IP network 104 which is a wireless network. Further, the method of assigning the IP address may be a method other than the method described above.
[0123]
(Embodiment 4)
In the fourth embodiment of the present invention, when the acquisition of the location information in the wireless LAN network fails, the location information in the cellular network is acquired instead, and the IP network side is notified. First, the configuration of the mobile communication system according to the fourth embodiment will be described using FIG. FIG. 9 is a configuration diagram of the mobile communication system according to the fourth embodiment. The same portions as those already described are denoted by the same reference numerals and description thereof will be omitted.
[0124]
The mobile communication system 900 according to the fourth embodiment differs from the third embodiment in the configuration of a terminal management server 901 and a mobile terminal 902.
[0125]
The mobile terminal 902 is provided with a position information acquisition failure notification unit 904. The location information acquisition failure notifying unit 904 notifies the terminal management server 901 that the location information acquisition failure has occurred when the mobile terminal 902 has failed to acquire location information due to being out of the service area (cell) 106 of wireless LAN access. Notify
[0126]
When the mobile terminal 902 fails to acquire location information (IP address) in the wireless LAN network due to reception of a paging request from the cellular network 103, a user notification notifying the user of an event of receiving the paging request from the cellular network 103 A section 905 is provided.
[0127]
Thereby, it is possible to recognize that the user of the mobile terminal is out of the wireless network area, and to move to the wireless network area as needed.
[0128]
Further, the terminal management server 901 is provided with a position information assigning unit 903 that assigns an IP address (cellular position information) in the cellular network 103 to the mobile terminal 902. The location information allocating unit 903 can virtually allocate an IP address that can be used in the cellular network 103 by using a function such as IPCP (RFC1332). Treat as information.
[0129]
In the terminal management server 901, when the position information receiving unit 605 receives the notification of the failure in obtaining the position information, it requests the position information allocating unit 903 to allocate the IP address of the mobile terminal 902. The location information assignment unit 903 assigns an IP address to the mobile terminal 902 and sends the IP address to the location information notification unit 606.
[0130]
Next, the basic operation of the mobile communication system according to the fourth embodiment will be specifically described with reference to FIG. FIG. 10 is a basic operation sequence diagram of the mobile communication system according to the fourth embodiment.
[0131]
First, when the originating terminal 102 makes a call to the mobile terminal 902, the originating terminal 102 sends a call request (ST1001) to the call control server 107 or a request to resolve the connection destination IP address based on the connection destination telephone number. Transmit (ST1002).
[0132]
Next, the call control server 107 transmits a position information request to the position management server 601 to inquire the position management server 601 in the IP network 104 of the IP address of the mobile terminal 902 to which the call connection is to be made ( ST1003).
[0133]
On the other hand, the position management server 601 receives the position information request in the position information request receiving unit 113. Next, location information search section 114 of location management server 601 searches for whether or not the IP address of mobile terminal 902 is in location information registration section 112 (ST1004).
[0134]
At this time, since the mobile terminal 902 is in a sleep state, the connection in the wireless LAN is lost, and the IP address in the IP network 104 is unknown.
[0135]
Therefore, next, paging request transmission section 115 of location management server 601 transmits a paging request of mobile terminal 902 to terminal management server 901 (ST1005).
[0136]
On the other hand, in the terminal management server 901, the paging request receiving unit 125 receives the paging request of the mobile terminal 902 sent from the location management server 601. Next, paging processing section 118 of terminal management server 901 issues a paging request to mobile terminal 902 (ST1006).
[0137]
In contrast, mobile terminal 902 receives a paging request in paging request receiving section 119. Then, the wireless LAN connection unit 120 of the mobile terminal 902 changes the state of the mobile terminal 902 from the sleep state to the active state, and tries to connect a wireless channel.
[0138]
At this time, in the fourth embodiment, the connection of the wireless channel fails due to the mobile terminal 902 being outside the wireless LAN communication area 106 (ST1007). The same applies to a case where an IP address cannot be obtained due to a shortage of resources on the wireless LAN side or the like.
[0139]
Location information acquisition failure notifying section 904 notifies terminal management server 901 that location information acquisition has failed (ST1008).
[0140]
On the other hand, when the position information receiving unit 605 receives the position information acquisition failure notification, the terminal management server 901 allocates an IP address (cellular position information) on the cellular network 103 to the mobile terminal 902 by the position information allocating unit 903. (ST1009), location information notification section 606 notifies location management server 601 of the assigned IP address on cellular network 103 (ST1010).
[0141]
On the other hand, the location management server 601 receives the IP address of the mobile terminal 902 on the cellular network 103 in the location information receiving unit 607. Next, location information notifying section 117 of location management server 601 notifies call control server 107 of the IP address of mobile terminal 902 on cellular network 103 (ST1011).
[0142]
On the other hand, the call control server 107 receives the IP address of the mobile terminal 902 on the cellular network 103.
[0143]
As a result, the location management server 601 and the call control server 107 on the side of the IP network 104 have resolved the IP address of the mobile terminal 902 to be connected to on the cellular network 103. Communication via 103 is started (ST1012).
[0144]
As described above, according to Embodiment 4, mobile terminal 902 fails to connect to the wireless channel with the wireless LAN network because mobile terminal 902 is out of the wireless LAN communication area, and wireless LAN 902 fails. Even when the location information of the network cannot be obtained, the location information (IP address) on the cellular network 103 can be allocated to the mobile terminal 902, and the location information can be notified to the location management server 601. Thus, even when communication cannot be performed using the wireless network, the position information of the mobile terminal 902 in the cellular network 103 can be specified by the IP address on the cellular network 103. As a result, communication between the source terminal 102 and the mobile terminal 902 via the cellular network 103 can be started.
[0145]
Note that the process from ST1008 to ST1009 after the mobile terminal 902 fails to obtain the location information is performed by the IP address allocation requesting unit 121 of the mobile terminal 902 obtaining an IP address by making an allocation request to the cellular network 103. Alternatively, the operation may be performed so as to notify the terminal management server 901.
[0146]
【The invention's effect】
As described above, according to the present invention, in a wireless system using a wireless system without a paging function for a mobile terminal, paging processing for the mobile terminal can be performed and communication can be started.
[0147]
Further, even when a wireless system using a wireless method without a paging function for the mobile terminal cannot be used, communication with the mobile terminal through the cellular network can be started.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of a mobile communication system according to a first embodiment of the present invention;
FIG. 2 is a first basic operation sequence diagram of the mobile communication system according to the first embodiment;
FIG. 3 is a second basic operation sequence diagram of the mobile communication system according to the first embodiment.
FIG. 4 is a configuration diagram of a mobile communication system according to a second embodiment of the present invention.
FIG. 5 is a flowchart of a paging process permission process of the mobile communication system according to the second embodiment.
FIG. 6 is a configuration diagram of a mobile communication system according to a third embodiment of the present invention.
FIG. 7 is a first basic operation sequence diagram of the mobile terminal system according to the third embodiment;
FIG. 8 is a second basic operation sequence diagram of the mobile terminal system according to the third embodiment;
FIG. 9 is a configuration diagram of a mobile communication system according to a fourth embodiment of the present invention.
FIG. 10 is a basic operation sequence diagram of the mobile communication system according to the fourth embodiment.
[Explanation of symbols]
100, 400, 600, 900 mobile communication system
101, 603, 902 mobile terminal
102 Source terminal
103 Cellular Network
104 IP network
107 call control server
108, 601 Location management server
109, 602, 901 Terminal management server
301 Authentication server
903 Location information allocator
904 Location information acquisition failure notification unit
905 User notification section

Claims (23)

A location management server that is arranged on a wireless network using a wireless system without a paging function and manages location information of a mobile terminal performing communication using a cellular network using the wireless network and cellular radio,
Paging request means for requesting paging of the mobile terminal to a terminal management server having a function of paging the mobile terminal using the cellular network, and obtaining location information on the wireless network paged by the terminal management server And a position information receiving means for receiving the position information sent from the mobile terminal. The location management server according to claim 1, wherein the location management server receives the location information of the mobile terminal via the wireless network. The location management server according to claim 1, wherein the location information of the mobile terminal is received via the cellular network. When a request for paging a mobile terminal that performs communication using a cellular network using the wireless network and cellular radio is received from a position management server arranged on a wireless network using a wireless system without a paging function, Paging processing means for paging the mobile terminal using the cellular network; and receiving the location information transmitted from the mobile terminal that has been paged and has acquired location information on the wireless network via the cellular network. A terminal management server comprising: a position information receiving unit; and a position information notifying unit that notifies the position management server of the received position information. Paging receiving means for receiving a paging request sent from paging processing means on a cellular network using cellular radio, and a radio network using a radio system having no paging function when receiving the paging request. Wireless connection means for connecting a channel, requesting allocation of position information to the wireless network using the wireless channel, obtaining position information obtaining means, and managing the obtained position information on the wireless network. A mobile terminal comprising: a position information notifying unit that notifies a server. 6. The mobile terminal according to claim 5, wherein the location information is notified to the location management server via the wireless network. 6. The mobile terminal according to claim 5, wherein the location information is notified to the location management server via the cellular network. A location management server according to claim 1 or 2, a terminal management server having a function of paging the mobile terminal using the cellular network, and a mobile terminal according to claim 5 or 6. A mobile communication system, comprising: A mobile communication system comprising: the location management server according to claim 1 or claim 3; the terminal management server according to claim 4; and the mobile terminal according to claim 5 or claim 7. The mobile communication system according to claim 8, further comprising an authentication server that restricts a paging function of the terminal management server according to the mobile terminal. A position management method for managing position information of a mobile terminal performing communication using a cellular network using the wireless network and cellular radio on a wireless network using a wireless system without a paging function,
Requesting a paging of the mobile terminal to a terminal management server having a function of paging the mobile terminal using the cellular network, and obtaining the location information on the wireless network paged by the terminal management server. Receiving the location information sent from the mobile terminal. When a request for paging a mobile terminal that performs communication using a cellular network using the wireless network and cellular radio is received from a position management server arranged on a wireless network using a wireless system without a paging function, Paging the mobile terminal using the cellular network, and receiving the location information transmitted via the cellular network from the mobile terminal that has obtained the paged location information on the wireless network. Notifying the received location information to the location management server. A step of receiving a paging request sent from paging processing means on a cellular network using cellular radio, and, upon receiving the paging request, a radio network using a radio system without a paging function and a radio channel. Connecting, requesting allocation of location information to the wireless network using the wireless channel, acquiring, and notifying the acquired location information to a location management server on the wireless network, A position information notification method, comprising: A mobile terminal that performs communication using the wireless network and the cellular network from a location management server on a wireless network using a wireless system without a paging function to a terminal management server on a cellular network using cellular wireless. Requesting paging, the terminal management server making a paging request to the mobile terminal using the cellular network, and the mobile terminal receiving the paging request and connecting the wireless network to a wireless channel. And, the mobile terminal requests allocation of location information to the wireless network, obtaining, and notifying the location information obtained by the mobile terminal to the location management server on the wireless network, Location management method characterized by comprising: A program that allows a computer on a wireless network using a wireless system without a paging function to manage position information of a mobile terminal performing communication using the wireless network and a cellular network using cellular wireless,
Causing the computer to request paging of the mobile terminal from a terminal management server having a function of paging the mobile terminal using the cellular network; and location information on the wireless network paged by the terminal management server. Receiving the location information sent from the mobile terminal that has obtained the location information. A computer on a cellular network using cellular radio, a mobile terminal performing communication using the radio network and the cellular network from a location management server arranged on a radio network using a radio system without a paging function. Receiving a request to page, and, when receiving the request to page, causing the mobile terminal to make a paging request using the cellular network; and obtaining the location information on the wireless network by paging. Receiving the location information sent from the mobile terminal via the cellular network, and notifying the location management server of the received location information. . Causing a computer to receive a paging request sent from paging processing means on a cellular network using cellular radio, and, when receiving the paging request, a radio network using a radio system without a paging function Connecting the wireless network to the wireless network, requesting the wireless network to allocate location information using the wireless channel, and acquiring the location information, and notifying the location management server on the wireless network of the acquired location information. And a step of causing the program to execute. A computer-readable storage medium storing the program according to claim 15. A cellular location information allocating unit for allocating cellular location information on the cellular network to the mobile terminal when the mobile terminal fails to obtain location information on the wireless network; and The terminal management server according to claim 4, further comprising: a position information notifying unit that notifies the server of the position information. Cellular position information obtaining means for requesting the cellular network to allocate position information on the cellular network when obtaining position information in a wireless network using a wireless system without the paging function fails, and obtaining the obtained position information The mobile terminal according to claim 5, comprising: 6. The system according to claim 5, further comprising: a user notification unit configured to notify a user of an event of receiving a paging request when acquisition of location information in the wireless network fails due to reception of a paging request from the cellular network. Item 8. The mobile terminal according to any one of Items 7. When a request for paging a mobile terminal that performs communication using a cellular network using the wireless network and cellular radio is received from a position management server arranged on a wireless network using a wireless system without a paging function, Paging the mobile terminal using the cellular network; and, if the mobile terminal fails to obtain location information on the wireless network, assigning location information on the cellular network to the mobile terminal. Notifying the assigned location information to the location management server. A mobile terminal that performs communication using the wireless network and the cellular network from a location management server on a wireless network using a wireless system without a paging function to a terminal management server on a cellular network using cellular wireless. Requesting paging, the terminal management server making a paging request to the mobile terminal using the cellular network, and the mobile terminal receiving the paging request and failing to obtain location information in the wireless network. In this case, the mobile terminal requests allocation of location information in the cellular network to the cellular network and obtains the location information, and the mobile terminal acquires the location information in the cellular network acquired on the wireless network. Said location management Location management method, characterized by comprising a step of notifying the over server, the.

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