JP2008118726A - Mobile communication system, communication control method therefor and mobile station used therefor and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a mobile communication system capable of reducing the power consumption of a mobile station, by uniting position registration or paging processing of each radio scheme. <P>SOLUTION: In a mobile station 100 connectable to two kinds of radio schemes, position registration processing executed in a mobile communication system is executed for either of the radio schemes (communication network 101 or 111), thereby saving power of the mobile station 100. Furthermore, the mobile station waits for paging processing under execution in the mobile communication system, only for either of the radio schemes (communication network 101 or 111), thereby achieving its power saving of the mobile station. Still further, upon receiving the paging, the mobile station 100 selects the less expensive of the radio schemes (111 in the figure) to execute connection request of a radio line, authentication processing or U-plane conduction, such as sound/voice and data. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a mobile communication system, a communication control method thereof, a mobile station and a program used therefor, and more particularly to an improvement of a mobile communication system including a mobile station connectable to a plurality of types of wireless communication systems.

  In recent years, the number of users in mobile communication systems typified by mobile phones has increased greatly due to their convenience, and various methods have been proposed and put into practical use as communication methods used in mobile communication systems. Yes. In this case, as a mobile station that is a mobile communication terminal, there is a so-called dual-mode mobile station that can handle a plurality of types of communication systems with one mobile station, and is disclosed in Patent Documents 1 to 4.

Japanese Patent Laid-Open No. 11-205217 JP 2004-032337 A JP 2004-297459 A JP 2004-297490 A

  In a conventional mobile communication system using such a dual mode mobile station, in order to set a plurality of radio systems to a standby state, it is necessary to perform location registration for each radio system and intermittently receive paging messages. is there. For this reason, when waiting for a plurality of wireless systems, there is a disadvantage that a large amount of power consumption is required and the standby time is shorter than when waiting for a single wireless system.

  An object of the present invention is to provide a mobile communication system that can reduce power consumption of a mobile station by unifying location registration and pacing processing for each radio system.

  The mobile communication system according to the present invention is a communication system including a plurality of communication networks each having a different radio communication method and a mobile station connectable to the communication networks, wherein the paging reception processing of the mobile station is performed by the plurality of communication networks. It includes means for executing any one of the networks for the communication network.

  Another mobile communication system according to the present invention is a communication system including a plurality of communication networks each having a different wireless communication method and a mobile station connectable to these communication networks, the mobile station location registration processing and paging reception processing. Including means for executing one of the plurality of communication networks on the communication network.

  A communication control method according to the present invention is a communication control method in a communication system including a plurality of communication networks each having a different wireless communication method and a mobile station connectable to these communication networks. The method includes a step of executing reception processing for any one of the plurality of communication networks.

  A mobile station according to the present invention is a mobile station connectable to a plurality of types of wireless communication systems, and means for executing position registration processing and paging reception processing for any one of the plurality of wireless communication systems. It is characterized by including.

  A program according to the present invention is a program for causing a computer to execute an operation of a mobile station that can be connected to a plurality of types of wireless communication systems, and performs location registration processing and paging reception processing in any of the plurality of wireless communication systems. It includes a process to be executed for one.

  According to the present invention, the following effects can be obtained. The first effect is that, in a mobile station that can be connected to two or more types of radio systems, a position registration process and a paging reception process that are normally executed in a mobile communication system are performed by either radio system. Therefore, the power saving of the mobile station can be realized.

  The second effect is that, when paging is received by a mobile station that can be connected to two or more types of wireless systems, a cheaper wireless system is selected and a wireless line connection request, authentication process, voice / data, etc. Since -plane conduction is performed, the cheapest communication method for the caller can be used.

  The third effect is that a certain radio system network consigns the location registration process and the general call process normally performed in the mobile communication system to another radio system network. In this case, it is possible to construct a network with inexpensive equipment without incorporating location registration processing and simultaneous call processing.

  Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a system block diagram of an embodiment of the present invention. In FIG. 1, reference numeral 100 denotes a dual mode mobile station, communication networks 101 and 111 are communication networks of different communication systems, and the communication network 100 is a network having functions for performing location registration and paging processing, which are movement control. The present mobile communication system may be W-CDMA, cdma2000, cdmaOne, GSM, AMPS, PDC, PHS, and the like.

  The communication network 111 may be any network having a wireless control function, and the current W-LAN, cordless telephone, etc., and mobile communication systems such as W-CDMA, cdma2000, cdmaOne, GSM, PDC, PHS, etc. are conceivable. In addition, the communication networks 101 and 111 may be a new radio system that can be considered in the next generation.

  The communication network 101 includes a radio base station 102, an exchange 103, a subscriber information storage device 104, and a gateway (GW) 105. The communication network 111 includes a radio base station 112, a switching center 113, a subscriber information storage device 114, and a gateway (GW) 115. It is assumed that the communication networks 101 and 111 are connected via the gateways 105 and 115 and also connected to another communication network (another network) 121.

  The mobile station 100 in the dual mode state performs location registration processing for the communication network 101 but does not perform location registration processing for the communication network 111. Furthermore, the mobile station 100 is in a state of waiting for paging from the communication network 101, and does not enter the standby state of paging from the communication network 111. After receiving the paging from the communication network 101, the mobile station 100 requests the communication network 111 to connect to a wireless line, performs authentication processing, and transmits / receives user data (voice and data). However, when the mobile station 100 is out of the service area of the communication network 111, the mobile station 100 requests the communication network 101 to connect to a wireless line, and transmits and receives voice and data after authentication processing.

  The communication network 101 performs paging transmission to the mobile station 100 in response to a call request from the communication network 111 based on the contents of location registration that has been performed in advance. If there is a request for wireless line connection from the mobile station 100, the communication network 111 prepares a wireless line, performs authentication processing, and transmits / receives user data. The communication network 111 does not perform paging transmission, but processing other than paging is equivalent to the current processing.

  The mobile station 100 realizes incoming communication using the communication network 111 while reducing power consumption during standby by not performing a position registration process in the communication network 111 and waiting for paging in the dual mode. By allowing incoming calls from multiple communication networks by simply waiting for a paging signal, the mobile station 100 can maintain a standby state with the same power consumption as in the single mode even in the dual mode. Will be able to.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to FIG. In FIG. 1, the mobile station 100 selects a function for performing location registration processing for the communication network 101, a function for waiting for a paging signal from the communication network 101, and a function for selecting an optimum communication network after receiving the paging. The communication network 111 has a function of performing a negotiation such as authentication processing by extending a wireless line and transmitting / receiving user data. Further, the mobile station 100 has a function of setting up a radio line for another communication network when the mobile station 100 is out of the communication network selected after receiving the paging.

  Although the mobile station 100 assumes a dual mode in which two communication networks can be used, it is also possible to use two or more communication networks such as three, four, etc. By having a registration processing function and a paging signal standby function, it is possible to perform standby for a plurality of communication networks.

  Upon receiving the terminal call message transmitted from the communication network 111, the switching center 103 of the communication network 101 inquires the subscriber information storage device 104 about the location registration area of the mobile station, and the radio base station of the confirmed location registration area A function of requesting transmission of paging to 102, and a function of reporting to the communication network 111 that a paging transmission request has been made.

  Further, when the switching center 103 receives a wireless line connection request message after a paging transmission request, the switching center 103 reports the fact that the message has been received to the communication network 111, and a line connection request transmitted from the destination communication network. , A function for preparing a wireless line between the mobile stations 100 and performing authentication processing, and a function for transmitting an end-to-end signaling message and user data. However, the function of the switching center 103 may be in another node in the communication network 101, or the functions may be separated into a plurality of nodes.

  Upon receiving the terminal call message from the other network 121, the exchange 113 of the communication network 111 inquires the subscriber information storage device 114 about the communication network of the call destination of the corresponding terminal, and the terminal call message to the confirmed communication network 101. A function of transmitting a message, a function of preparing a wireless line with the mobile station 100 when receiving a wireless line connection request message and performing an authentication process, a function of transmitting an end to end signaling message and user data, Have

  Further, the switching center 113 has a function of requesting the destination communication network to change the connection destination gateway when receiving the reception notification of the wireless line connection request from the communication network 101. However, the function of the switching center 113 may be in another node in the communication network 111, or the functions may be separated into a plurality of nodes.

  Note that the radio base stations 102 and 112, the subscriber information storage devices 104 and 114, and the gateways 105 and 115 are well known to those skilled in the art and are not directly related to the present invention. Is omitted.

  Next, with respect to the operation of the embodiment of the present invention, the operation in which a call transmitted from the other network 121 is connected to the mobile station 100 using the radio line of the communication network 111 will be described with reference to the sequence diagram of FIG. I will explain.

  In FIG. 2, the other network 121 transmits a terminal call message to the communication network 111 after completing the line preparation and authentication processing (step S100) at the time of outgoing (step S101). In the communication network 111, it is confirmed from the subscriber information to be called that the request destination of the paging process to the terminal is the communication network 101 (step S102), and a terminal call message is transmitted to the communication network 101 (step S103). In the communication network 101, after confirming the location registration area of the mobile station to be called (step S104), a paging message is transmitted to the mobile station 100 in the target area (step S105), and at the same time, a terminal call is executed to the communication network 111. The communication network 101 ends the processing (step S107).

  After receiving the paging message, the mobile station 100 makes a wireless line connection request to the communication network 111, which has a lower communication fee than the communication network 101 (step S108). In this case, the mobile station 100 is assumed to store information indicating communication charges in advance which of the communication network is low, such as in a memory.

  After a response from the communication network 111 (step S109), wireless line preparation and authentication processing are performed between the mobile station 100 and the communication network 111 (step S110). Thereafter, the mobile station 100 notifies the other network 121 that is the call destination that the call is being made (step S111), and the caller terminal confirms the ringing tone (step S113). After the mobile station 100 is off-hook (step S112), a line connection message is transmitted (step S114), and after a line connection response (step S115), an end-to-end connection is established between the mobile station 100 and the calling terminal. Data conduction is performed (step S116).

  Next, since the mobile station 100 is not in the area of the communication network 111, the operation in which a call transmitted from the other network 121 is connected to the mobile station 100 using the wireless line of the communication network 101 is shown in FIG. This will be described using a sequence diagram.

  In FIG. 3, the other network 121 transmits a terminal call message to the communication network 111 after completion of line preparation and authentication processing at the time of outgoing (step S200) (step S201). In the communication network 111, it is confirmed from the subscriber information to be called that the request destination of the paging process to the terminal is the communication network 101 (step S202), and a terminal call message is transmitted to the communication network 101 (step S203). In the communication network 101, after confirming the location registration area of the mobile station to be called (step S204), a paging message is transmitted to the mobile station 100 in the target area (step S205), and at the same time, a terminal call is executed to the communication network 111. This is notified (step S206).

  The operation up to this point is the same as the operation of FIG. 2, but the mobile station 100 transmits a wireless line connection request message to the communication network 111 after receiving the paging message, but the mobile station 100 is not in the area of the communication network 111. There is no response and retransmission is repeated (step S207). After retransmitting the specified number of times, the mobile station 100 abandons the connection with the communication network 111, makes a wireless line connection request to the communication network 101 (step S208), and after a response from the communication network 101 (step S210), Wireless line preparation and authentication processing are performed between the mobile station 100 and the communication network 101 (step S214).

  On the other hand, the communication network 101 notifies the communication network 111 that the wireless line connection request message has been received (step S209), and the communication network 111 requests the other network 121 to change the connection destination gateway (step S211). After the connection destination gateway change request response (step S212), the other network 121 makes a line connection request to the communication network 101 (step S215), and receives the line connection request response (step S216), thereby changing the connection destination.

  There is no order between the processes of steps S214 and S215, and S216, and after S214 and S216 are completed, the mobile station 100 notifies the other network 121 that is the call destination that it is calling (step S217). The ringing tone is confirmed at the calling terminal (step S218). After the mobile station 100 is off-hook (step S219), a line connection message is transmitted (step S220). After a line connection response (step S221), an end-to-end connection is established between the mobile station 100 and the calling terminal. Data conduction is performed (step S222).

  If a call notification message (step S217) is transmitted from the mobile station 100 before the line connection processing (steps S215 and S216) between the communication network 101 and the other network 121 is completed, the communication network 101 notifies the call. The message is stored without being transferred, and the call notification message is transferred after the line connection processing (steps S215 and S216) is completed.

  Next, an operation in which a call transmitted from the communication network 111 is connected to the mobile station 100 using a wireless line of the communication network 111 will be described using the sequence diagram of FIG. In FIG. 4, after the line preparation and authentication processing at the time of outgoing call in the communication network 111 (step S300), it is confirmed from the subscriber information on the receiving side whether or not it is a dual terminal (step S301) and the request destination of the paging processing is communicated. It confirms that it is the network 101 (step S302), and transmits a terminal call message to the communication network 101 (step S303).

  In the communication network 101, after confirming the location registration area of the mobile station to be called (step S304), a paging message is transmitted to the mobile station 100 in the target area (step S305), and at the same time, a terminal call is executed to the communication network 111. The communication network 101 ends the processing (step S307).

  After receiving the paging message, the mobile station 100 makes a wireless line connection request to the communication network 111 whose communication fee is lower than that of the communication network 101 (step S308), and after the response from the communication network 111 (step S309), the mobile station A wireless line is prepared and authenticated between 100 and the communication network 111 (step S110). Thereafter, the mobile station 100 notifies the communication network 111 that is the call destination that the call is being made (step S311), and the caller terminal confirms the ringing tone (step S313).

  After the mobile station 100 is off-hook (step S312), a line connection message is transmitted (step S314). After a line connection response (step S315), an end-to-end connection is established between the mobile station 100 and the calling terminal. Data conduction is performed (step S316).

  If it is confirmed that the terminal is not a dual terminal in the confirmation process of whether or not it is a dual terminal (step S301), since it is not a subscriber of the communication network 111, the incoming call is moved after calling the terminal to the corresponding communication network. There is no need to wait for a wireless line connection request (step S308) from the station 100, and normal incoming call processing is performed.

  Next, an operation in which a call originated from the communication network 101 is connected to the mobile station 100 using a wireless line of the communication network 111 will be described using the sequence diagram of FIG. In FIG. 5, after the line preparation and authentication processing at the time of outgoing call in the communication network 101 (step S400), it is confirmed from the subscriber information on the called side whether or not it is a dual terminal (step S401). A terminal call is made to the network 111 (step S402). If it is not a dual terminal in the confirmation of whether or not it is a dual terminal (step S401), normal incoming call processing by the communication network 101 is performed.

  The communication network 111 that has received the terminal call confirms from the subscriber information that the destination of the paging process is the communication network 101 (step S403), and transmits a terminal call message to the communication network 101 (step S404). In the communication network 101, after confirming the location registration area of the mobile station to be called (step S405), a paging message is transmitted to the mobile station 100 in the target area (step S406), and at the same time, a terminal call is executed to the communication network 111. This is notified (step S407).

  After receiving the paging message, the mobile station 100 makes a wireless line connection request to the communication network 111 whose communication fee is lower than that of the communication network 101 (step S408), and after the response from the communication network 111 (step S409), the mobile station A wireless line is prepared and authenticated between 100 and the communication network 111 (step S410). Thereafter, the mobile station 100 notifies the call destination communication network 101 that it is calling (step S411), and the calling terminal confirms the ringing tone (step S413).

  After the mobile station 100 is off-hook (step S412), a line connection message is transmitted (step S414). After a line connection response (step S415), an end-to-end connection is established between the mobile station 100 and the calling terminal. Data conduction is performed (step S416).

  Here, the terminal call processing is reciprocated in steps S402 and S404, and it seems unnecessary at first glance. However, since it is necessary to confirm to which communication network the communication network 111 is requested to perform the call processing, A round-trip processing of the sequence is required.

  As another embodiment of the present invention, the basic configuration is as described above. FIG. 6 shows a further devised configuration. In FIG. 6, the same parts as those in FIG. 1 are denoted by the same reference numerals. Referring to FIG. 6, the radio base station 112 in another radio system network 111 is directly connected to the switching center 103, and is simplified by omitting other nodes. Although the communication network 101 and the communication network 111 in FIG. 1 are assumed to be different operators, the communication network 101 and the other wireless method network 111 in FIG. 6 are a plurality of wireless methods within the same operator. Is assumed to be used. Reference numeral 116 denotes a control station, the function of which will be described later.

  In the configuration of FIG. 6, an operation in which a call transmitted from the other network 121 is connected to the mobile station 100 using a wireless line of another wireless network 111 will be described with reference to a sequence diagram of FIG. 7.

  Referring to FIG. 7, the other network 121 transmits a terminal call message to the switching center 103 via the gateway 105 after completion of the line preparation and authentication process (step S500) at the time of outgoing (step S501). The switching center 103 confirms the radio system for paging transmission from the subscriber information to be called and the radio base station in the location registration area (step S502), and transmits a terminal call message to the radio base station 102 (step S503). The radio base station 102 transmits a paging message to the mobile station 100 (step S504), and ends the process (step S505).

  After receiving the paging message, the mobile station 100 makes a wireless line connection request to the switching center 103 via the wireless base station 112 whose communication fee is lower than that of the wireless base station 102 (step S506). After the response (step S507), radio channel preparation and authentication processing are performed between the mobile station 100 and the exchange 103 using the radio scheme of the radio base station 112 (step S508). Thereafter, the mobile station 100 notifies the other network 121 that is the call destination that the call is being made (step S509), and the caller terminal confirms the ringing tone (step S511).

  After the mobile station 100 is off-hook (step S510), a line connection message is transmitted (step S512). After a line connection response (step S513), an end-to-end connection is established between the mobile station 100 and the calling terminal. Data conduction is performed (step S514).

  Further, in the embodiment shown in FIG. 1, it is assumed that the service area 300 of the communication network 101 includes service areas 301 and 302 of the communication network 111 as shown in FIG. However, assuming that the area 300 does not include the area 303 as in the relationship between the area 300 and the area 303 in FIG. Registration and paging waiting are required.

  Therefore, a control station 116 shown in FIG. 6 is added, and the control station 116 controls the radio base station 112 to perform location registration according to the installation location of the radio base station 112 and perform paging transmission. It has a function to do for. The radio base station 112 has a function of notifying the mobile station 100 of the presence / absence of location registration and the presence / absence of paging reception according to an instruction from the control station 116.

  Thus, in this example, it is possible to receive an incoming call outside the service area of the communication network 101 as long as it is within the service area of another wireless network 111. On the other hand, even within the service area of another wireless network 111, since it is not desired to receive an incoming call in a quiet place such as a library or a coffee shop, location registration and paging reception can be restricted.

  It is obvious that the operation in each of the above-described embodiments can be configured such that the operation procedure is stored in advance in a recording medium as a program and is read and executed by a computer.

It is a figure which shows an example of the system with which one embodiment of this invention is applied. FIG. 1 is a sequence diagram illustrating an operation in which a call transmitted from another network 121 is connected to the mobile station 100 using a wireless line of the communication network 111. In FIG. 1, since the mobile station 100 is not in the area of the communication network 111, a sequence diagram illustrating an operation in which a call transmitted from the other network 121 is connected to the mobile station 100 using the wireless line of the communication network 101. It is. FIG. 1 is a sequence diagram showing an operation in which a call transmitted from the communication network 111 is connected to the mobile station 100 using a wireless line of the communication network 111 in FIG. FIG. 1 is a sequence diagram showing an operation in which a call transmitted from a communication network 101 is connected to a mobile station 100 using a wireless line of the communication network 111 in FIG. It is a figure which shows an example of the system with which other embodiment of this invention is applied. FIG. 7 is a sequence diagram illustrating an operation in which a call transmitted from another network 121 is connected to the mobile station 100 using a wireless line of another wireless network 111. It is a figure which shows the relationship between the service areas of the communication networks 101 and 111. FIG.

Explanation of symbols

100 mobile station 101, 111, 121 communication network
102,112 radio base station
103,113 exchange
104,114 Subscriber information storage device
105,115 gateway
116 control station

Claims (13)

  A communication system including a plurality of communication networks having different wireless communication methods and mobile stations connectable to the communication networks, wherein the paging reception process of the mobile station is performed by any one of the plurality of communication networks. A mobile communication system comprising means for executing the above.   A communication system including a plurality of communication networks having different wireless communication methods and mobile stations connectable to the communication networks, wherein the mobile station location registration process and paging reception process are performed by any of the plurality of communication networks. A mobile communication system comprising means for executing one communication network.   The mobile station further includes means for selecting a communication network of a cheaper wireless communication method from the plurality of communication networks and performing a wireless line connection process and a user information conduction process at the time of paging reception in the mobile station. The mobile communication system according to claim 2.   4. The mobile communication system according to claim 2, further comprising means for controlling execution of the location registration process and the paging reception process in accordance with an instruction from the communication network in the mobile station.   A communication control method in a communication system including a plurality of communication networks having different wireless communication methods and mobile stations connectable to the communication networks, wherein the mobile station location registration processing and paging reception processing are performed in the plurality of communication networks. A communication control method comprising a step of executing any one of the networks.   The mobile station further includes a step of selecting a cheaper wireless communication system communication network from among the plurality of communication networks and performing a wireless line connection process and a user information conduction process at the time of paging reception at the mobile station. The communication control method according to claim 5.   7. The communication control method according to claim 5, further comprising a step of performing execution control of the location registration process and the paging reception process in the mobile station according to an instruction from the communication network.   A mobile station connectable to a plurality of types of wireless communication systems, comprising: means for executing a location registration process and a paging reception process for any one of the plurality of wireless communication systems Bureau.   9. The apparatus according to claim 8, further comprising means for selecting a cheaper wireless communication method from the plurality of wireless communication methods and performing a wireless line connection process and a user information conduction process at the time of paging reception. Mobile stations.   10. The mobile station according to claim 8, further comprising means for controlling execution of the location registration process and the paging reception process in accordance with an instruction from a communication network.   A program for causing a computer to execute an operation of a mobile station that can be connected to a plurality of types of wireless communication systems, and performing a location registration process and a paging reception process for any one of the plurality of wireless communication systems The program characterized by including the process to perform.   12. The method of claim 11, further comprising: selecting a cheaper wireless communication method from the plurality of wireless communication methods at the time of paging reception, and performing a wireless line connection process and a user information conduction process. Program.   The program according to claim 11 or 12, further comprising processing for performing execution control of the location registration processing and the paging reception processing in accordance with an instruction from a communication network.

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