JP2009232027A - Mobile communication control method, system, and terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance communication quality outside the coverage of a mobile communication terminal, and to continue communication for a longer time. <P>SOLUTION: A terminal A outside the coverage 2 of a radio base station 3 notifies terminals B and C of its own terminal information when short-range radio communication is established between the terminals B and C located in the range of the short-range radio communication. The terminals B and C notify a radio exchange system 1 of area information of the radio base station where the terminals B and C are located and the terminal information of the terminal A, and when a subscriber information accumulation controller 7 is notified of the information, the short-range radio communication is disconnected. When an incoming call to the terminal A is detected at the radio exchange system 1, paging is performed with respect to the coverage of the radio base station 3 recognized by the subscriber information accumulation controller 7. At this time, the terminals B and C relay the paging by the short-range radio communication for calling the terminal A, and establish a communication path by the short-range radio communication when the terminal A is detected. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a mobile communication control method, a mobile communication control system, and a mobile communication terminal for controlling communication of a mobile communication terminal such as a mobile phone.

Conventionally, when a mobile communication terminal such as a mobile phone is located outside the communication area of the base station and cannot communicate, a mobile communication control system that performs communication control so that communication is performed between the mobile communication terminals by other communication means Have been developed (see, for example, Patent Documents 1 to 3).
In a conventional mobile communication control system, when performing communication control of a portable communication terminal located outside a communication area (communication area), a short-range wireless communication means (a short distance between terminals such as Bluetooth) with another terminal Communication means) is used to establish a one-to-one communication path with terminals located within the communication area, and communication between both terminals is enabled.

However, short-range wireless communication between a terminal outside the communication range and a terminal within the communication range is a one-to-one communication, and the distance limit permitted by the short-range wireless communication is exceeded by the movement of both terminals during communication. In such a case, there is a problem that the communication is not continued.
In addition, in order to enable incoming calls, the communication path by the short-range wireless communication means is always established between the terminal outside the communication range and the terminal within the communication range, and the power consumption of both terminals increases. There was a problem.

  Means for enabling communication of a portable communication terminal that has moved out of the communication range have been assumed in the past. However, in a one-to-one short-distance wireless communication means, the movement of the portable communication terminal assuming movement is not possible. When the mobile communication terminal is restricted and moves outside the communication range, there is a problem that it is difficult to continue communication with high communication quality.

On the other hand, in Patent Document 1, when the owner of a mobile phone is outside the radio wave area of the mobile phone such as an underground shopping center or outside the mobile phone service area, the relay terminal sends the mobile phone received from the service center of the mobile phone network. Is received from the relay management device, and the mobile phone is notified of the incoming call via short-range wireless communication, thereby enabling a call.
However, in the invention described in Patent Document 1, when the mobile terminal moves out of the communication range, the relay service terminal exists periodically (every minute) in the relay service area of the transfer telephone via the short-range wireless communication line. However, since the mobile terminal capable of short-range wireless communication is searched, there is a problem that the power consumption of the relay terminal increases.

  Further, in the invention described in Patent Document 1, when an incoming call is received at a mobile terminal that matches the stored terminal information, paging is performed based on the area information, and the terminal information is transmitted to a mobile terminal capable of short-range wireless communication. When the mobile terminal that has moved out of the communication range detects paging, the short-range wireless communication is established in response to the paging and the incoming call is processed. Since one-to-one short-distance communication is performed, there is a possibility that an incoming call may not be possible when moving during paging, and a handover during communication becomes difficult.

Japanese Patent Laid-Open No. 2003-244772 JP 2003-47064 A JP-A-2005-204213

An object of the present invention is to further improve the communication quality of a portable communication terminal outside the communication range and to enable continuous communication for a longer time.
Another object of the present invention is to suppress power consumption during standby for communication outside the communication area when the portable communication terminal moves out of the communication area.

According to the present invention, in the mobile communication control method for controlling communication of a portable communication terminal that performs wireless communication via a wireless base station, the first portable communication terminal located outside the communication area of the wireless base station Short-range wireless communication is performed simultaneously with a plurality of other portable communication terminals located within the communication range of the station, and its own terminal information is notified to the other plurality of portable communication terminals. The mobile communication terminal transmits the area information of the radio base station in which the mobile communication terminal is located and the terminal information notified from the first mobile communication terminal to the subscriber information storage control means. A control method is provided.

  The first portable communication terminal located outside the communication area of the wireless base station performs short-range wireless communication with a plurality of other portable communication terminals located within the communication area of the wireless base station at the same time. The information is notified to the plurality of other portable communication terminals, and the other plurality of portable communication terminals are notified of the area information of the radio base station in which the other portable communication terminals are located and the first portable communication terminal. Information is transmitted to the subscriber information storage control means.

  Here, the plurality of other portable communication terminals notify the wireless switching system of the area information of the wireless base station in which the other portable communication terminals are located and the terminal information notified from the first portable communication terminal. When the information is notified to the subscriber information storage control means via the system, the short-range wireless communication may be disconnected.

  Further, when there is an incoming call to the first portable communication terminal, the first portable communication terminal is in the vicinity based on the information of the first portable communication terminal stored in the subscriber information storage control means. A portable communication terminal that performs paging on the area of the wireless base station that is located and is capable of short-range wireless communication with the first portable communication terminal located within the communication range of the wireless base station is capable of short-range wireless communication. Relaying paging to the first portable communication terminal, and when the first portable communication terminal detects paging by short-range wireless communication, the first portable communication terminal performs short-range wireless communication to the portable communication terminal that has transmitted the paging. A short-range wireless communication may be established by performing a paging response, and an incoming call to the first portable communication terminal may be enabled.

  In addition, the first portable communication terminal is in close proximity to a new portable communication terminal when the communication quality with other portable communication terminals located in the communication area where communication is being performed by short-range wireless communication deteriorates. After establishing the distance wireless communication, switching between the portable communication terminal currently communicating with the wireless switching system and the communication path of the wireless switching system, and the communication path of the new portable communication terminal and the wireless switching system And when the switching of the communication path is completed, the wireless switching system communicates between the first portable communication terminal and the other portable communication terminal, and the other portable communication terminal and the You may comprise so that the communication path | route of a radio | wireless switching system may be cut | disconnected.

  In addition, the other portable communication terminal that is performing short-range wireless communication with the first portable communication terminal can perform short-range wireless communication that is located in a nearby communication area when it detects a deterioration in communication quality. After establishing a communication path between the portable communication terminal and the first portable communication terminal by short-range wireless communication, the communication path by short-range wireless communication with the first portable communication terminal is disconnected. It may be configured.

  Further, according to the present invention, in a mobile communication control system that controls communication of a portable communication terminal that performs radio communication via a radio base station, when located outside the communication range of the radio base station, the communication range of the radio base station A first portable communication terminal that simultaneously performs short-range wireless communication with a plurality of other portable communication terminals located at the same location and notifies the plurality of other portable communication terminals of its own terminal information; And a plurality of other portable communication terminals that transmit the terminal information notified from the first portable communication terminal to the subscriber information storage control means. A featured mobile communication control system is provided.

  When the first portable communication terminal is located outside the communication range of the wireless base station, the first portable communication terminal performs short-range wireless communication simultaneously with a plurality of other portable communication terminals located within the communication range of the wireless base station, Is notified to a plurality of other portable communication terminals. The other terminals transmit the area information of the radio base station in which they are located and the terminal information notified from the first portable communication terminal to the subscriber information accumulation control means.

  Here, the plurality of other portable communication terminals notify the wireless switching system of the area information of the radio base station in which the other portable communication terminals are located and the terminal information notified from the first portable communication terminal, and When the information is notified to the subscriber information accumulation control means via the exchange system, the short-range wireless communication may be disconnected.

  In addition, when there is an incoming call to the first portable communication terminal, the wireless switching system is configured to use the first portable communication terminal based on the information of the first portable communication terminal stored in the subscriber information accumulation control unit. Another portable communication terminal that performs paging on the area of the wireless base station in which the type communication terminal is located nearby and is located within the communication range of the wireless base station and is capable of short-range wireless communication with the first portable communication terminal Relays paging to the first portable communication terminal by short-range wireless communication, and when the first portable communication terminal detects paging by short-range wireless communication, the first portable communication terminal transmits to the portable communication terminal that has transmitted the paging. Alternatively, a short-range wireless communication may be established by performing a paging response by the short-range wireless communication, and an incoming call to the first portable communication terminal may be enabled.

  In addition, the first portable communication terminal is in close proximity to a new portable communication terminal when the communication quality with other portable communication terminals located in the communication area where communication is being performed by short-range wireless communication deteriorates. After establishing the distance wireless communication, switching between the portable communication terminal currently communicating with the wireless switching system and the communication path of the wireless switching system, and the communication path of the new portable communication terminal and the wireless switching system And when the switching of the communication path is completed, the wireless switching system communicates between the first portable communication terminal and the other portable communication terminal, and the other portable communication terminal. You may comprise so that the communication path | route of the said radio | wireless switching system may be cut | disconnected.

  In addition, the other portable communication terminal that is performing short-range wireless communication with the first portable communication terminal can perform short-range wireless communication that is located in a nearby communication area when it detects a deterioration in communication quality. After establishing a communication path between the portable communication terminal and the first portable communication terminal by short-range wireless communication, the communication path by short-range wireless communication with the first portable communication terminal is disconnected. It may be configured.

In addition, according to the present invention, in a portable communication terminal that has a function of performing short-range wireless communication with another portable communication terminal and performs wireless communication via the wireless base station, the portable communication terminal is located outside the communication range of the wireless base station. If located, perform short-range wireless communication with a plurality of other portable communication terminals located within the communication range of the radio base station at the same time, and notify the other portable communication terminals of its own terminal information. A portable communication terminal is provided.
When the wireless base station is located outside the communication area of the wireless base station, short-range wireless communication is simultaneously performed with a plurality of other portable communication terminals located within the communication area of the wireless base station, and its own terminal information is transmitted to the other plurality of portable communication terminals. To the portable communication terminal.

Here, when paging by short-range wireless communication is detected, a short-range wireless communication is established by performing a paging response by short-range wireless communication to the portable communication terminal that has transmitted the paging. You may comprise so that the incoming_call | mail_call with respect to self via it is possible.
In addition, if communication quality with other portable communication terminals that are located within the communication range of the wireless base station and are communicating via short-range wireless communication deteriorates, short-range wireless communication is established with a new portable communication terminal. After that, the wireless switching system is requested to switch between the portable communication terminal currently communicating with the communication path of the wireless switching system, and the new portable communication terminal and the communication path of the wireless switching system. It may be configured.

In addition, according to the present invention, in a portable communication terminal that has a function of performing short-range wireless communication with another portable communication terminal and performs wireless communication via a wireless base station, the wireless base station in which the mobile communication terminal is located The area information and the terminal information notified from other portable communication terminals are notified to the wireless switching system, and when the information is notified to the subscriber information storage control means via the wireless switching system, the other information Provided is a portable communication terminal characterized in that short-range wireless communication with the portable communication terminal is disconnected.
Notifies the wireless switching system of the area information of the wireless base station where it is located and the terminal information notified from other portable communication terminals, and notifies the subscriber information storage control means of these information via the wireless switching system When this is done, short-range wireless communication with the other portable communication terminal is disconnected.

Here, it may be configured to be located within the communication range of the wireless base station and relay paging to other portable communication terminals by short-range wireless communication.
In addition, when a deterioration in communication quality is detected while performing short-range wireless communication with the other portable communication terminal, a new portable communication terminal that is located in the communication area in the vicinity and can perform short-range wireless communication; After establishing a communication path with the other portable communication terminal by short-range wireless communication, the communication path by the short-range wireless communication with the other portable communication terminal may be disconnected. .

According to the mobile communication control method and the mobile communication control system according to the present invention, it is possible to further improve the communication quality outside the communication range of the portable communication terminal and to continue the communication for a longer time. In addition, when the portable communication terminal moves out of the communication range, it is possible to suppress power consumption when waiting for communication outside the communication range.
Moreover, according to the present invention, it is possible to provide a portable communication terminal suitable for constructing a mobile communication control method and a mobile communication control system.

FIG. 1 is a block diagram of a mobile communication control system suitable for the mobile communication control method according to the embodiment of the present invention. Although not shown in FIG. 1, it is assumed that the wireless switching system 1 is also connected to other wireless switching systems and core networks, and is also interconnected with a fixed communication network.
The subscriber information storage control unit 7 as the subscriber information storage control means is connected to the wireless switching system 1, but is actually connected via a core network connected to the wireless switching system 1. It is assumed that the location information of the portable communication terminal A (6) located outside the communication area (communication area 2) can be stored.

The radio base station 3 is connected to the radio switching system 1. In FIG. 1, for simplicity, only one radio base station is described. Therefore, the range within the communication range of the radio switching system 1 is assumed to be only inside the communication area 2.
The mobile communication terminal B (4), the mobile communication terminal C (5), the mobile communication terminal X (8), and the mobile communication terminal A (6) outside the communication range are respectively connected to the wireless base station 3 In addition to having a function as a mobile phone for performing communication via a wireless LAN, short-range wireless communication means (for example, means for enabling short-range communication between terminals such as Bluetooth) is provided. A portable communication terminal that can be used between terminals.

  Although the portable communication terminals 4 to 6 will be described as examples of cellular phones, PHS (Personal Handyphone System), PDA (Personal Data Assistance, Personal Digital Assistants), PC (Personal Computer) Various portable communication terminals having a communication function such as the above can be used. The wireless switching system 1 and the subscriber information accumulation control unit 7 can each be configured by a computer and a program executed by the computer.

  The outline of the present embodiment will be described with reference to FIG. 1. A terminal A (6) is connected to a wireless switching system 1 (the wireless switching system shown in FIG. 1 is connected to other wireless switching systems and fixed communication networks). (In FIG. 1, the terminal A located outside the communication area 2 is regarded as outside the communication area of the wireless switching system 1). When moving outside, the terminal B (4) and the terminal C (5) are located within a communication range with the terminal A and can be communicated by the short-range wireless communication means (two in the example of FIG. 1) However, it is also possible to perform short-range wireless communication with 3 or more terminals.)

  When short-range wireless communication is established between the terminal A and other terminals B and C located in the communication area, the terminal A notifies the terminal B and terminal C of its own terminal information. Terminal B and terminal C notify the wireless switching system 1 side of the area information of the wireless base station in which the terminal B and terminal C are located and the terminal information notified from the terminal A, and the information is transmitted via the wireless switching system 1. When notified to the subscriber information accumulation control unit 7, the short-range wireless communication can be disconnected.

  The wireless switching system 1 side determines, by the operation equivalent to the location registration of the existing mobile phone system, by the accumulation of information, the terminal A is located outside the service area adjacent to the communication area of the wireless base station. This makes it possible to recognize, and it is not necessary to continue short-range wireless communication for incoming calls as in the prior art, and wasteful power consumption can be suppressed.

  If the terminals in short-range wireless communication move with each other and the quality of short-range wireless communication with the terminal A deteriorates, a new terminal capable of short-range wireless communication with the terminal A is searched for. If it is found, it is possible to establish a communication path by short-range wireless communication with a new terminal, and to continue communication by enabling the same operation as a handover of an existing mobile phone system. It is composed.

When the incoming call to the terminal A is detected by the wireless switching system 1, paging (existing mobile phone) is performed on the communication area of the wireless base station 3 recognized by the subscriber information storage control unit 7. It is possible to implement a means for calling the telephone system). At this time, the terminal B and the terminal C that are located in the communication area and are capable of short-range wireless communication with other terminals can perform paging relay in short-range wireless communication to call the terminal A, and When the terminal A is found, a communication path by short-range wireless communication is established to enable communication.
2 to 5 are sequence charts showing a processing method according to the present embodiment.

Hereinafter, embodiments of the present invention will be described in detail.
At the time of transmission from the terminal A (6) in FIG. 1, a communication path is established using known communication means such as Bluetooth. In this embodiment, a terminal that communicates with the terminal A by short-range wireless communication. Is not limited to one-to-one, but short-range wireless communication between one-to-multiple (two terminals of terminal B and terminal C in FIG. 1 are also possible between three or more terminals). Make it possible.

  Terminal A outside the communication area searches for a terminal capable of short-range wireless communication located within the communication area using the short-range wireless communication means when establishing short-range wireless communication at the time of outgoing call. At this time, when a plurality of terminals are found, the terminal A can establish short-range wireless communication simultaneously with the plurality of terminals. A known technique is used for the transmission process after the short-range wireless communication is established.

  When the terminal A moves out of the communication area, the terminal A searches for a terminal that is located within the communication area and can perform near field communication (step S2-1) as shown in the sequence of FIG. B and terminal C correspond to each other), short-range wireless communication is established (step S2-2), and the terminal A locates its own terminal information (information representing the terminal A itself) within the communication range. Terminal B and terminal C are notified (step S2-3). In FIG. 2, terminal A first establishes a short-range wireless communication path with terminal B and notifies its terminal information to terminal B, and then establishes a short-range wireless communication path with terminal C and establishes its own communication path. The example which notifies the terminal information to the terminal C is shown.

  Thereafter, the terminal B and the terminal C establish a communication path with the wireless switching system 1 side (step S2-4), the notified terminal information of the terminal A, and the wireless at which the terminal B and the terminal C are located at that time After notifying the base station area information to the wireless switching system side (step S2-5), the short-distance silent communication with the terminal A and the communication path between the wireless switching system side are disconnected (steps S2-7, S2). -8).

  The wireless switching system 1 holds the information notified from the terminals B and C in the subscriber information accumulation control unit 7 (step S2-6). The terminal A located outside the communication area periodically informs the wireless switching system 1 side of which wireless base station is located outside the area adjacent to the wireless base station by performing this series of processing. Thus, it is possible to perform the same operation as the location registration realized in the existing mobile phone system or the like.

  In FIG. 3, when the incoming call to the terminal A is detected on the wireless switching system 1 side (step S3-1), the location information of the terminal A held in advance as described above is stored in the subscriber information storage control unit 7. Confirmation (step S3-2), paging is performed on the area of the radio base station in which the terminal A is located (step S3-3).

  At that time, terminals located within the communication range of the radio base station and capable of short-range wireless communication (in FIG. 1, terminals B and C correspond to the terminal A) relay paging to the terminal A through short-range wireless communication. (Step S3-4). When the terminal A detects paging by short-range wireless communication, the terminal A sends a paging response by short-range wireless communication to the terminal that has transmitted the paging (step S3-5). It establishes (step S3-6) and enables the terminal A to receive a call (step S3-7).

  In FIG. 4, the terminal A is in communication via short-range wireless communication (the same applies to both outgoing and incoming calls), and is connected to the terminals B and C located in the communication area in communication using short-range wireless communication. When the communication quality deteriorates because the distance between the terminals changes due to movement of both terminals (step S4-1), the terminal A newly searches for a terminal capable of short-range wireless communication (step S4-2). ) And establish short-range wireless communication with the new terminal (step S4-3).

After the new short-range wireless communication is established, the terminal A communicates the current communication path of the terminal B and terminal C with the wireless switching system 1 and the new terminal X with the wireless switching to the wireless communication system 1 side. The switching of the communication path of the system 1 is requested (step S4-4).
When the switching of the communication path is completed on the wireless switching system 1 side (step S4-5), the terminal A and the terminal B are notified by notifying (4-6) that the switching of the communication path to the terminal A is completed. The communication path between the terminal C and the communication path on the wireless switching system 1 side with the terminal B and terminal C is disconnected (steps S4-7 and S4-8). In this way, an operation equivalent to a handover realized by an existing mobile phone system or the like can be performed even in short-range wireless communication.

  Further, in FIG. 5, when the deterioration of communication quality is detected also in the counterpart terminal B and terminal C that are performing near field communication with the terminal A (step S5-1), they are located in the vicinity within the communication range. A terminal capable of short-range wireless communication is searched (step S5-2), and a communication path is established by short-range wireless communication for the new terminal X found (step S5-3).

  After the new short-range wireless communication is established, terminal B and terminal C prompt the new terminal X to assist in performing short-range wireless communication with terminal A (step S5-4). The short-range wireless communication is established between the terminal X and the terminal A (steps S5-5 and S5-6), and when the assist is completed, the terminal B and the terminal C that have requested the assistance are notified of the completion. (Step S5-7).

  After the assist is completed, the communication path between the terminal B and the terminal C and the new terminal X that requested the assist is disconnected (step S5-8), and the current terminal B and the terminal C and the wireless switching system 1 A request is made to switch the communication path and the communication path between the new terminal X and the wireless switching system 1 (step S5-9).

When the switching of the communication path is completed on the wireless switching system 1 side (step S5-10), it is notified that the switching of the communication path for the new terminal X is completed (step S5-11). The communication path between the terminal B and the terminal C and the communication path between the terminal B and the terminal C and the wireless switching system 1 are disconnected (steps S5-12 and S5-13). In this way, it is possible to perform an operation equivalent to a handover by assist on the terminal side that relays between a terminal outside the communication range and the wireless switching system.
It should be noted that either the operation of FIG. 4 or the operation of FIG. 5 is performed with priority, so that when the handover is not performed well, the other operation is performed.

  As described above, according to the mobility control method and the mobile communication control system according to the present embodiment, the terminal A outside the communication area 2 of the wireless base station 3 is located at a distance where communication by short-range wireless communication is possible. When the communication by the short-range wireless communication is established between the terminal B and the terminal C, the terminal information of itself is notified to the terminals B and C. When the terminals B and C notify the radio switching system 1 of the area information of the radio base station where the terminals B and C are located and the terminal information of the terminal A are notified to the subscriber information storage control unit 7, Distance wireless communication is disconnected. When an incoming call to the terminal A is detected by the wireless switching system 1, paging is performed on the communication area of the wireless base station 3 recognized by the subscriber information accumulation control unit 7. At this time, the terminals B and C relay paging by short-range wireless communication to call the terminal A, and when the terminal A is found, establish a communication path by short-range wireless communication and enable communication. .

Therefore, it is possible to further improve the communication quality outside the communication range of the portable communication terminal and to continue communication for a longer time. In addition, when the portable communication terminal moves out of the communication range, it is possible to suppress power consumption when waiting for communication outside the communication range.
In addition, by establishing short-range wireless communication between a portable communication terminal that is out of the communication range and a plurality of portable communication terminals that are located within the communication range, communication quality outside the communication range can be improved compared to conventional technologies. In addition, the communication can be continued for a longer time.

In addition, when a portable communication terminal moves out of the communication range, it is not necessary to always establish short-range wireless communication with a terminal located within the communication range, and regular and temporary short-range wireless communication is established. By doing so, it becomes possible to reduce the power consumption when waiting for communication outside the communication range.
Further, mobile communication terminals existing outside the communication range can be controlled for mobile communication via other portable communication terminals.

In addition, according to the embodiment of the present invention, it is possible to provide a wireless switching system and a portable communication terminal suitable for constructing the mobile communication control method and mobile communication control system.
Further, according to the present invention, it is possible to provide a program for constructing the wireless switching system using a computer.

In the above embodiment, it is assumed that short-range wireless communication is established with a portable communication terminal outside the communication range and communication is continued, but the portable communication terminal outside the communication range returns to the communication range. When the portable communication terminal itself determines that communication with the wireless base station can be restored, the short-range wireless communication being performed between the portable communication terminals is disconnected, and the normal wireless base station It is also possible to switch to communication between stations.
In addition, when a portable communication terminal that is in communication within the communication area moves out of the communication area, the communication between the wireless base stations is switched to short-range wireless communication that can be realized in this embodiment, It is also possible to continue communication.

  In addition, according to the embodiment, since the search is performed only when the incoming call operation occurs (only when it is necessary to make an incoming call), not the periodic search, the power consumption on the relay terminal side is reduced. It becomes possible to suppress.

  The relay terminal is not specified (unspecified majority), and the paging area is fixed. Even if the relay terminal in the area is one unspecified terminal, it can be connected between multiple unspecified terminals. But it is configured to communicate. In this way, by performing short-range communication with a plurality of one-to-one unspecified numbers, it is more likely that a call can be received even when moving during paging, and handover during communication is also possible.

  In the above embodiment, a short-range wireless communication means between portable communication terminals is assumed as an example of a wireless switching system, but a terminal connected to a fixed communication network also has a short-range wireless communication means. If it is, the short-range wireless communication can be similarly performed between the fixed terminal and the portable communication terminal.

In the embodiment of the present invention, it is assumed that communication means between terminals is short-range wireless communication means. However, a wireless LAN (Local Area Network), WiFi (Wireless Fidelity), WiMAX (WiMAX) having a longer communication distance is assumed. By applying wireless communication means such as World Interoperability for Microwave Access, it is possible to expand the communication area even outside the communication range.
Further, by making it possible to implement the embodiment of the present invention between communication carriers, it is possible to expand a wider communication area without depending on the communication carriers.

  In order to realize the embodiment of the present invention, the portable communication terminal is located in the communication area and includes the short-range wireless communication means of the present embodiment, and is short-range wireless with other portable communication terminals. For users of portable communication terminals that have permitted communication, the usage fee is discounted according to the frequency of communication with portable communication terminals outside the communication range in short-range wireless communication, and portable communication terminals outside the communication range For such users, a billing system may be considered in which the specification fee is increased according to the frequency of communication by short-range wireless communication outside the communication range.

  Mobile communication control method, mobile communication control system for controlling communication of portable communication terminal having wireless communication function, including mobile phone, PHS, PDA, portable personal computer, wireless switching system used for this, portable communication terminal Is available.

1 is a block diagram of a mobile communication control system suitable for a mobile communication control method according to an embodiment of the present invention. It is a sequence chart which shows the process in embodiment of this invention. It is a sequence chart which shows the process in embodiment of this invention. It is a sequence chart which shows the process in embodiment of this invention. It is a sequence chart which shows the process in embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Wireless switching system 2 ... Wireless base station communication area 3 ... Wireless base station 4-6, 8 ... Portable communication terminal 7 ... Subscriber information storage control part

Claims (16)

In a mobile communication control method for controlling communication of a portable communication terminal that performs wireless communication via a wireless base station,
The first portable communication terminal located outside the communication area of the wireless base station performs short-range wireless communication with a plurality of other portable communication terminals located within the communication area of the wireless base station at the same time. Inform the other plurality of portable communication terminals of information,
The plurality of other portable communication terminals transmit the area information of the radio base station in which the other portable communication terminals are located and the terminal information notified from the first portable communication terminal to the subscriber information accumulation control means. A mobile communication control method.   The other plurality of portable communication terminals notify the wireless switching system of the area information of the wireless base station in which the other portable communication terminals are located and the terminal information notified from the first portable communication terminal, via the wireless switching system. 2. The mobile communication control method according to claim 1, wherein when the information is notified to the subscriber information accumulation control means, the short-range wireless communication is disconnected. When there is an incoming call to the first portable communication terminal, the first portable communication terminal is located in the vicinity based on the information of the first portable communication terminal stored in the subscriber information storage control means Paging the radio base station area,
A portable communication terminal located within a communication area of the wireless base station and capable of short-range wireless communication with the first portable communication terminal relays paging to the first portable communication terminal by short-range wireless communication,
When the first portable communication terminal detects paging by short-range wireless communication, the first portable communication terminal establishes short-range wireless communication by performing a paging response by short-range wireless communication to the portable communication terminal that has transmitted paging. The mobile communication control method according to claim 1, wherein an incoming call to the first portable communication terminal is enabled. When the communication quality of the first portable communication terminal is deteriorated with another portable communication terminal located in a communication area that is communicating by short-range wireless communication, the first portable communication terminal is short-range wireless with a new portable communication terminal. After establishing communication, the wireless switching system is requested to switch between the portable communication terminal currently communicating with the communication path of the wireless switching system, and the new portable communication terminal and the communication path of the wireless switching system. And
When the switching of the communication path is completed, the wireless switching system communicates between the first portable communication terminal and the other portable communication terminal, and between the other portable communication terminal and the wireless switching system. The mobile communication control method according to any one of claims 1 to 3, wherein the communication path is disconnected.   When the other portable communication terminal that is performing near field communication with the first portable communication terminal detects a deterioration in communication quality, the other portable communication terminal that is capable of performing near field communication that is located in a nearby communication area is detected. The communication path between the communication terminal and the first portable communication terminal is established by short-range wireless communication, and then the communication path by the short-range wireless communication with the first portable communication terminal is disconnected. The mobile communication control method according to any one of claims 1 to 4. In a mobile communication control system that controls communication of a portable communication terminal that performs wireless communication via a wireless base station,
When the wireless base station is located outside the communication area of the wireless base station, short-range wireless communication is simultaneously performed with a plurality of other portable communication terminals located within the communication area of the wireless base station, and its own terminal information is transmitted to the other plurality of portable communication terminals. A first portable communication terminal that notifies the portable communication terminal of
A plurality of other portable communication terminals that transmit the area information of the radio base station in which it is located and the terminal information notified from the first portable communication terminal to the subscriber information storage control means; A mobile communication control system.   The other plurality of portable communication terminals notify the wireless switching system of the area information of the wireless base station in which the other portable communication terminals are located and the terminal information notified from the first portable communication terminal, via the wireless switching system 7. The mobile communication control system according to claim 6, wherein when the information is notified to the subscriber information accumulation control means, the short-range wireless communication is disconnected. When there is an incoming call to the first portable communication terminal, the wireless switching system is configured to use the first portable communication terminal based on the information of the first portable communication terminal stored in the subscriber information accumulation control unit. Paging the area of the radio base station where the terminal is located nearby,
Another portable communication terminal located within the communication range of the wireless base station and capable of short-range wireless communication with the first portable communication terminal relays paging to the first portable communication terminal by short-range wireless communication. ,
When the first portable communication terminal detects paging by short-range wireless communication, the first portable communication terminal establishes short-range wireless communication by performing a paging response by short-range wireless communication to the portable communication terminal that has transmitted paging. The mobile communication control system according to claim 6 or 7, wherein an incoming call to the first portable communication terminal is enabled. When the communication quality of the first portable communication terminal is deteriorated with another portable communication terminal located in a communication area that is communicating by short-range wireless communication, the first portable communication terminal is short-range wireless with a new portable communication terminal. After establishing communication, the wireless switching system is requested to switch between the portable communication terminal currently communicating with the communication path of the wireless switching system, and the new portable communication terminal and the communication path of the wireless switching system. And
The wireless switching system includes a communication path between the first portable communication terminal and the other portable communication terminal, and the other portable communication terminal and the wireless switching system when switching of the communication path is completed. The mobile communication control system according to any one of claims 6 to 8, wherein the communication path is disconnected.   When the other portable communication terminal that is performing near field communication with the first portable communication terminal detects a deterioration in communication quality, the other portable communication terminal that is capable of performing near field communication that is located in a nearby communication area is detected. The communication path between the communication terminal and the first portable communication terminal is established by short-range wireless communication, and then the communication path by the short-range wireless communication with the first portable communication terminal is disconnected. The mobile communication control system according to any one of claims 6 to 9. In a portable communication terminal that has a function of performing short-range wireless communication with another portable communication terminal and performs wireless communication via a wireless base station,
When the wireless base station is located outside the communication area of the wireless base station, short-range wireless communication is simultaneously performed with a plurality of other portable communication terminals located within the communication area of the wireless base station, and its own terminal information is transmitted to the other plurality of portable communication terminals. The portable communication terminal is notified to the portable communication terminal.   When paging by short-range wireless communication is detected, short-range wireless communication is established by performing a paging response by short-range wireless communication with respect to the portable communication terminal that has transmitted the paging. 2. The portable communication terminal according to claim 1, wherein an incoming call can be made to itself.   When communication quality with other portable communication terminals that are located within the communication range of the wireless base station and are communicating with short-range wireless communication deteriorates, after establishing short-range wireless communication with a new portable communication terminal, Requesting a wireless switching system to switch between a portable communication terminal that is currently communicating with the communication path of the wireless switching system and a communication path of the new portable communication terminal and the wireless switching system; The portable communication terminal according to claim 11 or 12. In a portable communication terminal that has a function of performing short-range wireless communication with another portable communication terminal and performs wireless communication via a wireless base station,
Notifies the wireless switching system of the area information of the wireless base station where it is located and the terminal information notified from other portable communication terminals, and notifies the subscriber information storage control means of these information via the wireless switching system When this is done, the short-range wireless communication with the other portable communication terminal is disconnected.   15. The portable communication terminal according to claim 14, wherein the portable communication terminal is located within a communication area of the wireless base station and relays paging to another portable communication terminal by short-range wireless communication.   When a communication quality deterioration is detected while performing short-range wireless communication with the other portable communication terminal, a new portable communication terminal that is located in a nearby communication range and can perform short-range wireless communication, and the other 15. A communication path by short-range wireless communication with another portable communication terminal is disconnected after establishing a communication path with the other portable communication terminal by short-range wireless communication. 15. The portable communication terminal according to 15.

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