JP2002345009A - Position information managing method, calling method for portable communication terminal, position information managing device, repeater, radio base station and mobile communication network - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently perform processing in the position registration and call of a portable communication terminal. SOLUTION: This method uses a repeater 21, which can pass a plurality of sectors 41 formed from radio base stations 11 while being accompanied with at least one portable communication terminal 7, and a location register 13 for storing located area information showing an area, where each of portable communication terminals 7 is located. The repeater 21 transmits a repeater position registration request containing repeater identification information IDt for identifying the relevant repeater 21 and sector identification information IDs showing the sector 41, where the relevant repeater 21 is located. The location register 13, which receives this repeater position registration request, stores the repeater identification information IDt of the relevant repeater 21 as located area information of the portable communication terminal 7 moving with the repeater 21 and correspondently stores the relevant repeater identification information IDt and the sector identification information IDs of the sector 41, where the relevant repeater 21 is located.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for managing information indicating an area where a portable communication terminal is located, a method for calling a portable communication terminal by using the method, and a method for calling the method. The present invention relates to a position information management device, a relay device, a wireless base station, and a mobile communication network used.

[0002]

2. Description of the Related Art As is well known, in a mobile communication service, each portable communication terminal is stored in a storage device (hereinafter referred to as a "location register") so that a portable communication terminal such as a portable telephone can receive a call anywhere. Generally, the position of the terminal is registered. Specifically, the mobile communication service providing area is divided into a plurality of location registration areas, and when the mobile communication terminal moves from one location registration area to another location registration area, the location registration area after movement is specified. The location registration request is transmitted from the mobile communication terminal to the network. Then, in response to the location registration request, the location registration content of each mobile communication terminal stored in the location register is sequentially updated.

Here, a location registration area, which is a unit of location registration of a mobile communication terminal, is generally composed of a plurality of cells each defined by a radio base station. The reason why the location registration is performed in units of a relatively large area is as follows. That is, for example, if location registration is performed in units of cells having a relatively narrow range,
Each time the mobile communication terminal moves across the cell, the location registration process must be performed frequently, which significantly increases the network communication traffic and the load on the location register for performing the location registration process. It is.

[0004]

However, when the location registration of the portable communication terminal is performed in units of the location registration area, if an incoming call request is issued to the portable communication terminal located in any of the location registration areas, the location is not registered. It has to send an incoming call request to all wireless base stations belonging to the registration area. Further, each radio base station that has received the incoming call request transmits the incoming call request wirelessly over the entire area of the cell defined by the radio base station.
As described above, if the mobile communication terminal to be called is a wireless base station in the location registration area where the mobile communication terminal to be called is located, the mobile communication terminal to be called is not actually located in the cell. Although it is a wireless base station that does not need to transmit the incoming call request, the incoming call request is transmitted, and the incoming call request is transmitted over the entire area of the location registration area. As described above, in the conventional mobile communication system, as a result of adopting the location registration area including a plurality of cells as a unit of location registration, a wide range of communication equipment is used to call one mobile communication terminal. However, it has not always been possible to say that the calling process is performed efficiently.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described circumstances, and provides a position information management method and a portable communication terminal calling method capable of efficiently performing processing relating to position registration and calling of the portable communication terminal. It is another object of the present invention to provide a position information management device, a relay device, a wireless base station, and a mobile communication network for realizing these methods.

[0006]

In order to solve the above problems, the present invention relates to a method in which a plurality of sectors formed by a radio base station are allocated to one sector.
Position information using a relay device capable of passing with the above portable communication terminal, and a position information management device for storing area information indicating an area where the portable communication terminal is located for each of the plurality of portable communication terminals The management method, wherein the relay device transmits a location registration request including relay device identification information for identifying the relay device and sector identification information indicating a sector where the relay device is located, and The position information management device that has received the request stores, based on the position registration request, the relay device identification information of the relay device as the area information of the mobile communication terminal that moves with the relay device, The relay device identification information is stored in association with the sector identification information of the sector in which the relay device is located.

According to this method, the relay device identification information of the relay device is stored as the area information of the portable communication terminal that moves with the relay device, and the relay device identification information and the relay device are located. Since the sector identification information of the sector in question is stored in association with the sector identification information, the area where the mobile communication terminal that moves with the relay device is located is specified in sector units. Furthermore, when the relay device moves across sectors, it is sufficient to update the sector identification information associated with the relay device identification information of the relay device, and it is necessary to update the area information of each portable communication terminal. There is no. For this reason, despite the fact that the location area of the mobile communication terminal is registered in a unit of an extremely narrow range, the communication traffic for the position registration of the mobile communication terminal and the processing load on the position information management device are reduced and the efficiency is reduced. Location registration can be performed automatically.

[0008] Here, the "sector" in the present specification is an area where radio communication is possible with each of a plurality of antennas provided in the radio base station (that is, an area where radio waves from one antenna reach). Means On the other hand, "cell"
Means an area where radio communication with one radio base station is possible (that is, an area where radio waves from one radio base station reach) regardless of which antenna the radio wave is from. I do. Therefore, one "cell" composed of a plurality of "sectors" is defined for one radio base station.

Further, in order to solve the above-mentioned problems, the present invention provides a position information management device that stores, for each of a plurality of portable communication terminals, area information indicating an area where the portable communication terminal is located; A method for calling a mobile communication terminal accommodated in a mobile communication network having a plurality of wireless base stations forming a sector and a plurality of exchanges, wherein the plurality of sectors can be passed together with one or more mobile communication terminals. Relay device transmits a location registration request including relay device identification information for identifying the relay device and sector identification information for identifying a sector in which the relay device is located, and receives the location registration request. The location information management device, based on the location registration request, writes the relay device identification information of the relay device as serving area information of the mobile communication terminal that moves with the relay device. And while storing the relay device identification information and the sector identification information of the sector in which the relay device is located in association with each other, when the exchange receives an incoming call request for a portable communication terminal that moves with the relay device. The location information management device specifies a sector where the portable communication terminal to be called is located based on the stored content, and the exchange that has received the incoming call request identifies the sector specified by the location information management device. An incoming call request is transmitted to a radio base station to be formed, and the radio base station that has received the incoming call request transmits the incoming call request to a sector specified by the position information management device.

According to this method, the area where the portable communication terminal that moves with the relay device is located is specified in sector units. Therefore, when an incoming call request should be transmitted to a portable communication terminal that moves with the relay device, the incoming call request should be transmitted only to the radio base station that defines the sector where the portable communication terminal is located. Is enough. Further, the radio base station that has received the incoming call request transmits the incoming call request only in the sector specified by the location information management device. As described above, according to the present invention, the transmission range of the incoming request of the portable communication terminal can be limited to a narrow range, so that the communication for the calling process (that is, the transmission of the incoming request) can be performed efficiently. it can.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. Such an embodiment shows one aspect of the present invention, and does not limit the present invention, and can be arbitrarily changed within the scope of the present invention.

<A: Configuration of Embodiment> FIG. 1 is a block diagram showing the overall configuration of a mobile communication system according to an embodiment of the present invention. As shown in FIG. 1, the mobile communication system includes a mobile communication network 1 and a relay device 21 installed in the mobile unit 2. The moving body 2 is a moving means such as a train or a bus that can move in a state in which the mobile communication terminal 7 is accommodated. In the present embodiment, the moving body 2 is assumed to be a train that moves along the track 3. In addition, the mobile communication terminal 7
Is an arbitrarily movable communication terminal such as a mobile phone. Each mobile communication terminal 7 is assigned an identification number (hereinafter referred to as “terminal identification information IDm”) capable of uniquely specifying the mobile communication terminal 7. The terminal identification information IDm is, for example, the telephone number of the mobile communication terminal 7 or the like.

On the other hand, the mobile communication network 1
Is a network that provides various mobile communication services such as a voice communication service and a data communication service to each of the mobile communication terminals 7 located within the communication service area of a plurality of wireless base stations 11A, 11B, 11C, 11
D, 11E and 11F, a plurality of exchanges 12A and 12B, and a location register 13. In addition,
Hereinafter, when it is not necessary to particularly specify any of the radio base stations and the exchanges, they are simply referred to as “the radio base station 11” and “the exchange 12”. FIG.
, Six wireless base stations 11 and two exchanges 1
2 and only one location register 13 are shown, but in reality there are more radio base stations 11, exchanges 12 and location registers 13. Similarly, only one mobile unit 2 is shown in FIG. 1, but there are actually more mobile units 2, and a relay device 21 is installed in each of them.

The wireless base station 11 performs wireless communication with the portable communication terminal 7 and the relay device 21 located outside the mobile unit 2. More specifically, the plurality of wireless base stations 11 are arranged at predetermined intervals as shown in FIG. 1, and each of them is a cell 4 (in FIG. 1, reference numerals “4a” to “4a” to “4
f "). Each cell 4 is an area where wireless communication is possible with the wireless base station 11 that defines the cell. Further, as shown in FIG.
Is composed of a plurality of sectors 41. In other words, one wireless base station 11 includes a plurality of antennas 11a whose emitted radio waves have different frequencies. These antennas 11a have directivity, and a sector 41 is defined as an area where wireless communication is possible with each antenna 11a. That is, the cell 4 includes any of the antennas 1
The sector 41 refers to an area where radio waves from one antenna 11a reach, whereas an area where radio waves from one radio base station 11 reach regardless of whether it is a radio wave from 1a or not. Each wireless base station 11 has a number (hereinafter, referred to as “base station identification information IDb”) that can uniquely identify the wireless base station 11, and each sector 41 has a number for identifying the sector 41. The numbers (hereinafter, referred to as “sector identification information IDs”) are respectively assigned. In the present embodiment, as shown in FIG. 2, one radio base station 11 includes three antennas 11a, and three sectors 41 are formed by dividing the periphery of the radio base station 11 by about 120 °. It is assumed that

As shown in FIG. 1, the exchange 12 is connected to one or a plurality of radio base stations 11, and receives incoming calls transmitted from each portable communication terminal 7 and incoming calls to these portable communication terminals 7. The call connection process is performed according to. Further, the exchange 12 has a wide-area registration area 5 including cells 4 defined by one or more radio base stations 11 connected to the exchange 12 (in FIG. 1, reference numerals "5a" and "5b" are assigned). Have jurisdiction over The wide area registration area 5 corresponds to the “location registration area” in the above-described conventional technology. That is, the wide area registration area 5 in the present embodiment is common to the conventional “location registration area” in that it is an area including one or more cells 4. However, in the present embodiment, location registration is performed only for the mobile communication terminal 7 located outside the mobile unit 2 in units of the wide area registration area 5, and the location registration is performed for all the mobile communication terminals 7. Since it is different from the conventional “location registration area” in that it is not used as a unit of registration, the area under the control of each exchange 12 is particularly described as “wide area registration area”. Each wide area registration area 5 is assigned a number (hereinafter, referred to as “wide area identification information IDw”) that can uniquely specify the wide area registration area 5. In this embodiment, as shown in FIG. 1, it is assumed that one exchange 12 controls one wide-area registration area 5.
2 may control a plurality of wide-area registration areas 5 that are separated from each other.

Next, FIG. 3 is a block diagram showing a configuration of a part of the mobile unit 2 related to the mobile communication system according to the present embodiment. As shown in the figure, the relay device 21 is installed on the moving body 2 and moves together with the moving body 2. That is, the relay device 21 can move with one or more portable communication terminals 7 accommodated in the moving body 2. As shown in FIG. 3, the relay device 21 includes a signal transmitting / receiving unit 211, a control unit 212, and a storage unit 213.

The signal transmission / reception unit 211 includes an antenna 211a directed to the outside of the moving body 2 and an antenna 211b directed to the inside of the moving body 2. The antenna 211a performs wireless communication with the antenna 11a that defines the sector 41 in which the relay device 21 is located. Then, the signal transmitting / receiving unit 211 outputs the signal from the wireless base station 11 received by the antenna 211a to the control unit 212, and transmits the signal supplied from the control unit 212 to the wireless base station 11 via the antenna 211a. . On the other hand, the antenna 211
b performs wireless communication with the portable communication terminal 7 housed inside the moving body 2. That is, the signal transmitting / receiving unit 211
Is the mobile communication terminal 7 received by the antenna 211b.
From the control unit 212 to the control unit 212.
2 is transmitted to the mobile communication terminal 7 via the antenna 211b.

The control section 212 executes various control programs stored in the storage section 213 to transmit and receive various information to and from the signal transmission / reception section 211 or the storage section 213. Function as The storage unit 213 stores, in addition to various control programs executed by the control unit 212, a number uniquely assigned to the relay device 21 (hereinafter, “relay device identification information I”).
Dt ”) is stored. Further, the storage unit 213 stores the sector identification information IDs of the sector 41 in which the relay device 21 is currently located and the base station identification information IDb of the wireless base station 11 forming the sector 41. That is, the control unit 212 receives the base station broadcast information transmitted from the radio base station 11 as needed, and based on the base station broadcast information, the base station identification information I in the storage unit 212.
Db and sector identification information IDs are updated as appropriate. Here, since the relay device 21 moves together with the mobile unit 2, the base station identification information IDb stored in the storage unit 213
The sector identification information IDs is sequentially updated by the control unit 212 each time the relay device 21 moves across each sector 41 or cell 4.

Next, FIG.
FIG. 3 is a diagram showing the configuration of FIG. This location register 13
Is a device for registering an area where the mobile communication terminal 7 is located for each of the plurality of mobile communication terminals 7, and as shown in FIG. 4, a storage unit 1 for storing a terminal position table.
31 and a storage unit 132 for storing a relay device position table
, A communication unit 133, and a control unit 134.

FIG. 5 is a diagram showing the specific contents of the terminal location table stored in the storage unit 131. As shown in FIG.
Is a table in which terminal identification information IDm of the mobile terminal 7 is associated with terminal area information INFm indicating an area where each mobile communication terminal 7 is currently located. Here, in the present embodiment, the contents of the terminal area information INFm stored in the terminal position table for the mobile communication terminal 7 accommodated inside the mobile unit 2 and the mobile communication terminal located outside the mobile unit 2 The content of the terminal area information INFm stored in the terminal position table for the terminal 7 is different. More specifically, for the portable communication terminal 7 in the mobile unit 2, the relay device identification information ID of the relay device 21 provided in the mobile unit 2
t is the terminal area information INF of the mobile communication terminal 7
m. In other words, the fact that the mobile communication terminal 7 in the moving body 2 is moving together with the relay device 21 provided in the moving body 2 is registered.
For example, in the example of FIG. 5, the terminal identification information IDm is "M
Since the mobile communication terminal 7 of "00003" is actually located in the mobile unit 2, the relay device identification information IDt "T003" of the relay device 21 provided in the mobile unit 2 is stored as the terminal area information INFm. Have been.

On the other hand, the portable communication terminal 7 outside the mobile body 2
, The wide area identification information IDw assigned to the wide area registration area 5 in which the portable communication terminal 7 is located,
The information is stored as terminal area information INFm of the portable communication terminal 7. For example, in the example of FIG. 5, since the mobile communication terminals 7 having the terminal identification information IDm of “M00001” and “M00002” are located outside the mobile unit 2, the mobile communication terminal 7 has a wide area as the terminal location area information INFm of the terminal position table. Area identification information IDw “W023” and “W
114 "are stored.

FIG. 6 is a diagram showing the specific contents of the relay device position table stored in the storage unit 132. As shown in the figure, the relay device position table has a correspondence between the relay device identification information IDt assigned to each relay device 21 and the located sector information INFt indicating the sector 41 in which the relay device 21 is currently located. It is a table attached. As shown in FIG. 6, the serving sector information INFt includes the base station identification information IDb of the wireless base station 11 that defines the cell 4 in which the relay device 21 is currently located, and the wireless base station 11 And the sector identification information IDs of the sector 41 in which the relay apparatus 21 is currently located among the three sectors 41 to be relayed.

Referring to FIG. 4 again, the communication unit 133 receives the information transmitted from each exchange 12 and outputs the information to the control unit 134, while transmitting the information supplied from the control unit 134 to the exchange 12. The control unit 134 also stores the storage unit 131 according to the information received via the communication unit 133.
Alternatively, the storage contents of 132 are updated or read out.

Further, when an incoming call request to any of the portable communication terminals 7 is generated, the control unit 134 refers to the contents of the terminal position table or the contents of both the terminal position table and the relay device position table. Has a function of specifying an area where the portable communication terminal 7 is located. More specifically, the control unit 134 controls the mobile communication terminal 7 in which the wide area identification information IDw is registered as the terminal area information INFm in the terminal position table (that is, the mobile communication terminal 7 located outside the mobile unit 2). Is determined to be located in the wide area registration area 5 indicated by the wide area identification information IDw. On the other hand, the control unit 134 controls the mobile communication terminal 7 in which the relay device identification information IDt is registered as the terminal area information INFm in the terminal position table (that is, the mobile communication terminal 7 accommodated in the mobile unit 2).
Is determined to be located in the mobile unit 2 indicated by the relay device identification information IDt based on the contents of the terminal position table, and the relay of the mobile unit 2 is determined based on the contents of the relay device position table. The device 21 specifies the sector 41 in which the device 21 is currently located. As a result, for each mobile communication terminal 7 located in the mobile 2, the sector 41 in which the mobile communication terminal 7 is located can be specified. 5 and 6, for the mobile communication terminal 7 whose terminal identification information IDm is “M00003”, the relay device 21 whose relay device identification information IDt is “T003” is referred to by referring to the contents of the terminal location table. It is specified that it is moving with. On the other hand, by referring to the contents of the relay device position table,
1 specifies that the area 41 is located in the sector 41 whose sector identification information IDs is “S02” among the sectors 41 formed by the wireless base station 11 whose base station identification information IDb is “B0253”. As a result, the sector 41 where the portable communication terminal 7 is located is specified. As will be described later, when an incoming call request is sent to any of the mobile communication terminals 7, the area where the mobile communication terminal 7 is located is specified based on the contents of these tables, and the specified area is specified. An incoming request is transmitted in the designated area.

<B: Operation of the Embodiment> Next, the operation of the present embodiment, in particular, the operation for position registration of the portable communication terminal 7 will be described. As described above, in the present embodiment, the contents of the location registration differ depending on whether or not the mobile communication terminal 7 is accommodated in the mobile 2. For this reason, the operation related to the portable communication terminal 7 located outside the moving body 2 and the operation related to the portable communication terminal 7 housed inside the moving body 2 will be separately described below.

<B-1: Location Registration Operation for Portable Communication Terminal Outside Mobile Body> For the mobile communication terminal 7 located outside the mobile body 2, location registration is performed in units of the wide area registration area 5. The details are as follows.

Each radio base station 11
The base station broadcast information is transmitted from time to time within each sector 41 formed by. The base station broadcast information includes the wide area identification information I of the wide area registration area 5 to which the wireless base station 11 belongs.
Dw and the base station identification information IDb of the radio base station 11
And sector identification information IDs indicating the sector 41 to which the base station broadcast information is transmitted.

On the other hand, the portable communication terminal 7 located outside the mobile unit 2 stores the wide area identification information IDw of the wide area registration area 5 which is currently located. Then, one wide area registration area 5 (that is, the stored wide area identification information ID)
From the wide area registration area 5) indicated by w to another wide area registration area 5
When the portable communication terminal 7 moves to the above, the portable communication terminal 7 sets the wide area identification information IDw different from the stored wide area identification information IDw
By detecting the base station broadcast information including the above, it is detected that the mobile station has moved across the wide area registration area 5. in this case,
The mobile communication terminal 7 stores the wide area identification information IDw indicating the wide area registration area 5 after moving, and sends a terminal location registration request including the wide area identification information IDw and the terminal identification information IDm of the mobile communication terminal 7. , To the radio base station 11 that defines the cell 4 in which the portable communication terminal 7 is located. This terminal location registration request is transmitted to the radio base station 1
1 and the location register 13 via the exchange 12
Sent to.

Control unit 13 in location register 13
4 receives the terminal location registration request via the communication unit 133, and searches the terminal location table for the terminal identification information IDm included in the request. Then, the control unit 134 sets the terminal location area information I corresponding to the retrieved terminal identification information IDm.
The NFm is updated to the wide area identification information IDw included in the terminal position registration request received this time. As described above, with respect to the mobile communication terminal 7 located outside the moving body 2, the position registration is performed every time the mobile communication terminal 7 moves across the wide area registration area 5.

<B-2: Location Registration Operation Related to Mobile Communication Terminal in Mobile 2> Next, an operation related to the mobile communication terminal 7 housed inside the mobile 2 will be described.

<B-2-1: The mobile communication terminal 7 is the mobile unit 2
Operation When Moving Inside> First, an operation when the mobile communication terminal 7 moves into the moving object 2 will be described with reference to FIG. The signal transmission / reception unit 211 of the relay device 21
Antenna 2 heading inside mobile unit 2 under the control of 12
The relay device notification information is transmitted from time to time to the moving body 2 using the communication device 11b (step Sa1). The relay device notification information includes the relay device identification information IDt assigned to the relay device 21.

On the other hand, when the portable communication terminal 7 is moving from outside to inside the moving body 2, that is, when the owner of the portable communication terminal 7 is getting on the moving body 2, Detects that the mobile device 2 has moved into the moving body 2 due to the reception level of the radio wave transmitted from the relay device 21 exceeding the threshold value (step Sa).
2). In this case, the mobile communication terminal 7 transmits a terminal location registration request including the relay device identification information IDt included in the received relay device notification information and the terminal identification information IDm of the mobile communication terminal 7. This terminal location registration request is relayed by the relay device 21 and then transmitted via the wireless base station 11 defining the cell 4 in which the relay device 21 is located and the exchange 12 to which the wireless base station 11 is connected. The data is transmitted to the location register 13 (step Sa3).

When the terminal location registration request is thus received,
The control unit 134 in the location register 13 searches for the terminal identification information IDm included in the terminal location table from the terminal location table, and stores the terminal location area information INFm associated with the terminal identification information IDm with the currently received terminal location. It is updated to the relay device identification information IDt included in the registration request (step Sa4). Through the above procedure, the fact that the mobile communication terminal 7 is located in the mobile object 2 is registered. Thereafter, a location registration response indicating that the location registration has been completed is transmitted from the location register 13 to the portable communication terminal 7 (step Sa5).

For example, in the terminal position table shown in FIG. 5, the portable communication terminal 7 having the terminal identification information IDm of “M00001” has the wide area identification information IDw of “W02”.
It is registered that it is currently located in the wide area registration area 5 of "3". When the mobile communication terminal 7 moves into the mobile body 2 in which the relay device 21 having the relay device identification information IDt “T001” is installed, the terminal location area information INFm of the mobile communication terminal 7 in the terminal position table is displayed. The wide area identification information IDw “W023” is updated to the relay apparatus identification information IDt “T001” to have the content shown in FIG. 8 (the updated part is hatched in FIG. 8).

On the other hand, when the mobile communication terminal 7 moves from the inside of the mobile body 2 to the outside (that is, when the owner of the mobile communication terminal 7 gets off the mobile body 2), the mobile communication terminal 7 That the reception level of the radio wave from the device 21 has fallen below a predetermined threshold value (or that the other radio base station 1
(The reception level of the radio wave from the mobile station 1 has risen above a predetermined threshold) to detect that the mobile body 2 has moved outside. In this case, the terminal location area information INFm of the mobile communication terminal 7 in the terminal position table is set in response to a terminal position registration request transmitted from the mobile communication terminal 7.
This is updated to the wide area identification information IDw of the wide area registration area 5 where the portable communication terminal 7 is currently located.

<B-2-2: Operation Related to Location Registration of Relay Unit 21> Next, FIG.
Is a flowchart showing processing executed at regular time intervals, and FIG. 10 is a sequence chart showing an operation of the entire mobile communication system accompanying the processing shown in FIG. Note that among the processes in the sequence chart shown in FIG. 10, those corresponding to the processes in the flowchart shown in FIG. 9 are denoted by the same reference numerals as those in FIG.

In the process shown in FIG. 9, the control unit 212 in the relay device 21 first receives base station broadcast information from the radio base station 11 that defines the cell 4 in which the relay device 21 is located ( Step Sb1). As described above, the base station broadcast information includes wide area identification information IDw,
Base station identification information IDb and sector identification information IDs are included. Upon receiving the base station broadcast information, the control unit 212 transmits the base station identification information IDb and the sector identification information IDs included in the base station broadcast information received this time, and the base station identification information IDb already stored in the storage unit 213.
And the sector identification information IDs (step S
b2). As a result, when it is determined that they match (step Sb3; Yes), the process ends. That is, the fact that there is no change in the base station identification information IDb and the sector identification information IDs means that the mobile station has not moved across the sectors 41. Therefore, it is not necessary to update the contents of the relay device position table. Because there is no.

On the other hand, when it is determined that at least one of the base station identification information IDb and the sector identification information IDs is different (step Sb3; No), the control unit 21
2 detects that it has moved across the sector 41 (FIG. 1).
0, step Sc1), and thereafter, a process for updating the relay device position table is executed. That is, first, the control unit 212 transmits a relay device position registration request including the base station identification information IDb and the sector identification information IDs corresponding to the moved sector 41 and the relay device identification information IDt of the relay device 21 to the location. The data is transmitted to the register 13 (step Sb4). As shown in FIG. 10, the relay device location registration request is transmitted to the cell 4 where the relay device 21 is located.
Is transmitted to the location register 13 via the wireless base station 11 forming the network and the exchange 12 connected thereto.

Upon receiving the relay device location registration request,
The control unit 134 in the location register 13 searches the relay device position information table for the relay device identification information IDt included therein. Then, the control unit 134 compares the located sector information INFt associated with the searched relay device identification information IDt with the base station identification information IDb and the sector identification information IDs included in the relay device position registration request received this time.
(Step Sc2). Thereafter, the control unit 134
Transmits to the relay device 21 a position registration response indicating that the update of the relay device position table has been completed (step Sc3).

On the other hand, the control unit 212 in the relay device 21
By receiving this location registration response, it is recognized that the location registration of the relay device 21 has been completed successfully (step Sb5 in FIG. 9). Thereafter, the control unit 212 converts the base station identification information IDb and the sector identification information IDs stored in the storage unit 213 into the base station identification information IDb and the sector identification information IDs corresponding to the moved sector 41 (that is, step Sb4). In step Sb6), and the processing for position registration is terminated.

More specifically, in the relay device position table shown in FIG. 6, the relay device identification information IDt is "T0
01 ", the base station identification information IDb" B0
003 "of the cell 4 defined by the radio base station 11
It is registered that the sector identification information IDs is located in the sector 41 of “S02”. This relay device 21
Is the other sector 41 formed by the same wireless base station 11.
(S01), the sector identification information IDs of the serving sector information INFt for the relay device 21 in the relay device position table is updated from "S02" to "S01". FIG.
The contents shown in FIG. In this case, the relay device 21
Is not performed, the content of the base station identification information IDb in the relay device position table is not changed.
On the other hand, from the state shown in FIG. 11, the relay apparatus is a sector 41 formed by the wireless base station 11 having the base station identification information IDb “B0004” and the sector identification information IDs is “S0
When the mobile station moves into the sector 41 "3", both the base station identification information IDb and the sector identification information IDs associated with the relay device identification information IDt of the relay device 21 are changed, and the contents shown in FIG. Becomes

As described above, the sector 41 in which the mobile communication terminal 7 in the mobile unit 2 is currently located includes the relay device identification information IDt stored in the terminal location table as the terminal area information INFm, and the relay device location table. In the relay device identification information IDt, the location information is specified by the serving sector information INFt associated with the relay device identification information IDt.
By updating t as needed, the registered position of the mobile communication terminal 7 is updated as needed. That is, the position registration of the mobile communication terminal 7 in the mobile unit 2 is substantially performed by the relay device 21 installed in the mobile unit 2.
It is done collectively.

<B-3: Operation for Calling Portable Communication Terminal 7> Next, the operation for calling the portable communication terminal 7 which is executed when an incoming call request for any of the portable communication terminals 7 occurs. explain. In the following, the mobile communication terminal 7 (hereinafter, referred to as “source mobile communication terminal”) located in the cell 4e defined by the wireless base station 11E in the wide area registration area 5b shown in FIG. It is assumed that an incoming call request is transmitted to a mobile communication terminal 7 (hereinafter referred to as a “destination mobile communication terminal”) located inside or outside the moving object 2 in the area 5a.

First, the exchange 12B having jurisdiction over the wide area registration area 5b in which the originating portable communication terminal 7 is located sends the incoming call request transmitted from the portable communication terminal 7 to the radio base station 11E.
, The location register 13 is queried for the area where the destination portable communication terminal 7 is currently located. Control unit 13 in location register 13
4 responds to this inquiry, specifies the current position of the destination portable communication terminal 7 by referring to the terminal position table or the relay device position table, and
Notify.

That is, the control unit 134 searches the terminal location table for the terminal identification information IDm of the destination portable communication terminal 7 and also stores the terminal area information INFm associated with the searched terminal identification information IDm. read out. Here, when the read terminal location area information INFm is the wide area identification information IDw, that is, when the destination portable communication terminal 7 is located outside the mobile unit 2 in the wide area registration area 5a, the control unit 134 Transmits the wide area identification information IDw to the exchange 12B.

The exchange 12B that has received the wide area identification information IDw sends a request to the exchange 12A that controls the wide area registration area 5a indicated by the wide area identification information IDw.
Send the incoming call request received this time. This incoming request is transmitted from the exchange 12A to the radio base stations 11A, 11B and 11C.
(In other words, the mobile communication terminal 7 is called) via the mobile communication terminal 7, and the destination mobile communication located in one of the cells 4 defined by these radio base stations 11. Received by terminal 7. In other words, when there is an incoming call request to the mobile communication terminal 7 located outside the mobile unit 2, the mobile communication terminal 7 simultaneously receives incoming calls from all the wireless base stations 11 belonging to the wide area registration area 5 where the mobile communication terminal 7 is located. The request will be sent. Thereafter, a communication line via the mobile communication network 1 is established between the destination portable communication terminal 7 and the source portable communication terminal 7, and mutual communication is performed between these portable communication terminals.

On the other hand, when the terminal area information INFm read by the control unit 134 in the location register 13 in response to the inquiry from the exchange 12B is the relay apparatus identification information IDt, that is, the destination portable communication terminal 7 When it is located in the moving body 2 in the area 5a, the following operation is performed. That is, the control unit 134
Retrieves the read relay device identification information IDt from the relay device position table, and searches the located sector information INFt associated with the searched relay device identification information IDt.
(Including the base station identification information IDb and the sector identification information IDs) and transmits them to the exchange 12B. That is, the control unit 134 notifies the exchange 12B of the sector 41 where the destination portable communication terminal 7 is located.

The exchange 12B, which has received the serving sector information INFt, sends the current time to the wireless base station 11 (here, the wireless base station 11C) indicated by the base station identification information IDb in the serving sector information INFt. The received incoming call request is transmitted together with the serving sector information INFt. The wireless base station 11C receiving these transmits an incoming call request via the antenna 11a corresponding to the sector 41 indicated by the sector identification information IDs in the received serving sector information INFt. As a result, an incoming call request is transmitted to the sector 41 where the destination portable communication terminal 7 is currently located, and the portable communication terminal 7
Is executed.

On the other hand, when the incoming call request transmitted from radio base station 11C is received via relay device 21 or directly from radio base station 11C, destination portable communication terminal 7 transmits an incoming call response to the incoming call request. Relay device 21
Then, the packet is transmitted to the exchange 12A via the radio base station 11C. Thereafter, a call connection process is executed by the exchanges 12A and 12B, and the mobile communication network 1 (more specifically, the wireless communication network 1) is connected between the source portable communication terminal 7 and the destination portable communication terminal 7 in the mobile unit 2. Base station 11C, exchange 12A, exchange 12
B and the wireless base station 11E) and the relay device 21 establish a communication line. Thereafter, via this communication line,
Communication is performed between both portable communication terminals 7. As described above, the relay device 21 not only plays a role of collectively registering the locations of the mobile communication terminals 7 accommodated in the moving body 2, but also performs a communication between the mobile communication terminals 7 and the other mobile communication terminals 7. It also plays the role of relaying communications.

Here, it is assumed that an incoming call request is transmitted from portable communication terminal 7 located in any one of wide-area registration areas 5, but an incoming call request to any portable communication terminal 7 is transmitted from a wired telephone. In this case, the same processing is performed. However, in this case, the incoming call request transmitted from the wired telephone is transmitted to the exchange 1 in the mobile communication network 1 via the gateway exchange located between the mobile communication network 1 and the general public network.
2, the exchange 12 executes processing such as inquiring of the location register 13 about the position of the portable communication terminal 7.

As described above, in the present embodiment, the relay device identification information IDt is registered as the position where the portable communication terminal 7 accommodated in the mobile unit 2 is located.
Since the serving sector information INFt associated with the relay device identification information IDt is updated each time the relay device 21 moves across the sector 41, the mobile communication terminal 7 in the mobile unit 2 The location area can be specified on a sector 41 basis. Therefore, it suffices to transmit the incoming call request to the mobile communication terminal 7 in the mobile unit 2 only to the sector 41 where the mobile communication terminal 7 is located. As described above, according to the present embodiment, the range in which the incoming request is to be transmitted can be limited to an extremely narrow range (sector), so that the communication traffic generated when the incoming request is transmitted can be significantly reduced. Further, in the present embodiment, the registration contents of the location register 13 regarding the mobile communication terminal 7 in the mobile object 2 are stored in the relay device 21.
Is updated in a lump by the relay device position registration request transmitted from the server. For this reason, although the unit of position registration of the mobile communication terminal 7 is set to an extremely narrow range as described above, communication traffic generated when registering the position of the mobile communication terminal 7 can be suppressed low.

In the present embodiment, the unit of location registration of the mobile communication terminal 7 in the mobile unit 2 is the sector 41, while the mobile communication terminal 7 located outside the mobile unit 2 has a plurality of cells 4. The wide area registration area 5 consisting of is used as a unit of position registration. This means that if the mobile communication terminal 7 located outside the mobile body 2 also performs position registration in units of the sector 41, the number of position registrations by each mobile communication terminal 7 increases significantly, and the position registration is required. This is because the load on the location register 13 that performs the communication traffic and the location registration processing becomes extremely large. In other words, the location registration in units of the sector 41 is performed in a situation where each of the plurality of mobile communication terminals 7 does not need to individually transmit a location registration request, that is, between the plurality of mobile communication terminals 7 and the location register 13. Relay device 21
In a situation where the position registration of the mobile communication terminal 7 is collectively executed by interposing the, it can be said that a particularly remarkable effect can be obtained.

When the portable communication terminal 7 in the mobile unit 2 and another portable communication terminal 7 communicate with each other without the intermediary of the relay device 21, the communication line between the two portable communication terminals 7 is established. At the time of establishment, the mobile communication terminal 7 in the mobile body 2
Needs to switch from communication with the relay device 21 to communication with the wireless base station forming the cell where the portable communication terminal 7 is located. However, this switching is not performed promptly due to various causes, and there is a possibility that a call loss may occur. On the other hand, in the present embodiment, the mobile communication terminal 7 in the mobile body 2 and another mobile communication terminal 7 communicate with each other via a communication line via the relay device 21. Therefore, the mobile communication terminal 7 in the mobile unit 2 does not need to switch the communication line when establishing the communication line. As a result, according to the present embodiment, it is possible to effectively avoid a call loss that may occur when the line is switched as described above.

<C: Modifications> One embodiment of the present invention has been described above. However, the above embodiment is merely an example, and various modifications may be made to the above embodiment without departing from the spirit of the present invention. Can be added. For example, the following modifications can be considered.

<C-1: Modification 1> In the above embodiment, the relay device identification information IDt is stored as the terminal area information INFm of the portable communication terminal 7 in the mobile unit 2 in the terminal position table, In the relay device position table, the located sector information INFt indicating the sector in which each relay device 21 is located is stored. However, as shown in FIG. As the information INFm, the relay device 21 in the mobile body 2
Area information INFt (base station identification information I
Db and sector identification information IDs) may be stored. For example, in the terminal position table shown in FIG. 13, the mobile communication terminal 7 whose terminal identification information IDm is “M00001” and “M00002” is located in the wide area registration area 5 where the wide area identification information IDw is “W023” and “W114”. This indicates that they are located outside the mobile unit 2 respectively. On the other hand, the terminal identification information I
The mobile communication terminal 7 whose Dm is “M00003” has the sector identification information IDs “S02” of the sectors 41 of the wireless base station 11 whose base station identification information IDb is “B0003”.
This indicates that the user is in the sector 41.

As described above, the serving sector information INFt is used as the terminal serving area information INFm in the terminal location table.
Is stored, the relay device position registration request transmitted from the relay device 21 includes the terminal identification information IDm of the mobile communication terminal 7 accommodated in the moving body 2 and the location register 13 Control unit 134
Is the terminal identification information IDm in the terminal position table.
Terminal identification information ID included in the relay device position registration request
What is necessary is just to update the located area information INFt associated with m. That is, when the method according to the above-described embodiment is adopted, the location register 13 that has received the relay device position registration request stores the area information INFt corresponding to one of the relay device identification information IDt in the relay device position table. Is sufficient, but when the method according to the present modified example is adopted, the location register 13 updates the located area information INFt corresponding to all the terminal identification information IDm included in the relay device location registration request. There is a need.

<C-2: Modification 2> In the above embodiment, the relay device position registration request transmitted from the relay device 21 includes the relay device identification information IDt of the relay device 21 and
Although the base station identification information IDb and the sector identification information IDs corresponding to the sector 41 in which the relay apparatus 21 is present are included, the relay apparatus position registration request transmitted from the relay apparatus 21 includes the relay apparatus identification information IDt. Only the base station identification information IDb and the sector identification information IDs may be included in the relay device location registration request in the wireless base station 11.

That is, the control unit 212 of the relay device 21
Detects that it has moved across the sector 41 (step Sb3 in FIG. 9; No, step Sc in FIG. 10).
1) A relay device position registration request including the relay device identification information IDt of the relay device 21 is transmitted to the wireless base station 11 defining the sector 41 in which the relay device 21 is located. Then, the wireless base station 11 that has received the relay device position registration request converts its own base station identification information IDb and the sector identification information IDs of the sector 41 defined by the antenna 11a that has received the relay device position registration request. The request is transmitted to the location register 13 by being included in the relay device position registration request. In such a case, as in the above embodiment, the relay device position registration request received by the location register 13 includes the relay device identification information IDt, the base station identification information IDb, and the sector identification information IDs. Therefore, the location register 13 can update the contents of the relay device position table based on the relay device position registration request.

Also, in this modification, the above-mentioned modification 1
Can be applied. That is,
In the relay device position registration request transmitted from the relay device 21,
While including the terminal identification information IDm of the portable communication terminal 7 accommodated in the mobile unit 2, the wireless base station 1
1 includes the base station identification information IDb and the sector identification information IDs of the sector 41 defined by the antenna 11a that has received the relay device position registration request in the relay device position registration request, and sends the request to the location register 13. May be transmitted. In this case, the control unit 134 in the location register 13 determines, based on the received relay device position registration request, all of the terminal identification information IDm included in the relay device position registration request among the terminal identification information IDm in the terminal position table. May be updated to the base station identification information IDb and the sector identification information IDs included in the relay device location registration request.

<C-3: Modification 3> In the above embodiment, every time a terminal position registration request is transmitted from the portable communication terminal 7 in the mobile unit 2, the terminal position registration request is transmitted via the relay device 21. Although the relay device 21 temporarily stores the terminal position registration request from the mobile communication terminal 7 and transmits the terminal position registration request from the plurality of mobile communication terminals 7 for a certain period of time. You may make it transmit to the location register 13 collectively for every interval. That is, the terminal identification information IDm included in each terminal location registration request transmitted from one or more portable communication terminals 7 during a certain period of time and the relay device identification information IDt of the relay device 21 are collected together in the location register 13.
It is sent to. This eliminates the need to transmit the relay device identification information IDt every time each terminal location registration request is made, so that communication traffic can be further reduced. In the case of transportation such as trains and buses, it is particularly easy for passengers to get in at stations and stops at the same time, so from the viewpoint of reducing communication traffic, terminal location registration requests are sent together at regular intervals. Is desirable.

<C-4: Modification 4> In the above embodiment, the case where one cell 4 is composed of three sectors 41 is illustrated, but the number of sectors 41 is not limited to this. . For example, the area around the wireless base station 11 is divided every 60 °, and one cell 4 is divided into six sectors 4.
One cell 4 may be constituted by one or another number of sectors 41.

<C-5: Modified Example 5> In the above-described embodiment, the configuration in which one relay device 21 is provided in the moving body 2 has been exemplified.
1 may be provided. For example, when the present invention is applied to a train composed of a plurality of vehicles, a relay device 21 is provided for each of these vehicles, and each relay device collectively registers the position of the mobile communication terminal 7 accommodated in the vehicle. May be performed. In this case, the mobile communication terminal 7 accommodated in one vehicle and the mobile communication terminal 7 accommodated in another vehicle are located in different sectors 41 because the moving body 2 is long in the traveling direction. However, appropriate call processing can be realized.

[0063]

As described above, according to the present invention,
Processes relating to location registration and calling of the mobile communication terminal can be efficiently performed.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a mobile communication system according to an embodiment of the present invention.

FIG. 2 is a diagram for explaining cells and sectors in the mobile communication system.

FIG. 3 is a block diagram showing a configuration of a mobile unit and a relay device in the mobile communication system.

FIG. 4 is a block diagram showing a configuration of a location register in the mobile communication system.

FIG. 5 is a diagram showing the contents of a terminal location table.

FIG. 6 is a diagram showing contents of a relay device position table.

FIG. 7 is a sequence chart showing an operation when the mobile communication terminal moves into a moving body.

FIG. 8 is a diagram illustrating a specific example of updated contents of a terminal position table.

FIG. 9 is a flowchart illustrating an operation of the relay device.

FIG. 10 is a sequence chart showing an operation of the mobile communication system accompanying movement of the relay device.

FIG. 11 is a diagram illustrating a specific example of the update content of the relay device position table.

FIG. 12 is a diagram showing a specific example of the update content of the relay device position table.

FIG. 13 is a diagram showing contents of a terminal location table according to a modification of the present invention.

[Explanation of symbols]

1 ... mobile communication network, 11 (11A, 11B, 11C, 1
1D, 11E, 11F) ... wireless base station, 12 (12
A, 12B) exchange, 13 location register (location information management device), 131, 132 storage unit (storage means), 133 communication unit, 134 control unit (specification means, update means) 2, a mobile unit, 21 a relay device, 211 a signal transmitting / receiving unit, 212 a control unit (detection means), 213 a storage unit, 4 cells, 41 sectors, 5 wide areas Registration area.

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Masami Fujiwara F-term (reference) 5K067 AA21 BB04 DD17 DD19 EE02 EE16 within NTT Docomo, 2-1-1 Nagatacho, Chiyoda-ku, Tokyo EE46 FF02 FF03 HH23 JJ54 JJ64 KK02 KK03 KK15

Claims (19)

[Claims] 1. A plurality of sectors formed by a radio base station are defined as one
Position information using a relay device capable of passing with the above portable communication terminal, and a position information management device for storing area information indicating an area where the portable communication terminal is located for each of the plurality of portable communication terminals The management method, wherein the relay device transmits a location registration request including relay device identification information for identifying the relay device and sector identification information indicating a sector where the relay device is located, The position information management device receiving the request,
Based on the location registration request, the relay device identification information of the relay device is stored as the area information of the mobile communication terminal that moves with the relay device, and the relay device identification information and the relay device are located. A position information management method characterized by storing sector identification information of a sector in association with each other. 2. A plurality of sectors formed by a radio base station are defined as one sector.
Position information using a relay device capable of passing with the above portable communication terminal, and a position information management device for storing area information indicating an area where the portable communication terminal is located for each of the plurality of portable communication terminals The management method, wherein the relay device transmits a location registration request including sector identification information indicating a sector where the relay device is located, wherein the location information management device that has received the location registration request includes:
A position information management method, comprising: storing sector identification information included in the position registration request as area information of a mobile communication terminal that moves with the relay device based on the position registration request. 3. The location information management device according to claim 1, wherein one or more of the plurality of mobile communication terminals includes a plurality of sectors as coverage area information of a mobile communication terminal other than the mobile communication terminal moving with the relay device. The location information management method according to claim 1 or 2, wherein wide area identification information for identifying the wide area registration area where the portable communication terminal is located among the wide area registration areas composed of cells is stored. 4. A position information management device that stores, for each of a plurality of mobile communication terminals, area information indicating an area where the mobile communication terminal is located, and a plurality of wireless base stations each forming a plurality of sectors. A method for calling a mobile communication terminal accommodated in a mobile communication network having a plurality of exchanges, wherein a relay device capable of passing through a plurality of sectors with one or more mobile communication terminals identifies the relay device. The relay device identification information for transmitting a location registration request including sector identification information for identifying the sector where the relay device is located, the location information management device that has received the location registration request,
Based on the location registration request, the relay device identification information of the relay device is stored as the area information of the mobile communication terminal that moves with the relay device, and the relay device identification information and the relay device are located. While storing in association with the sector identification information of the sector, when the exchange receives an incoming request for the portable communication terminal that moves with the relay device, the location information management device, based on the storage content, The exchange that has received the incoming call request identifies the sector in which the mobile communication terminal to be called is located, transmits an incoming call request to a wireless base station forming the sector specified by the location information management device, The mobile base station having received the incoming call request transmits the incoming call request within the sector specified by the location information management device. How to call a communication terminal. 5. A position information management device for storing, for each of a plurality of mobile communication terminals, area information indicating an area where the mobile communication terminal is located, and a plurality of wireless base stations each forming a plurality of sectors. A method for calling a mobile communication terminal accommodated in a mobile communication network having a plurality of exchanges, wherein a relay device capable of passing through a plurality of sectors with one or more mobile communication terminals is located. A position registration request including sector identification information for identifying a sector is transmitted, and the position information management device that receives the position registration request includes:
On the basis of the location registration request, while storing the sector identification information included in the location registration request as the area information of the mobile communication terminal that moves with the relay device, the mobile communication device moves with the relay device. When the incoming call request to the terminal is received by the exchange, the location information management device specifies the sector where the portable communication terminal to be called is located based on the stored contents, and the exchange that has received the incoming call request, An incoming call request is transmitted to the wireless base station forming the sector specified by the location information management device, and the wireless base station that has received the incoming call request is located within the sector specified by the location information management device. A method for calling a mobile communication terminal, comprising transmitting an incoming call request. 6. A plurality of sectors formed by a radio base station are defined as one sector.
In the mobile communication network capable of communicating with the relay device that can pass along with the mobile communication terminal described above, managing the area information indicating the area where the mobile communication terminal is located for each of the plurality of mobile communication terminals The relay device, wherein relay device identification information for identifying the relay device is stored as area information of a mobile communication terminal that moves with the relay device among the plurality of mobile communication terminals, and the relay device Storage means for associating the relay device identification information with sector identification information indicating a sector in which the relay device is located, and a mobile communication terminal that moves with the relay device based on the storage content of the storage device Specifying means for specifying a sector in which the location information is located. 7. A position registration request including relay device identification information for identifying the relay device and sector identification information of a sector in which the relay device is located is received from the relay device, and based on the position registration request. 7. The location information management device according to claim 6, further comprising an updating unit that updates sector identification information associated with the relay device identification information. 8. A plurality of sectors formed by a radio base station are defined as one sector.
In the mobile communication network capable of communicating with the relay device that can pass along with the mobile communication terminal described above, managing the area information indicating the area where the mobile communication terminal is located for each of the plurality of mobile communication terminals A device, as the area information of a mobile communication terminal that moves with the relay device among the plurality of mobile communication terminals, stores sector identification information for identifying a sector in which the relay device is located. Means for specifying a sector in which a mobile communication terminal that moves with the relay device is located, based on the contents stored in the storage means. 9. The at least one cell including a plurality of sectors as coverage area information of a portable communication terminal other than a portable communication terminal that moves with the relay device among the plurality of portable communication terminals. And storing wide area identification information for identifying the wide area registration area where the portable communication terminal is located, among the wide area registration areas consisting of: 7. A wide-area registration area in which a mobile communication terminal other than the mobile communication terminal that moves is located.
9. The position information management device according to any one of items 1 to 8. 10. The apparatus according to claim 6, wherein said specifying means specifies an area where said portable communication terminal is located in response to an inquiry from an exchange which has received an incoming call request to any of said portable communication terminals. 9
The position information management device according to any one of the above. 11. A plurality of wireless base stations each forming a plurality of sectors, and a position information management device for each of a plurality of portable communication terminals, storing location area information indicating an area where the portable communication terminal is located. A relay device that is capable of communicating with a mobile communication network equipped with a mobile communication terminal and is capable of passing through a plurality of sectors with one or more portable communication terminals, and that identifies the relay device. Information, relay device identification information to be stored by the location information management device as the area information of the mobile communication terminal moving with the relay device, and sector identification information indicating the sector in which the relay device is located. The position information management device transmits a position registration request including the relay device identification information of the relay device and the sector identification information to be stored in association with the relay device to the position information management device. Relay apparatus characterized by comprising a signal means. 12. A plurality of radio base stations each forming a plurality of sectors, and a position information management device for each of the plurality of portable communication terminals, which stores area information indicating an area where the portable communication terminal is located. A relay device capable of communicating with a mobile communication network including a plurality of sectors and passing through a plurality of sectors together with one or more mobile communication terminals, and indicating a sector in which the relay device is located. A position registration request including sector identification information to be stored by the position information management device as information, and serving area information of the mobile communication terminal moving with the relay device, is transmitted to the position information management device. A relay device comprising communication means. 13. A relay device, comprising: a detecting unit that detects that the relay device has moved from one sector to another sector; wherein the communication unit detects the position every time the detecting unit detects a movement across sectors. 13. The relay device according to claim 11, wherein the relay device transmits a registration request. 14. The communication unit according to claim 11, wherein the communication unit relays communication performed between the mobile communication terminal moving with the relay device and another communication terminal via the mobile communication network. The relay device according to any one of the above. 15. A plurality of mobile communication terminals, each of which is included in a mobile communication network having a location information management device that stores area information indicating an area where the mobile communication terminal is located, and forms a plurality of sectors. A wireless base station, which is relay device identification information for identifying the relay device from a relay device that can pass through a plurality of sectors with one or more mobile communication terminals, and moves with the relay device. Upon receiving a location registration request including the relay device identification information to be stored by the location information management device as the area information of the mobile communication terminal, the location information management device receives sector registration information indicating a sector in which the relay device is located, and The management device includes sector identification information to be stored in association with the relay device identification information of the relay device in the location registration request and transmits the location registration request to the location information management device. Radio base station to the butterfly. 16. A plurality of mobile communication terminals, each of which is included in a mobile communication network including a location information management device that stores area information indicating an area where the mobile communication terminal is located, and forms a plurality of sectors. When receiving a location registration request from a relay device that is capable of passing a plurality of sectors with one or more mobile communication terminals together with one or more mobile communication terminals, the wireless base station includes sector identification information indicating a sector where the relay device is located, and A wireless base station for transmitting, to the position information management device, sector identification information to be stored by the position information management device as area information of a mobile communication terminal that moves with the device. 17. A position information management device that stores, for each of a plurality of mobile communication terminals, area information indicating an area where the mobile communication terminal is located, and a plurality of wireless base stations each forming a plurality of sectors. And a plurality of exchanges, and a mobile communication network capable of communicating with a relay device capable of passing through a plurality of sectors with one or more mobile communication terminals, wherein the location information management device includes: While storing relay device identification information for identifying the relay device as serving area information of the mobile communication terminal that moves with the relay device among the terminals, the relay device identification information of the relay device and the relay device While storing in association with the sector identification information indicating the location of the sector, a query from the exchange that has received the incoming call request for the portable communication terminal that moves with the relay device is stored. A mobile communication network characterized by specifying a sector in which a portable communication terminal to be called is located, based on the stored content, in response to the request. 18. A position information management device for storing, for each of a plurality of mobile communication terminals, area information indicating an area where the mobile communication terminal is located, and a plurality of wireless base stations each forming a plurality of sectors. And a plurality of exchanges, and a mobile communication network capable of communicating with a relay device capable of passing through a plurality of sectors with one or more mobile communication terminals, wherein the location information management device includes: As the area information of the mobile communication terminal that moves with the relay device among the terminals, sector identification information for identifying the sector where the relay device is located is stored, while the mobile device that moves with the relay device is stored. In response to an inquiry from the exchange which has received the incoming call request to the communication terminal, specifying the sector in which the portable communication terminal to be called is located based on the stored contents. Characteristic mobile communication network. 19. The exchange having received the incoming call request transmits the incoming call request to a wireless base station forming a sector specified by the location information management device. 19. The mobile communication network according to claim 17, wherein the incoming call request is transmitted within a sector specified by the location information management device.