JP3489928B2 - Communication line connection method for simple mobile phones - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an on-vehicle line connection device for a simple mobile phone (PHS) that enables the use of a simple mobile phone (PHS) even in a moving body such as a train, bus, or automobile.

[0002]

2. Description of the Related Art Conventionally, mobile communication devices include mobile phones and car phones.

In addition to such a conventional mobile communication device, a simple mobile phone (PHS) has been newly used in recent years. The simple mobile phone (PHS) is considered to be widely used as mobile communication because it is inexpensive in cost.

Table 1 shows a comparison between a simple mobile phone (PHS) and a commonly used wireless phone such as a mobile phone and a car phone, that is, mobile communication.

[0005]

[Table 1]

[0006]

Conventionally used mobile phones and the like can be used even during high speed movement by trains, buses, automobiles and the like. On the other hand, simple mobile phones (PH
S) cannot be used while moving at high speed. The difference is
This is mainly due to the difference in the coverage area of the wireless base station. In other words, since the coverage area of a radio base station for a car telephone or the like is as wide as about 30 to 50 km, it is easy to perform processing within the radio base station when passing between the radio base stations even during high-speed movement. On the other hand, since the coverage area of a wireless base station in a simple mobile phone (PHS) is as small as several hundreds of meters, when moving faster than a walking speed, the number of processings between wireless base stations increases rapidly and the processing cannot be completed.

It is an object of the present invention to provide a communication line connecting method and device for a simple mobile phone so that the simple mobile phone (PHS) can be used even in a moving body which is moving at a high speed.

[0008]

The present invention has been made to achieve the above object, and a first aspect thereof is as follows.
In a method of connecting a communication line for connecting a simple mobile phone on a mobile body to a public network provided outside the mobile body, a call from the simple mobile phone on the mobile body is provided on the mobile body. A simple mobile phone characterized in that a line connection is established between the public line network and the simple mobile phone by connecting a line to a wireless base station which is received by a mobile station and connected to the public line network through a wireless line. A method for connecting a communication line in a telephone is provided.

According to a second aspect of the present invention, there is provided a method of connecting a communication line for connecting a simple mobile phone on a mobile unit to a public line network provided outside the mobile unit, wherein the public line network is connected to the mobile unit. Receiving a call to the simple mobile phone from the wireless base station connected to the public line network and connecting the line to the mobile station communicating with the simple mobile phone provided on the mobile body via the wireless line. Then, there is provided a method for connecting a communication line in a simple mobile phone, characterized in that a line is connected between the public line network and the simple mobile phone.

According to a third aspect of the present invention, there is provided a method for connecting a communication line for connecting a simple portable telephone on a moving body to a public line network provided outside the moving body, wherein the moving body is on the moving body. By providing a mobile station that communicates with the above simple mobile phone, providing a radio base station connected to a public line outside the mobile body, and connecting the mobile station and the radio base station via a radio line, There is provided a method for connecting a communication line in a simple mobile phone, characterized in that the simple mobile phone on the mobile body is connected to the public line.

The operations of the above-described first, second and third modes will be collectively described.

A mobile station is provided on the mobile body to communicate with a simple mobile phone on the mobile body. On the other hand, a wireless base station connected to a public line is provided outside the mobile unit. Then, the mobile station and the wireless base station are connected to each other via a wireless line to connect the simple mobile phone on the mobile body to the public line. That is, in the case of making a call from the simple mobile phone on the mobile body, the call is accepted by the mobile station provided on the mobile body. Then, this is connected to a wireless base station connected to the public line network through a wireless line. This allows line connection between the public line network and the simple mobile phone. On the contrary, when there is a call from the public line network to the portable telephone on the mobile unit, the call is accepted by the wireless base station line-connected to the public line network. Then, this is connected to a mobile station provided on the mobile body through a wireless line. As a result, the line connection between the public line network and the simple mobile phone is established. If the outputs of the mobile station and the wireless base station are made sufficiently strong (in other words, if the coverage area of one wireless base station is wide), the processing that crosses the coverage area will not occur frequently. , It is possible to talk even when the mobile is moving at high speed.

According to a fourth aspect of the present invention, in a method of connecting a communication line for connecting simple mobile phones existing on one moving body, a plurality of communication lines for communicating with the simple mobile phones on the moving body are provided. And a circuit switching unit for connecting a line between the communication units to each other are provided on the mobile unit to connect the lines through the one or more communication units, thereby simplifying the operation on the high-speed mobile unit. A communication line connection method in a simple mobile phone, which is characterized in that mobile phones are connected to each other via a line.

The operation of the fourth aspect will be described.

The simple mobile phones on the mobile unit can be connected to each other via the communication unit and the line switching unit.

According to a fifth aspect of the present invention, in a communication line connecting device for connecting a simple mobile phone on a mobile unit and a radio base station provided outside the mobile unit and connected to a public line network, Receiving means for receiving a signal transmitted from the mobile phone, code recognizing means for detecting a code prearranged for indicating the usage status of the simple mobile phone from the signals received by the receiving means, and the code recognizing means. The code connection means for determining the content of the detected code, and the line connection with the radio base station only when the result of the determination by the code determination means is that the code means use in the mobile body. There is provided a communication line connection device, characterized in that the communication line connection device has a circuit switching connection means for performing processing through a wireless line.

The operation of the fifth aspect will be described.

The receiving means receives a signal transmitted by the simple mobile phone. The code recognizing means detects, from the signal received by the receiving means, a code that has been agreed in advance to indicate the usage status of the simple mobile phone. The code determination means determines the content of the code detected by the code recognition means. As a result of this determination, the circuit switching connection means performs the circuit connection processing with the wireless base station through the wireless circuit only when the code means the use in the moving body. By doing so, the transmission signal of the simple mobile phone used on the ground is prevented from being erroneously processed by the mobile station on the mobile body.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings.

The present embodiment enables line connection between a simple portable telephone (PHS) used in a high-speed moving body and the ground side. Further, it is possible to make a call between simple mobile phones in the high-speed moving body. Here, the high-speed moving body refers to a moving body that moves faster than a person walks, for example, a train, a bus, an automobile, etc., including the Shinkansen.

First, an outline of the system will be described with reference to FIG.

This system comprises mobile stations 7 and 8 mounted on a high speed mobile unit 1, a radio base station 19 installed on the ground,
It comprises a public line 28 and a ground station 35 (see FIG. 2) which is connected to the public line 28 and which is not shown in the figure.

First, the mobile stations 7 and 8 will be described.

The mobile station 7 has a line connection between a simple portable telephone (PHS) used in the high-speed moving body 1 and a radio base station 19 installed on the ground, and a simple connection in the high-speed moving body 1. This is for making line connection between the mobile phones (PHS) 3. The mobile station 7 includes a mobile station wireless communication unit 17, a mobile station circuit switching unit 15, and a mobile station PHS communication unit 11.

The mobile station radio communication unit 17 is for transmitting and receiving radio signals to and from the radio base station 19 on the ground. The mobile station wireless communication unit 17 has a function of connecting a line to the wireless communication unit 22 of the wireless base station 19 in the area when the high-speed moving body 1 makes a call to the outside. On the other hand, at the time of reception, the wireless communication unit 2 of the wireless base station 19 in the area concerned.
The dial number specified in 2 is used as the mobile station circuit switching unit 15
It has a function of transmitting to. The mobile station wireless communication unit 17
The signal transmission capacity of the high-speed moving body 1 is sufficiently high.
The movement of the wireless base station 19 does not occur so frequently that it cannot be processed with the movement of the wireless base station 19.

The mobile station PHS communication unit 11 is a high-speed mobile unit 1.
When a person inside the mobile phone makes a call using the simple mobile phone (PHS) 3, the dial operation signal transmitted from the simple mobile phone (PHS) 3 is detected, and the mobile station circuit switching unit 15 is detected.
To connect to. Also, at the time of reception, a simple mobile phone (PHS) designated by the mobile station circuit switching unit 15
The line is connected to 3.

The code recognition unit 31 (see FIG. 2) provided inside the mobile station PHS communication unit 11 is a simple mobile phone (P
This is for detecting a code indicating the usage mode of the portable telephone (PHS) from the signal sent from the HS 3). The code recognition unit 31 changes the detected code to
The information is transmitted to the code determination unit 32 in the mobile station circuit switching unit 15.

When receiving from the outside of the high-speed mobile unit 1, the mobile station circuit switching unit 15 uses the dial number of the simple portable telephone (PHS) designated by the mobile station wireless communication unit 17 as the mobile station PHS communication unit 11 (and the later-described). Mobile station PHS communication unit 13)
Is to be transmitted to. On the other hand, when a call is made from the simple form telephone (PHS) 3 in the high-speed mobile unit 1, the mobile station PH
The mobile station wireless communication unit 17 designated by the S communication unit 11 (or the mobile station PHS communication unit 13) (or another mobile station PHS communication unit 1 mounted on the high-speed mobile body 1).
1, 13) to connect a line. The mobile station line switching unit 15 performs the above line connection processing when the mode of use of the simple mobile phone (PHS) 3 is the "high-speed mobile mode".
The configuration is performed only when The code determination unit 32 (see FIG. 2) provided inside the mobile station circuit switching unit 15 determines the usage mode based on the code detected by the code recognition unit 31. The reason why such a configuration is adopted is to prevent the simple form telephone (PHS) 3 used on the ground from being connected to the line via the mobile station 7.

When the high-speed moving body 1 is large, the radio waves output from the simple portable telephone (PHS) 3 in the high-speed moving body 1 may not reach the mobile station 7. Mobile station 8
Is for preventing such a situation, and is installed at various places in the high-speed moving body 1 and is provided with a simple mobile phone (PHS) 3
Is received and transmitted to the mobile station circuit switching unit 15 of the mobile station 7. In addition, the signal sent from the mobile station 7 is transmitted at various places in the high-speed moving body 1. Therefore, the mobile station 8 is
Only the PHS communication unit 13 having the same function as the communication unit 11 is provided. Since the transmission to the outside of the high-speed mobile unit 1 is performed via the mobile station 7, the mobile station 8 does not include the mobile station wireless communication unit 17 and the mobile station circuit switching unit 15.

Of the mobile stations 7 and 8, it is sufficient to provide only one mobile station 7 for one high-speed moving body 1 as long as the communication capacity is sufficient. On the other hand, it is necessary to provide the required number of mobile stations 8 according to the size of the high-speed moving body 1 or the like. For example, when the mobile station PHS communication units 11 and 13 that cover a range of several hundred m are adopted, in a train whose length of one vehicle is around 20 m (15 to 25 m),
The mobile station 7 (or mobile station 8) may be installed for every four cars. The Shinkansen is a 16-car train, so between the 2nd and 3rd cars, 6,
The mobile station PHS communication unit should be installed between the 7th car, between the 10th and 11th cars, and between the 14th and 15th cars.

Next, the radio base station 19 installed on the ground will be described.

The radio base station 19 includes a mobile station 7 mounted on the high speed mobile unit 1 and a public line network 28 (here, NT).
(T, NCC line). The radio base station 19 includes the mobile station radio communication unit 17 described above.
The wireless base station wireless communication unit 22 described later is provided for each predetermined area that is determined according to the signal transmission / reception capability, and these are all connected to the public line network 28.
The wireless base station 19 includes a wireless base station wireless communication unit 22 and a wireless base station circuit switching unit 25.

The radio base station radio communication section 22 is for transmitting signals to the mobile station radio communication section 17 and for receiving signals transmitted from the mobile station radio communication section 17. Specifically, the wireless base station wireless communication unit 22 is
At the time of reception, the mobile station wireless communication unit 17 in the area has a function of connecting a call transmitted through a wireless line to the wireless base station circuit switching unit 25. On the other hand, at the time of calling, a call from the public line 28 sent via the wireless base station circuit switching unit 25 is transferred to the mobile station wireless communication unit 17 of the high-speed mobile unit 1 on which the portable telephone (PHS) 3 is mounted. It is equipped with a function to connect to a wireless line. The wireless communication unit 2
2 has a high signal transmission capability, and its coverage area is sufficiently wider than the speed of the high speed moving body 1. Therefore, even if the high-speed moving body 1 moves, the switching process does not occur so frequently that it cannot be processed.

When the radio base station circuit switching unit 25 receives a call from the simple portable telephone (PHS) 3 in the high-speed mobile unit 1 via the radio base station radio communication unit 22, it connects to the corresponding public line 28. It has a function to perform processing. On the contrary, from the public network 28 side, the simple mobile phone (P
It has a function of connecting a line to the wireless base station wireless communication unit 22 when a call is made to the HS) 3.

Next, the ground station will be described with reference to FIG.

The ground station 35 is for connecting the portable telephone (PHS) 3 used in the public mode to the public line network 28. The ground station 35 is arranged so that the service areas of a predetermined area (radius of about 15 to 25 km) determined according to the transmission capability of the simple mobile phone (PHS) 3 and the like overlap each other without failing. . Although not clear in the drawing, the ground station 35 is connected to the public line 28. The ground station 35 includes a ground station circuit switching unit 38 and a ground station PHS communication unit 36.

The ground station PHS communication unit 36 is for connecting the portable telephone (PHS) 3 to the public line network 28. The code recognition unit 37 provided inside the ground station PHS communication unit 36 has a function of detecting a code indicating a use mode from a signal transmitted from the simple mobile phone (PHS) 3. The code recognition section 37 outputs the detected code to the circuit switching section 38.

The ground station line switching unit 38 is for connecting the simple portable telephone (PHS) 3 to the public line 28. The ground station line switching unit 38 uses the simple mobile phone (P
Only when the usage mode of the HS) 3 is the public mode, the connection process is performed. Therefore, in the high speed moving object mode, the connection process is not performed. The use mode is determined by the code determination unit 39 provided inside the ground station line switching unit 38 based on the code detected by the code recognition unit 37. The reason why such a configuration is adopted is to prevent the portable telephone (PHS) 3 used on the mobile body from being connected via the ground station 35.

Next, the structure of the simple portable telephone (PHS) 3 in this embodiment will be described with reference to FIG. Here, only the part related to the present invention will be described, and the description of the other parts will be omitted.

In the portable telephone (PHS) 3 of this embodiment, in addition to the conventional modes (public mode, business / home mode), the use mode is premised on use in a high-speed moving body. Equipped with "high-speed moving object mode". Note that the “business / home mode” is a mode that is premised on use on the premises / home. "Public mode" is a mode that is intended for use outside the home or outside the home.

The use mode is designated by inputting a predetermined code (special number) preliminarily set for each mode using the code input section 30 provided in the simple mobile phone (PHS). Has become.
The simple mobile phone (PHS) 3 is adapted to transmit not only the telephone number of the other party when making a call, but also the code. The mobile station 7 and the ground station 35 described above determine the usage mode of the portable telephone (PHS) based on this code. The actual code input section 30 can be used as a normal dial button. That is,
It is possible to specify (or switch) the use mode by inputting a code (special number) at the beginning of the dial before inputting the telephone number of the other party.
However, the specific method for specifying (or switching) the use mode is not limited to this. For example, a dedicated changeover switch may be provided.

The "mobile station" in the claims corresponds to the mobile station 7 in this embodiment. The “reception means” corresponds to the mobile station PHS communication units 11 and 13.
The “code recognizing means” means the mobile station PHS communication unit 11, 1
3 corresponds to the code recognition unit 31. The “code determining means” corresponds to the code determining unit 32 included in the mobile station circuit switching unit 15. The "communication section" corresponds to the mobile station PHS communication sections 11 and 13, and the "circuit switching section" corresponds to the mobile station circuit switching section 15.

Next, the line connection operation and connection path will be described.

Here, the cases will be described in different cases based on the positional relationship between the caller and the callee.

[1] Originating from the PHS 3 in the high-speed moving body 1 to the outside of the high-speed moving body 1 The mobile station PHS communication unit 11 is a simple mobile phone (PHS) 3.
When it receives the outgoing signal from the mobile station, it detects the code in the outgoing signal and notifies the mobile station circuit switching unit 15 of this. Based on the detected code, the mobile station circuit switching unit 15
It is determined whether or not the usage mode of the simple mobile phone (PHS) 3 is the high-speed moving object mode. If the result of this determination is that it is in the mode for high-speed mobile units, the mobile station circuit switching unit 15 and other units cooperate with each other, and the mobile phone (P
HS) 3 line connection processing is performed. As a result, as shown in FIG. 3, [a simple mobile phone (PHS) 3 on the high-speed moving object 1]
--- Mobile station PHS communication unit 11, 13 --- Mobile station circuit switching unit 15 --- Mobile station wireless communication unit 17 --- Radio base station wireless communication unit 22 in the area --- Radio base station circuit switching unit 25-
-Public line 28 --- General telephone 29] will be connected to the target telephone. The general telephone 29 shown in the figure is a telephone connected to a public line, and also includes a mobile telephone, a car telephone, and the like.

As shown in FIG. 2, a simple mobile phone (PH
Even when S) 3 is used in the high-speed moving body 1, the transmitted signal may be received by the ground station 35 existing in the vicinity of the high-speed moving body 1. However, the ground station 35 also performs the same processing such as code detection as the mobile station 7, and it is determined that the simple mobile phone (PHS) 3 is in the high-speed mobile mode. as a result,
The ground station 35 does not perform connection processing with the simple mobile phone (PHS) 3. By performing such processing, the high-speed mobile unit 1 with the simple mobile phone (PHS) 3 stopped
When it is used inside, it is not connected to the ground station 35 near the high speed moving body 1 at that time. If the simple mobile phone (PHS) 3 in the high-speed moving body and the ground station 35 are directly connected without passing through the mobile station 7 or the like, the line may be disconnected when the high-speed moving body 1 starts moving. There is a nature.

[2] Call from PHS in high-speed mobile unit 1 to other PHS in high-speed mobile unit 1 As in the case where a call is sent to the outside of high-speed mobile unit 1, the simple mobile phone (PHS). ) 3 is in the high speed mobile mode only, the mobile station 7 starts the connection process. When the simple mobile phone (PHS) 3 to be connected is in the high-speed mobile unit 1, the mobile station circuit switching unit 15 makes the mobile station PH
The S communication units 11 and 13 connect to the connection partner. The line connection path in this case is shown in FIG.

When the distance between the portable telephones (PHS) 3 is short, the portable telephones (PHS) 3 are used like transceivers without going through the mobile station 7 (or the ground station 35). It is also possible.

[3] Calling from outside the high-speed moving body 1 to the PHS inside the high-speed moving body 1 As shown in FIG. 3, a call from the ordinary telephone 29 is sent from [ordinary telephone 29--public line 28- -Wireless base station circuit switching unit 25
--Wireless base station wireless communication unit 22 --- Mobile station wireless communication unit 17 of the high-speed mobile 1 on which the portable telephone (PHS) 3 is mounted --- Mobile station circuit switching unit 15 --- Mobile station PHS communication unit 11 , 13 --- a simple mobile phone (PHS) 3] is used for connection.

When making a call using a simple mobile phone (PHS), the use mode is set to the public mode.
The ground station PHS communication unit 36 is a simple mobile phone (PHS) 3
The code in the outgoing signal of is detected. Ground station circuit switching unit 3
8 determines based on the detected code whether or not the use mode of the simple mobile phone (PHS) is the public mode. If the result of this determination is that it is in public mode, the line is connected to the public telephone line 28. After that, the connection is made through the same route as shown in FIG.

Even when the simple mobile phone (PHS) 3 is used on the ground, when the high-speed moving body 1 is located near the simple mobile phone (PHS) 3, the simple mobile phone (PHS) is also provided to the mobile stations 7 and 8.
3 outgoing signals may be received. Similar processing such as code detection is performed in the mobile stations 7 and 8, and it is determined that the portable telephone (PHS) is in the public mode. As a result, the mobile stations 7 and 8 do not perform the connection process with the simple mobile phone (PHS). By performing such processing, when the simple mobile phone (PHS) 3 is used in the vicinity of the stopped high-speed moving body 1, it is connected to the mobile station 7 mounted on the high-speed moving body 1. Can be prevented (see FIG. 2). If the simple mobile phone (PHS) 3 outside the high-speed moving body 1 and the mobile station 7 are directly connected without passing through the ground station 35, the radio base station 19 or the like, when the high-speed moving body 1 starts to move. The line may be disconnected.

Next, the processing logic of the mobile station PHS communication units 11 and 13 and the mobile station circuit switching unit 15 will be described with reference to FIG.

The code recognition unit 31 of the mobile station PHS communication units 11 and 13 selects from the received signal the simple portable telephone (P
The code indicating the usage mode of HS) is detected (step 5
0), and transmits the code to the mobile station circuit switching unit 15 (step 52).

The mobile station circuit switching unit 15 determines whether or not there is a margin in the connection line at that time (step 54). If the result of determination is that there is a margin on the line, the routine proceeds to step 56. In step 56, the mobile station circuit switching unit 15
The code determining unit 32 determines whether the simple mobile phone (PHS) 3 is in the high-speed moving object mode based on the code detected by the code recognizing unit 31 (step 5).
6). As a result, if the mode is the high-speed moving object mode, line connection processing is performed (step 58).

If the result of the determination in step 54 is that there is no margin in the line, or if the result of the determination in step 56 is that it is not the high speed moving object mode, the process proceeds to step 60, a busy tone is output, and the process ends. To do.

The processing logics of the ground station PHS communication unit 36 and the ground station circuit switching unit 38 are basically the same as those shown in FIG. However, in step 56, it is determined whether or not the mode is public mode, and the process proceeds to step 58 only when the mode is public mode.

Simple mobile phone (PH
S), when making a call from the simple mobile phone (PHS)
Table 2 shows the PHS communication unit connected to the.

[0058]

[Table 2]

○: Line is connectable ×: Line is not connectable or line is not connected △: Line may be connected while the high-speed moving object is stopped, etc., but the line will be disconnected even if the call is started. In Table 2, the "invention method" of the simple mobile phone (PHS) is a method having the function of the present invention, and the "conventional method" is not having the function. Further, the "invention operation" is an operation for performing a mode switching process, and the "conventional operation" is an operation in which a high-speed moving object mode is not provided (not used).
"Invention operation" in the "conventional method" refers to the case where the mode can be switched by the function of the conventional method (when the mode can be switched by 10-key input or the like).

The conventional system of the mobile station PHS communication unit is shown assuming that a device generally used in the past is mounted on a high-speed moving body as a mobile station.

In Table 2, it is necessary to eliminate "Δ" in order to improve the convenience of the operation of the simple mobile phone (PHS).
The conventional method of the mobile station PHS communication unit is an assumption.
By not performing the conventional operation of the simple mobile phone (PHS) on the vehicle (in other words, by providing the high-speed moving object mode of the present invention), “Δ” can be eliminated.

According to the embodiment described above, the mobile station,
Simple mobile phone (PHS) by installing a wireless base station
Can be connected to the terrestrial public network via a wireless telephone line.

Further, by providing the "mode for high speed moving body" for use in the high speed moving body, the simple portable telephone (PHS) being used on the ground is mistakenly connected to the mobile station on the high speed moving body. It is possible to prevent such a situation. On the contrary, the simple mobile phone (PHS) being used in the stopped high-speed moving body will not be connected to the ground station. Even the current simple mobile phone (PHS) already has a plurality of usage modes (business / home mode / public mode), and these modes are switched and used according to the usage environment.
Therefore, when introducing the "mode for high-speed mobile body", it is not necessary to change the configuration of the simple mobile phone (PHS) significantly. Also, when introducing the present invention, the user is not confused about how to use the present invention.

[0064]

As described above, according to the present invention, a simple portable telephone (PHS) can be used even in a high-speed moving body. Specifically, the following communication becomes possible.

Simple mobile phone (PHS) in a high-speed moving body
--- Personal mobile phone (PHS) in the public line / high-speed moving body on the ground --- Other simple mobile phone (PHS) in the high-speed moving body In addition, a dedicated mode is provided for use in the high-speed moving body. So, a simple mobile phone (PH
There is no possibility that S) is accidentally connected to the mobile station on the high-speed moving body. On the contrary, the simple mobile phone (PHS) used in the stopped high-speed moving body is not accidentally connected to the ground station.

The user does not need to use the mobile phone differently from other mobile communication such as a mobile phone and a car phone. Therefore, it is not necessary to have a plurality of types of telephone terminals, and convenience for mobile communication users can be improved.

[Brief description of drawings]

FIG. 1 is a diagram showing an outline of a system which is an embodiment of the present invention.

FIG. 2 is a diagram showing internal configurations of a mobile station 7 and a ground station 35, and mode switching when using a simple portable telephone (PHS) 3 inside and outside the high-speed moving body 1.

FIG. 3 is a diagram showing a connection form between a simple mobile phone (PHS) 3 in a high-speed moving body 1 and a public line 28 on the ground.

FIG. 4 is a simplified mobile phone (PH
It is a figure which shows the connection form of S) 3 comrades.

FIG. 5 is a flowchart showing the processing logic of mobile station PHS communication units 11 and 13 and mobile station circuit switching unit 15;

[Explanation of symbols]

1: High-speed mobile unit, 3: Simple mobile phone (PHS), 7: Mobile station, 11: Mobile station PHS communication unit, 15: Mobile station circuit switching unit, 17: Mobile station wireless communication unit, 19: Radio base station, Two
2: wireless base station wireless communication unit, 25: wireless base station circuit switching unit, 28: public line network, 29: ordinary telephone, 30: code input unit, 31: code recognition unit, 32: code determination unit, 35 : Ground station, 36: Ground station PHS communication unit, 3
7: Code recognition unit, 38: Ground station circuit switching unit, 39: Code determination unit

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Maruyama et al. 180 Totsuka-cho, Totsuka-ku, Yokohama-shi, Kanagawa Hitachi Communication Systems Co., Ltd. (56) Reference JP-A-4-335723 (JP, A) JP-A-5 -14270 (JP, A) JP-A-6-152511 (JP, A) JP-A-88801 (JP, A) JP-A-9-84126 (JP, A) JP-A-9-121188 (JP, A) ) (58) Fields surveyed (Int.Cl. ⁷ , DB name) H04Q ^7/ 00-7/38 H04B ⁷ /24-7/26

Claims (3)

(57) [Claims] 1. A mobile mode and a public mode on a mobile.
A method of connecting a communication line for connecting a simple mobile phone capable of making a call to a public line network provided outside the mobile body , wherein a call from the simple mobile phone on the mobile body accepted by the mobile station provided on the body, the onset
If the communication is performed in the mobile mode, the line connection between the public line network and the simple mobile phone is performed by connecting the line to the wireless base station connected to the public line network through the wireless line. , A method for connecting a communication line in a simple mobile phone characterized by: 2. A simple mobile phone on a mobile body and the outside of the mobile body
, A simple mobile phone that can make calls in mobile mode and public mode.
Connection of a communication line that connects with a band telephone via a public line network
A method for making a call from a simple mobile phone outside the mobile unit, using a public line network
It is accepted by the ground station connected to the
Connected to the public network if it was done
The wireless base station communicates with the simple mobile phone on the mobile unit.
Through the wireless line to the mobile station provided on the mobile unit
By connecting to a line,
A method for connecting a communication line in a simple mobile phone , comprising: connecting a line to a simple mobile phone outside a moving body . 3. The moving body is a train.
The communication line connecting method according to claim 1 or 2.