JPS63129767A - Charging system in portable telephone system - Google Patents

Abstract

PURPOSE:To attain rational charging by transmitting charging information to an exchange managing a home area. CONSTITUTION:Plural class (i) exchanges KTC-i accommodating each master set of plural portable telephone sets PID and (i+1) class exchanges accommodating plural number of the class (i) exchanges via a relay line are arranged in hierarchy and the exchange system is constituted to cover all service areas. Suppose that a Mr. A (his home area is within the Tokyo 23 urban districts) possessing a portable telephone set PID1 uses its own portable telephone set to make a call from a Mr. B's home SID2 in Sapporo to Mr. C SID3 in Tokyo, then a charging device KTC-I-2 is operated, the charging traffic depending on the talking time and distance is calculated and it is stored in a charging information storage section of a subscriber information storage section MEM as the charging to a PID1 and the information is sent to the MEM of the KTC-I-1 managing the home area of the PID1.

Description

[Detailed Description of the Invention] 3.1 (Technical Field of the Invention) The present invention provides a charging system for a mobile phone system that is portable and can make and receive calls at any location connected to a general public telephone network, a local telephone network, etc. Regarding.

3.2 (Prior art and its problems) Various types of mobile communications are currently in use in Japan, and among these, telephones that mainly transmit voice are used in various businesses such as coastal marine telephones, car telephones, cordless telephones, and factories. Communication communications are used only for internal purposes. These various mobile communications systems are operated independently, and it is impossible to make a call by bringing a cordless telephone into a car, for example. This is obvious from the fact that there are many differences, such as the frequency used and the control method of the control channel being different, and the required input electric field value of the opposing receiver being unsatisfied.

Cordless telephones generally consist of a portable telephone and a parent device that is connected to the telephone via a wireless line and to an exchange via a wired line. Furthermore, this phone and the parent device connected to it usually have a specific affiliation relationship, and the phone can communicate with parent devices other than that specific parent device even if they are located within a short distance where wireless communication is possible. Even if it is, it is impossible to communicate, and
Even if a telephone other than the telephone that is in a particular combination with the particular parent device exists within a short distance where wireless communication is possible, communication is impossible.

This is natural in a sense, and if the above impossible connection were made possible without any conditions, then
This may result in an erroneous connection, which may have negative effects such as erroneous billing or intentional transfer of charges to one's own telephone to another telephone.

If these difficulties could be overcome technologically and each person owned a single mobile phone, they would be able to make calls anytime, anywhere, from anywhere, and even from any location. The advent of a mobile telephone capable of receiving and receiving calls has long been a highly anticipated goal.

In terms of practical applications, the above aspirations have been realized in Japan today, where there are over 40 million public telephone terminals, and if you want to make a call while walking down a street, public telephones are installed everywhere. Furthermore, even in a society where you can make calls without any inconvenience, such as a car phone when you ride a car, a train public phone when you ride the Shinkansen, and a domestic ship phone when you are on a ship, the following still exist: This is for a reason.

This is because people want to own a mobile phone as their personal property and use it as their own phone. In other words, when you go to another company (someone's house), there are times when it is a great deed to refuse someone else's phone call and use it, or when you can't find a public phone on the street in the city, or when you need money or a phone card. When you are not waiting at a store, or even late at night, the red phone in front of the store becomes unusable when the store closes, and when you are in a crowded place such as a baseball field or an event venue, it is difficult to get to a place with a public phone. It would be extremely convenient if you could use your mobile phone in the same way as the phone you have at home.

The same goes for receiving calls from other people.If you can receive calls from other people anytime, anywhere, as long as you carry it with you, the convenience of receiving calls from other people will exceed the former method of making calls. Would.

In other words, if you want to make a call while you are out, you can do so from a nearby public telephone, but you do not know when or if you will receive a call at a location other than your home or office. If two people wishing to talk to each other are traveling in different locations, access may not be possible using traditional telephones.

In addition, in addition to being able to make emergency calls more easily and quickly than the current system, it would be even more convenient if mobile phones could be used for credit (credit function) or as a substitute for certificates, as described below. Dew.

Even today, there is a deep-rooted desire for the ultimate mobile phone to appear.

As a method to satisfy the above desire, various system proposals have been announced, although they are not perfect systems.

The first is a proposal to provide a "personal telephone service" (IEICE Circuit and Information Study Group Material 1N82-21). A system based on this concept (called the PID concept) is as follows.

FIG. 1 shows a conceptual diagram of a communication network based on the PID concept.

The subscriber is made to possess the above-mentioned personal number (PID) by writing it on, for example, a magnetic card. The PID written on this PID card is shared even when terminals (the terminal number is SID) are used with landline telephones, car telephones, 1-train type telephones, etc., and are made public by listing them in telephone number books, etc.

Landline phones, car phones, and all new terminals that will be developed in the future will have the ability to read the PID of a PID card and send that information to the communication network.

A centralized file or PF is installed in the communication network to store subscriber information (SID during subscriber registration, billing information, etc.) corresponding to the PID, and each terminal accesses the file and reads the incoming SID. A connection control function is provided to set up a line between calling and receiving terminals based on the following.

Each subscriber goes to
Register the incoming SID using the ID card. A person who wants to communicate with that subscriber can use the PID
When the call is dialed, the originating exchange accesses the PID file, reads out the SID that corresponds to the PID of the terminating subscriber, and transmits the call to the terminating terminal in the same way as in a conventional exchange connection. As is clear from this connection procedure, it is possible for the originating subscriber to make a direct and immediate call without knowing the whereabouts of the terminating subscriber.

Furthermore, if a call is made using a PID card, billing information is recorded in detail in the own PID file no matter which terminal is used, so there is no need to distinguish between public telephones and privately subscribed telephones.

If the above system is realized, it will be possible to make and receive calls from a fixed telephone to any location using its own PID if it is nearby. However, it is impossible to make or receive calls while moving, for example, while walking in a city area.

Furthermore, as shown in Figure 1, the centralized PID file (PF) is installed only at one location in the country, so the access traffic is heavy. For example, suppose that the file of a PID card holder living in Sapporo, Hokkaido is stored in Tokyo, which is a reasonable assumption since it is the only location in the country. Then, assume that the PID owner leaves his home, goes to a neighbor's house, and sends the PID information to a telephone terminal there. This information must then be sent to a central file in Tokyo and rewritten. That is, even though the PID owner moves only a few tens of meters, data must be transmitted back and forth from Sapporo to Tokyo, and from Tokyo to Sapporo (confirmation signal).

Since this kind of thing is carried out on a nationwide scale, it is a big disadvantage in terms of traffic volume and transmission costs.

Recently, another system proposal has been made to solve these problems (“Proposal of mobile message communication system”, Institute of Electronics and Communication Engineers communication system study group material C385-139 (19B6.1).
．． 23)).

That is, according to the above-mentioned literature, it is extremely difficult to realize a mobile phone, which is the ultimate form of communication, and the following proposal is made.

That is, the following is proposed as a specific example of mobile message communication.

In the simple Aloha system with the basic configuration shown in FIG. 2, one uplink and one downlink channel frequency is assigned to each wireless zone. Messages destined for mobile stations are sent to the base station via the digital exchange of the fixed communication network, and are sequentially transmitted as packets from the base station. The called mobile station confirms that it has received the message correctly and sends a response signal back to the caller via the base station, and the caller confirms that the message has been delivered to the other party. The mobile station stores the message and notifies the recipient of the message.

The received signal reads the stored message.

Calls are randomly generated from mobile stations. Since the same frequency is used within the same zone, collisions occur with a certain probability. When there is no response signal, the calling party retransmits. Furthermore, if propagation conditions are poor and the signal cannot be received correctly, the base station detects an error and requests retransmission.

In other words, this method uses messages (a type of telegram) instead of voice, and is a proposal for recorded communication rather than real-time communication, so it does not satisfy the immediacy required for communication, and the details of the actual system configuration etc. will not be disclosed in the future. It has not been clearly stated as an issue to be considered.

Therefore, it seems that it will take time to realize this as it requires technical solutions.

Next, there is the following technology that slightly expands the area of the cordless telephone system using conventional technology (Japanese Patent Application No. 57-74
No. 143).

That is, this technology is configured to connect wirelessly to a master station wireless device provided at a subscriber line terminal of a wired communications switching network, and to connect to the wired communications switching network via this master station wireless device. In the cordless subscriber telephone device, the cordless subscriber telephone is provided with means for encoding and automatically transmitting a subscriber number different from the subscriber line number of the subscriber line,
Each exchange is equipped with a means for decoding to which exchange the cordless telephone belongs from the subscriber address of the cordless telephone, and transmitting the location information and billing summary information of the cordless telephone to the exchange to which the cordless telephone belongs. The above-mentioned switching equipment is characterized in that it is equipped with means for transferring incoming calls or for calculating charges based on the above-mentioned information.

However, this technology was invented assuming a service area within one district or part of a city, and when targeting a wide area such as the Kanto area, Chubu area, or the whole country, the amount of signal transmission is limited. This is similar to the above-mentioned "personal telephone service", with increased technical and economic benefits. In addition, although this technology achieves the wide area coverage of cordless telephones, there is also the complexity of providing a subscriber's line number and another subscriber's line number as the cordless telephone number.

Sarasha is also considering a plan to provide a mobile communication system that would integrate the subscriber telephone systems of each mobile radio communication system and allow subscribers to connect to the communication network no matter where they are with one type of device. (see JP-A-58-151 No. 36).

The purpose of this technology is to provide a mobile communication system that can economically reduce the subscriber equipment of the mobile communication system and economically eliminate areas where services are not available. That is, each mobile subscriber device is equipped with a car telephone radio base station, a mobile telephone radio base station, and a cordless telephone base unit connected to a terminal of this switching network, each of which is connected to one wired communication switching network. It is characterized by being configured so that it can be connected to either a base station or a master unit by setting up a wireless line.

However, with this proposal, for example, even if a cordless telephone subscriber gets into a car and tries to use the cordless telephone inside the car, even if it is possible to receive radio waves from the car phone base station, the radio waves emitted from the cordless telephone will not be transmitted to the base station. It is impossible to receive it. This is because the transmission power of a mobile phone for a car phone is currently 5m, while the transmission power from a cordless telephone is currently 6m.
This is because the level is as low as 1/800 of W.

If the transmission power of the cordless telephone is increased to about 5-5, it will be possible to receive the base station and make calls. However, the burden on the battery increases, the portable time of the cordless telephone is significantly reduced, and the battery capacity increases, resulting in an increase in size, making it inconvenient to carry and impractical. Therefore, it cannot be called a mobile phone, but rather a variation of a car phone.

Therefore, it is an inconvenient system that is far removed from the mobile phone system, which allows calls to be made anytime, from anywhere, and to anywhere.

The four proposals explained above can be considered approaches to mobile phone systems, but although they partially satisfy the ultimate mobile phone system, they are inconvenient for users, and further technological development is desired. Ta.

3.3 [Definition of terms] ii! It is one of the main components of the present invention, and is carried by the user at all times, facing the mobile phone master device described later, and used for making and receiving calls by radio. FIG. 4(a) shows an example of the configuration of a mobile phone.

The radio section is equipped with multi-channel access technology, interference detection function, etc., and is equipped with various functions to ensure high frequency usage efficiency and high-quality calls. Further, the call signal is analog or digitally modulated by the modulator and transmitted as a modulated wave with high privacy to the opposing mobile phone master device through space. Furthermore, the demodulator demodulates the audio signal by a process reverse to that of the modulator and transmits it to the receiver. Transmission power is 6m-
The transmission power is approximately the same as that of current cordless telephones.

The mobile phone also has the function of displaying and storing the calling party's PID when receiving a call. The own mobile phone is given a self-identification number PID that is different from ■D added to other mobile phones or terminals of other systems. It is sometimes abbreviated as PID.

Also, in some cases, multiple mobile phones may be installed for one landline phone as described below.For example, if each member of a family of five uses mobile phones with different PIDs in a house, Mobile phones will be installed. Of course, each of these mobile phones can be taken out of the house and used independently. In order to prevent use by a third party in the event of unauthorized borrowing or theft, a password may be provided and a key function may be provided.

It is paired with the "Layer 1" mobile phone, and has almost the same functions as the cordless landline telephone currently provided by NTT, except for the following points. That is, in addition to wirelessly transmitting and receiving calls to a mobile phone used as a permanent location (home area), it can access any mobile phone, and also has the function of registering, changing, and deleting the location of these mobile phones.

Figure 3) shows the block configuration of the fixed telephone. .

In the present invention, since the subscriber line may be used by a third party, it is desirable that the subscriber line is a multiplex line that allows calls on two or more lines at the same time.

This can be easily realized if optical fiber cables or the like are used for subscriber lines. A fixed-line telephone may be housed in the same housing as a mobile telephone master device, which will be described below. Similar to prD, fixed telephones have self-identification information SID that is different from other fixed telephones. It is sometimes abbreviated as SID. In the main text, the landline phone in the home area of the mobile phone PID+ is called S I DI-H or simply SID.
It is sometimes written as +. In addition to the functions normally used as a telephone terminal connected to a PBX or a local telephone exchange (hereinafter referred to as a type 1 exchange) by wire, a landline telephone has the following additional functions.

■Display of the current location of the mobile phone (location registration location).

■ A substitute call function when a call cannot be received to a mobile phone ■ A function to forward calls to a mobile phone! Sato Eikasa 1 Opposite to the above-mentioned mobile phone, used for making and receiving calls by radio. This main device may be housed in the same housing as the above-mentioned landline telephone.

If functions are added to the current cordless telephone master device, which will be described later, it becomes a mobile phone master device. FIG. 4(b) shows its configuration diagram. The mobile phone master device is sometimes abbreviated as SID. SID the mobile phone master device in the home area
, is sometimes written.

2Mj4U is not a mobile phone used by ordinary telephone subscribers.

PBX In addition to accommodating ordinary telephones in business offices and having telephone exchange functions, it also has the function of receiving, changing, and deleting location registration for mobile phones, and the function of making and receiving telephone calls. Also PB
It is also used to refer to areas with spatial flooring dominated by X or the hardware itself that implements telephone exchange functions. In this text, it may be included and used as a type 1 exchange.

]' Lu1 usually accommodates telephones within the subscriber area such as ordinary residences, and handles calls to and from the own subscriber area. In addition to having a telephone exchange function, the mobile phone also has a subscriber information processing unit (location registration reception, change, deletion 2 billing functions, etc.) and a call originating and receiving function. Furthermore, it identifies the voice dialing signal sent from the mobile phone (a signal generated by voice as 1, 2, san-11-instead of the dial signal 1, 2, -, -9, 0) and converts it into numbers, It has AI (artificial intelligence) functions such as sending data back to a mobile phone. It usually refers to a switch housed in a local telephone exchange, and when it refers to areas with spatial boundaries such as telephones and subscriber lines controlled by the station, or the hardware itself that realizes the telephone exchange function. Also used.

It is called a terminal station in the NTT telephone network (see FIG. 5 (al)), and may be abbreviated as KTC-1.

In addition, when referring to telephones, mobile phones, etc. managed by a first-class exchange, we refer to fixed-line telephones, mobile phone master equipment, etc. that are connected to the first-class exchange through subscriber lines, and those installed opposite the same. Refers to mobile phones, general subscription telephones, etc. It is used as a synonym for the landline telephone that also manages the subordinate fixed-line power supply machines. Furthermore, the mobile phone has an interface with a first type wireless base station for wide area calling.

The higher level exchange means a second type or higher level exchange described below.

KTC-II: A first-class exchange that is located above multiple first-class exchanges and is under its own control.
In addition to having the functions of relaying calls between different types of exchanges, normal telephone calls made and received from exchanges other than one's own, and processing of subscriber information for mobile phones (location registration acceptance, change, deletion function, etc.) and telephone calls. Has calling/receiving functions. It also usually refers to a switch housed in a telephone exchange that encompasses an area that is a collection of multiple subscriber areas, and also refers to the area that has a spatial extent controlled by the same station and the hardware itself that realizes the telephone exchange function. Also used when In the NTT telephone network, it refers to a switch housed in a central office installed in each local city, and is sometimes abbreviated as KTC-II.

In addition, exchanges managed by (or subordinate to) type 2 exchanges,
When we say telephones, etc., we include the first type exchange connected to the second type exchange by a medium line, and all terminals such as mobile phones managed by the first type exchange.

Further, the upper level exchange of the second type exchange means a third type exchange connected to the second type exchange by a trunk line, or a fourth to fifth type exchange connected to this by a trunk line. .

1-star exchange (KTC-III) A second-class exchange that is located above multiple second-class exchanges and is under its own control.
In addition to having the functions of relaying calls between different types of exchanges, normal telephone calls made and received from exchanges other than one's own, and processing of subscriber information for mobile phones (location registration acceptance, change, deletion function, etc.) and telephone calls. Has calling/receiving functions. It controls areas managed by Type 2 exchanges, including areas roughly grouped into prefectures, and it also controls areas with spatial extensions controlled by Type 3 exchanges, as well as the hardware itself that realizes the telephone exchange function. Also used to mean. In the NTT telephone network, it refers to a switch housed in the central office located in the prefectural capital cities (70 cities), and is sometimes abbreviated as KTC-m.

(KTC-IV) Calls between type 3 exchanges that are located above multiple type 3 exchanges and that are controlled by themselves, including areas where several central office areas are aggregated, and calls that are normally received from other than the own In addition to relaying and exchanging functions for making and receiving telephone calls, it also processes subscriber information for mobile phones (location registration reception, modification, deletion functions, etc.) and makes and receives telephone calls. It is also used to refer to a spatially expansive area controlled by a type 4 exchange or to the hardware itself that implements the telephone exchange function. Furthermore, it has an interface with a type 4 wireless base station for wide area calling of mobile phones and a car telephone exchange for the current car phone system. NTT
In the telephone network, it refers to a switch housed in a central office; KT
It may be abbreviated as C-IV.

In our country, the NTT network has Tokyo and Nagoya nationwide.

There are eight locations including Osaka.

1) Saramata Iki (KTC-V) Located above multiple Type 4 exchanges, it has functions such as relaying and exchanging calls from Type 4 exchanges, as well as processing subscriber information for mobile phones. (location registration reception, change, deletion functions, etc.) and telephone call/receive functions. Also the fifth
It is also used to refer to a spatially extensive area controlled by a telephone exchange or the hardware itself that implements telephone exchange functions.

It may be abbreviated as KTC-V. It also has an interface with a type 5 wireless base station (satellite) for mobile phone wide area calling.

In our country, it is desirable to have one location (Tokyo). It also has telephone exchange functions with foreign countries.

A mobile phone is usually used opposite a mobile phone master device as a communication partner, but in order to make it possible to receive calls in places with poor radio wave propagation or where there is no mobile phone master device nearby, etc. It is a base station. That is, by using the powerful radio waves transmitted from the above-mentioned base stations, even basements and underground malls in cities can be covered. The size of radio waves transmitted from the first type radio base station and the installation conditions are almost the same as those of the current paging radio base station.

Type 4 wireless base stations are used to receive calls from mobile phones installed in moving objects that are moving at high speed, such as automobiles, trains, and airplanes. The size of the transmitted radio waves and installation conditions are approximately the same as those of the current paging radio base station.

Type 5 wireless base stations are installed inside satellites and can provide service to mobile phones used inside ships and aircraft flying over the ocean, and even in deep mountains such as the Japanese Alps.

These radio base stations send out paging signals under the control of the n-th type exchange that has an interface with each of them.

In addition, the ringing signal simply indicates an incoming call (ringing) on the mobile phone.
In some cases, a call is made to the nearest mobile phone master device, and in other cases, if there is no wireless equipment nearby and a call cannot be expected, communication information addressed to the called mobile phone is included in the ringing signal.

1) Types 1 to 5 of each hierarchy A function possessed within the exchange that stores various information about mobile phone users (incoming and outgoing calls 1 Sending/receiving, storing, and reading location registration 1 (special information such as information such as billing information and external credit information).

Make changes, deletions, etc. The subscriber information storage unit is subdivided into
It is divided into three parts: (1) location registration information storage, (2) billing information storage, and (2) special information storage for each subscribed sound. It may be abbreviated as MEM or memory section.

In addition, information such as the wireless channel number and SID of the parent device that communicates with the other device is stored, changed, and erased in the mobile phone master device as well as in the external mobile phone, which has almost the same function as the subscriber information storage unit. Possesses the ability to

Home area is a place where a mobile phone is permanently installed, and refers to an area with a radius of about 25 meters where it can communicate with a mobile phone parent device in a parent-child relationship. Figure 8 (al, inside the diagonal circle is the mobile phone PID
It shows the home area of I. Note that it is normal to have a fixed telephone set in the home area that is paired with a mobile telephone.

(This is not necessarily necessary.) Furthermore, all telephone charges used in the roaming area etc. will be billed to the mobile phone master device or landline telephone installed in the home area.

loam area Area when using a mobile phone outside the home area.

Roam areas are subdivided into the following five types depending on how far away they are from the home area.

Same-PBX Same PBX that accommodates the home area of the ROHM area mobile phone
areas other than the home area. Usually used by mobile phones used within companies. The area indicated by the broken line in FIG. 8 (al) is the roam area within the same PBX.

Type 1 Roam Area When using a mobile phone in an area other than the home area, which is equivalent to the local telephone office where land-line telephones are accommodated (more precisely, the area occupied by the terminals housed in the Type 1 exchange). area. The area indicated by the broken line in FIG. 8(a) indicates the first type roam area.

General residential mobile phones are often used in this area.

It is sometimes referred to as the KTC-1 roam area.

2. The area where you use your mobile phone in areas other than the 1st class ROHM area, which are managed by the ROHM area central office (more precisely, the 2nd class exchange).

It is sometimes referred to as the KTC-u roam area.

The area surrounded by broken lines in FIGS. 8-) indicates the second type exit area.

6310-An area where a mobile phone is used in areas other than the 2nd type ROHM area among the areas managed by the MUE 3rd type exchange.

KTC-1) [Sometimes referred to as the inner roam area.

The area surrounded by the broken line in FIG. 8(c) indicates the third type roam area.

4th ROHM Area Area where a mobile phone is used in an area managed by a 4th type exchange other than the 3rd type ROHM area.

It is sometimes referred to as the KTC-IV internal roam area.

The area surrounded by the dashed line in Figure 8 (dl) indicates the Type 4 Roam Area. If it is mounted on a car, aircraft, ship, etc. and its location is registered, it is considered to be in the Type 4 Roam Area.

Type 5 ROHM Area Area when using a mobile phone in an area managed by a Type 5 switch other than the Type 4 ROHM area.

In our country, this area covers all of Japan (excluding Type 4 roaming areas).

It is assumed that a mobile phone owner in Japan is also in this area when using the mobile phone in a foreign country.

This refers to the case where a current cordless telephone system parent device (also called a connecting device) is used as a wireless device that communicates with a mobile phone.

Of course, in this case, it is assumed that functions have been changed or added to the parent device of the cordless telephone so that the mobile telephone of the present invention can exhibit the intended communication functions.

By using the current pager's paging radio waves as a downlink control channel for portable mobile phones in pager mode, the system notifies the mobile phone of an incoming call and, in some cases, transmits the owner of the mobile phone to the paging radio waves. This refers to cases where

This refers to cases in which a mobile phone with 8 modes and 1 active mode is brought into a car that is subscribed to the current car telephone system, and communication is performed by connecting it to various equipment used for car phones.

Of course, in this case, it is assumed that functions have been changed or added to the car phone system so that mobile phones can be used.

Each of the above four mobile phone modes refers to a case where communication from the mobile phone of the present invention is possible using a part of the radio telephone equipment installed in each mobile body. Of course, this assumes that the current equipment has had its functions changed or added.

One-band telephone in wide calling mode.
4 or 5) It means that it is in a state where it can receive radio waves transmitted from a wireless base station.

Rather than using a mobile phone in authentication (owner identification) mode as a communication terminal for making calls,
This refers to cases where it is used as a cash card for credit, various certificates, or cash withdrawals from bank accounts. Of course, even in these cases, the communication functions of the mobile phone can be effectively utilized.

3.4 (Objective of the Invention) The present invention provides a new concept that can be approximated as an ultimate mobile phone that can be realized in the relatively near future based on a new concept for the partially satisfied mobile phone system described above. This system realizes a billing system for mobile phone systems.

3.5 (Structure and operation of the invention) 3.5.1 Functions and characteristics of each main part (device) of the mobile phone system used in the present invention Figure 3 (a) shows the mobile phone system that is the premise of the present invention. The configuration is shown when it is implemented inside a general residence or office building.

Figure 3 (Class 1 switchboard (KTC-I) is on the lower left side of al.
This is connected by a subscriber line to the mobile phone master device in the house on the lower right side of the figure.

A mobile phone master device, etc., which is the main component of the present invention, is installed in a house, and this and the mobile phone are connected wirelessly, and the fixed phone is connected by wire.

Regarding the former, the upper part of Figure 3 also shows the main components of the mobile phone master device and the inside of the mobile phone, and the frequency band used may be any frequency as long as it is suitable for mobile communication, but here, for the time being, Same as NTT cordless phone 250/
The frequency band is 400MHz.

FIG. 3(b) is a block diagram showing the configuration of the fixed telephone. In the figure, the mobile phone master device is connected to the hybrid H on the left. The configuration of the fixed telephone will be explained below. In FIG. 3(b), the dialing and signal transmitting section 1 is used when making a call, but it also includes a transmitter T and a talkie section for service in the case of no one's presence. SI so that dialing signals can be sent
D. A PID storage unit is attached. Further, the dial and the signal sent from the signal transmitting section are not only stored in the calling information storage section 3 but also displayed on the display section 10 under the control of the control section 4. Also, information on the location registration destination when absent (SID, PID)
Provided for incoming call forwarding using . On the other hand, incoming calls to this landline phone are either when the power switch of the mobile phone installed as a companion to this phone is off, that is, it is not in a standby state, or when the phone is not in the home area and is somewhere in the roaming area. This is done when the mobile phone is in the area but cannot receive calls to the mobile phone due to the power being turned off or for some other reason, and the calls are forwarded at a certain timing. In this case, the signal receiving section 2 operates, the calling bell B rings, and when the user picks up the receiver, the user can hear the other party's voice from the receiver R, and a call is started. Further, the incoming call information received as described above is stored in the incoming call information storage section.

In this system, the system is configured so that the mobile phone master device can communicate with any mobile phone in the callable area, so even if you are at home and try to use a mobile phone PID or a landline phone (SIDE), it will not work. Considering the amount of traffic, if the mobile phone master device facing the mobile phone is communicating with another (third party) mobile phone, the possibility of this happening is small, but it does occur with a certain probability. Therefore, there is no problem if there are two or more call channels, but in the introduction stage, one
In some cases, a call is not possible, and in this case, a message indicating that a call cannot be made is displayed on the display unit 10 of the fixed telephone. This is because when the mobile phone main device is in use, a busy signal is sent from the subscriber line interface circuit in the mobile phone main device shown in Figure 3 (al), so this signal is sent to the signal receiving section 2 of the fixed telephone. This is done by receiving the information and displaying it on the display unit 10 according to instructions from the control unit.

Additionally, in this case, the owner of the landline phone can send a call end request signal using the dial and signal transmitter of the landline phone to urge the third party to end the call early. It is. This signal is then transmitted to the mobile phone master device, and from the mobile phone master transmitter shown in Figure 4) uses the upper or lower frequency band of the audible sound or call signal to be sent as a control signal to the mobile phone that is communicating. communicated.

The internal configuration of the mobile phone is shown in FIG. 4(a), and as will be described in detail later, it can be heard as an audible call end request signal from the receiving section in the figure, or the end call signal can be heard in the call acceptance/reception display section. Displays that a talk request signal is coming.

As a result of the above, if a mobile phone user moves from one place to another by about 20 to 25 meters, a new communication path will be set up with a new mobile phone master device installed there, and the conversation will continue. If the user continues the call at the same location even though he/she is aware that the call end request signal is coming, the timer 1- After a certain time due to 7, a call disconnection signal (end signal)
is sent to the mobile phone and the call is terminated.

Next, the mobile phone master device will be explained. The left side of Figure 4) shows the internal configuration of the device. This device is connected to the subscriber line and the fixed telephone on the left side through the subscriber line interface circuit 1-8. Further, the telephone signal is connected to the transmitting section 1-5 and the receiving section 1-2 via the control section, and the control signal is transmitted via the control section 1-3 to the 6 synthesizer oscillators 1-4 to receive the desired signal. is used to capture the communication CH.

In addition, the timer 1-7 in FIG. 4(b) is not only used to obtain billing information when a call is made from a mobile phone, but also works in conjunction with the control signal generator 1-6 to notify the mobile phone user during a call. Used to create timing for sending a call termination request. In addition, if the mobile phone user moves during a call, the mutual distance between the mobile phone and the mobile phone's parent device increases, the electric field input to the mobile phone decreases, and the quality of the call deteriorates ( This detection is carried out by the electric field level determination section 1-9.
It has a function of sending a channel switching request (or disconnection) signal from the control signal generating unit 1-6 (performed by 1-6) to the mobile phone to search for the nearest new mobile phone master device.

Next, the internal structure of the mobile phone will be explained using FIG. 4(a).

In the figure, the reception and transmission mixer outputs on the left end of the mobile phone master device are connected to an antenna, so that they can communicate wirelessly. That is, the received signal from the mobile phone master device passes through the reception mixer, the amplifier, and the amplified signal before entering the demodulator. A part of this output is used by the call bell section (2). This ■ is the nth call for a mobile phone wide area call as described later.
It is designed to ring when it receives a signal from a seed wireless base station (n=1.4 or 5). Further, the remainder of the demodulator output is sent to the handset/receiver section and the control section. The signal sent to the receiver is used to drive the handset.

Next, the operation of the control section will be explained. First, the receiving frequency synthesizer is controlled to capture a downlink control channel sent from a mobile phone master device or the like.

If this fails, it is determined that the mobile phone is in a dead zone, and the mobile phone is caused to capture the control signal from the wide-area calling radio base station of type n. If a calling signal is received in this state, a ringing tone will sound. Then, it tries to capture the control signal from the mobile phone master device. If this is successful, a blue lamp (OK) is displayed on the call availability display section, and if it is unsuccessful, a red lamp (NO") indicating that calls cannot be made or received is displayed. The control section also gives instructions to the transmitting frequency synthesizer, In addition to making it possible to generate a specified frequency for calls (or control), the roam area call information storage unit and self-I
Controls the D (PID) storage unit.

The control unit also has the following functions. If your mobile phone is in your home area and you try to make a call using your mobile phone, if the opposing mobile phone parent unit happens to be communicating with a mobile phone from another roaming area, the call will be made from that mobile phone. In order to indicate that a call cannot be made, this function also displays a red lamp (NO) on the call availability display section. In other words, even though the mobile phone requests the mobile phone master device to allocate a call channel using the uplink control channel, there is no response (because it is being used by another device), and as a result, calls are made at a certain timing. This is because it is determined that the application is not acceptable and is displayed on the display unit.

However, if the mobile phone can make calls on two or more channels at the same time, the above explanation is unnecessary because one of the ICHs will be assigned to the dedicated CI of the mobile phone in the home area.

In principle, the mobile phone can display and store the PID of the calling party that is communicating with it, but it can also display subscriber information such as the SID of the mobile phone master unit that is communicating as a wireless device. There are times when you want to know.

In this case, when you press the function button (for example, #) on the dial part, the SID of the mobile phone parent device during the call can be determined by the control part from the information stored in the roam area call information storage part, and the nearest information.
That is, the SID of the mobile phone parent device currently performing the call is displayed. Also, if you are not on a call and are simply registering your location with the mobile phone's master device and are on standby, you can simply press the function button (for example #) on the dial to display the opposing SID without the need to emit radio waves. It becomes possible. This can be used for directions other than the mobile phone communication used in the present invention as described later, for example, when you get lost,
It is convenient because it can be used to display lot numbers.

Even if the phone number of the other party is not clearly known on your mobile phone, if you know part or all of the address of the other party, you can send the address of the other party by voice to the opposite Class 1 exchange. Then, the voice signal identification unit built into the first-class exchange equipment identifies it, and for confirmation, the prefecture ID, city ID, town ID, etc. described later are sent back as numbers, and the call can be displayed. It has a display section.

To send signals from a mobile phone, dial signals, voice signals, control signals, etc. are input to the modulator according to instructions from the control unit.
The signal is added to the transmission amplifier, and after being amplified, passes through a MIX circuit to convert the frequency to a frequency designated by the control section, and then is added to the transmission antenna.

The external functions and configurations of the mobile phone a device, fixed telephone, and mobile phone have been described in detail above, and finally, as a summary, the basic functions of the mobile phone system using these in the present invention will be explained.

i) In the place where it is normally used (at your seat in your home or office, hereinafter referred to as the home area), it operates in the cordless telephone mode currently being commercialized by NTT.

1i) In many cases, a fixed telephone set having an SID number is provided to be paired with the mobile telephone set in i).

The connection to the telephone office line is similar to that of a regular telephone, but unlike a regular telephone, the fixed telephone of the present invention has various functions such as an incoming call transfer function and a function of displaying the current location of the mobile telephone.

iii) Each mobile phone is given a P'ID (self-identification number) that is different from other mobile phones or other system terminals, and when a call is made or a request is received from the mobile phone master device, the P'ID is automatically It sends its own PID signal to. (The PID of the mobile phone is PID.) iv) When a call is made in a place other than the home area, the roam area SI sent from the mobile phone parent device that is facing the other side of the call.
D (terminal identification number) is stored in the "Roam area call information memory section" of your mobile phone.

(2) When the mobile phone is turned on, it automatically transmits its own PID number using the transmission control channel of the cordless telephone mode in the home area.

This is called "location registration" in the home area or roam area. The operation flow in this case will be described later.

vi) If the mobile phone is in wide-area calling mode and receives a call, but there is no mobile phone master device nearby and the call cannot be answered, the calling party number is transferred to the own PID for a certain period of time.
It has the function of storing roaming area call information in the roaming area call information storage unit of the caller, and responding to the caller when the caller becomes available due to movement of location.

Next, the first feature, which is one of the characteristics of the mobile phone system used in the present invention, is
The subscriber information storage units installed in type 5 to type 5 exchanges will be explained. Figure 5 (al indicates the stratified structure of Type 1 to Type 5 exchanges. In other words, Type 1 exchanges include mobile phones, fixed-line telephones, general electric chargers, etc., as stated in the definition of terms. For this purpose, a subscriber information storage unit MEM is installed.The second type exchange is connected to a plurality of first type exchanges by transmission lines as shown in the figure, and a subscriber information storage unit MEM is installed. MEMs will also be installed in higher-level exchanges as shown in the diagram, and the subscriber information storage units installed at each of these levels will be used to store mobile phone location registration requests, billing information, etc., as described below. They communicate with each other and have a distributed storage function, which is a feature of the present invention.

3.5.2 The configuration principle of the mobile phone system used in the present invention and the rationale for its validity In this section, the arrangement method of the subscriber information storage unit MEM distributed in the exchanges of each hierarchy is compared to the centralized arrangement of the prior art. The superiority of this method compared to the law will be described, and the method for assigning personal identification information PID will be explained later.

First, the functions of the subscriber information storage unit (MEM) will be explained.

3, 5.2-1 (Functions of the storage section for subscriber information (information on location registration 2 billing, etc. by PID) installed in each hierarchical exchange) i) Received from a mobile phone via a parent device, PBX, etc. It stores subscriber information and transfers the information to an upper station or lower station as necessary.

1)) When the exchange receives new subscriber information from the mobile phone due to a change of location, etc., it compares it with the previous information, rewrites or deletes the stored information, and, if necessary, sends the information to the upper or lower station. Transfers new subscriber information to the station.

iii) If subscriber information such as the following items ① and ② is stored in advance on a mobile phone, even if a location registration request signal is received from the mobile phone, the location registration request signal will not be registered based on the previously stored subscriber information. The mobile phone performs location registration, call control, etc.

■ 蒐1 菉轲 beans Location registration is not performed and therefore calls cannot be made or received.

In this case, if necessary, information indicating that the location registration of the mobile phone has been rejected is transferred to the lower or (and) upper exchange center.

■Limited reception of standing records In order to restrict calls to and from the mobile phone, location registration requests are accepted within a certain limited range.

(i.e., limiting the time of making or receiving a call, limiting the available time in a day for making or receiving a call, etc.) iv) There is a landline phone that corresponds to the home area of the mobile phone. Perform unattended forwarding when necessary.

■) Connecting lines by class in case of abnormal traffic; vi) Identifying the method and type of location registration of mobile phones, and determining the calling method in the case of incoming calls (wide-area call, narrow-area call, etc.) vi) Based on the contract with the subscriber and the third party organization regarding the information stored in the special information storage unit for each subscribed sound, transmitting the necessary part of this information to a third party; vii) Mobile phone If the telephone is equipped with a function that allows calls to be made and received using different media services, the communication status of the communication by different media shall be memorized; X) Subscriber information of each tier exchange 3.5.2-2 (Function of mobile phone master device subscriber information storage unit ) i) Captures the downlink control signal transmitted from the mobile phone master device (SID, .) and stores the PID of the mobile phone that has requested location registration in the PID signal storage section within its own device; The mobile phone is currently SID for the opposite landline phone and KTC-1.

Notify that you are registering your location.

ii) If the input power value falls below a certain level because the mobile phone that is in the middle of a call via its own mobile phone parent device moves away due to walking, the system will shift to the mid-call channel switching operation described later, but the channel Even after the switching is completed, the PID is stored in the PID signal storage section within the own device for a certain period of time.

This is to prepare for resetting the communication channel between the device itself and the mobile phone in the event that channel switching during a call fails.

iii) Also during parent-child communication, the parent/nucleus (mobile phone)
The start and end times of the call are notified to the subscriber information storage section of the first type exchange along with the PrD information.

3, 5.2-3 (Functions of the fixed telephone storage section) i) Stores call information from the fixed telephone and transfers the stored contents according to a request signal from the outside KTC-I, which provides information to the display section if necessary. do.

ii) When the mobile phone is in a roaming area and there is an incoming call but no call is received, the information about the incoming call being forwarded is stored at a certain timing.

iii) When a mobile phone registers its location in the ROHM area, this information will be sent to KTC if the function has been set in advance.
-Receive and store from I-1.

3, 5.2-4 (Function of mobile phone call information storage unit)
i) Store location registration information of a mobile phone and call information from the mobile phone in the roam area.

1)) Store incoming call information to the mobile phone in the roam area.

iii) The self-ID storage unit stores self-PID information, PIN numbers, and IDs necessary for credit and various certificates.
Memorize information, etc.

Further, necessary information among the information stored in the self-ID storage unit is transmitted in response to a request signal from the KTC-1.

From the above, the function of the subscriber information storage section has been clarified, and the location registration of the mobile phone, which plays a major role in the present invention, will be explained below.

In order to be able to make and receive calls to and from other telephones at all times while carrying a mobile phone, which is one of the main devices of the mobile phone system used in the present invention, and moving around the country, it is necessary to Technically speaking, it is necessary to constantly monitor and remember which mobile phone master device it is possible to communicate with. This task is carried out by the mobile phone master device and the 1st to 5th class exchange subscriber information storage units (MEMs).

Location registration is classified into the following six cases depending on the distance from the home area of the mobile phone.

i) Location registration in home area When the mobile phone is powered on in the home area, this registration operation is started. 1) FIG. 1(a) shows the operation flow in this case. The following will be explained using Figure 1) (al). In the figure, when the power switch of the mobile phone PID+ is turned on, the downlink 1Bch of the mobile phone master device SID in the home area is captured, and the uplink control is performed from the PID. A location registration request signal is transmitted using the CH.The mobile phone master device SID receives this and stores it in its own memory, and also transmits the PID addressed to the first type exchange KTC-1-1.
+ sends a location registration request signal. KT who received this
The subscriber information storage unit of C-1-1 stores in the location registration storage unit, which is a part of this configuration, that the location of PID is registered in the mobile phone master device SID in the home area. . When this is completed, a location registration completion signal addressed to the mobile phone parent device is sent. Upon receiving this signal, the 5IDI checks the PID in the signal and sends a signal indicating completion of registration of the mobile phone PID and all destination locations. The PID that received this,
examines the signal content and stores sro+.

The above operation flow completes location registration in the home area.

1)) Location Registration Method in Type 1 Roam Area The operational flow of location registration in Type 1 roam area will be explained using 1) Diagram). In the figure, the mobile phone PrD
When the power is turned on, it sends a location registration request signal to the opposing mobile phone master device SID in the same way as described above. When 5ID2 received this and inspected the PID and signal, S
Recognizing that it is not the mobile phone (PIDg) facing ID2 but a third party mobile phone in the Roam area,
It stores the PID in its own memory and sends out a location registration request signal addressed to KTC-1-1. KTC- which received this
I-1's MEM uses SID for location registration.

5IDt is changed and stored, and a completion signal addressed to 5IDt is sent. The following operations proceed in exactly the same manner as in FIG. 1) (a), and the location registration of PID and SID is completed.

Next, the position registration operation when walking and moving within a type 1 roam area while keeping the mobile phone PID in the power switch-on state will be explained using Fig. 1 (C1).

In the figure, the mobile phone PIDI is captured as the downlink control CH from 5IDE, but as the user walks, the input electric field value decreases and eventually falls below a certain reference value. Then P
At IDl, a search for acquiring another control channel is started based on the information from the noise level detector (see FIG. 4(a)).

As a result, 5ro discovers that the input electric field value of the downlink control CH transmitted from the mobile phone master device 5ID2 satisfies a certain standard and stores it in its own memory as a location registration.
Change it to z and rewrite it to SrD and 3. It also sends a location registration request signal to the SIDs. The mobile phone master device 5ID3 that receives this signal stores the PIIIh and sends a location registration request signal to the KTC-1-1. The following operation is the same as that in FIG. 1(b).

iii) Location registration in Type 2 roam area 1)
The operation flow will be explained using FIG. Now, when KTC-1-2 inspects the content of the location registration signal, it recognizes that the PID is not a mobile phone managed by KTC-I-2, and stores it in its own location registration storage section, as well as the PID. KTC-1, which manages D.
)-1 sends a location registration request signal. Upon receiving this, the MEM of KTC-If-1 stores the signal contents in the upper position registration storage section of the inspection, and then sends the PID to KTC-I-1, which manages the PID. I-2
Request to remember that the location is registered in 5ID4 managed by . Upon receiving this signal, KTC-I-1 inspects the signal content, stores it in its own location registration storage section, and reports to KTC-n-1 that location registration has been completed. Upon receiving this signal, KTC-II-1 verifies its own location registration with the stored contents of the memory, and then sends a location registration completion signal addressed to KTC-I-2. The following operations are shown in Figure 1) (
C) follows exactly the same process as PID, 5IDa
Location registration is complete.

iv) Location registration in Type 3 roam area 1) Figure (
The operation flow will be explained using el. In the location registration operation flow in the same figure, from PID and power switch on to K
The operation up to signal transmission to TC-II-3 is shown in 1) Figure fd.
It is exactly the same as +.

Now, the location registration request signal sent to KTC-ff-3 is inspected and stored in the MEM of KTC-n-3. Further, as a result of the inspection, it is found that the PID+ is not a mobile phone managed by the KTC-II-3, so a location registration request signal is sent to the upper exchange KTC-1)[-1. KTC-1) 1-1 which received this signal recognizes that the PID is managed by its own exchange and stores it in its own MEM. It also sends a location registration request signal to KTC-II-1. The following operation follows the same process as in Figure 1) (dl) and the SID of PID and
, location registration is completed.

■) Location registration in Type 4 roam area 1) Figure (f)
) shows the operation flow in this case. The same figure and 1) figure (e
) The only difference between this and FIG. 1) is that a type 4 exchange is involved, and the other operations are exactly the same as in FIG. 1) (e).

vi) Location registration in Type 5 roam area 1) Figure (
gl indicates the operation flow in this case. Figure 1 and Figure 1)
The only difference from fl is that there is a type 5 exchange, and the other operations are exactly the same as in Figure 1) (f).

In addition, in the above explanation, KTC in Figure 1) (e)
-II-3, 1st) KTC-II-4 in Figure (f)
and KTC-1) [-4, 1st) Figure (K in gl
TC-II-5, KTC-1[r-5, and KTC-
It is not necessarily necessary to store the location registration information of the PID that has requested location registration in the MEM installed in each of the IV-5s, and even if it is omitted, the effects of the present invention will not be affected in any way. isn't it. However, by storing location registration information in these exchanges, which may seem redundant, when a PII)+ is in a roaming area and there is an incoming call from the same type of roaming area, the roaming area By simply searching the MEM of the managed exchange, there are advantages such as being able to set up a communication path between both parties without having to go to a higher-level exchange. Therefore, M.E.
Considering the current situation where the economic efficiency of M is increasing, it is considered reasonable to store registration information in the MEM of all exchanges involved in location registration.

Finally, as an example of the operational flow when canceling (changing) location registration, the operational flow when PIDI, which has registered a location in a Type 5 roam area, changes its location registration to a home area will be described below.

vi) P whose location was registered in the 5th type ROHM area
How does IDt change the location registration to the home area? In practice, a case like this occurs when a person living in Tokyo travels to Hokkaido with a mobile phone and uses the mobile phone in various places during the implementation period. This applies to cases where the mobile phone is turned off on the way back, taken back to Tokyo, and then turned on at home the next day.

In this case, the location will be registered in the home area of Tokyo again, and the operation flow will be as follows. It is as if the flow is completely the opposite of the location registration operation flow in the type 5 roaming area shown in Figure 1 (phantom).
IDE, KTCn 5 (n=1.2.3.4.5)
, M of KTC-n-1 (n=1, 2.3.4.5)
The location registration for all PIDs in EM is to change (delete) 5ID7. In other words, SID+
The PID is stored in the storage section of , and is PID7 of the 5th type ROHM area.
The location registration is changed to the home area, and the PID informs the KTC-1-1 that the location registration is requested from the PID to the SID. KTC-1-1 searches for MEM, changes its own MEM, and
Request T-1 to change (delete) location registration. KTC-■-1, which received this signal, sets the PID of its own MEM,
Delete the location registration information related to KTC-m-1
Request a change (deletion) to the location registration. Hereinafter, the SID mentioned above.

PID from MEM of exchange other than KTC-1-1.

All location registration information will be deleted.

The above explanation has clarified the location registration operation of the mobile phone, and as described above, in the mobile phone system used in the present invention, the location registration of the mobile phone is always performed.

Moreover, the location accuracy of this location registration is extremely accurate at 25 meters in cordless telephone modeb.Therefore, it may be a good idea to monitor the current location of insurance agents, salesmen, etc. using electronic bulletin boards in business offices, etc. For example, give these people mobile phones and call them to the nearest type 1 exchange (KTC-I).
) This is easily possible if you receive location registration information from ).

Next, a billing method for a mobile phone system according to the present invention will be explained. The principle of billing in this system is that the caller is charged the same as in a normal telephone call. In this case, the caller's mobile phone is taken to a nationwide location and calls are made to any location from there, so charges must be paid based on each situation. In other words, people who have a home area in Tokyo (A
When Mr. A goes to Sapporo, Hokkaido and calls a friend in Sapporo, it is unreasonable to charge a call fee between Tokyo and Sapporo, which is Mr. A's home area. It must be charged as a telephone charge.

Conversely, if Mr. 8, who lives in Sapporo, comes to Tokyo and calls his family in Sapporo, he will be charged the long-distance call between Tokyo and Sapporo instead of the Sapporo local call charge. There must be a charge for doing so. In other words, it is necessary to perform this for the mobile phone and the distance (administrative division) from the current location to the incoming call location. The distributed arrangement of the subscriber information storage units of the present invention exhibits an effect that is very suitable for this purpose. The billing system will be explained in detail below using Figure 7 (C1). In the figure, Mr. A (whose home area is within the 23 wards of Tokyo) who owns a mobile phone PID is on a business trip to Sapporo, Hokkaido. Assume that you are currently staying at Mr. B's house (SID, ).Moreover, you are using your mobile phone to communicate with your friend Mr. 0 (SID, ) in Tokyo.
1).

In this case, the billing device of KTC-1-2 operates, and the billing frequency determined by the call time and distance from the start to the end of the call is measured, and the result is stored in the billing information storage unit as the bill for PID. Therefore, this information is immediately sent to the PID,
may be sent to the MEM of KTC-1-1, which manages the home area of
It is better to store the location registration in the KTC-1-2 MEM for a certain period of time such as a week or until the PID is deleted from the Type 4 roam area for the following reasons.

That is, ■ Type 4 roam area (n = 1.2.----.5
There is a high possibility that you will make multiple calls while you are in the home area. It is.

(2) If the billing information for each call is to be sent immediately after the end of a call, there is a high possibility that it will be during the day when traffic is congested, which is not a good idea as it will increase the convergence.

On the other hand, if billing information for a certain period is to be sent all at once, it is efficient to choose a time such as late at night when there is less traffic.

■If the mobile phone transfers to an area (KTC-I-3 in Figure 7 (C)) managed by another switch within the same type of roam area and makes a call, the switch that manages the same type of roam area If billing information is collected and stored in the MEM of KTC-IF-2 (MEM of KTC-IF-2 in the figure), the advantages of (1) and (2) above can be utilized as is.

Please note that the billing information is KTC-I-2 or KTC-n-
The transmission from the MEM of PID 2 to the MEM of KTC-1-1, which manages the home area of PID, is 1 day or 1 day.
When sending in units of weeks or months, PID,
The location registration is from Hokkaido to home area KTC-1-1.
In both cases, the exchange 4ffi (MEM) that stores the billing information takes the initiative (as mentioned above, a request to delete the PID+ location registration is received from KTC-1-1). ) and implement it.

As described above, the present invention has wide application fields other than communications.

In order for the mobile phone type location registration used in the present invention to be effective, it is a premise that the mobile phone is in a standby state (power on). Considering the current situation where IC circuits and high-frequency circuits are becoming increasingly low in power consumption, it is desirable to keep the power of the mobile phone turned on once the user leaves the home area. If these conditions are satisfied for all mobile phones in the ROHM area, new service methods such as those described below will become possible.

■Communication in emergencies such as tsunamis and typhoons will be possible for each individual.

■ Even if the location of an important person (VIP) is not registered for some reason, it is possible to call the person in wide area calling mode (using satellite).

■It becomes possible to communicate with salesmen, doctors, etc. when they arrive at a designated municipality. Conversely, when the user leaves a certain area, information on location registration changes can be automatically transmitted to people in the home area, such as an office or business office.

■A scheduled service, that is, a service that broadcasts market information registration at a fixed time every day, will become possible for people traveling across the country.

■Emergency communications from mobile phones can be carried out effectively.

Below, these usage methods will be explained in detail with specific examples.

■Emergency communication from the mobile phone owner If the mobile phone owner feels unwell at home or on the road, and is judged to be suddenly ill, use the pre-installed emergency call button on the mobile phone or the emergency call button. For example, if you decide to dial 9 for communication,
When the emergency medical center receives this, the current location information of the mobile phone is transferred from KTC-I, and an ambulance can be sent directly to the scene. Currently, elderly people are given something called an "emergency pendant." In the event of an emergency, when you pull the pendant at home, an SOS radio wave is emitted from the radio installed inside the pendant, and the signal received is sent to the emergency medical center. A system is in use in which emergency services are dispatched to the area and an ambulance is dispatched to the area, but the present invention is equivalent to a highly functional version of this system that expands the service area to a nationwide scale. Similarly, if there is a fire in your area, you can make an emergency call by e.g.
) Just dial 9 and say "fire" (this doesn't necessarily have to be said either, it can be something like a dial signal),
Unlike the current system, there is no need to provide detailed explanations of place names, lot numbers, and the state of nearby buildings when people are mentally disturbed. At the firefighting center, the registered location of the caller can be displayed on the electronic display board, allowing the caller to be immediately dispatched to the fire scene.

In addition, when reporting from the scene of a crime or traffic accident, for example, by dialing 1) 0 from a mobile phone, the police car command center can clearly recognize the current location of the mobile phone and carry out effective operations. It becomes possible.

■Detecting the current location of elderly people with dementia As Japan's population ages and the elderly occupy a larger portion of the population, the increase in the number of elderly people with dementia is becoming a social problem. In particular, groggy old people who wander around roads and parks day and night, unsupervised by their family members, become a nuisance to the public, are more likely to be involved in traffic accidents, and place a heavy mental burden on the family members who walk around looking for them. The mobile phone system of the present invention provides great benefits in this case as well.

In other words, if an elderly person with dementia is given a mobile phone (powered on), even if he or she goes outdoors alone and walks around town, it will be
By providing the current location of the mobile phone to TC-I, discovery becomes very easy. Similarly, if you go to a large amusement park and have your child carry a mobile phone, it will be easier to find him if he gets lost.

The subscriber information storage section of the N-type exchange used in the explanation of this chapter above has sufficient storage capacity and always stores new information, but if the storage capacity becomes saturated or a failure occurs, the PID Location registration may not be performed. In this case, the adverse effects on the effects of the present invention can be eliminated by having another exchange store the location information in the following priority order. That is, if the MEM of the n-th type exchange that manages the roam area becomes impaired, the n+1-th type exchange takes over the storage. If the higher-level exchange is also unable to memorize due to a failure, etc., then the MEM is sent to the higher-level exchange and finally the 5th type exchange.
Try to remember. If the MEM of the 5th type exchange cannot be stored, location registration is executed to the mobile phone master device or fixed telephone (SID+) in the home area.

In such a state, if an incoming call is received, it will be sent to the SI through the transmission line.
After adjusting the current location to D, the call is made from the exchange that manages the area where the mobile phone is actually located, so the control signal is detoured considerably, but the call is executed without any problem.

Now, with the above explanation, the nth type exchange (n=1.2°3.4
It has become clear how the subscriber information storage section installed in 5) and 5) plays an important role. Therefore, we will calculate the traffic and amount of memory required to use this storage section below, and explain the advantages of the distributed method over the conventional centralized method.

3, 5.2-5 (Location registration traffic and required memory amount) The mobile phone in the mobile phone system used in the present invention can be carried anywhere in the country and calls can be made and received from there. However, as the mobile phone moves, it is necessary to register the current location at all times in order to ensure the availability of calls at all times.

Further, it will be explained in detail below that even if this method is executed, it is much more efficient and economical than the conventional techniques, and is highly rational in accordance with the user's habits.

First, to give an overview of the explanation, mobile phone users in Japan (this can be expressed as Japanese citizens in general) spend most of their time at their personal residences or workplaces. The amount of time an individual spends going out is relatively small, and the longer the distance an individual leaves from their usual place, the more the frequency of going out and the amount of exclusive time they spend will drastically decrease in inverse proportion to this (more on this later). (according to literature).

In other words, for example, in the case of a businessman working in an office, etc., he spends most of his time at his desk (desk), and even when he is away from his desk, he still spends most of his time at his desk.
Even if you only stop by a conference room within your business or another workplace, and you bring your own mobile phone with you at that time, your location will be registered to PB.
The process is completed by simply changing the location registration information in the subscriber information storage section of X or the first type exchange. Furthermore, the transmission and reception of signals necessary for this is completed between the mobile phone, the parent device, and the PBX (or the first type exchange), and is not affected by anything else.

Next, assuming that a businessman goes out of the office for business, in most cases he can return to the company after about half a day, and in most cases it is only a day trip at most. In terms of the type of exchange according to the present invention, it is often completed within the same city (type 2 exchange control area) or within the same prefecture (type 3 exchange control area), and business trips outside the prefecture (type 3 exchange control area) are common. Furthermore, the possibility of a long-distance business trip from Tokyo to Hokkaido (class 5 exchange area) is extremely small.

The above situation is not limited to businessmen.

For example, when looking at the total time spent by housewives in daily life, the proportion of going out is small, and most of the time when a housewife does go out, she can do some shopping or other errands in the neighborhood, and other errands can also be done within the same city or within the same city. Most cases are completed within the same prefecture, and trips to other prefectures are extremely rare.

Furthermore, the frequency of going out at home (-household) for leisure, etc. is extremely low, as will be described later.

From the above circumstances, it is understood that the frequency of use of the subscriber information storage section (location registration storage section) of the upper exchange, and therefore the frequency of signal transmission required for these registrations, is extremely low. Therefore, considering the national character of our country (this also applies to people in other countries around the world), decentralized location registration as in the present invention is the best way to match the user's habits when carrying a mobile phone. It is judged that.

This point can be said to represent a feature of the present invention that is completely different from the prior art where subscriber information is collected and managed at one location nationwide.

Now, I will explain the daily behavior of the general public in detail with reference to literature (National Travel Dynamics Survey Report, compiled by the Prime Minister's Office, October 1988). That is, hereinafter, based on this report, the amount of traffic in which mobile phone owners are registered in the storage units of the first to fifth type exchanges of the present invention will be calculated.

a) Types of travel, travel experience rate, and number of trips in 1930
In the one year period from September 1955 to August 1956, 66.
0% are traveling overnight. (Table 1) Looking at the experience rate of overnight trips by type of trip, 45.9% were purely sightseeing, 7.1% were business trips, 13.8% were homecoming trips, and 9.1% were trips for housework/private purposes. % etc. When pure tourism and combined tourism are combined, 53.3% travel overnight.

Table 1 Experience rate and average number of trips by type of trip Looking at the number of overnight trips, the average is 1.683, and when looking at this by type of trip, pure tourism is 0.821 times, 4 of the total.
It accounts for 8.8%. Business trips accounted for 0.180 trips, homecoming trips accounted for 0.235 trips, etc., and pure tourism and combined tourism totaled 1,030 trips, or 61.2% of the total.

Next, the average number of travel days per person per year is 4.92.
It is day.

b) Regarding flows between districts (blocks) Looking at destinations by block from the travel departure point, as shown in Table 2, the proportion of intra-regional travel is high in all blocks.

C) Regarding overseas travel, the rate of experience of overseas travel per person for the year from September 1980 to August 1981 was 2.0%. Additionally, the average number of overseas travel days per person per year is 8.6 days.

d) Regarding day trip tourism and recreation 1981.
As a result of surveying day-trip tourism and recreation in winter and summer during the two months of February and July and August, looking at day-trip tourism and recreation per household, the experience rate for "winter" was 32.4%; The experience rate for “summer” is 43.
It is 6%. "Summer" exceeds "winter" by 10 points. The average number of one-day recreational trips per person is 0.659 in winter and 0.95 in summer.
6 times.

Furthermore, when looking at the destinations for one-day tourism and recreation, divided into those within and outside the prefecture in which the respondents reside, we find that ``winter'', ``winter'',
Over 60% of respondents lived in their prefectures for both summer and summer months.

(Calculation of location registration traffic and memory capacity for each exchange) a) Type 5 exchange When Japanese citizens wish to use their mobile phones even when traveling abroad, they must register their location in the exchange memory.

The amount of traffic is 0,603 trips per year per person, and from the average number of days (8.6 days), 1 per person per year.
The number of times that location registration and deletion are performed on the 5th type exchange in a year is 0.03 times x 2 days = 0.06 times/person-year If the traffic is uniform, it will be 80% (1.2 billion people) of the entire nation (120 million people). Even if 100,000,000 people owned mobile phones, the memory capacity required for a Type 5 switch would be enough for about 500,000 people.

In addition to the memory capacity of the 5th type exchange, location registration is required when moving between 4th type roam areas. This applies, for example, when a user residing in Tokyo travels to Hokkaido, and these statistics can be obtained from Table 2 using the following formula. First, the number of times location registration is performed is as follows: One mobile phone owner registers in memory 1.72 times a year due to travel outside the area.

In addition, the number of trips per year is 0.66, and it is thought that there are few trips outside the region that cover multiple regions, so the number of trips per year is 0.66.
Memory will be used for 6 x 4.92 x O, 509 = 1.65 days.

From the above, the amount of location registration traffic and memory capacity required for the Type 5 exchange due to foreign and out-of-area travel per year per portable phone is as follows.

Traffic amount (0.03+0.86) X 2 =1.
78 (times) Memory capacity M O, 17X1.65=1.
82 (Sun) There is a position registration in an intermediate block, but it is considered to be a decimal number, so it is omitted in the above calculation.

b) Type 4 Exchange It is necessary to add intra-block flows, such as those within the Tokyo block or Tohoku block, as shown in Table 2, and flows due to day trips outside the prefecture.

The number of times the location is registered is 1.683 times per portable phone per year.

In addition to these, the type 4 exchange operates in the same way each time it is registered to the type 5 exchange, so if we add this, the traffic it is 1.65 + 3.18 + 1.78 = 6
．． 61 (times) Similarly, memory capacity 3.19 + 1.82 = 5.01 (days)
That is, the memory is accessed 6.61 times a year and the memory is used for 5.01 days.

C) It is difficult to accurately estimate the amount of location registration traffic and memory amount related to the third type exchange to the first type exchange, such as a third type exchange, because they are greatly influenced by the usage habits of mobile phone users.

However, in terms of memory capacity, it is necessary to design a type 3 exchange for approximately 20 to 30 days a year, a type 2 exchange for approximately 50 to 100 days, and a type 1 exchange for 365 days a year. The basis for the above calculation is based on the above-mentioned document (
National Travel Dynamics Survey Report, compiled by the Prime Minister's Office, October 1981)
This is the measurement result in 1982, as stated in
Some adjustments may be necessary in the future due to changes in people's lifestyles. However, we believe that there will be no major changes that fundamentally overturn the basis of the present invention.

As above, we have roughly calculated the traffic and required memory amount using the subscriber information memory unit of the present invention. We will roughly estimate the amount of traffic and memory that will be required if we adopt the method of installing a personal information storage unit).

■ Traffic As explained in points i) to iii), all location registration9 billing information, etc. associated with the movement of a mobile phone must be transmitted to a storage unit located at one location nationwide, which is a huge problem. reach a certain amount. In particular, billing information is transmitted immediately after a user ends a call (otherwise, memory would be required and the effect of centralized placement would not be achieved), so when the original document is busy with call traffic, This will require an increase in line capacity by this amount. On the other hand, in the mobile phone system that is the premise of the present invention, there is no need to send billing information immediately after a call, and it is sufficient to send the billing information to KTC-I in one day, one week, or one month at a time, and there is less call traffic at night. There are many benefits, such as being able to choose the time zone.

■Amount of memory Considering the Japanese association, if we compare the method of installing the distributed subscriber information storage unit used in the present invention with the method of centrally installing it in one place nationwide as in the conventional technology, the amount of memory will be smaller in the case of centralized installation. It is clear that the number will decrease overall. A quantitative consideration will be given below.

In order to achieve the same level of serviceability as the present invention even if the storage unit is installed in one central location nationwide, it is necessary to install the subscriber information storage unit at the telephone office corresponding to the first type exchange (
For example, for storing billing information), the question is what is the difference between the amount of memory required for the second to fifth type exchanges used in the present invention and the amount of memory in the case of centralized arrangement. Then the fifth
Since the memory capacity of the second to fourth type exchanges is extremely small, the second to fourth
This is a comparison of the amount of memory in a Type 3 exchange and the amount of memory in a centralized arrangement, so it is a distributed gate.

The total memory capacity of Type 2 and Type 3 exchanges in Japan is assumed to be M2 + M3, respectively. Although the actual values of M, .

However, the price of hardware used in storage devices has been decreasing in recent years, and the disadvantages of this method are not so great, but rather the superiority in terms of traffic volume is enormous.

3, 5.3 (About P ID (Personal Identification Information@))
Next, a method of assigning PID (Personal Identification Information) according to the present invention will be explained.

The information included in the PID is given to enable the following identification.

■ A specific individual can be identified from another individual (that is, it is impossible to have the same PID even within the same family). ■ Type 1 roam area, Type 2 roam area.

−・−・−・It is possible to identify the type 5 roam area (
In fact, this is the most important feature of the PID assignment method of the present invention.

) ■ The accuracy must be such that the location of the home area of the individual (mobile phone) who owns it, that is, the address (residence) of the individual (however, clear accuracy here means that the user cannot see the PID). For example, the subscriber information storage section of a type 1 exchange does not mean that it can be immediately identified.
If you have accumulated a comparison table of place names and PIDs for seed loam areas, and want to obtain the address information of the person from the PID,
(This means that the service is easily available), and if you want to register multiple home areas, prioritize them; , Centralized stations, terminal stations, and even wards, towns (street addresses), etc. can be identified. ■ For reasons of ■, prefectures, cities (wards), and wards.

It must be possible to identify even the town (street address), ■ It must be possible to identify by country in anticipation of the future, ■ It must be possible to identify by service class, ■ It must be possible to prevent theft and use by a third party without the owner's consent. ■ The service class should be able to identify, for example, the following classes: i) Limit the area where calls can be made or received; ii) Set the time and date of calls made or received. iii) Limiting the available time in a day for making or receiving calls; iv) Availability of additional services such as conference calls ■) Whether or not there is a landline phone compatible with mobile phones in the home area vi) (vi) Possibility of superimposition with other mobile communication systems; viii) Possibility of non-telephone (non-voice) services; (i) PID assignment method with specific rules. The number of digits of PrD will be explained as a first step in explaining the PID configuration applied to the present invention, which allows all PIDs to be called at once.

In the case of Japan, the population is approximately 120 million, so it is necessary to identify this number. In other words, if we adopt a national uniform number system, xx -xxx-xxx
It can be seen that x (x=0.1, 2...9) and 9 digits are sufficient. However, since it is necessary to satisfy the conditions (1) to (2) described above for PID identification, nine digits is insufficient. Therefore, the following numbers of digits are assigned to the following various roam areas.

Type 5 roaming area, 3 digits for each country ××× (country ID) Type 4 roaming area, 2 digits for each prefecture XXX (prefecture ID) Type 3 roaming area, i.e. city, ward (in the case of Tokyo) county 3 digits XXX (city ID) 3 digits XXX (town ID) in Type 2 loam area, i.e. ward, town, or equivalent place name (cities with a population of 50,000 or less are included) ) Type 1 ROHM area, i.e., street address, housing complex, apartment name, 4 digits XXXXX (Subscriber ID) In other words, a total of 13 digits are required, but in addition to this, 7 digits are required for service class, VIP @, and PIN number, etc. The number of digits required is 20 in total, and the number of bits is 4 bits x 20 = 80 bits. However, country-specific identification will not be necessary for the time being. Also, in principle, the caller does not need to dial the service class, VIP identification, password, etc. at the time of making a call. The PID assignment method explained above is illustrated in FIG. 6.

In reality, it is necessary to provide users with a PID with as few digits as possible in order to improve serviceability, so the number of digits at the time of introduction will be reduced to about the same as NTT's national long distance dial. However, for detailed explanation of the present invention, the sixth
Use diagrams as the basis.

Now, the PID assignment method shown in FIG. 6 has a great influence on the implementation of the present invention. This point will be explained.

According to the above-mentioned mobile phone system, a mobile phone owner can make a call from anywhere in the country, and can also receive a call from anywhere in the country. When a call arrives, the PI of the present invention
The D-applying method will be effective. That is, assume that Mr. A, whose home area is Hoya City, Tokyo, is currently traveling around the country carrying a mobile phone. On the other hand, Mr. A's friend 8 lives in Kumamoto, a dairy factory, and wants to make a call to Mr. A from a general electric packing machine. The flow of incoming call signals when Mr. A is in the 1st to 5th type roam areas will be explained below.

■ In the case of a Type 1 Roam area, Mr. 8 dials Mr. A's PID signal (PIN and service class are omitted in Figure 6). In this case, Mr. A's PID
It is necessary to dial all of the prefecture ID, city ID, town ID, and subscriber ID. If Mr. 8's telephone is managed under the same class n exchange as Mr.
〃 Town ID 10 Subscriber ID dial n-3 〃 City ID
+Subscriber TD dial n-4 Prefecture ID 10 cities I
It is sufficient to dial the D Tomachi ID + subscriber ID. Further, even if n=1 and the town ID or city ID is dialed, the exchange makes the determination, so the desired call receiving operation can be performed without causing an erroneous connection or connection failure. Now, 8
The first class exchange that manages Mr. 8's phone decodes the PID and recognizes that it is a mobile phone managed by KTC-1 in Hoya City, Tokyo, and transfers the call signal to Mr. 8's phone. The information is sequentially sent to the higher-level exchanges, and finally reaches the subscriber information storage section of the fifth type exchange.

At this point, the subscriber information storage unit is searched, but since Mr. A's location has not been registered in the 5th type roaming area, the hierarchy has been lowered to the 4th type exchange that manages Mr. A's mobile phone.
The incoming call signal is transferred to KTC-IV-1). The subscriber information storage section of the 4th type exchange is also searched, but Mr. A's 4th type roam area location is not registered here, so the incoming call signal is sent to the 3rd type exchange (KT-II[-1). Transfer.

In this way, the subscriber information storage unit is searched.

It turns out that Mr. A's roaming area location is not registered up to the first type exchange (KTC-1-1), so in the end, it is the same as when receiving a normal telephone call.
The incoming call signal is transferred to 1), and as a result of checking the MEM, it is found that the user is not in the home area and is in the roam area 5 ID 2.
It turns out that the location is registered in stDg, and an incoming call signal for Mr. A addressed to stDg is transmitted. The 5IDE searches the PrD storage unit and recognizes that Mr. A's location is registered as the own mobile phone master device 5ID2, so it sends out the PID and destination call signal. Here, if Mr. A hangs off, a conversation with Mr. 8 will be started.

(2) Type 2 Roam Area In this case, the operation from Mr. 8's dial signal transmission to the 2nd type exchange (KTC-n-1) that manages Mr. A's mobile phone is the same as (2).

Now, when the incoming call signal addressed to Mr. A is transmitted to KTC-n-1, the second type exchange searches the MEM section and finds that Mr. A's location has been registered and is managing the home area. K
It turns out that he is not in TC-I-1 but in KTC-I-2. As a result, KTC-If-1 transmits the incoming call signal to KTC-If-1.
Send to C-I-2. KTC-1-2 searches the MEM and sends the PID to the SI Di managed by its own exchange.
When + recognizes that it is being registered, it sends the incoming call signal to 5ID.
Send to s. The following operations are the same as ■.

■ Third-class roam area In this case, the operation from Mr. 8's dial signal transmission to the third-class exchange (KTC-■-1) that manages Mr. A's mobile phone is the same as in ■.

Now, when the incoming call signal addressed to Mr. A is transmitted to KTC-II[-1, the third type exchange searches the MEM section and finds that Mr.
When it becomes clear that his location is registered and that he is in KTC-n=2 instead of KTC-n=1, which manages his home area, KTC-m-1 transmits the incoming call signal to KTC-1).
Send to -2. KTC-ff-2 searches for MEM and searches for the subordinate exchange KTC-1- which is managed by the own exchange.
When it recognizes that the PID is being registered in KTC-I-2, it sends an incoming call signal to KTC-I-2.

Upon receiving this, KTC-1-2 searches for MEM and
When I realized that Mr. A's location was registered in the ID,
Sends an incoming call signal to Sl1mh.

The following operations are the same as ■.

■ Type 4 Roam Area In this case, the operation from Mr. 8's dial signal transmission to the Type 4 exchange (KTC-IV-1) that manages Mr. A's mobile phone is the same as in ■.

Now, when the incoming call signal addressed to Mr. A is transmitted to KTC-IV-1, the type 4 exchange searches the MEM section and finds that Mr. A's location has been registered and is managing his home area. When it becomes clear that the user is at KTc-m-m instead of KTC-m-1, KTC-IV-1 transmits the incoming call signal to KTc-m-
Send to 2. KTC-II [-2 searches the MEM and searches for the subordinate exchange KTC-n- managed by the local exchange.
When it recognizes that PIDl is being registered in KTC-IF-3, it sends an incoming call signal to KTC-IF-3. The following operation is the same as performing the same operation as ① from the next higher level exchange.

■ Class 5 Roam Area In this case, the operations from Mr. 8's dial signal transmission to the Class 5 exchange (KTC-■) that manages Mr. A's mobile phone are the same as in ■.

Now, when the incoming call signal addressed to Mr. A is transmitted to KTC-V, the 5th type exchange searches the MEM section and finds that Mr. A's location has been registered and that the KTC-V, which is managing the home area,
If it is determined that the caller is at KTC-IV-2 rather than -IV-1, KTC-V sends an incoming call signal to KTC-IV-2. When KTC-rV-2 searches the MEM and recognizes that PID+ is being registered in the subordinate exchange KTC-1)1-3 that is managed by the local exchange, it transmits the incoming call signal to KTC-■-3. Send to. The following operation is the same as performing the same operation as ① from the next higher level exchange.

Other benefits when implementing the PID assignment method for mobile phone systems used in the present invention will be explained.

■ Implementation of group calls When administrative authorities wish to send administrative information to people within the same prefecture, same city, or on the same route, as shown in Figure 6, IDs containing the necessary people ( For example, after the town ID)
- All you have to do is perform a simultaneous call. Alternatively, it is possible to further subdivide and call only PfDs assigned according to specific rules.

■ As explained for each route guidance service, PID corresponds to place name.
Just by knowing the ID, it is possible to determine the approximate place name.

■ Substituting the postal code for prefecture ID, city ID, etc. Since the PID in the mobile phone system used in the present invention is classified and given as prefecture ID, city ID, town ID, and subscriber ID, Even if the caller knows only the postal code of the address, town ID, and subscriber ID as the mobile phone number of the other party, the call can be made. In this case, the first-class exchange that received the call uses its own postal code and area ID comparison table, and if it does not remember whether it is 602, town ID (for example, 123), subscriber number (for example, 1234) or L, it uses its own postal code and area ID comparison table. From your mobile phone, for example #0-602-123-
You can talk to the other party by dialing 1234. In this case, the first-class exchange that received the call uses its own postal code and area ID comparison table to determine that 602 is Kamigyo Ward, Kyoto City, Kyoto Prefecture, and the city I
This is because it is converted to D (for example, 45).

Furthermore, in the mobile telephone system used in the present invention, it is not necessarily necessary to remember the telephone number of the other party. That is,
If you know the other party's address and name (this doesn't necessarily have to be accurate either), KTC-1's directory assistance AT (artificial intelligence) will give you a more accurate number as a result of inference.

For example, "Kyotoshi Kamigyoku Shimotachiuri Oomya Agartana Chikaracho 202 Bunchinose Hajime"
If you dial by voice, "Sonokataha XXX-XX-"
XXX-XXXX death.

If you want to talk, you can dial #1, for example, and if you don't, dial *2 to achieve your desired purpose.

This is because estimation is easily performed using the result AI, which is separated from the prefecture ID, city ID, town ID, and subscriber ID.

3, 5.4 (Reason and examples of how it is possible to make calls in all areas even with weak mobile phone transmission power in urban areas) According to the long-term outlook (published by the Radio Promotion Association, Radio Technology Council, July 1980), it is predicted that the importance of mobile communications will increase in the future, and the demand for quantitative expansion and qualitative improvement will increase. However, since mobile communication services are impossible without the use of radio waves, we will continue to strive to secure the necessary radio waves to meet mobile communication demand (it is written that it is necessary).

It is necessary to take measures to increase the capacity for mobile communication subscribers, such as the development of technology for the effective use of 5 radio waves and the development of new frequencies for mobile communication.

0 Mobile objects that essentially move around (people 1 trains, ships, aircraft, etc.)
Communication with ■ To improve convenience, communication may be performed using radio waves and making the wired portion cordless.

Estimating the demand around the year 2000 for major services that are expected to have many needs in the future and require a relatively wide frequency band, the demand will be as follows.

■ Car phones 4.5 million (10% of vehicles) metropolitan area 1) 50,000 (25% of the nation) ■ Mobile phones 1.2 million (1% of population) metropolitan area 3
00,000 (25% of the nation) ■ Train phone 0.1 million ■ Ship phone 50,000 (vessels over 5 tons) ■
Maritime satellite communications 100,000 ■ Aircraft telephones 1,000 ■ Cordless telephones 7 million (10% of telephones) Metropolitan area 1.75 million (25% of the nation) ■ Pagers 6 million (5% of the population) Metropolitan area 1
500,000 (25% of the nation) Police, disaster prevention, fire department, etc. 600,000 Disaster prevention mutual heat vA 600,000 Various commercial uses 4.8 million (4% of the population) Metropolitan area 12
00,000 (25% of the country) Personal wireless 6 million (5% of the population) Metropolitan area 15
00,000 (25% of the nation) Fishing fever! 1! 400,000 As mentioned above, great development is expected in Japan's mobile communications, especially land mobile radio telephones.

The present invention relates to a mobile phone among the mobile communications described above, and this invention means a system that includes all of the above-mentioned items (1) to (2). FIG. 5(b) and fcl show the national mobile phone network configuration used in the present invention.

3.5.5 C Configuration of a mobile phone system within the 23 wards of Tokyo as an application example of the present invention] A case in which the present invention is applied to an urban area will be described in detail. Figure 5 (bl shows the system configuration of a mobile phone system in which the present invention was implemented in Tokyo's 23 wards.The sequence begins in 2000 A.D., when the present invention was introduced in earnest.
Explaining the structure and operation of the present invention in 1987),
After that, the structure and operation at the time of partial introduction of the present invention up to the year 2000 will be explained.

The former represents the state after the establishment of the ultimate mobile phone system according to the present invention, while the latter, on the contrary, will be gradually introduced in a state of coexistence with various mobile communication systems currently in use, such as cordless phones, car phones, and pagers. Therefore, in order to achieve the purpose of the present invention, it is necessary to share these other methods. Therefore, the configuration of the present invention is slightly different from that of the former ultimate form, and the hardware and software that make up the system are also slightly different. However, the effects of the present invention can be fully developed even at the above-mentioned stage of partial introduction.

3, 5.6 (Configuration of the mobile phone system used in the present invention when the nationwide network is completed) Assuming that construction of the mobile phone system used in the present invention will begin in the future and will be almost completed around the year 2000, the configuration of the system will be as follows. It becomes as shown in FIG. 5 (al) and FIG. 5(b).

That is, in FIG. 5(a), the first type exchange KTC-1
-1 is an exchange in which mobile phone 1 (PID+) is accommodated. KTC-I-1 has many other mobile phones (
2, 3), a mobile phone master device (1, 2.3), and a landline telephone (1, 2, 3), as well as a large number of general telephones (not shown in the figure). (The circles 1 to 3 indicate the communication area from one parent device.) Also, the mobile phone parent device 4 in the figure has the same electrical characteristics as the parent device in the house 1.2.3. , installed on an outdoor utility pole or on a pole for lighting in parks,
It is connected to C-1-1 by a transmission line. 4 is used when a mobile phone owner uses it on the road or in an open space such as a park, and is installed in various places, so the mobile phone owner can make and receive calls from any location. 5 at the bottom right of Fig. 5(a) represents a large-scale building, and the circle indicated by a broken line represents a service area that can be communicated from one mobile phone master device, and many are installed in the building. This makes it possible to make and receive calls using a mobile phone from any location. These mobile phones and related devices are KTC-1-1 or KT.
It is housed in C-1-2. MEM of KTC-I-1 or KTC-1-2 indicates a subscriber information storage unit. KTC-1-1 and KTC-1-2 or other type 1 exchanges (local telephone offices) not shown are connected to the upper type 2 exchanges (KTC~n-1) as shown in the figure. ing. In addition, the 2nd type exchange is connected to the higher level 3rd type exchange (KTC-III-1), the 3rd type exchange is connected to the higher level 4th type exchange (KTC-IV-1), and the 4th type exchange is connected to the higher level 4th type exchange (KTC-IV-1). It is connected to the top class 5th type exchange (KTC-V) as shown in the diagram, and is also configured to allow the use of satellites exclusively for mobile phone calls, creating a mobile phone network that covers every corner of Japan. has been done. Also,
The MEM attached to each level exchange represents a subscriber information storage unit.

For example, in order to make and receive calls from any area within the 23 wards of Tokyo, the mobile phone according to the present invention can be used as a mobile phone master device.
Approximately 10,000 pieces are required, which is a fully achievable value as will be explained in detail later. Therefore, it can be said that by around the year 2000, mobile phone owners will be able to make calls anytime, from anywhere, and to anywhere in urban areas throughout Japan. In rural and mountainous areas, the situation is almost the same in areas with human habitation.

The above situation assumes that the mobile phone owner is inside a building or walking on the road. In the following, the call making/receiving operations while on board a car, ship, train, or airplane will be explained. In addition, we will explain the network configuration and method used when the mobile phone owner is in a place with poor radio wave propagation characteristics, such as an underground passage or an underground parking lot.

This case will be explained using FIG. 5(b). In the figure, the meanings of symbols such as KTC-1 and MEM are shown in Figure 5 (a).
Since it is the same as that shown in FIG.

First, assume that a mobile phone owner gets into a car with the mobile phone still in operation (power on).

In this case, mobile phone owners will still need to make and receive calls in car phone mode, which will be described later, even in the year 2000, but if they accidentally or intentionally do not switch to car phone mode, the following is the operation. Explain. In this case, the downlink control channel emitted from the nearest mobile phone main unit on the utility pole on the roadside can be sufficiently operated by the mobile phone even inside the car. However, once the car starts driving, the relative distance between the mobile phone on the roadside and the mobile phone rapidly increases, and eventually reception becomes impossible. However, at this time, another mobile phone parent device is near the car, and the downlink control CH from this parent device should exhibit a received input electric field value sufficient to be captured by the mobile phone. Therefore, although an attempt is made to store the SID included in the downlink control CH from the cutting-edge device and the CH number that is available as a call CH in the roam area call information storage section of the mobile phone, Because the speed is fast, before the above process is completed, the car moves to a location near another mobile phone master device, and the downlink control channel is already activated.
Due to the drop in electric field, communication with the mobile phone master device that was capturing the information becomes impossible. Specifically, if the speed of a car is 36 km/h, the speed is 10 m/s, and on the other hand, assuming that mobile phone master devices are installed every 25 meters on the road side, a new mobile phone master device will be installed every 2.5 seconds. This means that the mobile phone must capture the emitted downlink control CH. (Difficulties increase as the vehicle speed increases.) In such a situation, even if a call is successfully set up between a certain parent device and the mobile phone, two seconds after the call has started.
．． The communication channel must be switched every 5 seconds, which increases the amount of ineffective system operation, and also increases various types of noise from the viewpoint of the communication quality of the communication channel, which is not desirable. Therefore, in the mobile phone of the present invention, the operation of the noise level detector shown in FIG.
The control unit is informed that electric field fluctuations (noise level fluctuations) exceeding a fixed period have occurred, and upon receiving this notification, the control unit does not receive the radio waves emitted from the mobile phone master device, and the control unit does not receive the radio waves emitted from the mobile phone master device.
The oscillation frequency of the reception frequency synthesizer is controlled so as to capture the downlink control CH emitted from the mobile phone wide area call type 4 radio base station (K RC-mV) shown in b). In addition, KTC-r requires the mobile phone master device to call its own mobile phone in wideband calling mode (Type 4).
request to be informed. Upon receiving this, KTC-I determines that the mobile phone is in a car, and the KTC-I
The mobile telephone exchange MTC (which manages the same area as 1)
5('b)), the PID of the mobile phone is transmitted from KRC-TV using the downlink control channel.

request to call. In reality, this request signal is KT
C-1→KTC-I[→KTC-m→KTC-IV-M
It is transmitted via the TC and the exchanges at each level.

KRC-IV has enough transmission power to cover a 3-5 km radius circle like NTT's pager service, so the mobile phone can use KRC-IV without sudden changes in the input electric field. The downlink control CH can be received satisfactorily.

If there is an incoming call in this state, the PID of the mobile phone is called from the KRC-mV, so that the call bell shown in FIG. 4(a) can be made to ring. A mobile phone user who hears this ringing can respond by using some functions of the car phone, as will be described later.

The above explanation uses an example of a regular passenger car that can accommodate a small number of people, but in a car that has a large number of passengers, such as a shared bus or a sightseeing bus, many users may each carry a mobile phone. Therefore, even if the mobile phone cannot be used in the car phone mode, it is possible to receive a call using the same operation in the calling mode as described above.

Similarly, when you board a ship, aircraft, train, etc. and there are many people on board, your mobile phone will be in ship phone mode, and at this time too, your mobile phone will be able to make wide-area calls using the Class 4 wireless base station KRC-IV. It becomes possible to receive calls using radio waves.

It goes without saying that calls from these mobile units can be made using a superimposition technique as described later.

Furthermore, when the mobile phone owner is in a situation where it is difficult to receive radio waves from the mobile phone's parent device, such as in an underground parking lot, the mobile phone will use the signal from the noise level detector shown in Figure 4(a) to make a mobile phone wide area call. Since radio waves emitted from the base station can be received, calls can be received in the same way as described above. This case will also be explained in detail later.

Next, a PB that is installed on the same premises of a company or in a large building and that can operate in the same way as a type 1 exchange.
X or the wireless system control device will be explained.

The mobile phone system configured according to the present invention allows calls to be made and received from any party at any location, and it is also possible to continue talking while walking; this mechanism will also be explained. FIG. 5(d) shows an example of a configuration in which the mobile telephone system of the present invention is applied within a premises. In the figure, mobile phone 1 (PID, ) is located near the mobile phone master devices IA, IB, and IC, which are distributed throughout the campus. Even if you move from place to place while walking along the path, you can continue talking. explain things.

In the figure, a radio system control device RC is installed, and is connected to each mobile phone master device through a transmission path.

Further, as shown in the figure, the RC is connected to a PBX (exchange) corresponding to each call path, and the PBX also accommodates an ordinary fixed telephone. Furthermore, it is assumed that the PBX and the first type exchange are connected through a subscriber line.

Now, assume that the mobile phone makes a call to a general telephone (TO) under the first type exchange shown in FIG. 5(d).

The operations related to making a call will be omitted as they will be explained separately, and it will be assumed that the call is in progress. And mobile phone master device IA
Suppose that a person approaches IB from near , as shown in the same figure, while walking. In this state, the distance between IA and PIDI becomes large, and if it exceeds 25 m, the quality of the call will deteriorate. This state is the S
/N is monitored by the monitoring unit, and due to quality deterioration, the S/N
When the signal-to-noise ratio (signal-to-noise ratio) falls below a certain value, a request is made to the call control unit to switch the call path from IA-PID to IB-PID. FIG. 5(e) shows the configuration of the wireless system control device, and the above request is in the call control state (C
Check the status of PID and SID during a call using PID and SID.
After searching and investigating the ID storage unit and checking the call status,
After confirming that mobile phone 1B is not talking to another mobile phone, the other party of mobile phone 1 is switched from IA to IB.

This means that the CPU turns off the switch SW of the communication path switching section (in the figure, the black triangle means that IA and T1 are connected), and turns on SW2 (in the figure, the 0 triangle is changed to a black triangle). This can be achieved by doing.

When the above operations are completed, the user of the mobile phone 1 can continue to talk to T while walking.

Similarly to the above, when PID gets closer to IC from IB, PID + IB becomes PID, -I by switching the communication path.
It becomes possible to change to C and continue the call.

The above explanation is based on the case where the RC is equipped with a call path switching function, and this is a system configuration suitable for large-scale companies with premises dispersed in various places, but or PB in a relatively small campus.
It is more economical to incorporate it inside X.

-a Mobile phones used in homes are not accommodated in such a PBX or RC, so they are directly accommodated in a type 1 exchange. In this case, the function of the wireless system control device explained above is incorporated into the Type 1 exchange, and the mobile phone user can freely continue talking while walking using the same call path switching function as described above. It is possible.

Further, as a configuration of the mobile telephone system used in the present invention, another embodiment will be described as a connection interface with an existing national telephone network, for example, the NTT telephone network. FIG. 5 (fl is this embodiment. As shown in the figure, the mobile phone network and the NTT telephone network used in the present invention have an interface at a higher exchange level, but KTC-n and below are completely side-by-side. It is characterized by the fact that it is a net.This is similar to the fifth point already explained.
Technically speaking, in Figure (C), independence is enhanced compared to the sharing of exchanges at each layer in the nodes of the NTT telephone network. In this case, it goes without saying that KTC-I can accommodate general telephones and pagers in addition to mobile phones, and furthermore, KTC-m or KTC-IV can accommodate car telephone systems. The system configuration example shown in FIG. 5 (fl) is a configuration used when a company other than NTT operates a mobile phone network.

In addition, in Figure 5 if), the predicate line with the NTT national telephone network is 3.
Although the same transmission lines are listed, there is no technical problem even if any one or two of them are used.

In addition, the above system configuration (Fig. 5 (a), (b), (
In c) and (f)), the hierarchy of the exchange was explained as 5, but this is not necessarily because 5 is optimal. This is because when considering Japan's current nationwide mobile phone network, population, land area, shape, etc. are comprehensively considered. however,
Even with this assumption, the optimal number of layers will change in the future due to changes in population mobility, changes in the environment of national social life, or changes in the economic efficiency of the hardware and software that make up this system.

The number of floors when the present invention is applied in a foreign country varies greatly depending on the population and national character, as mentioned above.

3, 5.7 (Configuration of the mobile phone system according to the present invention at the time of introduction) Figure 5 (C) shows the system configuration of the mobile phone system in which the present invention was implemented within the 23 wards of Tokyo. This is the time when the system is introduced, not when the nationwide network has been completed.

In the figure, each home or office is equipped with a cordless telephone master device (fixed wireless device) that has almost the same functions as NTT's current cordless telephones, and can be accessed by any mobile phone. In addition, each utility pole on the road side is installed with a wireless transmitting/receiving device having almost the same functions as a cordless telephone main device. These devices, like current cordless telephones, are housed in exchanges at telephone offices or in PBXs at offices, and are treated in the same way as regular landline telephones. However, in this text, the above-mentioned exchange or PBX is referred to as a type 1 exchange, and this exchange also has a memory device (for storing, changing, and erasing the current location information of the mobile phone).
A subscriber information storage unit) is located there.

Hereinafter, it will be explained that the mobile phone of the present invention can make and receive calls in almost all the 23 wards of Tokyo using only the parent device of these cordless phones.

Recently, the Ministry of Posts and Telecommunications announced that the demand for cordless telephones in Japan in the 2000s was 10 million.

This is reasonable in light of the numbers from ■ to ■ in the aforementioned document ``Long-term Prospects for Radio Wave Utilization''. Based on this figure, the demand within Tokyo's 23 wards is estimated to be 1/10 of 1 million. On the other hand, the total area of the 23 wards is 581 -, so one square kilometer is 25m on a side, so a square is 1000m x 1000m 25 x 25
There is one cordless telephone within rrr, that is, a square of 25 meters on each side. However, in the above calculation, it was assumed that the traffic was uniform, but this is considered to be a reasonable assumption since the number of demands is extremely large.

As a result of the above calculation, assuming that the traffic is uniform, one cordless telephone main unit will be installed within a 25 m square. On the other hand, since the service area of cordless telephones is considered to be within a radius of 25 to 50 meters from the parent device,
In the 2000s, it was discovered that it was possible to make and receive calls in all 23 wards of Tokyo if a mobile phone could access the master device of any cordless phone.

However, there are places within the 23 wards where the radio waves of the cordless telephone main unit installed indoors cannot reach because there are wide roads, playgrounds, underground malls, etc. In these areas, there are places where the radio waves of the cordless phone main unit installed indoors do not reach, and in these areas there are places such as telephone poles, roadsides, building walls, etc. that have the same function as the main unit. A transmitting/receiving device is installed that faces a mobile phone with a
Or it must be accommodated in the telephone exchange. In addition,
In recent years, many high-rise apartment buildings have been constructed, and consideration must be given to these as well from the viewpoint of radio wave propagation characteristics.

Furthermore, if a large number of people use mobile phones, there is a risk that calls may become impossible due to traffic, but this will be discussed in detail separately.

In addition, in order to be able to make and receive calls while boarding a means of transportation that moves at high speed, such as a car, it is necessary to have mutual access to mobile communications such as a car phone. However, these will be detailed later.

(Study of traffic of mobile phone used in cordless phone mode) As already explained, when the mobile phone system used in the present invention is used within Tokyo's 23 wards, if it is used in cordless phone mode, it will spread throughout the wards of Tokyo. It has become clear that it is possible to make calls, but since many subscribers will be using it at the same time, there is a question of whether it can be used satisfactorily in terms of traffic.

In conclusion, the result is that it is technically possible, as described below.

Cordless telephones currently in NTT service have 46 channels on the same portable device, and use a multi-channel access technology that searches for and uses an empty channel when a certain channel is in use.

Naturally, the mobile phone according to the present invention also applies multi-channel technology, and the number of mobile phone users (subscribers) that can be accommodated is determined below, assuming that the number of usable channels is the same as that of a cordless telephone.

The following specifications are used as the mobile phone usage conditions.

i) The number of repetition zones is 12. This is because in order to avoid radio wave interference, channels currently in use are not used in adjacent zones and are used separately.

ii) The traffic is set to 0.037-ran (daily usage frequency is 6 times a day, 3 minutes/time, original call concentration rate 10/1), which is 3 times the traffic of the current car phone under the design conditions. be.

iii) Call loss rate B-0.03 This is the same design condition as the current car telephone system.

iv) The area of Tokyo's 23 wards is 581, and there are 100
Assume that 10,000 parent devices are installed. This value would be a reasonable value assuming a system that includes all of the above-mentioned material ``Long-term Prospects for Radio Wave Utilization''.

Based on the above assumptions, the traffic that can be handled by this mobile phone system can be calculated using the following equation. That is, a (46,0
, 03) represents Erlang's loss formula. In other words, it was shown that 1,270 subscribers could be used in a 25 m square area under the above usage conditions.

Here, since the number of repeated zones is 12, the number of subscribers accommodated per zone is 106 people in a 25 m square area under the above conditions of use.

Therefore, within the range of 1-, there are 169,600 (people/employment) x 581 (W) = 985 for the entire Tokyo ward.
It can be seen that 4,000 people (in 23 wards), or approximately 9.8 million people, can use the service. By the way, the current population of the 23 wards is approximately 8.6 million people, so this value exceeds the total population, indicating that the city has sufficient carrying capacity. However, in places where many people gather, such as downtown areas, event venues, and baseball stadiums, there is a large amount of traffic from mobile phones, so it is necessary to install a large number of mobile phone master devices in the same place to handle this traffic. .

Technically, this is completely possible, and in this case, the configuration of the parent device would be to centrally install a large number of parent device radios in the same rack, such as in a car telephone base station. As described above, since the amount of traffic will increase in the future and it will be used frequently for business purposes, it is foreseen that the current number of allocated channels, 46, will not be sufficient. In fact, in 5 to 10 years, we will need 2 to 4 times as many channels, up to 200 channels.

However, even in this case, it is within the range that is sufficiently possible under the current frequency allocation circumstances, and the practicality of this patent is not restricted in any way.

Incidentally, compared to the 600 channels allocated to the current car telephone system, the number of required channels in the present invention remains extremely small at 1/3 of that number.

In addition, future advances in diversity technology will reduce the number of zone repetitions (7 zones, about half the 12 zones, will become possible) and narrow the frequency interval of carrier waves per channel (currently 12.5 KHz will be reduced to 10 KHz or less). There is a possibility that the frequency bandwidth used will not be much different from the current one.

3, 5.8 (Example of realizing a system that coexists with various existing mobile communication systems) The mobile phone referred to in the present invention is ultimately a system that carries the same mobile radio terminal and can make and receive calls from any location in the country. However, since it will take many years to complete, we will introduce it in parts in stages, and in areas where it has not yet been introduced, we will introduce it into various currently used mobile communication systems to achieve almost the same effect as the present invention. As an example, it is shown that it is possible to obtain the effect.In each of the following cases, as a mobile phone in the corresponding mode, i. ii) When using a mobile phone while walking on a road, etc., use a cordless phone or a mobile phone in pager mode. iii) When using a mobile phone while riding in a car, use a mobile phone in car phone mode. iv) If you are on a train, your mobile phone is in train phone mode. ■) If you are on a ship, your mobile phone is in ship phone mode. vi) If you are on a ship that uses maritime satellite communications. vi) A system that can be used as a mobile phone in aircraft telephone mode when aboard an aircraft.

FIG. 5(a) shows a national telephone network configuration according to the present invention.

This will be explained in detail below, but to summarize here, the system is configured such that the mobile phone (terminal) used in the method of the present invention can be used in each of the above-mentioned modes by being inserted into a commercially available terminal. It means that.

In other words, when you are in your office or home, you can coexist with these systems just like you would with a current cordless phone (the two systems can be used as if they were the same system, so in the following explanation, this will be referred to as overlapping). used).

Furthermore, when riding in a car (naturally, the mobile phone terminal of the present invention will be brought into the car), it is designed so that it can be connected under the interface conditions of the car phone terminal, and it is compatible with the car phone system and system. It will be used while overlapping.

The system configuration can be easily changed so that it can be superimposed on systems such as pagers, train telephones, and ship telephones, and the mobile telephone terminal of the present invention can be used in each system mode.

Hereinafter, it will be explained in detail that this is technically possible and economically possible without incurring an exorbitant system cost.

3.5.8-1 (Functions that should be added to the cordless telephone system necessary for use in cordless telephone mode) N.
There is a TT system, but as mentioned above, this type of system consists of a portable telephone and a parent device that is connected to the telephone via a wireless line and to the exchange via a wired line. There is. Furthermore, this phone and the parent device connected to it usually have a specific affiliation relationship, and the phone can communicate with other parent devices other than that specific parent device even if they are installed within a short distance where wireless communication is possible. A system in which communication is not possible even if a specific parent device has a specific combination of telephones with which it is located, and even if other telephones exist within a short distance where wireless communication is possible. Met.

However, in order to use the mobile phone used in the present invention in the cordless phone mode, the mobile phone needs to be equipped with means that can always connect to a parent device other than the specific mobile phone parent device connected to it via a wireless line. There is.

Even if the mobile phone is carried to any location within the premises while in a talking state, continuous communication can be ensured if there is a partner's master device that satisfies the call quality at that location. The system configuration diagram in this case is similar to that shown in FIG. 3(a), and the functions described below are added thereto, and the configuration of the mobile phone is shown in FIG. 4(a).

In order to use the mobile phone according to the present invention in the cordless phone mode, the following functions should be added to the current cordless phone main device.

i) Receives a location registration signal from any mobile phone, stores it in its own device, and transmits subscriber information of the mobile phone to a wireless system control device, PBX, or a first-class exchange such as a central office exchange.

ii) When the mobile phone receives an incoming call, the mobile phone transmits the PID signal of the mobile phone through a control channel to enable the incoming call.

iii) When making a call between a mobile phone in the roam area and a mobile phone master device, the PID of the calling mobile phone.

The call time and other information are transmitted to the subscriber information recording unit (charging unit) included in the first type exchange.

[Functions to be added to wireless system control equipment for cordless telephones or PBX (see Figure 5 (d)) or end office exchanges (hereinafter, exchanges with added functions are referred to as type 1 exchanges)] (i) Cordless telephones It stores subscriber information such as the PID signal of the mobile phone sent from the parent device.

(ii) If the PID of a mobile phone in the roaming area is accepted among the PID signals in item i), the PID
Investigate the contents of the signal. As a result, if it is determined that the mobile phone is in use in the Nth type roam area, the current location of the mobile phone is reported to the subscriber information storage section of the Nth type exchange. In fact, it is sufficient to send the signal to the subscriber information storage section of the second type exchange.

This is because the type 2 exchange also examines the contents of the PID signal and determines whether or not the signal should be sent to a higher level exchange.

fii) When the incoming call signal of the mobile phone system comes from a second type exchange or a mobile phone or general telephone set under the own exchange, the incoming call signal is sent to the parent device.

By adding the above-mentioned functions, a cordless telephone can be used as a mobile telephone system according to the present invention. FIG. 4 (bl is the parent device.

The internal configuration of a mobile phone and the wireless channel configuration between devices are shown. Further, FIG. 7 shows the flow of calls made and received between the devices.

The above explanation has been made on the assumption that by adding functions to a current cordless telephone, the functions of a terminal device, etc. in the cordless telephone mode of the mobile telephone system used in the present invention can be fulfilled. In fact, if the mobile telephone system used in the present invention becomes widespread, the prevalence of cordless telephones will rapidly decrease, and the mobile telephone system will become widespread in fields that were conventionally considered to be applicable areas of cordless telephones. However, the above-mentioned "Long-term Prospects for Radio Wave Utilization" does not foresee the emergence of a system that includes all of the current systems ■ to ■, such as the application method of the present invention. Since the mobile phone of the present invention is expected to be used while walking, at home, or at an event venue, we will explain how to use the mobile phone of the present invention while walking, at home, or at an event venue. This was done by assuming the state of the distribution and clarifying the differences in usage, hardware, software, etc.

Therefore, if the mobile telephone system used in the present invention becomes widespread, cordless telephones, which are not so popular, will become a system that can be handled by omitting some functions compared to the mobile telephone system.

[Functions that should be added to the car phone system for use in car phone mode]

In order to enable the mobile phone used in the present invention to be used inside a car, it is a prerequisite that a car phone currently in service is installed in the car.

In other words, in the distant future, it is impossible at the current technological level to make a mobile phone brought into a car available for use at all times without the assistance of a car phone system.

First, the NTT system configuration used in practical use as a car phone and the network configuration used in the present invention will be explained.

Figure 9 shows this. The right half of the figure shows the car phone system configuration, the left half shows the network configuration used in the present invention, and the broken line in the center shows the interface.

The following document was referred to for the car phone system configuration in the same figure (
"Car Telephone Radio Line Control" Research and Practical Application Report Vol. 26, No. 7, 1977, ) 3, 5.8-2 (Regarding the method of superimposing the mobile phone system with the car phone system) Now, below, the mobile phone used in the present invention A method of superimposing the system on the current car telephone system will be explained using FIG. 9.

In the figure, the left side of the broken line is the mobile telephone network used in the present invention, and the mobile telephone network is accessed from KTC-■ to the mobile telephone exchange MTC. That is, the fourth type exchange is connected to the mobile telephone exchange (MTC). In addition to the direct lines connecting the mobile phone exchanges, each exchange has transmission lines extending through telephone lines and control lines to the radio line control station and further to each base station. Each base station and car phone are connected wirelessly. The functions of each station making up these car telephone systems will be explained separately.

There are several types of superimposition methods.

The simplest method that does not put a burden on the car telephone system is to bring a mobile phone into the car, as shown in Figure 12(a), and dial the special number ( For example, ##0l-XXX-X
X-XXX-XXXX, except ##01 is mobile phone PI
D, ×=0°1.2. ...--9 is an arbitrary number. Actually, speed dialing is available and this location registration can be easily performed), and the location of the mobile phone is registered in the subscriber information memory section of the MTC. However, in this case, it is assumed that the MTC is required to add a function to accept location registration from a mobile phone.

Car phone (number YY-YYYYY, Y=0, 1.
2. The MTC subscriber information memory unit that receives the location registration from the mobile phone (an arbitrary number of -. Registration and reception will be memorized. Also, MT
In C, a notification is sent to the type 4 exchange that controls the MTC that the mobile phone is in a state where it is overlapped with the car phone system, and that the location registration has been completed in the own MTC subscriber information memory section. . Upon receiving this notification, the 4th class exchange decodes the PID of the mobile phone and transmits subscriber information such as current location registration information of the mobile phone to the 3rd to 1st class exchanges that manage the mobile phone. and memorize each.

The above processing on the landline telephone station side is completed and the mobile phone waits for the call to be made, but with this method, no calls are made from the mobile phone after this, and all these operations are performed by the car phone. I will do it.

Note that if the power is turned on, it will be easier to receive a call as described later.

However, since billing must be done not to the car phone subscriber but to the mobile phone subscriber, the following dialing operation is performed.

That is, first, when the handset of the car telephone is lifted, the following mobile station calling operations i) to iv) proceed.

i) When the mobile station makes a call, when you lift the handset, it sends a calling signal (your subscriber number and call display)■
. The wireless base station receives this and sends it to the wireless line control station ■. (Refer to FIG. 10) ii) The radio network control station indicates an empty communication channel in the radio zone using a transmission control channel.

iii) The radio network control station sends a calling party number signal to the mobile telephone exchange via the control line.

iv) Upon receiving this signal, the mobile telephone exchange reads the subscriber data from the home memory station to which the calling subscriber belongs, and analyzes the subscriber data.

Next, dial ##02 before the other party's number, and then dial the other party's number. Thereby, the process moves to operation (v) below.

■) As a result of the analysis, if the call can be made (■), the mobile telephone exchange requests the mobile station to send dialed digits via the radio network control station (■).

The mobile telephone exchange decodes ##02, determines that the call is from a mobile phone, and searches the location information memory section to see if the location of the mobile phone is registered. As a result, when it is confirmed that the mobile phone is superimposed on the car phone (number YY-YYYYY), the charging information memory section is made ready for charging when a call is started. Also, notify KTC-■ of calls made from the mobile phone■,
■.

vi) After receiving the dial signal, the exchange operates in the same way as a regular telephone: KTC-IV, KTC-m, KTC-If and K
The called party will be called via TC-I. however,
The number of calls is registered for the mobile phone, not the car phone. In addition, to bill the charges for the mobile phone, for example, once a month, the information is transferred to the first-class exchange billing unit that manages the home area of the mobile phone, and the charges are added up with the charges registered in other ROHM areas and charged to the mobile phone. This will be done to the phone owner■.

The above operation is illustrated in FIG. 1O.

52 years old student Next, incoming calls will be explained.

In this case, the mobile phone may already be connected to a mobile telephone exchange (MT).
It is assumed that location registration has been completed in the subscriber information memory section in C).

Now, let's assume that the owner of the mobile phone is contacted from a regular phone anywhere in the country. The call is made from a location (including a Type 4 exchange) where the mobile phone is not accommodated (managed) as a calling phone. In this case, by dialing the PID of the mobile phone, the first
~The type 3 exchange knows that the mobile phone is under another type 4 exchange, and transmits the called mobile phone PID to the type 4 exchange that manages the own exchange. The type 4 exchange that receives these signals transfers these signals via the type 5 exchange or directly to the type 4 exchange that manages the called mobile phone if there is a direct line. The fourth type exchange that receives this signal searches the subscriber information storage unit of the own exchange for the PID. As a result, the mobile phone discovers that it is superimposed on a car phone (number YY-YYYYY), and contacts the car telephone exchange that manages it to initiate a call operation.

This operation is similar to the above-described call receiving operation of the mobile phone mobile station, but in this case, the called party number is the car phone number (YY-YYYYY) instead of the mobile phone PID.

Then, the following operations i) to ix) are performed in sequence.

i) The mobile telephone exchange reads subscriber information from the home memory station to which the called subscriber belongs.

ii) If the subscriber is free based on this information, a paging signal is transmitted to all radio network control stations within the designated paging area via the control line.

iii) The radio network control station calls the called mobile device using the incoming call control line through all radio base stations under its control.

iv) The mobile device automatically transmits a response signal through the incoming call control line. The radio base station sends the received response signal to the radio network control station. The radio line control station sends an incoming call response signal to the mobile telephone exchange via the control line.

(2) Upon receiving this signal, the mobile telephone exchange sends a ringing tone to the called subscriber and a ringback tone to the calling party.

vi) The operation of the exchange after the car phone subscriber responds is almost the same as that of a regular telephone.

In the unlikely event that a car phone receives an incoming call (or an outgoing call) and the call cannot be received by the car phone, the MTC will recognize this and use the radio waves of the mobile phone's wide-area call type 4 wireless base station. It is also possible to directly call the mobile phone PID.

The above explanation is for the case where the calling phone is housed in a different type 4 exchange from the mobile phone, but calls can be made in the same way if the calling phone is housed in the same type 4 exchange. It is. That is, in this case, the calling signal from the calling telephone is transmitted to any of the first to fourth class exchanges in which the mobile telephone is accommodated, and the mobile phone is retrieved by searching in the subscriber information storage section of the exchange. As a result of finding out that the telephone is superimposed on the mobile telephone system via the mobile telephone exchange MTC, the call signal is transmitted from the exchange via the fourth type exchange to the MTC.
This is because it is transmitted to the TC. The following call receiving operation is exactly the same as the above explanation.

Note that the billing to the calling telephone is carried out in the billing information storage section of the subscriber information storage section of the exchange accommodating the telephone, which is exactly the same as billing for ordinary telephones.

Further, the call termination operation is exactly the same as the call termination operation in the above-mentioned car telephone system.

To release a mobile phone from the overlapping state of the car phone system, send a special number from the car phone to the mobile telephone exchange (MTC) (for example, **1l-xxx-xx-xxx-xx
xx) and cancel the location registration of the mobile phone from the subscriber information memory section of the MTC.

A superimposed embodiment of the present invention will be described below, which allows the mobile phone to be used even in a car, compared to the first method described above, although the modification of the mobile phone to the car phone system is increased.

In this case, the car phone and the mobile phone are hybrid-coupled when viewed from the car phone mobile phone body (Fig. 12(b)), and the two are connected in parallel when viewed from the mobile phone body. becomes. Therefore, for car telephones, [
It becomes necessary to modify the mobile phone main body to have a signal transmission and reception interface with the car phone as well as a signal transmission and reception interface that allows calls to be made and received with the mobile phone.

Specifically, the above-mentioned interface is made possible by the following method (1) or (2).

■A signal converter, a memory 1 discriminator, etc. are added to the mobile phone body for making and receiving calls from a mobile phone.

■Match the mobile phone's call signal interface to the car phone.

As a practical matter, it is not advantageous to implement (2) considering that mobile telephones overlap with ship telephone and aircraft telephone systems. This is because mobile phones are desired to be as light and compact as possible in consideration of portability. Therefore, the method (2) will be used, but since the car telephone system is widely used in Japan and it would not be economical to equip all car mobile phone units, it will probably be limited to certain types. Alternatively, it would be more realistic to install a separate mobile phone adapter. An example of an actual connection circuit is shown in FIG.
-sw is configured to be interlocked with each other, and is usually connected to the ■ side. When superimposing with another system, switch
Turn l-3Wz to the ■ side.

As a result of this operation, each transmitting and receiving radio section of the mobile phone is separated from the telephone section (the power supply is also turned off), allowing it to operate as a telephone section with the same functions as the telephone section of a mobile phone. becomes.

One way to provide the function (2) is to consider the condition (2) when developing an advanced car phone system. Furthermore, if the interface between the radio section and the telephone section can be made common when changing the system of local mobile communication systems such as car telephone systems and ship telephone systems, the feasibility of (2) will also be improved.

Now, if the measures described above are taken,
The ability to make and receive calls from a mobile phone brought into a car will be explained below.

First, a method for registering a location from a mobile phone to the MTC in FIG. 9 will be explained.

Assume that the mobile phone is turned on and ready to make a call. At this time, the mobile station originating operations i) to (ii) described above are carried out. The user moves on to dialing, but only needs to dial, for example, the special number ##01 as described above. From a car phone mobile device, add (YY-YYYY) to this number.
Y+P ID) signal is automatically transmitted to the wireless base station. When this signal is received by the MTC, the MTC subscriber information memory section stores the registration of the current location of the mobile phone (unnecessary if it has already been completed) as well as the registration of the location of the mobile phone.

In addition, in MTC, as mentioned above, the mobile phone is in a state where it is overlapped with the car phone system for the type 4 exchange that has an interface with MTC, and the location registration is performed by the own MT.
C. Notify the location information memory unit that registration is complete. The Type 4 exchange that received this notification
The ID is decoded, and the subscriber information of the mobile phone is transmitted to the third to first type exchanges that manage the mobile phone, and each is stored.

Now, after the above location registration is completed, a call can be made from the mobile phone using exactly the same operation as making a call from a car phone. Further, billing to the mobile phone is also performed using the same method as the above-mentioned superimposition method.

Next, regarding incoming calls, incoming calls are performed in the same manner as the superimposition method described above, but the ringing is not to the car phone (the ringing is performed to the mobile phone, and the user carries the phone while in the car). It becomes possible to make calls using the telephone.

In this case, the superimposition can be canceled by dialing a special number (for example, 1klkll) from the mobile phone.

The third method of superimposing a mobile phone on the car phone system is that it puts a heavier burden on the car phone system than the second method and requires modification, but it does not require any hardware or software operations for the mobile phone. There are also methods that do not require any changes. This will be explained below.

This is a method for making and receiving calls from a mobile phone brought into the car by having the mobile phone installed in the car operate as if it were a mobile phone master device. Sign.

■Equip a mobile phone with the function of a mobile phone master device.

In addition to ■■, the functions of the mobile phone control unit will be strengthened in order to achieve both the function of ■ and the original functions of a car phone.

Since it is not wise to make the above modifications be applied to all mobile phone terminals, it is recommended that only those mobile terminals that are intended to overlap with mobile telephones be equipped with the modifications described above.■.

A practical method is to provide the function (2) separately from the mobile device as an adapter.

Although the above description has been made regarding the case where the mobile telephone according to the present invention is superimposed on a car telephone system, it can also be realized in a ship telephone system or an aircraft telephone system by applying the same method. FIG. 5(b) or (e) shows the connection between these systems and the network configuration used in the present invention. Both systems have an interface with KTC-IV.

3, 5.8-3 (Regarding the method of superimposing the mobile phone system with the pager system) The mobile phone according to the present invention can be carried while walking on city streets and can make and receive calls in cordless phone mode. has already been explained, but below we will discuss how to combine it with the pager system currently in service.

The significance of combining the mobile phone system with the pager system is as follows.

That is, although it can be used in a cordless telephone mode in urban areas, etc., the radio wave transmission power of the mobile telephone or cordless telephone of the present invention is extremely weak at about 61. Therefore, if there are obstructions in the space near the transmission,
Radio wave propagation characteristics deteriorate, resulting in deterioration in call quality or, in some cases, inability to make calls. It is necessary to take into account that this often occurs especially in large buildings, underground malls, underground parking lots, etc.

In contrast, the transmission power of radio waves emitted from a pager-type base station is extremely large, at 25K, and the current service maintains a fairly good call rate even in a closed space on the first basement floor. Therefore, if the control channel of the cordless telephone master device or mobile phone device cannot be captured due to movement of location while the mobile phone is on standby in cordless phone mode (downlink control CH is being captured), the control channel of the mobile phone during standby The radio frequency of the channel will be changed from the cordless telephone to the paging frequency and the call will be on standby.

This is possible in terms of hardware, and when the noise level of the noise level detector exceeds a certain value in the mobile phone shown in Figure 4 (8), the frequency of the reception frequency synthesizer is set to a paging system according to instructions from the control unit. frequency. After that, the mobile phone operates in exactly the same way as a pager (portable device) of the pager type. FIG. 7(b) shows the flow of the call receiving operation.

K in Figure 5 (C) to the pager system calling base station.
It is assumed that a function has been added so that a calling radio wave is sent when a control signal for calling a PID comes from TC-1.

If the base station calls the pager in this state, the call switch is turned on (the handset hangs off). At this time, check the instructions on the call availability display (blue indicates possible, red indicates not) on the mobile phone, and if it is possible to make a call, use the nearest cordless telephone (or mobile phone) main device (S
ID), and sends out a call signal using its own PID on the uplink control channel. KTC-1 receives the PID+SID signal, finds that PID is in SID, and sends an incoming call signal addressed to SID.

The parent device receives an incoming call signal from KTC-1,
After confirming the prD+ of the mobile phone, an incoming call signal is sent to the mobile phone. After that, you can make a call using the same flow as when receiving a call in cordless phone mode (see Figure 7).
a)). During this time, the caller is provided with a voice service such as "You are currently being called by a pager. Please wait for a moment" from the local exchange for pagers (the first type exchange in the present invention). (Figure 7 (
(See b)) If the call availability display on your mobile phone cannot be displayed, walk to the first floor if you are in a basement, or near the exit stairs to the ground level if you are in an underground mall, and then check the call display again. Check the display, and if the call can be made, it indicates that the downlink control channel of the nearest cordless phone (or mobile phone) parent device has been captured, and the caller can be contacted by the same operation as above. It can be done. FIG. 7(b) is a diagram showing the operations described above in relation to the operations of each part of the network according to the present invention.

Finally, the functions of the portable cell phone wide area call type 5 base station (satellite abbreviated as KRC-V) will be explained.

Around the year 2000, the mobile phone system used in the present invention in Japan became very popular, and users could use it anytime, anywhere.
It seems that a situation is emerging in which calls can be made anywhere. However, even in this era, there are still certain areas of Japan where the above conditions are not satisfied. One of them is that when a mobile phone is located in a steep mountain range such as the Japanese Alps, the radio waves from the nearest mobile phone master device or pager base station do not provide sufficient input power to the mobile phone, and the incoming call signal cannot be received. This is the case when the information is not transmitted. Two of them are mobile phone owners who are onboard ships or aircraft on ocean voyages.

In addition to the mobile phone system used in the present invention, dedicated communications and other public communications may be considered for communication in these locations, and the system according to the present invention is also applicable. In other words, it is the use of a type 5 wireless base station for wide area calling of mobile phones using satellites. In the following cases, a call is made in response to an instruction by a control signal from a type 5 exchange.

■ When the subscriber predetermines the period and area of use, and calls are limited to a specific number of incoming calls (or to all incoming calls).

■ If a normal incoming call is received and there is no response, or if there is no response to a call from a wide area call type 1 wireless base station or a call from a wide area call type 4 wireless base station, the subscriber's contract will be suspended. When calling based on.

■ When the called party is a VIP or an emergency communication is required.

For ships sailing in the ocean, if the ship is equipped with other communication equipment, it will be possible to make and receive calls by adding a function similar to the system overlay to a car phone to the communication equipment. . That is, incoming calls are made using satellites,
After receiving this, communication using the mobile phone will be performed using the communication equipment equipped on the ship. The same applies to incoming calls while boarding an aircraft.

In steep mountains such as the Japanese Alps, even if a wide area call is made by satellite, a response cannot be expected because there is no wireless equipment nearby, so it is desirable to include communication information in the call signal. In this case, the called party can receive the sent communication information by displaying it on the display of his/her own mobile phone or listening to it as audio information.

The traffic of transmission signals from mobile phone wide area call type 1 (n-1°4 and 5) radio base stations will be explained. As described above, most of the mobile phone traffic used in the present invention is cordless phone mode traffic.

Therefore, although only a small number of wide-area calls are made overall, the type 1 radio base station has relatively large traffic. Next is the fourth type wireless base station, and the one with the least traffic is the fifth type wireless base station, which uses satellites. In this respect, since satellites are often used for other communications, it is thought that the calls to mobile phones according to the present invention will be used in a way that the facilities of other systems are shared. Therefore, the cost of the system does not become extremely high, and it is considered possible to use the system in a harmonious manner as a whole.

3.5.9 (Functions other than the phone call function of the mobile phone) Since the mobile phone used in the present invention can make and receive calls at locations nationwide, it has various benefits other than the phone's original phone call function, such as the following. be.

The most important of these is probably the credit function, which has an overwhelmingly improved identification ability as a personal identification (ID) compared to current magnetic cards or IC cards. Table 3 shows a comparison of these ID functions.

Table 3 Comparison of functions between an IC card (magnetic card) and a mobile phone as an ID (i) Credit card function Since the mobile phone according to the present invention has a PID different from others, the credit amount is displayed on the display of the phone, It can be used as a payment method in shops etc. Specifically, it is as follows.

Mobile phone (Mr. A, a PID student, went shopping at store B. At this time, the amount to be paid was 85,000 yen. When turned on, the downlink control channel of the mobile phone master device (PID equipment) installed in store B is captured, and the location registration of the own mobile phone is completed as described.In other words, the location registration of the mobile phone is completed as described. The information is stored in the first type exchange subscriber information storage section.

Next, Mr. A presses the PID function button and number in the following order (###85000) to display it on the display section.

Show this display to the cashier at the store, confirm it, enter your PIN and turn on the call button, and the mobile phone master device PID
, this signal is transmitted to the storage section of the first type exchange subscriber information section, and stored as P[)I+PID, +85000 in the credit storage section of the special information storage section. however,
If you have a history of insolvency, you will be asked to answer back that you cannot use your credit card.

After this process is completed, there is a voice answer from the KTC-1 that says, ``PID is now available.PID is being sent from the mobile phone.''
, there was an entry for the memory entry of the credit amount to the owner. The amount is 85,000 yen” signal appears on P.
This is done for IDI (and PID, mobile phone or PTD, landline phone).

However, the signal to the PID and landline telephone is not a voice, but a bell ringing and display on the display ¥85,000, PTD+
(numerical display such as) may be made.

As a result of the above, Mr. A's credit card payment at Store B is completed, and the rest of the process is to send the special information among the subscriber information of the KTC-1 to the credit company with which Store B has a contract (hereinafter referred to as Company C). Every fixed day (or every day) there is a signal (amount) stored in the credit storage section of the storage section.
be transferred.

Company C aggregates the amount, charges the monthly payment payment bank for each PID, debits the payment amount from the deposit account specified by Mr. A, and deposits it into Company C's account.

Company C deposits an amount commensurate with Mr. A's credit amount into the store B's account, and all credit card payments made by Mr. A at store B are completed here.

(iii) Mobile phone into which a telephone card can be inserted The mobile phone according to the present invention has a PIN number added to the PrD to prevent it from being misused even if it is stolen. With the rapid increase in the number of mobile phones, the convenience provided to phone card holders will increase by making mobile phones compatible with phone cards.

The following two ways can be considered as actual usage.

■ How to insert a telephone card into a mobile phone so that the mobile phone operates as if it were a card-type public telephone; ■ Adding a telephone card adapter to insert a telephone card into a mobile phone allows it to function as a card-type public telephone with the functions of ■. Methods to make them work equally well. Both methods (■) and (3) above are thought to be possible as telephone card readers will become smaller in the future, but for the time being, we will apply method (■) and wait for the spread of mobile phones. Therefore, ■ will be introduced.

Furthermore, since not only a telephone card but also a magnetic card or an IC card can be inserted and used, it is possible to allow the user to select a payment method (settlement method) desired by the user.

! 1ii) Message service When the mobile phone turns on the power switch, the message addressed to the PID that was previously transmitted is stored in the subscriber information memory section of the first class exchange that manages the area, and the PID is If you wish to receive a message service,
The message service can be received by pressing the message service reception function button ##90.

Gv) Directional Guidance Function When using the mobile phone according to the present invention in cordless phone mode, if the power switch is turned on,
Mobile phones (cordless phones) located in parks, roads, etc.
Since the downlink control channel of the parent device is always captured, it is possible to know the name of the place where the user is located by displaying the SID of the parent device on the display of the own mobile phone. That is, a request signal for displaying the SID signal of the mobile phone master device is transmitted to the mobile phone master device that is acquiring the control channel. That is, when function button ##80 is pressed, the SID that is being captured at that time can be displayed.

Also, inform the first-class exchange in advance of the PID of your destination (visited place) (Route Guidance Service Mode ##82), and the PID matches the street address of the city, town, village, etc. When approaching the address, the mobile phone's ringer notifies you that the destination is nearby, and when it captures the control channel of the mobile phone's master device of the visited destination's SID or PID, a high-level ringing sound alerts you to your current location. Notice. Thus, the mobile phone owner can go to the desired location without any effort.

(■) (Function as a substitute for other certificates) ■ Substitute for a driver's license In addition to the PID of the mobile phone, the driver's license PID (MPI
By adding the digit (abbreviated as D) and functioning as the license number of a driver's license, it can be used as a driver's license for a car. The MPID includes information such as the type of driver's license, driving history, and the age of the offender. Furthermore, in this case, among the information stored in the subscriber information storage section of the mobile phone, information regarding driver's licenses needs to be transferred to an organization managed by the Public Safety Commission.

■ Functions as membership cards of various organizations including golf membership cards In addition to the PID of mobile phones, PrD of golf membership cards
(abbreviated as GPID) allows it to function as a membership card.

It also functions as an attendance card for companies, offices, etc. Furthermore, regarding the wireless opening and closing of electronic lockers,
Only a specific PID owner can open and close it.

In the future, by concluding a treaty with a foreign country, it will be possible to use it as a substitute for a passport (PID + Passport PID (PPID), etc., making the passport issuance process more efficient.

■ Function as a substitute for tickets for JNR, private railways, theaters, etc. Insert your mobile phone into the ID confirmation device at the ticket gate of the JNR or private railway, enter, use transportation to your destination, and then exit the ticket gate. If the card is inserted into the ID verification device again, the charges can be paid in the same manner as for purchases using credit as described above.

■ Function as a means to realize a paperless society Functions as a ballot paper for general elections, local elections, etc. That is,
By notifying the election management committee in advance that your PID matches the information on your resident card and obtaining permission, you can vote at home without having to go to the polling place on the day of voting. It will be possible to get it done. In other words, after displaying the candidate name, candidate number, etc. on the display of the mobile phone and confirming that there are no mistakes, the voting number (e.g. ###1) is displayed.
When dialing , the transmission signal is sent via the subscriber information storage section of KTC-1 to the voter information storage section managed by the election management committee of that district. Here, the PID and the candidates voted for are confirmed, and if the votes are valid, they are transferred to the counting center as valid votes. Further, voters who do not own a mobile phone may use the conventional voting method, and even those who own a mobile phone may change to the conventional voting method due to some circumstances. This is because the voting station and the voter information storage unit are connected by a direct line, and the PID, whether or not voting has been completed, etc. can be immediately determined. However, when voting using a mobile phone, it is necessary to submit the person's voice print, password (numbers) (election PID), or signature in advance to confirm that the person is the person voting. By using PID + PID for each purpose in machines that directly ask for or against referendums or national politics, it becomes easier to participate in national politics by displaying the vote for or against.Even in national censuses, etc., work efficiency can be improved. We can expect improvement.

(vil Function as an input terminal for deposits and withdrawals to bank deposit accounts, purchases and sales of securities such as bonds9 stocks, etc. PID and PIN number of mobile phone (Bank PID
) or the owner's voiceprint, etc., it becomes possible to substitute functions such as the title.

3.6 (How to use mobile phone and system operation) Below, the mobile phone according to the present invention was used while walking inside a house.

Also, we will explain how to use it in a car or other vehicle, as well as general usage such as using it for credit purposes other than communication or as a certificate, and the system operations associated with this.

First, the usage when you are in your home area is no different from a normal telephone or a cordless telephone currently being serviced by NTT, and the processing on the network side does not involve any particularly new operations, so a description thereof will be omitted.

i) Consider a case in which a user leaves his/her home area and, for example, takes a walk to a nearby park in order to make or receive a call from a Type 1 roam area. Here, enter the mobile phone owner as A.
Mr. A's PID is PID.

shall be. Now, Mr. A began his walk carrying his mobile phone with him, but normally the power switch of his mobile phone would be turned off.

That is, this is to save power and extend the life of the battery. Of course, you can leave the power switch on, but in this case, the mobile phone that is receiving the control signal will use the downlink control channel sent from the mobile phone master device installed in each nearby house as you walk. If the parent device receives this signal, the location registration will be changed every time the parent device changes. That is, the downlink control channel sent from each parent device includes the ID of the parent device.
A SID signal is constantly flowing, and the mobile phone that receives this checks the parent device SID signal in its own memory and finds that the SID is different from the SID already stored (
In other words, it detects that it is in a type 1 roam area), and at this time sends its own PID and signal addressed to the new parent device using an uplink control channel for registration.

The new master device that received the PID+ signal searches its own memory and recognizes that the PID is not the PID of the mobile phone that is always paired with the own device. A request is made to the subscriber information storage unit to register the location of the mobile phone.

At this time, the signal is between the parent device 5ID2 and the mobile phone PID+.
Therefore, the subscriber information storage unit of the first type exchange that received this signal rewrites the current location of the mobile phone PID+ from the home area SID and stores it as the parent. If you are in device 5IDz, new information will be stored. Furthermore, at this point, it is of course possible to use the mobile phone as a new device, and Mr. A can talk to the other party on the road via a third party's parent device (SIDz).

In other words, for making a call, the new device SID2 is already accessible, and when the same dialing operation as for making a call from the home area is performed, the call signal from the mobile phone is accepted via the new device. By searching the subscriber information memory unit in the first exchange, it is confirmed that the current location of the mobile phone is registered in the parent device 5ID2 of the first type roam area, and the mobile phone is notified to the first type charge exchange 1 billing unit. When the call starts, the user is instructed to pay using PID and name.

The process of investigating the telephone number of the called party, communicating a predetermined relay route, and sending a ringing signal to the called telephone is the same as a normal telephone.

Next, regarding the incoming call to the mobile phone, the incoming call signal from any phone anywhere in the country will go to the first type exchange, just like an ordinary phone call, but here the called party will be connected to the mobile phone. When it recognizes that the telephone is the destination (this can be easily identified because the PID signal structure is different from a regular telephone number), the location of the telephone is always registered in the subscriber information storage unit of the exchange to determine whether the telephone is in the home area or not. Search the storage section and check each time.

As a result, when it is confirmed that the mobile phone is currently registered in the parent device SID, an incoming call signal addressed to the mobile phone PI DI is sent to the parent device 5IDz. Upon receiving this, the parent device 5ID2 searches the PID signal memory section within its own device, and when it confirms that the PIDI is registered in its own service area, sends a PIDI signal to call the mobile phone using the downlink control channel. Send. Upon receiving this signal, the call bell section of the mobile phone rings, and when Mr. A puts it into a hang-off state, he is able to talk to the caller. In this case, the type 1 exchange sends the caller's calling back tone, etc. in the same way as a normal telephone, so the details will be omitted.

As described above, in the vicinity of the home area, the location registration of the mobile phone is only performed in the subscriber information storage unit of the first type exchange, but not in the second type or higher type exchanges. This is natural since Mr. A is in the area managed by the first-class exchange, so there is no need for intervention by the higher-level exchange. In other words, the incoming call signal from all over the country and from this phone is transmitted via the first type exchange that manages the mobile phone, so the first type exchange (the exchange that manages the first signal roam area) This is because it is sufficient to search the location registration storage section of the subscriber information storage section housed in ).

In the above explanation, the mobile phone carried by Mr. A was in a state where it could make and receive calls, that is, it was in a state where the power was on. However, the power is normally off, and the normal usage would be to turn it on only when Mr. A wants to make a call. However, in this case, if there is an incoming call, the current location of the mobile phone will be Since it is not registered in the subscriber information storage section (location registration storage section) of the type 1 exchange, it is assumed that the subscriber is in the home area and is called. If the home area is equipped with a fixed-line telephone set to pair with the mobile phone, it will ring, but if it is not, at a certain timing, the first-class exchange will indicate that the mobile phone is not in the home area. judge,
An automatic response is sent to the caller saying, ``The mobile phone you are calling from is not in your home area.'' Therefore, users such as salesmen and doctors who need to constantly make and receive calls will use the device with the power turned on at all times.

Now, suppose Mr. A arrived at a park not far from his home, sat down on a bench, and was resting for a while when he remembered something and wanted to make a call using the mobile phone he was carrying. In the park, mobile phone master devices are installed on the upper rings of telephone poles in various places, and it is assumed that it is possible to talk to any of these master devices at any place in the park. When Mr. A turns on his mobile phone, the mobile phone radio starts capturing the downlink control channel from the nearest parent device. Therefore, when the downlink control channel of a certain parent device 5ID3 is captured, the communication partner's 5ID3 signal is stored in the memory section of the own device, and the own PID signal is sent to the parent device S through the uplink control channel.
Send to ID.

Upon receiving this, the parent device S ID stores the PID in its own device memory, and at the same time sends out a location registration request signal (P ID, +S ID3) addressed to the first type exchange. Upon receiving this signal, the first type exchange transfers the signal to the location registration storage section in its own subscriber information storage section, rewriting the conventional storage and storing that the PID is within the service area of the parent device 5ID3.

As above, the current location of Mr. A's mobile phone has been registered, so future calls will be made in the same way as when Mr. A had always turned on the power and his mobile phone was always ready to make and receive calls. This is possible through action.

After completing the above-mentioned business, Mr. A was on his way home, but as he passed under the railway guard, an incoming call signal rang from his mobile phone. This ringing had a different tone from the incoming call from the mobile phone's main unit, so the mobile phone's wide area call
I immediately knew that it was the ringtone coming from the seed wireless base station. When I looked at the call availability display on my mobile phone, I saw a red light indicating that calls could not be made, so I gave up trying to turn on the call button (in this case, the incoming call button works as an input button).
I continued walking. When I passed under the guard, the light changed to blue and became an incoming call tube, so I turned on the button. Then, the call became available, and when I began to say, "Mojimoji," the person on the other end was Mr. A's wife, and I was able to ask her about the business.

ii) Calls made and received from Type 2 roam area Now, after completing the above business, Mr. A decided to end his walk and returned home, and now he decided to go to the office to handle a certain business. Suppose we did.

Although Mr. A's office is located in the same city as his home (for example, Hoya City, Tokyo), his office is located in a different area (a Type 2 ROHM area) where the telephone exchanges that house telephones are different. -I decided to go out. Mr. A's mica
Since the car is equipped with a car phone, there is no problem with making phone calls from within the car, but due to circumstances where the car phone is subscribed to, if you use it for personal use, you may be able to access someone else's phone without permission. I don't really feel like borrowing it, so I almost never use it. In such a case, as already detailed, the mobile phone system according to the present invention can be superimposed on the car phone system, so if this is applied, the user's mobile phone can be used even in the car, and billing can be done using the mobile phone as well. This is done in a timely manner so that it does not cause trouble to others.

However, let us assume that this was not necessary today and that we arrived safely at Mr. A's office.

Mr. A could go straight to the office and work, but he remembered that he needed to go shopping, so he went shopping at a store near the office. A
His shopping trip was to get a new top and bottom of his suit. Mr. A made the payment using the mobile phone he carried without using cash. As explained in the previous chapter, this is possible. On the way home, I remembered another matter and turned on my cell phone to make a call. Then, it captures the downlink control channel of the mobile phone master device (SIDz) installed on a nearby utility pole, and uses the same process as described above to control the mobile phone A device. K.T.
A current location registration request signal is sent to the subscriber information storage unit (location registration memory unit) of C-1-(21).The location registration memory unit that receives this signal determines the current location registration request signal based on the PID of the mobile phone and the signal configuration of the signal. The phone determines that it is a mobile phone whose home area is not in this exchange but in another Class 1 exchange (KTC-1-1) in the same city, and registers the position of the mobile phone in its own location registration memory ( PID, +S!D,
), and sends a location registration completion signal to the second type exchange (KTC-If-1) that manages the own device and the mobile phone (manages the second type roam area), and sends a location registration completion signal to the mobile phone master device. 5IDs reports that it has received a location registration request for mobile phone PID under KTC-I-1.

Upon receiving this report, the second type exchange stores the information in the location registration storage section of its own subscriber information storage section, and at the same time, the first type exchange that manages the home area of the mobile phone in the subordinate exchange KTC-I-1)
It transfers the location registration signal received from I-2 and requests the location registration storage unit in the subscriber information storage unit to register (rewrite) the location registration location of the mobile phone. In response to this, the first type exchange (KTC-1-1) rewrites the information in the subscriber information storage section.

From this point on, Mr. A is now able to make calls to any location in the country, but the network operation in this case is exactly the same as the above-mentioned call within the park, so the explanation will be omitted. However, regarding billing, charges are made to PIDI in the billing information storage section of the subscriber information storage section of the first type exchange, and the billing information is periodically transferred once a month to the first type exchange billing section where Mr. A is located.
The amount will be billed to Mr.

Also, the incoming call to Mr. A's mobile phone will be explained. Incoming calls are possible after location registration is completed, but if the caller is under the switchboard that manages Mr.
The current location of the called party is determined at the level of TC-1-1, the incoming call signal is transferred to KTC-1-2 via KTC-n-1, and the incoming call to the mobile phone is executed.

Next, when a call is made from a telephone under the first type exchange KTC-1-2 that manages the parent device in the first type roam area, the connection is completed only by KTC-1-2.

Furthermore, if the call is made from a place other than the above two cases, that is, from a higher-order roam area that is above the type 2 area, the called telephone signal enters KTC-1)-1, so the called telephone signal is sent to KTC-1)-1. When the signal is analyzed and it is determined that it is addressed to a mobile phone, K
The subscriber information storage section in TC-1)-1 is searched to check the location registration of the called mobile phone. As a result, it is confirmed that the mobile phone exists in the roam area managed by the first type exchange KTC-I-2, and KTC-1-/2
Transmits the destination call signal. KTC-I that received this signal
-2, the own subscriber information storage unit is searched and the mobile phone master device (S I
D. PID of the mobile phone via.

Sends a destination call signal. As a result, the bell section of the mobile phone rings, and Mr. A is able to enter the hang-off state and begin the conversation.

The above explanation was for the case where the call was completed within the Type 2 roam area. The operation of this system will be described below when the owner moves from a type 1 roam area to a type 2 roam area while the mobile phone is powered on and in a standby or talking state.

One day, Mr. A decided to walk from his home (Hoya type) to his office and carried his mobile phone with it turned on. As mentioned above, when a mobile phone leaves its home area, it receives a downlink control channel signal sent from a mobile phone master device installed in a third party's residence or on a utility pole on the street. Correspondingly, the mobile phone used the uplink control channel to send out PID and signals to register the location, but as the walk progressed, it reached a place beyond the area controlled by the first type exchange. At the next point, when this area is exceeded, the parent device installed there (
As before, the location registration signal is sent out by exchanging signals with the mobile phone (which is under another type 1 exchange KTC-1-2), but the PIDI signal is received from the mobile phone via the parent device. Another first class exchange KTC-1-
2 (located in the same Hoya city), as a result of investigating the PID and signal, it was determined that the mobile phone in question was not a phone under its own exchange (
It is determined that it is another type 1 exchange KTC-1-1,
Type 2 exchange KTC-ff-1 that manages the own exchange
A location registration signal of the mobile phone is sent to the mobile phone. The subscriber information storage section of the second type exchange that received this signal sends the PI to the white section.
A first type exchange KTC-1- that stores the D, +SID, and l signals and manages the home area of the mobile phone.
1 to register the current position of PID.

When the above operations are completed, the procedure is completed indicating that the mobile phone is in the second type roam area, and it is possible to make and receive calls.

The above explanation is that the roam area was changed while the mobile phone was on standby, but even during a call, the same location registration as above is performed, except that the control operation changes the call channel due to the change of the parent device. It turns out.

iii) Receiving a call from the third-class loam area Mr. A decided to drive his car one day to visit a friend who lived in the Musashino area (a third-class loam area). Since I rarely visit this friend's house, I was confused because I didn't know which house I was looking for, so I decided to park my car on the road, use my cell phone to call my friend, and get directions.

First, when the power switch is turned on, a location registration request signal enters the subscriber information storage unit (location registration unit) of the first-class exchange (KTC-T-3) that manages this area according to the process already described. It's here. Upon receiving this signal, the subscriber information storage section investigates the PID r signal of the mobile phone and recognizes that the mobile phone has a home area in another city. ) to the second type exchange (KTC-II-2) that manages PID+
We reported that we are requesting signal location registration. As a result,
The subscriber information storage unit of the second type exchange memorizes the incoming signal and after a thorough investigation, recognizes that the mobile phone has a home area in another city, and manages the local exchange (and the mobile phone). These signals were transferred to the third-class exchange (KTC-I[1-1), which is the upper-level exchange that is currently in use.

KTC-1) 1-1, which received this signal, stores it in the subscriber information storage section of its own exchange and also stores the PIDI location registration in the second type and first type exchanges that manage the mobile phone. I requested that.

It should be clear from what has already been explained that once the above conditions are completed, Mr. A's mobile phone will be able to make and receive calls to and from any phone located anywhere in Japan. As mentioned above, Mr. A called a friend at the place he was visiting and asked for directions, but it is not necessarily necessary to use this method. By making a request, you can achieve a similar goal without having to bother your friend.

iv) Calls originating from/receiving from a Type 4 ROHM area Mr. A decided to travel to the Takasaki region (Type 4 ROHM area) for a certain 8 business trip. I boarded the train carrying my mobile phone. I didn't have anything special to do on the train, but I left my cell phone turned on in case I received a call from my office. Just before that, an incoming call signal rang on my mobile phone.This was because each car on the train I boarded was equipped with a mobile phone master device, and the mobile phone master device whose location was registered was superimposed on the train radio system. In other words, when a passenger receives a call, an incoming call signal is sent from the train radio base station to the train that Mr. A is riding, and the train radio is activated. The control unit checks Mr. A's location registration, determines which car's mobile phone master device should call the mobile phone, and sends an incoming call signal.The following operations are for normal incoming calls. Depending on the type of train, there are cases where only one or two train public telephones are installed on the train.In this case, the incoming call signal is sent directly from the mobile phone wide area call type 4 base station to the mobile phone. An incoming call signal is sent to the charger.The owner of the mobile phone receives this signal, goes to the nearest public telephone, connects the mobile phone to the connection unit, and receives the call. .

Mr. A answered the call using the former method, then relieved himself and got off the train at Takasaki Station. Now, while I was walking on the road for a while, I felt the need to contact someone at my office in Musashino, so I turned on my cell phone.

Then, the location registration is completed in the subscriber information storage section (location registration section) of each of the following exchanges by the same process as already explained.

■ First to third type exchanges that manage the roam area ■ First to fourth type exchanges that manage the home area After that, the mobile phone can make and receive calls.

・After completing his errands in Takasaki, Mr. A decided to spend the weekend enjoying golf at a golf course in the region. Mr. A is also a member of this golf course, and was asked to present his membership card or mobile phone at the reception desk, so he presented his mobile phone. By making a call between Mr. A's mobile phone and the mobile phone master device owned by the receptionist, the receptionist was able to verify the 10 (GPID) of the golf club's membership card and confirm that Mr. A is a member. We were able to immediately confirm that this was the case.

Mr. A spent the weekend playing golf and returned home satisfied.

On another day, Mr. A traveled to a hot spring resort in Minami Kishu with his wife for a week. Mr. A and his wife each brought their favorite mobile phones with them, and they made great use of them when they went sightseeing in the region. Sunday of this week was voting day for the general election. Previously, if you were absent from your polling place on Election Day, you were required to vote absentee. This required a complicated procedure.

However, near the year 2000, there was no longer a need for such complicated absentee voting procedures, and voters could vote at any voting location nationwide on the day of the election.

The power of the mobile phone of the present invention, which can be used to make and receive calls anywhere in the country, has contributed greatly to this. That is, as explained in the previous chapter, it has become possible for a mobile phone to have the role of confirming the user's ID and serving as a voting paper. Voters must know their scheduled voting location and voting time in advance by the day before election day.

PID of the mobile phone used for voting, ID used only for elections (election ID), voice print and information about the person (
Register information such as place of birth, date of birth, family composition, etc. On the day of voting, call your assigned voting location (control center) from the designated time and location using your mobile phone.

Then, at the management center, PID, election 10. confirmation.

In addition, we will check your voiceprint and ask you questions about your place of birth and date of birth (
If you pass these checks (automatic voice questions and response checks), your identity has been verified.
Move to voting operation. Mr. and Mrs. A successfully completed their absentee voting through this process. Note that the election 10 used by Mr. and Mrs. A will automatically disappear upon completion of voting, and protective measures have been taken such as making it impossible for a third party to vote using the mobile phone.

■) Calls made and received from Type 5 roam area Mr. A decided to travel to another 8 Hokkaido regions.

As an example, I carried a mobile phone with me, but by turning on the power, the location registration is completed in the subscriber information storage unit (location registration unit) of each of the following exchanges, and the mobile phone can make and receive calls. became.

■ Class 1 to 4 exchanges that manage the roam area ■ Class 1 to 5 exchanges that manage the home area vi) How to use mobile phones in wide area calling mode and use the location detection function Mr. A's son, Mr. B, is currently attending university, but Mr. A decided to go mountain climbing in the Japanese Alps with a friend during summer vacation, so Mr. A decided to bring a mobile phone to Mr. B.

Mr. B decided to carry his mobile phone, which he regularly uses, since it wouldn't be part of his luggage. And in advance KTC-
I had requested that V be called by satellite. I was away from home and traversing the Alps for a few days when my cell phone rang.

The tone of this ringing was different from the tone from the mobile phone master device and the mobile phone wide area call type 1 or type 4 base station, so this was the same as the tone from the mobile phone wide area call 5th type by satellite.
I could immediately identify that the call signal was from a different base station. When he looked at the display on B-kunriki9's mobile phone, he saw the message ``Pray for your safety, Ando,'' and realized that it was a telegram of encouragement from Ando-kun, who was studying at the same university as B-kun. I felt 100 times more energetic and was able to descend the mountain safely.

One day, Mr. and Mrs. A went to an amusement park with their son, his wife, and their grandson Ren. This amusement park is very large, and it was expected that it would be difficult to contact each other if we got separated, so we each carried a mobile phone in preparation for this. Also, Sun Ren was given a mobile phone (powered on) instead of a lost child. Mr. A and his wife, their son and his wife, and their grandchild had different interests, so they were separated, but when the grandchild got lost, they were able to confirm the current location and immediately arrive at the scene, and also at mealtimes and on the way home. In addition, we were able to easily communicate with each other regarding the reunion location, etc., and had a very comfortable day.

vii) Omission of location registration storage operation for the mobile phone in the exchange managing the roam area In the above explanation, in order to make it technically clear that the mobile phone according to the present invention can be used in the roam area, the roam area is Although the explanation has been made on the premise that location registration is performed for the mobile telephone in the same manner as in the exchange managing the home area in the managing exchange, this is not necessarily necessary in practice.

Instead, ■Every time a call is made from a mobile device, call information (billing information) is sent to the exchange (any of Types 1 to 5) that manages the home area.
need to be informed.

(2) Regarding incoming calls from mobile devices Even if a call is received from an area near the roaming area, it is necessary to register part of the incoming call signal in time to the fifth to first class exchanges that manage the home area.

This results in disadvantages such as: (1st) Figure (al ~ (see treetop)) Similarly to the above, if the exchange memory that manages the home area also stores the position information of mobile phones in the roam area of multiple exchanges, the system will be affected even if omitted. Although it does not become inoperable, the operations described in (1) and (3) above are required.

vFn) Functions of a landline phone that pairs with a mobile phone installed in the home area If a landline phone that pairs with a mobile phone is installed,
By obtaining the current location information of the mobile phone from the first type exchange location information memory section, it is possible to provide the following functions.

■If a mobile phone receives a call while it is registering its location in the roaming area, and the mobile phone does not respond within a certain period of time for some reason, the call will be terminated and the call will be sent to the landline phone in the home area. Perform incoming call forwarding. It is also possible to display the calling telephone number and the current registered location of the mobile phone.

- When the owner of the mobile phone returns to his or her desk, the status of calls made and received during the user's absence can be read out and recorded business matters can be played back.

3.7 (Effects of the Invention) By applying the present invention to a mobile phone system, it is possible to achieve improvements that were considered technically and economically impossible in the past, such as inside a residence, a department store, a baseball field, or the premises of an event venue. The ability to make and receive calls at any time, anywhere, even while walking on the road, has a huge effect on making social life more convenient for the people. Further, by using the mobile phone for functions other than the telephone call function, for example, for personal identification (ID), credit functions, advanced functions such as IC cards, etc., it brings great benefits in social life.

[Brief explanation of the drawing]

Figures 1 and 2 are configuration diagrams of conventional systems, and Figure 3 (al.
3(b), 4(a) and 4(b) are block diagrams of each device constituting the method of the present invention, and FIG. 5(a) ) (b) and (C
) is a system configuration diagram when the system of the present invention is deployed nationwide, Figure 5 (dl) (a) is a block diagram for explaining a partial configuration of the system, and Figure 5 (f) is a system configuration diagram of the system of the present invention. FIG. 6 is a signal form diagram showing an example of assigning personal identification information (PID) according to the present invention, and FIG. Figure 7 (bl is a diagram showing the signal flow of an incoming call in a different state, Figure 7 (C) is a diagram for explaining the billing signal, Figure 8 ( a) (b) (c) and (d) are diagrams showing an example of the system configuration used in the present invention, FIG. 9 is a diagram showing another system configuration example used in this system, and FIG. 10 is a diagram showing another system configuration example used in this system. Schematic diagram showing the signal flow of a call in the state of
) Figures (a) to (g) are diagrams showing the operational flow during location registration used in the present invention, and Figures 12 (a) and (b) are block diagrams applied to a mobile terminal of another system used in the present invention. be.

Claims (1)

[Claims] (1) A plurality of type I exchanges accommodating each parent device of a plurality of mobile phones existing within a unit service area, and at least one type I exchange accommodating a plurality of the type I exchanges via trunk lines. i+type 1 exchange and i=1, 2, 3,...
The switching system is configured such that the i+1 type exchange covers the entire service area in a hierarchical arrangement such that the home area where each of the plurality of mobile phones is normally located and each mobile phone are The designated information assigned to distinguish them from each other is displayed in the i-th area that manages the home area and the service area where the mobile phone is currently located.
has the function of registering with the class and i+1 class exchanges,
to the type i exchange that manages the home area in response to receiving a predetermined cancellation signal every predetermined period or from the type i exchange that manages the service area where the mobile phone is currently located; A charging method in a mobile phone system configured to transfer charging information.