JPS63287123A - Speech path setting system in portable telephone system - Google Patents

Abstract

PURPOSE:To efficiently set a speech path even when a portable telephone to be called goes anywhere by applying broad band call when said telephone set is moved to other area and setting the speech path by its reply path. CONSTITUTION:When the telephone set A to be called is moved to other area and does not reply a call from an originating telephone set B when the originat ing B belonging to exchange systems 1-4 calls the telephone set A to be called belonging to exchange systems 5-8, broad band call is applied from a broad band radio base station KRC-III-1. When the telephone set A receiving the call replies the call, a reply signal is sent to said call base station KRC-III-1 via a nearby portable master telephone system T and exchanges 9, 10. The exchange 7 receiving the reply signal confirms it to be a reply to the broad band call station belonging to itself to set the speech path of exchanges 1 3 7 10 9 to connect the originating telephone set B and the portable telephone set A to be called.

Description

[Detailed Description of the Invention] 3.1 (Technical Field of the Invention) The present invention relates to a mobile phone using a mobile phone that is portable and capable of making and receiving calls at any location connected to a general public telephone network, a private telephone network, etc. This paper relates to a communication route setting method in a system.

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 input electric field value required for the opposing receiver being not satisfied.

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 home), you may find it difficult to refuse someone else's phone call for various reasons, or if you can't find a public phone on the street in the city, or if you don't have money or a telephone. If you don't have a credit card, the red phone in front of the store becomes unusable after midnight, and it can be difficult to get to a place with a public phone in a crowded place such as a baseball field or an event venue. 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 the call will arrive at a location other than your home or office. Additionally, if two people wishing to talk to each other are traveling in different locations, access may not be possible using traditional telephones.

In addition, emergency notifications can be made more easily and quickly than the current system, and if mobile phones can be used for credit (credit function) or as a substitute for certificates, as will be explained later, it would be even more convenient. .

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 INS2-21).The system based on this concept (called the PID concept) is as follows. It 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 personal number (PID) by writing it on a magnetic card, for example. 20 The PID written on the PID card will be shared even when terminals (the terminal number is SID) are used for landline telephones, car telephones, 2 train type telephones, etc., and will be made public by listing them in the telephone number directory, 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.

When each subscriber arrives at the location where the above terminal is located,
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, the originating subscriber does not know the location of the terminating subscriber (but can make a direct and immediate call).

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 there is only one 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 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 for mobile message communication system", IEICE Communications System Study Group Materials CS 85-139 (1986, 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(a), 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 equipped with a means for encoding and automatically transmitting a subscriber number different from the subscriber line number of the subscriber line, and each exchange is provided with the cordless telephone is provided with a means for decoding to which exchange this cordless telephone belongs from the above-mentioned subscriber address, and transmitting the location information and billing summary information of this cordless telephone to the belonging exchange; The present invention is characterized in that it includes a means for transferring incoming calls or totaling charges based on the above 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.

Furthermore, a plan is being considered 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 by having one type of device. (Refer to Japanese Patent Application Laid-open No. 151136/1983).

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 5W, while the transmission power from a cordless telephone is currently 61W.
This is because the level is as low as 1/800.

If the transmission power of the cordless telephone is increased to about 5W, 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.

Also, when a subscriber makes a call, a line is connected from the station that accommodates the call (the originating station) to the destination subscriber's station (the terminating station) via several relay exchanges. . Generally, there are multiple connection routes in a complex network, and selecting one route from among them is called routing.
ng).

In a telephone network, when all the lines on the first route selected (a group of lines going from one station to the next station on a connection route are collectively called a route) are busy, the second route is busy. Select the line. When the second route line is all busy,
Further, routes are selected in order, such as the third route.

This kind of routing method is called multi-stage detour routing (
Multi Stage 81te to nate Rout
ing), and the method of successive relay exchange using this method is called the detour relay method (see FIG. 2(b)).

In the telephone network, the far-to-n rotation method, which is one of the multi-stage detour routing methods, is used as a method that satisfies the above conditions.
ear-rotation) is used. This is a method in which routes are selected sequentially from the route to the exchange station furthest from the originating station to the nearest exchange on a multi-stage star network from the originating station to the terminating station ( (See Figure 2(C)).

This method avoids the use of wasted equipment by preferentially using diagonal lines with short line distances.Also, diagonal lines can be used with high efficiency, and calls that overflow from them can be combined with calls on other sections. The station where the calling party is accommodated (originating station)
Because of the need to perform this work alone, the traffic status at other exchanges was not fully understood, and optimal routing settings could not be made.

3.3 [Definition of Terms] Mobile phone is one of the main components of the present invention, and is carried by the user at all times, facing a mobile phone master device to be 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 6mW
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.

Further, in some cases, a plurality of mobile phones may be arranged for one fixed phone, which will be described below. For example, if each member of a family of five uses mobile phones with different PIDs in a house, five 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 U1 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 has the function of registering, changing, and deleting their location.

FIG. 3(b) shows a bronch configuration of a 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. A fixed telephone has self-identification information SID, which is different from other fixed telephones, as well as piD. It is sometimes abbreviated as SID. In the main text, the landline phone in the home area of the mobile phone aP ID is designated as SID, -H or simply S.
It is sometimes written as ID. 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).

■ Alternate call receiving function when a call cannot be received to a mobile phone ■ Function for transferring incoming calls to a mobile phone 1. Facing the aforementioned mobile phone, it is 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. Figure 4) shows its configuration. The mobile phone master device is sometimes abbreviated as SID. SID the mobile phone master device in the home area,
It is sometimes written as

Regular telephone A telephone used by regular telephone subscribers that is not a mobile telephone.

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 an area with a spatial extent 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.

Type 1 exchanges usually accommodate telephones within the service area of ordinary residences, etc., and handle calls to and from the own service 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, the voice dialing signal sent from the mobile phone (a signal generated by voice like 1, 2, san, etc. instead of the dial signal 1, 2, 9, 0) is identified and converted into numbers, and the mobile phone It has AI (artificial intelligence) functions such as sending data back to It usually refers to a switch housed in a local telephone exchange, but it can also refer to a spatially spread area such as telephones and subscriber lines controlled by the station, or the hardware itself that realizes the telephone exchange function. use

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

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 also used as a synonym for fixed-line telephones that also manage subordinate fixed-line telephones. 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.

2nd type exchange (KTC-n) A 1st type exchange located above multiple 1st type exchanges and 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 covers an area that is a collection of multiple subscriber areas, and refers to the area with a spatial bottom controlled by the station and the hardware itself that realizes the telephone exchange function. Also used when meaning. 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-n.

In addition, exchanges managed by (or subordinate to) type 2 exchanges,
When referring to a telephone set, etc., it includes a first type exchange connected to a second type exchange through a trunk 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. .

Main construction machine (KTC-I) A second type communication machine located above multiple type 2 switchboards and 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. Hardware that realizes areas managed by Type 2 exchanges that include areas that are roughly grouped into prefectures, areas with spatial bottoms controlled by Type 3 exchanges, and telephone exchange functions. It is also used to mean the same thing. In the NTT telephone network, it refers to switching equipment housed in central offices located in cities (70 cities) surrounding the prefectural capital, and KTC-III
It may be abbreviated as.

Sato Saramatakamame (KTC-IV) It is located above multiple third-class exchanges and includes an area where several middle/secondary office areas are aggregated, and calls between the third-class exchanges under its own control, other than its own. In addition to relaying and exchanging functions for regular telephone calls, it also processes subscriber information (
It has functions such as accepting, changing, and deleting location registration) and making and receiving calls. It is also used to refer to an area with a spatial bottom dominated by a type 4 exchange or 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. N.T.
In the T telephone network, it refers to the exchange housed in the central office;
It may be abbreviated as TC-IV.

In our country, the NTT network has Tokyo, 2 Nagoya, and 2 cities nationwide.

There are eight locations including Osaka.

】” LN Ryobaku (KTC-V) Located above multiple Type 4 exchanges, it has the relay and exchange functions for regular telephone 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 an area with a spatial bottom dominated 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 facing a mobile phone master device as a communication partner, but in places where radio wave propagation is poor or where a mobile phone master device is not installed nearby, a patent that is characterized by the ability to receive calls. 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 the radio waves transmitted from the first to fourth type radio base stations and the installation conditions are almost the same as those of the current paging radio base stations. However, the area managed by the nth class exchange is used as a service area for wide area calls and transmission of communication signals. In addition, the second
Type 1 or higher type wireless base stations may share facilities with type 1 wireless base stations.

Type 4 wireless base stations are also used to receive calls from mobile phones mounted in moving objects such as automobiles, trains, and airplanes that are moving at high speed. 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 and communication signals under the control of type n exchanges having interfaces with these base stations.

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.

Wireless channel (wireless line) This refers to the portion of the signal transmission path used in this system that uses wireless. The wireless channel is further divided into a control channel (control line) and a speech channel (speech line). Furthermore, when both of these are used together on the same channel (line), they are simply referred to as a wireless channel (wireless line).

In the present invention, as an example of a system used for explanation, a case having a control channel and a speech channel is shown, but the present invention is similarly applicable to a system in which the control channel is eliminated and all speech channels are used. In that case, the description of the control channel is replaced with the call channel, the transition to the call channel is replaced with the use of the own call channel, and if there are multiple call channels, a function that performs a circular search for any of them and captures an unused channel. All you have to do is have it.

Control channel (control line) A mobile phone that communicates with a mobile phone before the user starts a call (or after the end of the call) in order to register the location and make/receive calls from the mobile phone. A signal communicated between a telephone master device or a first type wireless base station for wide area calling of a mobile phone is called a control signal, and this transmission path is called a control channel (control line).

In the present invention, the control channel mainly refers to the wireless system, but it can also be used between the mobile phone master device and the i-th type exchange, which uses the wired system as the main transmission path, and between the j-th type exchange and the j-th type exchange (i = 1,2゜31'---'n, J = t
A transmission path for control signals, such as between mobile phone wide area calling first type radio base stations that exchange control signals with the Nth type exchange (I2131--n) or the nth type exchange, is also called a control channel.

Further, depending on the case, the same transmission path may be shared with the communication channel defined below, or may be used in a time-sharing manner.

The control channel through which the control signal transmitted to the telephone network side (more precisely, looking at the N-th type exchange) is called the uplink control channel when viewed from the mobile phone, and the control channel in the opposite direction is called the downlink control channel. Control signals transmitted from the mobile phone master device and the mobile phone may be transmitted all the time or only when necessary.

Transmission channel (communication line) refers to the transmission path through which the user's actual call signals (including image data signals, etc. in the case of e-media) are transmitted when making and receiving calls from a mobile phone. In the present invention, the communication channel (speech line) using a wireless transmission path is mainly between the mobile phone and the mobile phone master device, but the control B channel transmitted from the mobile phone wide area call first type wireless base station is used as the communication channel. It may be shared and used as In addition, mobile phone master equipment that uses wired systems as the main transmission path,
between type i exchanges, as well as between type i exchanges and type i exchanges (i
=1.2.3-n, j=1.2. -...+n) and communication with a computer, etc. used in the mobile phone system in certification mode also uses the communication channel.

From the mobile phone's point of view, the call signal sent to the telephone network side (to be more precise, looking at the class N exchange) goes up the call channel (call line), and in the opposite direction goes down the call channel (call line). ).

Subscriber information storage unit Types 1 to 5 of each hierarchy A function possessed within the exchange that stores various information regarding mobile phone users (incoming and outgoing calls 9 location registration 2) with the subscriber information storage unit of the upper or lower exchange. Transmission/reception, storage, and reading of information such as billing information and special information such as 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: An area with a radius of approximately 25 m where a mobile phone is permanently installed (means an area with a radius of approximately 25 meters where it can communicate with a mobile phone parent device that has a parent-child relationship at the location. In Figure 8 (a), the shaded circle indicates the mobile phone PID.
, indicating the home area of . 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 charged to the mobile phone 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.

Roam area within the same PBX The same PBX that accommodates the home area of the 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(a) is the roam area within the same PBX.

When using a mobile phone in an area other than the home area that is equivalent to the local telephone office where the first class ROHM area landline phone is accommodated (more precisely, the area occupied by the terminal housed in the first class exchange) area. The area indicated by the broken line in FIG. 8(a) indicates the first type roam area.

-g 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-n roam area.

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

Type 3 ROHM Area An area where a mobile phone is used in an area managed by a Type 3 exchange other than the Type 2 ROHM area.

It is sometimes referred to as the KTC-III inner circle area.

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

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

It is sometimes written as KT C-IV circle area.

The area surrounded by the broken line in FIG. 8(d) indicates the fourth type roam area. If a vehicle, aircraft, ship, etc. is on board and registers its location, it will be considered to be in a Type 4 Roam Area.

Type 5 ROHM Area An area where a mobile phone is used in an area other than the Type 4 ROHM area managed by a Type 5 exchange. 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 connection device) is used as a wireless device that communicates with a mobile phone system mobile phone in cordless telephone mode.

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.

Additionally, this mode is subdivided into the following three modes.

Residence 1 is a W-mode I piece. 1. A mobile phone main unit is installed inside or on an external wall of a private residence, mainly in a residential area in a city or a rural area, and there is a wireless link between this and nearby mobile phones. Suitable when the call traffic is usually not very large and the area density is uniform.The transmission of control signals from the mobile phone master device is limited to only when necessary, and is always performed at predetermined times. Only the receiver is operating (on standby) on the control channel assigned to it.However, even in residential areas, certain mobile phone master devices may temporarily stop working (standby) when there is a lot of call traffic or when an accident or disaster occurs. Abnormal call traffic may occur, and in response to this, the system is configured so that it is possible to temporarily shift to the business district mode mobile phone system described later.

Continuous Location Registration - Mobile Phone in Request Mode This is a mode in which a mobile phone sends out location registration request signals continuously or at intervals according to a certain rule. Use this when carrying a mobile phone in a mobile phone service area in residential area mode, when you want to notify KTC-I of your current location, or when you want to reliably receive incoming calls.

Mobile phone in business'-mode Takefu is located in urban business districts, downtown areas, event venues, large markets, large-scale business offices, and other places where people are concentrated, and in areas where call traffic is large and subject to large fluctuations, inside and outside of each building. This also refers to the case where a mobile phone master device is installed in a public facility, such as a utility pole or the wall of a public building, and a wireless line is established between this and nearby mobile phones.

Control signals from the mobile phone parent device are constantly being sent out.
By capturing this information, a mobile phone can register its location and make and receive calls. In some cases, the number of talkable channels of the mobile phone master device is one, but in some cases, a plurality of channels can be talkable at the same time at the same location depending on call traffic.

However, depending on the type of business district, there are areas where traffic drops significantly late at night, on festival days, etc. In such cases, the system is configured so that it is possible to shift to the above-mentioned residential area mode mobile phone system.

By using the current pager 1 paging radio wave as a downlink control channel for a Lt''' type mobile phone in pager mode, it notifies the mobile phone that there is an incoming call, and in some cases sends information addressed to the mobile phone to the paging radio wave. This refers to the case of sending.

Self! This refers to cases in which a cell phone-type cell phone in the car-den mode is brought into a car that is subscribed to the current car phone system, and communication is performed by connecting it to various equipment used in the car phone.

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.

Mobile phone in aircraft phone mode Each of the above four mobile phone modes uses a part of the radio telephone equipment installed in each mobile body to enable communication from the mobile phone of the present invention. It is called. Of course, this assumes that the current equipment has had its functions changed or added.

A mobile phone type mobile phone in wide area call mode is a mobile phone wide area call pipe n types (n = 1.2.
3.4 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 system mobile phone in proof (p-sound 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 method realizes a communication path setting method for mobile phone systems.

3.5 (Structure and operation of the invention) 3.5.1 Functions and characteristics of each main part (device) constituting the present invention This shows the configuration when applied inside a building.

The first type exchange (KT'C-1) is shown on the lower left side of Figure 3(a).
), which 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, Like NTT cordless phones, it operates in the 250/400MHz band.

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 case of absence, and a one-touch, etc. when making a call. 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 method, 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 (SIDυ), Considering the amount of traffic, there is a small possibility that the opposite mobile phone master device is communicating with another (third party) mobile phone, but it does occur with a certain probability.
There is no problem if there are two or more call channels, but in the introduction period, there may be only one call channel, and in this case, the display 10 of the fixed telephone
Displays that the call cannot be made. This is because when the mobile phone master unit is in use, a busy signal is sent from the subscriber line interface circuit in the mobile phone master unit shown in Figure 3(a) (so this signal is sent to the signal receiving unit of the landline telephone). 2 and displays it on the display section 10 according to instructions from the control section.

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 FIG. transmitted to the telephone.

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, mobile phone users can change the location from 20 to 25I11
If the mobile phone moves to a certain extent, a new communication path will be set up with the new mobile phone master device installed there, and the communication 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- 7, after a certain period of time, a call disconnection signal (end signal) is sent to the mobile phone to end the call.

Next, the mobile phone master device will be explained. The left side of FIG. 4(b) shows the internal configuration of the device. The device is connected to the subscriber line and fixed telephone set 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 "synthesizer oscillator" 1-4 to receive the desired signal. call channel
used to capture.

In addition, the timer 1-7 shown in FIG. Used to create timing for sending requests. Additionally, as the mobile phone user moves from place to place during a call, the mutual distance between the mobile phone and the mobile phone's parent device increases.
When the input electric field value to the mobile phone decreases and deterioration of call quality is recognized (this detection is performed by the electric field level determination section 1-9), a channel switching request (or disconnection) signal is sent from the control signal generation section 1-6. It has a function that sends the information to the mobile phone to search for the nearest new mobile phone parent device.

Furthermore, a function of changing the mode of the control signal sent from the mobile phone master device will be explained. The control mode switching section in FIG. 4(b) shows a circuit that executes this switching, and changes from the necessary transmission mode to the constant transmission mode according to instructions from the call traffic monitor section of the first type exchange (see FIG. 5(a)). or vice versa. For example, SWI of 1-10
If the mode is set to the transmission mode when downlink control signals are required, it is possible to change to the constant transmission mode by switching SW to 2. As already explained in the definition, when installed in a residential area (inside a house), the "on-demand" transmission mode is the normal mode, whereas when installed in a business district, the always-on transmission mode is the normal mode. In addition, the equivalent normal situation is that a call traffic amount measurement unit is built into the mobile phone master device (Fig. 4 (b) l-11) and is operated to operate 5WI-10 of Fig. 4 (b). There are cases where it is done.

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=1.2+3.4 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 unit will be explained. First, when the power of the mobile phone is turned on, it is determined that the mobile phone is in an area where the normal residential mode mobile phone system is applicable, and location registration is performed in the following order. That is, a predetermined control channel (# in Table 1)
1) is used to control the transmission frequency synthesizer so that the location registration request signal can be sent. At the same time, the receiving frequency synthesizer is controlled and the mobile phone master device
A downlink control channel sent via a predetermined control channel is captured. If this fails,
It determines that you are in an area where the business district mode mobile phone system is applicable, and begins sweeping to capture the downlink control channel. In many cases, this is successful and location registration is performed. If this also fails, it is determined that the mobile phone is in a dead zone, and the mobile phone makes the aforementioned wide area call and captures the control signal from the n-type radio base station. However, even if this acquisition is successful or unsuccessful, the normal state of switching reception by temporally circulating the downlink control channel of the wide area paging type I base station and the downlink control channel of the mobile phone master device will continue. let Furthermore, if a calling signal included in a downlink control signal for wide area calling is received, a ringing tone is sounded. 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 controller also provides instructions to the transmit frequency synthesizer to enable generation of a defined call (or control) frequency, as well as to the roam area call information storage unit and self-I
A control unit controls the D (PID) storage unit.

If the area where the mobile phone is used is limited to a business district, the transmission and reception of control signals immediately after the power is turned on may be made to operate in the business district mode immediately instead of starting from the residential district mode as described above, or It is possible to configure the software to operate in residential area mode only when failure occurs.

Furthermore, it may be appropriate for the user to have the phone stand by in wide area call mode while not allowing location registration in cordless phone mode. These are also technically easy.

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.

The continuous location registration request signal unit and timer shown in FIG. 4(a) are also used when the mobile phone sends out a location registration request signal at regular intervals.

In the residential area mode mobile phone system, downlink control signals from the mobile phone master device are not sent all the time, but only when necessary. Therefore, even if a moving mobile phone moves from the communicable zone of a mobile phone master device to the communicable zone of an adjacent mobile phone master device, the location registration will not be changed unless a call is made or a location registration request signal is sent. will not take place and therefore the incoming call will not be made in cordless telephone mode. In order to avoid this, the above-mentioned function is provided to enable the mobile phone to send out a location registration request signal continuously or at regular intervals (not necessarily at regular intervals and may be random).

Then switch the mode change switch (fourth switch) on the mobile phone.
(a) SW 3 ) is provided, and has a function of switching between the continuous location registration request mode and the necessary transmission mode.

Even if the mobile phone is set to continuous location registration request mode, if it enters the application area of the mobile phone system in business district mode, it will automatically start continuously after capturing the downlink Ha signal sent from the parent device. Transmission is stopped, and the uplink control signal sent from the mobile phone is switched to transmission mode when necessary.

However, it is also possible to maintain the VIP-PID in the constant transmission mode.

The continuous location registration request mode is suitable for cases where the user wants to know the current location of a walking doctor, insurance agent, etc. in an office or the like, or when the user wants to reliably receive incoming calls while walking.

However, if the mobile phone master device can talk on two or more channels at the same time, the above explanation is unnecessary because IC'H among them is assigned to the dedicated CH 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 communication using the mobile telephone system of the present invention, which will be described later, and is convenient because it can be used to display a lot number when you get lost.

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 master device, landline phone, and mobile phone have been described in detail above, and finally, as a summary, the basic functions that make these into the system of 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).

Connection to a 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 a mobile telephone.

1ii) Each mobile phone is given a PID (self-identification number) that is different from other TL band devices or other system terminals, and when a call is made or a request is received from the mobile phone master device, the Sends own PH) signal.

(PID is the PID of the mobile phone) iv) When a call is made in a location other than the home area, the roam area 5I sent from the mobile phone parent device facing the other side of the call.
Store D (terminal identification number) 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 signal using the transmission control channel of the cordless phone 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 subscriber information storage unit installed in the first to fifth type exchanges, which is one of the features of the present invention, will be explained. FIG. 5(a) shows the stratified structure of the first to fifth type exchanges. In other words, Type 1 exchanges are mobile phones and fixed-line telephones, as stated in the definition of the term.

A subscriber information storage unit MEM is installed for managing general telephones and the like. A type 2 exchange has multiple
It is connected to the subscriber exchange through a transmission line as shown in the figure, and is also provided with a subscriber information storage unit MEM. From now on, MEMs will be installed in higher-level exchanges as shown in the diagram, and the subscriber information storage units installed at each level will communicate with each other for mobile phone location registration requests, billing information, etc. as described later. It has a distributed storage function, which is a feature of the present invention.

3.5.2 Constituent principle of the present invention and its validity In this section, the method of arranging the subscriber information storage units MEM distributed in the exchanges of each hierarchy is compared to the centralized arrangement method of the prior art. We will discuss its superiority in comparison with PrD, and explain later how to assign personal identification information PrD.

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

3, 5.2-1 (Function of the storage unit for subscriber information (information such as location registration 1 billing by PID) installed in each hierarchical exchange) j) From a mobile phone via a parent device, PBX, etc. It stores the received subscriber information and transfers the information to the upper station or lower station as necessary.

il) When the exchange receives new subscriber information from the mobile phone due to movement 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. transfer new subscriber information, etc.

City) If subscriber information like the following ■ and ■ is stored in advance on a mobile phone, even if a location registration request signal is received from the mobile phone, it will not be registered based on the pre-stored subscriber information. The mobile phone performs location registration, call control, etc.

■My 1st standing cross ■Distorted 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.

■Waterfall ■Hoshiashi Reception 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 necessary parts of this information to a third party, vui) 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; Although it is obtained from a seed exchange machine,
Send this to the first type exchange subscriber information storage unit that controls the home area of the mobile phone via another exchange, etc.; 15.2-2 (Function of mobile phone master device subscriber information storage unit) i) Mobile phone master device (SID, ) of the mobile phone that captured the downlink control signal and requested location registration.
While storing rD in the PID signal storage section within the own device,
The mobile phone is currently SID, compared to the opposite fixed phone and KTC-I.

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's parent device moves away due to walking, the method 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.

1ii) During parent-child communication, the PID information of the parent/nucleus (mobile phone) as well as the start and end times of the call are notified to the subscriber information storage section of the first type exchange.

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 KTC-1, 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.

1ii) When a mobile phone registers its location in the ROHM area, if the function has been set in advance, this information can be sent to KTC-
It is received and stored from 1-1.

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.

ii) Storing 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. Before that, the radio channel control method used in the present invention will be explained in detail.

The control system for the mobile phone master device and the mobile phone Q&A radio line applied to the mobile phone system of the present invention usually includes a plurality of control channels (although there are cases where there is only one channel in residential areas).
It has the ability to control incoming and outgoing calls on multiple call channels. However, the control channel is used for location registration from the mobile phone and special signals (for example, call stop signals) to the mobile phone. However, the present invention can also be applied to a system that does not separate the control channel and the speech channel as described above. In that case, the same channel is first used for the control function for the operation of making and receiving calls, and then used as the speech channel. If the system has a plurality of wireless lines, it may be necessary to provide a function to periodically search these lines and identify unused wireless lines.

Now, how to arrange control channels in cordless telephone mode, that is, how to create a system in which a large number of mobile phones can make and receive calls independently without interference when a large number of mobile phone master units are installed within a service area. explain. First, an example of a system in a residential area, that is, a control method for a mobile phone in residential area mode will be described. In this case, it is normal for each mobile phone master device to send control signals through the downlink control channel only when necessary.

First, when the power of the mobile phone master device 5ID is turned on, this is detected by the nearby mobile phone PID.
, etc., the downlink control signal is transmitted using a predetermined control channel (for example, number 1). This signal includes the SID, channel number, etc., and the signal with the same content continues to be transmitted over and over again. At the same time, the signal receiving circuit of the upstream channel of the control channel (number 1) is operated to wait for a location registration signal from a nearby mobile phone.

In this case, if a mobile phone master device is installed nearby and the power is turned on at the same time, interference will occur because the usage fee '4HCH is the same, but the probability of this happening is extremely small.

The specific numerical values are as follows. The number of control channels is set to 1, and if there is a signal collision, that is, when adjacent mobile phone master devices receive location registration request signals at the same time, the signal will not be transmitted well to the other party due to interference, but the probability of this is set to 3.
%, control line exclusive time 10 seconds, busy hour concentration rate 1/1
0. Assuming that the number of repetition zones is 25 (that is, assuming that all radio waves in the surrounding 24 zones are interfered with), the number N of mobile phone master devices (for each zone) that can be accommodated in the system is given by the following equation.

Here, a(1,0,03) indicates the amount of calls that can be carried by Erlang.

In other words, it was shown that up to about four machines could be accommodated in a place where one machine would usually be sufficient. It can be seen that this value meets the necessary conditions for a mobile phone system in residential area mode when compared with the call traffic calculation example for Tokyo as described later. In actual use, it is considered that the mobile phone master device is used with the power always on, so the above value can be considered as a condition for new installation. Therefore, the exclusive time for the control channel was set to 10 seconds at the time of new installation, and if the power is still on, the exclusive time is technically less than 1 second for calls to and from the opposite mobile phone, etc. control objectives can be achieved.

Next, the number of mobile phones that can be accommodated is determined from the viewpoint of the control capability of the mobile phone master device operating in the residential area mode. As above, as a design condition, the control signal failure rate (due to interference) is 3%.
, the exclusive time of the control line is 0.5 seconds, the busiest hour concentration rate is 1/10, the number of calls, etc., is controlled 10 times/day, and the number of repetition zones is 25.The number of mobile phones that can be accommodated in the parent device, n, is calculated by the following formula. Given.

In other words, it was shown that about 9 vehicles could be accommodated. In the case of one-sided residential land mode, one mobile phone master device is installed in each house, and it is used by the entire family living in that house, but the number of families is considered to be less than 4 Å, and it is also used on outdoor roads etc. Even if we consider that there are four third-party users, the above figure exceeds this number, indicating that there is no problem with the system. However, mobile phones in continuous location registration request mode were excluded from calculations. (Actually, even in residential areas, other master devices are installed in public places such as telephone poles, so the above conditions are further relaxed.) Furthermore, are there any problems with call traffic regarding mobile phone systems in residential area mode? It is necessary to consider whether or not. The design conditions in this case are: call loss rate 0.03%, number of call channels 502, number of calls 10 times/day.

3 minutes/time, busy hour concentration rate 1/10, number of repetition zones 2
5, the number m of mobile phones that can be accommodated in the parent device is given by the following equation.

In other words, it is shown that approximately 34 cars can be accommodated, and the Tokyo 2
Comparing the example traffic calculations within the three wards, it can be seen that there is sufficient margin.

On the other hand, a description will be given of communication with a mobile phone existing in the vicinity (within an area where radio waves are transmitted well and communication is possible) of the mobile phone master device that is powered on as described above. There are two possible states of nearby mobile phones:

■ If the mobile phone has been in standby mode (power on) before the power was turned on ■ If the mobile phone has entered standby mode after the mobile phone has started operating (power on) I will explain the state in ■ first. .

In this case, the mobile phone PID is a state in which the downlink control channel of the mobile phone master device and the downlink control channel of the mobile phone wide area paging type i base station are cyclically switched in time to capture (receive) which channel. The length of the control signal from the former parent device is longer than the switching interval, and the PID can always receive this control signal well. Furthermore, in the case of a mobile phone in the continuous location registration request mode, the signal sent from the mobile phone is received by the mobile phone master device, making it possible to perform a more reliable location registration operation.

In this way, the PID receives the downlink control signal from the SID, inspects the contents, and then stores the SID in the storage section of its own device.

etc., and simultaneously sends a location registration request signal to the SID. The subsequent operations follow the process described later to complete the location registration. After this, it is possible to send out a control signal only when a call is made from the PID or when a call is received to the PID, thereby achieving the respective objectives.

In the mobile phone system in the residential area mode described above, it has been found that one control channel is sufficient for the control signal traffic for outgoing and incoming calls. Table 1 is an example showing the number of various control channels including this.

However, the reason why two channels are assigned as control channels in residential area mode is to cope with cases where this system enters an expansion period and call traffic increases due to the introduction of new services, or when the system is divided. One channel would be sufficient. The mobile phone system in the residential area mode is superior to the mobile phone system in the business area mode in terms of effective use of frequencies and power saving in transmission power. However, if this system is applied to people who are mainly mobile, such as doctors or salespeople making house calls, and who want to receive services not only by making calls but also by checking their current location, it is necessary to take the initiative on the mobile phone side. It is necessary to Therefore, there is a method of transmitting a location registration signal from the mobile phone at certain intervals by setting the mobile phone in continuous location registration request mode as shown in Table 1. Number and Functional Examples of Control Channels for Fixed Radio Station Transmission in Mobile Telephone System.

That is, the location registration continuous request signal section and the timer shown in FIG. uplink control channel, e.g. CH
The purpose can be achieved by a method of transmitting a location registration signal using I.

Next, when mobile phone PID2 in the roam area enters the communication area with mobile phone master device SID (
In the case of ■), explain. If you turn on the power of the P'ID near the SID, the operation will be almost the same as that described when turning on the power of the PID, so we will omit it. Suppose you come in. PID2 normally uses the uplink control channel only when necessary, and SID also uses the downlink control channel only when necessary, so if things continue as they are, PID
It is possible to make a call from , (in this case, location registration is performed first and then a call signal is sent), but incoming calls can only be made in wide area call mode. To avoid this, as mentioned above, operate the mobile phone as a mobile phone in continuous location registration request mode, and use the control channel at certain time intervals.
A location registration request signal is issued using number 1, and upon receiving this, the mobile phone master device inspects the contents of this signal, and if it is a PTDz that is not stored in its own memory, it is stored and KTC-1 It is necessary to send out a location registration signal for SID l+PIDz.

Note that even in residential areas, call traffic may be constantly high in a specific area or with respect to a specific mobile phone master device. For example, call traffic within a supermarket or private store in a residential area. In particular, when a mobile phone is used as a credit card terminal, communication traffic becomes large. In order to deal with such a case, as shown in 1-11 in Figure 4, the mobile phone master device is equipped with a circuit that measures the amount of call traffic circulating within the device itself, and the device is equipped with a circuit that measures the amount of call traffic flowing within the device itself. If the amount is exceeded, switch SWt-10
2, and has a function of switching the control signal sent from the mobile phone parent device from sending it when necessary to always sending it. This makes it possible to cope with increased traffic. Note that when the amount of call traffic falls below a predetermined value, the control signal transmission mode can be switched from always to transmission when necessary, thereby making it possible to effectively utilize frequencies and save power.

Furthermore, we will explain how to transition the mobile phone system from residential area mode to business area mode over a wide area.

Even in residential areas where there is usually little call traffic and the traffic density is almost uniform across the entire service area, call traffic may increase abnormally in one area due to an unexpected incident, gathering, event, etc. . MON included in KTC-1 shown in Figure 5(a)
monitors the amount of call traffic in the area managed by its own exchange, and if this amount exceeds a certain value, changes the control signal transmission mode in the corresponding service area. In this case, the mode is shifted from the residential area mode to the business area mode. That is, the control signal sent from the mobile phone master device is switched from being sent when necessary to always being sent.

Therefore, a switching signal is sent to all mobile phone master devices in the corresponding area. The control mode switching unit shown in FIG. 4(b) has a function of switching from state 1 (residential area mode) to state B2 (business area mode) in response to a switching signal from KTC-I. This state change is transmitted to the control unit of the mobile phone master device, and the method of transmitting the downlink control signal is changed from when necessary to at any time.

At the time of this change, the control channel is also changed in order to prevent interference with downlink control signals from nearby mobile phone master devices (control channels sent from each mobile phone master device are As a result, the mobile phone system in the business district mode, which will be explained in detail below, becomes possible, and it becomes possible to cope with an increase in call traffic.

Next, a wireless line control method used in the business district mode mobile phone system will be explained. Control in this mode
The usage of IIcH is different from the above-described residential area mode in that the downlink control channel from each mobile phone master device is constantly transmitting control signals.

Here, the term "constantly" includes a case where a control signal is sent for 1 second at regular intervals (although it may be random), for example, every 10 seconds. Providing a 9-second transmission pause time like in this example is effective in saving transmitter power and reducing interference, but the system effect is exactly the same as constant transmission, so it can be included in the former category. That's why. In this case, there are the following three methods for assigning a control channel to the mobile phone master device. However, the number of channels that can be transmitted and received by the mobile phone parent device is 1, but an example of a plurality of channels will be described later.

■ A mobile phone master device is equipped with a function that allows it to search downlink control channels transmitted from a large number of nearby master devices, and select a control channel that does not cause interference to others from its own device. let them use it.

■ Radio control device (RC) (Figure 5 (d) or ((to)
), and have it specify the downlink control channel emitted from the subordinate multiple cell phone master device (SID). However, although the RC has the function of managing control channels and switching the call path when a mobile phone moves during a call and changes the mobile phone parent device with which it communicates, Management such as channel designation is not allowed.

■ Similar to ■, an RC is installed, and the RC is also made to manage the communication channels, which was not done in ■.

First, I will explain from ■. The installation location of the mobile phone master device within the service area is defined as the center of a uniform regular hexagon as shown in Fig. ))do. In reality, houses are different in size, and the installation location of the parent device also varies depending on the house, so this is not the case, but if it is not uniform, the number of control channels can be increased to prevent interference, so even if we assume like this. This does not limit the effects of the present invention. Further, the numbers in the figure indicate each hexagonal zone. Well, first zone 1
It is assumed that the power of the mobile phone master devices installed in each of the cell phones 25 to 25 is in an off state, that is, no radio waves are emitted. Further, it is assumed that the number of control channels is 25, and that the power of the mobile phone master device in zone 13 is turned on at the 0th time point. Then, a control signal is sent from this parent device using a certain control channel (downlink), and the control channel number may be any number from 1 to 25. That is, in this case, prior to emitting radio waves, the control channel number 1 to 25 is swept and the receiver in the device is activated to investigate whether or not radio waves are being emitted. It is discovered that the control CH is not used anywhere in the zone. Therefore, it is recognized that interference will not occur no matter which CH is used, but the software in the device is activated to set the control channel number used in zone 13 to No. for convenience.

13 and assume that this is used.

Next, assume that the mobile phone master device in zone 14 is powered on. Then, as explained above, the mobile phone master device installed in this zone will emit radio waves using a certain control channel, but prior to this, the receiver in the device is activated to transmit control channels 1 to 25. Sweep to find out which channel is emitting radio waves. As a result, it is recognized that CH3S is being used, so a function is provided to use control CHs other than this.

For convenience, it is assumed that the control channel number used in this zone 14 is k14.

Zone 1 below, 2.3. --------12.15.1
6. Assume that the mobile phone master devices installed at -, -, and -24 degrees and 25 degrees are turned on one after another. Then, as explained above, before emitting radio waves from the mobile phone master equipment installed in each of these zones, the receiver inside the equipment is activated to sweep control channels 1 to 25 and determine which channel the radio waves are being emitted from. Investigate whether or not As a result, it is recognized that the control channels numbered the same as the mortar zone number are unused, and control signals are sent out using the control channels numbered the same as the own zone number.

Zones 1 to 25 used in the above explanation are a small part of the total service area as shown in FIG. 5(C), but zones 26 to 50 exist to the right of these.

The control CH number used in these zones is, for example, kl in zone 26, Nα in zone 27, Nα in zone 2.28, etc.
The control CH number shown by the same number as 3 and the remaining number after subtracting 25 from the zone number will be used.

Then system Tl5CH number Na 1 is zone 1 and zone 2
It will be used in 6. However, there is a considerable physical distance between Zone 1 and Zone 26, and the control signals transmitted from the parent device are attenuated to the extent that they do not interfere with each other's control signals due to radio wave propagation characteristics (by the way, NTT
Most car phones have a configuration of about 12 zones). Therefore, no matter how wide the service area is, if 25 channels are prepared as control channels, even if control signals are issued from each mobile phone master device in the entire service area, they can be used without mutual interference and the operation of the system is guaranteed. become.

In the above assumption, the mutual relationships among the mobile phone master devices installed within the service area are uniform as shown in FIG. 5(i), but a case where they are non-uniform will now be described. In this case, it is possible to deal with this by increasing the number of control C)Is. That is, if the relative distance between mobile phone master devices using the same control channel is smaller than that shown in FIG. 5(i), another control channel, for example Nα26, may be provided. In reality, it is conceivable that an even larger number of preliminary control channels may be required.

Table 1 shows an example of the number of control channels and the number of speech channels used in the mobile telephone system according to the present invention. Among these, the control channels used in the above explanation are for the cordless telephone mode and provide 30 channels from 3rd to 32nd.

Note that in the above explanation, the control channel number used in each zone is the same as the own zone number, but this assumption is not necessarily necessary, and any channel number can be selected as long as it does not cause interference. I won't give you anything.

Further, even if there is no interference at a certain point in time, a control channel in use may be interfered with due to radio wave propagation conditions, external radio waves, or the like. The mobile phone packer and mobile phone master device of the present invention have a function of checking for interference and, if interference is detected, switching to another channel. Therefore, for example, if the control channel being used in zone 14 is interfered with, an unused channel, for example Nα26, is selected from other control channels and used.

The same thing is true for communication channels; a monitoring circuit built into the receiving unit constantly monitors the transmission quality of the communication channel specified for a certain mobile phone, and if interference occurs, has the ability to immediately switch to and assign another call channel.

Next, the operation for location registration from a mobile phone will be explained. In FIG. 5(i), the mobile phone master device (
It is assumed that a mobile phone PID, which has this zone as its home area, is turned on. Then, the receiving frequency synthesizer in the mobile phone described in FIG. 4(a) starts operating and automatically starts sweeping the control channels Nα3 to Nα32. As a result, the downlink control signal flowing on control channel number 1 is captured. This downlink control signal includes SID, control C
Contains H number etc. Mobile phone P that received this
In IDI, a location registration request signal is sent using the uplink control CH corresponding to the control channel number l. This signal includes PID, channel number, etc. The parent device that receives this signal stores the P
ID and signal are memorized, and the PI is sent to the first type exchange.
Report that there was a location registration request from D. This signal has PID, +3 LD.

It is included. Upon receiving this signal, KTC-I-1 memorizes in its own subscriber information storage unit's location registration information storage unit that the location of PID+ has been registered with SID, and at the same time completes location registration with SID. report the matter. Upon receiving this report, the SID inspects the signal contents and uses a downlink control signal to notify the PID that destination location registration has been completed.

With the above operations, the location registration of PIDI to SID+ is completely completed. The above operation is illustrated in FIG. 11(a).

Next, we will explain how to make a call from a mobile phone whose location has been registered. When the mobile phone PID goes off the hook, it sends a call request signal to the opposing mobile phone master device using the uplink control channel corresponding to the control channel number being captured. This signal includes PID, signal,
After investigating the SID and PID of the mobile phone master device that received this, it notifies the mobile phone of the call channel number that is currently not in use in the vicinity and requests it to send a dial signal on this channel (depending on the system, the main device It is also possible to continue to use the control channel instead of the speech channel (as in the example below). The mobile phone master device operates the synthesizer in its own device and constantly calls C that are not being used nearby.
It has a function that makes it possible to memorize H. That is, the cordless mode call CH33~150.151~ in Table 1
200 (7) If the unused CH is 51.151, it will be 51 for calls only and 151 for data communication.
Assign. Therefore, upon receiving the downlink control signal specifying the CH, the mobile phone operates the synthesizer according to instructions from the control section, sets a channel to INα 51 or 151, and sends out a dial signal.

The calling operation proceeds as described below (see Fig. 7).
a)).

Note that the call CH designation explained above is No. 1 in Table 1.
It was a dedicated channel for calls from 51 to 200.

A case will be explained in which the call traffic becomes large and all of these call channels are in use. In this case, there is no channel that can be assigned as a communication channel, but there is a function to temporarily use a control channel as a communication CH. That is, P
If there is a call from ID, and the situation is as described above, PID will use control number C811 as it is as a communication channel.

Sends a command signal to. Upon receiving this command signal, the mobile telephone sets the control CH3I number as the call CH and sends out a dial signal, and the call operation as shown in FIG. 7(a) proceeds.

In addition, the number N of portable electric packing machines accommodated is determined from the control circuit processing capacity of the mobile phone system in the business district mode explained above. The numerical values of the specifications used in the calculation are the same as those for the residential area mode mentioned above (however, the call traffic is 40 times/day)
Using , N in this case can be found using the following equation.

That is, it is possible to accommodate 56 units in one zone.

However, since a different control channel is used in adjacent zones, it is assumed that there is no need to consider the number of repeated zones.

Next, since the number of mobile phones that can be accommodated in terms of call traffic processing capacity can be considered to be the same as that determined previously, it is determined that it is possible to realize the system model described below.

In addition, regarding mobile phone systems in business district mode, we will explain a wireless line control method for mobile phones in places where extremely large numbers of people gather, such as Tokyo Station and Osaka Station.

In the second case, even if the above-mentioned mobile phone system in the business district mode is applied, the call traffic is so large that calls cannot be carried out satisfactorily. The solution is to use small zones. In the above explanation, the service zone of one mobile phone master device is set to have a radius of 25 m, but if the transmission power of each mobile phone and mobile phone master unit is reduced and the service area is set to a radius of 10 m, for example (25/10).
2=6.25, that is, it becomes possible to process more than 6 times as much call traffic. Technically speaking, the transmission power of the parent device should be kept to 1mH of the standard 1710, for example, and the mobile phone should be equipped with a transmission power control function that works only in small zones that can be reduced to the same level as each parent using a downlink control signal. This is a well-known technique.

The second countermeasure is to install multiple mobile phone master devices within the same service zone. As a result, the traffic processing capacity increases by n times if n units are installed. However, since n control and communication channels are required, this method cannot be said to be very good, but it can be said to be an economical method. Therefore, a more effective method is detailed below.

Now, we will explain the method (2) of installing a radio system control device RC (see FIG. 5(d)) and having it specify downlink control channels emitted from a large number of mobile phone master devices (RC) under its control. However, it is assumed that the RC only has the function of managing the control channel and switching the channel while the mobile phone is talking. Furthermore, since the RC function is not available in the residential area mode, it is applied to the mobile phone system in the business area mode.

In this case, the RC allocates control channels to be used by subordinate SIDs according to certain rules, or actually measures the value of interference in advance while transmitting control signals from many parent devices, and then Since it can be utilized during CH allocation, it is possible to improve the frequency usage efficiency compared to the case described in (2).

FIG. 5(j) shows this example, in which the number of repetition zones is 12. That is, the same frequency can be reused for every 12 zones. However, in this case as well, it is better to have a spare channel in place to prevent interference, and to avoid increased system traffic, two mobile phone master units should be installed in each small zone. It is also possible to operate it.

In this case, the number of control channels is 12CHx 2 =24CH plus a spare channel.

If this method is adopted, there is no need to specifically design a new mobile phone parent device, and the parent device used in the residential area mode can be used as is. However, two control channels are used in one zone, which is not a good idea in terms of effective frequency utilization. Therefore, as shown in FIG. 5(2), it is also possible to provide one control channel within one zone and have this control channel control the use of a plurality of communication channels. As mentioned above, the number N of mobile phone master devices that can be accommodated in one zone from the viewpoint of control signal processing capacity is 4.45, so 4 to 5 are possible.

In this case as well, it is of course possible to divert the control channel transceiver to communication during traffic congestion (the control signal uses a signal outside the communication signal band).

This method (2) is thought to be frequently used during the expansion phase of the mobile phone system. That is, method (2) is suitable for use in areas with low call traffic, such as residential areas, because the system is a hour wheel, while method (2) is likely to be used in areas with high traffic, such as downtown areas and event venues. However, even in residential areas, if call traffic increases, ■ will be used.

Next, location registration and calling operations from the mobile phone are performed in the same manner as described above. Figure 5 (In odor, RC is KT
Although it is shown as being installed separately from C-1, it may also be installed in the same location as KTC-I. Alternatively, one location may be installed within the same area or village of an administrative division, and a plurality of these may be accommodated in KTC-I.

The control signal from the control Cl controller to the speech channel controller in the RC in FIG.

Finally, I will explain ■. FIG. 5(b) shows an embodiment of this method. This method shows a method in which the RC specifies not only the control CH but also the call CH. This method is effective in areas where call traffic is extremely high.

The line control of the mobile phone system in the residential area mode and business area mode has been described above. The system operation of the mobile phone system near the boundary between these two modes of mobile phone system will be described below.

It is assumed that all mobile phone owners are walking with their PID turned on near the boundary line between the two modes. In such a state, the mobile phone normally tries to grasp the downlink control channel, so it is considered to belong to the business district mode, but suppose that the mobile phone moves away from the business district and enters a residential area as a result of the transition. Then, the S/N of the control I channel that was known until now deteriorated.
When this value becomes less than a certain value, the determination is canceled and the search for another downlink control channel is started. However, in the above state, since there is no mobile phone master device that is constantly transmitting data as a downlink control channel, the mobile phone fails to grasp the signal. The mobile phone that has entered this state is judged to have moved to the residential area mode after a certain time period, and from then on the control channel assigned as the mobile phone system for the residential area mode is determined. (In Table 1, channel N
A location registration request signal is sent using the upstream channel α1).

When the nearest mobile phone master device in residential area mode receives this signal, it performs the same operation as the location registration of the mobile phone system in residential area mode as described above, and the location registration is completed. Thereafter, the mobile phone will operate in the residential mode. Further, if the mobile phone is initially set to the continuous location registration request mode, it returns to the initial state and resumes continuously transmitting the location registration request signal.

Conversely, a case will be explained in which a mobile phone in a residential area mode moves to a mobile phone system applicable area in a business area mode. In this case, if the mobile phone is in the continuous location registration request mode, the mobile phone is continuously transmitting its own PID using the uplink control channel of channel Nn 1 in Table 1,
Due to the movement of the mobile phone, it is no longer possible to obtain a response using the downlink channel of the control channel Nα1 from the opposite mobile phone master device in the residential area mode. In this state, after a certain timing, the mobile phone automatically stops continuous transmission for location registration, enters business district mode, and starts searching to acquire the downlink control channel being used. That is, the control channels N113 to N32 in the cordless telephone mode shown in Table 1 are searched cyclically, and as a result, it is possible to acquire the control channels, and a transition is made to the standby state on that channel.

Further, even if the mobile phone successfully captures the downlink control channel in the cordless telephone mode, if the mobile phone continues to move, the reception power of the downlink control channel will decrease, and the reception quality will also drop below a certain transmission quality standard. Then, this acquisition is canceled again and the search for acquisition of another downlink control channel is resumed. The following operations are identical to those described above (the same operations will be repeated).

The above is a case where the mobile phone is in the location registration continuous request mode, but a description will be given of a mobile phone in a general residential area mode.

In this case, even if you move to a service area that is in business district mode, the mobile phone will still be connected to channel Nα1 in Table 1.
continues to receive the downlink control signal.

Therefore, incoming calls cannot be carried out in the cordless telephone mode, and the wide area calling mode must be used. However, regarding making a call, the calling signal is sent on the upstream channel of control channel Na 1 in Table 1, but since there is no response from the nearest mobile phone master device, the vagina mobile phone switches to business district mode after a certain period of time. It has a function to automatically start acquiring the downlink control channel to be used.

Therefore, the subsequent operations will follow exactly the same transition as described above.

In order to be able to make and receive calls from other telephones at all times while carrying a mobile phone, which is one of the main devices of the present invention, while traveling around the country, it is necessary to know where the mobile phone is currently located.
Technically, it is necessary to constantly monitor and store which mobile phone master device it is possible to communicate with. The mobile phone master device and the 1st to 5th class exchange subscriber information storage unit (
MEM).

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

However, in the following explanation, for the sake of simplicity, it is assumed that the mobile phone system is in business district mode and that control signals are constantly flowing from the mobile phone master device using the downlink control CH. In residential area mode, this is not flowing, so in order to send a location registration signal from the mobile phone to the parent device, it is necessary to set the mobile phone to continuous location registration request mode, but the operation after that is the same as constant transmission.

i) Location registration in home area When the mobile phone is powered on in the home area, this registration operation is started. FIG. 11(a) shows the operation flow in this case. This will be explained below using FIG. 11(a). In the figure, when the power switch of the mobile phone PID+ is turned on, the downlink control CH of the mobile phone master device SID in the home area is captured, and the PID,
A location registration request signal is transmitted using the uplink control CH. The mobile phone master device SDI receives this and stores it in its own memory, and also sends the P to the first type exchange KTC-I-1.
ID, and sends out a location registration request signal. Upon receiving this, the subscriber information storage unit of KTC-I-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 of the home area. . When this is completed, a location registration completion signal addressed to the mobile phone parent device is sent. The SID that received this signal collates the PID in the signal, and sends a signal that the mobile phone PID and all destination locations have been registered. The PID that receives this inspects the signal content and stores the SID.

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

jj) Location Registration Method in Type 1 Roam Area The operational flow of location registration in Type 1 roam area will be explained using FIG. 11(b). In the same figure, mobile phone PI
When D is turned on, it sends a location registration request signal to the opposing mobile phone master device SID2 in the same way as described above. The SID that received this inspects the PID and signal and recognizes that it is a third party's mobile phone in the roaming area, not the opposite mobile phone (PIDz), and stores the PIDI in its own memory. together with KTC-1-1
Sends a destination location registration request signal. KTC that received this
-I-1 MEM uses SID for location registration.

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

Next, the position registration operation when walking and moving within a type 1 roam area while keeping the power switch on the mobile phone PID will be explained using FIG. 11(C).

In the figure, the mobile phone PID.

is captured as a descending @CH from S■Dt, but as the user walks, the input electric field value decreases and finally falls below a certain reference value. Then, the PID starts searching for another control channel acquisition based on the information from the noise level detector (see FIG. 4(a)).

As a result, it is found that the input electric field value of the downlink control CH transmitted from the mobile phone master device 5IDz satisfies a certain standard, and the 5ID stored in its own memory as a location registration
Change it to z and rewrite it as S ID. It also sends a location registration request signal to the SID. Mobile phone master device SID that received this signal.

Then, it stores the PID and sends a location registration request signal to KTC-1-1. The following operation is shown in Figure 11 (
Same as b).

ni) Location registration in Type 2 ROHM area Figure 11 (
The operation flow will be explained using mountains. In the same figure, the operation from turning on the power of the mobile phone PID to receiving a signal to KTC-1-2 is exactly the same as in FIG. 11 (°C) described above.

Now, when KTC-1-2 inspects the contents of the location registration signal, it recognizes that the PID is not a mobile phone managed by KTC-1-2, and stores it in its own location registration storage section, as well as PID. A location registration request signal is sent to KTC-II-1, which is managing D. KT who received this
In the MEM of C-11-1, the signal contents are stored in the white position registration storage unit for inspection, and the KTC-1 manages the PID.
For 1-1, PID is S managed by KTC-1-2.
Request to remember that the location is registered with the ID. Upon receiving this signal, KTC-1-1 inspects the signal content and stores it in its own location registration storage section.
-1, reports that the location registration has been completed. Upon receiving this signal, KTC-II-1 verifies its own location registration with the stored contents of its memory, and then sends a location registration completion signal addressed to KTC-1-2. The following operations follow the same process as shown in FIG. 11(C), and the location registration of PID 5ID4 is completed.

iv) Location registration in Type 3 ROHM area Figure 11 (
The operation flow will be explained using e). 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-11-3 is shown in Figure 11 (d
) is exactly the same as

Now, the location registration request signal sent to KTC-1-3 is inspected by the MEM of KTC-If-3 and stored. Further, as a result of the inspection, it is found that the PID is not a mobile phone managed by the KTC-m-3, so a location registration request signal is sent to the upper exchange KTC-III-1. KTC-m-1, which received this signal,
D recognizes that it is managed by its own exchange, and
Save to EM. It also sends a location registration request signal to KTC-11-1. The following operation follows the same process as shown in FIG. 11(d), and the location registration of the PID in the 5IDS is completed.

■) Location registration in Type 4 roam area Figure 11 (f
) shows the operation flow in this case. The same figure and Figure 11 (e
) is different only in that a type 4 exchange is involved; the other operations are exactly the same as in FIG. 11(e).

vi) Location registration in Type 5 roam area Figure 11 (
The odor indicates the operational flow in this case. The same figure and Figure 11 (f
) is different only in the presence of a type 5 exchange, and the other operations are exactly the same as in FIG. 11(f).

In addition, in the above explanation, KTC in FIG. 11(e)
-n-3, KTC-11-4 in Figure 11(2) and KTC-m-4, KTC-n in Figure 11(2)
-5, KTC-1 [1-5, and KTC-IV-5, it is not necessarily necessary to memorize the location registration information of the PI DI requesting location registration in the MEM installed in each of them. , even if omitted, the effects of the present invention will not be affected in any way. However, by storing location registration information in these exchanges, it seems redundant.

When a user is in a roaming area and there is an incoming call from the same type of roaming area, by simply searching the MEM of the exchange that manages the roaming area, a communication path between the two parties can be established without having to go to the higher-level exchange. This will result in benefits such as: Therefore, considering the current situation where the economic efficiency of MEMs is increasing, it is considered reasonable to store registration information in the MEMs of all exchanges involved in location registration.

Finally, regarding the operation flow when canceling (changing) location registration, as an example, the operation flow when a PID that has registered location in a Type 5 roam area changes location registration to home area will be explained below. .

vi) P whose location was registered in the 5th type ROHM area
Operation when ID changes location registration to 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 at various locations during the trip. This applies to cases where the mobile phone is used, turned off on the way home, brought back to Tokyo, and then turned on the power switch 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. This is as if the flow is completely opposite to the flow of location registration operation in the type 5 roam area shown in FIG. 11 (6). That is,
SID, , KTC-n-5 (n=1.2.3
1415) l KTC-n-1 (n=1, 2.3.4
．． 5) All PIDI location registrations in MEM are SID
? This is an action to change (delete) what is set to . In other words, in the storage unit of SID, PIDI changes the location registered in PID of the 5th ml roam area to the home area, and also sends PID to KTC-I-1.
The SID informs the SID that it is requesting location registration. KTC-1-1 searches for the MEM, changes its own MEM, and changes (deletes) the location registration for KTC-n-1.
request. Upon receiving this signal, KTC-11-1 erases the location registration information related to its own MEM's PID, and
It also requests KTC-I-1 to change (delete) the location registration. Hereinafter, the SID mentioned above.

All PIDI location registration information will be deleted from the MEMs of exchanges other than KTC-I-1.

The above explanation has clarified the location registration operation of the mobile phone, and as described above, in the mobile phone system according to the present invention, the location registration of the mobile phone is always performed. Furthermore, the location accuracy of this location registration is extremely accurate at 25 meters in the cordless telephone mode. Therefore, if you want to monitor the current location of insurance agents, salesmen, etc. using electronic bulletin boards in business offices, etc., you can give these people mobile phones and call them at the nearest Type 1 exchange (KTC-■).
This will become possible if you receive more location registration information. As described above, the present invention has wide application fields other than communications.

In order for the mobile phone type location registration according to the present invention to be effective, it is a prerequisite 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 119 for communication,
The church or medical center that receives this information can have the current location information of the mobile phone transferred from KTC-I and send an ambulance directly to the scene. This is currently used for elderly people.
In the case of an emergency, you are given something called an "emergency pendant" and when you pull the pendant at home etc., SO8 radio waves are emitted from the radio installed inside the pendant, and the signal received is sent to the emergency medical center and an ambulance is dispatched. has been put into practice, but the present invention is equivalent to a highly functional version that expands the service area nationwide. Similarly, if there is a fire in your area, you can make an emergency call by simply dialing 119 and saying "Fire" (again, it is not necessary to say it; a dial signal can also be used).
Unlike the current system, there is no need to provide detailed explanations of place names, lot numbers, and the state of nearby buildings when the user's mind is in turmoil. 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.

Additionally, when reporting from the scene of a crime or traffic accident, for example, by dialing 110 from a mobile phone, the police car command center can clearly recognize the current location of the mobile phone, allowing effective operations to be carried out. Become.

■Detection of the current location of elderly people with dementia As Japan's population ages, the elderly occupy an increasing area (
Nowadays, the increase in the number of elderly people suffering from dementia is becoming a social problem. In particular, elderly people who wander around indiscriminately on roads and parks day and night, away from the supervision of their family members, become a nuisance to the public and are more likely to be involved in traffic accidents. 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 arranging the current location of the mobile phone to TC-1, 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 a failure, the n+1-th type exchange takes over the storage. If the higher-level exchange is also unable to store data due to a failure, etc., it will be moved to an even higher-level exchange and finally the ME of the 5th type exchange.
Trying to remember M. If the MEM of the fifth-class exchange cannot be stored, location registration is performed in the mobile phone master device or fixed telephone (SIDI) 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.
Since the call is made from the exchange that manages the area where the mobile phone is actually located while adjusting the current location to D, the control signal will be interrupted and the call will be detoured, but this will not interfere with the call (it will be executed).

Now, with the above explanation, the nth type exchange (n=112°3.4
It has become clear how important the subscriber information storage unit installed in 5) and 5) plays. Therefore, below, we will calculate the traffic that uses this storage unit and the required memory amount, 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 according to the present invention is carried to any location across the country, and from there it is possible to make and receive calls to and from a telephone located at any location. Current location registration, which occurs when a phone moves, must be performed at all times to ensure the availability of calls at all times.Furthermore, even if this is performed, it is much more efficient and economical than conventional techniques, and is less expensive for users. We will explain in detail below that this is a highly rational method that follows the habits of people.

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 from where an individual is usually present, the more the frequency and exclusive time they spend will drastically decrease in inverse proportion to this (details can be found in the literature below). by).

In other words, for example, in the case of a businessman working at a business office, etc., many (
of your time at your desk (desk), and even if you are away from your 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 the people of other countries around the world), we believe that the distributed registration method of the present invention when carrying a mobile phone is the most consistent with user habits. It is judged as a thing.

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 in detail the daily behavior of the general public as described above, with reference to literature (National Travel Dynamics Survey Report, Office of the Prime Minister, 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 2) Table 2 Looking at the experience rate by type of trip and the average number of overnight trips by type of trip, pure tourism is 4.
5.9%, business trips 7.1%, homecoming trips 13.8%, and trips for housework/personal errands 9.1%. When pure tourism and combined tourism are combined, 53.3% travel overnight.

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, accounting for 4 of the total.
It accounts for 8.8%. Business trips were O and ISO times, return trips were 0.235 times, etc., and pure tourism and combined tourism were 1.030 times, accounting for 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 origin side, as shown in Table 3, 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%. Furthermore, the average number of days of overseas travel 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, the experience rate for day-trip tourism and recreation per household member was 32.4% in winter. The experience rate for “summer” is 43.
It is 6%. ``Summer J exceeds ``Winter'' by 10 points. The average number of day 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 0.03 trips/year per person, and from the average number of days (8.6 days), 1 trip per person per year.
The annual rate of location registration to type 5 exchanges is 0.03 times x 8.6 days = 0.248 times/person-year, that is, if traffic is uniform, 80% of the entire population (120 million people) Even if 100 million people (100 million people) owned mobile phones, the memory capacity required for a type 5 exchange would be enough for 70,000 people.

The memory capacity of the 5th class exchange requires position registration as the narrow cylinder moves between 4th class 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.

That is, one mobile phone owner uses memory for 3.87 days a year due to out-of-area travel.

In addition, the number of trips per year is 1.2 times, and it is thought that there are few trips that cover multiple areas in one trip, so 0.66
X 4.92 = 3.2 days of memory usage. Therefore, the registration traffic is 1.2 times X 2 =
2.4 times (registration and deletion).

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+1.2) X 2 =2.4
6 Memory capacity 0.248 x 3.873 = 4.116 days The traffic and memory amount using the Type 5 wireless base station are difficult to calculate and are estimated to be small in reality, so they are ignored.

b) Type 4 Exchange It is necessary to add intra-block flows such as within the Tokyo Bronx or Tohoku block and flows due to day trips in Table 3.

For the former, 0.4903 x 0.66 x 4.92 days = 1.592 days per portable phone per year.As for the latter, the calculation results show that there are 1.456 days per year, which is 7 times.

In addition to these, the 4th type exchange operates in the same way each time it is registered to the 5th type exchange, so if we add this, the traffic amount is (0,4903 + 1.456 +
1.23) X 2-6.35 (times) Memory capacity M 1.592+1.456+4.116
= 7.164 (Sun), i.e. accessed 6.35 times per year, 7
．． Memory will be used for 16 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.

The approximate calculations of the traffic and required memory amount using the subscriber information storage unit of the present invention have been made above. The amount of traffic and memory required will be estimated below if this method is adopted.

■ Traffic As explained in 1) to 1ii), all the location registration 1 billing information, etc. associated with the movement of a mobile phone must be transmitted to a storage unit installed in one location nationwide, so reach a certain amount. In particular, billing information is sent immediately after the user ends a call (
(Otherwise, memory would be required and the effect of centralized arrangement would not be achieved), and it would be performed at the busiest time when call traffic is congested, and the line capacity would need to be increased by this amount. On the other hand, with the present invention, billing information does not need to be sent immediately after a call, but can be sent to KTC-i in one day, one week, or one month at a time, and it is possible to select a time when there is less call traffic, such as at night. , the benefits are great.

■Amount of memory Considering Japan as a whole, if we compare the installation method of the distributed subscriber information storage unit of the present invention with the conventional method of installing it centrally in one place nationwide, the centralized installation requires less memory. It is clear that the amount will be less overall. A quantitative consideration will be given below. In order to achieve service performance equivalent to that of the present invention even if the storage unit is centrally installed in one 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 information storage), so what is the difference between the amount of memory required for the second to fifth type exchanges of the present invention and the amount of memory in the case of centralized arrangement? Then, since the memory capacity of type 5 to type 4 exchanges is extremely small,
- Comparison of the memory amount of a type 3 exchange and the memory amount of a centralized arrangement, and the distributed method is based on M2. It was set as M3. Although the actual values of Mz and M:+ depend on the design concept, that is, the margin technology for the busiest time, the above values are estimated to be 2 to 3.

However, the price of hardware used in storage devices has been decreasing in recent years, and the disadvantage of this method is not so great, but rather the superiority in the amount of traffic 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.

----111 Type 5 roam area can be identified (Actually, this is the most important feature of the PID assignment method of the present invention.) ■ Location of the home area of the individual (mobile phone) who owns it In other words, the accuracy must be such that the address (residence) of the person is clear (however, clear accuracy here does not mean that the user can immediately identify the PID by looking at it; The switch is stored in the subscriber information storage section of the
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: 1) Limiting the area where calls can be made or received; ii) Setting the time and date of making or receiving calls. ■ j) 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 ) Performing class-specific line connections in the event of abnormal traffic, vii) Possibility of superimposition with other mobile communication systems, vii) Possibility of non-telephone (non-voice) services, 1x) PID assignment method with specific rules The number of digits of the PID 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-xxxx
It can be seen that 9 digits (x=0.1.2.-9) is 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 XXX (country ID) Type 4 roaming area, 2 digits for each prefecture XXX (prefecture ID) Type 3 roaming area, ie overlapping (in the case of Tokyo) county 3 digits XXX (City ID) 3 digits XXX (Town ID) in Type 2 roaming area, i.e. ward, town, or equivalent place name (some cities with a population of 50,000 or less are included) Type 1 ROHM area, i.e. 4 digits xxxx (subscriber ID) for street address, housing complex, apartment name, 13 digits in total are required, but in addition to this, 7 digits are required for service class, VIP identification, and PIN number, etc. 20 digits, the number of bits is 4 bits x 20 = 80 pits. 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 imparting method shown in FIG. 6 has a great influence on the operation of the present invention. This point will be explained.

Owners of mobile telephones according to the present invention can make calls from anywhere in the country, and can also receive calls from anywhere in the country. The PID assignment method of the present invention is effective when a call is received. 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 and wants to make a call to Mr. A from a regular telephone. The flow of incoming call signals when Mr. A is in the 1st to 5th type roam areas will be explained below.

[1] In the case of Type 1 Roam area, Mr. 8 dials Mr. A's PID signal (in Figure 6, the PIN and service class are dialed (). 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 type N exchange as Mr. A, and if n = 1, dial only the subscriber ID n =
2 〃 Town ID + subscriber ID dial n = 3 〃
Dial of city ID + subscriber ID n = 4 Dial of 10 city ID + town ID + subscriber ID is sufficient. Further, even if n=1 and the town LD or city ID is dialed, the switch makes the decision, so the desired call receiving operation can be performed without causing an erroneous connection or connection failure. Now,
The first type exchange that manages Mr. 8's telephone sets receives Mr. 8's calling signal and then starts a route selection operation to set up a communication route between Mr. A and Mr. B in the private sector. That is, first, sending out a control signal is started in order to search for Mr. A's location information. KTC-I in Hoya City, Tokyo after decoding Mr. A's self-identification information PID.
When the mobile phone is recognized as being managed by
The control signal is sequentially sent to the upper exchange that manages Mr. 8's telephone, and finally reaches the subscriber information storage section of the 5th type exchange. FIG. 10(b) is an explanatory diagram of the calling operation, and the above operations are shown in (1) to (2).

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 (control) signal is transferred to KTC-IV-1) (■ in the same figure). 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 3rd type exchange (KT-111-1
) transfers the incoming call signal to (■ in the same figure). In this way,
Search the subscriber information storage section. Below is the first type exchange i (K
Since it turns out that Mr. A's roaming area location has not been registered up to TC-1-1), the incoming call signal is transferred to the first class exchange (KTC-1-1) in the same way as a normal telephone call. Assume that the user is not in the home area as a result of checking the MEM, but is registered in the roam area SID.

This position information is transmitted in the direction in which the above-mentioned signal flow is completely reversed, that is, from KTC-I-1 to KTC-I in FIG. 10(b).
To I-1 ([phase]), from KTC-11-1 to KTC-I
[[-1 (■), followed the path --- and returned to the calling exchange KTC-I ([phase], ■, -11110 in the same figure).

However, when sending back the location information of A, each exchange KTC-1
-1, KTC-11-1, -KTC-IV.

KTC-V, KTC-IV, ------1・KTC-I
I has a function of adding connection route information when a communication path is set up between a calling telephone and a called mobile telephone from each exchange and sending it back to the calling exchange. This information is very useful and includes the current call traffic situation known to each intermediate exchange, so the originating exchange uses this information to set the optimal route at that time. It becomes possible to obtain. Note that the route setting technology to be executed below is the same as that in a known fixed network.

That is, a communication path is set from the exchange that manages Mr. B to the exchange KTC-1-1 that manages Mr. A. In Figure 10 (g)), KTC-I→KTC
-n@, indicates that a communication path has been established between KTC-II and KTC-1-10, and a ringback tone [phase] is sent from KTC-I to the calling telephone.

To the called mobile phone, a ring tone is sent from KTC-1-1 via the mobile phone master device SID and the route (0.[
phase]). (Then, on the SI Di, the PI noticed that Mr. A's location was registered on his mobile phone's master device SI Di.)
Since it searches the D storage section and recognizes it, it sends out an incoming call signal addressed to PID1. Here, if Mr. A calls off /'1, a conversation with Mr. 3 will begin.

The routing method according to the present invention as explained above aims to use the telephone network in the most effective manner from the viewpoint of the entire telephone network, so that the receiving side of the communication service can receive high-quality service, and at the same time, the telephone network provider This means that economical network design becomes possible. That is, in the prior art, as shown in FIGS. 2(b) and 2(C), the routing for setting up the call network was simply carried out in the calling side exchange 3, but in the present invention, location registration information The difference is that all exchanges involved in search or transmission can perform the operation, and this difference greatly affects the efficient use of the network.In addition, Fig. 10(b) shows the diagram for easy viewing. Therefore, the routing search state only from KTC-IV-1 is shown. That is, (13-1), (13-
2), (13-3), and (13-4) show this. A signal that sends these search information to KTC-V [
phase] has been added. Such a routing search will be carried out at each exchange and the results will be added to the signals transmitted to the next exchange, all of which will be collected at the originating exchange KTC-I.

Note that when the private phone call between Mr. A and Mr. B ends, the set communication path is released using the same technology as in the fixed telephone network.

[2] In the case of a Type 2 Roam area In this case, from Mr. 3's dialing signal, the Type 2 exchange (KTC-It-1) that manages Mr. A's mobile phone
The operations up to this point are the same as [1].

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-1-1 but in KTC-1-2. As a result, KTC-I[-1 transmits the incoming call signal to KT
Send to C-1-2. When KTC-1-2 searches the MEM and recognizes that the PID is being registered in the SID managed by its own exchange, it sends the incoming call signal to the SID.
Send to j. The following operation is the same as [1].

[3] Type 3 roam area In this case, the operation from Mr. 8's dial signal transmission to the type 3 exchange (KTC-■-1) that manages Mr. A's mobile phone is the same as in [1].

Now, when the incoming call signal addressed to Mr. A is transmitted to KTC-111-1, the third type exchange searches the MEM section and finds that Mr.
When it becomes clear that his location has been registered and that he is in KTC-I[-2 rather than KTC-11-1, which manages his home area, KTC-DI-1 transmits the incoming call signal to KTC-1.
- Send to It-2. In KTC-11-2, MEM
Search for the exchange 1KTc under your own exchange.
- When recognizing that PID is being registered in 1-2,
Sends an incoming call signal to KTC-1-2.

Upon receiving this, KTC-1-2 searches for MEM and recognizes that Mr. A's location is registered in SID. Sends a destination call signal.

The following operation is the same as [1].

[4] Type 4 roam area In this case, the operation from Mr. 8's dial signal transmission to the type 4 exchange (KTC-■-1) that manages Mr. A's mobile phone is the same as [1].

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 KTC-m-2 is present instead of KTC-II[-1, KTC-PJ-1 transmits the incoming call signal to KTC-m-2.
Send to C-1-2. KTC-m-2 searches the MEM and searches for the subordinate exchange KTC-m-2, which is managed by the local exchange.
Upon recognizing that PID is being registered in 11-3,
Sends an incoming call signal to KTC-n-3. The following operation is ■
This is the same as performing the same operation from the next higher level exchange.

[5] Type 5 Roam Area In this case, the operation from Mr. 8's dial signal transmission to the Type 5 exchange (KTC-■) managing Mr. A's mobile phone is the same as in [1].

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. KTC-IV-2 searches for MEM and sends a P
When it recognizes that the ID is being registered, it sends the incoming call signal to K.
Send to TC-I[I-3. The following operation is the same as that performed in [4] from the next higher level exchange.

Next, if Mr. 8's call signal does not correspond to any of the above ■ to ■, but Mr. A's location information cannot be obtained (unregistered state)
Explain.

Technically, this state can be considered to be one of the following, for example:

a) Even though the mobile phone owned by Mr. A was registered in the roaming area, it did not make or receive calls for a certain period of time, so the location registration was canceled according to the regulations, and the phone is not currently turned on. If you are in a cordless phone mode dead zone where radio waves do not reach.

b) If the location registration is canceled for some reason while being superimposed on terrestrial mobile communication such as in car phone mode.

C) If you carry your mobile phone with you without registering your location in your home area (turning it on) and it is currently not turned on or you are in a dead zone in cordless phone mode where radio waves do not reach.

[In the case of a) to C) above, the position information of Mr. 8 cannot be obtained. Further, in the following case, a call is made at the registered location, but since there is no response, the state is effectively the same as a non-registered state. ] d) When the mobile phone is transferred from the service area of the mobile phone master device whose location has been registered using the mobile phone method in residential area mode to another area in residential area mode, and no call is made or received for a certain period of time.

e) If the mobile phone system is in residential area mode or business area mode and the incoming call signal cannot be received even if the user is at the registered location because the power is turned off or the radio wave propagation conditions are poor locally.

A solution to the above case will be explained below.

First, one solution is to have the system automatically call a landline telephone in Mr. A's home area.

This means that even if Mr. A is not present, it is possible to partially satisfy the caller's wishes by using the answering machine or by talking to family members.

The second method is to send a paging signal from a mobile phone wide area calling type i wireless base station via an i type exchange.

In each case of a) to e), the mobile phone is powered on or the power is turned on and location registration is completed, but no call is made or received after a certain period of time has passed. In all of these cases, the mobile phone has the function of starting an inter-channel sweep in order to capture a downlink control signal (a control signal transmitted from a mobile phone master device or a mobile phone wide area paging type i wireless base station). Therefore, it can be said that it is in wide area call mode.

When a call is received to a mobile phone whose location has not been registered as described above, the first step is to register the location of the mobile phone. As explained in No. 254659 "Mobile Telephone Broadband Calling System", the routing after location registration, which is directly related to the present invention, will be explained below.

FIG. 10(C) is an explanatory diagram regarding implementation of a wide area call to a mobile phone in the above-mentioned state. In the same figure,
Of the flow of control signals for routing from the calling telephone, steps 1 to 2 are exactly the same as those shown in FIG. 10 (5), so their explanation will be omitted. Now, when we searched the location registration information of the called mobile phone A at KTC-1-1, it was found that it was unregistered. Sends a call signal from.

For example, if Mr. A's movement range is known in advance, it is effective to use the first type or fourth type of this method. However, in the case shown in the figure, it is assumed that the call cannot be made for some reason. This determination of inability takes a certain period of time after the signal is sent, and if there is no response from the mobile phone, it is determined that the call cannot be made. In this case, the control signal for routing flows through 0.0.0 as shown in FIG. 10(C), and finally enters the KTC-V through . KTC-
At (2), the mobile phone decides to make a wide area call from a type 5 radio base station and transmits a signal to the same base station (2). Upon receiving this, the base station uses a paging radio wave to call the mobile phone A.
Call (■). A is located on the outskirts of Sapporo, Hokkaido, and there are mobile phone master devices in places on the road, but it is 100 meters from the master device.
Suppose you are in an area where reception is not possible, but luckily the power is turned on and you receive this radio wave.

At this time, the mobile phone emits a ringing tone to inform Mr. A that there is an incoming call, and this ringing sound is different from that in the cordless telephone mode, and Mr. A immediately understands the meaning of this ringing sound. When Mr. A heard this, he looked at the call availability display and saw that the red light indicating that calls were not allowed was lit, so when he moved to a different location and approached the nearest mobile phone base unit, the light changed to blue. Therefore, in this case, the user presses the call button that sends out the response signal and waits for a while. The nearest mobile phone master device that received the response signal from the mobile phone examines the content of the signal, stores it in its own device, and sends a message to KTC-1-2.
ID, send signal 10 response signal. This is shown as [phase] in FIG. 10(C).

The KTC-I-2 examines the contents of the PID and further transmits the PID, a signal, and a signal indicating that it is a response signal to a wide area call to the upper exchange (Q~[phase]).

The type 5 exchange that received this recognized that it was a response signal from PID, i+1! The location information of Mr. A is sent to the first type exchange KTC-1 to which the calling telephone belongs. In this case, as mentioned above, the exchange K that was involved in transferring Mr. A's location information
TC-1-1, iKTC-n-1, i, --...-K
TC-IV-1, iKTC-V.

It goes without saying that KTC-IV and KTC-n perform routing from the perspective of their respective exchanges, add that information, and send it to KTC-1.

KT obtained the above routing information and Mr. A's location information.
At C-1, a communication path is set up between calling party B and called party A. In this case, it is assumed that a communication route as shown in FIG. 10(C) is set based on the state of communication traffic at that time. That is, KTC-I■→KTC-n@-+K
TC-III@→KTC-II-2[Yes]→KTC-1
-2 is the communication path between exchanges. Furthermore, a ringback tone [phase] is sent from the KTC-1 to the calling telephone B, and a ring back tone [phase] is sent to the called mobile phone A. [phase] is sent,
When B picks up the handset, the conversation begins. When the call ends, the call path is opened, similar to known fixed-line telephone networks.

The present invention also has a function of transmitting the call signal itself to the mobile phone using radio waves transmitted from the mobile phone wide area call type 1 wireless base station outside of the mobile phone wide area call detailed above. That is, the advantages of this function are as follows.

i) If the service area is in a city, etc., the signal transmitted from the mobile phone master device has poor radio wave propagation characteristics and cannot be received well by the mobile phone, but the signal transmitted from the mobile phone may have a different frequency or When good reception is possible with the mobile phone's parent device due to the adoption of diapersity, etc.

Note that this case also includes a case in which transmission is impossible due to a failure in the transmitter of the mobile phone master device.

ii) In rural areas where the service area is far away from cities and where call traffic is extremely low, the mobile phone main device is installed only for reception without installing a transmitter for economical or maintenance reasons. .

In this case, one or more mobile phone wide area calling type 1 wireless base stations are installed at a time, and these are connected to a type 1 exchange, and the type 1 exchange receives instructions from the upper type i exchange. When executing a wide area call and sending communication information to the mobile phone according to the following. This will be explained in detail below using FIG. 10(d).

Similarly to Figure 10(C), Figure 1O(d) also assumes that Mr. A, whose home area is Hoya City, Tokyo, is traveling around the country carrying a mobile phone. On the other hand, Mr. A's friend 8 lives in Kumamoto and wants to make a call to Mr. A from a regular telephone. In this case, the flow of Mr. A's calling signal is shown in Fig. 10(d), and steps from ■ to (13-2) are exactly the same as Fig. 10(C), and the call signal flow of Mr. A is shown in Fig. 10(d). - It is assumed that a calling signal is sent from the wide-area calling type 3 radio base station to call Mr. A's mobile phone which has an interface with m-1. Assume that the message is received by mobile phone A which is turned on.

Since Mr. A rang a ringtone with a tone unique to wide area calls, Mr. A confirmed that he was being called in a wide area and looked at the display indicating whether the call could be made. In this display, a red lamp indicating whether or not to make a call was lit, but Mr. A's location is on the outskirts of a mountain village in the Saitama area, and there is very little communication traffic, so it is possible that the mobile phone's main device is not equipped with a transmitter. I thought there was, so I tried pressing the call button. Then, mobile phone A sends out a call signal (in this case, a response signal), and in this
The mobile phone master device 5ID2°, which is not equipped with the nearest transmitter, received the ID signal. S.I.D. Then, the signal is inspected and stored in the storage section of the own device, and the 5IDzo
■ A response signal from mobile phone A was sent to the first type exchange KTC-1-2, which manages the mobile phone A. This signal is KTC-I-
2, but this signal contains the P of mobile phone A.
ID, or 5IDz-signal, or response to a wide area call, or SID. Since KTC-1-2 did not have a transmitter and contained a signal indicating the need to send a call signal from a wide area wireless base station, KTC-1-2 had a self-memory unit (ME).
When these signals are stored in M), the above signals and the own exchange ID (K
The type 2 exchange that received the 0 signal sent with TC-■-2) performs the same processing on the received signal as the type 1 exchange described above, and then adds the own ID (KTC-If-2) to the received signal. ) and sent these signals to the third type exchange (KTC-I[r-1)].

The type 3 exchange that received this searched its own subscriber information storage unit and found that the ID of mobile phone A contained in the received signal was a mobile phone wide area calling type 3 radio that has an interface with the own exchange. I recognized that I was called from the base station, so I decided to set up a call route. So K
TC-IV-1@-KT C-V■→KTC-IV@→
A control signal for routing was sent to the calling party's exchange in the order of KTC-111@ - KTC-If@ → KTC-IC, and a ringback tone was played from KTC-1 to the calling telephone. On the other hand, KTC-■ uses the sent routing information for setting up a communication path to communicate with KTC-I [phase].
→KTC-n@→KTC-m-1 [phase] was set as the communication path.

Next, as a result of the routing information, KTC-I-1 determines that it is appropriate to send wide area communications such as incoming call signals and voice communications from KRC-I[1-1, which has an interface with its own exchange, to the mobile phone. Although it is possible to transmit from all KRC-m-1 base stations, KTC
- Sent a call path setup request signal to II-2 @. KTC
- In U-2, KTC is used to effectively utilize frequencies as above.
- Mobile phone wide area calling first class wireless base station KRC-■-2 which has an interface with the first class exchange KTC-1-2 from among the many KRC-1s included in the service area of 11-2. @■ requested to send out an incoming call signal.

However, only the first type wireless base station exists, and the i-1. i-1, i
---.If there is no type 1 wireless base station, the I-type wireless base station will naturally send out call signals and the like.

KR and C-1-2, which received this signal, sent an incoming call signal to mobile phone A using their own base station transmitter @. This incoming call signal is confirmed by Mr. A, and by putting the mobile phone in a hang-off state, Mr. A's voice is transmitted from the mobile phone to the mobile phone master device 5IDz. Sent to @.

On the other hand, if calling phone B is also in a hang-off state, Mr. A and B
The call will be carried out in the private sector.

When the call ends and the hang-on state occurs, the above communication path B-KTC-I-KTC-n-KTC-111-
KTC-11! -1-KTC-n-2-KTC-1-2
-3I Dz. It goes without saying that -A is released.

In addition, in the above explanation, KTC-n-2 is KTC-II
It is assumed that Mr. A is under the control of I-1, but if Mr. A's location is in Hokkaido as explained in Figure 10 (C), he is not under the control of KTC-1 [I-1]. in this case,
KTC-11-2 is the third type exchange KTC that manages this.
111-2, the 4th type exchange KTC-IV-2, and further to the 5th type exchange KTC-V, unless there is a response from A, the information on the called mobile phone stored here is used to make a wide area call by KRC-V, etc. Naturally, a call and a call signal will be sent.

Furthermore, the response signal from the called mobile phone described above is not necessarily SID. , KTC-1-2゜KTC-n
- There is no need to store it in the second storage unit as far as the incoming call is concerned, but only when Mr. A subsequently calls another person or receives another call from someone other than Mr. 8. This information is stored because it makes it convenient to process calls in and out of first-class exchanges.

Other benefits when implementing the PID assignment method for mobile phone systems according to 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, they can use group calls (10), including the necessary people, as shown in Figure 6. 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 PIDs 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.; PID in the mobile phone system according to the present invention is prefecture ID;
D. City 10. Since the town 10 and subscriber ID are classified and given, it is possible to make a call even if the caller does not know the address zip code, town ID, and subscriber IDL as the other party's mobile phone number. In this case, the first-class exchange that received the call uses its own postal code and area ID comparison table, and uses the following information: 602, town ID (e.g. 123), subscriber number (e.g. 1234N, For example, #0-602-123-1 from a mobile phone
You can talk to the other party by dialing 234. 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 uses the Kyoto Prefecture ID (for example, 555) and city ID.
(for example, 45).

Furthermore, in the mobile telephone system according to the present invention, it is not necessary to remember the telephone number of the other party; in other words, as long as you know the address and name of the other party (which does not necessarily have to be accurate), you can use KTC-1. It will give you a more accurate number based on the results of inference using AT (artificial intelligence).

For example, if you dial ``Kyotoshi Chikara Migyoku Shimokuchiuri Oomya Agartanakacho 202 nosunchinosehajime'', you can dial ``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 can be easily performed using the result AI, which is separated from the prefecture ■D, 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 using weak mobile phone transmission power in urban areas) For the future prospects of mobile communications in Japan, please refer to the document According to the long-term outlook [published by the Radio Technology Council, Radio Promotion Agency, July 1989], the importance of mobile communications is expected to increase in the future, and the demand for quantitative expansion and qualitative improvement is expected to increase. However, since mobile communications services would not be possible without the use of radio waves, it is stated that it is necessary to continue to secure the necessary radio waves as much as possible to meet the demand for mobile communications.

It is necessary to take measures to integrate various systems, develop technology for effective use of radio waves, develop new frequencies for mobile communications, and increase the capacity to accommodate mobile communications subscribers.

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 wire 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 1.15 million (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 and foot traffic communications 100,000 ■ Aircraft telephones 0.1 million ■ 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 radio 600,000 for various commercial purposes 4.8 million (4% of the population) Metropolitan area 12
00,000 (25% of the nation) Personal wireless 600,000 (5% of the population) Metropolitan area 15
00,000 (25% of the nation's total) Fishery radio 40,000 As mentioned above, Japan's mobile communications, especially land mobile radio telephones, are expected to make great progress.

The present invention relates to mobile telephones among the above-mentioned mobile communications, and refers to a system that includes all of the above-mentioned items (1) to (2). FIGS. 5(b) and 5(C) show the national mobile phone network configuration according to the present invention.

3, 5.5 (Configuration of mobile phone system in Tokyo's 23 wards as an embodiment of the present invention) A case in which the present invention is applied to an urban area will be explained in detail. The system configuration of the mobile phone system implemented in the 23 wards of Tokyo is shown below.The system configuration of the mobile phone system implemented in the 23 wards of Tokyo is shown first.
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 are fully exhibited even at the above-mentioned stage of partial introduction.

3, 5.6 (Configuration of the mobile phone system according to the present invention when the nationwide network is completed) Construction of the mobile phone system according to the present invention will begin in the future, and
Assuming that it will be almost completed around 2000, the system configuration will be as shown in FIGS. 5(a) and 5(b). That is, in FIG. 5(a), the first type exchange KTC-1-
1 is an exchange in which a mobile phone 1 (PID, ) is accommodated. KTC-1-1 has many other mobile phones (1
, i3), a mobile phone master device (1, 2°3), and a landline telephone (1, 1, i3), as well as a large number of ordinary telephones not shown in the figure. (1~30
A circle indicates a communicable area from one parent device. ) Also, the mobile phone master device 4 in the figure has the same electrical characteristics as the master devices in houses L1 and i3, but it is installed on a utility pole outdoors or on a lighting pole in a park, etc. K
It is connected to TC-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 Figure 5(a)
represents a large-scale building, and the circle indicated by a broken line represents the service area that can be communicated with from one mobile phone master device. Since there are many installed within the building, it is possible to make and receive calls using a mobile phone from any location. Calls are possible. These mobile phones, visual devices, etc. are KTC-1-1 or K
It is housed in TC-I-2. MEM of KTC-1-1 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 exchange (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-II [-1>), and the 3rd type exchange is connected to the higher level 4th type exchange (KTC-IV-1), and the 4th type exchange is the highest type 5 exchange (K T C-V
), as shown in the diagram, and is also configured to allow the use of satellites exclusively for mobile phone calls, making it possible to construct a mobile phone network covering every corner of Japan and Japan. Further, 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 that can be applied even 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, control signals are constantly being transmitted from the mobile phone master device in the business district mode (there is no such concern with the mobile phone system in the residential district mode). Therefore, the downlink control channel emitted from the nearest mobile phone main unit on the utility pole on the road side can be sufficiently performed by the mobile phone even in 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 becomes unreceivable).However, at this time, another mobile phone master device It is nearby, and the downlink control channel 1ch from this parent device should show a received input electric field value sufficient to be captured by the mobile phone.Therefore, the SID and An attempt is made to store a vacant CH number as a call CH number in the roam area call information storage unit of the mobile phone, but the car is moving so fast that the above process is not completed before the car is connected to another mobile phone. If you move to a location close to the phone master device, you will be unable to communicate with the mobile phone master device that has already captured the downlink control CI due to a drop in the electric field. If the vehicle speed is 36 km/h, the speed is 10 + y + per second. On the other hand, assuming that mobile phone master devices are installed every 25 meters on the road side, the downlink control CH issued by a new mobile phone master device is transmitted to the mobile phone every 2.5 seconds. (The difficulty increases when the vehicle speed is high.) In such a situation, even if a call is successfully set up between a parent device and the mobile phone, the call will not start. The communication channel must be switched every 2.5 seconds after the communication has been completed, which increases the number of ineffective parts of the system's operation, and also increases various types of noise from the viewpoint of the communication quality of the communication channel, which is not desirable. Therefore, the mobile phone of the present invention notifies the control unit that electric field fluctuations (noise level fluctuations) of a certain period or more are occurring due to the operation of the noise level detector shown in FIG. 4(a). The control unit that received the signal did not receive the radio waves emitted from the mobile phone master device, and the fifth
The oscillation frequency of the receiving frequency synthesizer is controlled so as to capture the downlink control CH emitted from the mobile phone wide area calling type 4 radio base station (KRC-IV) shown in Fig. 1). In addition, KTC requires the mobile phone master device to call its own mobile phone in wideband calling mode (Type 4).
-Request to inform I. Upon receiving this, KTC-I determines that the mobile phone is in a car, and KTC-I
Car telephone exchange MT that manages the same area as C-1
C (see FIG. 5(b)), the PID of the mobile phone is determined using the downlink control channel from KRC-IV.

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

KRC-IV has enough transmission power to cover a 3 to 5-circle radius like NTT's pager service, so the mobile phone can use KRC-IV without sudden fluctuations in 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-N, 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.

The above explanation was for a mobile phone system in business district mode, but if it is a mobile phone system in residential area mode, downlink control signals are not constantly sent from the mobile phone device, and the troubles described above do not occur. .

That is, since the mobile phone is switching between the cordless telephone mode and the wide area call mode to receive the call, in this case, if there is an incoming call while receiving the wide area call mode (type 4), the call will be made.

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 PBX that is installed on the same company premises or in a large building and can operate in the same way as a Type 1 exchange.
Alternatively, a wireless system control device will be explained.

The mobile phone system of 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. Fifth
Figure (c) is 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,
) are distributed throughout the premises.
, explains that it is possible to continue talking even if the user moves from place to place while walking along the path near the IB and IC.

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 a mobile phone makes a call to a general telephone (TI) 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 PID+ becomes large, and when it becomes 25 m or more, the quality of communication deteriorates. In this state, 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 the IB is not in communication with another mobile phone, the other party of the mobile phone 1 is switched from the IA to the IB.

This means that the CPU is connected to the switch S W 3 in the communication path switching section.
(In the figure, the black triangle means that IA and TI are connected) is turned off and SWz is turned on (in the figure, the white square is changed to a black triangle).

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 approaches the IC from IB, PID, -IB is changed to PID by switching the communication path.
, -IC 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 companies with premises dispersed in various places, but or PB in a relatively small campus.
It is more economical to incorporate it inside X.

Mobile phones used in general homes are not housed in such a PBX or RC, but are housed directly in a first-class 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.

Furthermore, another embodiment will be described as a connection interface with an existing national telephone network, for example, the NTT telephone network, as a configuration of the mobile telephone system of the present invention. FIG. 5(f) shows this embodiment. As shown in the figure, the mobile phone network according to the present invention and N
Although it has an interface with the TT telephone network at a higher exchange level, it is unique in that it has a completely separate route for KTC-n and below. This is the figure 5 (C) already explained.
Technically speaking, this increases independence compared to the sharing of exchanges at each layer in the nodes of NTT's telephone network. In this case, the KTC-1 may include not only a mobile phone but also a general telephone, a pager, and even a KTC-m or KTC-
It is a matter of course that IV can accommodate the car telephone system.

The system configuration example shown in FIG. 5(f) is a configuration suitable for a mobile phone network operated by a corporate entity other than NTT.

In addition, in Figure 5 (f), the contact 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), (g)), (
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. Furthermore, each utility pole on the aisle side is equipped with a wireless transmitter/receiver that has almost the same functionality as a cordless telephone main unit. 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 (2) for storing, changing, and deleting 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 figures from ■ to ■ in the aforementioned document "Long-term Prospects for Radio Wave Usage J. From these figures, the demand within Tokyo's 23 wards is estimated to be 1 million, which is 1/10. Since the total area of is 581- square kilometers, there will be 1721 1.1 in a square of 25 m on a side.In other words, there will be one cordless telephone within a square of 25 m on a side.However, the above calculation assumes that the traffic is uniform. This is considered to be a reasonable assumption since the demand 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 according to the present invention is used within Tokyo's 23 wards, if it is used in cordless phone mode, it will be possible to make calls throughout the wards of Tokyo. Although it has become clear that this is possible, since many subscribers will be using it at the same time, there is a problem as to 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 25. This is because in order to avoid radio wave interference, channels currently in use are not used in adjacent zones and are used separately.

1i)) Rahic is 0.037-ran (daily usage frequency is 6 times a day, 3 minutes/time, peak hour concentration rate is 10/1) Traffic such as location registration and new services is 0.027-ran. do. The former is a design condition that is three times the traffic of current car telephones.

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

iv) The area within Tokyo's 23 wards is 58 Hafl, and there is 1
Assume that 0,000,000 parent devices are installed. This value would be a reasonable value assuming a system that includes all of the above-mentioned document ``Long-term prospects for radio wave use''.

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 the call volume that Erlang can carry.

In other words, it was shown that 762 subscribers could be used in a 25m square area under the above usage conditions.

Here, since the number of repeated zones is 25, it is shown that the number of subscribers accommodated per zone is 30 people in a 25 m square area under the above usage conditions.

Therefore, within the range of 1H, there are 48,800 (people/kd) x 581 (W) = 2,835 in the entire Tokyo ward.
It can be seen that 2,800 people (in 23 wards), or approximately 28 million people, can use the service. The above calculations assume that the traffic density within the 23 wards is constant, but in reality, it is assumed that mobile phones will be frequently used in wholesale markets, event venues, etc. Therefore, assuming that the traffic density in such a place is four times the average density, the number of mobile phones that can be accommodated is 28352800X -=7088200, or about 71
00,000 (However, if the zone is divided into four, the average density and the conventional value will suffice). By the way, the current population of the 23 wards is 860.
Since the number of people is about 10,000, this value is estimated to exceed the number of people who require mobile phones, indicating that there is sufficient capacity.

From the above calculation results, it can be seen that in this calculation example, the following values are obtained as the number of accommodated subscribers of the mobile phone system in residential area mode and business area mode.

■ Residential area mode: 8 people per mobile phone base device (needs to accommodate 8 mobile phones) ■ Business area mode: 30 people per mobile phone base unit (needs to accommodate 30 mobile phones) However, as a practical matter, there is a large amount of traffic from mobile phones in places where many people gather, such as the aforementioned downtown areas, fairgrounds, and baseball stadiums. It becomes necessary to install a parent device.Technically, this is completely possible, and in this case, the parent device configuration is to centrally install a large number of parent device radios in the same rack, such as in a car phone 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 enough.

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 carrier frequency interval per channel (currently 12.5 KHz 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 C. 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. An example will show that it is possible to obtain the effect. In each of the following cases, the mobile phone is in the corresponding mode, i.e. when used in a business or residence, the mobile phone is in cordless phone mode, if) the mobile phone is used while walking on a road, etc. iv) If you are in a car, use a mobile phone in car phone mode. iv) If you are on a train, use a mobile phone in train phone mode. Mobile phone ■) If you are on board a ship, a mobile phone in ship phone modevi) If you are on board a ship that performs maritime satellite communications, a mobile phone in maritime satellite communication modevi) If you are on board an aircraft, a mobile phone in maritime satellite communication mode In this case, the objective is to realize a system that can be used as a mobile phone in aircraft telephone mode.

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 various systems such as pagers, train telephones, ship telephones, etc., 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 the specific A device has a specific combination with a telephone other than that telephone, even if it exists within a short distance where wireless communication is possible. Met.

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

i) Receiving a location registration signal from any mobile phone and storing it in its own device, the wireless system control unit G1 transmits the subscriber information of the mobile phone to a first type exchange such as a PBX or 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.

ji) When making a call between a mobile phone in a roaming area and a mobile phone master device, the PTD 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 terminal exchanges (hereinafter, exchanges with added functions are referred to as type 1 exchanges)) (i) Cordless telephones Stores subscriber information such as PID signal of mobile phone sent from parent device +ii)
If the PID signal of the mobile phone in the roaming area is accepted among the PID signals in item i), the content of the PID signal is investigated. 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.

(ni) When an incoming call signal destined for the mobile phone comes from a type 2 exchange or a mobile phone or general telephone set under the own exchange, the incoming call signal is sent to the parent device.

Gv) In order to operate as a mobile phone system in residential area mode and business area mode or as a mobile phone in continuous location registration request mode, the above-described functions should be provided.

By adding the functions described above, a cordless telephone can be used as a mobile phone system according to the present invention. FIG. 4(b) shows the internal configurations of the parent device and the mobile phone, and the wireless channel configuration between the two devices, and FIG. 7(a) shows the flow of calls made and received between the two 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 according to the present invention can be fulfilled. In fact, if the mobile telephone system according to the present invention becomes widespread, the popularity of cordless telephones will dramatically decrease, and the mobile telephone system will become widespread in fields that were conventionally considered to be applicable areas of cordless telephones. However, in the ``long-term outlook for radio wave utilization'' mentioned above, the current system ■~
Since we do not foresee the emergence of a system that includes all of the above, for example, we assume that there will be a very large number of cordless telephones, 7 million nationwide, so if you are using the mobile phone of the present invention while walking,
We have already provided instructions on how to use it inside homes and at event venues.
Assuming the distribution of parent devices in the region where cordless telephones have spread to 1,000,000,000,000,000 people, how to use them, and
This was done while clarifying the differences in software, etc.

Therefore, if the mobile telephone system according to the present invention becomes widespread, the cordless telephone system, which has become less 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 according to 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, a description will be given of the NTT system configuration used in practical use as a car phone and the network configuration of this and the present invention.

Figure 9 shows this. The right half of the figure shows the car telephone system configuration, the left half shows the network configuration of 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 (
[Research and Practical Application Report on "Car Telephone Radio Line Control" Vol. 26, No. 7, 1977] 3, 5.8-2 Regarding the method of superimposing the C mobile phone system with the car phone system] Now, below, the mobile phone system of the present invention will be explained. A method of superimposing this on the current car telephone system will be explained using FIG.

In the figure, the left side of the broken line is the mobile telephone network of the present invention, and the mobile telephone network is accessed from KTC-IV to the mobile telephone exchange MTC.

In other words, from the Type 4 exchange to the Mobile Telephone Exchange (MTC)
connected to. 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, ##01-XXX-X
X-XXX-XXXX, except ##01 is mobile phone PI
D, ×=0°1.2. -・-9 is an arbitrary number. In practice, a speed dial or the like can be used, and this location registration can be carried out easily.), 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 has received the location registration from the mobile telephone The reception will also remember the location registration. Also,
The MTC notifies 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 unit. The type 4 exchange that received this notification decodes the PID of the mobile phone and sends subscriber information such as the current location registration information of the mobile phone to the type 3 to 1 exchange that manages the mobile phone. Transmit 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.

First, when the handset of the car telephone is lifted, the following mobile station originating 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. 1O (a)) ii) The radio network control station indicates an empty communication channel in the radio zone using the transmission control channel.

1ii) 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. As a result, the following (V)
Move on to the operation.

■) 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 billing information memory unit is made ready to start billing when a call is started.

Also, notifies 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, calling the called party via KTC-rV, KTC-Ill, KTC-II and KTC-1. However, the number of calls is registered for the mobile phone, not the car phone. In addition, in order to bill the charges for the mobile phone, for example, the information is transferred to the first-class exchange billing department that manages the home area of the mobile phone, and the charges are added up with the charges registered in other ROHM areas. This will be done to the phone owner■.

The above operation is illustrated in FIG. 10.

Long Blade” Hiura Prisoner 1 fall 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.

1ii) The radio network control station calls the called mobile device using the incoming call control line through all the 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-xxx
x) 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 9, a discriminator, etc. are added to the mobile phone main body for making and receiving calls from a mobile phone.

■Match the mobile phone's incoming and outgoing call signal interface to that of 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, method (2) is used, but the car phone system is widely used in Japan, and it is not economical to equip all car phone mobile devices, so it will be limited to only 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. 4(a), but a method that is introduced sequentially when the car phone hardware is updated may also be used. That is, SWr in the same figure
~SWz is configured to interlock, and is usually connected to the ■ side. When superimposing with another system, SW1
~Turn SW2 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 mobile communication system such as a car telephone system or a ship telephone system, the feasibility of (2) will 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.

Assuming that the mobile phone is powered on and ready to make a call, the above-described mobile station calling operations i) to V) are performed. 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.
A signal of Y+P IDl 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 the MTC, the mobile phone is in a state where it is overlapped with the car phone system for the 4th Ml exchange that has an interface with the MTC as described above, and the location registration is completed in the location information memory section of the own MTC. We will notify you that there is. The 4th type exchange that received this message decodes the PID of the mobile phone, and the 3rd to 4th type exchanges that manage the mobile phone
transmitting subscriber information of the mobile phone to a type 1 exchange;
Memorize each.

Now, after the above location registration is completed, calls from the mobile phone can be made with the same operations as calls from a car phone.Furthermore, charges to the mobile phone are also the same as the above-mentioned superimposition method. It is carried out by the following method.

Next, regarding incoming calls, the call is received using the same operation as the superimposition method described above, but the ringing is not to the car phone but to the mobile phone, and the user can use the mobile phone while in the car. It is now possible to make calls using the .

In this case, the superimposition can be canceled by dialing a special number (for example, **11) 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 of making and receiving calls from a mobile phone brought into the car by having the car phone mobile unit installed in the car operate as a mobile phone master device, which requires the following modifications to the car phone. and ■Equip the 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 (c) shows the connection between these systems and the network configuration according to the present invention. Both systems have an interface with the KT C-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 cordless phone mode in urban areas, the wireless radio wave transmission output of the mobile phone or cordless phone of the present invention is extremely weak at about 6 mW.Therefore, there are obstructions etc. in the space near the transmission. When doing so, the radio wave propagation characteristics deteriorate, resulting in poor call quality and, in some cases, making calls impossible. It is necessary to take into account that this often occurs especially in large buildings, underground malls, underground parking lots, etc.

On the other hand, the transmission power of radio waves emitted from a pager type base station is extremely high, at just under 250, and the current service maintains a fairly good call rate even in a closed space on the first basement floor. Therefore, when the mobile phone system is on standby (downlink control CH is being captured) in business district mode, if the cordless phone master device or the control C1 of the mobile phone device (control C1) becomes unable to be acquired due to movement of location, the mobile phone The radio frequency of the control channel during standby is changed from the cordless phone to the paging frequency of the pager.This is possible in terms of hardware, and the mobile phone shown in Fig. 4(a) uses a noise level detector. If the noise level of the mobile phone exceeds a certain value, the frequency of the receiving frequency synthesizer is changed to the paging frequency according to instructions from the control unit.After that, the mobile phone will be used as a paging frequency for paging. The operation is exactly the same as that of a bell (portable device). Fig. 7 (b) shows the flow of the incoming call operation. To the calling base station of the pager system, call the KTC- in Fig. 5 (C). It is assumed that a function has been added so that when a control signal for calling a PID is received from 1, a calling radio wave is sent out.

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. In KTC-1, PID+SI
Receive D signal and discover that PID is in SID
Sends an incoming call signal to the ID.

The parent device receives an incoming call signal from KTC-1,
After confirming the PID 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 will receive a message from the pager local exchange (the first type exchange according to the present invention) saying, ``You are currently receiving a pager call. Please wait for a while.'' A voice service such as j is in progress. Figure 7 (
(See b)) If the call availability display on your mobile phone cannot be displayed, walk to the 1st 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. Display 1i1! If the call is accepted and 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 call can be made with the caller using the same operation as above. I can do it. 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 mobile phone wide area call type 5 base station (satellite abbreviated as KRC-■) will be explained.

By around the year 2000, the mobile telephone system according to the present invention in Japan has become widespread, and it is thought that a situation has emerged in which calls can be made anytime, from anywhere, and to any place. 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 according to the present invention, private communications and other public communications may also be considered as communications in these places.
The method according to the 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 made and there is no response, a call from a wide area call type 1 wireless base station (n = 1 + 2 + 3. and 4) or a car phone, if it is superimposed, a call from the same type 4 wireless base station If there is no answer, call based on the subscriber's contract.

■ 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 the car phone or listening to it as audio information.

In addition, mobile phone wide area call type 1 (n = 1 + 2
, 3.4 and 5) Transmission signal traffic from wireless base stations will be explained. As described above, most of the mobile phone traffic according to 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, the number of traffic decreases in the order of 1st, 3rd and 4th type wireless base stations, and the type 5 wireless base station, which uses satellites, has the least amount of traffic. 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 system cost will not be very high, and it is considered that the system as a whole can be used in a harmonious manner.

3.5.9 (Regarding functions other than the calling function of the mobile phone) Since the mobile phone according to the present invention can make and receive calls anywhere in the country, it has various benefits other than the phone's original calling function, as described below.

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 4 shows a comparison of these ID functions.

Table 4 Comparison of functions between 1'C card (magnetic card) and mobile phone as ID (fi) 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.

Mr. A, who owns a mobile phone (PID), went shopping at B store. Assume that the amount to be paid at this time is 85,000 yen. When Mr. A turns on his mobile phone inside Store B (near the cash register), a mobile phone master device (PID,
) and complete the location registration of the own mobile phone as described. That is, it is stored in the roam area type 1 exchange subscriber information storage section.

Next, Mr. A presses the PIDI function buttons and numbers in the following order (###85000) to display them on the display.

Show this display to the cashier at the store, confirm it, enter your PIN, and turn on the quick call button.
This signal is sent to the storage section of the subscriber information section of the first type exchange via x, and is sent to the credit storage section of the special information storage section P.
ID, +PID, ±85000 are stored. However, if you have a history of insolvency, there will be an answer back that will prevent you from using your credit card.

After this process is completed, there is a voice answer from the KTC-1 saying, “PID is now available.
D. There was an input to record the credit amount to the owner in memory. The amount is 85,000 yen” is sent to the PIDI (and PID, mobile phone or PID, 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, prD
+ (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.

fii> 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 PID, so that even if it is stolen, it cannot be misused, but the number of telephone cards in circulation has increased recently. With the rapid increase in the number of telephone cards, the use of mobile phones that can use telephone cards will provide greater convenience to telephone card holders.

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.

(ii) Message service When the mobile phone is turned on, the message addressed to the PID previously transmitted is stored in the subscriber information memory section of the first class exchange that manages the area, and the PID If you wish to receive 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, turn on the power switch (and
Mobile phones located in parks, roads, etc. (mobile phone systems in cordless phone mode and business district mode) always capture the downlink control channel of the parent device, so the SID of the parent device
It is possible to know the name of the place where you are by displaying it on the display of your mobile phone. That is, control C
A request signal for displaying the SID signal of the mobile phone master device is transmitted to the mobile phone master device that is currently acquiring H. That is, when function button ##8o is pressed, the SID captured at that time can be displayed.

Also, inform the first type exchange in advance of the PID2 of your destination (visited place) (Route guidance service mode ##8
2) and PID match the address of the city, town, village, etc., so when you approach this address, the ringer of the mobile phone will notify you that the destination is nearby, and the SID or PI of the destination you are visiting will be notified.
When the control channel of the mobile phone master device D is captured, the current location is notified by a high-level ringing sound. Thus,
Mobile phone owners can go to their destinations without any effort.

(V) (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 the type of driver's license, driving history, and the age of the 5th violation class. 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 card of various organizations including golf membership card In addition to PID of mobile phone, golf membership card (7) P
By adding an ID (abbreviated as GPID), it can 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. Once again, if the card is inserted into the D confirmation device, 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 from home, for example, without having to go to the polling station on the day of voting. It will be possible to get it done. That is, 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, for example ###11, is displayed.
When dialing , the transmission signal is sent via the subscriber information storage section of KTC-I 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. In addition, voters who do not own a mobile phone can vote in the traditional way (and even those who own a mobile phone can change to the traditional voting method for some reason. This is because the voting center and voter information storage unit This is because they are connected via a direct line, and it is immediately possible to determine whether the PID or voting method is being used.However, when voting using a mobile phone, the person's voiceprint is required in advance to confirm that the person is the person voting. It is necessary to submit a password (numbers) (election PII) or a signature. By using PID + PID for each purpose in a similar function such as in a referendum or in a machine that directly asks people for or against national politics, it becomes easier to display the pros and cons and participate in national politics. It can also be expected to improve work efficiency in censuses, etc.

(vi) Function as an input terminal for deposits to and withdrawals from a bank account, purchase and sale of bonds and one share proprietary securities, etc. PID and PIN of the mobile phone
) 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. In the case of the cordless telephone mode, it is assumed that the control signal from the mobile telephone master device is, in principle, constantly transmitted, that is, in the business district mode.

First, I will explain how to use it when you are in a home area, as there is no difference in using the mobile phone system in residential area mode from a regular telephone or a cordless telephone currently being serviced by NTT, and there is no particularly new operation on the network side. is 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.
Let Mr. A's PID be PIDI. 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, in the business district mode, the mobile phone that is receiving the control signal will receive the downlink signal sent from the mobile phone master device installed in each nearby residence as you walk. Upon receiving the control channel signal, the location registration will be changed every time the parent device changes.

That is, the SID signal, which is the ID of the parent device, is constantly flowing on the downlink control channel sent out from each parent device, and the mobile phone that receives this signal compares the parent device SID signal in its own memory and uses it. Result: SID already memorized
(i.e., it is in a type 1 roam area), and at this time, it sends its own PID to the new parent device for registration.
, by transmitting signals using an uplink control channel.

The new master device that received the PID signal searches its own memory section and recognizes that it is not the PID of the mobile phone that is always paired with the visual device, stores it in its own memory section and transmits it to the first type exchange. A request is made to the subscriber information storage unit of the mobile phone to register the location of the mobile phone.

At this time, the signal is from the parent device 5IDz and the mobile phone PID,
Therefore, the subscriber information storage section of the first type exchange that received this signal stores the mobile phone P.
The current location of the ID, which was the SID of the home area, is rewritten and the current location of the parent device 5 ID2 is newly stored. Furthermore, at this point, it is of course possible to use the mobile phone as a state-of-the-art device, and Mr. A can talk to the other party on the road via a third party's parent device (SID2).

In other words, for making calls, the state-of-the-art device SID is already accessible, and if you perform the same dialing operation as making a call from the home area, the call signal from the mobile phone will be accepted via the state-of-the-art device. The first type exchange confirms that the current location of the mobile phone is registered in the parent device SIDz in the first type ROHM area by searching the subscriber information memory section, and charges the first type exchange 9. Instruct the department to charge the bill in PID and name at the time the call starts.

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, if it is confirmed that the mobile phone is currently registered in the parent device 5IDz, the parent device SID.

The mobile phone PID and destination call signal are sent to the mobile phone. Upon receiving this, the parent device SID searches the PID signal memory section within its own device, and when it confirms that the PID is registered in its own service area, calls the mobile phone using the downlink control channel. Therefore, the PID and signal are sent out. 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 a ringback tone and the like to the caller 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 power is turned 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 is not registered in the subscriber information storage unit (location registration storage unit) of the first type exchange, so the call will be made assuming that the mobile phone is in the home area. . 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, base devices for mobile phones are installed on utility poles and the like in various places, and it is assumed that it is possible to talk to any of these base devices at any location 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 S I D3 is captured, the SID and signal of the communication partner are stored in the memory section of the own device, and the own PID and signal are transmitted to the parent device S through the uplink control channel.
ID! Send to.

The parent device 5 ID3 that received this sends a P to its own device memory section.
ID, and at the same time sends a location registration request signal (PID, +SID3) 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 5IDs.

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 acceptance button works as an acceptance button).
I continued walking. When I passed under the guard, the light changed to blue and I was able to receive a call, 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 open a message. −
・ ii) Departing and receiving calls from the Type 2 roam area Now, after completing the above business, Mr. A decided to finish his walk and returned home, and this time he went to the office to handle a certain business. Suppose you decide to go to

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, the downlink control channel of the mobile phone master device (SID3) installed on a nearby utility pole is captured, and the first mobile phone master device, which is managing this mobile phone master device, uses a process similar to that described above. A current location registration request signal is transmitted to the subscriber information storage section (location registration memory section) of the type exchange KTC-1-(2). Upon receiving this, the location registration memory section stores the PID of the mobile phone,
Based on the signal structure of the signal, it is determined that the mobile phone is not an optical switch, but a mobile phone that has a home area in another type 1 switch (KTC-I-1) within the same city, and stores the information in its own location registration memory. Mobile phone location registration (PID,
+SID,) and manages the self-declared device and the mobile phone (manages the Type 2 roam area)
A location registration completion signal is sent to the second type exchange (KTC-II-1) to report that the mobile phone master device SID:+ has received a location registration request for the 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-1)
-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, the PID is stored in the billing information storage section of the subscriber information storage section of the first type exchange.

The billing information is periodically transferred once a month to the first type exchange billing department where Mr. A is located, and Mr. A is billed in one lump sum.

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 calling party is under the switch that manages Mr. A's home area, the current location of the called party is known at the level of the first class switch KTC-1-1. However, 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 will enter KTC-It-1, so the called telephone signal will be sent to the KTC-It-1. When it is analyzed and determined that it is addressed to a mobile phone, K
The subscriber information storage section in TC-11-1 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 subordinate type 1 exchange KTC-1-2, and an incoming call signal addressed to KTC-1-2 is transmitted. KTC-1- which received this signal
In step 2, the own subscriber information storage unit is searched and the mobile phone parent device (SID,
Via PID of the mobile phone.

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 City) to his office, carrying 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 sends PID and signals using the uplink control channel to register the location, but as the walk progresses, the user reaches a location beyond the area controlled by the first type exchange. When this area is crossed at the next point, the parent equipment installed there (which is under another first-class exchange KTC-1-2) will exchange signals using the control channel as before. A location registration signal is sent, but the PI from the mobile phone via the parent device is
D. Another type 1 exchange KTC-■-2 (
As a result of investigating the PID and signal, it was determined that the mobile phone was not under the control of the own exchange (it was determined that it was a different type 1 exchange, KTC-1-1), and the mobile phone was connected to the own exchange. A location registration signal of the mobile phone is sent to the managing second type exchange KTC-If-1.The second type exchange subscriber information storage unit that receives this signal sends the P I to the white part.
D, +S I D, a subordinate type 1 exchange KTC-1 that stores signals and manages the home area of the mobile phone.
-1 to register the current location 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.

1ii) Call from Type 3 Roam Area Mr. A decided to drive his car one day to visit a friend living in Musashino City (Type 3 Roam 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 parked my car on the road and called my friend using my cell phone.
I decided to ask for 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-1-3) that manages this area according to the process already described. It's here. Upon receiving this signal, the subscriber information storage unit investigates the PIDI signal of the mobile phone and recognizes that the mobile phone has a home area in another city. We reported to the managing Type 2 exchange (KTC-If-2) that we are requesting PID and signal location registration. As a result, the second
The subscriber information storage unit of the local exchange memorizes the sent signal and, as a result of investigation, recognizes that the mobile phone has a home area in another city, and manages the local exchange (and the mobile phone). Type 3 exchange, which is a higher-level exchange (
These signals were transferred to KTC-m-1).

Upon receiving this signal, KTC-m-1 stores it in the subscriber information storage section of its own exchange and also stores the location registration of PID for the second type and first type exchanges that manage the mobile phone. requested that it be done.

It is clear from what has already been explained that once the above conditions are completed, the mobile phone carried by Mr. A will be able to make and receive calls from any telephone located anywhere in Japan. Although I called a friend at the place I was visiting and asked for directions, it is not always necessary to use this method. You can achieve the same goal without having to worry about it.

iv) Calls made and received from Type 4 ROHM area One day, Mr. A decided to travel to the Takasaki region (Type 4 ROHM area) for new business. I boarded the train carrying my mobile phone. I had no particular business to attend to in the car, but I left my cell phone turned on in case I received a call from my office. Then, 15 minutes before I got off at Takasaki Station, an incoming call signal rang on my cell phone. This means that each car on the train you ride is equipped with a mobile phone master device, and the mobile phone master device whose location has been registered is in a state where you can use your mobile phone in a way that is superimposed on the train radio system. by. In other words, when a passenger receives a call, the train radio base station sends an incoming call signal to the train Mr. A is boarding, and the train radio control unit checks Mr. A's location registration and determines the number of cars in the train. The mobile phone master device determines whether to call the mobile phone and sends an incoming call signal. The following operations are the same as for normal incoming calls. Depending on the type of train, there are cases where only one or two train public telephones are provided on the train. In this case, the incoming call signal is sent directly to the mobile phone from the mobile phone wide area calling base station. A method is also used in which the owner of the mobile phone who receives this goes to the nearest public telephone, connects the mobile phone with a connection unit, and receives an incoming 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 City, 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 area. This golf course is A
He is also a member and was asked to present his membership card or mobile phone at the reception desk, so he presented his mobile phone. The receptionist was able to verify the ID (GPID) of the golf club's membership card by making a call between Mr. A's mobile phone and the mobile phone master device owned by the receptionist. I was able to instantly confirm my membership.

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. In other words, as explained in the previous chapter, it has become possible for a mobile phone to have the role of a person's ID (ii! authentication) and a ballot paper. .

PID of the mobile phone used for voting, ID used only for elections (election ID), voice print and information about the person (
Register your birth place, date of birth, domicile, family structure, etc.) On the day of voting, use your mobile phone to go to the voting place (management center) assigned to you from the designated time and place. Make a call.

Then, the management center confirms the PID and election ID.

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. In addition, defensive measures have been taken, such as the mobile phone used by Mr. and Mrs. A automatically disappears upon completion of voting, and makes 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 Kuchimokkaido region.

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 traveling through the Alps for a few days after leaving home 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 calling type 1, 2, 3, or type 4 base station, so this was from the mobile phone wide area calling type 5 base station by satellite. I could immediately tell that it was a call signal. When Mr. B looked at the display of the mobile phone, he saw the message ``Praying for your safety, Part Ando,'' and learned that it was a telegram of encouragement from Mr. Ando, who was studying at the same university as Mr. B. I was able to climb down 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 we were able to spend a very comfortable day.

vi) Omission of location registration storage operation for the mobile phone in the exchange that manages 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 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: (See Figures 11 (a) to (2)) Similarly to the above, if the exchange memory that manages the home area also stores the position information of mobile phones in multiple exchange roam areas, even if omitted, the system does not become inoperable, but operations ① and ② above are required.

vii) 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 can be used in homes, department stores, baseball stadiums, or the premises of event venues, which were previously considered technically and economically impossible. The ability to efficiently set up call routes and make and receive calls anytime, anywhere, even while walking on the road, has a huge effect in making people's social lives more convenient.

Additionally, by using mobile phones for functions other than telephone calls, for example, for personal identification (■D), credit functions, advanced functions such as IC cards, etc., it will bring great benefits to social life.

[Brief explanation of drawings]

Figures 1 and 2 (a) are block diagrams of conventional systems, Figures 2 (b) and 2 (C) are system diagrams showing examples of the routing of the conventional system, and Figure 3 (a) shows how the present invention can be installed inside a house. The configuration diagram of the mobile phone system implemented in Figure 3 (b), Figure 4 (a), (b) (
C) is a block diagram of each device constituting the system used in the present invention; Figures 5 (a), (b), and (C) are system block diagrams when the system used in the present invention is deployed nationwide; Figures (d) (e
) is a block diagram for explaining a partial configuration of the system used in the present invention, FIG. 5(f) is a diagram showing the connection between the system used in the present invention and another telephone network, and FIG. ) is a diagram for explaining the configuration of the system used in the present invention, FIGS. 5 (i) and (j) are examples of frequency allocation within the service area, and FIG. FIG. 6 is a signal format diagram showing an example of assigning personal identification information (PID) used in the present invention, and FIG. 7(a) is a diagram showing the flow of signals when making and receiving calls used in the present invention. , Figures 7(b) and (C) are diagrams showing the flow of incoming call signals in different states, and Figures 8(a) and (b).
(C) and (d) are diagrams showing an example of the configuration of the system used in the present invention, Figure 9 is a diagram showing another system configuration example of the system used in the present invention, and Figure 10 (a) is used in the present invention. Schematic diagram showing the signal flow of a call in another state of the system, FIG. 10(b)(C)
(d) is a system diagram for explaining the routing according to the present invention, FIGS. 11(a) to (2) are diagrams showing the operation flow at the time of location registration of the present invention, and FIGS. 12(a) and (b). is a block diagram in which this method is applied to a mobile terminal in another system.

Claims (2)

[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 In a mobile phone system having a function of registering specified information assigned to distinguish between each other in the type I and type i+1 exchanges that manage the home area, A wide area communication type I wireless base station is installed for a plurality of mobile phones capable of making calls and transmitting communication signals within the same service area as the service area of the type I exchange, and a wide area communication type I wireless base station is installed as the self-identification information of the plurality of mobile phones. Self-identification information given to the I-type exchange and I-1 type exchange is included, so that if the calling party is located in the area managed by the I-type exchange, there is a risk of an incoming call. When the mobile phone does not respond to an incoming call signal from the mobile phone parent device that has registered its location, the Type I wireless base station makes a wide area call and calls the mobile phone parent device within the service area within a certain period of time. When a response signal is sent back to the type I exchange through the equipment or other transmission means, the response signal is sent back to the type 1. A call path setting method in a mobile phone system, characterized in that a call path is established between either one of the mobile phone and the mobile phone and between the mobile phone parent device and the mobile phone. (2) 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 said 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 A mobile phone system having a function of registering specified information assigned to distinguish between the mobile phones in the I-th and i+1-th type exchanges that manage the home area and the service area in which the mobile phone is currently located. A wide area communication type I wireless base station is installed for a plurality of mobile phones connected to the type I exchange and capable of calling and transmitting communication signals within the same service area of the type I exchange, As the self-identification information of the plurality of mobile phones, the self-identification information given correspondingly to the type I exchange and the type i-1 exchange is included, and when the calling side is in the area managed by the type I exchange, If there is an incoming call when the mobile phone is located at the same location, and the mobile phone does not respond to the incoming call signal from the mobile phone master device that has registered its location, a wide area call is made from the type I wireless base station, and a certain number of calls are made. If a response signal is returned to the type i exchange via the mobile phone master device or other transmission means within the service area, the type i or i-1, i-2, etc. . . . A communication path in a mobile phone system, characterized in that the communication path is configured to be set between any one of the type 1 wireless base stations and the mobile phone, and between the mobile phone parent device and the mobile phone. Setting method.