JPS63287122A - Routing system in portable telephone system - Google Patents

Abstract

PURPOSE:To attain economical routing even when a calling party goes anywhere by allowing an exchange of each hierarchy belonging to an unregistered area to inform path selection information to a caller exchange when a portable telephone set to be called moves to the unregistered area. CONSTITUTION:Suppose that a caller telephone set B calls a portable telephone set A being a called party moving from its own home area into an unregistered area, then the telephone set A is called by utilizing a broad band call base station KRC-V. When the telephone set A replies, the path selection information to set a channel is informed to the caller exchange 1 from the portable master telephone set T and exchange systems 6-9 of the area of the called party A for channel setting. The exchanging 1 receiving the notice sets a channel between the caller B and the called party set A through a path including a multi-stage bypass relaying including path 2' 3' 33 34 35 36.

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 routing methods in systems.

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 easily make calls from a car phone if you are in a car, a train public phone if you are on a Shinkansen, and a domestic ship phone while on board a ship, the following still exist: This is because of the following reasons.

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

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

That is, if you want to make a call while you are out, you can do so from a nearby public telephone, but you do not know when or if you will receive a call at a location other than your home or office. 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, in addition to being able to make emergency calls more easily and quickly than the current system, it would be even more convenient if mobile phones could be used for credit (credit function) or as a substitute for certificates, as described below. Dew.

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

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

The first is a proposal to provide a "personal telephone service" (IEICE Circuit and Information Study Group Material 1N52-21), and the system based on this concept (called the PID concept) is as follows. It is.

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. The PID written on this PID card is shared even when a terminal (the terminal number is SID) is used with a landline telephone, a car telephone, two train telephones, etc., and is made public by putting it in a telephone number book, 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, PF, is installed in the communication network to store subscriber information (SID during subscriber registration, billing information, etc.) corresponding to the PID, and the file is accessed and read from each terminal. A connection control function is provided to set up a line between calling and receiving terminals based on the receiving SID.

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, it is possible for the originating subscriber to make a direct and immediate call without knowing the whereabouts of the terminating subscriber.

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

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

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

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

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

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

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

In the simple Aloha system with the basic configuration shown in FIG. 2(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 provided with means for encoding and automatically transmitting a subscriber number different from the subscriber line number of the subscriber line,
Each exchange is equipped with a means for decoding to which exchange the cordless telephone belongs from the subscriber address of the cordless telephone, and transmitting the location information and billing summary information of the cordless telephone to the exchange to which the cordless telephone belongs. The above-mentioned switching equipment is characterized in that it is equipped with means for transferring incoming calls or for calculating charges based on the above-mentioned information.

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

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. (see JP-A-58-151136),
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 6m.
This is because the level is as low as 1/800 of W.

If the transmission power of the cordless telephone is increased to about 500 MHz, it will be possible to receive the base station and make calls. However, this increases the burden on the battery, significantly reduces the length of time that cordless telephones can be carried, and increases the size of the cordless telephone as the battery capacity increases, making it inconvenient to carry and impractical. It is positioned as a variation of the 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. . In general, there are multiple connection routes in a complex network, and selecting one route among them is called routing (RHttn
It is said that g).

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 path are collectively called a route) are busy, the second route is busy. When the second route line for line selection 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 Alternate 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 sequentially selected from the originating station to the nearest exchange on a multistage 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)
Due to the necessity of performing the routing alone, the traffic conditions at other exchanges were not fully understood, and optimal routing settings could not be made.

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

The radio section is equipped with multi-channel access technology, interference detection function, etc., and is equipped with various functions to ensure high frequency usage efficiency and high-quality calls. Further, the call signal is analog or digitally modulated by the modulator and transmitted as a modulated wave with high privacy to the opposing mobile phone master device through space. Furthermore, the demodulator demodulates the audio signal by a process reverse to that of the modulator and transmits it to the receiver. Transmission power is 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 the ID attached 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 unauthorized borrowing or theft from being used by a third party, the device may be provided with a password and a disconnection function.

A fixed telephone is paired with a mobile telephone, and has almost the same functions as the cordless telephone fixed 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 the block configuration of the fixed telephone.

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

This can be easily realized if optical fiber cables or the like are used for subscriber lines. A fixed-line telephone may be housed in the same housing as a mobile telephone master device, which will be described below. A fixed telephone has self-identification information SID that is different from other fixed telephones, similar to the PID. It is sometimes abbreviated as SID. In the main text, the landline phone in the home area of the mobile phone 41PID is SID, -H or simply SID,
Sometimes it is written as A landline telephone is a telephone terminal connected by wire to a PBX or local telephone exchange (hereinafter referred to as a Type 1 exchange), and in addition to the functions normally used as a telephone,
It has the additional functions shown below.

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

■ Alternate call receiving function when a call cannot be received to the mobile phone ■ Call transfer function to the mobile phone Mobile phone master device Opposes the aforementioned mobile phone and makes and receives 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. The configuration diagram of the mobile phone parent device is shown in FIG. 4 (0)), and is sometimes abbreviated as SID. SID the mobile phone master device in the home area
, is sometimes written.

It is a phone used by ordinary telephone subscribers, not a mobile phone.

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 flooring dominated by X, or to the hardware itself that implements the telephone exchange function.In the text, it may be included in 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, it identifies the voice dialing signal sent from the mobile phone (the signal generated by voice as 1, 2, san, etc. instead of the dial signal 1, 2, 9, 0) and converts it into numbers. AI (Artificial Intelligence)
It has the following functions. It usually refers to a switch housed in a local telephone exchange, and when it refers to an area with a spatial floor, such as telephones and subscriber lines controlled by the station, or the hardware itself that realizes the telephone exchange function. Also used.

It is called a terminal station in the NTT telephone network (see FIG. 5(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 plate exchanger (KTC-III) A second type exchanger located above multiple type 2 exchangers 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 a switch housed in the central office located in the prefectural capital city (70 cities), and KTC-III
It may be abbreviated as.

Tama ↓ Seimata Kanron (KTC-IV) Calls between third-class exchanges that are located above multiple third-class exchanges and that are controlled by themselves, including areas that aggregate several central office areas, and that are normally received from other than the own. In addition to relaying and exchanging functions for making and receiving telephone calls, it also processes subscriber information for mobile phones (location registration reception, modification, deletion functions, etc.) and makes and receives telephone calls. It is also used to refer to 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=IT network, it means a switch housed in a central office, and is sometimes abbreviated as KTC-IV.

In our country, NTTm has Tokyo 9 Nagoya nationwide.

There are eight locations including Osaka.

[KTC-V] Located above multiple Type 4 exchanges, it has the functions of relaying and exchanging calls from the 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 opposite a mobile phone master device as a communication partner, but in order to make it possible to receive calls in places with poor radio wave propagation or where there is no mobile phone master device nearby, etc. It is a base station. That is, by using the powerful radio waves transmitted from the above-mentioned base stations, even basements and underground malls in cities can be covered. The size of 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, wide-area calls are made using the area managed by the Nth type exchange as a service area, and the second or higher type wireless base stations may share facilities with the first type wireless base stations.

Type 4 radio base stations are also used to receive calls from mobile phones mounted in moving objects such as automobiles, trains, airplanes, etc. 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 under the control of the n-th type exchange that has an interface with each of them.

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

Wireless channel (wireless channel) 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 call channel (call line!a). 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 (fist') A channel that communicates with the 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 mobile phone master device or a mobile phone wide area paging type i wireless base station 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 i-th type exchange and the j-th type exchange (i = 1.2゜3,...-n, J = 1
+ 2+ 3+ -.-n), a control signal transmission path between a mobile phone wide area calling type i wireless base station that exchanges a control signal with an i type exchange, etc. 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.

The present invention uses a wireless transmission channel. The communication channel (speech line) is mainly between the mobile phone and the mobile phone master device, but there are cases where the control channel transmitted from the mobile phone wide area paging type 1 radio base station is shared as the communication channel. In addition, between mobile phone master equipment and type 1 exchanges that use wired systems as the main transmission path, and between type i exchanges and type i exchanges (s
-1+ 213・-n + J ”” L 2+・・
-, +n) and communication with a computer, etc. used in the mobile phone system in the verification 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 about mobile phone users (incoming and outgoing calls 9 location registration 9 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 section, (2) billing information storage section, and (2) special information storage section for each subscriber. It may be abbreviated as MEM or memory section.

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

Home area is a place where a mobile phone is permanently installed and refers to an area with a radius of 25 meters where it can communicate with a mobile phone parent device in a parent-child relationship. 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
Usually used by mobile phones used in areas other than the home area and 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) The area indicated by the broken line in FIG. 8(a) indicates the first type roam area.

General residential mobile phones are often used in this area.

It is sometimes referred to as the KTC-I 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 written as KTC-II circle 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 roam 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 KTC-IV circle area.

The area surrounded by the broken line in FIG. 8(b) indicates the fourth type loam area. If it is installed on a car, aircraft, or ship and registers its location, it is 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 the case of Japan, this area covers all of Japan (excluding Type 4 ROHM areas), and mobile phone owners in Japan are also assumed to be in this area when they use it 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 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 perform the intended communication functions.

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

``-mode ↑ zone'' 8 As a construction worker, a mobile phone master device is installed inside or on an external wall of a private residence in a residential area in a city or rural area, and a wireless zone is constructed between this and nearby mobile phones. Tell me the case. It is suitable when the call traffic is usually not very large and the area density is uniform. Control and signal transmission from the mobile phone master device are limited to only when necessary, and at all times only the receiver is operating (standby) on a predetermined control channel. However, even in residential areas, when there is a lot of call traffic for a specific mobile phone master device, or when an accident or disaster occurs, call traffic may temporarily and suddenly increase. The system is configured so that it can be transferred to the business district mode mobile phone system described later.

Continuous Location Registration Request mode refers to the mode in which a mobile phone sends 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-1 of your current location, or when you want to reliably receive incoming calls.

Business '-Mode 'B1: Mainly in areas where people are concentrated, such as business districts, downtown areas, event venues, large markets, and large-scale business offices in urban areas, where call traffic is large and fluctuates widely. This refers to a case where a mobile phone master device is installed inside and outside a building as well as in public facilities such as utility poles, walls of public buildings, etc., 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 mobile phone, 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.

This refers to cases in which a high-charge type mobile phone in mobile phone 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 car phones.

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

Mobile phone system 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.

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

3.4 (Objective of the Invention) The present invention is a new system that can be approximated as the ultimate mobile phone that can be realized in the relatively near future by a new concept for the mobile phone system that is partially satisfied as explained above. This is to realize a routing method in a specific mobile phone system.

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 (KTC-I) is on the lower left side of Figure 3 (a).
This is connected by a subscriber line to the mobile phone master device in the house on the lower right side of the figure. A mobile phone master device, etc., which is the main component of the present invention, is installed in a house, and this and the mobile phone are connected wirelessly, and the fixed phone is connected by wire. Regarding the former, the upper part of Figure 3 also shows the main components of the mobile phone master device and the inside of the mobile phone, and the frequency band used may be any frequency as long as it is suitable for mobile communication, but here, for the time being, Like NTT cordless phones, it operates in the 250/400MHz band.

FIG. 3('b) is a block diagram showing the configuration of a fixed telephone. In the figure, the mobile phone parent device is a hybrid H
are connected on the left side. 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;
and a talkie section for service in case of absence, and an S to enable dialing signals to be sent with a single touch when making a call.
ID and PID storage units are 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. In addition, the information (SID, PID) of the location registration destination when absent
) for incoming call forwarding. 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 unit 2 operates, the ringing bell B rings, and when the user picks up the handset, the user can hear the other party's voice from the handset R, and the call begins. The received call information is stored in the received 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 the mobile phone PID or landline phone (SIDυ), it will not work. Considering the amount of traffic, the possibility that the opposing mobile phone master device is communicating with another (third party) mobile phone is small, but it does occur with a certain probability. There is no problem if there are two or more lines, but in the introduction period there may be cases where there is only one line, in which case a message indicating that a call cannot be made will be displayed on the display unit 10 of the landline phone. Since the signal is sent from the subscriber line interface circuit in the mobile phone master device shown in FIG. 3(a), it is received by the signal receiving section 2 of the fixed telephone and displayed on the display section IO according to instructions from the control section. It is done by doing.

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, if a mobile phone user moves from one place to another by about 20 to 25+a, a new communication path will be established with a new mobile phone master device installed at that location and the conversation will continue. If the user continues the call at the same location even though he/she is aware that the call end request signal is coming, the timer 1- 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 in FIG. 4(b) is not only used to obtain billing information when a call is made from a mobile phone, but also works in conjunction with the control signal generator 1-6 to notify the mobile phone user during a call. Used to create timing for sending a call termination request. In addition, if the mobile phone user moves during a call, the mutual distance between the mobile phone and the mobile phone's parent device increases, the electric field input to the mobile phone decreases, and the quality of the call deteriorates ( This detection is carried out by the electric field level determination section 1-9.
The channel switching request (performed by) from the control signal generator 1-6
It has a function that sends a signal (or disconnection) to the mobile phone to search for the nearest new mobile phone master 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.
The transmission mode is changed from the necessary transmission mode to the constant transmission mode, or vice versa, according to instructions from the call traffic monitor section (see FIG. 5(a)) of the exchange. For example, if the SWI of 1-10 sets the mode for transmitting downlink control signals when necessary, it is possible to change to the constant transmission mode by switching SW to 2. As already explained in the definition, a residential area (within a residence)
When installed in a business district, the always-on transmission mode is the normal mode; on the other hand, when the system is 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 measurement unit is built into the mobile phone master device (Fig. 4 (b) 1-11) and is operated to operate 5WI-10 in 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 = t l 21314 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 wireless 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 control unit also instructs the transmission frequency synthesizer to generate a predetermined call (or control) frequency, as well as the roam area call information storage unit and self-ID.
(PID) Controls the 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 a 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, it will not be able to register its location unless it makes a call or sends a location registration request signal. No changes will be made 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.

Note that even if the mobile phone is set to continuous location registration request mode, if it enters the application area of the business district mode mobile phone system, it will automatically start continuously after capturing the downlink control 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 keep the VIP-PID in 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 simultaneously, the ICH will be assigned to the mobile phone in the home area (H), so the above explanation is unnecessary.

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 opposite STD 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 TD, town ID, etc., which will be described later, are sent back in numbers and can be displayed to confirm whether or not the call is possible. 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).

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

iii) Each mobile phone is given a PID (self-identification number) that is different from other mobile devices or terminals in other systems, and when a call is made or a request is received from the mobile phone master device, the mobile phone automatically identifies itself. The PID signal is sent.

(The PID of the mobile phone is PID,) iv) When a call is made outside the home area, the roam area SI sent from the mobile phone parent device facing the other side and making the call.
D (terminal identification number) is stored in the "Roam area call information memory section" of your mobile phone.

(2) When the mobile phone is turned on, it automatically transmits its own PID 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 as described in the definition of the term (mobile phones and landline telephones).

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 section MEM. From now on, MEM will be installed in high-level exchanges as shown in the diagram.
The subscriber information storage units installed at each of these levels communicate with each other for mobile phone location registration requests, billing information, etc., as will be described later, and have a distributed storage function, which is a feature of the present invention.

3.5.2 Constituent principles of the present invention and their rationale 1 In this section, the method of arranging the subscriber information storage units MEM distributed in the exchanges at each level will be compared with the centralized arrangement method of the prior art. The advantages thereof will be described, and the method for assigning personal identification information PID will be explained later.

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

3, 5.2-1 (Function of the storage unit for subscriber information (information on location registration 9 billing, etc. by PID) installed in each hierarchical exchange) i) Received from a mobile phone via a parent device, PBX, etc. It stores subscriber information and transfers the information to an upper station or lower station as necessary.

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

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

■I stand up and refuse to accept orders. 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.

■Restrictions on location registration In order to restrict calls to and from the attached mobile phone, location registration requests will be 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 the event of abnormal traffic; vi) Identifying the location registration method and type of mobile phone and determining the calling method in the case of an incoming call (distinguishing between wide-area calls, narrow-area calls, etc.) ) vi) Transmitting necessary parts of this information to a third party based on the contract with the subscriber and the third party regarding the information stored in the special information storage unit for each subscribed sound; vi) If the mobile phone is equipped with a function that allows calls to be made and received using different media services, the communication status of the communication for each type of media must be memorized; Although it is obtained through a type 1 exchange,
Send this to the first type exchange subscriber information storage unit that controls the home area of the mobile phone via another exchange, etc.; 3.5.2-2 (Function of subscriber information storage section of mobile phone master device) i) Mobile phone master device ( SID, 1) Captures the downlink control signal transmitted from the mobile phone and stores the PID of the mobile phone that has requested location registration in the PID signal storage unit within the device itself, and also transmits the PID to the opposite fixed phone and KTC-1. Notify that the mobile phone is currently registering its location with SIDn.

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.

1ti) During parent-child communication, the PTD 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.

ii) The self-ID storage section stores self-PID information, personal identification numbers, and ID information necessary for credit and various certificates.

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 in the wireless line of the mobile phone master device and mobile phone organization applied to the mobile phone system of the present invention usually has multiple 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, if the power of the mobile phone master device S ID is turned on, this is detected by the nearby mobile phone PID.
Since it is necessary to notify the terminals such as +, etc., the downlink control signal is sent 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, a mobile phone master device is also installed nearby, and if the power is turned on at the same time, the control channels used are the same, so interference will occur, 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, and 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 1710, the number of calls, etc. is controlled 10 times/day, and the number of repetition zones is 25.The number n of mobile phones that can be accommodated in the parent device is given by the following formula. .

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 the calculation. (Actually, even in residential areas, other master devices are installed in public places such as utility poles, so the above conditions are further relaxed.) Furthermore, there is no problem with the amount of call traffic regarding the mobile phone system in residential area mode. It is necessary to consider whether or not. In this case, the design conditions are: call loss rate: 0.03%; number of call channels: 501; number of calls: 1o times; 7 days.

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. Further, in the case of a mobile phone in the continuous location registration request mode, the signal transmitted from the mobile phone is received by the mobile phone master device, so that a more reliable location registration operation is possible.

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 at the same time sends a location registration request signal to 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 telephone system in the residential area mode described above, it has been found that one control channel is sufficient for 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, the PID of the mobile phone in the roam area.

A case in which a mobile phone enters the communicable area with the mobile phone master device S■Dl (case ■) will be explained. PT near SID
When turning on the power to D, the operation is almost the same as that described when turning on the power to PID, so we will omit it, and assume that it comes in with the power turned on. . PID2 normally uses the uplink control channel only when necessary, and SID also uses the downlink control channel only when necessary, so if this continues,
It is possible to make a call from ptDz (in this case, location registration is first performed and then a call signal is sent), but
Incoming calls cannot be performed 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 set the mobile phone to control location registration at certain time intervals. I[ICH number I is used to issue a location registration request signal, and the mobile phone master device that receives this inspects the content of this signal and, if it is a PID that is not stored in its own memory, stores it. And S ID for KTC-1, +P ID
It is necessary to send two location registration signals.

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, the communication traffic becomes heavy.
-11, the mobile phone master device is equipped with a circuit that measures the amount of call traffic circulating within the device itself, and when the amount of traffic exceeds a certain amount, the switch SWI-IO is set to 2. In the same state, a function is provided to switch the control signal transmitted from the mobile phone master device from transmission when necessary to constant transmission. 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 2 (business area mode) in response to a switching signal from KTC-1. 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 is used in the business district mode, which will be described in detail below, 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? I
The usage of the CH is different from the above-described residential area mode in that the downlink control channel is constantly transmitting control signals from each mobile phone master device.

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, RC has the function of managing the control channel and switching the call path when the mobile phone moves during a call and changes the mobile phone parent device with which it communicates with the other person, but the call path used by each mobile phone parent device is 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 Figure 5 (i) (the service area of each parent device is a zone surrounded by a hexagon (-25 m)). )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 l
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. Assume that the mobile phone master device in zone 13 is powered on at the next time. 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 it is assumed that the software in the device is activated and the control channel number used in zone 13 is set to Nα13 for convenience.

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 CH No. 13 is in use, 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 Nα14.

Zones 1, 2, 3 below.・-・-・12.15.16.
It is assumed that the power of the mobile phone master devices installed at .--24.degree. 25 is 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.

As for the control CH numbers used in these zones, for example, in the 26 zone, use Na, 1.27 for Na, 2.28 for Na3, and the following use the same number as the remaining number after subtracting 25 from the zone number. I decided to. Then control@CH number Nα1 is zone 1 and zone 26
It will be used in However, there is a considerable physical distance between zone 1 and zone 26, and the control signals sent from the parent device are attenuated to the extent that they do not interfere with other control signals due to radio wave propagation characteristics (by the way, NTT's automobile The telephone has 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 channels. That is, if the relative distance between the 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 given. 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 a communication channel specified for a certain mobile phone, and if interference occurs, It has the ability to immediately switch to and add another call channel.

Next, the operation for location registration from a mobile phone will be explained. In FIG. 5(i), zone 1 is a mobile phone master device (S
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 CH number, etc. The mobile phone PIDl that received this sends the corresponding uplink control C using control channel number 1.
A location registration request signal is sent using H. This signal has P
It includes ID, channel number, etc. The master device that receives this signal stores the P I in the subscriber information storage section within itself.
D. Stores the signal and transmits PID to the first type exchange
, reports that there was a location registration request from. This signal has PID, +STD.

It is included. Upon receiving this signal, KTC-1-1 memorizes that the location of PID is registered in SID in the location registration information storage section of its own subscriber information storage section, and at the same time completes the location registration for SID. Report what you did. Upon receiving this report, SIDI inspects the signal contents and uses a downlink control signal to notify that PID and destination location registration has been completed.

With the above operations, the location registration of PID 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 (Continuing to use the control channel is also possible.) The mobile phone parent device operates the synthesizer in its own device and constantly uses the communication channel that is not in use in the vicinity.
It has a function that makes it possible to memorize H. That is, the cordless mode call CH33~150.151~ in Table 1
Out of 200 unused channels, 51.151 are allocated, and 51 is allocated for calls only, and 151 is allocated for data communication. Therefore, upon receiving the downlink control signal specifying this CH, the mobile phone operates its synthesizer according to instructions from the control unit, sets a channel to the calling CHN 1151 or 151, and sends out a dial signal.

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

Note that the designation of the call CH explained above is based on Nα5 in Table 1.
It was a dedicated channel for calls from 1 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.I.
Suppose there is a call from D and the situation is as described above. I
PID to use ICHII number as a call channel.

Sends a command signal to. The mobile phone that receives this command signal sends out a dial signal using control number 0811 as the call CH, 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 how to control mobile phone wireless lines in places such as Tokyo and Osaka where extremely large numbers of people gather.

In this case, even if the above-mentioned mobile phone system in the business district mode is applied, it is assumed that the call traffic cannot be carried out satisfactorily due to the large volume of call traffic. 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).
” = 6.251! II It becomes possible to process more than 6 times the call traffic. Technically speaking, the transmission power of the parent device can be kept to 1 mW of the normal 1710, and the downlink control signal can be sent to the mobile phone. Therefore, it is sufficient to provide a transmission power control function that operates only in a small zone that can be reduced to the same level as each parent, and this is a 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. In addition, 1. 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 120 Hx 2 =24 CH, 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(b), 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) has a simple system and is suitable for use in areas with low call traffic, such as residential areas, 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. Although Figure 5 (to) shows the case where the RC is installed separately from the KTC-T, it may also be installed in the same location as the KTC-1. One location may be installed in the same village, and a plurality of these may be accommodated in KTC-1.

Figure 5 (Control C with RC in (to)) (The control signal from the controller to the call channel controller means that it is possible to change the call channel due to the movement of the mobile phone or to change the channel due to interference. There is.

Finally, I will explain ■. FIG. 5(c) 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 walk with their PID turned on near the boundary 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 channel that has been known so far deteriorates, and when this value falls below a certain value, the S/N of the control channel that has been known so far 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 point F'ID, and thereafter uses the control channel assigned as the mobile phone system in the residential area mode. A location registration request signal is sent using the upstream channel (channel number 1 in Table 1).

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 service area in a business area mode. In this case, if the mobile phone is in the location registration continuous request mode, the mobile phone is continuously transmitting its own PTD on the uplink control channel of channel Nα1 in Table 1, and the mobile phone cannot be obtained until now due to movement of the mobile phone. A response using the downlink channel of the control channel Nα1 from the opposite mobile phone master device in the residential area mode cannot be obtained. In this state, the mobile phone automatically stops continuous transmission for location registration after a certain timing,
Enter business district mode and begin a search to capture the downlink control channel being used. That is, a cyclic search of 3 to 32 is performed for the cordless telephone mode control channels shown in Table 1. As a result, acquisition is possible and the channel goes into a standby state.

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 exactly the same as those described above.

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, a calling signal is sent on the upstream channel of control channel Nα1 in Table 1, but since there is no response from the nearest mobile phone master device, the mobile phone is used in business district mode after a certain period of time. It has a function to automatically start acquiring downlink control channels.

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, we will use a mobile phone system in business district mode, and we will use constant downlink control CT (CT) from the mobile phone master device.
It is assumed that the control signal is flowing using . 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 PIDI 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 SD receives this and stores it in its own memory, and also sends it to the P to the first type exchange KTC-I-1.
Sends an ID+ location registration request signal. The subscriber information storage unit of KTC-1-1 that received this stores in the location registration storage unit, which is a part of this configuration, that P'rD+ is registered in the mobile phone master device SID of the home area. do. When this is completed, a location registration completion signal addressed to the mobile phone parent device is sent. The SID that received this signal,
compares the PID in the signal and determines the PID of the mobile phone.
D. Send destination location registration completion signal. P who received this
TD inspects the signal content and stores SID.

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

ii) Location Registration in Type 1 Roam Area Next, the operational flow of location registration in the 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 SID in the same way as described above. The received SID+ signal is inspected by the mobile phone facing the SIDt (
The mobile phone recognizes that it is a third party's mobile phone in the roaming area rather than the PID, and stores the PID in its own memory and sends a location registration request signal to KTC-I-1.

Upon receiving this, the MEM of KTC-I-1 changes the location registration from SID+ to SIDt and stores it, as well as SID.

Sends a destination completion signal. The following operations proceed in exactly the same manner as in FIG. 11(a), and the location registration in SID of PID is completed.

Next, a 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 downlink control CH from SID, but as the user walks, the input electric field value decreases and eventually 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, S finds that the input electric field value of the downlink control CH transmitted from the mobile phone master device S I D3 satisfies a certain standard, and stores it in its own memory as a location registration.
Change it to IDi and rewrite it to SID. Also 5ID3
A location registration request signal is sent to the location registration request signal. Upon receiving this signal, the mobile phone master device 5ID3 stores the PID and sends a location registration request signal to KTC-1-1. The following operation is similar to that shown in FIG. 11(b).

1ii) Location Registration in Type 2 Roam Area The operation flow will be explained using FIG. 11(d). In the figure, the operation from turning on the power of the mobile phone PID to receiving a signal to the KTC-1-2 is exactly the same as in FIG. 11(b) 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. KTC- which manages D+
A location registration request signal is sent to If-1. Upon receiving this, the MEM of KTC-II-1 inspects the signal content, stores it in the white position registration storage unit, and then informs KTC-1-1, which manages pID+, that the PID is KTC-1-2. Request to remember that the location is registered in 5ID4 managed by . Upon receiving this signal, KTC-1-1 inspects the signal content and stores it in its own location registration memory.
Report to TC-11-1 that location registration has been completed. Upon receiving this signal, KTC-U-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 operation is shown in Figure 11 (C)
Following exactly the same process as above, 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-I[-3 is shown in Figure 11 (d
) is exactly the same as

Now, the location registration request signal sent to KTC-11-3 is inspected and stored in the MEM of KTC-I[-3. Further, as a result of the inspection, it is found that the PID is not a mobile phone managed by the KTC-II-3, so a location registration request signal is sent to the upper exchange KTC-Ill-1. Upon receiving this signal, KTC-m-1 recognizes that the PID+ is managed by its own exchange, and
Store in own MEM. It also sends a location registration request signal to KTC-II-1. The following operation is shown in Figure 11 (d
), the location registration of PID to SID 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 (
g) shows the operation flow in this case. The same figure and Figure 11 (
The only difference from FIG. 11(f) is that a type 5 exchange is involved, and the other operations are exactly the same as FIG. 11(f).

In addition, in the above explanation, KTC in FIG. 11(e)
-If-3, KTC-If-4 in Figure 11(f)
and KTC-111-4, KTC-11-5, KTC-111-5, and KTC in Figure 11 ((to)
-It is not necessarily necessary to store the location registration information of PIDI that requests location registration in the MEM installed in each of the IV-5s, and even if omitted, it will not impede the effects of the present invention in any way. isn't it. However, by storing location registration information in these exchanges, which may seem redundant, PID.

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
How does ID change its location registration to the home area? In practice, a case like this occurs when a person living in Tokyo travels to Hokkaido with a mobile phone, and during the implementation period, the mobile phone is changed to the home area. 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. It is as if the flow is completely opposite to the flow of location registration operation in the type 5 roam area shown in Figure 11 (river).
ID+, KTCn 5 (n=1+ 2+
3t 4+ 5) + KTC-n-1 (n=1,
In 2.3.4.5), all MEMs are registered with PID, and the location registration is with SID. This operation is to change (delete). In other words, in the storage section of the SID, the PID, which is registered as the PID of the 5th type roam area, is changed to the home area, and the PID for KTC-1-1 is changed.
I inform SID that it is requesting location registration. KTC-1-1 searches for the MEM, changes its own MEM, and requests KTC-U-1 to change (delete) the location registration. Upon receiving this signal, KTC-n-1 erases the location registration information related to its own MEM's PID, and
It also requests KTC-[[-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 tsunami 2 white wind 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,
When the emergency medical center receives this, the current location information of the mobile phone is transferred from KTC-I, and an ambulance can be sent directly to the scene. Currently, elderly people are given something called an ``emergency pendant.'' In case of an emergency, when you pull the pendant at home, SO8 radio waves are emitted from the radio installed inside the pendant, and the signal received is sent to the emergency medical center. A system is in use in which emergency services are dispatched to the area and an ambulance is dispatched to the area, but the present invention is equivalent to a highly functional version of this system that expands the service area to a nationwide scale. Similarly, if there is a fire in your area, you can make an emergency call by e.g.
Just dial 19 and say ``Fire J'' (this doesn't necessarily have to be said either, it can be something like a dial signal),
Unlike the current system, there is no need to provide detailed explanations of place names, lot numbers, and the state of nearby buildings when people are mentally disturbed. At the firefighting center, the registered location of the caller can be displayed on the electronic display board, allowing the caller to be immediately dispatched to the fire scene.

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.

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

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 impaired, the n+1-th type exchange takes over the storage. If the higher-level exchange is also unable to store the information due to a failure or the like, then the higher-level exchange will attempt to store the data in the MEM of the fifth-class exchange. If the MEM of the 5th type exchange cannot be stored, location registration is executed to the mobile phone master device or fixed telephone (SID) in the home area.

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

Now, with the above explanation, the nth type exchange (n ” = 1 +
It has become clear how important the subscriber information storage units installed in 2+3, 4 and 5) play. 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. Registration of the current location as the phone moves needs to be performed at all times to ensure the availability of calls at all times.Also, even if this is performed, it is much more efficient and economical than conventional techniques, and is less expensive for the user. It will be explained in detail below that it is a highly rational method that follows human habits.

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

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

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

The above situation is not limited to businessmen.

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

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

From the above circumstances, it is understood that the frequency of use of the subscriber information storage section (location registration storage section) of the upper exchange, and therefore the frequency of signal transmission required for these registrations, is extremely low. Therefore, considering the national character of our country (this also applies to 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 the daily behavior of the general public in detail with reference to literature (National Travel Dynamics Survey Report, compiled by the Prime Minister's Office, October 1988). That is, hereinafter, based on this report, the amount of traffic in which mobile phone owners are registered in the storage units of the first to fifth type exchanges of the present invention will be calculated.

a) Types of travel, travel experience rate, and number of trips in 1930
In the one year period from September 1955 to August 1956, 66.
0% are traveling overnight. (Table 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 0.180 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%. Additionally, the average number of overseas travel days per person per year is 8.6 days.

d) Regarding day trip tourism and recreation 1981.
As a result of surveying day-trip tourism and recreation in winter and summer during the two months of February and July and August, 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" 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.

In addition to the memory capacity of the 5th type exchange, location registration is required when moving between 4th type roam areas. This applies, for example, when a user residing in Tokyo travels to Hokkaido, and these statistics can be obtained from Table 2 using the following formula.

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
Memory will be used for X4.92=3.2 days.

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 mobile phone is as follows.

Traffic amount (0,03+1.2) x 2 =2.4
6 Memory capacity 0.248 x 3.873-4.11
The traffic and memory amount using the Type 5 wireless base station 3b for 6 days was ignored because it was difficult to calculate and the actual amount was estimated to be small.

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

For the former, 0.4903 times per hour per mobile phone x 0.66 x 4.92 days = 1.592 days.As for the latter, the calculation results are 1.456 times per day.

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 you add this, you will get traffic! (0,4903+1.456+123
) X 2=6.35 (times) Memory capacity 1.592+1.456+4.116=
7.164 (Sun), or 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 type 3 to type 1 exchanges, such as type 3 exchanges, as they are 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. We will roughly estimate the amount of traffic and memory that will be required if we adopt this method.

■ Traffic As explained in points i) to iii), all the location registration 1 billing information, etc. associated with the movement of a mobile phone must be transmitted to a storage unit located in one location nationwide, which is a huge problem. reach a certain amount. In particular, billing information is transmitted immediately after a user ends a call (otherwise, memory would be required and the effect of centralized placement would not be achieved). This will require an increase in line capacity by this amount. On the other hand, in the present invention, it is not necessary to send billing information immediately after a call, but it is sufficient to send the billing information to KTC-I in one day, one week, or one month at a time. etc., the benefits are great.

■Amount of memory Considering the Japanese association, if we compare the installation method of the distributed subscriber information storage section of the present invention with the method of installing it centrally at one place nationwide like the conventional technology, the amount of memory will be smaller in the case of centralized installation. It is clear that the total amount will decrease. 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, Therefore, 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 required in the case of centralized arrangement? Then, since the memory amount of the 5th to 4th type exchanges is extremely small, the memory amount of the 2nd to 3rd type exchanges is compared with the memory amount of the centralized arrangement, and the distributed method is centralized M.

The total memory capacity of type 2 and type 3 exchanges in the country is set as M t and M s, respectively. Actual M 2 , M
Although the value of 3 depends on the design concept, that is, the margin technique for the busiest time, the above value is estimated to be 2 to 3.

However, the price of hardware used in storage devices has been getting cheaper in recent years, so the disadvantage of this method is not that great (in fact, the advantage in terms of traffic volume is enormous).

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

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

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

-1 - It is possible to identify the type 5 roam area (this is actually the most important feature of the PID assignment method of the present invention) ■ The 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 (for example, type 1). The switch is stored in the subscriber information storage section of the switch.
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; l) The area where calls can be made or received should be limited; ii) The time and minute of calls made or received should be able to be assigned. iii) Limiting the available time in a day for making or receiving calls; iv) Availability of additional services such as conference calls ■) Whether or not there is a landline phone compatible with mobile phones in the home area vi) (vi) Possibility of superimposition with other mobile communication systems; (vii) Possibility of non-telephone (non-voice) services; 1x) PID assignment methods that have specific rules The first part explains that PIDs can be called all at once and the PID configuration applied to the present invention.
First, the number of digits in PID will be explained.

In the case of Japan, the population is about 120 million, so it is necessary to identify this number9.In other words, if we adopt a national uniform number system, xx-xxx-xxxx
It can be seen that nine digits (x=0.1, 2.-.9) are sufficient. However, since it is necessary to satisfy the conditions (1) to (2) described above for PID identification, nine digits is insufficient. Therefore, the following numbers of digits are assigned to the following various roam areas.

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

In reality, it is necessary to provide users with a PTD 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 a Type 1 roam area, Mr. 8 dials Mr. A's PID signal (PIN and service class are omitted in Figure 6). In this case, Mr. A's PID
It is necessary to dial all of the prefecture ID, city ID, town TD, and subscriber ID. If Mr. 8's telephone is managed under the same type N exchange as Mr. A, and if n = 1, then only subscriber H) dials n =
2 〃 Town ID + subscriber ID dial n = 3 〃
City TD + subscriber I [dial n = 4] Dial of 10 prefecture IDs + city ID + town ID + subscriber ID is sufficient. Further, even if n=1 and the town ID or city ID is dialed, the exchange makes the determination, so the desired call receiving operation can be performed without causing an erroneous connection or connection failure. Now, 8
The first-class exchange that manages Mr. 8's telephone receives the call signal from Mr. 8 and then starts a route selection operation to set up a communication path between Mr. A and Mr. B. That is, first, sending out a control signal is started in order to search for Mr. A's location information. After decoding Mr. A's self-identification information PID and recognizing that it is a mobile phone managed by KTC-1 in Hoya City, Tokyo, the system sends a call (control) signal to the upper exchange that manages Mr. 8's phone. It is sent out in sequence and finally reaches the subscriber information storage section of the fifth type exchange. Figure 10 etc.) is an explanatory diagram of the calling operation, and the above operation is ■
~■ is shown.

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 since Mr. A's 4th type roam area location is not registered here, the 3rd type exchange (KT-Ill-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 (KT)
Since it turns out that Mr. A's roaming area location has not been registered up to C-1-1), the incoming call signal is transferred to the first type 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 f-1 ([phase]), KTC-I [-1 to KTC-■
-1 (■), and is returned to the calling exchange KTC-1 following the path of
····■) However, when returning the location information of A, each exchange KTC-1-1, KTC-II-1, -····KT
C-IV.

KTC-V, KTC-IV, ---・-・KTC-11
In this case, each exchange has a function of adding connection route information when a communication path is set between a calling telephone and a called mobile telephone and sending the information back to the calling exchange. This information is very useful and includes the current call traffic situation known at 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 (6), KTC-1-+KTC
-11 [phase], indicates that a communication path has been established between KTC-II and KTC-1-10, and a ringback tone [phase] is sent from KTC-1 to the calling telephone.

For the called mobile phone, KTC-1-1 sends the mobile phone master device S ID! A ring tone is sent along the route (0 in the same figure).
．． 0). (Then, 5IDz searches the PID storage unit and recognizes that Mr. A's location is registered as the own mobile phone master device 5ID2, so it is the PID.

Sends a destination call signal. Here, if Mr. A hangs off, a conversation with Mr. 8 will be started.

The routing method according to the present invention as explained above aims to use the most effective route from the viewpoint of the entire telephone network, so that the side receiving the communication service can receive high quality service, and at the same time, the routing method according to the present invention This means that economical network design becomes possible. That is, in the prior art, the routing for setting up the call network was simply carried out in the calling side exchange 3 as shown in FIGS. Alternatively, there is a difference in that all exchanges involved in the transmission can implement it, and this difference greatly affects the efficient use of the network. In addition, in FIG. 10, the routing search state only from KTC-rV-1 is shown to make the drawing easier to see. That is, (13-1), (13-2
), (13-3), and (13-4) show this. These search information are added to the signal [phase] sent to the KTC-V. Such a routing search will be performed 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-1.

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. 8's dial signal, the Type 2 exchange (KTC-11-1) 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-11-1, the second type exchange searches the MEM section and finds that Mr. A's location has been registered and is managing the home area. It turns out that he is not in KTC-I-1, but in KTC-1-2. As a result, KTC-n-1 transmits the incoming call signal to KTC-n-1.
Send to C-1-2. In KTC-1-2, M E
Search for M and enter the SID and PID managed by your own exchange.
When S I recognizes that it is registering, it sends the incoming call signal to S I
Send to Ds. 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-DI-1, the third type exchange searches the MEM section, and as a result,
When Mr. A's location is registered and it becomes clear that he is in KTC-n-2 rather than KTC-II-1, which manages his home area, KTC-III-1 transmits the incoming call signal to KTC-n-2.
Send to C-n-2. In KTC-11-2, MEM
Search for the exchange KTC under the control of 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
When it recognizes that Mr. A's location is registered in ID, it sends an incoming call signal to SID3.

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-rV-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 is determined that KTC-111-2 is present instead of KTC-II[-1, KT, C-IV-1 transmits an incoming call signal to KTC-111-2. KTC-I [1-2
Then, when it searches for MEM and recognizes that PIDl is being registered in the exchange KTC-11-3 under its control, it sends an incoming call signal to KTC-11-3. The following operation is the same as performing the same operation as ① 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,
- When it is determined that the caller is at KTC-rV-2 rather than IV-1, KTC-V sends an incoming call signal to KTC-IV-2. KTC-IV-2 searches the MEM and searches for the subordinate exchange KTC-II [-3
When L'2 notices that the PID is being registered, it sends an incoming call signal to KTC-III-3. The following operation is [
This is the same as performing the same operation as 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 a function of starting an inter-channel sweep to capture a downlink control signal (a control signal transmitted from a mobile phone master device or a mobile phone wide area calling 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 in FIG. 10(b), and therefore 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 @, ■, and 0 as shown in FIG. 10(C), and finally enters the KTC-V through ■. KTC-
In ■, the mobile phone decides to make a wide area call from the Type 5 wireless base station and transmits a signal to the base station (■) Upon receiving this, the base station calls the mobile phone A using the paging radio wave (■) .A is in the suburbs of Sapporo, Hokkaido, and there are cell phone master devices on the road, but he was more than 100 meters away from the master device and was in an area where reception was not possible, but fortunately the power was turned on and this ■ At this time, the mobile phone emits a ring tone to notify Mr. A that there is an incoming call. This ringing sound is different from the cordless phone mode, and Mr. A does not understand this. The meaning was immediately understood.When Mr. A heard this, he looked at the call display and saw that the red lamp indicating that calls could not be made was lit, so he changed his location and approached the nearest mobile phone master device. The lamp has changed to blue.In this case, press the call button that sends a response signal and wait for a while.The nearest mobile phone master device that received the response signal from the mobile phone examines the content of the signal and calls Store in the device and send PI to KTC-1-2
D. Send a signal ten response signal. This is Figure 10 (C)
It is indicated by @.

KTC-1-2 examines the contents of the PID, and then sends the PID, a signal, and a signal indicating that it is a wide area call response signal (0 to ■) to the upper exchange. The Type 5 exchange confirms that the response signal is from PIDl and sends it to the Type 1 exchange KTC-1 to which the calling telephone belongs.
The location information of Mr. A is transmitted. In this case, as above, A
Switchboard KTC-1-2, which was involved in transferring his location information,
KT, C-n-2,----KTC-IV-2,K
TC-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-■ [phase] → KTC-11@
→KTC-II[@→KTC-I[-2[phase]→KTC
-1-2 is the communication path between the exchanges. Furthermore, KTC-
A ringback tone is sent from I to calling telephone B.
Also, a ring tone [shares] and @ are transmitted to the called mobile phone A, and when B picks up the handset, a conversation begins. When the call ends, the call path is opened, similar to known fixed telephone networks.

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, as shown in Figure 6, IDs containing the necessary people ( For example, after the town ID)
- All you have to do is perform a simultaneous call. Alternatively, it is possible to further subdivide and call only 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. Since the city ID, town ID, and subscriber ID are classified and given, even if the caller does not know whether the caller's mobile phone number is the postal code of the address, town ID, or subscriber ID, the caller can make a call. It is possible. In this case, the first-class exchange that received the call uses its own postal code and area ID comparison table, and if it does not remember whether it is 602, town ID (for example, 123), subscriber number (for example, 1234), or For example, #0-602-123-1 from a mobile phone owned by
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, if you know the other party's address and name (this does not necessarily have to be accurate), you can give them a more accurate number as a result of inference using KTC-I's directory assistance AT (artificial intelligence). .

For example, "Kyotoshi Kamigijiku Shimotachiuri Oomya Agartanakacho 202 Bunchinose Hajime"
If you dial by voice, "Sonokataha xxx -xx
-xxx-xxxx Death.

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

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

3.5.4 (Reason and examples of how it is possible to make calls in all areas even with weak mobile phone transmission power in urban areas) According to the long-term outlook (published by the Radio Promotion Agency, July 1983), it is predicted that the importance of mobile communications will increase in the future, and that the demand for quantitative expansion and qualitative improvement will 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 wired portion cordless.

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

■ Car phones 4.5 million (10% of vehicles) Metropolitan area 1.15 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 satellite communications 100,000 ■ Aircraft telephones 1,000 ■ Cordless telephones 7 million (10% of telephones) Metropolitan area 1.75 million (25% of the nation) ■ Pagers 6 million (5% of the population) Metropolitan area 1
500,000 (25% of the nation) Police, disaster prevention, fire department, etc. 600,000 Disaster prevention mutual radio 600,000 Various commercial use 4.8 million (4% of the population) Metropolitan area 12
00,000 (25% of the country) Personal wireless 6 million (5% of the population) Metropolitan area 15
00,000 (25% of the nation) Fishing radio 400,000 As mentioned above, Japan's mobile communications, especially land mobile radio telephones, are expected to make great progress.

The present invention relates to a mobile phone among the mobile communications described above, and this invention means a system that includes all of the above-mentioned items (1) to (2). 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 would be almost completed around 2000, the configuration of the system would be as shown in FIG. 5(a) and in FIG. That is, in FIG. 5(a), the first type exchange KTC-I-1
is the exchange that accommodates mobile phone 1 (PIDυ).KTC-I-1 has many other mobile phones (2, 3
), mobile phone master device (1,2゜3) and landline telephone (
1, 2, and 3), as well as a number of general telephones not shown in the figure. (The circles 1 to 3 indicate the communication area from one parent device.) Also, the mobile phone parent device 4 in the figure has the same electrical characteristics as the parent device in the house 1.2.3. , installed on an outdoor utility pole or a lighting pole in a park, etc., KTC-1
-1 is connected by a transmission line. 4 is used when a mobile phone owner uses it on the road or in an open space such as a park, and is installed in various places, so the mobile phone owner can make and receive calls from any location. 5 at the bottom right of FIG. 5(a) represents a large-scale building, and the circle indicated by a broken line represents a service area that can be communicated with from one mobile phone master device.
Since many mobile phones are installed in buildings, it is possible to make and receive calls using mobile phones from any location. These mobile phones and similar devices are KTC-1-1 or KTC-I.
-2 is accommodated. KTC-1-1 or KTC
-I-2 MEM indicates a subscriber information storage unit. K
TC-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-11-1) as shown in the figure. ing. In addition, the second type exchange is connected to the higher level third type exchange (KTC-111-1), the third type exchange is connected to the higher level fourth type exchange (KTC-IV-1), and the fourth type exchange is connected to the higher level type 4 exchange (KTC-IV-1). It is connected to the top class 5th type exchange (KTC-V) as shown in the diagram, and is also configured to allow the use of satellites exclusively for calling mobile phones, allowing mobile phone calls to reach every corner of Japan. A net is being built. 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 used when the mobile phone owner is in a place with poor radio wave propagation characteristics, such as an underground passage or an underground parking lot.

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

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

In this case, mobile phone owners will still need to make and receive calls in car phone mode, which will be described later, even in the year 2000, but if they accidentally or intentionally do not switch to car phone mode, the following is the operation. Explain. In this case, 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 reception becomes impossible. However, at this time, another mobile phone parent device is near the car, and the downlink control CH from this parent device should exhibit a received input electric field value sufficient to be captured by the mobile phone. Therefore,
An attempt is made to store the SID included in the downlink control channel from the new device, the CH number that is available as a call channel, etc. in the roam area call information storage section of the mobile phone, but the moving speed of the car is fast. Therefore, while the above process was not completed, the car moved to a location close to another mobile phone master device, and communication with the mobile phone master device that had already captured the downlink control channel became impossible due to a drop in the electric field. This will result in Specifically, if the speed of a car is 36 km/h, the speed is 10 m/s, and on the other hand, assuming that mobile phone master devices are installed every 25 meters on the road side, a new mobile phone master device will be installed every 2.5 seconds. This means that the mobile phone must capture the emitted downlink control '4ICH. (Difficulties increase as the vehicle speed increases.) In such a situation, even if a call is successfully set up between a parent device and the mobile phone, a call will be sent every 2.5 seconds after the call is started. This is not preferable since it becomes necessary to switch communication channels, which increases the number of ineffective parts for the operation of the system, and also increases various types of noise from the viewpoint of the communication quality of the communication channels. 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 oscillation frequency of the receiving frequency synthesizer is controlled so as to capture the downlink @CH emitted from the mobile phone wide area calling type 4 radio base station (KRC-TV) shown in FIG. 2(b). In addition, the KTC-1000 also allows the mobile phone master device to call its own mobile phone in wideband calling mode (Type 4).
Request to inform 1. Upon receiving this, KTC-1 determines that the mobile phone is in a car, and the KTC-1
- MTC, a mobile telephone exchange that manages the same area as I
(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-1→KTC-II→KTC-III→KTC-■→
It is transmitted via the MTC and the exchanges at each level.

KRC-IV has enough transmission power to cover a circle with a radius of 3 to 5 kffI like NTT's pager service, so the mobile phone can transmit data from KRC-rV without sudden fluctuations in input electric field. It becomes possible to receive the downlink control CH well.

If there is an incoming call in this state, the PID of the mobile phone is called from the KRC-IV, so that the call bell shown in FIG. 4(a) can 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 (d) shows an example of a configuration when the mobile phone 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 (T,) 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
Assume that a person approaches IB from near O while walking as shown in the same figure. In this state, the distance between the IA and the PID becomes large, and if it becomes 25 m or more, the quality of the call will deteriorate. 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 T are connected) is turned off, and SWz is turned on (the white triangle is changed to a black triangle in the figure).

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 PI D gets closer to IC from IB, the communication path is changed to change PIDI-IB to PI
It becomes possible to change to D and -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. Figure 5) shows this example. As shown in the figure, the mobile phone network and NT according to the present invention
Although it has an interface with the T telephone network at a higher exchange level, KTC-II and below are unique in that it is a completely separate network. 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, KTC-I can be used not only for mobile phones but also for ordinary telephones and pagers, as well as for KTC-■ or KTC-I.
It is a matter of course that IV can accommodate the car telephone system.

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

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

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

In the figure, each home or office is equipped with a cordless telephone master device (fixed wireless device) that has almost the same functions as NTT's current cordless telephones, and can be accessed by any mobile phone. 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 (for storing, changing, and erasing the current location information of the mobile phone).
A subscriber information storage unit) is located there.

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

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

This is reasonable in light of the 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. The total area of is 581 square kilometers, so a square with sides of 25m has 1000m x 1000m 25 x 25
n (that is, one cordless telephone exists within a square of 25 m on a side. However, in the above calculation, it was assumed that the traffic was uniform, but this is considered a reasonable assumption since the number of demands is extremely large.

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

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

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

Furthermore, 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, mutual access to terrestrial mobile communications such as a car phone is required. 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 of three times the traffic of the current car telephone system. iii) Call loss rate B=0.03 This is the same design condition as the current car phone system.

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

Based on the above assumptions, the traffic that can be handled by this mobile phone system can be calculated using the following equation. That is, a (46,0
, 03) represents the call volume that Arseno 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 repeating zones is 25, the number of subscribers accommodated per zone is 762.2 - = 30.5 (persons/25 x 25 stations), or 25 meters.
It has been shown that a square area can be used by 30 people under the above conditions of use.

Therefore, within the range of 1H, there are 48,800 (people/employment) x 58H employment) = 283,528 in the entire Tokyo ward.
00 (people/in 23 wards), that is, approximately 28 million people can use it. 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, in places where a large number of people gather, such as the aforementioned downtown areas, fairgrounds, and baseball stadiums, there is a large amount of traffic from mobile phones. It becomes necessary to install a parent device.

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

In fact, in 5 to 10 years, we will need 2 to 4 times as many channels, up to 200 channels. However, even in this case, it is within the range that is sufficiently possible under the current frequency allocation circumstances, and the practicality of this patent is not restricted in any way.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

fjli) If the PID of a mobile phone located in a roaming area is accepted, the content of the PID signal is investigated. As a result, if it is determined that the mobile phone is being used in a Type 0 ROHM area,
The current location of the mobile phone is reported to the subscriber information storage unit 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.

(ii) 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 second device. Further, FIG. 7(a) shows the flow of calls made and received between the re-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 prevalence of cordless telephones will rapidly decrease, and the mobile telephone system will become widespread in fields that were conventionally considered to be applicable areas of cordless telephones. However, in the above-mentioned [long-term outlook for radio wave use], the current system ■～■
We do not foresee the emergence of a system that includes all of
For example, since the number of cordless phones is expected to be as large as 7 million nationwide, we have already provided instructions for using the mobile phone of the present invention while walking, at home, or at an event venue.
This study assumes the distribution of parent devices within a region where cordless telephones are widely used, and clarifies the differences in usage, hardware, 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 (
"Car Telephone Radio Line Control" Research and Practical Application Report Vol. 26, No. 7, 1977, ) 3, 5.8-2 (Regarding the method of superimposing the mobile phone system with the car phone system) Now, the mobile phone system of the present invention will be explained below. 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.

That is, the fourth type exchange is connected to the mobile telephone exchange (MTC). In addition to the direct lines connecting the mobile phone exchanges, each exchange has transmission lines extending through telephone lines and control lines to the radio line control station and further to each base station. Each base station and car phone are connected wirelessly. The functions of each station making up these car telephone systems will be explained separately.

There are several types of superimposition methods.

The simplest method that does not put a burden on the car telephone system is to bring a mobile phone into the car and call the car telephone exchange (.
MTC in Figure 9) Special number (for example, ##01-XXX-
XX-XXX-XXXX, except for ##01, mobile phone P
ID, ×=0°1, 2. -・-9 is an arbitrary number. Actually, speed dialing is available and this location registration can be easily performed), and the location of the mobile phone is registered in the subscriber information memory section of the MTC. However, in this case, it is assumed that the MTC is required to add a function to accept location registration from a mobile phone.

Car phone (number YY-YYYYY, Y=0, 1.
2. The MTC subscriber information memory unit that receives the location registration from the mobile phone (any number between - and -9) registers the current location of the mobile phone (unnecessary if it has already been completed) and also registers the location of the mobile phone. Remember the reception. In addition, the MTC notifies the Type 4 exchange that controls the MTC that the mobile phone is in a state where it overlaps with the car phone system and that the location registration has been completed in the own MTC subscriber information memory section. I do. Upon receiving this notification, the 4th class exchange decodes the PID of the mobile phone and transmits subscriber information such as current location registration information of the mobile phone to the 3rd to 1st class exchanges that manage the mobile phone. and memorize each.

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

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

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

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

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

in) 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 ##σ2 in front of the other party's number, and then dial the other party's number. Thereby, the process moves to operation (v) below.

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

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

vi) After receiving the dial signal, the exchange operates in the same way as a regular telephone, calling the called party via KTC-IV, KTC-IIl, KTC-n and KTC-I. 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.

A raccoon dog 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 aPID to the type 4 exchange that manages the own exchange. The type 4 exchange that receives these signals transfers these signals via the type 5 exchange or directly to the type 4 exchange that manages the called mobile phone if there is a direct line. The fourth type exchange that receives this signal searches the subscriber information storage unit of the own exchange for the PID. As a result, the mobile phone discovers that it is superimposed on a car phone (number YY-YYYYY), and contacts the car telephone exchange that manages it to initiate a call operation.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

In this case, the car phone and the mobile phone are hybrid-coupled when viewed from the car phone mobile phone body (Figure 12), and the two are connected in parallel when viewed from the mobile phone body. Become. Therefore, it becomes necessary to modify the car phone so that the main body of the car phone has a signal sending/receiving interface with the car phone as well as a signal sending/receiving 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 7, 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 call signal interface to the car phone.

As a practical matter, it is not advantageous to implement (2) considering that mobile telephones overlap with ship telephone and aircraft telephone systems. This is because mobile phones are desired to be as light and compact as possible in consideration of portability. Therefore, the method (2) will be used, but since the car telephone system is widely used in Japan and it would not be economical to equip all car mobile phone units, it will probably be limited to certain types. Alternatively, it would be more realistic to install a separate mobile phone adapter. An example of an actual connection circuit is shown in FIG. 4(a), but a method that is introduced sequentially when the car phone hardware is updated may also be used. That is, SW in the same figure,
~SW2 is configured to interlock with each other, and is normally connected to the ■ side. When superimposing with another system, use SW
+~S W Turn z to the ■ side.

With this operation, the transmitting and receiving radio parts of the mobile phone are separated from the telephone part (the power supply is also turned off), and the mobile phone operates as a telephone part with the same functions as the telephone part 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.

Assume that the mobile phone is turned on and ready to make a call. At this time, the mobile station originating operations i) to (ii) described above are carried out. The user moves on to dialing, but only needs to dial, for example, the special number ##01 as described above. From a car phone mobile device, add (YY-YYYY) to this number.
A signal of Y+P ID) is automatically transmitted to the wireless base station. When this signal is received by the MTC, the MTC subscriber information memory unit registers the current location of the mobile phone (
(This is not necessary if it has already been completed), and the reception also stores the location registration of the mobile phone.

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

Now, after the above location registration is completed, 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 integrating mobile phones into the car phone system is a heavier burden on the car phone system than the second method, and requires modification, but it is completely free of charge for mobile phones (hardware and software operations). There is also a method that does not require any change.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. .

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

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

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

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

Although the above description has been made regarding the case where the mobile telephone according to the present invention is superimposed on a car telephone system, it can also be realized in a ship telephone system or an aircraft telephone system by applying the same method. FIG. 5 0)) or (C) shows the connection between these systems and the network configuration according to the invention. Both systems have an interface with KTC-rV.

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

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

That is, although it can be used in a cordless telephone mode in urban areas, the wireless radio wave transmission power of the mobile telephone or cordless telephone of the present invention is extremely weak at about 6 mW. Therefore, if there is an obstruction or the like in the space near the transmission, the radio wave propagation characteristics deteriorate and the quality of the call deteriorates, or in some cases, the call becomes 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 250 MHz, 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 is in standby mode (downlink control channel is being captured) in business district mode,
If the control channel of the cordless phone master device or mobile phone device cannot be captured due to a change of location, change the wireless frequency of the control channel on the mobile phone standby to the paging frequency of the pager instead of the cordless phone and wait. I will accept it. This is possible in terms of hardware, and when the noise level of the noise level detector exceeds a certain value in the mobile phone shown in Figure 4 (a), the frequency of the reception frequency synthesizer is set to a pager-type call according to instructions from the control unit. frequency. After that, the mobile phone operates in exactly the same way as a pager (portable device) of the pager type. Figure 7 et al. below shows the flow of the call receiving operation. It is assumed that a function has been added to the paging base station of the pager system so that a paging radio wave is sent when a control signal for paging a PID comes from KTC-1 in FIG. 5(C).

If the base station calls the pager in this state, the call switch is turned on (the handset hangs off). At this time, look at 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)'a device (S
ID), and sends out a calling signal using its own PID on the uplink control channel. KTC-1 receives the PrD+SID signal, finds that PID is in SID, and issues a SIDID call signal.

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 is provided with a voice service such as "You are currently being called by a pager. Please wait for a moment" from the local exchange for pagers (the first type exchange in the present invention). (Figure 7 (
(See b)) If you cannot display the call availability display on your mobile phone, walk to the first floor if you are in a basement, or near the exit stairs to the ground level if you are in an underground mall, and then check the optical call display again. Check the display, and if the call can be made, it indicates that the downlink control channel of the nearest cordless phone (or mobile phone) parent device has been captured, and the caller can be contacted by the same operation as above. It can be done. FIG. 7 (°C) is a diagram showing the above-described operation with respect to the operation 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, the wide area call type 1 wireless base (n = 1.2, 3. and 4) or the same type 4 wireless base if superimposed on a car phone. If there is no answer to the call from the station, if the call is made 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.

Note that the mobile phone wide area call type n (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 second
3゜The number of traffic decreases in the order of Type 4 wireless base stations, and the one with the least traffic is Type 5 wireless base stations, that is, those using satellites.

In this respect, since satellites are often used for other communications, it is thought that the calls to mobile phones according to the present invention will be used in a way that the facilities of other systems are shared. Therefore, the cost of the system does not become extremely high, and it is considered possible to use the system in a harmonious manner as a whole.

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

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 an IC card (magnetic card) and a mobile phone as an ID (il Credit card function) Since the mobile phone according to the present invention has a PID that is different from other mobile phones, it is possible to display the credit amount on the display of the phone and store it at a store. Specifically, it can be used as a payment method in the following cases.

Mr. A, who owns a mobile phone (PID), went shopping at store B. 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 (PI) installed inside Store B that uses a business district mode mobile phone system is activated.
DX) and completes the location registration of the mobile phone as described above. That is, it is stored in the roam area type 1 exchange subscriber information storage section.

Next, Mr. A presses the PTD+ function button and number in the following order (###85000) to display it 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 transmitted to the storage section of the subscriber information section of the first type exchange, and is sent to the credit storage section of the special information storage section P
The ID is stored as +P[)X+85000. 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-I saying, “The PID is currently being sent.
There was an entry for a memory entry of a credit amount to one owner. The amount is 85,000 yen” signal appears on P.
rD, (and PIDX mobile phone or PID, l landline phone).

However, PID! The signal to the landline phone is not a voice, but a bell ringing and display on the display ¥85,000, PIDI (
etc.) may also be displayed.

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.

+ii) Mobile phone into which a telephone card can be inserted The mobile phone according to the present invention has a PIN code 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.

Gvl Directional Guidance Function When using the mobile phone according to the present invention in cordless phone mode, if you turn on the power switch,
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 ##80 is pressed, the SID captured at that time can be displayed.

Also, notify the first type exchange in advance of the PIDx of your destination (visited place) (Route guidance service mode #
#82) 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 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, age of violation layer 1, etc. 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.

■ Function as membership card of various organizations including golf membership card In addition to PID of mobile phone, PID of golf membership card
(abbreviated as GPID) allows it to function as a membership card.

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

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

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

■ Function as a means to realize a vapor-free society Functions as a ballot paper for general elections, local elections, etc. That is,
By notifying the election management committee in advance that your PID matches the information on your resident card and obtaining permission, you can vote at home without having to go to the polling place on the day of voting. It will be possible to get it done. 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. Further, voters who do not own a mobile phone may use the conventional voting method, and even those who own a mobile phone may change to the conventional voting method due to some circumstances. This is because the voting station and the voter information storage unit are connected by a direct line, and the PID, whether or not voting has been completed, etc. can be immediately determined. However, when voting using a mobile phone, it is necessary to submit the person's voiceprint, password (numbers) (election PID), or signature in advance to confirm that the person is the person voting. Similar functions include PID + P for each purpose in machines that directly ask people for or against referendums and national politics, etc.
By using an ID, it becomes easier to indicate your approval or disapproval and participate in national politics. It can also be expected to improve work efficiency in censuses, etc.

fvi) Function as an input terminal for deposits to and withdrawals from a bank account, purchase and sale of bonds, one share of proprietary securities, etc. PID and PIN of the mobile phone (Bank PTD
) 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.
Mr. A's PID is PID.

shall be. Now, Mr. A started a walk carrying his mobile phone, but the power switch of the mobile phone is usually turned off (OFF).
I would keep it.

In other words, 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 business district mode, the mobile phone that is receiving control signals will Accordingly, when receiving downlink control channel signals sent from a mobile phone master device installed in each nearby residence, the location registration is changed every time the master 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. SID stored in number of results
(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 and recognizes that it is not the PID of the mobile phone that is always paired with the own device, stores it in its own memory and sends 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.

The signals at this time are the parent device SID 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 ID, which was the home area SID, is rewritten and is newly stored in the parent device STD2. 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 street via a third party's parent device (SID).

That is, for making a call, it is already possible to access the new device 5ID2, and if you perform the same dialing operation as making a call from the home area, the first device that received the call signal from the mobile phone via the new device By searching the subscriber information memory section of the mobile phone exchange, it is confirmed that the current location of the mobile phone is registered in the parent device 5 ID2 of the first type roam area, and the call is made to the first type exchange 1 billing section. When it starts, it instructs you to charge using your PID and name.

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

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

As a result, when it is confirmed that the mobile phone is currently registered in the parent device 5IDz, the mobile phone PTD and the destination call signal are sent to the parent device stDg. Upon receiving this, the parent device SIDz searches the PID signal memory section within its own device, and when it confirms that PID is registered in its own service area, it uses the downlink control channel to connect the mobile phone. Sends PID and signal for calling. When the mobile phone receives this signal, the call bell section rings and A
When he puts the caller into a hang-off state, he can 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, when an incoming call is received from any telephone anywhere in the country, the incoming call signal 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 SID:l is captured, the 5IDz signal of the communication partner is stored in the memory section of the own device, and the own PID+ signal is transmitted through the uplink control channel to the parent device 5I.
Send to D3.

The parent device 5rD3 that received this sends the P to its own device memory section.
When storing the ID, it simultaneously sends a location registration request signal (P ID, +S ID*) 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 5TD3.

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, I was able to talk, and when I started talking to Mojimoji J, the person on the other end was Mr. A's wife, and I was able to ask her about her business.

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

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

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

Mr. A could go straight to the office and work, but he remembered that he needed to go shopping, so he went shopping at a store near the office. A
His shopping trip was to get a new top and bottom of his suit. Mr. A made the payment using the mobile phone he carried without using cash. As explained in the previous chapter, this is possible. On the way home, I remembered another matter and turned on my cell phone to make a call. Then, it captures the downlink control channel of the mobile phone master device (SID3) installed on a nearby utility pole, and the first type exchange that manages this mobile phone master device uses the same process as described above. K.T.
A current location registration request signal is transmitted to the subscriber information storage unit (location registration memory unit) of C-1-(2). Upon receiving this, the location registration memory unit determines that the mobile phone is a mobile phone whose home area is not in this exchange but in another type 1 exchange (KTC-I-1) in the same city, based on the signal configuration of the PID+ signal of the mobile phone. Determines that it is a phone and registers the location of the mobile phone in its own location registration memory (PID, +5ID3)
At the same time, a location registration completion signal is sent to the visual device and the second type exchange (KTC-11-1) that manages the mobile phone (manages the second type roam area), and the mobile phone master device 5ID3 reports that it has received a location registration request for mobile phone pI'D+ under KTC-1-1.

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 (KTC), which manages the home area of the mobile phone, stores the information in its own subscriber information storage section. -1-1) versus 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, PID l is charged in the billing information storage section of the subscriber information storage section of the first type exchange, and the billing information is periodically transferred once a month to the first type exchange billing section where Mr. A is located. Mr. A is now 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 to the type 1 switch at the 'TC-I-1 level. The incoming call signal is transferred to KTC-1-2 via KTC-11-1, and an incoming call to the mobile phone is executed.

Next, in the case of a call originating from a telephone set 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-I-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-II-1, so the called telephone signal will be sent here. When it is analyzed and determined that it is addressed to a mobile phone, K
The subscriber information storage section in TC-n-1 is searched to check the location registration of the called mobile phone. As a result, the first subordinate
It is confirmed that the mobile phone exists in the roam area managed by the type exchange KTC-1-2, and an incoming call signal addressed to KTC-1-2 is transmitted. KTC-1-2 that received this signal
Then, the own subscriber information storage section is searched, and the mobile phone master device (SID) that is the current location registration location of the mobile phone is searched.
3. Sends an incoming call signal to the PID+ of the mobile phone.

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 based on the case where the call was completed within the Type 2 Roam area. Below, the mobile phone is turned on and is in standby or in the middle of a call when the owner transfers from the Type 1 Roam area to the Type 2 Roam area. The operation of this system when moving to the area will be explained.

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-I-2 that received the signal (
As a result of investigating the PID and signal, the mobile phone (located in the same Hoya city) determined that the mobile phone was not a phone under its own exchange, but a different type 1 exchange 1KTc-1-1, and managed the own exchange. The location registration signal of the mobile phone is sent to the second type exchange KTC-U-1, which is currently in use. The subscriber information storage section of the second type exchange that received this signal sends the PID to the white section.
, +S T 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 position of PID.

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

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

iii) Receiving a call from a Type 3 roaming area Mr. A decided to drive his car one day to visit a friend living in Musashino City (a Type 3 roaming area). Since I rarely visit this friend's house, I was confused because I didn't know which house I was looking for, so I decided to park my car on the road and use my cell phone to call my friend and 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 PID and 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-11-2) that we are requesting PrD and signal location registration. As a result, the subscriber information storage unit of the second type exchange memorizes the sent signal, and as a result of investigation, it recognizes that the mobile phone has a home area in another city, and the own exchange (and the mobile phone) The third type exchange (K
These signals were transferred to TC-I[1-1].

KTC-111-1, which received this signal, stores it in the subscriber information storage section of its own exchange and also stores the location registration of the PID for the second type and first type exchanges that manage the mobile phone. requested.

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

iv) Calls 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 Musashinofu, 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 can 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, and confirms that Mr. A is a member. We were able to immediately confirm that this was the case.

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

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

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

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

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

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

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

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

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

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

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

The tone of this ringing was different from the tone from the mobile phone master device and the mobile phone wide area 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 had 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 Figure 11(a) to ((to)))
Similarly to the above, if the exchange memory that manages the home area stores the location information of mobile phones in multiple exchange roam areas, the system will not become inoperable even if omitted, but the above Action is required.

viii) 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 call arrives while the mobile phone is registering its location in the roaming area, the mobile phone will receive a call.

If for some reason there is no response within a certain period of time, the incoming call is terminated and the incoming call is transferred to the fixed telephone in the home area. It is also possible to display the calling telephone number and the current registered location of the mobile phone.

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

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

By using it as an advanced function of 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, and Figures 5 (a), (b), and (C) are system block diagrams when the system used in the present invention is deployed nationwide. Figure (d) (
e) is a block diagram for explaining a partial configuration of the system used in the present invention, Fig. 5) is a diagram showing the connection between the system used in the present invention and another telephone network, and Fig. 5 ((to) (5) is a diagram for explaining the configuration of the system used in the present invention, FIG. 5(i)(j)
Figure 5 (g) is an example of frequency allocation within the service area.
is a diagram for explaining the configuration used in the present invention, Figure 6 is a signal format diagram showing an example of assigning personal identification information (PID) used in the present invention, and Figure 7 (a) is a diagram for explaining the configuration used in the present invention. Figures 7(b) and (C) are diagrams showing the signal flow during a call, and Figure 8(a) is a diagram showing the signal flow during an incoming call in a different state.
(b) (C) and (d) are diagrams showing an example of the configuration of the system used in the present invention, FIG. 9 is a diagram showing another example of the system configuration of the system used in the present invention, and FIG. FIG. 10 is a schematic diagram showing the signal flow of a call in another state of the system used in the invention (
(g)) (C) is a system diagram for explaining the routing according to the present invention, and Figs. 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 designated information assigned to distinguish between each other in the type i and type i+1 exchanges that manage the home area, the self-identification information of the plurality of mobile phones The self-identification information given to the I-class exchange and I-1 type exchange is included in the caller, and when the caller performs a dial operation to make a call, the caller receives the call before setting up the call path. The location information of the called mobile phone is searched for in the hierarchy of exchanges from the type 1 exchange to which the caller belongs to the type i exchange that manages the called party, or the location information of the called mobile phone is searched for in the hierarchy of exchanges from the type 1 exchange to which the caller belongs to the type i exchange that manages the called party.・・・・・・
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...When communicating location information to the first type exchange to which the caller belongs via the type exchange, each exchange in each layer considers route selection for setting up a call path and sends this information to the first type exchange. A mobile phone characterized in that it is configured to notify a first-class exchange to which the called party belongs, and the first-class exchange can use this information to select a route to the called party, including multi-stage detour relaying. system routing method. (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. In the above, the self-identification information of the plurality of mobile phones includes self-identification information given correspondingly to the type I exchange and the type I-1 exchange, respectively, and the caller performs a dial operation to make a call. In this case, before setting up a communication path, search for the location information of the called mobile phone in the exchanges in the hierarchy from the type 1 exchange to which the caller belongs to the type I exchange that manages the called party, or Class J exchange (j=1, 2,...
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...When communicating location information to the first type exchange to which the caller belongs via the type exchange, each exchange in each layer considers route selection for setting up a call path and sends this information to the first type exchange. A mobile phone characterized in that it is configured to notify a first-class exchange to which the called party belongs, and the first-class exchange can use this information to select a route to the called party, including multi-stage detour relaying. system routing method.