JPH03280633A - Mobile telephone system - Google Patents

Abstract

PURPOSE:To attain bidirectional connection with simple constitution by allowing a mobile telephone set to receive the address of an exchange in an ISDN common line signal and a caller ID number together with a selective signal via a radio system and returning a control signal including a reception signal again to an ISDN public network via other radio system. CONSTITUTION:A mobile telephone set 3 receives the address of a digital relay exchange or subscriber exchanges LS1, LS2 and a caller ID number to be a part or all of ISDN common line signals together with a selective signal via a paging radio system I, makes a call simultaneously at the reception, returns a forced signal including a reception number to the ISDN public network again via ratio system (II) to allow the network to implement routing. Then the incoming call to the mobile telephone set 3 is realized by applying relay connection or the connection in its own station to the line of the mobile telephone set 3 and the caller circuit in the digital relay exchange or subscirber exchanges LS1, LS2. Thus, bidirectional connection is attained at a low cost and with simple constitution.

Description

DETAILED DESCRIPTION OF THE INVENTION [Purpose of the Invention (Field of Industrial Application) The present invention relates to a mobile telephone system with a simple configuration and capable of bidirectional connection.

(Conventional technology) The basic technology of mobile telephony can be found in car phones.

When mobile devices move at high speed, such as car phones,
The location tracking of mobile objects and the zone registration system are essential functions. In a typical communication network configuration, a large number of wireless base stations are gathered together to form a control zone, and each control zone has a wireless network control station (MC3).
is provided. In addition, a mobile phone switching center (AMC) was established by bundling several wireless network control stations, and was also connected to the general public network.

(Problem to be Solved by the Invention) Although the advantage of the conventional system is that it is a small zone system and contributes to the proliferation of channels, the system cost and user cost are high. It is predicted that the greatest user need in the future will be a mobile phone that is an advanced version of the cordless phono. This is not a phone that moves at high speed like a car phone, but rather a phone that can be moved while walking, a phone that can be easily used outdoors, and a low cost phone. Therefore, it is not possible to drastically simplify the communication network configuration and reduce the system cost by an order of magnitude, but this has recently emerged as a new challenge.

SUMMARY OF THE INVENTION An object of the present invention is to provide a mobile telephone system that has a simple configuration and enables bidirectional connection at low cost.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, the invention described in claim (1) provides a common method for each of the digital trunk exchanges and/or subscriber exchanges constituting the ISDN public network. A paging radio system (1) consisting of a group of broadcast-type radio base stations individually connected to line signaling equipment, and a radio system consisting of a group of two-way radio base stations connected to a group of subscriber interfaces in the same network. system (II) to service a common origination control channel and bidirectional communication channel, and on the mobile phone side, all or part of the ISDN common channel signal is transmitted via the paging radio system (1). The address of the certain digital trunk exchange or the subscriber exchange and the caller ID number are received together with a selection signal, and a control signal including the received signal is generated by calling simultaneously with the reception and via the wireless system (II). is returned to the ISDN public network to execute routing, and the digital relay exchange or subscriber exchange connects the caller's line and the mobile phone's line through a relay connection or local connection, thereby In the invention as set forth in claim (2), wherein the mobile telephone realizes receiving a call, the mobile telephone includes a radio telephone interface unit that makes a call to the radio system (II);
A receiver unit that terminates the selection signal broadcast by the paging radio system (1) and the ID code of each mobile phone are registered.
and an IC card section that can be attached to and detached from the wireless telephone interface section, and the wireless telephone interface section allows calling to the wireless system (II) only when the IC card section is attached. The invention according to claim (3) is characterized in that the wireless capacity for paging is increased, and the receiver section of the mobile phone is configured to receive a plurality of selections broadcast by the wireless system (I). Equipped with a cyclic scanning reception function that sequentially receives signal waves, in an area to which a plurality of selected signal waves are allocated, only a pre-specified selected signal wave is received, and the specific selected signal wave does not exist within the area. The invention as set forth in claim (4) is characterized in that, when receiving a selection signal, receiving another selection signal wave according to a predetermined rule or an instruction from a one-way radio base station that has jurisdiction over the area. The invention according to claim (5), characterized in that the receiver section and the IC card section are integrally molded to form a portable medium, and the medium is configured to be freely attachable and detachable to the wireless telephone interface section. In order to eliminate the distinction between conventional mobile phones and in-home cordless telephones, the wireless service area consists of a private digital branch exchange and wireless connection equipment located throughout the premises and terminates the premises telephone line, or ISDN. A wireless service area consists of a public network subscriber exchange and a wireless connection device installed in the home that terminates the subscriber line, and a paging wireless system (
1), and a wireless system (II) that provides a common outgoing control channel for cordless telephones and a bidirectional communication channel for uplink and downlink. Receives the ID code together with the selection signal, makes a call at the same time as the reception, and sends a control signal including the caller ID code back to the digital exchange via the radio system (II), and in the digital exchange, the caller side The present invention is characterized in that incoming calls to the cordless telephone are realized by relaying or local connection between the line of the telephone and the line of the cordless telephone.

(Function) The present inventors have succeeded in realizing a mobile telephone system that has an extremely simplified network configuration and that also enables two-way connections. Comparing with conventional typical examples: 1) There is no radio channel control station (MC3).

2) Use only the ISDN public network to perform dialing connections for fixed telephones, without installing a separate automatic telephone switching center (AMS) or mobile telephone switching center (MC3).

3) A mobile body location tracking and registration system may not exist in the network.

Although the configuration completely ignores such common technical knowledge, the present invention has made "bidirectional connection control" possible.

In other words, the main component is that mobile/mobile phones are ISDN
No. 7 The reason lies in the devised communication network configuration that is located at the turning point of the common line signal line. In this sense, this mobile phone is a unique radio station unlike any other;
It has also become a terminal that actively takes advantage of the flexibility of SDN communication network control.

First, the most basic feature is that the relay connection function of the digital exchange that constitutes the public network ISDN is commonly used by mobile telephones and fixed telephones.

Therefore, the subscriber calling code of the mobile telephone is ISD
It is incorporated into the N numbering plan. Its format is ISD
The subscriber line number part of the N address is filled with a dummy code, and the ISDN subaddress part is used as the mobile phone's individual number.

For example, if the office number of a certain subscriber exchange is "542'," the mobile subscriber code for this area is given as a dummy subaddress.

When making a call from a mobile telephone, dial the service code (eg, "030"), the other party's paging area (P-area), and subscriber code. For example, dialing: Calling side/Subscriber code: 541-****-67890 In this way, it becomes possible to handle conventional wired systems and future wireless systems from a unified perspective.

This means that in-home cordless phones and mobile phones can be integrated to provide services.

These ID codes are transmitted as selection signals to the local exchange (LS) via the subscriber line common channel (D channel). The dial signal and subscriber code originating from this mobile telephone are treated as common channel type subscriber line signals and delivered to the local exchange (LS).

In response to this call, the subscriber exchange performs normal origination analysis and digit analysis, and connects to another station, that is, the relay exchange in question (
TC). At the same time, a signal for routing is delivered as a NO,7 common line signal to the transit switch (TS) via the common line signal line.

Once the service type is analyzed, the network address of the exchange,
The No. 7 common line signal with the designated relay line number is sent via the high-speed data line again to the broadcast type radio base station (hereinafter simply referred to as radio base station) that has jurisdiction over the radio system (1) under the umbrella of the exchange. Further, this signal content is wirelessly broadcast from this radio base station using the receiving subscriber ID code as a selection signal. Note that if the information processing function of the relay exchange can be used, the relay line number of the caller is temporarily stored in the common memory of the exchange in a table format in correspondence with the caller number. Therefore, in this case, the service type, call type, caller number (caller/subscription code), and relay exchange address are broadcast together with the selection signal as a paging signal. It is not necessary to transmit all of the common channel signals.

Immediately when the selection signal arrives at the mobile telephone, the wireless telephone interface section is automatically powered on, an appropriate two-way communication zone is selected, and the call operation begins. There are various methods for this call connection, which will be described in an embodiment.

Here, the two-way communication zone is a wireless zone within a radius of 1 km, which includes uplink and downlink communication channels, and includes an outgoing call control channel that corresponds to calls made from mobile telephones. This call zone is installed throughout the outdoors as an ISDN public telephone zone, and constitutes an access area centered around a simple base station (referred to as the two-way radio base station).

If the call connection is successful, signals such as the service type, caller ID code, network address, and possibly trunk line number are sent to the public telephone zone and sent to the local switching system (LS) controlling the zone. Sent. When the subscriber exchange reads the intermediate exchange address and makes a switching decision, the signal is sent as a new No. 7 common line signal (with the intermediate exchange address as a common denominator) through the high-speed data line to the intermediate exchange. As a result,
For the first time, the exchange is able to make a relay connection (including connection within its own office) between the relay line of the source caller and the relay line of the mobile telephone.

In this way, the entire routing to the mobile phone is completed. Although the user appears to be accessing a mobile device, the actual routing process is such that the route from the caller to the relay exchange and the route from the mobile phone to the relay exchange are connected at the relay exchange or within the local office. This is the process of being connected. This is possible because a high-speed data line called a common signal line directly connects the CPUs of the exchange group, independent of the communication channel. Therefore, the signals flowing through the routing circuit are not of a nature that concerns the subscriber interface section. Nevertheless, this method, in which the mobile unit returns this signal and actively participates in ISDN network control, is a new switching technology suitable for the ISDN era, replacing the previous "track and trace switching method."

Viewed from the signal format, the common line signal that controls the relay connection consists of two common line signals whose common term is the relay exchange number in the network address as the destination station number, that is, the downlink common line signal and the uplink common line signal. It consists of An example signal format is shown in FIG.

Call charges will be handled in the same way as current public telephones.

Every time a billing signal is sent to the caller, the IC card section makes the payment. There are two types of payment: current payment and credit payment. The IC card section thus makes it possible to distinguish between the user and the owner of a mobile telephone. It is this IC card section that carries the designated information regarding wireless and allows the telephone to perform the necessary wireless functions.

The mobile phone also functions as an in-home cordless phono when paired with a weak or low power type wireless connection device in the home. As required by law, the wireless connection device of current cordless phonos and the mobile telephone identify each other by a common selection signal.

The selection signal is currently given by the government and preset by the manufacturer, but
The meaning of claim 5 does not assume this current system.

That is, the mobile device receives the ID of the in-home wireless connection device via the paging wireless system (I), and then uses this ID as a selection signal to identify the wireless connection device and successfully establish the necessary connection. This is because it is possible. In this system, the radio system (1) broadcasts the ID of the mobile telephone as a selection signal, and when the mobile telephone accesses the radio system (rl), the ID of the wireless connection device is used as the selection signal. In other words, this is different from the current method of using a common selection signal. Note that the in-home wireless connection device is post-set with the ID code of a specific mobile phone as differentiation information so that it can only accept access from a specific mobile phone. This is input by the user using the numeric keypad after purchase.

In this way, the in-home cordless phono and the outdoor mobile phone are unified with the same radio configuration. For the ID on the wireless connection device side, avoid artificial codes and use ISDN.
Assign the Layer 2 ID code of, for example, the "TEI" that the local exchange gives to its termination point.

The mechanism of incoming call connection to a mobile phone has been clarified above, but if we decide not to have a system for tracking and registering the location of the mobile phone, the logical consequence is that in order to receive the selection signal to the mobile phone, This means that the entire country must be made into a uniform paging area.

Since this system is scheduled to have all adult citizens become subscribers, it will be necessary to allow an average of around 100 million people to become mobile phone users each day. Of these,
It is impossible to support mobile radio stations of tens of millions of people with paging radio waves. Current pager transmission speeds can only support about 100,000 users per hour, so it's hard to imagine how huge a communication capacity these tens of millions of users will require. It's obvious that there is. Of course, a mobile telephone with a conventional small zone type location registration system could solve this problem, but the present invention does not include a location registration system. We solved this difficult problem while keeping the communication network simple.
This is from the following two aspects.

One is that this mobile phone can also be used as a cordless phono, and is positioned in the advanced cordless phono line. Calling a home equipped with a cordless phono means that, from a mobile telephone perspective, the home becomes a paging area. This is the smallest unit of paging area. This is called "home paging." Or within one business office, this is also home paging. In light of the user's sense, if there is no corresponding person in this home page, - Instead of searching the area, 9
In 9% of cases, it is possible to know in which area the person in question is located, by city, prefecture, prefecture, or metropolitan area.

Therefore, in the mobile telephone system according to the present invention, the selection of the paging area is left to the user. The region designation method is suitable only for mobile phones. The size of the area was determined by prefecture or by area that is expected to be used by 1 million people per hour. This is called “local paging.”

Nationwide paging is called "global paging. Of course, the usage charges are differentiated. The metropolitan area is one local paging. Then, finally, there is a communication service that can accommodate usage of 1 million people per hour. The only issue remaining is how to secure capacity.

In the present invention, the paging channels are configured, for example, in a set of 7 channels, and a plurality of waves selected according to a certain rule from among the 7 channels are assigned to densely populated areas, and the same waves are assigned at zone boundaries. Channels should be operated to avoid mixing, so a unique channel should be assigned to each area.Furthermore, the channel group should also act as an eigenvector for the receiver section of the selection signal.
We decided to construct a vector space. For this reason, while the receiver section has a unique tuning frequency, in some cases the receiver section itself is configured to automatically tune for each area.

That is, the receiver section has a total of 7 channels corresponding to the number of channels.
There are several types available, and while each has the same cyclic scanning reception function that sequentially receives seven different waves, each receiver section is unique in areas where multiple waves coexist. Like a receiver that receives only the tuned frequency of It has the feature of selectively receiving waves. The predetermined conventions are stated in the examples as cyclic rules. Additionally, the subscriber is given a specific receiver assigned to the area for which he/she applied, eg, one of seven colors. The common memory of ISDN subscriber exchanges in this area is
This simple circular selection rule is memorized so that when a paging area is dialed in by a user, the ISDN network attempts to identify on which wave to page in that area. In this sense, IS
Although the DN network does not make any active efforts toward mobile telephones,
r Function is active.

In this way, a situation has been created in which the state vector of each area changes from moment to moment as the user moves between areas. It goes without saying that the more dimensions the vector space has, the more communication capacity can be secured. The type of receiver section is determined by the IC card section. The hardware itself is not different. The receiver section is individualized by the radio-related designation information carried by the IC card section.

(Embodiment) FIG. 1 is a block diagram showing an embodiment of a mobile telephone system according to the present invention.

The transit exchange TC is a subscriber exchange group L of the public network ISDN.
SI, LS2. ..., and in particular, in this embodiment, it functions not only as a relay service for fixed telephones but also as a mobile telephone switching center that provides services for mobile telephones.

Therefore, each common line signal Ml is connected to this trunk exchange TC.
Broadcast type radio base stations, that is, a large number of unidirectional radio base stations 2 are connected via the radio base station.

Each one-way radio base station 2 transmits an access signal to the mobile phone 3 when the mobile phone 3 is accessed via the N007 common line signal output from the common line signal device in the relay exchange TC. will be transmitted wirelessly. Each paging zone is configured around this one-way radio base station 2, and the access from this one-way radio base station 2 to the mobile telephone 3 is hereinafter referred to as a radio system (1).

On the other hand, each subscriber exchange LSI, LS2. A plurality of public telephone zones are formed below, and within each public telephone zone, a two-way radio base station, that is, a simple radio base station 4 is installed.

This simple radio base station 4 functions as a relay point for communication between the mobile telephone 3 accessed by the No. 7 common line signal and the receiving party, as will be described later.

Next, the mobile telephone 3 of this embodiment will be explained with reference to FIGS. 2 to 4.

This mobile telephone 3 includes a radio section 5, a control section 6, an antenna 7, a card interface 8, and a transmitter/receiver 9, as shown in FIG. 2 using the FDMA method as an example.
The IC card 1 includes an IC card 1 section 10 inserted through a card interface 8.

As shown in FIG. 3, the functional configuration of this mobile telephone 3 consists of a transmitter/receiver 11, a transmitter 12, a receiver 13, and a synthesizer 14.

On the other hand, the IC car 1 unit 10 inserted into the card interface 8 has a CPU 20 as its control center, as shown in FIG.
It includes a FROM 21 and a RAM 2B used as a work area for the CPU 20.

The EFROM 21 contains a PIN code management program, a charge payment method control program, a call frequency control program, a shortened code management program, a display management program, a selection signal code management program, a number display program, and a charge display/remaining program. A frequency display program, an abnormality display program, etc. are written, and the CPU
In response to a read signal from 20, one of these programs is read and its processing is executed.

In particular, the IC car 1 part 10 of this embodiment has an ID-RO
The device includes an M24, a partner ID code storage section 25, an LCD display 26, and a keyboard 27.

FIG. 5 shows the external configuration of this mobile phone 3.

This figure shows a state in which the IC car 1 part 10 is inserted.

Next, the operation of this embodiment will be explained.

The mobile phone (hereinafter abbreviated as mobile phone) 3 exhibits a predetermined function when the IC car 1 part 10 is attached. When this state is reached, the device functions as a man-fist machine interface between the human system and the wireless system. This state transition is shown in FIG.

The receiving unit 13 of the mobile device 3 has two systems: a wireless system (1) receiving function and a wireless system (Ill) receiving function. There are two ways to handle this: one is to use separate receivers, and the other is to use a common receiver.

If different receivers are used, the wireless system (1) receiver will be compatible with the pager-receiver system (pager), whereas if a common receiver is used, the wireless band (assigned to this system) will be used. This method uses a part of the paging channel for the paging channel.

Furthermore, in the case of a pager-receiver system, the receiver and IC
The card 1 part 10 is integrally molded to form a "paging card". Since the state transition diagram in FIG. 6 is a functional diagram as a man-machine interface, it was created so that it can be applied to either embodiment.

Regarding the concept of channel, the radio section system is FD.
The physical meaning differs depending on whether it is an MA system or a TDMA system, but in this embodiment, unless otherwise noted, it applies to both a specific band and a specific time slot (channel phase). . This embodiment relates to a functional configuration for accommodating wireless stations in densely populated areas while simplifying the system configuration and drastically reducing costs. unaffected.

The mobile device 3 is equipped with a power switch, but when it is manually turned on, normally only the power of the receiving section corresponding to the wireless system (1) is turned on. Turn on the transmitter system power
N is normally set when the dial digits are set and the "off-hook" key is entered. Even though it is called a transmission system, the communication is bidirectional, so as mentioned above, the transmitter 1
2 and a receiving section 13.

When the power is turned on manually, the "natural frequency information" is read out from the IC car 1 section 10, and the state changes from ■ to ■.

Here, the receiving unit 13 scans and receives the paging radio waves and tunes to an appropriate wave. This selective (cyclic) rule will be described later. As the reception level decreases as the area moves, scanning reception is started again when the reception level drops by a certain amount. Unless otherwise, it's the so-called "standby".

maintain the state of

To move to the next state, that is, to turn on the transmitting system, the selection signal arrives, but after preset dialing, the "off hook key" is input, but when either trigger is turned on.

First, we will explain what happens when "off-foot" occurs.

The subscriber ID code and outgoing control channel information are read out from the ID-RoM 24 of the IC car 1 section 10, and the state changes from ■ to ■. Usually, a plurality of such channels are provided, and when they are not in use, idle line signals are broadcast. This is the so-called idle signal multiple access (ICMA) method.

When the mobile device 3 detects reception of an idle line signal, it makes a call using an uplink channel and transmits a call sign, ID code, etc.

The simple base station 4 thereby identifies the mobile station 3 and returns a response signal to it using a downlink signal. This downlink signal includes the ID code of the base station 4. The condition is ■－■－
Repeat ■.

When the mobile telephone 3 selects the channel with the highest reception level among the response signals, the state changes from ■ to ■. When it receives an idle line signal from the base station, it immediately makes a call again and this time requests designation of an idle channel for communication. The status changes from ■ to ■. Up to this point, connection control has been performed using a common channel.

When receiving the designation information of a vacant channel for a call, the system shifts to individual channel control. When this state is entered, the manually inputted dial signal is transmitted to the simple base station 4 along with the subscriber ID code of the mobile device 3 via this individual channel. The status changes from ■ to ■.

If the relay connection or incoming connection to the subscriber line is successful,
When the ringback tone sounds and the other party goes off-hook, the call state finally changes to ■. In addition, the number of calls,
The execution status of call charge processing differs depending on the current payment function or credit payment function of the IC car 1 section 10. In the case of a temporary telephone, a billing signal is transmitted to the mobile device 3 via a separate channel, just like a general public telephone, and the bill is then settled. In the case of a credit type, the subscriber is treated as a normal subscriber who pays in deferred fees without relying on billing signals.

The above is a case in which the mobile device 3 takes the initiative to make a call and enters a conversation state, but there is another case where the mobile device 3 makes a call as a return point for the NO67 common line signal. ISDN
This is the so-called return access to.

When a selective paging signal arrives at the mobile device 3 and a common line signal (service type, network address, relay line number, user signal) arrives as information, the transmitting unit 12 is immediately turned on automatically and the above-mentioned process is performed. As I said, the condition is ■−
Transition to ■−■.

This time, instead of the dial signal, the contents of the common channel signal are transmitted to the base station 4 of the wireless system (II) via the individual channel. When utilizing the information processing function of the transit exchange TC,
The common channel signal broadcast by the wireless system (1) is compressed into the service type and user signal part (caller ISDN number), so
This signal is returned by the mobile device 3 and transmitted to the radio system (II) via the individual control channel. Thereafter, the signal is transmitted as a common channel type subscriber line signal to the subscriber exchange and from there back to the relay exchange, where a relay connection is established between the originator side and the destination side (referred to as return routing). When either goes on-hook, the call ends, and once charge processing is complete, the call channel is released. A disconnection signal is sent to the network, and all lines are also released.

The above processing is shown in the flowchart of FIG.

By the way, if a small zone system could be adopted, it would be possible to narrow down the users to less than 100,000 Å in one wireless zone, and therefore control incoming calls by tracking exchange, but in this system, in order to simplify the network, , the paging area is configured in a large zone system, and automatic tracking exchange is not performed.

As in this example, large zone method (radius 20 km to 40 km)
We will explain how to secure paging communication capacity in a densely populated area where use by 1 million people per hour is expected while adopting m).

In this embodiment, seven types of IC card sections are prepared, and a unique frequency is assigned to each.

When a person who wishes to use this system applies for membership in the area, one of seven types of cards will be given to the subscriber, and the IC card will contain the subscriber ID code (telephone number).
is registered. In addition, the numbering plan for subscriber ID codes includes a distinction between seven types of IC cards.
It is registered in the ID-ROM 24. Therefore, by analyzing the dialed number of the intended call recipient, the local exchange can identify which type of mobile station the call is to be paged to. On the other hand, seven types of paging channels are prepared, and they are arranged in each area according to the following rules.

Now, if we represent the seven types using seven colors as shown in Figure 9, 1) In densely populated areas, every other channel of yellow, red, and blue will be arranged, and the corresponding IC card c ,,C3
, C5 are also issued almost equally.

2) In the surrounding areas, white, purple, and green channels are arranged repeatedly, and cards of C2, C4°C6 are issued corresponding to each channel.

3) Each mobile device equipped with an IC card tunes into its own unique wave in areas where it exists, and receives clockwise adjacent waves in areas where it is less than a specified value. For example, if a mobile device with a C1 card moves to the surrounding area, it will first receive the white channel, then if there is no white, it will skip over the red to the purple channel, if there is no purple, it will bus the blue to the green channel, and so on. are received sequentially, and the surrounding area is tuned to white, purple, or green.

In this way, a matrix-like relationship is established between the issued "color 2 of car F" and the "channel color" that is synchronized as the area moves. This relationship is shown in FIG.

For example, if you want to page a yellow card, you can see from this figure that it will tune to the yellow channel in the metropolitan area, the white channel in adjacent areas, and the red channel in depopulated areas, so when the subscriber exchange receives the selected digits, it will tune to the yellow channel. By performing numerical analysis and identifying (1) which color of card the mobile device is to be paged, and (2) which area to be paged, it is possible to specify the color of the paging channel using this table. Enter "color designation" into the user part of the No. 7 common line signal and transmit it to the relay exchange.

How many total users can be served by arranging three channels in one paging area? One paging requires a 120-bit signal, and 2400
If we use a channel with a speed of bit/s, and the number of times a user is paged outside the home is 2 times/hour (which corresponds to 4.8 times/day), then (3600 seconds/120 /2400) 10.2-360.
000 users/hour, it is calculated that 3 channels can handle paging of approximately 1 million people/hour. This is the number of incoming calls that can be accommodated on the mobile device, so users who make calls from the mobile device (
(to landline telephones) is two to three times this amount (the ratio of how a mobile device is used as a calling system and as a receiving system is about 3:1), so from the user's perspective, there are 1 million paging calls per hour. It feels like you're being contained.

Next, user dialing will be explained.

This mobile device can be used as both a cordless phone and a phone.

Now, if we look at the use of cordless φ phones between two households from the perspective of mobile telephones, this can be interpreted as controlling incoming calls to the other party using "homepage", which is the minimum area specification method. If the person on the other end of the page is unavailable, and the caller has something urgent to do,
What they would do is probably judge from the other person's daily behavior and designate an appropriate prefecture-based area.

This is ``Local Paging 1.'' Cases in which missing persons are dealt with account for only a few percent of the total cases, and ``Global Paging 1'' corresponds to this. Unlike car phones, in the case of mobile phones, it is sufficient to reflect such user feelings in the area specification method. This is different from a car phone.

1) Homepage: Call-less service to homes and offices.
Response as a phono 2) Local paging; to the prefecture level 3) Global paging; per prefecture/nationwide.

All user needs are contained within these three layers. In this example, the "silver channel" is positioned for special use.

Next, the procedure for accessing a mobile device from a fixed telephone and making a call between the two will be systematically explained according to the flowchart of FIG.

When the fixed telephone is taken off-hook (process ①), connection between the local exchange (LS) and layer 2 is started.

Connection completion is notified with a dial tone (processing ■).

To input the dial, add the number (045) of the T and C stations in Yokohama to the beginning of the subscriber code of mobile device 3, add the service code, and dial as follows (Process ■). . However, * means dummy code.

The local exchange (LS) connects to the transit exchange (TS) and sends out a N007 common line signal containing the caller number (541-3131) (processing ①).

The transit switch (TS) (a) analyzes the service, (b) analyzes the paging area, (c) maintains the relay line with the caller, and (d) wireless system (1) ) to send all or - part of the common line signal.

Destination: 542-*-12345 Network address of relay exchange, Caller number (541-3131) When the signal arrives at mobile device 3, it is temporarily stored, and the transmitter is immediately powered on.

The mobile device 3 accesses the nearest simple base station 4 in its area (processing ■). At this stage, the carrier still knows nothing; this is called return access. The return access sends the signal back to the ISDN and follows the route from the subscriber exchange to the transit exchange (processing
- processing [phase]).

Although this case is different, there is a case where the person carrying the phone dials the call by himself/herself and makes a call (processing ■ - divine processing [phase]). When the line of process ■ and the line of process [phase] are connected at the transit switch (TS) (process 0), the subscriber switch (LS) rings the call bell,
Activate ringback tone (process 0). At this point, the person carrying the phone is notified of an incoming call for the first time and learns the caller's ID by looking at the LCD display. Then choose to hold the response or go “off-hook” (processing◎
).

After that, the call is made, the call is ended, the charge is processed, and the call is disconnected. The reason for setting a timer in process (2) is to determine whether the mobile device 3 is located in the area and whether the mobile device 3 is turned on.

In the above embodiments, the above-mentioned "local paging 0" or "global paging" has been described, but it is also possible to use the mobile device 3 as a cordless telephone.

In this case, wireless connection devices for terminating local office lines are placed throughout the premises, and together with private digital exchanges, constitute a wireless service area.

In addition, a wireless connection device for terminating subscriber lines is installed in the home, and together with the subscriber exchange, it constitutes a wireless service area.

The wireless connection device has functions of a paging radio system (I) that supports call setup using the D channel, and a radio system (II) that provides a common outgoing control channel for cordless phones and a bidirectional communication channel for up and down. to have.

Then, the cordless telephone side receives the caller ID code along with the selection signal via the paging radio system (1) as described above, makes a call at the same time as the reception, and sends the call via the radio system (II). transmitting a control signal including a subscriber ID code back to the private digital branch exchange or subscriber exchange, and in the digital branch exchange or subscriber exchange,
Incoming calls to a cordless telephone can be realized by connecting the caller's line and the cordless telephone's line through a relay connection or an intra-office connection.

[Effects of the Invention] As explained above, the mobile telephone system according to the present invention has a simple system configuration, uses the public network ISDN as an infrastructure, and is capable of bidirectional connection without being limited by the size of the region. shall be.

Furthermore, by handling the wired system and the wireless system in an integrated manner, services can be provided to users without distinguishing between cordless telephones for home use and mobile telephones.

[Brief Description of the Drawings] Fig. 1 is an overall configuration diagram of a mobile telephone system according to the present invention;
FIG. 2 is a schematic configuration diagram of a mobile phone, FIG. 3 is a detailed configuration diagram of the mobile phone shown in FIG. 2, FIG. 4 is a configuration diagram of an IC card section, and FIG. 5 is an external configuration diagram of the mobile phone. Fig. 6 is a state transition diagram of the mobile telephone, Fig. 7 is a flowchart showing the processing procedure of the mobile telephone, Fig. 8 is an explanatory diagram showing an example of a signal processed by the exchange side CPU, Figs. 9 and 10. 11 is an explanatory diagram showing the cyclic rule of scanning reception, and FIG. 11 is an explanatory diagram of the operation of this embodiment. 1... Common line signal line 2... One-way radio base station 3... Mobile telephone 4... Simple radio base station 5... Radio unit 6...-Control unit 7-... Antenna 8- ... Card interface 9 ... Transmitter/receiver O... C card section

Claims (5)

[Claims] (1) A paging radio system (I) consisting of a group of broadcast-type radio base stations that are individually connected to each common line signaling device of the digital trunk exchange and/or subscriber exchange that constitute the ISDN public network, and the same network. a radio system (II) consisting of a group of two-way radio base stations connected to a group of subscriber interfaces in the mobile phone, and serving a common origination control channel and a two-way communication channel; The address of the digital relay exchange or the subscriber exchange, which is part or all of the ISDN common channel signal, and the caller ID number are received together with the selection signal through the paging radio system (I), and at the same time as the reception. A call is made and a control signal including the received signal is sent back to the ISDN public network via the radio system (II) to execute routing, and in the digital relay exchange or subscriber exchange, the caller side 1. A mobile telephone system, characterized in that incoming calls to the mobile telephone are realized by relay connection or intra-office connection between a line and a line on the mobile telephone side. (2) The mobile phone has a wireless telephone interface unit that makes a call to the wireless system (II), and a paging wireless system (I).
The wireless telephone interface section comprises a receiver section that terminates a selection signal broadcast by the mobile telephone, and an IC card section in which the ID code of each mobile telephone is registered and that can be attached to and detached from the radio telephone interface section. 2. The mobile telephone system according to claim 1, wherein a call to the wireless system (II) is permitted only when the IC card section is installed. (3) The receiver section of the mobile phone has a cyclic scanning reception function that sequentially receives multiple selected signal waves broadcast by the radio system (I), and in areas to which multiple selected signal waves are allocated, it is specified in advance. receive only the selected signal wave,
A claim characterized in that, if the specific selection signal wave does not exist within the area, another selection signal wave is received according to a predetermined regulation or an instruction from a one-way radio base station that has jurisdiction over the area. (2) Mobile telephone system as described. (4) The receiver unit that receives the selection signal and the IC card unit are integrally molded to form a portable medium, and the medium is configured to be freely attachable and detachable to the wireless telephone interface unit. A mobile telephone system according to claim (2). (5) A wireless service area is composed of a private digital branch exchange and wireless connection equipment placed throughout the premises and terminating the premises office line, or a subscriber exchange installed in the home and connected to an ISDN public network subscriber exchange. A wireless service area is configured with a wireless connection device that terminates the communication line, and a paging wireless system (
I), and a wireless system (II) that provides a common outgoing control channel for cordless telephones and a bidirectional communication channel for uplink and downlink. The ID code is received together with the selection signal, and upon reception, a call is made and a control signal including the caller ID code is returned to the digital exchange or subscriber exchange via the radio system (II), and the caller ID code is sent back to the digital exchange or subscriber exchange. A mobile telephone system is characterized in that, in a mobile exchange, a call can be received to a cordless telephone by connecting the caller's line and the cordless telephone's line through a relay connection or an intra-office connection.