JPH08307938A - Portable telephone system - Google Patents

Abstract

PURPOSE: To secure a call chance even if the call channel of a base station is busy by sequentially giving line connection requests in accordance with previously decided priority. CONSTITUTION: When a link channel establishment request from a portable telephone machine 10 is given and the dead call channel does not exist whether a signal from the public base station of a company A can be received or not is judged. When it can be received, effect that the machine is in existence within the radio zone of the public base station of the company A is displayed on a display part 40. When a call operation is executed and the call channel is dead in the public base station of the company A, the portable telephone machine 10 displays enable call. When the machine is not in existence in the radio zone of the public base station of the company A or when no call channel is dead, whether the machine is in existence within the radio zone of the public base station of a registered system when the system to be a next candidate is registered. Then, calling is executed by the system of a company B. When it is impossible, whether the call can be executed by the system of a company C is tried.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telephone device, and more particularly to a portable telephone device which functions as a slave unit of a home base station and can be wirelessly connected to a public base station.

[0002]

2. Description of the Related Art A second-generation cordless telephone system (personal handy phone system: PHS) is used as a mobile telephone system that can make a call using a single mobile telephone in all situations of home, office, and outdoors. Practical application is in progress. In this PHS communication system,
That is, it is possible to register home and office slaves as public base station terminals (general terminals).

Further, in Japanese Patent Laid-Open No. 4-170825, a radio station incorporated in a fixed station is time-divided into a plurality of channels, and at least one of the time slots is made available to a public portable radio station so that a general household By installing this fixed station, not only as a base unit of a home cordless telephone but also as a fixed station of a public portable radio device. Further, as shown in Japanese Patent Laid-Open No. 6-13968, regarding a mobile phone, first, a control carrier for private use is provided so that the call charge becomes low when both a public base station and a private base station are available. Is disclosed so that the public control carrier can be received when the signal from the wireless base station of the cordless telephone cannot be received. Furthermore, Japanese Patent Laid-Open No. 4-1
The communication device shown in No. 37962 is also disclosed.

[0004]

However, in the above-mentioned portable telephone device, when not in the wireless zone of the home base station, it is possible to automatically switch the transmission / reception mode to the public mode for transmission / reception. Even if the home terminal is in the wireless zone of the home base station, the number of call channels of the home base station is limited. Therefore, when all the call channels are blocked, the home terminal uses the home telephone base station. Cannot make a call through. Therefore, this time, the home terminal must be switched to the public mode to perform a call operation via a general public base station. Also, when multiple mobile phone systems are provided in public mode, it is not known from which mobile phone system the call is the cheapest, and even if it is known, the call channel of the public base station is known. Is blocked,
You have to make outgoing calls one by one.

Therefore, according to the present invention, it is possible to make a call even when the call channel of the home base station is blocked.
In particular, it is an object of the present invention to provide a mobile phone device that can make a call with a few button operations and can make a call at a low cost.

[0006]

The present invention was created to solve the above-mentioned problems, and, firstly, it is a portable telephone device which is wirelessly connected to base stations in a plurality of portable telephone systems. Then, when a line connection request is made by a certain mobile phone system and the line connection cannot be made, the line connection request is made by the mobile phone system selected according to the priority order in the other mobile phone system. The second feature is that the priorities are set in ascending order of usage cost.

Thirdly, when a line connection request is made,
If you are in the home base station wireless zone, first request a line connection to the home base station, and if the call line is blocked and you cannot connect, check whether you are in the public base station wireless zone. If the determination is made and the user is in the wireless zone, a line connection request is made to the public base station. Fourthly, when the mobile phone device is in the wireless zone of a public base station in a plurality of mobile phone systems, it makes a line connection request to the public base station of the mobile phone system having a lower usage cost. Is characterized by.

Fifth, the automatic selection setting means 4 for selecting whether to make a line connection request in another system when the line cannot be connected to the portable telephone device in another system.
2 is provided. The sixth feature is that the mobile phone device is provided with a priority setting means 42 for setting the priority. Seventhly, it is characterized in that it has a display unit and displays the mobile phone system name on the display unit when in the wireless zone of the base station. Eighthly, when line connection is possible with another mobile phone system, the fact is displayed on the display unit, and the line connection is performed by the line connection operation of the operator.

Ninth, there is provided a mobile phone device wirelessly connected to base stations in a plurality of mobile phone systems,
In the case of being in the wireless zone of the base station of a certain mobile phone system, when a line connection request is made to this base station, if the wireless communication channel between this mobile phone device and this base station is in use and line connection is not possible, Or, when the line for this base station is in use and the line cannot be connected, it is determined whether or not it is in the wireless zone of another mobile phone system, and if it is in the wireless zone of this other mobile phone system, Another feature is that a line connection request is made to a base station of another mobile phone system.

[0010] Tenth, a mobile phone device for wirelessly connecting to base stations in a plurality of mobile phone systems, wherein a wireless zone of a base station of a mobile phone system selected according to a priority when a line connection request is made. If a line connection request is made to this base station and the wireless communication channel between this mobile phone device and this base station is in use and line connection is not possible, or if the line for this base station is If the line connection is in use and it cannot be connected, it is determined whether or not it is in the wireless zone of the other mobile phone system selected according to the priority order, and if it is in the wireless zone of this other mobile phone system, the other A feature is that a line connection request is made to a base station of the mobile phone system.

Eleventh, the base station of the certain mobile phone system is a home base station, and the base station of the other mobile phone system is a public base station.
Further, twelfthly, an automatic selection setting means 42 is provided for selecting whether or not to issue a line connection request in the other mobile phone system when the line connection is not possible in the one mobile phone system. To do.

[0012]

In the portable telephone device of the first configuration according to the present invention, first, a line connection request is made by a certain portable telephone system. If the line connection is not possible, the line connection request is made by another mobile phone system. Selections in other systems are made in priority order. Therefore, since line connection requests are made one after another in accordance with a predetermined priority order, a call opportunity can be secured even if the call channel of the base station is blocked. Further, in particular, in the mobile phone device having the second configuration, the priority order is determined in ascending order of the usage cost, so that the call charge can be reduced as much as possible.

Further, according to the mobile phone device of the third configuration, first, a line connection request is made to the home base station, and if the line is blocked and the line connection cannot be made, the line is sent to the public base station. Make a connection request. By doing so, even if the line cannot be connected in the home mode, there is a possibility that the line can be connected in the public mode and the call opportunity can be secured. Further, in particular, as in the case of the above-mentioned fourth configuration, when in a public mode wireless zone in a plurality of mobile phone systems, it is possible to reduce the call charge as much as possible by selecting one having a lower usage cost.

Further, in the portable telephone device of the above fifth structure, since the automatic selection setting means 42 is provided,
If the automatic line connection in other system is not desired, it can be set accordingly. Further, in the mobile phone device having the sixth configuration, the priority order setting means 42
Is provided, the operator can freely select the priority order. Further, in the above-mentioned mobile phone device of the seventh configuration, when in a wireless zone of a certain base station, the system name of the mobile phone system is displayed, so which system is the operator trying to connect to? You can know. In addition, in the mobile phone device of the eighth configuration, when line connection is possible, the fact is displayed once, and the line connection is made after waiting for the operation from the operator. Line connection can be prevented, useless line connection can be prevented, and call charges can be suppressed.

Further, in the mobile phone device of the ninth configuration, when the mobile station is in the radio zone of the base station of a mobile phone system and a line connection request is made through this base station and a line connection cannot be established, It is determined whether or not it is in the wireless zone of another mobile phone system, and if it is in the wireless zone, a line connection request is made to the base station of this mobile phone system. Here, as the case where the line connection is not possible, there are a case where the wireless communication channel between the mobile phone device and the base station is in use, and a case where the communication line connected to the base station is in use. With the above arrangement, even if the line connection cannot be established with a certain mobile phone system, the line connection may be possible with another mobile phone system, and a call opportunity can be secured. Further, particularly when the line connection request is made to the base station of the mobile phone system according to the priority order as in the tenth configuration, the call charge can be lowered by setting the priority order according to the usage cost. . When the base station of a mobile phone system is a home base station and the base station of another mobile phone system is a public base station as in the eleventh configuration, first the home base station is Since the line connection request is made, the usage cost can be reduced. Further, since the priority order setting means 42 is provided in the mobile phone device having the twelfth structure, the operator can freely select the priority order.

[0016]

Embodiments of the present invention will be described with reference to the drawings.
A mobile phone 10 according to the present invention is configured as shown in FIG. 1, and includes an antenna 12, a changeover switch 14, a receiving amplifier 16, a transmitting amplifier 18, a receiver 20, a transmitter 22, and a modem 24. , TDMA processing unit 26, codec unit 28, voice amplification unit 30, and microphone 32.
, The speaker 34, the control unit 36, and the synthesizer unit 3
8, a display unit 40, and a key input unit 42.

Here, the change-over switch 14 switches between a receiving amplifier and a transmitting amplifier. The reception amplifier 16 is for amplifying the reception signal, and the transmission amplifier 18 is for amplifying the transmission signal. Further, the receiver 20 is for performing frequency conversion of the reception signal, and the transmitter 22 is for performing frequency conversion of the transmission signal. Here, the reception frequency of the receiver 20 and the transmission frequency of the transmitter 22 are determined by the oscillation frequency of the synthesizer unit 38.

Further, the TDMA processing unit 26 uses the TDM
It processes transmission / reception data according to the A-TDD method. Further, the codec unit 28 converts the digital audio data of the ADPCM code into analog audio and outputs it to the audio amplification unit 30, or converts the analog audio into ADPCM code and sends it to the TDMA processing unit 26. Also,
The voice amplification unit 30 amplifies an analog voice signal and outputs it to the speaker 34, or amplifies a voice signal input from the microphone 32. The control unit 36 controls the operation of each unit of the mobile phone 10. The display unit 40 is composed of a liquid crystal display unit and the like, and further, a key input unit 42.
Is for inputting various signals, and includes a power switch, dial keys, a selector switch for switching between home mode and public mode, etc. It also includes a switch for automatic selection to select the public mode and a setting switch for setting the priority of each system. That is,
The key input unit 42 also functions as automatic selection setting means and priority setting means.

Here, the mobile phone 10 is constructed so as to be able to make and receive calls via not only the home base station but also the public base station. In other words, it is possible to make and receive calls in the home mode and the public mode, and when making and receiving calls in the public mode, it is possible to make calls by a plurality of types of systems.
That is, for example, the system of company A, the system of company B, and the system of company C
You can make calls using any of the company's systems. The control unit 36 holds information about the oscillation frequency corresponding to each system in the plurality of systems, and also holds information about the priority order of each system. The priority order can be changed by the key input unit 42. It should be noted that the priority order may be automatically changed at any time according to the location of the mobile phone 10 in the ascending order of call charges.

In the mobile phone 10 of this embodiment, when the power switch in the key input section 42 is turned on,
First, the home control carrier is set to be received. That is, when the power switch is turned on, the control unit 36 sets the oscillation frequency of the synthesizer unit 38 to the frequency corresponding to the household control carrier. Therefore, even if the changeover switch for switching each mode such as the home mode and the public mode is set to the public mode, the home mode is compulsorily set when the wireless base station 50 is in the wireless zone. Furthermore, if a call is attempted by the home control carrier and a line connection cannot be established, the call is attempted by each system based on the public control carrier according to the above-mentioned priority order.

The frequency allocation in PHS is configured as shown in FIG. Here, as shown in FIG. 2, control channels 1 and 2 are assigned as control carriers in the home mode, and control channels 3 to 6 are assigned as control carriers in the public mode.

The operation of the mobile phone 10 having the above configuration will be described with reference to FIGS. Here, the configuration of a mobile phone system including the mobile phone 10 will be described. The home base station (base device) 50 and the terminal 70, which are configured as shown in FIG. 3 and installed in the home, are connected to the public network. And a plurality of public base stations 60-1 to 60
-3 is connected to the public network. That is, the public base station 60-1 of the system of company A, the public base station 60-2 of the system of company B, and the public base station 60-3 of the system of company C are connected to the public network. The mobile phone 10 is wirelessly connected to the home base station 50 and public base stations 60-1 to 60-3. That is, the mobile phone 10
In the case of making a call in the public mode, the call can be made and received by the systems of Company A, Company B, and Company C.

The system of Company A has the first priority,
It is assumed that the system of company B has the second priority and the system of company C has the third priority. This priority is set in ascending order according to the call charge. In addition, three telephone lines are secured between the home base station 50 and the public network in this example. That is, according to the home base station 50, it is possible to make three calls at the same time. In addition, the home base station 50 is always capable of transmitting a control channel within the control frequency and simultaneously talking with three mobile phones. That is, it is possible to talk with three mobile phones at the same time by using three call channels. In this example, it is assumed that the home base station 50 does not include a wired handset, and the number of calls made on the mobile phone is the same as the number of calls made on the line.

First, in the mobile phone 10, it is determined whether or not the mobile phone 10 is within the wireless zone of the home base station when the power is input (S1). That is, it is determined whether or not the home control carrier is preferentially set and the signal from the home base station can be received. This is because the home control carrier is forcibly prioritized even when the changeover switch of the mobile phone 10 is set to the public mode. If the signal can be received, the display unit 40 indicates that the user is in the wireless zone of the home base station.
To be displayed. Then, for example, when the user performs a call operation as a line connection request to the terminal 70,
The home control carrier makes a link channel establishment request to the home base station 50. If you can not receive,
That is, when the wireless terminal is not in the wireless zone of the home base station, the process proceeds to step 4 below.

When there is a link channel establishment request from the mobile phone 10, the home base station 50 determines whether or not there is a vacant slot in the call channel (S2), and if it is vacant, the link channel is allocated, and thereafter, , The mobile phone 10 transmits a call request signal to the call channel (S3), and a call or data transmission is performed via the home base station 50. On the other hand, if the call channel is full,
Since the link channel is not assigned, the process moves to the next step.

That is, it is judged whether or not the automatic selection is set when the line cannot be connected by the home control carrier (S4). When the automatic selection is set, the wireless zone of the next system is set. It is determined whether it is within (S5). That is, it is determined whether or not the signal is set as the public control carrier in the company A and the signal from the public base station 60-1 of the company A can be received. If it can be received, the display unit 40 displays that it is in the wireless zone of the public base station 60-1 of the company A. Then, when the wireless user performs a call operation as a line connection request, a link channel establishment request is issued to the public base station 60-1 of the A company, and the A
The public base station 60-1 of the company determines whether or not the communication channel is available (S6).

If there is a vacant call channel, the fact that the call can be made is transmitted to the mobile telephone 10, and the mobile telephone 10 displays that the call is possible (S).
7). If the user of the mobile phone 10 confirms that the system can be connected and then makes a request by operating the button (S8), a line connection request signal is transmitted and the public base station of this company A is transmitted. Calling is performed via 60-1 (S9).

On the other hand, if it is not in the wireless zone of the public base station 60-1 of the company A in step 5 or there is no available communication channel in wireless step 6, is the next candidate system registered? It is determined whether or not (S
10) If it is registered, the process returns to step 5 and it is determined whether or not it is within the wireless zone of the public base station of the system. That is, this time, it is determined whether or not the wireless base station is in the wireless zone of the public base station 60-2 of the company B, and thereafter, the above A
Works as in the company system. That is, if the system of the company B can make a call or the like, the system makes a call or the like, and if the system is not in the wireless zone or the call channel is blocked, the system of the company C attempts to make a call.

If the system of company C cannot make a call,
In other words, when the public base station 60-3 of Company C is not in the wireless zone or when the communication channel is available, the next candidate system is not registered, so the process proceeds to step 11 and a busy tone is issued (S11). . In addition, step 4
In, the busy tone is emitted even if there is no automatic selection setting.

As described above, according to the mobile phone of this embodiment, the call charge can be reduced. In other words, in the case of home mode, only the wired fee is required, but in the case of public mode, the telephone charge is higher than that of the wired one. Tries to make a call from the public mode of a system with a low call charge, so that the call charge can be reduced. Also, if you cannot make a call in the home mode, it will automatically try to make a call in the public mode.
It is possible to secure a call opportunity by reducing the button operation.

In the above embodiment, the priority of the public mode is set in ascending order of call charges, but the priority is not limited to this, and may be determined by the ease of line connection at the place where the home base station 10 is installed. You may
For example, when the number of call channels of the company A is larger than the number of call channels of the company B, the company A may be prioritized.

Further, in the above embodiment, the number of calls of the mobile telephone and the number of lines of the home base station are the same. However, for example, when the home base station is equipped with a wired handset, One of the three call lines provided at the home base station is used when making a call using the handset of the mobile phone, so if the remaining line is used by the mobile phone, two mobile phones will be used. Only the telephone can be used. In other words, it is not possible to make a call even if the wireless call channel between the mobile phone and the home base station is vacant. Therefore, when the home base station is equipped with a wired handset as in this case, In steps 2 and 6, it is necessary to check the number of available communication lines connected to the home base station.

[0033]

According to the portable telephone device according to the first aspect of the present invention, in a plurality of portable telephone systems, line connection requests are successively issued in accordance with a predetermined priority order, so that a call from the base station is made. It is possible to secure a call opportunity even if the channel is blocked. Further, in particular, claim 2
In the mobile phone device described in (1), since the priority order is determined in ascending order of the usage cost, the call charge can be reduced as much as possible.

According to the mobile phone device of the third aspect, even if the line connection cannot be made in the home mode, the line connection may be made in the public mode, so that the call opportunity can be secured. Further, in particular, as described in claim 4,
When you are in a public mode wireless zone in multiple mobile phone systems, you can lower the call charges as much as possible by selecting the system with the lower usage cost.

Further, according to the portable telephone device according to the fifth aspect, when the automatic line setting in the other system is not desired by the automatic selection setting means, it can be set accordingly. Further, according to the mobile phone device of the sixth aspect, since the priority order setting means is provided, the operator can freely select the priority order.

Further, according to the portable telephone device of the seventh aspect, the operator can know in which of a plurality of systems the line connection is to be performed.
Further, in the mobile phone device according to the eighth aspect, the operator does not make a line connection even if he / she does not desire, and it is possible to prevent a wasteful line connection and reduce a call charge.

Further, according to the mobile phone device of the ninth aspect, even if the line connection cannot be established by a certain mobile phone system, the line connection may be established by another mobile phone system, so that a call opportunity can be secured. Further, in particular, when the line connection request is made to the base station of the mobile phone system according to the priority order as described in claim 10, the call charge can be lowered by setting the priority order according to the usage cost. . When the base station of a certain mobile phone system is a home base station and the base station of another mobile phone system is a public base station as described in claim 11,
First, since a line connection request is made to the home base station, the usage cost can be reduced. Further, claim 12
According to the mobile phone device described in (1), the operator can freely select the priority order.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a mobile phone according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing frequency allocation in PHS.

FIG. 3 is an explanatory diagram showing a configuration of a mobile phone system.

FIG. 4 is a flowchart showing an operation of the mobile phone device.

[Explanation of symbols]

 10 mobile phone 36 control unit 40 display unit 42 key input unit 50 home base station 60-1, 60-2, 60-3 public base station

Claims (12)

[Claims] 1. A mobile phone device wirelessly connecting to a base station in a plurality of mobile phone systems, wherein a line connection request is made by one mobile phone system, and when a line connection cannot be established, another mobile phone system follows the priority order. A mobile phone device characterized by making a line connection request according to the selected mobile phone system. 2. The mobile phone device according to claim 1, wherein the priorities are determined in ascending order of usage cost. 3. When making a line connection request, if the user is in the wireless zone of the home base station, first, the line connection request is made to the home base station, and if the call channel is in use and the line cannot be connected, the public base station The station determines whether or not it is in the wireless zone of the station, and when it is in the wireless zone, makes a line connection request to the public base station.
Or the mobile phone device according to 2. 4. A mobile phone device, when in a wireless zone of a public base station in a plurality of mobile phone systems, makes a line connection request to a public base station of a mobile phone system having a lower usage cost. The mobile phone device according to claim 3. 5. A mobile phone device is provided with an automatic selection setting means (42) for selecting whether or not to make a line connection request in another mobile phone system when the line connection cannot be established in one mobile phone system. The mobile phone device according to claim 1, wherein the mobile phone device is a mobile phone device. 6. The mobile phone device according to claim 1, wherein the mobile phone device is provided with a priority order setting means (42) for setting a priority order. 7. The mobile phone device further has a display unit, and when the mobile phone device is in a wireless zone of a home base station or a public base station, the mobile phone system name is displayed on the display unit. The mobile phone device according to claim 3. 8. The line connection according to claim 7, wherein when the line connection is possible with another mobile phone system, after the fact is displayed on the display unit, the line connection is performed by an operator's line connection operation. Mobile phone device. 9. A mobile phone device that wirelessly connects to a base station in a plurality of mobile phone systems, and when the mobile phone device is in a wireless zone of a base station of a mobile phone system, a line connection request is made to the base station. In this case, if the wireless communication channel between this mobile phone device and this base station is in use and line connection is not possible, or if the line for this base station is in use and line connection is not possible, the wireless zone of another mobile phone system If it is in the wireless zone of this other mobile phone system, if it is in the other mobile phone system's base station,
A mobile phone device characterized by making a line connection request. 10. A mobile phone device wirelessly connecting to a base station in a plurality of mobile phone systems, wherein when a line connection request is made, the mobile phone device is in a wireless zone of a base station of a mobile phone system selected according to a priority order. , If a line connection request is made to this base station and the wireless communication channel between this mobile phone device and this base station is in use and line connection is not possible, or if the line for this base station is in use If not, it is determined whether or not it is in the wireless zone of another mobile phone system selected according to the priority, and if it is in the wireless zone of this other mobile phone system, the base of this other mobile phone system is determined. A mobile phone device characterized by making a line connection request to a station. 11. The base station of the certain mobile phone system is a home base station, and the base station of the other mobile phone system is a public base station. Mobile phone device. 12. An automatic selection setting means (42) for selecting whether or not to request a line connection in the other mobile phone system when the line connection cannot be established in the one mobile phone system. Claims 9 to 11
The mobile phone device according to any one of 1.