JP3505458B2 - Communication control method for mobile communication terminal and recording medium recording the communication control method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication control method for a mobile communication terminal having a plurality of transmission / reception functions of different mobile communication systems and a recording medium recording the communication control method.

[0002]

2. Description of the Related Art As a conventional mobile communication terminal having a transmitting / receiving function of a plurality of different mobile communication systems, for example, P
DC (Personal Digital Celluar) and PHS (Personal
Handy-phone System) is a complex type mobile communication terminal.

In such a communication device, there is no problem in receiving radio waves in both mobile communication systems at the same time, and in receiving radio waves in the other mobile communication system during communication in one mobile communication system, but at the same time When radio waves are transmitted by both mobile communication systems, unnecessary radio waves are generated due to intermodulation distortion.

As a countermeasure against the intermodulation distortion, when the transmitting / receiving sections of both mobile communication systems are individually shielded so that they do not interfere with each other, or the antenna of the transmitting section is shared by both mobile communication systems, Insert a nonreciprocal element such as an isolator or a circulator, or an antenna switch such as a circulator switch in the wiring path so that they do not interfere with each other through the antenna and wiring.
There is a method of suppressing unnecessary radio wave generation due to intermodulation distortion by improving the performance of a filter element such as a duplexer.

However, as in the above-mentioned method for preventing intermodulation distortion, it is used when the isolation performance of the isolator, circulator, duplexer, antenna switch, or the like used in the transmitting portion or the isolation performance of the shield is increased. The device to be used becomes larger and heavier, and accordingly, the entire communication device becomes larger and heavier. For this reason, such a method is not applied to a communication device such as a mobile communication terminal that requires portability, and while the radio wave of one mobile communication method is being transmitted, the other mobile communication The method of prohibiting the transmission of radio waves is used.

On the other hand, recent mobile communication terminals provide various types of communication such as access to homepages via mail or the Internet, in addition to voice calls. Due to the performance of mobile communication terminals, these services are not designed to be accessed for a long period of time like the internet surfing performed on a desktop computer, but to be able to easily send and receive mail or access the Internet in a short time. There is. For this reason, communication using these services does not take much time to reconnect even if the communication is once terminated, and has a lower priority than a voice call in which the other party exists.

[0007]

However, in the conventional mobile communication terminal having the transmission / reception function of two mobile communication systems, the transmission section of one mobile communication system is used as described above regardless of the priority of communication. While the radio wave is being transmitted, the transmission section of the other mobile communication system is prohibited from transmitting the radio wave. Therefore, while communicating with one mobile communication system,
Even if the priority of communication during communication is low, there is a problem that it is not possible to perform incoming call processing of communication with high priority such as a call by the other mobile communication method.

An object of the present invention is to provide a communication control method for a mobile communication terminal and a recording medium on which the communication control method is recorded, which solves the above problems and improves usability.

[0009]

SUMMARY OF THE INVENTION The present invention provides a first
And a communication control method for a mobile communication terminal having a transmission / reception function of a second mobile communication method and not transmitting at the same time in both communication methods, wherein the mobile communication terminal uses a voice call in the first mobile communication method. When the call signal of the communication of the second mobile communication method is received during the communication other than the above, the communication of the first mobile communication method is terminated and the incoming processing of the communication of the second mobile communication method is performed. Is a communication control method for a mobile communication terminal.

According to the present invention, when the call signal of the communication of the second mobile communication system is received during the communication other than the voice call in the first mobile communication system, the communication of the first mobile communication system is performed. After that, the incoming call processing of the communication of the second mobile communication method can be performed, which improves the usability of the mobile communication terminal.

The present invention also provides that the mobile communication terminal is
Terminate communication other than the voice call of the first mobile communication system,
When performing the incoming call processing of the communication of the second mobile communication method, the communication of the first mobile communication method is ended by a prescribed disconnection sequence for transmitting a signal indicating the end of communication.

According to the present invention, it is defined that a signal for terminating communication is transmitted when a call signal for communication in the second mobile communication method is received during communication other than voice call in the first mobile communication method. Can be terminated correctly by the disconnect sequence of.

The present invention also provides that the mobile communication terminal is
Terminate communication other than the voice call of the first mobile communication system,
When performing the incoming call processing of the communication of the second mobile communication system, the transmission of the radio wave of the first mobile communication system is stopped, and the communication of the first mobile communication system is forcibly terminated. And

According to the present invention, when the call signal of the communication of the second mobile communication system is received during the communication other than the voice call in the first mobile communication system, the radio wave of the first mobile communication system is transmitted. By stopping the transmission, it is possible to forcibly end the communication of the first mobile communication system. Therefore, immediately after receiving the call signal of the communication of the second mobile communication system, the communication of the first mobile communication system can be terminated and the incoming processing of the communication of the second mobile communication system can be performed.

The present invention also provides that the mobile communication terminal is
Terminate communication other than the voice call of the first mobile communication system,
When the incoming call processing of the second mobile communication method is performed,
When the communication of the second mobile communication system is completed, the communication of the first mobile communication system is reconnected.

According to the present invention, it is possible to reconnect communication other than the voice call of the first mobile communication system, which has been completed once, after the communication of the second mobile communication system is completed. Therefore, if the communication state of the first mobile communication method at the time of disconnection is stored and the incoming processing of the communication of the second mobile communication method is performed, the communication of the second mobile communication method is terminated and then terminated. The communication of the first mobile communication method can be restored to the state before disconnection.

Further, according to the present invention, the mobile communication terminal is
When a call signal for communication of the second mobile communication method is received during communication other than voice communication by the first mobile communication method, the priority order of the first and second mobile communication methods stored in advance and / Alternatively, whether or not to terminate the communication of the first mobile communication method and perform the incoming call processing of the communication of the second mobile communication method is determined according to the priority of the types of available communication.

According to the present invention, when the call signal of the communication of the second mobile communication system is received during the communication other than the voice call in the first mobile communication system, the first mobile communication during the communication. Whether or not to terminate the communication of the first mobile communication system and perform the incoming call processing of the communication of the second mobile communication system is selected according to the priority of the communication of the system. For this reason, even if communication is being performed in the first mobile communication system, if the priority of the communication is low, the communication in the second mobile communication system can be received.

The present invention also provides that the mobile communication terminal is
Whether or not the incoming call processing of the communication of the second mobile communication method is performed when the call signal of the communication of the second mobile communication method is received during the communication other than the voice call by the first mobile communication method, It is characterized in that it is set in advance and is determined based on a flag indicating whether or not to perform incoming call processing.

According to the present invention, when the call signal of the communication of the second mobile communication system is received during the communication other than the voice call in the first mobile communication system, the communication of the first mobile communication system is performed. Based on the flag which is set whether to terminate and perform the incoming call processing of the communication of the second mobile communication method or continue the communication of the first mobile communication method It is determined. Therefore, whether or not to perform the incoming call process can be easily changed only by rewriting the flag.

Further, according to the present invention, the mobile communication terminal is
When a call signal for communication of the second mobile communication method is received during communication other than voice communication by the first mobile communication method, the user is notified that the call signal has been received, and the first move It is characterized in that the user is allowed to select whether or not to terminate the communication of the communication method and perform the incoming call processing of the communication of the second mobile communication method.

According to the present invention, whether or not the user of the mobile communication terminal terminates the communication other than the voice call of the first mobile communication system and performs the incoming call process of the communication of the second mobile communication system. Can be selected. Therefore, even during communication by the first mobile communication method, it is possible to select a communication important to the user and receive the call.

Further, the present invention is directed to different first and second
In a recording medium recording a communication control method of a mobile communication terminal which has a transmitting / receiving function of the mobile communication method and does not perform transmission by both mobile communication methods at the same time, the first mobile communication method is added to the mobile communication terminal. When a call signal of the communication of the second mobile communication method is received during communication other than voice call, the communication of the first mobile communication method is terminated and the incoming call processing of the communication of the second mobile communication method is performed. It is a recording medium that records a communication control method for performing the above.

According to the present invention, when the call signal of the communication of the second mobile communication system is received during the communication other than the voice call in the first mobile communication system, the communication of the first mobile communication system is performed. Then, the incoming call processing of the second mobile communication method communication can be performed.

[0025]

1 is a schematic diagram showing a communication system of a mobile communication terminal 5 having transmitting and receiving functions of two mobile communication systems. The mobile communication terminal 5 includes a PDC (Personal Digital Celluar) which is a first mobile communication system and a PHS (Personal H) which is a second mobile communication system.
andy-phone System) is a composite type terminal that has the function of transmitting and receiving radio waves in a single housing.

The mobile communication terminal 5 has a PDC control unit for controlling transmission / reception of PDC radio waves and a PHS control unit for controlling transmission / reception of PHS radio waves. In the PDC control unit, PD
Radio waves are transmitted / received to / from the PDC communication network 2 via the C base station 1, and the PHS control unit uses the PHS base station 3 to transmit the PHS.
It transmits and receives radio waves to and from the communication network 4.

The PDC radio zone 7 capable of transmitting / receiving PDC radio waves and the PHS radio zone 8 capable of transmitting / receiving PHS radio waves have different ranges.
In the mobile communication terminal 5, PDC radio waves and PHS radio waves can be transmitted and received in an area where both wireless zones 7 and 8 overlap. However, if the PDC radio wave and the PHS radio wave are transmitted at the same time, unnecessary radio waves are generated due to the intermodulation distortion of the radio waves. Therefore, while the radio waves of one communication system are being transmitted, the radio waves of the other communication system are transmitted. It is prohibited to do. In addition to voice calls, the PDC communication network 2 provides services such as browsing Internet homepages and sending and receiving mail by packet communication.

Hereinafter, while the user 6 is watching the Internet information by packet communication transmitted from the PDC communication network 2 on the mobile communication terminal 5, that is, the mobile communication terminal 5 and the PDC base station 1 perform packet communication. Now, a communication control method when a PHS paging signal is transmitted from the PHS base station 3 to the mobile communication terminal 5 will be described.

When the mobile communication terminal 5 receives a PHS paging signal during communication with the PDC communication network 2, whether the incoming call processing is performed by referring to the incoming call processing flag stored in a predetermined storage area. It is determined whether or not. Here, the processing flag for an incoming call is a flag indicating a processing method when there is a call signal from another communication method during communication by a certain communication method. When the processing flag indicates an incoming call, the communication in progress is performed. Is terminated and the incoming call process is performed, and if the process flag indicates that the incoming call process is prohibited, the call signal is ignored and the communication in progress is continued.

In another communication control method, when the PHS paging signal is received during communication with the PDC communication network 2, the PHS control unit notifies the user 6 of the fact and P
The user 6 is allowed to select whether to terminate the DC communication and perform the PHS incoming call processing. As a method of notifying the user 6, it suffices to work on any sense such as sight or hearing. After that, the PHS control unit determines whether or not to perform the incoming call processing by detecting a predetermined operation performed by the user 6. If the operation of the user 6 indicates that the incoming call process is performed, the PHS incoming call process is performed, and if the operation is not performed, the call signal is ignored and the PDC communication is continued.

Further, in still another communication control method, it is determined whether or not a priority is set in advance for the type of communication such as a call and available service, here, call and packet communication, and the incoming call processing is performed according to the priority. To judge. For example, the priority of the call is set high and the priority of the packet communication is set low, so that P that is the first mobile communication system is set.
The second mobile communication system, the PH, is used while communicating with the DC.
PDC in communication when S paging signal is received
Communication is packet communication, that is, if the priority is low and does not reach a predetermined level, the PDC packet communication is terminated, PHS incoming processing is performed, and the communication of the PDC during communication is a call, that is, high priority is specified. If the level of PHS is reached, the PHS paging signal is ignored and the P
Continue the DC call.

As a method of setting the priority, the priority is set for each mobile communication system, for example, P
The priority of DC is set high and the priority of PHS is set low, or the priority is set for each mobile communication system and its communication type. For example, PDC call / packet communication and PHS call / mail transmission / reception can be performed. Priority may be set for each type of communication. In order to determine whether or not to perform the incoming call processing of the second mobile communication system, the priority levels of the communication of the first mobile communication system and the communication of the second mobile communication system which are in communication are compared. You may choose to do this. Further, it may be configured to set the above-mentioned incoming call of the processing flag or prohibit incoming call processing according to this priority.

The communication control method described above is recorded as a program in a storage medium such as a ROM (Read Only Memory) of the mobile communication terminal 5.

Next, the packet communication of the PDC is finished,
The sequence of the communication control method of the mobile communication terminal 5 when it is determined to perform the incoming call processing of the PHS voice call will be described. FIG. 2 is a sequence diagram showing a communication control method for the mobile communication terminal 5, which is an embodiment of the present invention.
In (1) of FIG. 2, the PDC controller 11 of the mobile communication terminal 5
However, when the PHS number of the mobile communication terminal 5 is dialed from another mobile communication terminal or a communication device such as an ordinary telephone during packet communication with the PDC communication network 2 via the PDC base station 1, In (2), the PHS communication network 4 simultaneously transmits paging signals to a plurality of PHS base stations within the location area near the mobile communication terminal 5. The paging signal is transmitted to the mobile communication terminal 5 by the PHS base station 3 near the mobile communication terminal 5.

The PHS controller 12 of the mobile communication terminal 5, which has received the paging signal, is an internal request for the PHS controller 12 to obtain the wireless transmission right to the PDC controller 11 in (3) of FIG. Make a wireless request. This is because, as described above, one mobile communication terminal 5 is prohibited from simultaneously transmitting the PDC radio wave and the PHS radio wave.

The PDC control unit 11 receiving the wireless right request
In (4) of FIG. 2, a packet communication registration cancellation request, which is a request for packet communication registration cancellation from the user 6, is issued to the PDC base station 1
To do. PDC that received the request to deregister packet communication
The base station 1 confirms the legitimacy of the user 6 by PDC in (5) of FIG.
The PDC control unit 11 is requested to perform packet authentication, which is a message for the communication network 2 to confirm. On the other hand, PDC
The control unit 11 transmits a packet authentication response, which is a response to the packet authentication request in (6) of FIG. 2, to the PDC base station 1. Upon receiving this, the PDC base station 1 is a message for notifying the mobile communication terminal 5 that the packet communication registration cancellation request of (4) of FIG. 2 has been received in (7) of FIG. The registration cancellation response is transmitted to the PDC control unit 11.

Upon receipt of the packet communication deregistration response, the PDC controller 11 receives the PHS controller 12 at (8) in FIG.
To the PHS and thereafter hand over the wireless transmission right to the PHS.

The PHS controller 12 which has received the wireless right executes the normal PHS incoming call processing sequence shown in (9) to (19) of FIG. 2, and at (20) of FIG. A call state is entered in which voice communication is performed with the partner communication device via the network 4. Next, the sequence of the PHS incoming call processing will be described.

(9): Link channel right establishment The PHS control unit 12 that has received the wireless right uses a common bidirectional control channel (Signal Control Channel; SCCH) and is a mobile communication terminal that is a mobile station (Personal Station; PS). The PHS base station 3 is requested to establish a link channel so that a wireless transmission path is formed between the device 5 and the PHS base station 3 (Cell Station; CS).

(10): Link channel allocation The PHS base station 3 allocates a link channel to the PHS controller 12 by using the common bidirectional restricted channel. By doing so, a wireless transmission path between PS and CS is set.

(11): The PHS control unit 12 which is called an incoming call notification notifies the PHS communication network 4 side that the incoming call is received.

(12): The call setup communication network 4 side sends a call setup message to the PHS controller 12 via the PHS base station 3.

(13): Call setup acceptance The PHS controller 12, which has received the call setup message, sends a call setup acceptance message to the PHS base station 3.

(14): Secret key setting The PHS control section 12 transmits the secret key message to the PHS base station 3 to convey its own secret key to the PHS communication network 4 side.

(15): Authentication request The PHS communication network 4 side generates an authentication random number from the PHS base station 3 and sends an authentication request message to the PHS controller 12 to notify the random number.

(16): Authentication response Upon receipt of the authentication request message, the PHS control section 12 encrypts the random number using its own authentication key and uses the authentication response message to obtain the authentication calculation result on the PHS communication network 4 side. To notify.

(17): The calling PHS controller 12 sends the calling message to the PHS communication network 4
Notify the side.

(18): When the user 6 presses the incoming call button of the mobile communication terminal 5 and goes off hook after answering the call message, the PHS controller 12 sends a reply message to the PHS base station 3. By sending it, the acceptance of the incoming call is notified to the PHS communication network 4 side.

(19): Response confirmation The PHS communication network 4 side receives the response message and then PHS
A response confirmation message is sent from the base station 3 to the PHS controller 12.

(20): The mobile communication terminal 5, which has received the response confirmation message in the PHS controller 12 during a call, enters a call state.

As described above, according to the communication control method of the mobile communication terminal 5 shown in FIG. 2, the PHS communication is performed during the communication with the PDC communication network 2.
When the paging signal is transmitted from the communication network 4, the PD
After the PDC communication is completed by the prescribed disconnection sequence for transmitting the packet communication deregistration request to the C base station 1,
Perform PHS incoming call processing.

FIG. 3 is a sequence diagram showing a communication control method of the mobile communication terminal 5 according to another embodiment of the present invention. Similar to (1) to (3) in FIG. 2, (1) to (3) in FIG. 3 indicate that the PHS base station 3 is connected to the mobile communication terminal 5 that is performing packet communication on the PDC side. When the paging signal is transmitted from the PHS control unit 12, the PHS control unit 12
To the wireless right request.

In (4) of FIG. 3, the PDC control unit 11, which has received the wireless right request from the PHS control unit 12, immediately stops the transmission output of the PDC radio wave and terminates the communication with the PDC base station 1. The wireless right is transferred to the PHS control unit 12 so that the wireless transmission right is transferred.

Then, in (5) to (15) of FIG. 3 of FIG. 3, PHS incoming processing is performed in the same manner as (9) to (19) of FIG. 2 and (16) of FIG. Enter the call state with.

As described above, according to the communication control method of the mobile communication terminal 5 shown in FIG. 3, the PHS is used during the communication with the PDC communication network 2.
When a paging signal is transmitted from the communication network 4, P
By stopping the transmission output of the packet communication transmitted to the DC base station 1, the PDC communication is forcibly terminated, and then the PHS incoming call processing is performed.

Although FIG. 2 and FIG. 3 have been described up to the point of entering the PHS communication state, the display state and the communication state are stored at the time of disconnecting the packet communication with the PDC communication network 2, and the PHS is stored. After the call with the communication network 4 is completed, the PHS control unit 1 is automatically or by a predetermined operation.
It is also possible to transfer the wireless right from 2 to the PDC control unit 11 and restore the state of PDC packet communication before disconnection.

Next, the sequence of the communication control method of the mobile communication terminal 5 when reconnecting the packet communication of the PDC after the end of the call with the PHS communication network 4 will be described. FIG. 4 is a sequence diagram showing a communication control method of the mobile communication terminal 5 according to still another embodiment of the present invention. In (1) to (20) of FIG. 4, (1) of FIG.
As in (20) of FIG. 2, a normal disconnection for transmitting a packet communication deregistration request to the PDC base station 1 when a paging signal is transmitted from the PHS communication network 4 during communication with the PDC communication network 2. After the PDC communication is completed by the sequence, the PHS incoming call process is performed to enter the talking state.

Then, during the PHS call, (2 in FIG.
When the user 6 hangs up the phone in 1), the calling side of the call opens the call path through the PHS base station 3 in (22) of FIG. 4, and the mobile communication terminal 6 side also in (23) of FIG. The call path is opened and the call path is completed. Furthermore, (24) in FIG.
Then, the PHS control unit 12 which has transmitted the disconnection signal of the wireless channel from the PHS base station 3 and has received the disconnection signal,
In (25) of FIG. 4, a disconnection confirmation signal is transmitted to the PHS base station 3, and the PHS voice call is terminated. In addition, (2 of FIG.
The call disconnection sequence shown in (1) to (25) of FIG. 4 is a sequence when the user 6 hangs up.

After that, at (26) in FIG. 4, the PHS controller 1
2 passes the wireless right to the PDC control unit 11, and the PDC control unit 11 having received the wireless right transmits a packet communication registration signal to the PDC base station 1 in (27) of FIG. Upon receiving the packet communication registration signal, the PDC base station 1 receives (2
In 8), the packet authentication request for the communication network 2 to confirm the legitimacy of the user 6 is returned to the PDC control unit 11. Upon receiving the packet authentication request, the PDC control unit 11 returns a packet authentication response, which is a response to the packet authentication request in (29) of FIG. 4, to the PDC base station 1 and receives the packet authentication response.
The DC base station 1 is at (30) in FIG. 4 and at (27) in FIG.
That the mobile communication terminal 5 has accepted the packet communication registration of
The packet communication registration response, which is a message notified to
It is transmitted to the DC control unit 11.

FIG. 5 is a sequence diagram showing a communication control method of the mobile communication terminal 5 according to still another embodiment of the present invention. In (1) to (16) of FIG. 5, the PDC communication network 2 is similar to (1) to (16) of FIG. 3 in FIGS.
After forcibly ending the PDC communication by stopping the transmission output of the packet communication transmitted to the PDC base station 1 when a paging signal is transmitted from the PHS communication network 4 during communication with , PHS incoming processing,
Enter the incoming call state.

(17) to (26) in FIG. 5 thereafter.
Is the same as (21) to (30) in FIG.
At the time of disconnecting the packet communication with the communication network 2, the display state and the communication state are stored, and the PHS communication network 4
After the call with is ended, the state of the packet communication of the PDC before disconnection is restored.

In the communication control method shown in FIGS. 4 and 5,
After the PHS voice call, it is possible to continue the communication of the PDC which has been terminated from the state immediately before the disconnection. In the present invention, the mobile communication system that is in communication first is the first mobile communication system, and the mobile communication system that later transmits the call signal is the second mobile communication system. Further, although the first mobile communication system is PDC and the second mobile communication system is PHS, the first and second mobile communication systems are not limited to this.

[0063]

As described above, according to the present invention, a mobile communication terminal having a function of transmitting and receiving radio waves of the first and second mobile communication systems which are different from each other is used in the first mobile communication system except for voice communication. When the call signal of the communication of the second mobile communication system is received during the communication, the communication of the first mobile communication system can be terminated and the incoming processing of the communication of the second mobile communication system can be performed. .

Further, according to the present invention, when the call signal of the communication of the second mobile communication system is received during the communication other than the voice call in the first mobile communication system, the signal for ending the communication is transmitted. The communication of the first mobile communication system can be ended by the prescribed disconnection sequence.

According to the present invention, when the call signal of the communication of the second mobile communication system is received during the communication other than the voice call in the first mobile communication system, the radio wave of the first mobile communication system is received. It is possible to forcibly end the communication of the first mobile communication method by stopping the transmission of the.

Further, according to the present invention, the first
It is possible to reconnect communications other than the voice call of the mobile communication system.

According to the present invention, when the call signal of the communication of the second mobile communication method is received during the communication other than the voice call in the first mobile communication method, the first mobile terminal during the communication is performed. Depending on the priority of the communication of the communication method, whether to terminate the communication of the first mobile communication method and perform the incoming call processing of the communication of the second mobile communication method is selected.

Further, according to the present invention, when a call signal for communication of the second mobile communication system is received during communication other than voice communication in the first mobile communication system, according to a preset processing method. , The communication of the first mobile communication method is terminated and the incoming processing of the communication of the second mobile communication method is performed, or the communication of the first mobile communication method is continued.

According to the present invention, the user can optionally decide whether or not to terminate the communication other than the voice call of the first mobile communication system and perform the incoming call process of the communication of the second mobile communication system. You can choose.

Further, according to the present invention, when the call signal of the communication of the second mobile communication method is received during the communication other than the voice call by the first mobile communication method, the communication of the first mobile communication method is performed. Then, the communication control method of the mobile communication terminal capable of performing the incoming call processing of the communication of the second mobile communication system is recorded in the recording medium.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing a communication system of a mobile communication terminal 5 having transmission and reception functions of two mobile communication systems.

FIG. 2 is a mobile communication terminal 5 according to an embodiment of the present invention.
It is a sequence diagram which shows the communication control method of.

FIG. 3 is a sequence diagram showing a communication control method of mobile communication terminal 5 according to another embodiment of the present invention.

FIG. 4 is a sequence diagram showing a communication control method of the mobile communication terminal 5, which is another embodiment of the present invention.

FIG. 5 is a sequence diagram showing a communication control method of the mobile communication terminal 5, which is still another embodiment of the present invention.

[Explanation of symbols]

1 PDC base station 2 PDC communication network 3 PHS base station 4 PHS communication network 5 Mobile communication terminals 6 users 7 PDC wireless zone 8 PHS wireless zone 11 PDC control unit 12 PHS controller

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-10-313486 (JP, A) JP-A-11-8886 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) H04B 7/24-7/26 H04Q 7/00-7/38

Claims (8)

(57) [Claims] 1. A communication control method for a mobile communication terminal, which has transmission and reception functions of different first and second mobile communication methods and does not perform transmission by both communication methods at the same time, wherein the mobile communication terminal comprises: When a call signal for communication of the second mobile communication system is received during communication other than voice communication by the first mobile communication system, the communication of the first mobile communication system is terminated and the second mobile communication is completed. A method of controlling communication of a mobile communication terminal, characterized by performing an incoming call process of a standard communication. 2. A signal indicating the end of communication when the mobile communication terminal terminates communication other than voice communication of the first mobile communication system and performs incoming call processing of communication of the second mobile communication system. The communication according to the first mobile communication method is ended by a prescribed disconnection sequence for transmitting the message.
A method for controlling communication of a mobile communication terminal as described. 3. The mobile communication terminal, when terminating communication other than voice communication of the first mobile communication system and performing incoming call processing of communication of the second mobile communication system, the first mobile communication system. The communication of the first mobile communication system is forcibly ended by stopping the transmission of the radio wave of the system.
A method for controlling communication of a mobile communication terminal as described. 4. The mobile communication terminal, when terminating communication other than voice communication of the first mobile communication method and performing incoming call processing of communication of the second mobile communication method, performs second mobile communication. 4. The communication control method for a mobile communication terminal according to claim 1, further comprising reconnecting the communication of the first mobile communication method when the communication of the communication method is completed. 5. The first mobile communication terminal is stored in advance when a call signal for communication of the second mobile communication system is received during communication other than voice communication by the first mobile communication system. Depending on the priority of the second mobile communication method and / or the priority of the type of available communication, the communication of the first mobile communication method is terminated and the incoming processing of the communication of the second mobile communication method is performed. The communication control method for a mobile communication terminal according to any one of claims 1 to 4, wherein it is determined whether or not it is determined. 6. The mobile communication terminal, when receiving a call signal for communication of the second mobile communication method during communication other than voice communication by the first mobile communication method, the second mobile communication method. The mobile communication according to any one of claims 1 to 5, wherein whether or not to perform the incoming call processing of the communication is set in advance and is determined based on a flag indicating whether or not to perform the incoming call processing. Communication control method for terminals. 7. The mobile communication terminal receives a calling signal when receiving a calling signal for communication of the second mobile communication method during communication other than voice communication by the first mobile communication method. A notification is made to the user, the communication of the first mobile communication system is terminated, and the user is allowed to select whether or not to perform the incoming call processing of the communication of the second mobile communication system. 5. A communication control method for a mobile communication terminal according to any one of 1 to 4. 8. A recording medium having a communication control method for a mobile communication terminal, which has transmitting and receiving functions of different first and second mobile communication systems, and which does not perform transmission by both mobile communication systems at the same time, When the mobile communication terminal receives a call signal for communication of the second mobile communication method during communication other than voice communication by the first mobile communication method, the communication of the first mobile communication method is terminated. , A recording medium recording a communication control method for performing an incoming call process of communication of the second mobile communication system.