JPH08331643A - Mobile terminal additional service offering system and base station - Google Patents

Abstract

PURPOSE: To offer the additional service to a mobile terminal by changing only the resources of a mobile network. CONSTITUTION: A mobile terminal 31-1 has an additional service instruction input part 31-1a to instruct the switching of a terminal of the opposite party of communication to another terminal or the 3-party call connection, etc. A service controller 33 stores the terminal information 33a to offer the additional service. A base station 32-1 includes a connection switch means 30-1 which controls the connection states of calls to offer the additional service, a mixing part 36-1 which synthesizes and outputs the call signals received from three terminals of the 3-party calls including the mobile terminal corresponding to the additional service, and a sound source part 37-1 which generates a holding tone, an incoming notification tone, etc., to attain the offer of the additional service.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile terminal supplementary service providing system and a base station. For example, a supplementary service such as a three-way call or call waiting is applied to a PHS terminal of a simple portable telephone system (PHS). It's something I got to get.

[0002]

2. Description of the Related Art An existing mobile communication system provides a three-way call or call waiting service providing system as shown in FIG. That is, the base stations 12-1, ..., 12-3 and the fixed terminals 14-1, 14-2.
A three-way call mechanism section 15 and a call waiting mechanism section 16 are provided in an exchange (any of a central office exchange, a private branch exchange, and a mobile exchange) for exchanging a call from the. Provide three-way calling and call waiting services.

For example, the mobile terminal 11 and the fixed terminal 14-
When there is a call from the other fixed terminal 14-2 to the mobile terminal 11 while 1 is in a call, the call waiting mechanism unit 16 notifies the mobile terminal 11 that there is an incoming call. In response to this, when the mobile terminal 11 issues a switching request, the call waiting mechanism unit 16 puts the mobile terminal 11 and the fixed terminal 14-2 into a call and puts the fixed terminal 14-1 into the waiting state. Further, when the mobile terminal 11 issues a three-party call connection request for an incoming call, the three-party call mechanism unit 15 causes the three parties of the mobile terminal 11, the fixed terminal 14-1, and the fixed terminal 14-2 to talk. To

In addition, for example, when the mobile terminal 11 issues a three-party call start request including a call request to another fixed terminal 14-2 while the mobile terminal 11 and the fixed terminal 14-1 are in a call, 3 The person-to-person communication mechanism unit 15 includes the mobile terminal 11,
The three parties, the fixed terminal 14-1 and the fixed terminal 14-2, are brought into a call state.

Here, the request by the operation of the mobile terminal 11 and the notification from the exchange 13 are ISD if the interface between the base station 12-1 and the exchange is the I interface.
It is realized by the ISDN supplementary service control procedure instead of the N basic service control procedure, and is realized by the control procedure which is not used in call connection such as hooking or special number if it is an analog interface.

[0006]

By the way, there are cases where different businesses connect to each other to provide telecommunication services. For example, in the PHS, which is about to start operating, as shown in FIG. 3, the digital network operator 29 operating the exchange 24 and the PHS terminal (PS) 21
It is different from the PHS operator 28 that operates the base stations (CS) 22-1 to 22-3 and the service control device 23.

Since there is no mobile switch in the resources operated by the PHS operator 28, if an additional service such as a three-way call or call waiting is provided to the PHS terminal 21, the switch in the digital network will be used. It is conceivable to use the three-party call mechanism unit 26 and the call waiting mechanism unit 27 of 24.

In this case, the PHS operator 28 and the digital network operator 29 need to cooperate with each other, and the PHS terminal 21
From the user's point of view, the financial burden is heavy. Further, the base stations 22-1 to 22-3 and the exchange (digital network) 24 are connected by an I ′ interface similar to the above I interface, and information exchange for providing additional services is performed by ISDN additional services. The control procedure must be followed. Therefore, in order to provide the additional service, the base stations 22-1 to 22-3 and the exchange (digital network)
It is necessary to improve the internal configuration of 24 and add functions, and the number of improvements in the entire system is considerably increased.

Therefore, there is a demand for a new technology capable of providing the PHS terminal 21 with additional services such as three-way calling and call waiting, simply by improving the resources operated by the PHS carrier 28 and adding functions. .

[0010]

In order to solve the above problems, the first aspect of the present invention is to provide a mobile terminal supplementary service providing system for providing a call waiting service to a mobile terminal. A request generation means for generating a request for switching the other terminal in the second terminal between the first and second terminals and a request for making a call to the second terminal during a call with the first terminal are provided, and (B) the base station , (B-1) sound source means for generating a control sound necessary for the call waiting process, and (B-2) a switching request from the mobile terminal targeted for the call waiting service, to set the other terminals in the call to the first and the second. While switching between the two terminals, and during the communication between the mobile terminal and the first terminal, by the call request from the mobile terminal to the second terminal or the call request from the second terminal to the mobile terminal. , Call Waiting And (C) the service control device for authenticating the communication of the mobile terminal, stores the information of the mobile terminal that may be the target of the call waiting service, and stores it in the base station at a predetermined timing. It is characterized in that a serviceable mobile terminal storage means for transmitting the information is provided.

The second aspect of the present invention is characterized by the configuration of the base station.

In order to solve the above problems, a third aspect of the present invention is a mobile terminal supplementary service providing system for providing a three-party call service to a mobile terminal, wherein (a) a three-party call request is issued to the mobile terminal. (B)
In the base station, (b-1) sound source means for generating a control sound necessary for three-party call processing, (b-2) mobile terminal for three-party call service, and other first and second terminals Mixing means for synthesizing a call signal from the mobile terminal, and (b-3) giving a call signal from the mobile terminal and the first and second terminals to the mixing means in response to a request from the mobile terminal targeted for the three-party call service. , The synthetic call signal from the mixing means, the mobile terminal,
And a connection switching means for transmitting to the first and second terminals,
(c) Service-enabled mobile terminal storage that stores information of mobile terminals that can be targets of three-way calling service in a service control device that performs communication authentication processing of mobile terminals and that information is transmitted to a base station at a predetermined timing Means are provided.

A fourth aspect of the present invention is characterized by the configuration of the base station.

[0014]

In the first and second aspects of the present invention, in the base station provided with the information of the mobile terminal which can be the object of the call waiting service from the serviceable mobile terminal storage means, the connection switching means is the mobile terminal and the first terminal. During communication with the other terminal, a call is being made to one of the first and second terminals due to a call request from the mobile terminal to the second terminal or an incoming call request from the second terminal to the mobile terminal. Then, on the other hand, it shifts to a call waiting state in which the sound source means transmits a holding tone. Further, when a request for switching between terminals is given from the request generating means of the mobile terminal, the connection switching means switches between the other terminal in communication and on hold.

As a result, the call waiting service can be provided to the mobile terminal without modifying the configuration of the wired network side of the mobile communication system or adding the function.

In the third and fourth aspects of the present invention, in the base station to which the serviceable mobile terminal storage means is given the information of the mobile terminal which can be a three-party call service, the connection switching means of the base station is mobile. When the three-party call request is received from the request generation means of the terminal, the call signals from the first and second terminals and the mobile terminal, which is the target of the three-party call, are given to the mixing means and combined, and at the same time, from the mixing means. The combined call signal is transmitted to the mobile terminal and the first and second terminals. The sound source means generates a control sound such as an incoming call notification sound necessary for the three-party call processing.

As a result, the three-party call service can be provided to a predetermined mobile terminal without modifying the configuration of the wired network side of the mobile communication system or adding a function.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A mobile terminal supplementary service providing system and a base station according to the present invention will be described below in detail with reference to the drawings showing an embodiment in which the PHS is applied.

(A) Configuration of Embodiment FIG. 1 is a functional block diagram showing the overall configuration of a PHS according to this embodiment.

In FIG. 1, in this system, the PHS
When providing an additional service such as a three-way call or call waiting to the terminal, the digital network 39 having the exchange 34 has not been modified or added any function, and the three-way call (not shown) in the digital network 39 is performed. The mechanical part and the call waiting mechanism part are not used.

On the other hand, the P which constitutes the PHS network 38
HS terminal (represented by PS in the drawing) 31-1, base station (represented by CS in the drawing) 32-1 to 32-
3. The service control device 33 is modified from the conventional configuration so that the PHS terminal 31-1 can be provided with an additional service such as a three-way call or call waiting.

The PHS terminal 31-1 is provided with an additional service instruction input unit 31 for instructing to switch the terminal (fixed terminal or PHS terminal) of the call partner to another terminal or for instructing three-way call connection. -1a is provided.

PHS terminal information, authentication information, etc. are accumulated and P
In the service control device 33 that controls the HS service, PHS terminal information 33a for which an additional service contract is concluded is also stored. The supplementary service contract may be a contract in which both the three-party call service and the call waiting service are combined, or may be an individual contract for the three-party call service and the call waiting service. In the description of this embodiment, the PHS terminal 31-1 is
The PHS terminal has an additional service contract.

In order to realize the supplementary service, each of the base stations 32-1, ..., 32-3 has a general structure as a base station, and a supplementary service provision control unit (connection switching means) 30-1, ..., 30-3 and mixing section 36-
, ..., 36-3 and sound source units 37-1, ..., 37-3.

Additional service provision control units 30-1, ..., 3
0-3 responds to a command or the like from the PHS terminal 31-1,
The call connection state is controlled so that the PHS terminal 31-1 having the additional service contract can be provided with the additional service. For example, the base station is used in terms of hardware by a wireless interface unit, a wired interface unit, a switch unit for exchanging wireless channels and wired channels, a central processing unit (CPU) for controlling a call sequence, and a central processing unit. The additional service provision control units 30-1, ...
-3 is configured. The control content of the additional service provision control units 30-1, ..., 30-3 will be clarified in the description of the operation example described later.

The mixing sections 36-1, ..., 36-3 are
This is to synthesize and output call signals from three terminals related to a three-way call including the PHS terminal 31-1 having an additional service contract.

The sound source units 37-1, ..., 37-3 generate a holding sound, an incoming call notification sound, etc. required to realize the provision of the additional service. In general, a sound source unit is not provided in the base station, and the control sound necessary for the PHS is generated by the sound source unit in the digital network. However, in this embodiment, the additional service is provided only by the PHS network. In order to provide the sound source section 37-1, ..., 32-3 to the sound source section 37-1,
..., 37-3 are provided.

(B) Acquisition Operation of Availability Information of Additional Service Providing PHS Terminal Next, the PHS terminal 31 having an additional service contract.
The operation when the base station 32-1 accommodating -1 acquires the information 33a indicating that the PHS terminal 31-1 is a PHS terminal that has a supplementary service contract is described.

In FIG. 4, the PHS terminal 31-1 is the fixed terminal 3
5 shows a general call sequence when calling 5-1. In FIG. 5, the fixed terminal 35-1 is the PHS terminal 31-.
1 shows a general call sequence for calling 1. In any case, the base station 32-1 accommodating the PHS terminal 31-1 informs the service control device 33 of the PHS terminal 31-.
Authentication processing part (N) in which the service control device 33 requests the terminal information of 1 and notifies the base station 32-1 of the terminal information.
Exists. At this time, the service control device 33 includes, in the terminal information to be notified, information 33a indicating that the PHS terminal 31-1 is a PHS terminal that has an additional service contract.

The base station 32-1 uses the notified terminal information as the PHS terminal information 3 for which the supplementary service contract has been concluded.
If 3a is included, the additional service provision control unit 30-
If the information 33a is not included, the additional service provision control unit 30-1 is set to a state in which it cannot function. Since the PHS terminal 31-1 is a PHS terminal that has a supplementary service contract, the base station 32-1 puts the supplementary service provision control unit 30-1 into a state of effectively functioning through the authentication processing.

The base station 32 also performs an authentication process other than the authentication process (N) when the call connection shown in FIGS. 4 and 5 is performed.
-1 is information 33a indicating whether or not the target PHS terminal 31-1 is a PHS terminal that has an additional service contract.
You may make it take in. For example, the PHS terminal 31-
The information 33a may be taken in also in the authentication processing at the time of position registration operation when the power is turned on.

(C) First Example of Additional Service Providing Operation FIG. 6 is a call sequence diagram showing a first example of the additional service providing operation in this embodiment.

(C-1) PHS terminal 31-1 and fixed terminal 3
It is assumed that 5-1 is in a talking state by the call establishing operation of FIG. 4 or 5 described above. The base station 32-1
Recognizes through the acquisition operation (B) that the PHS terminal 31-1 is a terminal capable of providing additional services. In this state, the other fixed terminal 35-2 is the PHS.
When an incoming call request is sent to the terminal 31-1, and the incoming request reaches the base station 32-1, the base station 32-1
(Additional service provision control unit 30-1) is the PHS terminal 3
The sound source unit 37-1 is connected to the wireless channel to 1-1 to transmit an incoming call notification sound, and the PHS terminal 31-1 is notified that there is an incoming call request. FIG. 7 shows a connection image between the respective components at this point. The base station 32
-1 is a PHS terminal 31- by another fixed terminal 35-2
At the time of the incoming call request for 1, the authentication processing for the PHS terminal 31-1 has already been performed at the time of call connection with the fixed terminal 35-1, so that no new authentication processing is performed.

Here, various signals for call waiting and three-way communication are sent to the PHS terminal 31-1 and the base station 32.
The procedure of exchanging data between -1 may follow the procedure that will be standardized in the future, or may follow the procedure arbitrarily determined by the PHS operator. The features of this embodiment do not exist here.

(C-2) In response to the incoming call notification sound, the user inputs the additional service instruction input section 31-1 of the PHS terminal 31-1.
When the PHS terminal 31-1 issues a call switching request to the a, the base station 32-1 determines that the fixed terminal 35-1
-2, the PHS terminal 31-1 responds to the incoming call request.
Also, the telephone between the fixed terminals 35-2 is put into a call, and the sound source section 37-1 is connected to the wired channel to the fixed terminal 35-1 to transmit the hold tone. FIG. 8 shows a connection image between the respective components at this point.

The hold tone signal appears as a general call signal from the digital network 39. In addition, the base station 32-
Since the interface (I ′ interface) between the 1 and the digital network 39 has a plurality of channels (B channels of 2 × n (n is a natural number)), a plurality of calls can exist simultaneously as described above. it can.

(C-3) One such fixed terminal 35-1
In a state in which the call with the user is on hold, in response to the user's operation on the additional service instruction input unit 31-1a, P
When there is a call switching request from the HS terminal 31-1,
The fixed terminal 35-1 and the PHS terminal 31 which are on hold until now
-1 is put into a call, and the hold tone from the sound source unit 37-1 is transmitted to the fixed terminal 35-2 which has been in a call.

(C-4) In this state, in response to the user's operation on the additional service instruction input unit 31-1a, P
When the HS terminal 31-1 issues a request for switching to the three-party call and the base station 32-1 receives the request, the base station 32-1
3 by using the mixing unit 36-1 provided by itself
The call signals from the individual terminals 31-1, 35-1, and 35-2 are combined, and the combined call signal is generated by each of the terminals 31-1, 35-.
1 and 35-2 are transferred to the three-party call state. FIG. 9 shows a connection image between the respective components at this point.

By operating as described above, the PHS terminal 31-
1 is provided with call waiting and three-way calling service with the fixed terminals 35-1 and 35-2.

When the PHS terminal 31-1 terminates the call in the three-party call state or the call waiting state, the base station 32-1 terminates all the calls, and in the three-party call state or the call waiting state, Fixed terminal 35
When -1 or 35-2 terminates the call, the normal two-party call state is restored.

(D) Second Example of Additional Service Providing Operation FIG. 10 is a call sequence diagram showing a second example of the additional service providing operation in this embodiment.

(D-1) PHS terminal 31-1 and fixed terminal 3
It is assumed that 5-1 is in a talking state by the call establishing operation of FIG. 4 or 5 described above. The base station 32-1
Recognizes through the acquisition operation (B) that the PHS terminal 31-1 is a terminal capable of providing additional services. In this state, the PHS terminal 31-in response to the user's operation on the additional service instruction input unit 31-1a.
When 1 sends a three-party call start request (including a call request to the fixed terminal 35-2) and reaches the base station 32-1, the base station 32-1 (additional service provision control unit 30-1)
Connects the sound source unit 37-1 to the fixed terminal 35-1 that was in the call until now, transmits the hold tone, and executes the call connection operation to the other fixed terminal 35-2 to connect. After the end, the PHS terminal 31-1 and the fixed terminal 35-2 are in a call state. In this case, the connection image between each part configuration is
This is shown in FIG. 8 described above.

(D-2) One such fixed terminal 35-1
In the state where the call to the user is on hold, the PH corresponding to the operation on the additional service instruction input unit 31-1a by the user
If there is a call switching request from the S terminal 31-1,
The base station 32-1 is the fixed terminal 35-1 that is on hold until now.
The PHS terminal 31-1 and the PHS terminal 31-1 are in a call, and the hold tone is transmitted to the fixed terminal 35-2 that was in the call.

(D-3) In this state, the base station 32-1
When the PHS terminal 31-1 receives the request for switching to the three-party call, the base station 32-1 uses the mixing unit 36-1 provided by itself to provide the three terminals 31-1 and 35.
-1 and 35-2 are combined and the combined call signal is transferred to each of the terminals 31-1, 35-1, and 35-2 to shift to a three-party call state (see FIG. 9).

The three terminals 31-1, 35-
The termination processing from the three-party call state of 1 and 35-2 is as described above.

In FIG. 10, when there is a three-party call start request, when a connection with a new fixed terminal 35-2 is terminated, a hold tone is output to the already connected fixed terminal 35-1 (FIG. 10). Although the sequence example of 8) has been described, it goes without saying that the three-party call state (FIG. 9) may be immediately set upon completion of connection with the new fixed terminal 35-2.

(E) Third Example of Additional Service Providing Operation FIG. 11 is a call sequence diagram showing a third example of the additional service providing operation in this embodiment.

(E-1) PHS terminal 31-1 and fixed terminal 3
It is assumed that 5-1 is in a talking state by the call establishing operation of FIG. 4 or 5 described above. The base station 32-1
Recognizes through the acquisition operation (B) that the PHS terminal 31-1 is a terminal capable of providing additional services. In this state, P from another PHS terminal 31-2
When there is an incoming call request to the HS terminal 31-1, the base station 32-
1 (additional service provision control unit 30-1) connects the sound source unit 37-1 to the wireless channel to the PHS terminal 31-1 and transmits the incoming call notification sound. FIG. 12 shows a connection image between the respective components at this point.

Although FIG. 11 and FIG. 12 show that the other PHS terminal 31-2 is also accommodated in the base station 32-1, it is accommodated in the other base stations 32-2 and 32-3. Needless to say, it may be the one already used. Even in this case, the base station 32-1 accommodating the PHS terminal 31-1 to be serviced executes the additional service providing operation.

Although omitted in FIG. 11, another P
In response to an incoming call request from the HS terminal 31-2, the base station 3
Of course, 2-1 executes an authentication process through communication with the service control device 33. On the other hand, when the base station 32-1 makes an incoming call request to the PHS terminal 31-1 by another PHS terminal 31-2, the base station 32-1 has already performed an authentication process for the PHS terminal 31-1 at the time of call connection with the fixed terminal 35-1. Since it has been performed, no new authentication process is executed.

(E-2) In response to this incoming call notification sound, the user inputs the additional service instruction input section 31-1 of the PHS terminal 31-1.
When the PHS terminal 31-1 issues a call switching request, the base station 32-1 switches the PHS terminal 3 to
After responding to the incoming call request from 1-2, the PHS terminal 31-
1 and the PHS terminal 31-2 are in a call, and the sound source section 37-1 is connected to the wired channel to the fixed terminal 35-1 to transmit the hold sound. FIG. 13 shows a connection image between the respective components at this point.

(E-3) When a call switching request is issued from the PHS terminal 31-1 in the state where the call with the fixed terminal 35-1 is held, the base station 32-1
The fixed terminal 35-1 and the PHS terminal 31 which are on hold until now
-1 is put in a call, and a hold tone is transmitted to the PHS terminal 31-2 which was in a call.

(E-4) In this state, the base station 32-1
When the PHS terminal 31-1 receives the request for switching to the three-party call, the base station 32-1 uses the mixing unit 36-1 provided by itself to provide the three terminals 31-1 and 31.
-2 and 35-1 are combined and the combined call signal is transmitted to each of the terminals 31-1, 31-2, and 35-1 to shift to a three-party call state. FIG. 14 shows a connection image between the respective components at this point.

As described above, the PHS terminal 31 to be serviced
-1 is not limited to a fixed terminal as a terminal that can be a target of call waiting or three-way calling. In addition, the call termination processing is as described above.

(F) Effect of Embodiment According to the above embodiment, the base station is provided with the additional service provision control unit (connection switching unit), the mixing unit and the sound source unit to provide the additional service to the PHS terminal. Therefore, there is no need to modify or add functions to provide additional services related to the digital network side, additional services can be provided only on the PHS network side, and the number of changes in the entire system can be minimized. You can As a result, P
The HS business alone can provide additional services.

Further, according to the above-mentioned embodiment, a dedicated signal relating to a supplementary service is not exchanged between the PHS network and the digital network, and only the interface which follows the basic procedure is required. It can be stopped to a minimum.

(G) Other Embodiments In the description of the above embodiment, some modified other embodiments have been described, but the following other embodiments can be mentioned.

(1) In the above embodiments, all base stations are provided with the additional service providing structure, but some base stations may be provided with the additional service providing structure. In this case, in response to the PHS terminal from the base station at the time of location registration, the PHS terminal sends information to the PHS terminal indicating whether or not the base station has a function capable of providing additional services. Accordingly, the indicator may be displayed on / off. In addition, a base station that does not have a supplementary service providing configuration does not directly connect a call with a PHS terminal to a partner terminal, but connects through a base station (which may be a pseudo base station) having a supplementary service providing configuration. Alternatively, an additional service may be provided (necessary to appropriately change the location registration operation).

(2) In the above embodiment, the PHS terminals that can provide the additional service are contracted, but the additional services may be provided to all the PHS terminals. ． In this case, the terminal information indicating whether the PHS service can be provided becomes the terminal information indicating whether the additional service can be provided as it is. Further, a PHS terminal that does not have an operation function corresponding to an additional service as an input operation function of the PHS terminal may be provided with the additional service or may be excluded from the terminal information.

(3) In the above embodiment, the present invention is applied to PH.
Although the present invention is applied to S, the present invention may be applied to other mobile communication systems because a functional unit may be provided for providing a supplementary service to mobile network resources such as a base station. can do. For example, the present invention can be applied to a mobile communication system in which a wired network is divided into a mobile communication network and a public network. Therefore, the interface between the base station and the network side is not limited to the I'interface.

[0061]

As described above, according to the first and second aspects of the present invention, the connection switching is performed in the base station given the information of the mobile terminal which can be the target of the call waiting service from the serviceable mobile terminal storage means. During the communication between the mobile terminal and the first terminal, the means sends a first call request to the second terminal from the mobile terminal or a second call request to the mobile terminal from the second terminal When one of the terminals is in a call and the other side is put into a call waiting state in which a hold tone is transmitted by the sound source means, and when the request generation means of the mobile terminal gives a switching request between the terminals, the connection switching means Since the other terminal that is on call and on hold is switched to each other, the mobile network resource changes without modifying the wired network side configuration of the mobile communication system or adding functions. It is possible to provide a call waiting service for the mobile terminal only.

Further, according to the third and fourth aspects of the invention, in the base station given the information of the mobile terminal which can be the object of the three-party call service from the serviceable mobile terminal storage means, the connection switching means of the base station. When receiving the three-party call request from the request generation means of the mobile terminal, the mobile terminal, which is the target of the three-party call, gives the call signals from the first and second terminals to the mixing means and combines them, and at the same time, the mixing is performed. Since the composite call signal from the means is transmitted to the mobile terminal and the first and second terminals, the mobile network is not modified or the function is added without modifying the configuration of the wired network side of the mobile communication system. It is possible to provide the three-party call service to the mobile terminal by simply changing the resource.

[Brief description of drawings]

FIG. 1 is a block diagram showing an overall configuration of an embodiment.

FIG. 2 is a block diagram showing a conventional additional service providing configuration.

FIG. 3 is an explanatory diagram of a conventional problem.

FIG. 4 is a sequence diagram (No. 1) when the base station acquires terminal information indicating whether or not the terminal is a target terminal of the additional service in the embodiment.

FIG. 5 is a sequence diagram (No. 2) when the base station acquires the terminal information indicating whether or not the terminal is a target of the additional service in the embodiment.

FIG. 6 is a sequence diagram showing an additional service providing operation example (No. 1) of the embodiment.

FIG. 7 is an image diagram (part 1) of a connection state of each part when the additional service is provided according to the embodiment.

FIG. 8 is an image diagram (part 2) of connecting states of respective parts when the additional service is provided according to the embodiment.

FIG. 9 is a diagram (part 3) of a connection state image of each part when the additional service is provided according to the embodiment.

FIG. 10 is a second example of the additional service providing operation according to the embodiment.
It is a sequence diagram showing.

FIG. 11 is an operation example (3) of providing an additional service according to the embodiment.
It is a sequence diagram showing.

FIG. 12 is an image diagram (part 4) of a connection state of each part when the additional service is provided according to the embodiment.

FIG. 13 is an image diagram (part 5) of connecting states of respective parts when the additional service is provided according to the embodiment.

FIG. 14 is an image diagram (part 6) of connecting states of respective parts when the additional service is provided according to the embodiment.

[Explanation of symbols]

30-1 to 30-3 ... Additional service provision control unit (connection switching means), 31-1, 31-2 ... PHS terminal (PS), 32-1 to 32-3 ... Base station (CS), 33 ... Service Control device, 36-1 to 36-3 ... Mixing unit, 37-1 to 37-3 ... Sound source unit.

Claims (4)

[Claims] 1. A mobile terminal supplementary service providing system for providing a call waiting service to a mobile terminal, comprising: requesting the mobile terminal to switch a partner terminal in a call between a first terminal and a second terminal; Request generating means for generating a call request to the second terminal during a call with the terminal, and a sound source means for generating a control sound necessary for the call waiting process in the base station; In response to a switching request from the mobile terminal, the other terminal in the call is switched between the first and second terminals, and during communication between the mobile terminal and the first terminal, the second terminal from the mobile terminal And a connection switching means for shifting to a call waiting state in response to a call request to the mobile terminal or a call request to the mobile terminal from the second terminal. The service control device that performs the authentication process of the communication is provided with serviceable mobile terminal storage means for storing the information of the mobile terminal that can be the target of the call waiting service and transmitting the information to the base station at a predetermined timing. A featured mobile terminal additional service providing system. 2. In a base station of a mobile communication system, a sound source means for generating a control sound required for call waiting processing, and a switching request from a call waiting service target mobile terminal are used to identify a partner terminal in a call. While switching between the first and second terminals, during the communication between the mobile terminal and the first terminal, the mobile terminal makes a call request to the second terminal or the second terminal moves. A base station provided with connection switching means for shifting to a call waiting state in response to an incoming call request to a terminal. 3. A mobile terminal supplementary service providing system for providing a three-party call service to a mobile terminal, wherein the mobile terminal is provided with request generation means for generating a three-party call request, and the base station is provided with a three-party call. Sound source means for generating a control sound required for processing, the above-mentioned mobile terminal for three-party call service, mixing means for synthesizing call signals from other first and second terminals, and three-party call service target In response to a request from the mobile terminal, the call signal from the mobile terminal and the first and second terminals is given to the mixing means, and the combined call signal from the mixing means is sent to the mobile terminal, the second A connection control means for transmitting to the first and second terminals is provided, and a service control device for authenticating communication of the mobile terminal is provided to A mobile terminal supplementary service providing system characterized by comprising serviceable mobile terminal storage means for storing information and transmitting the information to the base station at a predetermined timing. 4. In a base station of a mobile communication system, a sound source means for generating a control sound required for three-party call processing, a mobile terminal targeted for three-party call service, and other first and second units.
Mixing means for synthesizing a call signal from the terminal, and a call signal from the mobile terminal and the first and second terminals is given to the mixing means in response to a request from the mobile terminal subject to the three-party call service. At the same time, the base station is provided with connection switching means for transmitting the composite call signal from the mixing means to the mobile terminal and the first and second terminals.