JPH10276472A - Called subscriber state notification system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a called subscriber state notification system which detects a state in which an incoming subscriber can receive an incoming access and notifies it to the mobile radio telephone of a calling subscriber when an incoming call comes to a subscriber who can not accept the incoming call in a mobile communication system. SOLUTION: This system is provided with a mobile exchange 1, radio base stations 2 to 4 and mobile radio telephones 5 to 7, and the exchange 1 is provided with a mobile exchange 11 that contains the stations 2 to 4, an announcing device 13 that notifies a calling subscriber of the propriety of an access state of a called subscriber through voice and a subscriber control database 12 which stores a call address that is registered by a calling subscriber. The exchange 11 detects a state in which a called subscriber shifts from when an incoming call reaches the mobile radio telephone 5 that can not receive the incoming call to when he can receive it and notifies it to a mobile radio telephone 5 of a calling subscriber.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for notifying a subscriber state, and more particularly to a method for notifying a subscriber state in a mobile communication system.

[0002]

2. Description of the Related Art Conventionally, when a caller dials a desired called subscriber's number and the called subscriber is in a call with a third party, the caller informs the called subscriber of a request. The first method is to have the incoming telephone record the caller's requirements or ask a third party for a message. The first method is to record the caller's number and have the caller return when the called party ends the call. Second method (so-called camp-on method) There is a third method (so-called call-waiting method) for notifying a receiving subscriber during a call that there is another incoming call.

As a fourth prior art method of automatically calling the other party when the other party's telephone becomes idle while the caller is busy waiting, Japanese Patent Laid-Open No. 5-130230 has been disclosed.
Japanese Patent Application Laid-Open Publication No. HEI 9-260, "Telephone exchange and telephone exchange method".

FIG. 5 is a flowchart for explaining the operation of a conventional telephone exchange, which is equivalent to the flowchart described in the above publication.

Referring to FIG. 5, in the conventional telephone exchange of the fourth system, when the number of the called telephone is dialed from the calling telephone (step S501), the dialing number is analyzed by the dial analyzing means to receive the dialed number. The calling telephone is specified (step S502).

Then, it is checked whether or not the called telephone is empty (step S503), and if it is empty (YE at S503).
S) A ringing tone is transmitted to the called telephone (step S50).
9), a call path is formed by the called party response (step S5)
10). When the called telephone is busy (S503).
NO), a busy tone is sent to the calling telephone, and an indication that "the calling telephone is busy waiting" is stored in the called memory of the call control memory (step S504).

Next, it is checked whether there is an incoming call from the third telephone (step S505) and whether the calling telephone is off-hook (step S506). Here, YES, that is, the calling telephone is off-hook If it is, it is detected whether or not the called telephone is idle (step S50).
7).

[0008] Then, the calling telephone goes off-hook (S50).
While the answer is YES in step S6, the called telephone becomes idle (S50).
If "YES" at step 7), the exchange reads out the called telephone and the calling telephone from the call control memory if the busy control display is stored in the call control memory (step S508), and the called telephone emits a ringing tone. The call is transmitted (step S509), and a ring back sound is sent to the calling telephone.

When the called telephone goes off-hook, the ringing tone and the ringing tone being transmitted are stopped to form a communication path between the two telephones (step S510), and at the same time a busy standby display stored in the call control memory. To delete.

In this way, even if the called telephone is busy, if the calling telephone is off-hook and waiting, the two telephones are automatically connected when the called telephone ends. You.

If the calling telephone goes on-hook (NO in S506) before the called telephone becomes idle (NO in S507), the busy standby display stored in the call control memory is erased. (Step S511).

That is, the on-hook detection signal of the calling telephone performs an abandonment process, stops sending a busy tone to the calling telephone, examines the contents of the call control memory, and erases all indications of busy standby. Leave the calling phone idle.

Further, when there is an incoming call from the third telephone to the calling telephone in standby (YES in S505), the display of busy standby in the call control memory and the destination are erased, and the calling telephone is erased. Is set to an empty state (step S512). Thereafter, it is displayed that there is an incoming call from the third telephone on the calling telephone and the two telephones are connected (step S51).
3).

[0014] In this way, since the calling telephone can be immediately connected to the third telephone while waiting, the third telephone does not have to call the calling telephone again.

[0015]

According to the first conventional method, a caller can transmit a message only in an environment where the receiving telephone can record or receive a message. There is a problem that whether or not the message is transmitted reliably cannot be determined by the caller unless the caller confirms with the called subscriber.

In the second, third, or fourth conventional method, the caller must wait off-hook until the other party terminates or interrupts the current call. When on-hook in the middle, it is not only troublesome because it is abandoned on the way and it is necessary to repeat the call to the other party, and when these methods are applied to the mobile communication system, the caller is, for example, driving a car, etc.
There is a problem in that there is an incoming call from the other party even when the caller does not want to receive a call, and furthermore, there is a problem that the receiving side having no business needs to call back and place a call, so that the receiving side is burdened.

[0017] An object of the present invention is to detect a state in a mobile communication system when an incoming call is received by a subscriber in a state where the incoming call cannot be connected and when the incoming call can be connected to the incoming call. It is an object of the present invention to provide a called subscriber status notification method for notifying a mobile radio telephone of a calling subscriber.

[0018]

According to the present invention, in a mobile communication system including a mobile switching center, a radio base station, and a mobile radio telephone, the mobile switching center is in a state where incoming connection is impossible. A receiving means for receiving an incoming call to a subscriber and detecting the state after the transition to a state where the incoming subscriber can connect to the incoming call and notifying the mobile radiotelephone of the calling subscriber; A subscriber status notification method is obtained.

When a call arrives at the subscriber in a state where the incoming connection is not possible, the mobile switching center prompts the calling subscriber to register a call address of a desired called subscriber, and the called subscriber receives an incoming call. There is provided a called subscriber state notification system, comprising: display control means for displaying the registered call address on the mobile radio telephone of the calling subscriber when the state changes to a connectable state.

Further, the state in which the incoming connection is not possible is a state in which the called subscriber is talking with another subscriber, and the state in which the incoming connection is possible is shifted from the state in which the called subscriber is talking. The called subscriber state notification system is characterized by being in an idle state after the end of a call.

[0021] Further, the state in which the incoming connection is not possible is a state in which the called subscriber is out of the communication area of the radio base station on the receiving side, and the state in which the incoming connection is possible is when the called subscriber is out of the communication area. The state of the called subscriber is changed from the state described above to the called state.

[0022] The state in which the incoming connection is not possible is a state in which the receiving subscriber has turned off the power of the own mobile radio telephone, and the state in which the incoming connection is possible has shifted from the power-off state. There is provided a called subscriber state notification system characterized in that the power supply is in an ON state.

Further, the mobile switching center includes a mobile switching center accommodating the radio base station, an announcement device for notifying the calling subscriber of the connection availability of the called subscriber by voice, and the calling subscription. A subscriber control database for storing a call address registered by a calling party, wherein the mobile exchange analyzes selected digits dialed by the calling subscriber to obtain subscriber information of the calling subscriber and the called subscriber. The subscriber control database is inquired to determine whether or not the called subscriber can be called based on the inquired information. If the called subscriber cannot be called, the calling subscriber is referred to by the calling information received from the subscriber control database. Determines whether the owner of the address notification service is present, and determines whether the calling subscriber has the address notification service. If the call address is registered in the subscriber control database, and if the call address is registered, the announcement device is activated to provide service start guidance to the caller, and the caller subscribes. When a caller registers a call address, the subscriber control database stores a call address of the registered contents, and when it is detected that the called subscriber is in a state where the incoming connection is possible, the calling subscriber is called. A called subscriber status notification method is provided, wherein the called address previously read from the subscriber control database is displayed on the mobile radio telephone of the calling subscriber.

[0024]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, the operation of the present invention will be described.

In the present invention, when the calling subscriber dials the subscriber number of the desired called party, it is checked whether or not the mobile radio telephone of the called subscriber is idle, and the mobile radio of the called subscriber is checked. Whether your phone is talking to another subscriber,
Alternatively, when an incoming connection disabled state is detected, such as when the mobile radiotelephone of the called subscriber is out of the communication area of the called radio base station, this state is stored. Then, when the called subscriber's mobile radiotelephone becomes idle or enters an incoming connection state such as entering the calling area of the called radio base station, the state after this transition is changed to the calling subscriber's mobile radio telephone. By notifying the telephone, the calling subscriber can know that the desired called subscriber is ready for connection.

When the calling subscriber dials the desired called party's subscriber number and the call-receiving subscriber's mobile radio telephone cannot detect the incoming call connection, the calling subscriber is notified by the mobile switching center. The call address of the own mobile radio telephone and the call address of the mobile radio telephone of the called subscriber are registered in accordance with the guidance of (1). Then, when the called party is ready to receive a call, this state is detected, the calling subscriber's mobile radio telephone is called with the registered call address, and the mobile radio of the called subscriber registered in advance is registered. The calling address of the telephone is displayed so that the calling subscriber can view the display and re-call the desired called subscriber.

Next, the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of a called subscriber state notification system according to the present invention, FIG. 2 is a sequence diagram showing an operation sequence at the time of registering a call address in the embodiment of FIG. 1, and FIG. FIG. 4 is a flowchart showing an operation procedure at the time of registering a call address in the first embodiment, and FIG. 4 is a flowchart showing an operation procedure at the time of notifying a call address in the embodiment of FIG.

Referring to FIG. 1, the mobile communication system according to the present embodiment includes a mobile switching center 1, radio base stations 2, 3, and 4, and mobile radio telephones 5, 6, and 7. The exchange 1 has a mobile exchange 11 accommodating the radio base stations 2, 3 and 4, an announcement device 13 for notifying the calling subscriber of the connection availability of the called subscriber by voice, and a registration by the calling subscriber. A subscriber control database 12 for storing call addresses.

The mobile radio telephones 5, 6 and 7 are connected to the mobile switching center 1 through radio base stations 2, 3 and 4, respectively.

Next, the operation of the present embodiment will be described in detail with reference to FIGS. 1, 2, 3 and 4.

First, a procedure for registering a call address will be described.

It is assumed that the mobile radio telephone 6 and the mobile radio telephone 7 are in a call through the radio base station 3, the mobile switching center 11, and the radio base station 4.

In this state, when the calling subscriber dials the selected numeral a of the mobile radio telephone 6 of the desired called subscriber from the mobile radio telephone 5, the mobile switching center 1 receives this selected digit (step S101). ), And analyzes the selected numeral (step S102) and inquires the subscriber control database 12 about the subscriber information of the mobile radio telephones 5 and 6 (step S103).

That is, the mobile exchange 11 makes a call information read request b to the subscriber control database 12 and receives the service registration status of the mobile radio telephone 5 as a call information read response c.

Next, the mobile switching center 11 makes an incoming information read request d to the subscriber control database 12, and receives the busy state of the mobile radiotelephone 6, the idle state, and the service registration status as the incoming information read response e.

Then, based on the inquired information, it is determined whether or not the called subscriber's mobile radiotelephone 6 can be called (step S104). If YES, the called subscriber's mobile radiotelephone 6 is called (step S10).
5) Both subscribers enter a call state (step S10)
6).

No in S104, that is, when the mobile radio telephone 6 is in a call with the mobile radio telephone 7 of the third subscriber, is outside the communication area of the radio base station 3, or is in a power-off state. If it is determined that the incoming call connection is not possible, it is determined whether or not the calling subscriber is an address notification service holder based on the contents of the calling information read response c received from the subscriber control database 12 in S103 (step S107).

If NO in S107, that is, if the calling subscriber is not the owner of the address notification service, a busy tone connection is made (step S114) and then disconnected (step S115).

If YES in S107, that is, if the calling subscriber is the owner of the address notification service, it is checked whether or not the calling address is registered in the subscriber control database 12 (step S108).
If YES, the announcement device 13 is activated, and the service start guidance f for sending the announcement in which the call address has been registered and the announcement urging the next registration to the mobile radio telephone 5 through the mobile exchange 11 and the radio base station 2 f.
(Step S109), and the registered contents are stored in the subscriber control database 12 (step S11).
0) After that, cutting is performed (step S111).

Further, if NO in S108, that is, if there is no registration of the call address in the subscriber control database 12, the announcement of the new registration is announced from the announcement device 13 to the subscriber of the mobile radio telephone 5, and the subscriber is notified of the announcement. Performs the call address registration g (step S11).
2) In the subscriber control database 12, a call address storage h of the registered contents is performed (step S113).

Next, a procedure at the time of notification of a call address will be described.

When the mobile radio telephone 6 of the called subscriber who is talking with the mobile radio telephone 7 of the third subscriber ends the call and goes on-hook, or when the mobile radio telephone 6 goes out of the communication area of the radio base station 3 into the communication area. When a location registration request is made, or when the power of the mobile radio telephone 6 is turned on and a location registration request is made, the mobile switching center 11 detects the state after the shift through the radio base station 3 (YE in step S201).
S), the calling subscriber's mobile radiotelephone 5 is called, and the call address previously read from the subscriber control database 12 is displayed on the mobile radiotelephone 5 (step S202).

The procedure for registering addresses and the procedure for notifying addresses are generally performed by a central processing unit (not shown) in the mobile switching center 11 by executing a processing program stored in a main storage device (not shown). When executed, the so-called software processing is performed.

[0045]

As described above, the present invention relates to a mobile communication system including a mobile switching center, a radio base station, and a mobile radio telephone. And a notifying means for detecting the state after the transition and notifying the mobile radiotelephone of the calling subscriber when the incoming subscriber shifts to a state where incoming connection is possible. The mobile switching center prompts the calling subscriber to register the call address of the desired called subscriber when the incoming call arrives at the subscriber in the normal state, and registers the registered call address when the called subscriber shifts to a state where the incoming call can be connected. By providing display control means for displaying on the mobile radio telephone of the calling subscriber, the above-mentioned state in which the incoming connection is not possible is a state in which the receiving subscriber is talking with another subscriber, and the incoming connection is possible. The state is an idle state after the end of the call when the called subscriber has shifted from the busy state.Furthermore, the state where the incoming connection is not possible is when the called subscriber goes out of the calling area of the called wireless base station. In this state, the incoming connection is possible when the receiving subscriber is out of the service area and is in the service area shifted from the out-of-service area. The power of the wireless telephone is turned off, and the incoming connection-enabled state is the power-on state that has shifted from the power-off state. A mobile exchange accommodating a base station, an announcement device for notifying a calling subscriber of the connection availability of a called subscriber by voice, and a subscription storing a call address registered by the calling subscriber The mobile exchange analyzes the selected digits dialed by the calling subscriber, queries the subscriber control database for subscriber information of the calling subscriber and the called subscriber, and determines the called subscriber based on the inquired information. Judgment of whether or not the call can be made, and if the called subscriber cannot be called, the calling subscriber determines whether or not the address notification service is possessed by the calling information received from the subscriber control database. If it is the holder, check whether the calling address is registered in the subscriber control database, and if this calling address is registered, activate the announcement device and provide service start guidance to the calling subscriber, When the call address is registered, the call address of the registered contents is stored in the subscriber control database. When the receiving subscriber detects that the receiving subscriber is ready to receive a call, the calling subscriber is called, and the calling address previously read from the subscriber control database is displayed on the calling subscriber's mobile radio telephone. This has the effect that the calling subscriber can easily know that the mobile radiotelephone of the desired called subscriber is ready for communication.

Also, according to the displayed calling address,
This has the effect that it is possible to easily re-call to the desired subscriber, and since it is up to the caller to decide whether to make the re-call, there is the effect that no burden is placed on the called party.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a called subscriber state notification system according to the present invention.

FIG. 2 is a sequence diagram showing an operation sequence at the time of registering a call address in the embodiment of FIG. 1;

FIG. 3 is a flowchart showing an operation procedure at the time of registering a call address in the embodiment of FIG. 1;

FIG. 4 is a flowchart showing an operation procedure at the time of notification of a call address in the embodiment of FIG. 1;

FIG. 5 is a flowchart for explaining the operation of a conventional telephone exchange.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Mobile switching center 2, 3, 4 Radio base station 5, 6, 7 Mobile radiotelephone 11 Mobile switching system 12 Subscriber control database 13 Announcement device a Selected numeric dial b Outgoing information read request c Outgoing information read response d Incoming information Read request e Incoming call information read response f Service start guidance g Call address registration h Call address storage

Claims (6)

[Claims] In a mobile communication system including a mobile switching center, a radio base station, and a mobile radio telephone, the mobile switching center receives a call from a subscriber in a state where a call cannot be connected, and the called subscriber receives a call. A called subscriber state notification system, comprising: a notifying means for detecting a state after the transition to a state where incoming connection is possible and notifying the mobile radio telephone of the calling subscriber. 2. The mobile switching center prompts the calling subscriber to register a call address of a desired called subscriber when a call is received by the subscriber in a state where the called connection is not possible, and the called subscriber receives a call. 2. The called subscriber state notification system according to claim 1, further comprising display control means for displaying the registered call address on the mobile radio telephone of the calling subscriber when the state has shifted to a connectable state. . 3. The state in which the incoming connection is not possible is a state in which the called subscriber is talking with another subscriber, and the state in which the incoming connection is possible is shifted from the state in which the called subscriber is talking. 3. The called subscriber state notification system according to claim 1 or 2, wherein the system is in an idle state after the end of a call. 4. The state in which the incoming connection is not possible is a state in which the called subscriber is out of the communication area of the radio base station on the receiving side, and the state in which the incoming connection is possible is such that the called subscriber is out of the communication area. The called subscriber state notification system according to claim 1 or 2, wherein the state is within a communication area shifted from a certain state. 5. The state in which the incoming connection is not possible is a state in which the receiving subscriber has turned off the power of the own mobile radio telephone, and the state in which the incoming connection is possible has shifted from the off state of the power supply. 3. The called subscriber state notification system according to claim 1, wherein the power supply is in an ON state. 6. A mobile switching center accommodating the radio base station, an announcement device for notifying the calling subscriber of the connection availability of the called subscriber by voice, and the calling subscriber. And a subscriber control database for storing a call address registered by the mobile switching center. The mobile exchange analyzes selected digits dialed by the calling subscriber and stores subscriber information of the calling subscriber and the called subscriber. Inquires the subscriber control database, determines whether the called subscriber can be called based on the inquired information, and when the called subscriber cannot be called, the calling subscriber receives the calling information from the subscriber control database. Judge whether the holder of the address notification service is, and when the calling subscriber is the holder of the address notification service Checks whether the calling address is registered in the subscriber control database, and if the calling address is registered, activates the announcement device and provides service start guidance to the calling subscriber, and the calling subscriber calls the calling subscriber. When the address registration is performed, a call address of the registered contents is stored in the subscriber control database, and when it is detected that the called subscriber is in the state where the incoming connection is possible, the calling subscriber is called and the subscriber is called. 3. The called subscriber status notification system according to claim 1, wherein the call address read out from a control database is displayed on the mobile radio telephone of the calling subscriber.