JP3063734B2 - Mobile terminal status management system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile terminal status management system for suppressing the occurrence of incomplete calls.

[0002]

2. Description of the Related Art Conventionally, in mobile communications such as cellular phones and PHSs, in response to a call from a calling terminal, a network including an exchange calls a called terminal based on the called subscriber number. In this case, if the network does not answer the call after a certain period of time, the network informs the calling terminal that it cannot connect because it is out of reach of radio waves or the power is not turned on. Is known.

[0003]

In such a conventional service, it is unknown whether the receiving terminal is in a power-off state or is located outside a service area where radio waves cannot reach. For this reason, the calling side expects that if the receiving terminal is located outside the service area, it may move and enter the service area, redial repeatedly, or expect the power to be turned on. There are many cases in which redialing is frequently performed, which causes a problem that incomplete calls are frequently generated and radio waves are wasted.
The present invention has been made in view of such circumstances, and an object of the present invention is to provide a mobile terminal status management system capable of avoiding frequent incomplete calls.

[0004]

In order to achieve the above object, according to the first aspect of the present invention, a mobile terminal transmitting its own state as a predetermined signal and a base station transmitting a signal transmitted from the mobile terminal And a state information storage means for storing state information corresponding to each of the mobile terminals in accordance with an instruction of the exchange means. The exchange means reads the state information corresponding to the mobile terminal from the state information storage means, and when confirming the power-off state, does not make a call via the base station and notifies the calling side that the power-off state is present. On the other hand, if the out-of-service state is confirmed, the calling via the base station is not performed, the calling side is notified of the out-of-service area, and the mobile terminal is out of the service area.
When the mobile terminal is operated, the mobile terminal
Set to ON to determine if you ’re in range or out of range,
If it is within the range, transmit a predetermined signal, and
The switching means changes the state information corresponding to the mobile terminal to power off.
Instructs state information storage means to rewrite information to state
Characterized in that it.

[0005]

[0006]

[0007]

[0008]

According to the present invention, the exchange means reads out the state information corresponding to the mobile terminal from the state information storage means in response to the call and, if the power-off state is confirmed, does not execute the call via the base station. , The calling side is notified of the power-off state. On the other hand, if the out-of-service state is confirmed, the calling terminal is not called and the calling side is notified of the out-of-service state. Becomes clear, so that redialing is not repeated as in the related art, and the occurrence of incomplete calls can be suppressed to prevent waste of radio waves.

[0010]

An embodiment of the present invention will be described below with reference to the drawings. (1) Configuration First, FIG. 1 is a block diagram showing a configuration of a mobile terminal status management system according to an embodiment of the present invention. In this figure, reference numeral 1 denotes a mobile phone serving as a receiving terminal, which transmits a state to the base station 2 as a predetermined signal when a power on / off operation is performed or when the mobile phone goes out of service area. Reference numeral 2 denotes a base station, which transmits a signal received from the mobile phone 1 to the exchange 3. The exchange 3 receives power on / off of the mobile phone 1 from the base station 2 and status information for identifying whether the mobile phone 1 is out of the service area and registers it in a home location register (hereinafter, referred to as HLR) 4. Further, the exchange 3 transmits the state information to the HL.
When the registration in R4 is completed, a registration completion notification is transmitted to the mobile phone 1 side. Upon receiving the registration completion notification, the mobile phone 1
The registered state information is written into a state management memory provided inside. Reference numeral 5 denotes a calling terminal for sending a call to the mobile phone 1 to the exchange 3.

(2) Operation Next, as operations in the mobile terminal state management system having the above configuration, there are "registration sequence of power on / off state of mobile phone 1" and "registration / out-of-service state of mobile phone 1".
The "release sequence", the "calling sequence to the mobile phone 1 when the mobile phone 1 is in range and the power is off", and the "calling sequence to the mobile phone 1 when the mobile phone 1 is out of range" will be described.

Power On / Off State Registration Sequence In this case, as shown in FIG. 2, when the power is turned on / off by the portable telephone 1, the portable telephone 1 responds to the switching via the base station 2 in response to the operation. 3, a power on / off notification is transmitted. Then, the exchange 3 instructs the HLR 4 to write information to the power on / off notification received via the base station 2 as state information. The HLR 4 receives the instruction and writes a power on / off notification in an information area corresponding to the mobile phone 1. When the power on / off notification is registered in this manner, the HLR
4 transmits a write completion notice to the exchange 3, and the exchange 3 sends a registration completion notice to the mobile phone 1 via the base station 2 in response to the notice.
Reply to. Thereby, the mobile phone 1 writes the registered contents in its own state management memory.

Registration / cancellation sequence of out-of-service state Next, referring to FIG.
The release sequence will be described. First, the mobile phone 1
When it is determined that the mobile phone 1 is going out of service, the mobile phone 1 transmits an out-of-service notification. In addition, as a means for determining out of service, when a call is in progress, even if a handover request is continuously transmitted, failures are repeated, and when the electric field strength falls below a certain threshold, it is determined that out of service, In the standby state, it is known that an attempt to shift to the next candidate standby channel repeatedly fails, and when the electric field strength falls below a certain threshold, it is determined that the mobile station is out of the service area.

By such means, the out-of-service area is determined,
The out-of-service notification transmitted from the mobile phone 1 is transmitted to the exchange 3 via the base station 2. Then, upon receiving the out-of-service notification, the exchange 3 instructs the HLR 4 to write state information indicating the out-of-service state. In response, the HLR 4 writes the status information in the information area of the mobile phone 1. When the writing is completed, the HLR 4 transmits a write completion notification to the exchange 3, and the exchange 3 transmits a status registration completion notification to the mobile phone 1 via the base station 2. Then, the mobile phone 1 that has received the status registration completion notification writes the registration contents in the status registration memory inside itself.

When the mobile phone 1 determined to be out of the service area moves into the service area again, the mobile phone 1 transmits a location registration request to the exchange 3 via the base station 2. As a result, the exchange 3 issues a location registration write instruction to the HLR 4, and in addition to the location registration writing in the HLR 4, performs the out-of-service cancellation. The exchange 3 transmits a registration completion notification to the mobile phone 1 via the base station 2. The mobile phone 1 writes the registered contents in the state management memory.

Next, the operation when the power is turned on / off outside the service area will be described. When the power is turned on outside the service area, when the mobile phone 1 moves into the service area, the mobile phone 1 makes a position registration request, and the HLR 4 rewrites the information to the service area / power-on state accordingly. On the other hand, when the power is turned off outside the service area, the mobile phone 1 periodically turns on the power, determines whether the mobile phone 1 is in the service area or out of the service area. Rewrite off. When the registration is completed, the mobile phone 1 periodically turns on the power and does not perform the operation of determining whether the mobile phone is in or out of service.

Calling sequence in service area and power off state Next, a call sequence to the mobile phone 1 when the mobile phone 1 is in service area and power off will be described with reference to FIG. First, when a call is originated from the calling terminal 5 to the mobile phone 1, the exchange 3 sends the subscriber information about the mobile phone 1 to H.
Read from LR4. At this time, if the service area and the power-off state are registered as the state information of the mobile phone 1,
The exchange 3 notifies the calling terminal 5 of the guidance that the power is off without calling the mobile phone 1.

Calling Sequence in Out-of-Service State Next, a calling sequence to the mobile phone 1 when the mobile phone 1 is out of service will be described with reference to FIG. When a call is made from the calling terminal 5 to the mobile phone 1, the exchange 3 reads the subscriber information on the mobile phone 1 from the HLR 4. At this time, if the out-of-service information is registered as the status information of the mobile phone 1, the exchange 3 does not call the mobile phone 1 and notifies the calling terminal 5 of the guidance that the user is out of the service area.

The mobile phone 1 registered in the HLR 4
If the status information is within the service area and within the power-on state, the exchange 3 makes a normal call. At that time, if the call cannot be made, it is determined that the state registration has failed, and the power-off or Notification of out-of-service guidance. In order to prevent the state of the mobile phone 1 from being different from the registration information of the HLR 4, the mobile phone 1 writes the registration completed state to the HLR 4 in an internal state management memory, and registers the current state and the registration of the HLR 4. If the status is different, re-registration to HLR4 is performed.

As described above, according to the present invention, when the power of the mobile phone 1 is turned on / off, a predetermined signal from the mobile phone 1 is processed by the exchange 3 via the base station 2. HL for registering and managing the state information of the mobile phone 1
The power on / off state is notified to R4, and the state is written in HLR4. When the mobile phone 1 is going to be out of the service area, a predetermined signal from the mobile phone 1 is processed by the exchange 3 via the base station 2 and the state is written to the HLR 4. When the power of the mobile phone 1 is off,
When there is an incoming call to the mobile phone 1, the exchange 3 reads the information of the mobile phone 1 to the HLR 4 and confirms the power-off state.
To provide guidance that the power is off. When the mobile phone 1 is out of the service area and the mobile phone 1 receives a call, the exchange 3 reads the information of the mobile phone 1 to the HLR 4 and confirms the out-of-service state. 5 is notified of the guidance that the user is out of the service area. As a result, it is possible to determine whether the mobile phone is out of the service area or the power is off, and it is possible to reduce the number of redials from the caller, to avoid frequent incomplete calls, and to reduce the waste of radio waves.

[0021]

According to the present invention, in response to a call, the exchange means reads out the state information corresponding to the mobile terminal from the state information storage means, and when the power-off state is confirmed, the switching means passes through the base station. It does not make a call and notifies the calling side that the power is off.On the other hand, if it confirms the out-of-service state, it does not make a call via the base station and notifies the calling side that it is out of service. The state of the mobile terminal is clarified, so that it is not necessary to repeat redialing as in the related art, and it is possible to suppress the occurrence of incomplete calls and prevent waste of radio waves.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a mobile terminal status management system according to an embodiment of the present invention.

FIG. 2 is a diagram showing a registration sequence of a power on / off state.

FIG. 3 is a diagram showing an out-of-service state registration / cancellation sequence.

FIG. 4 is a diagram showing a calling sequence within a range and under a power-off state.

FIG. 5 is a diagram showing a calling sequence in an out-of-service state.

[Explanation of symbols]

 Reference Signs List 1 mobile phone 2 base station 3 exchange 4 home location register (HLR) 5 originating terminal

Claims (1)

(57) [Claims] 1. A mobile terminal for transmitting its own state as a predetermined signal, switching means for receiving a signal transmitted from the mobile terminal via a base station, and each mobile terminal according to an instruction of the switching means. And a state information storage means for storing state information corresponding to the mobile terminal, wherein in response to a call to the mobile terminal, the exchange means reads state information corresponding to the mobile terminal from the state information storage means, If the power off state is confirmed, the call via the base station is not performed, and the calling side is notified that the power is off, while if the out of service state is confirmed, the call via the base station is performed. not, and notifies the effect that the out-of-service to the calling side, when the mobile terminal is power-off operation in out of range, the transfer
Mobile terminals can be turned on at regular intervals to
Judge whether it is inside or outside the area, and if within the area,
And the exchange means responds to the mobile terminal accordingly.
Rewrite corresponding status information to power off status
A mobile terminal status management system, wherein the mobile terminal status management system is instructed .