JP3253225B2 - Area return notification device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for notifying a portable radio terminal of returning to a service area in mobile communication using radio or the like.

[0002]

2. Description of the Related Art In recent years, the convenience of mobile communication has been recognized,
Demand for services such as automobiles and mobile phones is increasing, and mobile communication terminals capable of realizing personal communication are becoming widespread. At the same time, with the increase in demand, effective use of frequency is emphasized, and personal handy phone systems (hereinafter PH)
S), the zone covered by the wireless base station is composed of small zones with a radius of 100 to 200 m. The smaller the zone, the more radio base stations are required to provide the service area. In addition, even for radio base stations in relatively large zones, such as automobiles and mobile phones, the equipment costs are huge, so it is difficult to realize a wide service area at the start of service, and the service area is gradually expanded. Is adopted. Therefore, there are many service areas outside the service area including the radio wave interference area (tunnel, underground, etc.).

Conventionally, in a car or a mobile phone, when a network receives a call request from the outside to a terminal outside a service area, the network notifies the calling side that connection is impossible, and provides an answering machine service.

[0004]

However, according to this conventional method, the caller only knows that connection is not possible,
In order to make a call, it is necessary to make a call again. In addition, the answering machine service has a problem that the receiving side needs to receive a message and the transmitting side cannot confirm the message.

[0005] In consideration of such a problem of the conventional service, the present invention notifies the caller of the portable terminal when the portable terminal returns from the outside of the service area to the inside of the service area, or automatically notifies the caller of the return. An object of the present invention is to provide an in-area return notification device that does not require a call back or an answering service when connected.

[0006]

SUMMARY OF THE INVENTION In order to achieve this object, the present invention relates to a mobile communication system including a portable radio terminal and a radio base station for radio communication, and a portable radio on a called side together with a telephone number on a calling side. Stores the terminal identification number,
Means for periodically making an incoming call request for a portable radio terminal to a radio base station in the current location registration area from a stored identification number, and a portable radio terminal whose location is registered in another location registration area. Means for comparing the identification number with the stored identification number, and means for notifying the calling side of the return of the portable wireless terminal to the calling side using the telephone number when the identification number matches or there is an incoming call response, It has a configuration including a network control device provided with means for connecting the line between the portable wireless terminal that has returned within the area and the calling side.

[0007]

With this configuration, when the portable radio terminal moves to another location registration area, it confirms the return to the service area by location registration, and when it returns to the original location registration area, it periodically receives a call request. Can be confirmed by the response to, the caller can be notified that the connection can be made, and the portable wireless terminal and the caller can be automatically connected.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows the configuration of a first embodiment of the in-area return notification device according to the first and second aspects of the present invention.

[0010] The originating terminal 1 requests the network control device 2 to call the portable radio terminal 4. In addition, a response from the network control device 2 to a notification confirmation (confirmation of whether or not a notification of the portable wireless terminal 4 is to be returned to the service area), a notification of the return to the service area, and a connection confirmation (confirmation of whether to connect to the portable wireless terminal 4 returned to the service area) To the network control device 2.

The network control device 2 notifies the radio base station 3 in the location registration area of the incoming call request of the portable radio terminal 4 from the call request from the originating terminal 1. In addition, it notifies the calling terminal 1 of the notification confirmation by the timeout of the incoming call response, and receives a response to it. While periodically transmitting an incoming call request to the wireless base station 3 in the location registration area, the location registration information is confirmed. The calling terminal 1 returns to the service area by receiving a call from the wireless base station 3 or registering the location of the portable wireless terminal 4.
And confirm the connection. The portable wireless terminal 4 is connected to the calling terminal 1 in response to the connection confirmation from the calling terminal 1.

The radio base station 3 notifies the portable radio terminal 4 of the call request from the call request from the network control device 2,
The network controller 2 is notified of the incoming call response from the portable wireless terminal 4. In addition, when the location registration is received from the portable wireless terminal 4, the network controller 2 is notified.

The portable radio terminal 4 notifies the radio base station 3 of the call response from the call request from the radio base station 3. Further, when the location registration area is changed, location registration is performed with the network control device 2 via the wireless base station 3. The present embodiment is configured so that the above can be performed. The operation will be described in detail below.

The operation flowchart of the network control device 2 is shown in FIGS. First, the originating terminal 1 is the portable wireless terminal 4
Is made to the network control device 2 (step S
1), the network control device 2 notifies the radio base station 3 in the location registration area where the location of the portable radio terminal 4 is registered, and starts a timer (steps S2 and S).
3).

Upon receiving the call request, the radio base station 3 wirelessly transmits a call request to the portable radio terminal 4 (step S).
4). If the call response is received from the portable wireless terminal 4, the network controller 2 is notified of the call response, but if there is no call response, it is not notified.

The network controller 2 connects the line between the calling terminal 1 and the portable wireless terminal 4 if the incoming response is notified from the wireless base station 3 before the timer indicates the timeout (steps S4 and S5) (steps S4 and S5). If step S18) times out, it is determined that the portable wireless terminal 4 is outside the location registration area or is in a state where reception is not possible, and “out of service” is notified to the calling terminal 1 (step S6). A notification confirmation is made as to whether to use the in-area return notification service (step S7). If the response of the calling side terminal 1 to the notification confirmation is "use" (step S8), the identification number of the portable wireless terminal 4 is stored as the out-of-service setting together with the telephone number of the calling side terminal 1 (step S9). If "not used", the communication with the calling terminal 1 is disconnected (step S19).

The network control device 2 issues a call request of the portable radio terminal 4 set out of the service area to the radio base station 3 in the location registration area at a relatively long interval in an idle time when there is no normal call request. (Steps S10 and S11). In response to the incoming call request, the wireless base station 3 wirelessly transmits the incoming call request to the portable wireless terminal 4. When the portable wireless terminal 4 moves out of the location registration area and returns to the original location registration area, it can receive an incoming call request from the wireless base station 3 and return an incoming call response thereto (step S12). The wireless base station 3 notifies the network controller 2 of the incoming response. Upon receiving the incoming call response, the network control device 2 determines that the portable wireless terminal 4 has returned to the location registration area, and notifies the calling terminal 1 of the return to service area using the telephone number corresponding to the identification number (step S15).

When a position registration request is issued via the wireless base station 3, it is compared whether the identification number for position registration matches the identification number of the portable wireless terminal 4 set out of service (steps S13 and S14). When the portable wireless terminal 4 moves from the registered location registration area to another location registration area, it performs new location registration. Therefore, if the identification numbers match, it can be determined that the portable wireless terminal 4 has moved from outside the location registration area to another location registration area. Then, using the telephone number corresponding to the identification number, the caller terminal 1 is notified of the return to service area (step S15).

At this time, the calling side terminal 1 is notified of the return to the service area, and if the calling side terminal 1 desires by the connection confirmation, the line with the portable radio terminal 4 is connected (step S).
15, S16).

Next, the configuration of a second embodiment of the present invention according to claims 3 and 4 will be described. The configuration diagram is the same as that of the first embodiment.

The originating terminal 1 issues a call request for the portable radio terminal 4 to the network control device 2. Further, the network control device 2 notifies the network control device 2 of a notification confirmation, a return to service area notification, and a response to the connection confirmation.

The network control device 2 notifies the radio base station 3 in the location registration area of the incoming call request of the portable radio terminal 4 from the call request from the originating terminal 1. In addition, it notifies the calling terminal 1 of the notification confirmation by the timeout of the incoming call response, and receives a response to it. When the location registration of the portable wireless terminal 4 is received from the wireless base station 3, it notifies the originating terminal 1 of the return to service area and confirms the connection. The portable wireless terminal 4 is connected to the calling terminal 1 in response to the connection confirmation from the calling terminal 1.

The radio base station 3 notifies the portable radio terminal 4 of the call request from the call request from the network control device 2, and
The network controller 2 is notified of the incoming call response from the portable wireless terminal 4. In addition, when the location registration is received from the portable wireless terminal 4, the network controller 2 is notified.

The portable radio terminal 4 notifies the radio base station 3 of the call response from the call request from the radio base station 3. In addition, when moving out of the service area, the internal information of the location registration area is deleted. When the location registration area is changed, the location registration is requested to the wireless base station 3.

The operation of the above configuration will be described.

First, when the originating terminal 1 makes a call request to the portable radio terminal 4 to the network control device 2, the network control device 2 transmits the call request to the radio base station 3 in the location registration area where the location of the portable radio terminal 4 is registered. And a timer is started.

The radio base station 3 having received the call request wirelessly transmits a call request to the portable radio terminal 4. If the call response is received from the portable wireless terminal 4, the network controller 2 is notified of the call response, but if there is no call response, it is not notified.

The network control device 2 connects the line between the calling terminal 1 and the portable radio terminal 4 if an incoming call response is notified from the radio base station 3 before the timer indicates a timeout. The wireless terminal 4 determines that the wireless terminal 4 exists outside the location registration area or is in a non-receivable state, and notifies the outgoing terminal 1 of “out of service area” and confirms whether to use the in-service area return notification service. If the response of the calling terminal 1 to the notification confirmation is “use”, the identification number of the portable wireless terminal 4 is stored as the out-of-service setting together with the telephone number of the calling terminal 1. If “not used”, the communication with the calling terminal 1 is disconnected.

When a position registration request is issued via the wireless base station 3, the network control device 2 compares whether the identification number for position registration matches the identification number of the portable wireless terminal 4 set out of service. When the mobile radio terminal 4 cannot receive the radio wave of the radio base station 3, it deletes the location registration information from the inside. Therefore, when a new radio wave can be received, relocation registration is performed. Therefore, if the identification numbers match, it can be determined that the portable wireless terminal 4 has moved from outside the service area to inside the service area. Then, using the telephone number corresponding to the identification number, the caller terminal 1 is notified of the return to service area.

At this time, the calling side terminal 1 is notified of the return to service area, and the line with the portable radio terminal 4 is connected if the calling side terminal 1 desires by checking the connection.

[0031]

As is apparent from the above description,
The present invention provides a means for storing and deleting an identification number of a receiving-side portable wireless terminal together with a calling-side telephone number, and receiving an incoming call of the portable wireless terminal to a wireless base station in the current location registration area from the stored identification number. Means for making a request periodically, means for comparing the identification number of the portable wireless terminal whose position is registered in another position registration area with the stored identification number, and the identification number matches or there is an incoming call response In this case, the network control device having means for notifying the calling side of the return of the portable wireless terminal to the calling area using the telephone number and means for connecting the line between the portable wireless terminal and the calling side that have been returned to the calling area by using the telephone number. It is possible to confirm the return of the portable wireless terminal to the service area without greatly increasing the traffic, and to realize a service return notification device that can eliminate the traffic increase and the burden of redialing due to the recall of the calling side. That.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an in-area return notification device according to an embodiment of the present invention.

FIG. 2 is a part of an operation flowchart of the network control device 2 according to the first embodiment of the present invention;

FIG. 3 is another part of the operation flowchart of the network control device 2 according to the first embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 originating terminal 2 network controller 3 wireless base station 4 portable wireless terminal

────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Kazuhiro Anmichi 1006 Kazuma Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A-3-235563 (JP, A) JP-A-8- 23577 (JP, A) JP-A-8-88688 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H04B ^7/ 24-7/26 H04Q ⁷ /00-7/38

Claims (2)

(57) [Claims] An in-area return notification device in a mobile communication system including a mobile wireless terminal and a wireless base station for performing wireless communication, wherein the identification number of the mobile wireless terminal on the receiving side is stored together with the telephone number on the calling side. Means for periodically making a call request of the portable wireless terminal to the wireless base station in the current location registration area from the stored identification number, and means for performing location registration in another location registration area. Means for comparing the identification number of the portable wireless terminal with the stored identification number, and when the identification number matches or there is a call response, the portable wireless terminal An in-area return notification device comprising: a means for notifying an in-area return in a network control device. 2. The apparatus according to claim 1, wherein means for connecting a line between the portable wireless terminal that has returned to the service area and the calling side is added to the network control apparatus.