JPH10243459A - Cordless telephone system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow the system to respond to incoming call transfer almost surely and to allow a recipient receiving a transferred message to deliver a state of a substantial recipient to a sender by storing registration information to a radio zone informed from a mobile station via a radio base station by a master set and allowing a busy mobile station to transfer an incoming call to any of all call reception available mobile stations in the case that the incoming call reaches the busy mobile station. SOLUTION: Registration information noticed from each of mobile stations 41-51 and given to radio zones 21-23 is informed to a position registration management section 11 via each of base stations 31-33 and stored in a position information table. In the case that an incoming call reaches the mobile station 41 from an external line or an extension, a master equipment 10 discriminates whether or not the mobile station 41 is busy, and continues to a usual call reception sequence when the station 41 is not busy. When the station 41 is busy, the equipment 10 retrieves sequentially the position information table in the position registration management section 11 from its head, obtains a radio zone number of each mobile station and compares the number with a radio zone number of the mobile station 41 receiving the call. Then the equipment 10 makes incoming call transfer processing to all the mobile stations whose zone is the same zone as that of the mobile station 41 receiving the incoming call.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cordless telephone system, and more particularly to a cordless telephone system capable of transferring an incoming call to a busy mobile station to a mobile station in the same wireless zone.

[0002]

2. Description of the Related Art A conventional cordless telephone system of this type will be described with reference to the drawings.

FIG. 4 is a system configuration diagram showing a conventional example.

In FIG. 4, this conventional example is disclosed in Japanese Patent Laid-Open No. 7-3 / 1995.
36434, the wireless zone (A) 106
When there is an incoming call to the mobile station 112 (extension number 104) located within the main unit 2a, the main device 2a determines whether the mobile station 112 is busy, and if not, the mobile station 112 receives the incoming call. If a call is in progress, the main device 112a refers to the wireless zone registration table 112b and selects a mobile station registered in the same wireless zone (A) 106, for example, the mobile station 109 (extension number 101). Next, the main device 102a determines whether the selected mobile station is engaged in a call, and if the selected mobile station is engaged in a call, another mobile station in the same wireless zone,
For example, the mobile station 110 (extension number 102) is selected.
Next, the main unit 12a determines again whether the selected mobile station is busy, and if not, transfers the incoming call to the mobile station 110 (extension number 102).

When the transfer is performed as described above, the mobile station 110
Since the callee of (extension number 102) is located in the same wireless zone as the caller of the mobile station 112 (extension number 104) which is originally called, the callee is also short in distance and the mobile station 112 (extension number 104) The caller can be immediately notified that there is another incoming call. Further, since the distance is short, the callee of the mobile station 110 (extension number 102) can easily confirm that the user of the mobile station 112 (extension number 104) is talking on the phone, and On the other hand,
It is possible to promptly notify that the original called party is in a call, the scheduled end time of the call, and the like.

[0006]

In this conventional cordless telephone system, an incoming call is transferred to one mobile station which is located in the same wireless zone and is most likely to respond.
Depending on the situation of the transfer destination mobile station, such as when the mobile station holder is not close to the mobile station or when the mobile station holder cannot answer during a conference or the like, it is transmitted that the original called party is busy. There is a problem that it may not be possible to notify the person.

[0007]

According to the cordless telephone system of the present invention, a service area is constituted by a plurality of wireless zones, and a plurality of wireless base stations under the control of a main unit connected to a public network are connected to the plurality of wireless base stations. Located in each of the zones, a plurality of mobile stations move between the plurality of wireless zones,
In a cordless telephone system capable of communication, the main unit stores storage information for registration in a wireless zone notified from the mobile station via the wireless base station; Transfer means for transferring an incoming call to all mobile stations capable of receiving calls registered in the wireless zone in which the mobile station in communication is registered.

In the cordless telephone system of the present invention, a service area is constituted by a plurality of wireless zones, and a plurality of wireless base stations under the control of a main unit connected to a public network are arranged in each of the plurality of wireless zones. In a cordless telephone system in which a plurality of mobile stations can move and communicate between the plurality of wireless zones, the main device stores registration information for a wireless zone notified from the mobile station via the base station. A location registration management including a location registration table, and a call transfer control unit, wherein the call transfer control unit, when the mobile station receives a call from an outside line or an extension, the called mobile station is busy. It judges whether there is, and if it is not during the call, it shifts to a normal incoming call sequence, and if the called mobile station is during the call, the location information table in the location registration management unit The wireless zone number of each mobile station is searched in order from the top, and compared with the wireless zone number of the called mobile station, the incoming call transfer processing is performed for all mobile stations that are determined to be in the same wireless zone as the called mobile station. I do.

[0009]

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

FIG. 1 is a system configuration diagram showing an embodiment of the present invention, FIG. 2 is a diagram showing an example of a position information table possessed by a main device in the present embodiment, and FIG. 3 is a main device in the present embodiment. 6 is a flowchart of incoming call transfer showing control at the time of incoming call.

In FIG. 1, this embodiment is a public network 1
, A base station 31, 32, 33 under the control of the main apparatus 10, mobile stations 41 to 45 in a wireless zone 21 managed by the base station 31, and a base station 32 Mobile stations 46 to 48 in the wireless zone 22
Mobile station 4 within wireless zone 23 managed by base station 33
9 to 50, and the main apparatus 10 includes base stations 31, 32, 3
3 manages the wireless zones 21, 22, 2
Location management unit 11 for managing the registration information of the mobile stations in 3
And a call transfer control unit 12 that performs transfer control when a call is received.

In FIG. 2, registration information to the radio zones 21 to 23 notified from each of the mobile stations 41 to 51 is notified to the location registration management unit 11 via each of the base stations 31 to 33,
The position information is stored in the position information management table 11 in the position information table shown in FIG.

Next, a transfer operation at the time of an incoming call in this embodiment will be described with reference to FIG. 1, FIG. 2 and FIG.

For example, when the mobile station 41 receives an incoming call from an outside line or an extension, the main unit 10 determines whether the mobile station 41 is in a call (step S1). Move on (step S2). If the mobile station 41 is busy, the location registration management unit 11
The wireless zone number of each mobile station is obtained by sequentially searching the position information tables in the order from the top (step S3), and is compared with the wireless zone number of the mobile station 41 that has received the call (step S4).
Call transfer processing is performed for all mobile stations that are determined to be in the same wireless zone (step S7).

If they are not in the same wireless zone, no call transfer processing is performed. It is determined whether or not processing has been completed for all mobile stations in the same wireless zone 21 as the mobile station 41 registered in the position information table (step 6). If not completed, processing for the next mobile station is performed.

As described above, according to the present embodiment, when an incoming call is received by a busy mobile station, the incoming call is forwarded to all mobile stations in the same wireless zone as that mobile station, so that the incoming call is almost certainly received. The caller can respond to the transfer, and the status of the original called party can be quickly and reliably transmitted to the calling party.

[0017]

As described above, according to the present invention, a service area is constituted by a plurality of radio zones, a plurality of radio base stations under control of a main unit are arranged in each of a plurality of radio zones, and a plurality of radio zones are provided. In a cordless telephone system in which a mobile station can move and communicate between a plurality of wireless zones, a main unit includes storage means for storing registration information in a wireless zone notified from a mobile station via a wireless base station. Transfer means for transferring an incoming call to all of the mobile stations capable of receiving calls registered in the wireless zone in which the mobile station that is talking is registered when a call is received by the mobile station that is talking. When an incoming call arrives at a busy mobile station, call transfer is performed to all mobile stations in the same wireless zone as that mobile station, so that the call transfer can be almost certainly answered, and the transfer reception responder originally responds. There is an effect that can tell the status of the called party quickly and reliably caller.

[Brief description of the drawings]

FIG. 1 is a system configuration diagram showing an embodiment of the present invention.

FIG. 2 is a diagram illustrating an example of a position information table included in a main device according to the present embodiment.

FIG. 3 is a flowchart of incoming call transfer showing control of the main device at the time of incoming call in the present embodiment.

FIG. 4 is a system configuration diagram showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Public network 10 Main apparatus 11 Location registration management part 12 Call transfer control part 21-23 Wireless zone 31-33 Wireless base station 41-51 Mobile station

Claims (2)

[Claims] 1. A service area is constituted by a plurality of wireless zones, and a plurality of wireless base stations under the control of a main unit connected to a public network are arranged in each of the plurality of wireless zones. Moving between the plurality of wireless zones,
In a cordless telephone system capable of communication, the main unit stores storage information for registration in a wireless zone notified from the mobile station via the wireless base station; A cordless telephone system comprising: a transfer unit that transfers a call to all mobile stations capable of receiving calls registered in the wireless zone in which the mobile station that is currently talking is registered. 2. A service area is constituted by a plurality of wireless zones, a plurality of wireless base stations under control of a main unit connected to a public network are arranged in each of the plurality of wireless zones, and a plurality of mobile stations Navigate between multiple wireless zones,
In a cordless telephone system capable of performing communication, the main device includes a location registration management including a location registration table storing registration information to a wireless zone notified from the mobile station via the base station; A call transfer control unit, when the mobile station receives an incoming call from an outside line or an extension, determines whether the receiving mobile station is in a call, and if the call is not in a call, a normal call sequence If the called mobile station is busy, the location information table in the location registration management unit is searched in order from the beginning to determine the wireless zone number of each mobile station, and the wireless zone of the called mobile station is determined. A cordless telephone system wherein a call transfer process is performed for all mobile stations that have been determined to be in the same wireless zone as the called mobile station, compared with the number.