JPH06113359A - Call reception method for cordless telephone system - Google Patents

Abstract

PURPOSE:To reduce an incoming call loss to a radio mobile equipment by sending simultaneously incoming call information from all radio base stations and allowing the radio mobile equipment to return an acknowledge in the case of the arrival of an incoming call to a radio mobile station. CONSTITUTION:A call request from an extension telephone set 107 is noticed simultaneously to radio mobile equipments 101, 102 via subscriber circuits 104, 106 and radio base stations 103, 105 through a multiple address communication bus 111. The radio mobile equipments 101, 102 always monitor a calling, and when the radio mobile equipment 101 detects a call to itself, displays the arrival of call and replies it, the equipment 101 requests the incoming call processing to a central processing unit 110 via a path of radio base station 103-subscriber circuit 104-multiple address communication bus 111.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an incoming call system of a cordless telephone system.

[0002]

2. Description of the Related Art In the conventional call reception method of a cordless telephone system, when an incoming call is made to a wireless mobile device, the positions of all the wireless mobile devices are periodically detected and stored in a database, and the incoming call should be made from the database. A general method is to search the position information of the wireless mobile device, select a specific wireless base station, and call the wireless mobile device.

[0003]

In the conventional call reception method of the cordless telephone system, since the position information of the wireless mobile device stored in the database is searched and a specific wireless base station is selected and called, the wireless mobile device is called. There was a problem that the wireless mobile device that should receive an incoming call could not be called immediately because the position of was not known in real time.

[0004]

The cordless telephone system according to the present invention is provided with a plurality of wireless base stations that are wirelessly communicated with wireless mobile stations located in different wireless zones and located in different wireless zones. In a private branch exchange connected via a caller circuit, a central processing unit that simultaneously notifies all the subscriber circuits of incoming information to a specific wireless mobile device, and all the wireless base stations of the notified incoming information. All the subscriber circuits for simultaneously notifying all the wireless mobile devices via the above, and all the subscriber circuits for monitoring the status of the wireless mobile devices, and for responding when a call to itself is detected by constantly monitoring the simultaneous incoming notification. And the wireless mobile device that requests incoming call processing.

[0005]

The present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a block diagram of time division multiplexed channels. Wireless mobile device 10
1 and the wireless mobile device 102 perform bidirectional communication with the wireless base station 103 or the wireless base station 105 using the time-division multiplexed wireless signal shown in FIG. The radio base stations 103 and 105 are connected to the subscriber circuits 104 and 106, respectively. The extension telephone 107 is connected to the subscriber circuit 108. In addition, the central processing unit 110 is used for all the subscriber circuits 104, 10
The incoming call information is notified to 6, 108 via the broadcast bus 111. Further, the time-division-multiplexed radio signal is composed of a call information channel 201, a control channel 202, a call channel 203, and a call channel 204, as shown in FIG.
Is always read.

The wireless mobile device 101 is in the zone of the wireless base station 103. The person who handles the extension of the extension telephone set 107 goes off-hook and dials the extension number of the wireless mobile device 101.
When the central processing unit 110 recognizes that the call is transmitted from the extension telephone 107 to the wireless mobile device 101, the broadcast bus 1
11 is used to instruct the subscriber circuits 104 and 106 to call the wireless mobile device 101. Subscriber circuit 104
2 and 106 respectively put information for calling the wireless mobile device 101 on the call information channel 201 shown in FIG.
Wireless transmission is performed using the wireless base stations 103 and 105.
The wireless mobile device 102 reads the information on the call information channel 201, checks whether it is a call for itself, and does not process anything because it is not a call for itself (wireless mobile device 201). Similarly, the wireless mobile device 101 also uses the call information channel 2
Read 01 information, check if it's your call,
Since it is a call to itself (the wireless mobile device 101), the wireless mobile device 101 uses the control channel 202 to the wireless base station 103 so that the wireless mobile device 101 transmits the wireless base station 103.
Notify that you are in the zone. Radio base station 10
3 notifies the subscriber circuit 104 that the wireless mobile device 101 is located within the zone of the wireless base station 103.
Further, the subscriber circuit 104 is connected to the central processing unit 110 via the broadcast bus 111 and the wireless mobile device 101 is connected to the wireless base station 103.
Notify that you are in the zone. Central processing unit 1
Upon receiving this notification, the notification 10 notifies the subscriber circuit 104 that there is an incoming call from the extension telephone 107 to the wireless mobile device 101, and instructs the wireless mobile device 101 to perform an incoming call process.

When the person who handles the extension of the wireless mobile device 101 goes off-hook, the central processing unit 110 connects the extension telephone 107 and the wireless mobile device 101, and the process ends.

[0008]

As described above, according to the present invention, since the wireless mobile station is called to all the wireless base stations at the same time when the incoming call arrives, the position of the wireless mobile station desired to receive the incoming call can be grasped in real time, and the incoming call loss can be prevented. It has the effect that it can be reduced.

[Brief description of drawings]

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

FIG. 2 is a diagram showing a channel configuration of time-division-multiplexed wireless signals according to the present embodiment.

[Explanation of symbols]

 101, 102 wireless mobile device 103, 105 wireless base station 104, 106, 108 subscriber circuit 107 extension telephone 109 switch matrix 110 central processing unit 111 broadcast bus 201 call information channel 202 control channel 203, 204 call channel

Claims (1)

[Claims] 1. A private branch exchange in which a plurality of radio base stations, which are arranged in a plurality of different radio zones and communicate with radio mobile stations located in the respective radio zones, are connected via a subscriber circuit, A central processing unit that simultaneously notifies all the subscriber circuits of incoming information to the wireless mobile devices, and the wireless that simultaneously notifies all of the wireless mobile devices of the notified incoming information via all the wireless base stations. It has all the subscriber circuits for monitoring the state of the mobile unit and the wireless mobile unit for constantly monitoring the simultaneous incoming call notification and responding when a call to itself is detected and requesting the central processing unit to process the incoming call. Characteristic cordless telephone system incoming method.