JPH06311552A - Wireless telephone system - Google Patents

Abstract

(57) [Abstract] [Purpose] Reliable message communication to a mobile phone is possible, communication cost is reduced, frequency is effectively used by reducing communication traffic, and the processing amount of the wireless base station is reduced accordingly. To provide a wireless telephone system. [Structure] When the base station 111 that has transmitted a message cannot receive a response from the mobile telephone, such as when the mobile telephone 120 does not exist in the wireless zone in which the message is transmitted, or when the message cannot be received because of radio interference or the like, The base station 111 stores the message data in the message file 150 via the control station 140. After that, when there is location registration from the mobile phone 120, the base station that has received the location communication communicates with the control station 140. Then, it is confirmed whether the message data for the mobile phone 120 does not exist. If the message data exists, the message data is extracted from the message file 150 and the message is transmitted to the mobile phone 120.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio telephone system composed of a plurality of base stations.

[0002]

2. Description of the Related Art In recent years, cellular radiotelephone devices have become available which can be called by anyone, anytime, anywhere.

A conventional radio telephone device will be described below with reference to the drawings. FIG. 4 is a basic configuration diagram of a conventional wireless telephone system. In FIG.
Reference numeral 06 is a wireless zone, 111 to 116 are base stations that make each of the wireless zones 101 to 106 within communication range, 120 is a mobile phone, 130 is a wired telephone network, 140 is a control station connected to the wired telephone network 130, 161 to 166 are transmission lines connecting the control station 140 and the base stations 111 to 116.

The operation of the conventional radiotelephone system having the above components will be described below. For the sake of explanation, it is assumed that the location registration is performed via the base station 111 while the mobile phone 120 exists in the wireless zone 101.

When a telephone (not shown) connected to the wired telephone network 130 sends a message to the mobile telephone 120, the previous location registration is performed via the wired telephone network 130 and the control station 140. A message is transmitted from the base station 111 and the base stations 112, 113, and 114 around it. Mobile phone 120 is wireless zone 101 to 1
When it is present in 04, this message can be received, and a response to the reception is sent back to the base station.
The base stations 111 to 114 monitor the response from the mobile phone 120, and when the response is received, the message communication ends normally.

[0006]

However, in the above-mentioned wireless telephone system, the mobile telephone 120 exists in the wireless zones 105 and 106, and the wireless zones 101 to 104 exist.
Wireless zone 101 to 10
4 is present, but the reason for radio interference and mobile phones 1
When the power of 20 is not turned on, the mobile phone 120
Has a problem that it cannot receive a message normally and reliable message communication cannot be performed.

[0007] Further, in the above-mentioned wireless telephone system, the wireless zone is being miniaturized in order to further promote the effective use of frequencies. Therefore, in order to transmit a message to the range in which it is presumed that the portable telephone 120 exists. However, there is also a problem that it is necessary to transmit a message from many base stations, the communication cost increases, the communication traffic increases, and the processing amount of the radio base station increases accordingly.

An object of the present invention is to solve the above problems and provide a wireless telephone system capable of reliable message communication with a portable telephone.

[0009]

In order to achieve the above object, the present invention provides a wireless telephone system with a destination telephone number, a calling telephone number, message information, and identification information for distinguishing a message from other messages. A message file for accumulating (ID) or calling time is added.

[0010]

With the above-described structure, the present invention enables the mobile phone to not receive the message when it is not present in the wireless zone where the message was sent or when the message cannot be received due to radio interference.
If the base station that sent the message cannot receive the response from the mobile phone, the base station stores the message data in the message file via the control station, and if there is location registration from the mobile phone, The registered base station communicates with the control station and confirms whether or not the message data for the mobile phone exists. If the message data exists, the base station takes out the message data from the message file and transmits the message.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a basic configuration diagram of a wireless telephone system of the present invention. In FIG.
Reference numeral 06 is a wireless zone, 111 to 116 are base stations within the communication range of each of the wireless zones, 120 is a mobile phone, 13
0 is a wired telephone network, 140 is a control station connected to the wired telephone network 130, 150 is a message file connected to the control station, and 161 to 166 are the control station 140 and the base stations 111 to 116. Transmission line.

The operation of the radiotelephone system having the above components will be described below with reference to the flowchart of FIG. For the sake of explanation, the mobile phone 120 is in the wireless zone 1.
It is assumed that the location registration is performed via the base station 111 when the location is 01.

When a telephone (not shown) connected to the wired telephone network 130 sends a message to the mobile telephone 120, the wired telephone network 130, the control station 140,
The mobile phone 120 transmits a message via the transmission line 161 from the position registration base station 111 that has previously registered the position (step a). Mobile phone 120 is wireless zone 1
When it is present in 01, this message can be received, and a response to the reception is returned to the base station 111. The base station 111 monitors the response from the mobile phone 120 (step b), and when this response is received, the message communication ends normally (step c).

When the base station 111 cannot receive a response from the mobile phone 120, such as when the mobile phone 120 is moving and does not exist in the wireless zone 101 or when the power is off, the base station 111 sends a message. Data (including message, caller telephone number, callee telephone number) is sent to the message file 150 via the control station 140.
(Step d). The base stations 111 to 116 are in a position registration standby state from the mobile phone 120 (step e). When the position registration from the mobile phone 120 is in the base station 116, for example, the base station 116 that has received the position control is controlled. Communicating with the station 140,
It is confirmed whether the message data for 0 does not exist. If the message data exists, the message data is extracted from the message file 150 and the message is transmitted (step f). Mobile phone 120
Exists in the wireless zone 106, the mobile phone 120
Is capable of receiving this message and returns a response to the reception to the base station 116. The base station 116 monitors the response from the mobile phone 120 (step g), and when this response is received, the message communication ends normally (step h).

When the mobile phone 120 cannot receive a message due to radio interference, or the base station 116
Is unable to receive a response from the mobile phone 120,
The base station 116 notifies the control station 140 that the message transmission is not normally completed, waits for the next location registration of the mobile phone 120, and repeats the same operation thereafter.

Further, as shown in FIG. 3, the message file 150 stores a destination telephone number, a calling source telephone number, and message information. Identification information (ID) for distinguishing a message from other messages, call origination time, etc. are also accumulated in the message file 150.

[0017]

As is apparent from the above description, the present invention enables reliable message communication to a mobile phone, which reduces the communication cost and the effective use of the frequency due to the reduction of the communication traffic, and the accompanying wireless communication. This has the effect of reducing the throughput of the base station.

[Brief description of drawings]

FIG. 1 is a block diagram showing a basic configuration of a wireless telephone system according to an embodiment of the present invention.

FIG. 2 is a flowchart showing an operation of message communication to a wireless telephone of the wireless telephone system in the embodiment of the present invention.

FIG. 3 is a message content diagram stored in a message file according to an embodiment of the present invention.

FIG. 4 is a block diagram showing a basic configuration of a conventional wireless telephone system.

[Explanation of symbols]

 101-106 Wireless zone 111-116 Base station 120 Mobile phone 130 Wired telephone network 140 Control station 150 Message file

Claims (1)

[Claims] 1. A mobile station comprising a control station connected to a wired telephone network, a base station connected to the control station and having each wireless zone within communication range, a message file connected to the control station, and a plurality of mobile phones. If the base station that sent the message cannot receive the response from the mobile phone, such as when the phone does not exist in the wireless zone that sent the message or cannot receive the message due to radio interference, etc. When the message data including the caller's telephone number and the callee's telephone number is stored in the message file via the control station and then the location is registered from the mobile phone, the base station that received the location registration It communicates with the control station and checks if there is no message data for the mobile phone. If message data exists, the message data is sent. A wireless telephone system characterized by extracting message data from a sage file and transmitting the message.