JPH03198496A - Movable communication system - Google Patents

Abstract

PURPOSE:To eliminate necessity for adding or changing function for position control even when using a general exchange for fixed communication network by executing the position control of a moving radio equipment by a fixed radio equipment itself. CONSTITUTION:In order to share one fixed radio equipment 2 by plural movable radio equipments 3 and to determine which movable radio equipment belongs to which home fixed radio equipment, an identification code is provided for each movable radio equipment 3. In the fixed radio equipment 2, there is a memory 7 for position control and the position information of the moving radio equipment 3 are registered to the memory 7 of the home fixed radio equipment 2, to which the movable radio equipment 3 belongs, corresponding to the identification code. Each time the position of the movable radio equipment 3 is changed, the position information of the memory 7 are updated. Therefore, all the positions of the movable radio equipments 3 can be controlled by the home fixed radio equipment. Thus, it is not necessary for an exchange 1 to control the positions of the movable radio equipments 3 and the general exchange for fixed communication network can be used as it is.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a mobile communication system, and particularly relates to an improvement that allows a general-purpose exchange for fixed communication to be used without adding or changing functions.

<Prior Art> Two examples of conventional mobile communication systems will be explained with reference to FIGS. 6 and 7.

The mobile communication system shown in FIG. 6 is constructed from an exchange 11, a plurality of fixed radio devices 12, and a plurality of mobile radio devices 3. Each fixed radio device 12 is connected to the exchange 11 via a wired line 5. Each mobile radio device 3 is selectively connected to one of the fixed radio devices 12 via a wireless line. In other words, fixed radio equipment 1
2 communicates with so-called local mobile radio devices existing within its own service area (communication zone) 6.

Therefore, since it is necessary for the exchange 11 to make an incoming call to a mobile radio device 3 moving within an arbitrary service area of a plurality of fixed radio devices 12, which mobile radio device 3 is connected to the service area 6 of which fixed radio device 12, It was responsible for managing the location of mobile radio equipment, whether it was present or not.

For this reason, when adding a mobile communication network to an existing fixed communication network, the general-purpose exchange for the fixed communication network does not originally have the function to manage the location of mobile radio equipment, so it is necessary to
The functions and mechanisms have been expanded like al or (bl).

(al) By modifying the general-purpose exchanger, the transfer heat l
Functions such as a location management function are added to the 5tff 13 to form the mobile communication network exchange 11 shown in FIG.

lb) As shown in Figure 7, the general-purpose exchange a1 is used as is, but in addition to it, the upper l control station IA is used exclusively for fixed radio equipment.
This control station IA performs IEW management of the mobile radio equipment 3 and centralized management of the fixed radio equipment 12.

The same thing can be said when building a new mobile communication network, regardless of the fixed communication network.

In other words, since it is not possible to use a general-purpose exchange for a fixed communication network as is, it is possible to add a location management function to this general-purpose exchange and use it as a mobile communication network-specific exchange 11 (Fig. 6), or to combine the general-purpose exchange 1 with a fixed wireless device. It is necessary to use a dedicated upper control station IA (FIG. 7).

<Problems to be Solved by the Invention> In view of the above-mentioned prior art, the present invention enables the use of a general-purpose exchange for a fixed communication network without adding functions for position management of mobile radio equipment, The purpose is to provide a mobile communication system that does not require a higher-level control station dedicated to the machine.

<Means for Solving Problem S> The mobile communication system according to the present invention includes an exchange, a plurality of fixed wireless devices each connected to the exchange via a wired line,
In a mobile communication network consisting of multiple mobile wireless devices that are selectively connected to these fixed wireless devices via wireless lines, one fixed wireless device is shared by multiple mobile wireless devices, and mobile An identification code is assigned to each radio device, the identification code determines the fixed radio device to which each mobile radio device belongs, that is, the home fixed radio device, and the home fixed radio device has the function of managing the location of the mobile radio device to which it belongs. Furthermore, this location management function allows the home fixed wireless device to register and search for the location of the mobile wireless device, and to transfer incoming calls to the fixed wireless device at the destination.

Function> With the above configuration, all mobile non-clamping machines are mutually identified by identification codes, and belong to one of the home fixed radio machines. Therefore, the location of all mobile radios is managed by the home fixed radio. As a result, there is no need for the exchange to manage the location of mobile wireless devices, a general-purpose fixed communication network exchange can be used as is, and a higher-level control station for fixed wireless devices is no longer required.

Embodiment> An embodiment of the present invention will be described with reference to FIGS. 1 to 5. Figure 1 shows an example of a communication protocol, Figure 2 shows an example of a system configuration, and Figures 3 to 5 show each stage of incoming calls, forwarding calls, and setting up communication paths. are shown in order.

A schematic configuration of the entire mobile communication network will be explained with reference to FIG. In the figure, an exchange 8!11 is a general-purpose exchange for a fixed communication network, and a plurality of fixed wireless devices 2 are connected via a wired line 5.

At least one of the fixed radio devices 2 is a home fixed radio device and has a position management function for a mobile radio device, but it can be used as is if installed in place of a normal telephone. A plurality of mobile radio devices 3 can be selectively connected to these fixed radio devices 2 via wireless lines. 6 is a service area.

In FIG. 2, each mobile radio device 3 belongs to one of the fixed radio devices 2, respectively.

The fixed radio device to which the mobile radio device belongs is the home fixed radio device. In addition, in order to allow one fixed radio device 2 to be shared by multiple mobile radio devices 3, and to determine which mobile radio device belongs to which home fixed radio device, each mobile radio device 3 is identified. A code is provided. Sharing the fixed wireless device 3 is the same as multiple people sharing a regular telephone, and the identification code is equivalent to selecting a specific person by name from among multiple people. In addition to the telephone number provided, an identification code is provided for each mobile radio.

The fixed radio device 2 has a memory 7 for location management, and the location information of the mobile radio device 3 is registered in the memory 7 of the home fixed radio device to which it belongs, corresponding to the identification code. The position information in the memory 7 is updated every time the position changes.

The location of the mobile radio device 3 is registered, for example, by the following method. The mobile radio device 3 transmits a location registration request signal by radio with an identification code attached thereto at the destination. This location registration request is received by the fixed radio device in which the mobile radio device 3 is located, and the fixed radio device that received the location registration request issues a location registration request and searches the memory 7 for the home fixed radio device of the mobile radio device 3. A call can be made to the home fixed wireless device using the wired line 5 (connect one line, for example, to a mobile wireless device moving within the own service area using a PB (button button) signal). Sends the identification code of device 3 and registers it.The home fixed radio device registers or updates the location information in Mesori 7 from the sent identification code and the fixed radio device that sent it.Receives the location registration request. Fixed radio equipment is mobile radio equipment 3
In addition to the above-mentioned search using the memory 7, there are two ways to find the home fixed wireless device:
There is a method for transmitting the identification code of your home fixed radio, such as a telephone number. In addition, when it is desired to know the location of the mobile radio device 3, it is sufficient to make an inquiry to the home fixed radio device of the corresponding mobile radio device.

The fixed radio device 2 has an inquiry function for making the mobile radio device 3 specific to the other party.

When the caller makes a call to the home fixed radio device 2 via the exchange 1, the fixed radio device 2 specifies the mobile radio device to which of the multiple mobile radio devices belonging to it the call should be received. The request is first issued by, for example, a second dial tone or a voice call. First, the mobile radio device 3 is identified by issuing an identification code using, for example, a PB damage signal. After receiving this identification code, the home fixed number #i! ! The call is realized by the device 2 searching the memory 7 for the location of the corresponding mobile radio device 3, that is, searching for the fixed radio device in which it is located and transferring the incoming call. It should be noted that the second dial tone is a sound used by the receiving system to prompt the user to input a further number after the telephone number has been input, and the voice call is a voice that outputs information instead of a real voice.

Next, an example of a communication protocol will be explained with reference to FIG.

In FIG. 1, when the exchange 1 receives an incoming call A from a previous party, it sends a notification B of this incoming call to the home fixed radio 2-#1. After this fixed wireless device 2-#1 goes off-hook, it makes a request C to specify the mobility am. The next step is to specify the mobile radio 3 using the PB signal. The fixed radio device 2-#1 performs a location search E of the designated mobile radio device 3, and locates the fixed radio device 2-#1 in the area of this mobile radio device 3.
Transfer the incoming call F to #2, and transfer the fixed wireless device 2 to #2.
accepts the incoming call. In this case, the first step is to carry out the manual process of specifying the mobile radio 3,
The designation H of the mobile radio device 3 is made by automatically performing between #1 and #2-#2. Fixed radio equipment 2 that received this designation
- #2 makes a call I to the mobile radio device 3 using the radio line. At this time, the line to the other party is connected to the new fixed wireless device 2.
-Moving to #2.

The above communication protocol allows the mobile radio 3 to receive incoming calls wherever it is moving. As for making calls, simply by allowing the mobile radio device 3 to wirelessly access any fixed radio device 2, the user can freely make calls wherever he or she moves.

Next, the incoming call process will be specifically explained with reference to FIGS. 3 to 5. However, in the illustrated example, among the plurality of fixed radio devices 2, #
1 is the home fixed radio device of the mobile radio device 3. Of course, a plurality of mobile radio devices may belong to this home fixed radio device 2-#1.

Figure 3 shows a case where there is an incoming call B to the home fixed wireless device 2-#1 from the general telephone network etc. via the wired line 4, and the home fixed wireless device @2-#1 moves to the caller. A wireless device specification request is issued, and the location of the mobile wireless device 3 is searched for designation C from the caller.

Then, as shown in Fig. 4, the home fixed radio device 2-#1
The hook puts the line on hold J and uses the forwarding function of exchange 811 to forward the incoming call to the fixed wireless device 2-#2 in which the mobile wireless device 3 is located and transfer the incoming call F to the mobile wireless device 3. Specify H.

Thereafter, as shown in FIG. 5, the fixed radio device 2-#2 calls the designated mobile radio device 3 by radio. As a result, the call path K between the other party and the mobile radio device 3 is set via the exchange 1 and the fixed radio device 2-#2 in which the mobile radio device 3 is located, and the call is started. be exposed.

<Effects of the Invention> According to the present invention, the fixed wireless device itself has the same level as the mobile wireless device W1.
1v! : Even if a general-purpose exchange for a fixed communication network is used, there is no need to add or change functions for location management, and there is no need to install a higher-level control station to control fixed radio equipment.

Therefore, especially when adding a new mobile communication network to an existing fixed communication network and replacing part of it with the mobile communication network, according to the present invention, the general-purpose exchange used in the fixed communication network Since no changes are required, a mobile communication network can be constructed at an extremely low cost.

[Brief Description of the Drawings] Figures 1 to 5 relate to an embodiment of the present invention, in which Figure 1 shows an example of a communication protocol, Figure 2 shows an example of a system configuration, and Figure 3 shows an example of a system configuration. is a diagram showing the state from receiving a call to searching the location of a mobile radio, FIG. 4 is a diagram showing a transfer state, FIG. 5 is a diagram showing a communication channel setting state, and FIGS. 6 and 7 are respectively conventional FIG. In the drawing, 1 is a general-purpose exchange for a fixed communication network, 2 is a fixed wireless device, 2-#1 is a home fixed wireless device, 3 is a mobile wireless device, and 4 is a fixed wireless device.
and 5 are wired lines, 6 is a service area, and 7 is a location management memory. Patent application agent Sumitomo Electric Industries Co., Ltd.

Claims (1)

[Claims] An exchange, a plurality of fixed wireless devices each connected to the exchange via a wired line, and a plurality of mobile wireless devices selectively connected to the fixed wireless devices via a wireless line. In a mobile communication network consisting of radio equipment, one fixed radio equipment is shared by multiple mobile radio equipment, an identification code is assigned to each mobile radio equipment, and the identification code is used to identify the fixed radio equipment to which each mobile radio equipment belongs. In other words, a home fixed radio device is determined, and the home fixed radio device is provided with a function to manage the location of the mobile radio device belonging to it, and this location management function allows the home fixed radio device to register and search the location of the mobile radio device. In addition, a mobile communication system is characterized in that incoming calls are transferred to a fixed wireless device at a moving destination.