JPH03140024A - Radio communication system - Google Patents

Abstract

PURPOSE:To attain the transmission/reception between portable station by constituting each portable station having a portable terminal equipment provided with a message input section and a display section and having a radio unit making radio connection with a base station. CONSTITUTION:A portable station is constituted of a radio unit 210 and a portable terminal equipment 220. A person carrying the portable station enters a message from an input section 225 to send the message to the base station with the radio unit 210 and it is sent to an opposite portable station from the base station and the message is displayed on a display section 224. Thus, a message is sent from a portable station to other portable station, the function of the portable station is improved to obtain the system having handleability.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is applied to, for example, a wireless individual calling device used as a base song system within a premises, and is capable of wireless communication from a base station to a plurality of mobile stations. A wireless communication system that performs

[Prior Art] FIG. 7 shows the configuration of a conventional wireless individual calling device having a message display function.

In the figure, 10 is a base station, which is composed of a message input device 11, a transmitting section 12, a transmitting antenna 13, and the like.

Further, 20 is one of a plurality of mobile stations selectively called by a transmission signal from the base station IO. This mobile station 20, like other mobile stations not shown, includes a receiving antenna 21, a receiving section 22, a control section 23, a notification device 24,
It is composed of a display section 25 and the like.

The base station 10 transmits a selective calling number (rlDID number) assigned to the mobile station 20 and a message signal to be transmitted, and the mobile station 20 receives the transmitted signal, and the controller 23 ID number and received I
The D number is compared with the D number, and when they match, the notification device 24 is made to sound, and then a message based on the received message signal is displayed on the display section 25. The above ID number is expressed as a digital value, and the mobile station 20 stores its own ID number in its memory.

[Problems to be Solved by the Invention] By the way, in the device shown in the example in FIG. When you want,
It is necessary to request the base station IO to send a message using another means of communication such as a telephone.

Therefore, the present invention allows messages to be sent and received between mobile stations.

[Means for Solving the Problems] The present invention provides a wireless communication system comprising a plurality of base stations, a control station connected to the base stations by wire, and a plurality of mobile stations connectable to the base stations wirelessly. The mobile station includes a mobile terminal device that includes a message input section and a display section, and a wireless unit that establishes a wireless connection with a base station.

[Function] In the above configuration, a person who owns a mobile station can access the input section 2.
25, the message is transmitted to the base station by the wireless unit 210,
Furthermore, it is transmitted from the base station to the other party's mobile station, and the display unit 2
A message will be displayed on 24.

〔Example〕

An embodiment of the present invention will be described below with reference to FIG.

In the figure, 100A and 100B are base stations. The base station 100A is composed of a control section 101 that performs communication control, a transmitting section 102, a receiving section 103, a collation circuit 104, and a transmitting/receiving antenna 105 for performing wireless communication with a mobile station. Base station 100B is also base station 10
It is configured similarly to 0A.

Base stations 100A and 100B are connected to control station 300. The control station 300 includes a buffer memory 301 that stores data transmitted from the base station and a control unit 302.
Consisted of.

In addition, in the second rotation, two base stations 100A and 100B
are connected to the control station 300, but the number of base stations is not limited to this.

Furthermore, 200A and 200B are mobile stations.

The mobile station 200A includes a wireless unit 210 and a mobile terminal device 220. Mobile station 200B is also mobile station 2
It is configured similarly to 00A.

The wireless unit 210 includes a transmitting section 211, a receiving section 212, and an ID verification circuit 213 for performing wireless communication with a base station.
and a transmitting/receiving antenna 214, a control unit 215 for controlling communication, a buffer memory 216 for storing data, an interface unit 217 for communicating with the mobile terminal device 220, and a unit for notifying reception of a message from a base station. It is composed of a notification device 218. The notification device 218 includes an auditory device such as a buzzer, a visual device such as an LED, or a tactile device such as a vibrator.

The mobile terminal device 220 includes an interface section 221 for communicating with the wireless unit 210, and a control section 22.
2, a buffer memory 223 for storing data, a display section 224 composed of an LCD (liquid crystal display element) or the like for displaying messages, and a keyboard 225 for inputting messages to be sent.

FIG. 5 shows the appearance of the mobile stations 200A and 200B, and the wireless unit 210 and the mobile terminal device 220 are configured to be separable. As the mobile terminal device 220, a so-called electronic notebook can also be used.

In the example in FIG. 1, two mobile stations 200A and 200B
However, the number of mobile stations is not limited to this number.

This example is configured as described above, and communication between mobile stations is performed as follows. Here, it is assumed that the mobile station 200A is located in the service area of the base station 100A, and the mobile station 200B is located in the service area of the base station 100B.

Keyboard 22 of mobile terminal device 220 of mobile station 200A
The data arbitrarily inputted from 5 is converted into a message signal of kanji, kana, alphanumeric characters, etc. by the control section 222 and stored in the buffer memory 223, and at the same time, a message based on this message signal is displayed on the display section 224.

With rice in this state, by setting the mobile terminal device 220 to the transmission mode, the message signal SO stored in the buffer 7 memory 223 is sent to the control section 215 of the wireless unit 210 through the control section 222, interface sections 221 and 217. It will be done.

The wireless unit 210 transmits the message signal S1 to the base station 100A according to a predetermined communication procedure.

FIG. 3 shows the communication procedure at this time.

In the figure, a C channel (Cch) is a control channel for transmitting control signals, and a D channel (D c
h) is a data channel for transmitting data signals. In a data transmission system for a local wireless station, the transmission time of a control signal is specified to be 0.2 seconds or less, and a message signal cannot be transmitted using a control signal. In other words,
Message signals cannot be transmitted on the C channel. Note that the ACI (signal) is an acknowledge signal, which is a signal that notifies that a data signal has been received.

The ID number is added to each wireless transmission signal, and as shown in FIG. 2, it consists of a system ID, a calling station ID, and a called station ID.

In the base station 100A, the rD verification circuit 104 determines whether the system IDs of the ID numbers of the received signals match, and if it is determined that they are different, the base station 100A returns to the reception standby state. On the other hand, if it is determined that they match, the message signal S1 is received and the ID number and message signal S2 are transmitted to the control station 300.

Upon receiving the message signal S2, the control unit 302 of the control station 300 stores it in the buffer memory 301. Then, the control station 300 transmits the ID number and message signal S3 to each base station. Each base station that receives the message signal S3 determines whether the called station rD is an ID that calls a specific mobile station (hereinafter referred to as "individual IDJ") or an ID that calls multiple mobile stations (hereinafter referred to as "broadcast IDJ"). Discern.

In the case of individual ID, each base station transmits connection request signals to mobile stations within its own service area.Since mobile station 200B is within the service area of base station 100B, Receive the connection request signal. Subsequently, the D verification circuit 213 determines whether or not the called station ID matches the ID of the own station, and if it is determined that they are different, the device returns to the standby state again. On the other hand, if it is determined that they match, the message signal S4 is received using the communication procedure shown in FIG.

The control &lj unit 215 stores the received message signal S5 in the buffer 7 memory 216, and then notifies the carrier using the notification device 218. This message signal S5 is sent to the control section 222 of the mobile terminal device 220 through the control section 215 and the interface sections 217 and 221, stored in the buffer memory 223, and then supplied to the display section 224 to display the message. be done.

In the case of broadcast ID, the communication procedure between the base station and mobile station is as follows.
The result is as shown in FIG.

First, each base station searches for an unused D channel and connects the mobile station with an ID number containing a broadcast ID as the called station ID and a D channel number for transmitting a message signal. A request signal is transmitted on the C channel. When each mobile station receives the connection request signal, it confirms that it is a broadcast ID, and then transmits it on the designated D channel.
Waits for the next message signal to be sent.

After confirming that the designated D channel is not in use, the base station transmits a message signal on the D channel. After the transmission of the message signal is completed, the base station returns to the reception standby state again on the C channel. After receiving the message signal, the mobile station operates in the same way as in the case of an individual ID.

As described above, according to this example, messages can be sent and received between mobile stations. And in this case, called station I
By using D as an individual ID, a message can be sent to a specific mobile station, and by using D as a broadcast ID, messages can be sent to multiple mobile stations simultaneously.

Although not mentioned above, the wireless units 210 of the mobile stations 20OA and 200B can receive message signals even when separated from the mobile terminal device 220, and the received message signals are stored in the buffer memory 216 at any time. Ru. Therefore, by connecting the mobile terminal device 220 to the wireless unit 210 after receiving the message signal, the message can be confirmed.

Further, as shown in FIG. 6, if the transmitting section 211 of the wireless unit 210 is configured to be separated, and the transmitting section 211 is separated, the so-called pager ll111! You can also have only one. In this case, it is necessary to provide the receiving section 212 with an antenna separately from the transmitting section 211.

[Effects of the Invention] As explained above, according to the present invention, a mobile station includes a mobile terminal device that can share a message input section and a display section, and a wireless unit that establishes a wireless connection with a base station. Therefore, messages can be sent from one mobile station to another mobile station. Therefore, it is possible to improve the functionality of the mobile station, and it is possible to obtain one that is easy to use.

[Brief explanation of the drawing]

Fig. 1 is a configuration diagram showing an embodiment of this invention, and Fig. 2 is!
Figures 3 and 4 are diagrams showing a configuration example of a D number, Figures 3 and 4 are diagrams showing a call procedure, Figures 5 and 6 are diagrams showing the external appearance of a mobile station, and Figure 7 is an example of a wireless individual calling device. FIG. 100A. 10 ・ l O2l oa -- 104th item 100 B ・Base station・control section・transmission section・reception section IDM combination circuit 105 ・・ 2 0 OA. 2101 2111 212 ・ ・ 213 ・ ・ 214 ◆ ・ 215 ・ ・ 2161 217・Contest 218 ・φ 220 Mouth 2211 2221 223- 224 ・ ・ 225 ・ ・ 3001 30 l 1 ・Transmitting and receiving antenna 200 B ・Mobile station curve line unit Transmitting unit, receiving unit, [D verification circuit, transmitting and receiving antenna, control unit, buffer 7 memory, interface unit, notification device, mobile terminal device, interface unit, control unit - buffer memory, display unit, keyboard, control station, buffer memory 302...control unit

Claims (1)

[Claims] (1) In a wireless communication system consisting of a plurality of base stations, a control station connected to the base station by wire, and a plurality of mobile stations capable of wirelessly connecting to the base station, the mobile station transmits messages. 1. A wireless communication system comprising: a mobile terminal device including an input section and a display section; and a wireless unit that establishes a wireless connection with the base station.