JP2726522B2 - Mobile stations and wireless communication systems - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a mobile station applied to a radio personal pager or the like used as a paging system in a premises, and a base station for a plurality of mobile stations. And a wireless communication system for performing wireless communication.

[Prior Art] FIG. 7 shows a configuration of a conventional wireless personal pager having a message display function.

In FIG. 1, reference numeral 10 denotes a base station, which includes a message input device 11, a transmission unit 12, a transmission antenna 13, and the like.

Reference numeral 20 denotes one of a plurality of mobile stations selectively called by a transmission signal from the base station 10. The mobile station 20 includes a receiving antenna 21, a receiving unit 22, a control unit 23, a notification unit 24, a display unit 25, and the like, like other mobile stations not shown.

The base station 10 transmits a selective call number (hereinafter referred to as “ID number”) assigned to the mobile station 20 and a message signal to be transmitted, and the mobile station 20 receives the transmitted signal. The ID number of the own station is compared with the received ID number. When the ID numbers match, the notification device 24 sounds, and a message based on the received message signal is displayed on the display unit 25. The above ID number is represented by a digital value,
Stores the ID number of its own station in the memory.

[Problem to be Solved by the Invention] In the apparatus shown in FIG. 7, a person having the mobile station 20 can receive a message from the base station 10, but sends a message to another mobile station 20. When it is desired, the user must request the base station 10 to transmit a message using another communication means such as a telephone.

Therefore, in the present invention, messages can be transmitted and received between mobile stations.

[Means for Solving the Problems] A portable station according to the present invention includes: a transmitting / receiving unit for performing wireless communication with a base station; a control unit for performing communication control; a memory unit for storing data; An interface unit for performing communication of
A wireless unit including a notification unit that notifies the reception of a message from the base station, an interface unit for performing communication with the wireless unit, a memory unit that stores data, and a display unit that displays a message, And a portable terminal device having an input section having a transmission message input function, wherein the wireless unit and the portable terminal device are configured to be separable.

Further, the wireless communication system including the mobile station is connected to a central control station by wire, and at least a transmitting and receiving antenna,
A plurality of base stations each having a wireless transmission / reception unit and a control unit; and a plurality of mobile stations in a service area of the base station and wirelessly connected to the base station. A transmission / reception unit for performing wireless communication, a control unit for performing communication control, a memory unit for storing data, an interface unit for performing communication with the mobile terminal device, and a message reception from the base station. A wireless unit including a notification unit, an interface unit for communicating with the wireless unit, a memory unit for storing data, a display unit for displaying a message, and an input unit having a transmission message input function. And the wireless terminal and the portable terminal device are configured to be separable.

[Operation] In the above-described configuration, the person having the mobile station operates the input unit.
By inputting a message from 225, this message is transmitted to the base station by the wireless unit 210, and further transmitted from the base station to the mobile station on the other side, and the
Will display a message.

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

In the figure, 100A and 100B are base stations. Base station 100A includes a control unit 101 for performing communication control, a transmitting unit 102, a receiving unit 103, an ID matching circuit 104, and a transmitting / receiving antenna 105 for performing wireless communication with a mobile station. Base station 100B is configured similarly to base station 100A.

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

In the example of FIG. 1, two base stations 100A and 100B are connected to the control station 300, but the number of base stations is not limited to this.

200A and 200B are mobile stations. The mobile station 200A includes a wireless unit 210 and a mobile terminal device 220. The mobile station 200B is configured similarly to the mobile station 200A.

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

The portable terminal device 220 includes an interface unit 221 for communicating with the wireless unit 210, a control unit 222, a buffer memory 223 for storing data, an LCD (liquid crystal display element) for displaying a message, and the like. A display unit 224;
It is composed of a keyboard 225 for inputting a transmission message.

FIG. 5 shows the appearance of the mobile stations 200A and 200B, and is configured so that the wireless unit 210 and the mobile terminal device 220 can be separated. As the portable terminal device 220, a so-called electronic organizer can be used.

Although FIG. 1 shows only two mobile stations 200A and 200B, the number of mobile stations is not limited to this.

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

Data arbitrarily input from the keyboard 225 of the mobile terminal device 220 of the mobile station 200A is converted into a message signal such as a kanji, a kana, or an alphanumeric character by the control unit 222 and stored in the buffer memory 223, and at the same time, The message is displayed on the display unit 224.

In this state, by setting portable terminal device 220 in the transmission mode, message signal S0 stored in buffer memory 223 is transmitted to control unit 215 of wireless unit 210 through control unit 222, interface units 221 and 217. In wireless unit 210, message signal S1 is transmitted to base station 100A according to a predetermined communication procedure.

FIG. 3 shows a communication procedure at this time. In the figure, a C channel (Cch) is a control channel for transmitting a control signal, and a D channel (Dch) is a data channel for transmitting a data signal. In the data transmission system of the local radio station, the control signal transmission time is 0.
It is specified as 2 seconds or less, and a message signal cannot be transmitted by a control signal. That is, a message signal cannot be transmitted on the C channel. ACK
The signal is an acknowledgment signal, which is a signal notifying that the data signal has been received.

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

In the base station 100A, the ID collation circuit 104 determines whether or not the system ID of the ID number of the received signal matches. If it is determined that the system ID is different, the base station 100A enters the reception standby state again. On the other hand, if it is determined that they match, message signal S1 is received, and ID number and message signal S2 are transmitted to control station 300.

Upon receiving the message signal S2, the control unit 302 of the control station 300 stores the message signal S2 in the buffer memory 301. And control station 3
00 is the ID number and message signal S3 for each base station.
Send In each base station that has received the message signal S3, the called station ID is an ID for calling a specific mobile station (hereinafter referred to as “individual
ID) or an ID for calling a plurality of mobile stations (hereinafter referred to as “broadcast ID”).

In the case of an individual ID, each base station transmits a connection request signal to a mobile station in its service area. Since mobile station 200B is within the service area of base station 100B, it receives a connection request signal from base station 100B. Subsequently, the ID collation circuit 213 determines whether or not the called station ID matches the ID of the own station. When it is determined that the called station ID is different, the apparatus returns to the standby state again. On the other hand, if it is determined that they match, the message signal S4 is received according to the communication procedure shown in FIG.

After storing the received message signal S5 in the buffer memory 216, the control unit 215 notifies the notification by the notification device 218 to the wearer. Then, the message signal S5 is transmitted to the control unit 215,
Mobile terminal device through interface units 217 and 221
After being sent to the control unit 222 of 220 and stored in the buffer memory 223, it is supplied to the display unit 224 to display a message.

In the case of broadcast ID, the communication procedure between the base station and mobile station is
As shown in FIG.

First, each base station searches for an unused D channel and sends an ID containing a broadcast ID as the called station ID to the mobile station.
A connection request signal including the number and the number of the D channel for transmitting the message signal is transmitted on the C channel. Upon receiving the connection request signal, each mobile station confirms that it is a broadcast ID, and then waits for reception of a subsequently transmitted message signal on the designated D channel. After confirming that the designated D channel is not used, 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 on the C channel. After receiving the message signal, the mobile station performs the same operation as in the case of the individual ID.

As described above, according to this example, transmission and reception of messages between mobile stations can be performed. And in this case, the called station
A message can be transmitted to a specific mobile station by using the individual ID of the ID, and a message can be simultaneously transmitted to a plurality of mobile stations by using the broadcast ID.

In addition, even if not described above, the wireless units of the mobile stations 200A and 200B
210 can receive a message signal even in a state separated from portable terminal device 220, and the received message signal is stored in buffer memory 216 as needed. Therefore,
By connecting the portable terminal device 220 to the wireless unit 210 after receiving the message signal, the message can be confirmed.

Also, as shown in FIG. 6, the transmitting unit 211 of the wireless unit 210 is configured to be separable, and if the transmitting unit 211 is separated, the mobile stations 200A and 200B have only a so-called pager function. You can also. In this case, the receiving unit 212
Requires that an antenna be provided separately from the transmitting section 211.

[Effects of the Invention] As described above, according to the present invention, a message can be transmitted from a certain mobile station to another mobile station, and the mobile station can use an electronic organizer having a message input unit and a display unit. Since the mobile terminal device and the wireless unit for wirelessly connecting to the base station are configured, the mobile station can be reduced in size and function, and a user-friendly device can be obtained. .

Further, the wireless unit in the portable station of the present invention can be used as a pager in a state where it is separated from the portable terminal device, and further, when a message signal is received in this separated state, the message signal is stored in the memory unit. Thereafter, the message can be confirmed by connecting the wireless unit to the portable terminal device.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention, and FIG.
FIGS. 3 and 4 show call procedures, FIGS. 5 and 6 show the appearance of a mobile station, and FIG. 7 shows an example of a wireless personal calling device. FIG. 100A, 100B Base station 101 Control section 102 Transmitting section 103 Receiving section 104 ID matching circuit 105 Transmitting / receiving antenna 200A, 200B Mobile station 210 Wireless unit 211 Transmitting section 212 receiving unit 213 ID collating circuit 214 transmitting / receiving antenna 215 control unit 216 buffer memory 217 interface unit 218 notification unit 220 portable terminal device 221 interface unit 222 Control unit 223: Buffer memory 224: Display unit 225: Keyboard 300: Control station 301: Buffer memory 302: Control unit

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-62-5742 (JP, A) JP-A-63-266937 (JP, A) JP-A-63-92132 (JP, A)

Claims (2)

(57) [Claims] A transmitting / receiving unit for performing wireless communication with a base station; a control unit for performing communication control; a memory unit for storing data; an interface unit for performing communication with a portable terminal device; A wireless unit including a notification unit for notifying reception of a message from a base station; an interface unit for performing communication with the wireless unit; a memory unit for storing data; a display unit for displaying a message; and a transmission unit. A mobile terminal comprising: a mobile terminal device having an input unit having a message input function; and wherein the wireless unit and the mobile terminal device are configured to be separable. 2. A plurality of base stations which are connected to a central control station by wire and have at least a transmission / reception antenna, a radio transmission / reception unit and a control unit, and are wirelessly connected to the base station within a service area of the base station. A plurality of mobile stations, the mobile station includes a transmitting / receiving unit for performing wireless communication with the base station, a control unit for performing communication control, a memory unit for storing data, and communication with the mobile terminal device. An interface unit for performing, and a wireless unit including a notification unit for notifying the reception of a message from the base station, an interface unit for performing communication with the wireless unit, a memory unit for storing data, A mobile terminal device including a display unit for displaying a message and an input unit having a transmission message input function, wherein the wireless unit and the mobile terminal device are separable. Wireless communication system characterized in that it is configured to.