JPH0937331A - Radio communication equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To remove the influence of other channels and to surely select a channel by providing this radio communication equipment with prescribed transmitting and analyzing means and avoiding the use of a specific channel by the action of the analyzing means. SOLUTION: At the time of generating an outgoing request, a terminal 110 transmits the request to a station 109 to analyze the request. In accordance with the generation cause of the request, i.e., a line wire or the depression of a speaker button, a sound circuit in the terminal 110 is connected to a prescribed equipment to control sound volume. The station 109 receiving a signal refers to a management table and retrieves an idle channel not to be adjacent to control, disabled and busy channels. Then processing such as channel-free information transmission, line disconnection and information storage is executed in accordance with the existence/non-existence of a line to be connected. The station 109 transmits a signal to the terminal 110 to start a response timer. When the timer, becomes time-out, a usable channel is retrieved and a signal is transmitted to the terminal 110.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio communication device that accommodates a radio telephone terminal in an extension line.

[0002]

2. Description of the Related Art Conventionally, an extension terminal in a button telephone device has been mainly connected to a main device by a wire (see FIG. 17). In recent years, with the spread of the wireless telephone device, the extension telephone terminal is used as a wireless telephone terminal. Button telephone devices have been introduced to house the.

In this type of radio button telephone apparatus, when a telephone call or the like is performed between each radio telephone terminal and the main apparatus, communication is temporarily established by a control channel on a radio line, and then a call channel to be used is determined. And then switch to that call channel. In the multi-channel access wireless communication, the control channel and the call channel are
The frequency band used is defined by the Radio Law as follows.

Wireless base station (parent device) → wireless telephone terminal (child device) 380.2125 to 381,3125 MHz Wireless telephone terminal (child device) → radio base station (parent device) 253.8625 to 254.9625 MHz Channel There are 89 channels at 12.5 KHz intervals, of which 46 channels (38.07500 /
254,000 and 89 channels (381.3125 /
254.9625) two channels are used in particular as control channels.

[0005]

However, in the above-mentioned conventional button telephone apparatus, when a plurality of radio base stations and radio telephone terminals accommodated in the system use radio channels adjacent to each other, crosstalk, noise, etc. occur. However, there is a problem that the call quality is significantly deteriorated.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a wireless communication apparatus capable of reliably selecting a wireless channel that is not affected by other wireless channels. .

[0007]

In order to achieve the above object, the present invention provides a main unit for accommodating a plurality of wireless base stations via a wired line and a plurality of wireless base stations via the wireless line. A plurality of wireless terminals to be accommodated, wherein the wireless base station is a wireless communication apparatus including means for transmitting wireless channel information currently in use to the main apparatus, wherein the main apparatus includes the wireless base station. Means for transmitting radio channel information from the station to a radio base station other than the radio base station, means for analyzing radio channel information from the main device in a radio base station other than the radio base station, and the analysis result And means for avoiding the use of a particular radio channel based on.

[0008]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. [First Embodiment] FIG. 1 is a block diagram showing a system configuration of a button telephone device according to a first embodiment of the present invention. In the figure, reference numeral 101 is the main device of the key telephone device according to the present embodiment, and 102 is the main device 10.
1 is a general subscriber line or a telephone line from a private branch exchange, etc.
1, a local line interface for accommodating 1
The extension of the key telephone apparatus, 105 is an extension-dedicated telephone interface that accommodates the extension of the button telephone apparatus. Reference numeral 106 is a communication path, 107 is a control unit for controlling the entire main device 101 including a telephone terminal, which will be described later,
Reference numeral 108 denotes a storage area unit.

Reference numerals 109a and 109b denote radio base stations connected to the extension 104 of the key telephone system, and 110a and 11b.
Reference numeral 0b is a radio telephone terminal connected to these radio base stations 109a and 109b by radio lines.

FIG. 2 is a block diagram showing an internal configuration of the radio base station 109 shown in FIG. In FIG.
Reference numeral 01 is a line interface unit for accommodating the extension 104 of the key telephone device in a wireless base station, 202 is a voice processing circuit, 203 is a receiving unit 203a and a transmitting unit 203b.
Is a wireless circuit unit configured by. Further, 204 is a control unit for controlling the entire wireless base station, 205 is a modem,
Reference numeral 06 denotes a ROM storing various control programs, for example.
(Read Only Memory), 207 is a RAM (Random Accses Memory) for accumulating various control information, and 208
Is an antenna for transmitting and receiving radio signals.

FIG. 3 is a block diagram showing an internal configuration of the radio telephone terminal 110 shown in FIG. In the figure, reference numeral 301 is a receiver that constitutes the handset 300, and 302 is a transmitter. Further, 303 is a voice processing circuit, 304 is a wireless circuit unit including a receiving unit 304a and a transmitting unit 304b, 305 is a control unit for controlling the entire wireless telephone terminal, and 306 is a modem. Reference numeral 307 denotes a ROM (Read Only Memory) storing various programs, and 3
Reference numeral 08 is an antenna for transmitting and receiving radio signals.

Reference numeral 309 is a speaker button used for starting a call, 310 is a liquid crystal display portion, 311 is a telephone line 1.
External line LED (LED) for displaying the status of 02, 312
Is a function key used when using various functions peculiar to this button telephone device, 313 is a dial information input section, 3
A RAM (Random Accs) 14 stores various control information and the like.
es Memory), 315 is a speaker, 316 is a microphone, and 317 is a speaker L indicating the state of the speaker 315.
It is ED.

Next, the processing in the key telephone device according to the present embodiment will be described in detail.

4 to 7 are flow charts showing communication processing procedures in the main device, the radio base station and the radio telephone terminal according to the present embodiment, and FIGS. 8 and 9 are sequence diagrams relating to transmission control. is there.

When there is a call origination request (step S601 in FIG. 6) in the radio telephone terminal 110, the radio telephone terminal 110 transmits a radio line connection notification (M801 in FIG. 8) to the radio base station 109. Yes (step S60
2). Next, this call origination request is analyzed (step S60).
3). When the call request is made by pressing the outside line button [YES in step S603], the outside line L corresponding to the outside line button n in the outside line LED 311 corresponding to the outside line button n.
The ED is transmitted and blinked (for example, green: 0.5 second cycle) (step S607).

Next, the speaker LED 317 is turned on (step S608), the voice circuit 303 inside the radio telephone terminal 110 is connected to the speaker 315 and the microphone 316, and the volume is adjusted (step S609).

If the call request is not the outside line button n [NO in step S603], it is checked whether the call request is off-hook (step S60).
4). Then, when the call origination request is off-hook [NO in step S604], the speaker LED 317 is turned off (step S605), the voice circuit 303 in the wireless telephone terminal 110 is connected to the receiving section 301 and the transmitting section 302, The volume is adjusted (step S606).

On the other hand, if the call request is made by pressing the speaker button [NO in step S604], the processes of steps S608 and S609 are performed as in the case of pressing the outside line button n. Then, after the above transmission processing is completed, the liquid crystal display unit 31
The display of 0 is cleared (step S610).

Upon receiving the connection notification signal (M801) (step S501 in FIG. 5), the radio base station 109 transmits R
Referring to the wireless channel management table (FIG. 16) stored in the AM 207, according to preset data, the control channel, the unusable call channel, and the call channel in use are not adjacent to each other in order from the youngest number or the oldest number. A free call channel is searched (step S502). For example, when searching from the old number, 74 channels correspond to that.

If there is no available channel as a result of the above search, a message such as a line disconnection request containing information indicating that there is no available communication channel for the wireless telephone terminal 110. Is transmitted, disconnection processing is performed (step S505), and the state transits to the idle state.

If there is a usable channel as a result of the search, the information on the usable channel is stored in the RAM 207 (step S503). Then, the wireless base station 109 transmits a connection response signal (including used channel information) (M802) to the wireless telephone terminal 110 (step S506), and activates a response timer (step S507).

When this response timer times out (see "TO" in FIG. 9) [YES in step S508]
S], the radio base station 109 performs the above steps S502 to S502.
The processing of S507 is repeated to newly search for an available call channel, and a connection response signal (including new call channel information (used channel information 2)) (M901) is transmitted to the wireless telephone terminal 110.

The radio telephone terminal 110 which has received the connection response (M802) [YES in step S701] checks the state of the call channel designated by the radio base station 109,
If it is unusable [NO in step S702],
Wait for a connection response signal (including other channel designation information) newly transmitted from the wireless base station 109 (step S7).
01).

If the call channel is available [YES in step S702], the frequency used is switched from the wireless control channel to the wireless call channel (step S70).
3), a channel movement notification signal (M803) is transmitted to the radio base station 109 (step S704). Then, thereafter, signals are transmitted and received on the communication channel.

On the other hand, in the radio base station 109, before the response timer times out [NO in step S508],
A channel movement notification signal (M80
3) cannot be received, [N in step S509
O], the processing from step S508 onward is repeated.

Before the response timer times out [Step S
[NO in 508], when the channel movement notification signal (M803) is received from the wireless telephone terminal 110 [step S50
If YES in 9], a channel movement response signal (M804) is transmitted to the wireless telephone terminal 110 (step S51).
0).

In addition, a connection notification (M80
5) Send (including the call channel information to be used) (step S511). After that, the radio base station 109 is in the communication state on the radio line, and the radio telephone terminal 110 that has received the channel movement response signal is also in the communication state on the radio line like the radio base station 109.

Connection notification (including used channel information) (M
805) is received (step S401), main device 101
Transmits used channel information (M806, M807) to all the wireless base stations 109 accommodated in the system (steps S402 to S403).

Further, the radio telephone terminal 110 which has received the channel movement response signal (YES in step S705),
The outside line transmission signal (M808) is transmitted to the wireless base station 109 (step S706). This outside line transmission signal (M80
Upon receiving 8), the wireless base station 109 transmits an outside line call (M809) to the main apparatus 101.

The main unit 101 uses the outside line transmission (M80
When 9) is received [YES in step S404], the outside line LED status (M810) is transmitted to the wireless base station 109 (step S405), and then the voice connection request (M).
812) is transmitted (step S406). Continued
Capture an empty line on the line 102 (step S
407). Further, the office line interface 103 and the extension-only telephone interface 105 are connected via the communication path 106 (step S408).

Upon receiving the outside line LED state (M810) and the voice connection request (M812), the wireless base station 109 sends the outside line LED state signal (M811) to the wireless telephone terminal 110.
And a voice connection request signal (M813). In addition, the wireless telephone terminal 110 receives the above-mentioned outside line LED status signal (M8
11) is received (step S707), the outside line LED
311 control the LED. When the voice connection request signal (M813) is received (step S708), the voice processing circuit 303 inside the radio telephone terminal 110 connects the radio circuit unit 304, the speaker 315, and the microphone 316 (step S709).

At this time, in the speaker 315, the main unit 1
Along with the capturing operation of the telephone line 102 by 01, a dial tone (DT) (M814) is heard from the exchange or the private branch exchange. After that, the main apparatus 101 transitions to the outside line calling state.

As described above, according to the present embodiment, each radio base station independently manages radio channel information, and the control channel and the unusable state are set according to the data preset in the radio channel management table. Unused communication channels and unused communication channels that are not adjacent to the communication channel in use are searched in real time to establish and continue communication so that they are unused and are not affected by other wireless channels such as crosstalk and noise. The wireless channel can be reliably selected. [Second Embodiment] Hereinafter, a second embodiment of the present invention will be described.

10 to 12 are flowcharts showing the communication processing procedure in the main device, the radio base station and the radio telephone terminal according to the present embodiment, and FIGS. 13 and 14 are sequence diagrams relating to the communication control. is there. Note that, here, for convenience of explanation, it is assumed that the wireless telephone terminal 110C is in an outside line call (FIG.
M1301, M1302).

Further, since the system configuration and the like of the key telephone device according to the present embodiment is the same as the system configuration according to the first embodiment, their illustration and description are omitted here.

When the main unit 101 detects an external line incoming (M1303) from the telephone line 102 (step S1001 in FIG. 10), the main unit 101 analyzes the data stored in the storage area unit 108, and detects the external line incoming in the system. A connection request (M1304, 1314) is transmitted to the wireless base station 109 to which all wireless telephone terminals 110 are connected (step S).
1002-S1003).

This connection request (M1304, M1314)
The wireless base station 109 that has received (step S1101 in FIG. 11) refers to the wireless channel management table stored in the RAM 207, and in accordance with preset data, the control channel, unusable, in order from the youngest or the oldest. And a free call channel that is not adjacent to the call channel being used (step S1102).
For example, when searching from the youngest number, 13 channels correspond to that.

As a result of the above search, if there is no usable channel [NO in step S1103], connection failure including the fact that there is no usable communication channel to the main unit 101, etc. Send the message of
Then, disconnection processing is performed (step S1104), and the state transits to the idle state.

If there is a usable channel as a result of the search [YES in step S1103], the information of the usable channel is stored in the RAM 207 (step S1105). Then, the wireless base station 109
Is a connection request signal (including used channel information) (M13
05, M1315) to the wireless telephone terminal 110 (step S1106), and the response timer is activated (step S1107).

When this response timer times out (see "TO" in FIG. 14) [Y at step S1108]
ES], the radio base station 109 performs the above step S110.
The processing from 2 to S1107 is repeated to newly search for an available call channel, and a connection response signal (including new call channel information (used channel information 2)) (M140
1) is transmitted to the wireless telephone terminal 110.

This connection request signal (M1305, M131
The wireless telephone terminal 110 that has received 5) (step S12
01) checks the state of the communication channel designated by the wireless base station 109, and if it is unusable [step S12
No in 02], waits for a connection request signal (including another channel designation information) newly transmitted from the wireless base station 109 (step S1201).

However, if the call channel is available [YES in step S1202], a connection confirmation signal (M1306, M1316) is transmitted to the radio base station 109 (step S1203).

On the other hand, in the radio base station 109, before the response timer times out, [N in step S1108]
O], a connection confirmation signal (M130
6, M1316) cannot be received [step S11
09, NO], and the processes from step S1108 onward are repeated.

When the connection confirmation signal (M1306, M1316) is received from the wireless telephone terminal 110 [NO in step S1108] before the response timer times out [YES in step S1109], the channel movement request signal ( M1307 and M1317) are transmitted (step S1110).

This channel movement request signal (M1307,
M1317) is received [YES in step S1204.
S] The radio telephone terminal 110 switches the used frequency from the radio control channel to the radio communication channel (step S1).
205). Then, a channel movement confirmation signal (M1308) is transmitted to the radio base station 109 (step S1).
206). Then, thereafter, signals are transmitted and received on the communication channel.

The above channel movement confirmation signal (M130
8, M1318) is received (step S1111), the radio base station 109 confirms the connection with the main device 101 (M130).
9, M1319) (including information about the call channel to be used) is transmitted (step S1112). After that, the wireless base station 109 and the wireless telephone terminal 110 are in a communication state on the wireless line.

On the other hand, the main apparatus 101 which has received the connection confirmation (including the used channel information) (M1309, M1319) (step S1004) uses the used channel information (for all the wireless base stations 109 accommodated in the system) M
1310, M1311, M1320, M1321) is transmitted (steps S1005 to S1006).

Next, an external line incoming call (M1312, M1322) is transmitted to the wireless base station 109 to which the wireless telephone terminal 110 capable of an external line incoming whose wireless line probability is confirmed is connected (steps S1007 to S1009). .

Then, the radio base station 1 which receives the incoming call from the outside line
09 sends an external line incoming signal (M131) to the wireless telephone terminal 110.
2, M1322), the wireless telephone terminal 110 that receives this signal (step S1207) controls the lighting state of the corresponding outside line LED 311 (here,
Flashing red rapidly) (step S1208). After this,
The wireless telephone terminal 110 makes a transition to the outside line incoming state.

In this way, even when processing an incoming call to an outside line,
By searching for an empty call channel that is not adjacent to the call channel in use in real time to establish and continue communication, a wireless channel that is not affected by other wireless channels can be reliably selected. <Modification> In the second embodiment, after the main apparatus 101 receives the connection confirmation from the wireless base station 109 as the transmission timing of the used channel information, each wireless base station 109 uses the used channel information as a single message. (M
1310, M1311), but the present invention is not limited to this. For example, as shown in FIG. 15, the used channel information is set to the following after the establishment of the wireless line to the wireless telephone terminal 110 accommodated in the system. It may be included in the connection request (M1501) transmitted to the wireless telephone terminal 110.

In the first and second embodiments, the control for avoiding the use of adjacent radio channels is performed. However, regarding the number of radio channels,
It may be a plurality of adjacent wireless channels or a plurality of adjacent continuous wireless channels.

Further, in the first and second embodiments, the radio base station may be the main device.

The present invention may be applied to a system composed of a plurality of devices or an apparatus composed of one device. Further, it goes without saying that the present invention can be applied to the case where it is achieved by supplying a program to a system or an apparatus. In this case, the storage medium storing the program according to the present invention constitutes the present invention. Then, by reading the program from the storage medium into the system or device, the system or device operates in a predetermined manner.

[0054]

As described above, according to the present invention,
Each wireless base station independently manages wireless channel information, and by transmitting and receiving its usage status in real time via the main device, avoiding the use of wireless channels that meet specific conditions, and unused and Therefore, it is possible to reliably select a wireless channel that is not affected by other wireless channels.

[0055]

[Brief description of drawings]

FIG. 1 is a diagram showing a system configuration of a key telephone device according to an embodiment of the present invention.

FIG. 2 is a block diagram illustrating a configuration of a wireless base station.

FIG. 3 is a block diagram showing a configuration of a wireless telephone terminal.

FIG. 4 is a flowchart showing a communication processing procedure in the main device according to the first embodiment.

FIG. 5 is a flowchart showing a communication processing procedure in the wireless base station according to the first embodiment.

FIG. 6 is a flowchart showing a communication processing procedure in the wireless telephone terminal according to the first embodiment.

FIG. 7 is a flowchart showing a communication processing procedure in the wireless telephone terminal according to the first embodiment.

FIG. 8 is a diagram showing a sequence relating to transmission control.

FIG. 9 is a diagram showing a sequence relating to transmission control.

FIG. 10 is a flowchart showing a communication processing procedure in the main device according to the second embodiment.

FIG. 11 is a flowchart showing a communication processing procedure in the wireless base station according to the second embodiment.

FIG. 12 is a flowchart showing a communication processing procedure in the wireless telephone terminal according to the second embodiment.

FIG. 13 is a sequence diagram relating to communication control according to the second embodiment.

FIG. 14 is a sequence diagram relating to communication control according to the second embodiment.

FIG. 15 is a sequence diagram of communication control according to a modification.

FIG. 16 is a diagram showing a radio channel management table.

FIG. 17 is a diagram showing a system configuration of a conventional key telephone device.

[Explanation of symbols]

 101 Main Unit 102 Telephone Line for General Subscriber Line / Private Branch Exchange 103 Station Line Interface 104 Extension for Button Telephone Unit 105 Interface for Extension Telephones 106 Call Path 107 Control Unit 108 Storage Area 109 Radio Base Station 110 Radio Telephone Terminal

Claims (6)

[Claims] 1. A radio base station, comprising: a main device for accommodating a plurality of radio base stations via a wired line; and a plurality of radio terminals accommodated in the plurality of radio base stations via a radio line. Is a wireless communication device including means for transmitting to the main device the wireless channel information currently in use, wherein the main device is configured to transmit the wireless channel information from the wireless base station to a wireless base station other than the wireless base station. And a means for analyzing radio channel information from the main device in a radio base station other than the radio base station, and means for avoiding use of a specific radio channel based on the analysis result. A wireless communication device characterized by the above. 2. The wireless communication device according to claim 1, wherein the specific wireless channel is a wireless channel adjacent to a wireless channel related to the wireless channel information. 3. The wireless communication device according to claim 1, wherein the specific wireless channel is a plurality of wireless channels adjacent to a wireless channel related to the wireless channel information. 4. The wireless communication device according to claim 1, wherein the specific wireless channel is a plurality of continuous wireless channels adjacent to a wireless channel related to the wireless channel information. 5. The wireless communication device according to claim 1, wherein the wireless base station functions as the main device. 6. The plurality of wireless terminals are accommodated in the plurality of wireless base stations via a wireless channel adopting a multi-channel system for a wireless channel composed of a control channel and a communication channel. The wireless communication device according to claim 1.