JP3110069B2 - Call control method in wireless telephone device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a call control method suitable for a medium-capacity radio telephone apparatus having a relatively small number of radio zones for providing radio services.

[0002]

2. Description of the Related Art As one type of wireless telephone device, one or more wireless telephones, a main device for controlling connection of one or more lines to an external line or a connection to an internal line, and a plurality of devices for performing wireless service are provided. A wireless telephone device that is provided in at least one of each of the wireless zones and that includes a wireless telephone used in the wireless zone of the own device under the control of the main device and a connection device that performs wireless connection. ing.

[0003] In such a call connection in the conventional wireless telephone device, when a user performs a call operation to the wireless telephone, the wireless telephone adds a wireless zone number stored therein. The connection device which transmits the transmitted call signal, receives the transmitted call signal among the connection devices installed in each wireless zone, and the connection device whose wireless zone number matches the own wireless zone number is a communication channel. Is notified to the wireless telephone that transmitted the calling signal, the self-connection device itself is switched to the communication channel, and the wireless telephone is also switched to the notified communication channel.

Conventionally, the above-described call control system is employed, so that at least at the time of a call operation, the wireless zone number stored in the wireless telephone matches the wireless zone in which the wireless telephone exists. Must be updated. Therefore, in the conventional wireless telephone device, the following location registration processing as employed in a large-capacity wireless telephone device having a large number of wireless zones is performed.

[0005] Assume that the number of wireless zones is four, and that the connection devices CE2-1, CE2-2, CE2-3, CE2
-4 is installed, and a certain radio telephone RTEL3-1
Is moving from the wireless zone where the connection device CE2-1 is installed to the wireless zone where the connection device CE2-3 is installed. In such a case, when determining that the user of the wireless telephone RTEL3-1 has moved to another wireless zone, the user performs a location registration operation before making a call. As a result, as shown in FIG.
A location registration signal is transmitted from L3-1.

When each of the connection devices CE2-1 to CE2-4 receives the position registration signal, it measures the received electric field level and, as shown in FIG. 8, transmits the position registration signal including the measured received electric field level information. Transmit to main device ME1. In the example of the figure, the connection devices CE2-1, CE2-2, CE2-3,
From CE2-4, 20dBμV, 10dBμV, 40d
The position registration signal including the measured values of BμV and 10 dBμV is transmitted to main device ME1.

Next, the main device ME1 is connected to each of the connection devices CE2-
1 to CE2-4, the received electric field level indicated by the position registration signal is compared, a connection device having the highest received electric field level is selected, and a position registration response signal is transmitted to the selected connection device. A location registration end signal is transmitted to the other connected devices. In the case of the above-described example, as shown in FIG. 8, since the measured value of the received electric field level from the connection device CE2-3 is the highest, the location registration response signal is transmitted to the connection device CE2-3, and the other connection devices CE2-1, CE2
-2, CE2-4, a location registration end signal is transmitted.

Each of the connection devices CE2-1 to CE2-4 proceeds to a standby process when receiving a location registration end signal as a response to the location registration signal, and transmits a location registration signal when receiving a location registration response signal. Wireless telephone RTEL3
-1, a location registration response signal including the wireless zone number of the self-connection device is transmitted. Therefore, in the above example, FIG.
As shown in FIG.
A location registration response signal including the wireless zone number “3” is transmitted to 3-1.

Radio telephone R which has received the location registration response signal
TEL3-1 is a wireless zone number "3" included in the TEL3-1.
Is stored internally. The stored wireless zone number is included in the call signal as described above when the user performs a call operation thereafter.

[0010]

As described above, the conventional wireless telephone apparatus determines whether or not the user has moved to another wireless zone, and if so, performs a location registration operation and places a call. Operation had to be performed, and the operability was poor.
In addition, a middle-capacity wireless telephone device having about four wireless zones also requires location registration processing similar to that of a large-capacity wireless telephone device, and there is a problem that a development period is required for the scale.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and a purpose thereof is to provide a call control method in a wireless telephone device which can eliminate a position registration operation and a position registration process.
Is to provide a law .

[0012]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a radio telephone, a main unit, and a radio telephone which is controlled by the main unit and which is located in a radio zone where the radio telephone is located. A connection device for performing a connection, a call control method in a wireless telephone device comprising at least one connection device arranged in each of a plurality of wireless zones,
The radiotelephone, at the time of a call request from a user, a process of transmitting a position confirmation signal, a process of transmitting a level report request signal sequentially specifying a radio zone number, a response to the transmitted level report request signal By receiving the level report signal, a call signal designating a wireless zone number included in the level report signal that has reported the maximum reception level measurement value among them is transmitted, and a call included in the level report signal is transmitted. The process of switching to the communication channel specified by the channel information is performed continuously, the connection device measures the reception level when receiving the position confirmation signal, and changes its own wireless zone number after receiving the position confirmation signal. the radio zones measure the speech channel information and its own reception level measured when receiving the level report request signal specified Process of transmitting a level report signal including a signal, when receiving a call signal specifying its own wireless zone number after transmitting the level report signal, a process of switching to the communication channel notified by the level report signal, It is done continuously.

[0013] Further, the connection device waits when it does not receive a level report request signal within a predetermined time after receiving the position confirmation signal and when it does not receive a call signal within a predetermined time after transmitting the level report signal. It shifts to processing.

[0014]

In a call control method for a wireless telephone device according to the present invention, when a user of a wireless telephone performs a call operation using a keyboard or the like, a position confirmation signal and a wireless zone are transmitted from the wireless telephone. A level report request signal whose number is designated in order is transmitted in that order. The transmitted position confirmation signal is received by the connection device closest to the wireless telephone at the maximum reception level, and the reception level becomes smaller as the connection device is farther away,
In some cases, it will not be received.

In the connection device that has received the position confirmation signal,
With its receiving level is measured, the level report signal including the measurement value and call channel information and its own radio zone number, the level report request signal specifying the own radio zone number received from the radiotelephone When to send.

Therefore, the radio telephone can know the radio zone in which it is located by the radio zone number included in the level report signal that has reported the maximum reception level measurement value, and can communicate the call in the level report signal. From the channel information, it is possible to know the communication channel to be switched. Therefore, the radio telephone transmits a call signal specifying the radio zone number included in the level report signal that has reported the maximum reception level measurement value, and specifies the communication channel information included in the level report signal. Switch to the communication channel to be used. On the other hand, the connection device that has transmitted the level report signal receives the call signal specifying its own wireless zone number, and switches to the communication channel notified by the level report signal.

[0017]

Next, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a configuration example of a wireless telephone device to which the present invention is applied.

The wireless telephone device of this example is a medium-capacity wireless telephone device which provides wireless services for four wireless zones Z1 to Z4, and has a wired telephone line 171 connected to an outside line.
A main device ME1 connected to the outside line group L1 including the communication lines 173 to 173 and performing connection control with the outside line, connection control with the inside line, and other control of the entire system, and a plurality of push buttons usable in any of the wireless zones Z1 to Z4. Wireless telephones RTEL3-1 to RTEL3-6 such as portable cordless telephones
And a plurality of connection devices CE2-1 to CE2-8 controlled by main device ME1 connected by connection lines 161 to 168 included in connection line group L2 to perform wireless connection with radio telephones RTEL3-1 to RTEL3-6. It is composed of Here, the connection devices CE2-1 and CE2-5 cover the wireless zone Z1, and the connection devices CE2-2 and CE2-6.
Covers the wireless zone Z2, and the connection devices CE2-3 and C2
E2-7 covers the wireless zone Z3 and is connected to the connection device CE2.
-4 and CE2-8 cover radio zone Z4.
Note that the main device ME1 operates as a wireless zone Z1 as an initial operation.
Connection device CE2-1 of the wireless zone Z2
2-2, the connection devices CE2-3 of the wireless zone Z3, and the connection devices CE2-4 of the wireless zone Z4 are set to a standby state in which a call can be made and received, and the other connection devices CE2-5 to CE2-
8 is set to a standby state, and when a connection device in a standby state is used, another paired connection device in the wireless zone is set to a standby state in which a call can be made and received.

Referring to FIG. 2, main device ME1 includes external line interfaces 101 to 103 connected to external line group L1 including wired telephone lines 171 to 173, and switches connected to external line interfaces 101 to 103. 11
1 and the hold sound source 151 connected to the switch 111.
And connection device interfaces 121 to 128, external line interfaces 101 to 103, switch 111, connection device interfaces 121 to 128, and hold sound source 15.
1 and a power supply 141 connected to AC 100 V and supplying power to each unit, and the connection device interfaces 121 to 128 are connected to the connection devices CE2- by connection lines 161 to 168 of the connection line group L2. 1 to CE2
-8. When connecting an external line,
Under the control of the control unit 131, the corresponding external line interface and the corresponding connection device interface are connected through the switch 111 to enable communication, and when the extension line is connected, the connection between the corresponding connection device interface and the switch 11 are performed.
1 and a call is made possible.

Referring to FIG. 3, the connection device CE2-i
(I = 1 to 8) indicate the hybrid 201 and the power supply 204 connected to the main device ME1 via the connection line 20i, the transceiver 202 connected to the hybrid 201, the antenna 205 connected to the transceiver 202, and the reception Level judgment unit 207, hybrid 201, transceiver 20
2 and control unit 2 connected to reception level determiner 207
03 is included.

Referring to FIG. 4, a wireless telephone RTEL3
−j (j = 1 to 6) represents an antenna 307, a transceiver 301 connected to the antenna 307, a control unit 302, a microphone 303 and a speaker 304 connected to the transceiver 301, and a control unit 302. Display unit 3 connected
05, a keyboard 306 and a buzzer 310, and a battery 308 for supplying power to each unit. The calling operation can be performed by the keyboard 306, and when a call is received, the buzzer 310 sounds and the user is notified of that. The call is performed using the microphone 303 and the speaker 304.

FIG. 5 is a flowchart showing an example of a call connection operation executed by each wireless telephone, FIG. 6 is a flowchart showing an example of a call connection operation executed by each connection device,
FIG. 7 is an operation time chart for calling connection when the user of the wireless telephone RTEL3-1 of FIG. 1 performs a calling operation. Hereinafter, with reference to each drawing, the wireless telephone RTEL3
The operation of the call connection system according to the present embodiment will be described with reference to an example in which a call operation is performed at -1.

The control unit 302 of the radio telephone RTEL3-1
Performs standby processing for determining whether an incoming call signal has been received from the connection device in step S1 or S2 in FIG. 5 and whether or not a call request has been made on the own telephone. When the user performs a call operation on keyboard 306 at time t1 in FIG.
Detects that there is a call request (step S2) and turns on the transmission output (TX) at time t2 (step S2).
3), a position confirmation signal is transmitted from the transceiver 301 via the antenna 307 several times (step S4). When receiving the incoming call signal from the connection device, the wireless telephone RTEL3-1 shifts to an incoming call process (step S16).

Next, the control unit 302 of the radiotelephone RTEL 3-1 outputs “1”, “2”, “3”,
A level report request signal in which the wireless zone numbers of “4” are specified in order is transmitted from the transceiver 301 via the antenna 307 (steps S5, S6, S7, S8, S9, S1).
0). As a result, a level report request signal specifying the wireless zone number “1” is transmitted at time t3 in FIG. 7, a level report request signal specifying the wireless zone number “2” is transmitted at time t4, and the wireless report is performed at time t5. A level report request signal designating zone number "3" is transmitted, and a level report request signal designating wireless zone number "4" is transmitted at time t6. Also, the control unit 30 of the wireless telephone RTEL3-1
2 determines in parallel with the transmission of the level report request signal whether or not the level report signal as a response to the level report request signal has been received by the transceiver 301 (step S11). Is received, the received electric field level included in the level report signal,
Information such as the designated communication channel and wireless zone number is stored therein (step S12).

On the other hand, each connection device CE2-1 to CE2-3
The control unit 203 performs standby processing to determine whether or not an incoming call signal has been received from the main device ME1 and whether or not a position confirmation signal has been received from the wireless telephone in steps S21 and S22 in FIG. Here, as shown in FIG. 1, the radio telephone RTEL3-1 exists at a position where the radio zone Z1 and the radio zone Z3 overlap and is separated from the radio zones Z2 and Z3.
The position confirmation signal transmitted in step S4 in FIG. 5 of EL3-1 is received by the connection device CE2-1 in the wireless zone Z1 and the connection device CE2-3 in the wireless zone Z3.

When the control units 203 of the connection devices CE2-1 and CE2-3 detect that the transceiver 202 has received the position confirmation signal via the antenna 205 (step S2).
22), the reception level determiner 207 measures the reception electric field level of the position confirmation signal. At this time, as shown in FIG.
The measurement result of μV was obtained.
Assume that the measurement result of dBμV is obtained.

When the connection devices CE2-1 and CE2-3 measure the reception electric field level, the connection devices CE2-1 and CE2-3 operate until the time T1 seconds elapses.
Waits for the reception of the level report request signal designating its own wireless zone number (steps S24, S25, S2
6, S27). Then, if a level report request signal with a matching wireless zone number cannot be received even after the elapse of T1 seconds, the process returns to step S21 to perform a standby process. When such a level report request signal is received, The transmission output is turned on (step S28), and a level report signal including the reception electric field level measured in step S23, the communication channel to be used, and the own wireless zone number, etc., is transmitted and received by the transceiver 20.
2 is transmitted (step S29), and when the transmission is completed, the transmission output is turned off (step S30). Until T2 seconds elapse, the mobile station waits for a call signal designating its own wireless zone number (steps S31, S32, S3).
3, S34).

Therefore, as described above, when the level report request signal of the wireless zone number "1" is transmitted from the wireless telephone RTEL3-1 at time t3 in FIG. 7, the connection device CE2-
In response to the reception, the transmission output is turned on at time t4 as shown in FIG. 7, and after transmitting the measurement result of 20 dBμV and the level report signal including the communication channel and the radio zone number “1”, the transmission output 1 Is turned off, and a call signal designating its own wireless zone number "1" is waited until T2 seconds elapse. When the level report request signal of the wireless zone number “3” is transmitted from the wireless telephone RTEL3-1 at time t5, the connection device CE2-3 responds to the reception at time t6 as shown in FIG. After the transmission output is turned on and the level report signal including the measurement result of 40 dBμV, the communication channel, and the radio zone number “3” is transmitted, the transmission output is turned off. Until T2 seconds elapse, the own radio zone number “ A call signal specifying "3" will be waited for.

When the reception of the level report signal is detected in step S11 of FIG. 5 as described above, the radiotelephone RTEL3-1 stores necessary information in step S12. -1, CE2
-3 transmits a level report signal, the radio telephone R
The control unit 203 of the TEL 3-1 includes, in the level report signal received from the connection device CE2-1, information such as a received electric field level of 20 dBμV, communication channel information, and a wireless zone number “1”. Information such as the received electric field level of 40 dBμV, communication channel information, and wireless zone number “3” in the report signal is stored.

Control unit 302 of radio telephone RTEL3-1
After transmitting the required number of level report request signals,
As shown in the figure, after waiting for T4 seconds (step S1)
3), a wireless zone number corresponding to the highest received electric field level among the received electric field levels stored in step S12 is selected, and a call signal specifying the wireless zone number is transmitted from the transceiver 301 (step S14). . Then, the connection device of the selected wireless zone number is switched to the specified communication channel (step S15). Therefore,
In the state where the above information is stored,
A call signal specifying the wireless zone number “3” is transmitted, and switching to the communication channel specified by the communication channel information is performed.

When a call signal designating the wireless zone number "3" is transmitted from the wireless telephone RTEL3-1, the connection devices CE2-1 and CE2 waiting to receive the call signal are transmitted.
-3, since the connection device CE2-1 cannot receive a call signal designating its own wireless zone number "1" within a predetermined time, as shown in FIG.
The process returns to 1 to perform the standby process. On the other hand, since the connection device CE2-3 receives the calling signal designating its own wireless zone number "3" within a predetermined time, the call specified by the calling signal at time t8 as shown in FIG. The call connection is made by switching to the channel (step S35).
Subsequent operations are the same as in the related art.

[0032]

As described above, according to the present invention,
When calling a wireless telephone, the best wireless zone is checked, and a call signal is sent to the connection device that covers the wireless zone. Therefore, whether the user himself has moved to another wireless zone as in the past. Is determined, and if necessary, the necessity of performing a position registration operation before a calling operation is eliminated, and operability is improved. In addition, since it is not necessary to support a location registration process similar to that of a large-capacity wireless telephone device in a medium-capacity wireless telephone device having about four wireless zones, the development period can be reduced.

[Brief description of the drawings]

FIG. 1 is a system block diagram illustrating a configuration example of a wireless telephone device to which the present invention has been applied.

FIG. 2 is a block diagram illustrating a configuration example of a main device.

FIG. 3 is a block diagram illustrating a configuration example of a connection device.

FIG. 4 is a block diagram illustrating a configuration example of a wireless telephone.

FIG. 5 is a flowchart illustrating an example of a call connection operation performed by the wireless telephone.

FIG. 6 is a flowchart illustrating an example of a call connection operation performed by the connection device.

FIG. 7 is an operation time chart for calling connection when a user of the wireless telephone RTEL3-1 performs a calling operation.

FIG. 8 is a time chart of a location registration operation performed by a conventional wireless telephone device.

[Explanation of symbols]

 ME1 Main device Z1 to Z4 Wireless zone CE2-1 to CE2-8 Connection device RTEL3-1 to RTEL3-6 Wireless telephone L1 External line group 171 to 173 Wired telephone line over external line L2 Connection line group 161 ~ 168 ... Connection line

Continuing on the front page (72) Inventor Shin Saegusa 5-7-1 Shiba, Minato-ku, Tokyo Within NEC Corporation (72) Inventor Naoyasu Nishimura 1-6-1, Uchisaiwaicho, Chiyoda-ku, Tokyo Nippon Telegraph and Telephone Corporation Inside the company (72) Inventor Shinji Kumagaka 1-6, Uchisaiwaicho, Chiyoda-ku, Tokyo Nippon Telegraph and Telephone Corporation (72) Inventor Hiroyuki Misawa 2-57 Koishikawa, Bunkyo-ku, Tokyo Meisei Electric Co., Ltd. (72) Inventor Ichiro Tamura 2-5-7 Koishikawa, Bunkyo-ku, Tokyo Meisei Electric Co., Ltd. (56) References JP-A-2-3938 (JP, A) JP-A-1-309530 (JP, A) JP-A-59-161138 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H04Q ^7/ 00-7/38

Claims (2)

(57) [Claims] A wireless telephone, a main device, and a connection device controlled by the main device and connected to the wireless telephone in a wireless zone in which the own device is located, wherein each of the plurality of wireless zones includes In a call control method in a wireless telephone device including at least one connection device, the wireless telephone transmits a position confirmation signal when a call is requested from a user, and sequentially transmits a wireless zone number. The process of transmitting the specified level report request signal, and receiving the level report signal as a response to the transmitted level report request signal, the level report signal being included in the level report signal that has reported the maximum reception level measurement value. A process of transmitting a call signal specifying a wireless zone number and switching to a call channel specified by call channel information included in the level report signal Performed continuously, the connecting device, the process of measuring the receiving level at the time of reception of the position confirmation signal, when receiving the level report request signal specifying its own radio zone number after receiving the localization signal A process of transmitting a level report signal including the measured value of the measured reception level, the communication channel information, and its own wireless zone number, and receiving a call signal specifying its own wireless zone number after transmitting the level report signal A call control method in a wireless telephone device, characterized in that a process for switching to a communication channel notified by the level report signal is performed continuously when the call is made. 2. The communication apparatus according to claim 1, wherein the connection apparatus does not receive a level report request signal within a predetermined time after receiving the position confirmation signal, and does not receive a call signal within a predetermined time after transmitting the level report signal. 2. The call control method in a wireless telephone device according to claim 1, wherein the process proceeds to a process.