JPH01293743A - Connection control system in radiotelephone system - Google Patents

Abstract

PURPOSE:To eliminate that a radiotelephone set receives an unnecessary call by controlling the receiving of a signal after a code to indicate a group included in any incoming call signal sent from a connecting device when the radiotelephone set controls its connection. CONSTITUTION:When the incoming call signal from a wired telephone line 2 is sent to a radio line 4, for each of radiotelephone sets 5a..., an electric field detecting circuit 26 detects the signal with intermittent reception. A receiver 21 extends a receiving state and reads a group code included in the incoming call signal. Time twice as long as incoming call signal time is enough for extended time at that time, and since the group code is common among the telephone sets 5a..., the receiver 21 can read information related to the group code included in any incoming call signal. When the read group code coincides with another group code set by the receiver 21 itself, the receiver 21 further extends receiving time and receives all kinds of incoming call signals from a connecting device 3. On the other hand, when the read group code does not coincide with the group code set by the receiver 21, the receiver 21 judges that the incoming call is not the one for the receiver 21 itself and does not extend the receiving time since it is unnecessary to read a individual code included in the incoming call.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a connection control method in a radio telephone device having a plurality of sets of radio telephones.

(Prior Art) In a wireless telephone device called a so-called code response, which consists of a connecting device connected to a wired telephone line and a wireless telephone connected to this connecting device via a wireless line, connection control is generally performed as shown below. is being carried out.

That is, during standby, the wireless telephone performs intermittent reception on the control channel of the wireless line. When a call arrives from the line to the connection device, an incoming call signal is sent from the connection device to the control channel.

When the radiotelephone detects an incoming call signal from the control channel,
The state of receiving this, that is, the reception time is extended. Note that the reception time at this time is twice as long as the incoming call signal time in order to completely receive the incoming call signal. When the wireless telephone receives an incoming call signal, it shifts to a response operation.

Incidentally, in recent years, wireless telephone devices have been developed in which a plurality of wireless telephones are connected to one connecting device via a wireless line. In this case as well, when the connected device receives a call from the wired telephone line, the connected device enters the transmitting state (see Figure 5 (a).
)) An incoming call signal is sent from this connection device to the control channel, but in this case, a separate time slot is set for the incoming call signal for each radio telephone, for example, when there are two sets of radio telephones, There are two types of incoming call signals Sa and Sb corresponding to each other (FIG. 5(b)).

Therefore, each wireless telephone needs to receive all types of incoming call signals in order to determine that the incoming call signals include an incoming call to itself. In other words, it is necessary to receive the call signal for a time equal to the time T multiplied by the type of the call signal, that is, the number of wireless telephone sets, plus the time T for the call signal (Fig. 5 (C) and (d)).

(Problem to be Solved by the Invention) By the way, when multiple sets of such radio telephone devices are used in close proximity, the radio telephones belonging to other groups must also perform similar reception when receiving an incoming call. Figure 5(e)
). For this reason, there is a problem that the reception time of the radio telephone during connection control becomes longer, and the life of a battery such as a dry battery used by the radio telephone is shortened due to this.

The present invention has been made in response to such circumstances, and an object of the present invention is to provide a connection control method for a radio telephone device that can shorten the reception time of the radio telephone during connection control.

[Structure of the Invention] (Means for Solving the Problems) In other words, the connection control method in the wireless telephone device of the present invention includes a connection device connected to a wired telephone line, a control channel and a plurality of communication channels in this connection device. It consists of multiple sets of wireless telephones connected via a wireless line consisting of
In a wireless telephone device in which the wireless telephone performs intermittent reception on the control channel during standby, when the connecting device receives an incoming call from the wired telephone line, the connecting device transmits a predetermined group code set for each connecting device to the control channel. After transmitting the code to the control channel, the individual code of the radio telephone related to the incoming call among the individual codes set for each radio telephone is sent to the control channel, and the radio telephone transmits at least the group code and the above code during intermittent reception. When an incoming call signal consisting of an individual code is detected, the reception time is extended until at least the group code can be received, and when the received group code is from a connected device of the own group, at least all the individual codes can be received. The feature is that the reception time can be extended again.

(Function) In the connection control method in the radio telephone device of the present invention, the radio telephone controls subsequent reception from the code indicating the group included in any incoming call signal sent from the connection device during connection control. I can do it.

Therefore, the wireless telephone no longer receives unnecessary reception.

(Example) Hereinafter, details of an example of the present invention will be described based on the drawings.

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

The wireless telephone device 1 shown in the figure includes a connecting device 3 connected to a wired telephone line 2, and a plurality of sets of wireless telephones 5a, 5b, . . . connected to the connecting device 3 via a wireless line 4.
It is composed of.

The connection device 3 includes a control circuit 6 that performs connection control, and according to instructions from the control circuit 6, the oscillation frequency of the synthesizer 7 is variably set to specify the control channel and communication channel of the transmitter 8 and receiver 9. Then, the incoming call detection circuit 1
After an incoming call is detected by the transmitter 8, the call signal that arrives via the wired telephone line 2 connected by the line relay 11 is guided to the transmitter 8 via the line relay 10 and the hybrid circuit 12, and is transmitted and received from the transmitter 8. Shared device 13
and transmits it to the wireless line 4 via the antenna 14. Also, the receiver 9 receives signals arriving from the wireless telephones 5a, 5b, . At the same time, the received data signal is sent to the control circuit 6. The electric field strength of the radio waves received by the receiver 9 is detected by an electric field signal detection circuit 15 such as a carrier squelch circuit or a noise squelch circuit, and this electric field strength information is notified to the control circuit 6. Control circuit 6
performs the above-mentioned connection control based on these data signals or field strength information, and transmits the data signals from the control circuit 6 to the transmitter 8, duplexer 13, and antenna 1.
4 to the wireless line 4. In addition, this connection device 3 connects the output (100V) of the commercial power supply 16 to the power supply circuit 17.
This is rectified by a ionizer and used as a power source.

On the other hand, each radio telephone 5as5b... has almost the same configuration, and is equipped with a control circuit 18 for connection control, and variably sets the oscillation frequency of the synthesizer 19 according to instructions from the control circuit 18, so that the transmitter 20 and Specify the control channel and speech channel of the receiver 21. Note that here, the control channel of the wireless line 4 is designated as one predetermined control channel, while the call channel is selectively designated as a call channel that is determined to be free by the connection device 3 from among the plurality of call channels. be done. And wireless telephone 5a...
- receives a signal arriving from the connection device 3 via the wireless line 4 via the antenna 22 at the receiver 21, supplies the received call signal to the receiver 23 and outputs it as voice, and also outputs the received data signal. The signal is sent to the control circuit 18.

Further, the audio signal inputted by the transmitter 24 is sent from the transmitter 20 to the wireless line 4 via the antenna 25. The electric field strength of the radio waves received by the receiver 21 is detected by an electric field signal detection circuit 26 such as a carrier squelch circuit or a noise squelch circuit, and this electric field strength information is transmitted to the control circuit 18.
be informed. The control circuit 18 performs the above-mentioned connection control based on these data signals or field strength information, and sends the data signal from the control circuit 18 to the wireless line 4 via the transmitter 20 and antenna 25. Moreover, this wireless telephone 5a... is equipped with a battery 2 such as a dry battery.
7 is used as a power source. Furthermore, this wireless telephone 5a.
. . . includes a hook switch 28 that detects on-hook/off-hook of a handset (not shown) consisting of a receiver 23 and a transmitter 24, a key switch 29 such as a push button dial, and a speaker 3 that emits a ringing tone when a call is received.
0 is provided.

Note that the connection device 3 and each wireless telephone 5a... have ROMs 31, 32a, 32 in which identification codes are registered, respectively.
It has b... Each wireless telephone 5a s5b・
The identification codes registered in the ROMs 32a, 32b, etc. include a group code that is common between the connecting device 3 and each wireless telephone 5a, and a group code that is different between each wireless telephone 5a. There is a separate code. The ROM 31 of the connection device 3 contains the above-mentioned group code,
Individual codes registered in the ROM 31a of each wireless telephone 5a are registered.

Next, the connection control operation of the radio telephone device 1 having such a configuration will be explained based on the flowchart shown in FIG. 2 and the time chart shown in FIG. 3.

During standby, the wireless telephone 5a... uses the synthesizer 19.
, set the receiver 21 to the off state (step 201)
, as shown in FIGS. 3(c) to 3(e), this synthesizer 19 and receiver 21 perform a predetermined time t1 every predetermined time T1.
By performing reception (step 203) and setting a timer (step 202), an intermittent reception state is entered.

On the other hand, when the connection device 3 detects an incoming call from the wired telephone line 2 with the incoming call signal detection circuit 10 (step 204),
Set the oscillation frequency of synthesizer 7 to the control channel,
As shown in FIG. 3(a), the transmitter 8 is set to the on state (step 205), and as shown in FIG. 3(b),
The incoming call signal among the data signals is transmitted from the control circuit 6 to the transmitter 8.
, is transmitted to the wireless line 4 via the duplexer 13 and the antenna 14 (step 20B). In addition, the incoming call signal is
Each radio telephone 5a is individually set with an evening slot, and for example, when there are two sets of radio telephones 5a, two types of incoming call signals Sa are generated corresponding to each set.

sb exists. In addition, as shown in Fig. 4, the incoming call signal includes a bit synchronization section for bit synchronization, a frame synchronization section for frame synchronization, an information code section containing control code information, and group code information. The frame consists of a group code section containing information about the individual code, and an individual code section containing information about the individual code.

When such an incoming call signal is sent to the radio line 4, the radio telephone 5a... detects this by the electric field signal detection circuit 26 during reception in the above-mentioned intermittent reception (step 207), FIG. As shown in c) to (e), the receiving state of the receiver 21 is extended to step 20g), and the group code, etc. contained in the incoming call signal is read. In this case, the time t2 during which the receiver 21 should extend the reception state is as follows:
The time may be twice the incoming call signal time T. This is because, since the group code is common among these wireless telephones 5a, it is sufficient to read the information regarding the group code contained in any of the incoming call signals.

When the group code thus read matches the group code set for itself (step 209), the wireless telephone 5a... further increases the reception time as shown in FIGS. 3(C) and (d). Extend (Step 21
0). The extension time t3 is the time obtained by subtracting the incoming call signal time T from the time obtained by multiplying the incoming call signal time T by the type of incoming call signal, that is, the number of sets of wireless telephones 5a, . . . . this is,
The wireless telephones 5a... receive the incoming call signal time T by this extension of the reception time and the extension of the reception time in step 208.
is received by the type of incoming call signal, that is, the number of sets of radio telephones 5a... plus the incoming call signal time T, and now all types of signals sent from the connection device 3 are received. This is because an incoming call signal can be received.

Also, if the group codes do not match, see Figure 3 (
As shown in e), there is no need to extend the reception in this way. This is because if the group codes do not match, it becomes clear that the call is not to oneself, and there is no need to read the individual code included in the incoming call signal. In this way, the wireless telephone 5a...
Once a decision is made based on the group code obtained by receiving data for twice the time, and if it is determined from this group code that the call is not for the user, intermittent reception can be performed from then on, which can reduce power consumption. The life of the battery 27 becomes longer.

Thereafter, the radio telephones 5a... determine whether or not the individual code set for themselves is included from the individual code of the incoming call signal read by extending the reception time (step 211). That is, if the individual code set for itself is included, it is determined that there is an incoming call to itself, and an incoming call response signal is sent from the control circuit 18 to the wireless line 4 via the transmitter 20 and antenna 25. Step 212)
, After this, the process moves to switching to the call channel, etc. (
Step 213).

On the other hand, when the connection device 3 detects an incoming call response signal by the electric field signal detection circuit 15 after transmitting the incoming call signal (step 214), it confirms that the incoming call signal has been received at the wireless telephone 5a... side. After that, the process moves to the switching operation to the communication channel, etc. (step 215). In addition, the connection device 3
If the system does not detect an incoming call response signal after sending out an incoming call signal, it repeats sending out an incoming call signal a predetermined number of times (step 2).
1B).

[Effects of the Invention] As explained above, according to the connection control method in the radio telephone device of the present invention, the radio telephone does not perform unnecessary reception during connection control, and the overall reception time is shortened.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of a radio telephone device according to an embodiment of the present invention, FIG. 2 is a flowchart showing a connection control operation in this radio telephone device, and FIG. 3 is a connection control operation in this radio telephone device. FIG. 4 is a diagram showing the frame structure of an incoming call signal in this radio telephone device, and FIG. 5 is a time chart showing the connection control operation in the conventional radio telephone device. 2......Wired telephone line 3......Connection device 4......Wireless line 58% 5b......Wireless Telephone Applicant Nippon Telegraph and Telephone Corporation Applicant
NEC Corporation Applicant Toshiba Corporation Patent Attorney Satoshi Suyama - Figure 4

Claims (1)

[Claims] (1) Consisting of a connection device connected to a wired telephone line, and a plurality of sets of wireless telephones connected to this connection device via wireless lines consisting of a control channel and a plurality of communication channels, The telephone is a wireless telephone device that performs intermittent reception on the control channel, and when the connecting device detects an incoming call, it transmits a predetermined group code set for each connecting device to the control channel, and then sends a predetermined group code set for each connecting device to the control channel. Out of the individual codes set in , the individual code of the radio telephone related to the incoming call is sent to the control channel, and the radio telephone detects an incoming call signal consisting of at least the group code and the individual code during intermittent reception. Then, the receiving time is extended at least until the group code can be received, and when the received group code is for a connected device of the own group, the receiving time is extended again until at least all the individual codes can be received. Connection control method for wireless telephone equipment.