JPH08275242A - Method and device for connecting personal radio channel - Google Patents

Abstract

PURPOSE: To allow a radio equipment to selectively connect a mobile equipment to plural wired channels with different channel system. CONSTITUTION: Each control signal with a radio frequency f1 (f2, f3) corresponding to plural wired channels with different channel systems is inserted in a time slot not overlapped with but close to a transmission time slot T1 of a specific channel at a prescribed frame interval and the resulting channel is outputted as a radio channel. When a prescribed signal is received from a reception time slot in pairs with the transmission time slot with the control signal inserted thereto, other channel is connected to a wired channel corresponding to the reception frequency, radio frequency information and position information of the transmission reception time slot of the channel are outputted as a radio signal while being included in the control signal of the same frequency as the radio frequency when the prescribed signal is received.

Description

Detailed Description of the Invention

[0001]

The present invention relates to a PHS (personal
Handyphone system) personal wireless line connection method and device.

[0002]

2. Description of the Related Art A PHS (Personal Handy Phone System) has been proposed as a system that can be used as a cordless telephone handset in each home and can be used outdoors like a mobile telephone.

In this PHS, the TDMA-TDD system (time-division multiplex-time-division bidirectional transmission / reception access system) is adopted to connect a mobile unit and a wired line.

In the TDMA-TDD access system in PHS, as shown in (a) of FIG. 6, one frame is composed of four transmission time slots T1 to T4 and four reception time slots R1 to R4. And a set of time slots (T
1, R1), (T2, R2), (T3, R3), (T
4 and R4), different radio frequencies are assigned to each of them to form a 4-channel radio line.

Then, the line connection device of the PHS connects a specific channel, for example, a channel using a transmission / reception time slot (T1, R1) among the four channels of the wireless line, to connect the wireless line to the mobile device. It is used as a control channel, and a specific radio frequency is assigned to this channel according to the wired line system.

The three channels other than the control channel are used as communication channels for transmitting information (dial information etc.) necessary for making a call to a wired line, a call signal and the like. Any of a plurality of radio frequencies predetermined for communication is selectively used for this communication channel.

A PHS line connection device adopting such a TDMA-TDD system inserts a control signal into a transmission time slot of a control channel at a predetermined frame interval and outputs it wirelessly. The mobile device within the service area of the line connection device receives this control signal and synchronizes the transmission / reception timing of the mobile device itself in the state in which the transmission / reception is reversed with respect to the time slot of the line connection device, and the line is always connected. The control signal from the connection device can be received, and the radio signal can be output at the reception timing of the control channel of the line connection device.

When the mobile device is operated off-hook, for example, the mobile device transmits a predetermined signal corresponding to the off-hook operation in synchronization with the reception time slot for controlling the line connection device. Upon receiving this predetermined signal, the line connecting device receives one set of transmission / reception time slots (eg, T3, R3) not used by the local station among the transmission / reception time slots of the communication channel and the radio frequency for communication. Select one of the radio frequencies not used by the local station and adjacent stations, set the radio frequency at the selected transmission / reception time slot to the selected radio frequency, and set the selected transmission / reception time slot The position information and the radio frequency information within one frame are included in the control signal and transmitted as information for the mobile device that has transmitted the predetermined signal.

The mobile device receiving this control signal adjusts its transmission / reception timing to the transmission / reception time slot corresponding to the received position information, and its transmission / reception frequency to the received radio frequency information.

As a result, the mobile device and the line connection device are wirelessly connected on one communication channel, and the line connection device connects this communication channel to the wired line so that the mobile device and the wired line are connected. Enables the exchange of dial information and call signals. The slot configuration and frame period of the wireless signal transmitted and received between the mobile device and the line connection device are the same as those of the line connection device connected to the digital public line, but the main unit to the general subscriber analog line for home use. Even in the case of the line connection device connected as, it is almost the same except that the radio frequency band used is different.

Therefore, the mobile equipment used in the PHS is constructed so as to be able to transmit and receive radio frequency bands of analog lines and digital lines.

By the way, in such a PHS, it is premised that a cordless telephone with a small electric power and a radio wave reachable distance of about 100 m can be used outdoors as a mobile device. Therefore, as shown in FIG. In order to provide a wide service area to the mobile device 1, a dedicated line connection device 3 is installed on each analog line 2a of the line system 2 for subscribers, and a call is used from within the service area 3a. It is necessary to install a large number of dedicated line connection devices 5 for each digital public line 4a of the public line system 4. Furthermore, it is assumed that dedicated digital line connection devices 7 are also provided to the respective digital public lines 6a of the public line system 6 by other companies.

However, a line connection device such as a digital public line is preferentially installed in a place where its utilization rate is expected to increase similarly to a normal public telephone, for example, near a store such as a convenience store or in front of a station. In such a place, as shown in FIG. 7, in such a place, the line connection devices connected to the different wire lines of the line system are connected to each other in their service areas 3a, 5a.
It is expected that they will be installed so that a and 7a are largely overlapped.

[0014]

However, arranging a plurality of line connection devices of different line systems so that their service areas overlap in this way increases the installation cost of the entire PHS system.
In addition, the provider of the installation location also causes a great deal of trouble.

Further, when a plurality of line connection devices having different line systems are installed so that their service areas overlap, the line connection devices transmit radio waves of a plurality of waves in the TDMA-TDD system in the overlapping area. The signals are output asynchronously, and the mobile device 1 in this area is always in a state of being synchronized with only one of the line connection devices.

For example, in the areas where the service areas 3a and 5a of the line connection devices 3 and 5 overlap, the phase of the frame of the line connection device 3 and the phase of the frame of the line connection device 5 are as shown in FIG. When there is a deviation as shown in (a) and (b), one line connection device 5
When the mobile unit 1 that receives the control signal wirelessly output from the mobile station 1 synchronizes with the frame of the line connection device 5, the mobile unit 1 controls the frame of the line connection device 5. On the slot, the control signal output from the other line connection device 3 cannot be received at the correct timing.

Therefore, the mobile unit 1 can receive a call from the digital public line 4a connected to the line connection device 5 on one side, but the analog line connected to the line connection device 3 on the other side. The call from the 2a side cannot be answered at all.

Therefore, it is conceivable to simultaneously output the TDMA-TDD system radio signals whose frames are synchronized from each radio device of each line system. In this case, the timing signal common to the line connection devices of each line system is used. Etc. is required, and it is not preferable in terms of effective use of radio waves.

The present invention has been made to solve such a problem, and in a PHS adopting the TDMA-TDD system, a transmission / reception time slot for controlling one wired line has a plurality of frames or a plurality of frames. Focusing on the fact that the above intervals are specified, the slots other than the time slot used for the control signal for one wired line are used as the time slot for inserting the control signal for another wired line. It is therefore an object of the present invention to solve the above problems and provide a personal wireless line connection method and device with a simple configuration that can selectively connect a mobile device in an area to a plurality of wired lines.

[0020]

In order to achieve the above-mentioned object, the personal wireless line connection method of the present invention comprises a plurality of transmission time slots and a plurality of reception time slots each forming a pair with each transmission time slot. One frame is arranged in a predetermined order in time series, and a TDMA-that forms a wireless channel of a plurality of channels having different wireless frequencies in each set of transmission / reception time slots that are continuous in one frame period.
A TDD wireless device is used to exchange wireless signals with a mobile device on a transmission / reception time slot of a specific channel of the multiple-channel wireless lines, and then move to one of a plurality of wired lines with different line systems. A method for connecting a personal wireless line to another device on another channel, in which a control signal of a radio frequency corresponding to one wired line is intermittently inserted at a plurality of frame intervals into a transmission time slot of the specific channel. Wirelessly outputting, and wirelessly outputting a control signal of a radio frequency corresponding to at least one other wire line by intermittently inserting the control signal of the radio frequency in the empty transmission time slot of the specific channel at a plurality of frame intervals. When a predetermined signal from a receiver is received on the reception slot of the specific channel, a wired line corresponding to the radio frequency of the reception slot , Selecting and connecting one of the other channels, and the control signal of the same frequency as the radio frequency when the predetermined signal is received, the time slot position information of the selected channel and its radio frequency information. And a step of outputting wirelessly.

[0021]

As described above, according to the personal wireless line connection method of the present invention, the control signals of the radio frequency corresponding to a plurality of wired lines of different line systems do not overlap among the transmission time slots of the specific channel. It is inserted into the time slot at a predetermined frame interval and wirelessly output,
When a predetermined signal is received on a reception time slot that is paired with the transmission time slot in which this control signal is inserted, another channel is connected to the wired line corresponding to the reception frequency and the transmission / reception time of this channel is connected. The position information of the slot and the radio frequency information thereof are wirelessly output by being included in a control signal having the same frequency as the radio frequency at the time of receiving the predetermined signal.

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a personal wireless line connection device (hereinafter referred to as a line connection device) 20 _{1 to} 20 ₃ to which the present invention is applied.
The whole system of PHS using is shown. As shown in this figure, each of the line connection devices 20 _{1 to} 20 ₃ is connected to a plurality of wired lines having different line systems, that is, an analog line 2a for subscribers and digital public lines 4a and 6a, and its service area. The mobile device 1 in 20a can be connected to any of the wired lines.

FIG. 2 is a block diagram showing the configuration of the line connection device 20 ₁ connected to three wire lines having different line systems. The line connection device 20 ₁ has two antennas 21 and 22 so that diversity communication can be performed with the mobile device 1, and the two antennas 21 and 22 are provided.
Via the antenna switch 23 to the transmitters 24 and 2
Connected to one receiver 25, 26.

The antenna switch 23 connects the one antenna 21 to the receiver 25 and the other antenna 22 to the receiver 26 by the control unit 40, which will be described later, when the line connection device 20 ₁ is in the receiving state. While the line connection device 20 is in the transmitting state, the two antennas 21, 2
One of the two is controlled to be connected to the transmitter 24.

The transmitter 24 and the two receivers 25, 26 are
Upon receiving a local oscillator signal from the common local oscillator 27, it transmits or receives a radio frequency signal corresponding to the local oscillator signal. The local oscillator 27 is composed of a frequency synthesizer whose frequency can be varied for each time slot described above, and changes its output frequency according to frequency information from the control unit 40 described later. This local oscillator 27
Receives the information of the frequency of the local oscillator signal itself and outputs the local oscillator signal of that frequency, the transmitter 24, the receiver 2
Some of the devices 5 and 26 receive information on a radio frequency to be actually transmitted / received by radio and output a local oscillation signal having a frequency corresponding to this radio frequency, but the latter is used here.

The two receivers 25 and 26 output signals corresponding to the strengths of the signals received by the respective antennas 21 and 22 to the electric field strength comparison circuit 28. The electric field strength comparison circuit 28 compares the strengths of the signals received by the two receivers 25 and 26.

On the other hand, the signals received by the receivers 25 and 26 are output to the modulator / demodulator 29 and demodulated respectively.
This demodulation is π defined as a PHS modulation method.
This is to demodulate a signal modulated by the / 4 phase shift QPSK method.

This demodulation output is input to the demodulation signal selection circuit 30, and either one of them is selectively output based on the comparison result of the electric field strength comparison circuit 28.

Further, the modulator / demodulator 29 inputs the signal modulated by the π / 4 phase shift QPSK method by the multiplexed signal output from the multiplexing circuit 32 described later to the transmitter 24, and the π / 4 phase A wireless signal modulated by the shift QPSK method is output. The timing generation circuit 31 outputs a signal that serves as a reference for timing of each time slot and frame of the above-mentioned four-channel TDMA-TDD system.

The multiplexing circuit 32 is the timing generation circuit 3
1 performs multiplexing and disassembling of each channel of the TDMA-TDD system in synchronization with the signal output from No. 1 and has four channel input / output ports 32a to 32d. As shown in (d), digital signals D _T1 , D _T2 input to each port during one frame time Tf,
D and _T3, D _T4, in Figure 3 the 1 compresses the port order to signal the 1/8 of the time (time slot) of the frame, the signal of the four channels that the compression process as in (e) T1 After being inserted into each transmission time slot from T4 to T4 and output to the modulator / demodulator 29, as shown in FIG. 3 (f), from the demodulation signal selection circuit 30 in a time unit (time slot time) of 1/8 of one frame. As shown in (g) to (j) of FIG. 3, the output demodulated signals of four channels on each reception time slot of R1 to R4 are expanded to 8 times the time by the procedure reverse to the compression processing. The processed digital signal is processed by adding D _R1 , D _R2 , D _R3 and D _R4 to each port 32a ...
Output to 32d.

The port 32a corresponding to the transmission / reception time slot (T1, R1) of the multiplexing circuit 32 is connected to the control unit 40 described later as shown in FIG. 2, and the other three ports 32b to 32d are It is connected to the line connection switch 33.

The line connection switch 33 includes a multiplexing circuit 32.
The ports 32b to 32d and the analog line interface 35 and the respective B channels (information channels) of the two line terminators 36 and 37 are selectively connected.

The analog line interface 35 converts a signal input to the subscriber analog line 2a into a digital signal and outputs the digital signal to the line connection switch 33 side, and an analog digital signal input from the line connection switch 33 side. It is converted into a signal and output to the analog line 2a. The analog line interface 35 detects a line state such as an incoming call to the analog line 2a and outputs it to the control unit 40 described later.

On the other hand, the two line terminators 36 and 37 are
Digital public lines (I
SDN line) 4a, 6a, and two Bs for each line
Disassemble and assemble the channel (information channel) and D channel (control channel). This D channel is connected to the control unit 40.

As shown in FIG. 4, the frequency memory 39 stores radio frequency data f1 and f2 of control signals for the digital public lines 4a and 6a, radio frequency data f3 of control signals for the analog public line 2a, and digital public line. 4a,
The communication radio frequencies fa _{1 to} fa _m for 6a and the communication radio frequencies fb _{1 to} fb _n for the analog line 2a are stored.

The control unit 40 is composed of a microcomputer and controls the entire line connecting device.

The control unit 40 includes the line connection device 20 ₁
In addition to means (not shown) for controlling transmission / reception switching, controlling calling and calling to each wire line, control signal inserting means 41, wire line connecting means 42, wireless line connecting means 43 and idle frequency detecting means. 44 are provided.

The control signal inserting means 41 is arranged in the multiplexing circuit 32 in one frame so that the control signal of the radio frequency corresponding to each wire line is inserted into the different transmission time slots T1 at a plurality of frame intervals. The control information for each wired line is output to the port 32a in synchronization with the timing of inserting a signal into the transmission time slot T1, and the control information is compressed and output from the multiplexing circuit 32 to the modulator / demodulator 29. Controlling radio frequencies (f1, f2, for the wired line corresponding to the control information)
The data of either f3) is set in the local oscillator 27, and the control signal of the radio frequency corresponding to each wired line is intermittently output.

In the PHS, the digital public line 4
Output intervals of control signals for a and 6b are 20 frame intervals (100 mS intervals assuming 1 frame time Tf is 5 mS).
Further, the output interval of the control signal for the analog line 2a is defined as an interval of 25 frames or more (125 mS). Therefore, this control signal inserting means 41
As shown in (a) to (c) of FIG. 5, the control signals of the radio frequencies f1 and f2 corresponding to the digital public lines 4a and 6a are output at 20-frame intervals with a shift of one frame, and the analog lines are output. The control signal of the radio frequency f3 corresponding to 2a is transmitted to the digital public line 4 in 25 frames or more.
4 which is the least common multiple of the output intervals of the control signals for a and 6a
It is inserted in the transmission time slot T1 of the next frame in which the control signal of the radio frequency f2 is inserted at 0 frame intervals.

[0040] That is, the control signal of the radio frequency f1 for the digital public line 4a is inserted in the transmission time slot T1 of the first frame Fr _1, the next frame Fr ₂
Of the digital public line 6 in the transmission time slot T1 of
control signal in the radio frequency f2 for a is inserted, further transmission time slot T1 of the next frame Fr ₃ is
The control signal of the radio frequency f3 for the analog line 2a is inserted, and thereafter, the control signals for the digital public lines 4a and 6a are inserted at an interval of 20 frames respectively, and the control signal of the analog line 2a is inserted at an interval of 40 frames. Will be done.

The wired line connection means 42 receives the predetermined signal from the mobile device 1 by the receivers 25 and 26 on the reception time slot R1 of the frame in which the control signal is inserted by the control signal insertion means 41, and demodulates and outputs the signal. Is output from the port 32a of the multiplexing circuit 32, the wired line corresponding to the radio frequency of the reception time slot R1 is selected, and the three ports 32b to 32 of the multiplexing circuit 32 are selected.
One of the unused ports is selected from d, and further, of the radio frequencies for communication detected by the idle frequency detecting means 44 described later, the one for communication assigned to the selected wired line is selected. Select one of the radio frequencies. Then, the line connection switch 33 is controlled so that the selected wired line and the selected port are connected,
Frequency data is set in the local oscillator 27 so that the radio frequency of the transmission / reception time slot into which the signal of this port is inserted becomes the selected radio frequency.

The wireless line connecting means 43 sends the position information and the radio frequency information of the transmission / reception time slot selected by the wired line connecting means 42 to the control information inserting means 41, and when this information receives a predetermined signal. It is included in the control signal having the same radio frequency as that of the above and is output from the transmitter 24.

The vacant frequency detecting means 44 utilizes the reception time slots that are not used for control and communication in each frame and uses the communication radio frequencies fa _{1 to} fa _m , fb of the frequency memory 39. _{From 1 to} fb _n , select a radio frequency other than the frequency already used as the radio frequency for communication, set it sequentially to the radio frequency of the empty reception time slot, and select it according to the reception output. Whether or not the selected radio frequency is used by an adjacent station or the like is checked to constantly detect the radio frequency that can be used in the service area of the own station.

The line connection device 20 ₂ connected to the analog line 2a and the digital public line 4a is not provided with the line terminating device 37, and the control signal for each wire line is shown in FIG. It is configured similarly to the line connection device 20 ₁ except that it is sent at the timings a) and (c) or at the timings (b) and (c). Further, the line connection device 20 ₃ connected to the two digital public lines 4a and 6a is not provided with the analog line interface 35, and the control signal of each line is shown in FIG.
The line connection device 20 ₁ has the same configuration as that of the line connection device 20 ₁ except that it is transmitted at the timings of (b).

Next, the operation of the line connection device 20 ₁ will be described. 20 within the service area of the line connection device 20 _1.
The mobile station 1 in a sweeps its reception frequency within a range in which it can receive a control signal corresponding to each wired line, and transmits it at a plurality of frame intervals in the transmission time slot T1 for control of this line connection device 20 _1. The control signal that is inserted and wirelessly output is received, the transmission / reception timing of the mobile device 1 itself is adjusted to the transmission / reception time slot for control of the line connection device 20 ₁ , and the transmission / reception frequency corresponds to the frequency of each control signal. Then, all the control signals wirelessly output by the line connection device 20 ₁ are intermittently received.

Since the control signals output from the line connection device 20 ₁ are all inserted in the transmission time slot (T1 in this example) at the specific position of one frame, the mobile device 1 transmits each control signal. It can be reliably received.

Here, for example, when a call signal is input to the analog line 2a, the control unit 40 of the line connection device 20 ₁ confirms that there is a vacant transmission / reception time slot, and then Information for calling a specific mobile unit 1'as a slave unit of the analog line 2a is included in the control signal of the frequency f3 and wirelessly output.

Of the mobile stations receiving this control signal, the specific mobile station 1'recognizes a call to itself and sends a predetermined signal corresponding to the call to the transmission time when the control signal of frequency f3 is inserted. Radio output is performed at a timing matched with the reception time slot R1 that forms a pair with the slot T1.

The line connection device 20 ₁ , which has received this predetermined signal in the reception time slot R1 of the frequency f3, receives _one of the vacant communication transmission / reception time slots, for example (T
3, R3) is selected, and the port 32c of the multiplexing circuit 32 corresponding to the transmission / reception time slot is connected to the analog line 2a which is a wired line corresponding to the radio frequency f3 so that the line connection switch 33 is connected. To control. Then, of the communication frequencies for analog lines, one of the frequencies not used by the local station and the adjacent station, for example, the frequency f
Select b ₄ to select this transmit / receive time slot (T3, R
The frequency data fb ₄ is output to the local oscillator 27 so that the transmission / reception frequency of the transmitter 24 and the receivers 25 and 26 in 3) becomes the selected frequency.

Further, the line connection device 20 ₁ uses the position information of the transmission / reception time slot (T3, R3) and the radio frequency information fb ₄ as the control signal of the frequency f3 as the information for the mobile station 1'which issued the predetermined signal. And output wirelessly.

A specific mobile unit 1'which has received this control signal
Adjusts its transmission / reception timing to the transmission / reception time slot (T3, R3) of the line connection device 20 ₁ and sets its radio frequency to the frequency fb ₄ .

As a result, the specific mobile device 1'is connected to the line connection device 20 by the communication radio line formed by the transmission / reception time slot (T3, R3) and the radio frequency fb _4.
Connected _1, the time slots, line connector 2
Since it is connected to the analog line 2a at 0 ₁ ,
This specific mobile device 1'is capable of talking in response to a call from the analog line 2a.

When a call is made from the digital public line 4a or 6a, the same operation as described above is performed,
The mobile unit is connected to the digital public line that has called, but in this case, location registration processing is required for each digital public line system in advance.

That is, the mobile unit 1 transmits its own identification information (telephone number) to the control signal for the digital public line. The line connection device 20 _{1, which} has received this identification information,
Using the D channel (control channel) of each digital public line 4a, 6a, the code of the own station and the received identification information are transmitted to each line system, and the position registration of the mobile device 1 is performed in each line system. .

By performing such a location registration process, each line system can know which line connection device the service area of the mobile device to be called is in the service area, and can efficiently call the mobile device.

As described above, the line connection device 20 of the embodiment
_{If 1} is used, a mobile device in the area can be called from any wired line without providing a plurality of line connection devices corresponding to each wired line in the same area.

On the other hand, when the mobile station 1 in the service area 20a makes a call, the mobile station 1 selects a line to be connected and performs off-hook operation.

That is, since the specific mobile unit 1'can be connected to the analog line 2a as a slave unit, in addition to this analog line 2a, two digital public lines 4a and 6a are provided.
Can be arbitrarily selected. The radio frequency of the predetermined signal corresponding to the off-hook operation and the transmission timing of the predetermined signal differ depending on the selection operation.

That is, when the analog line 2a is selected and the off-hook operation is performed, the predetermined signal of the frequency f3 is set in accordance with the reception time slot paired with the transmission time slot in which the control signal of the radio frequency f3 is inserted. When the digital public line 4a is wirelessly output and the digital public line 4a is selected, a predetermined signal of the frequency f1 is output in accordance with the reception time slot that is paired with the transmission time slot in which the control signal of the radio frequency f1 is inserted. When the digital public line 6a is selected, the predetermined signal of the frequency f2 is output in accordance with the reception time slot paired with the transmission time slot in which the control signal of the radio frequency f2 is inserted.

Further, the other mobile station 1 in the service area 20a can call a specific party through either of the two digital public lines 4a and 6a connected to the line connection device 20 _1. You can

When the line connection device 20 ₁ receives the predetermined signal from the mobile device 1 at the radio frequency f2, for example, selects the digital public line 6a corresponding to the reception frequency of the predetermined signal, and the wired line is not in use. Contains one of the available transmission / reception time slots for communication, for example (T4,
R4) is selected, and the line connection switch 33 is connected so that the port 32d of the multiplexing circuit 32 corresponding to the transmission / reception time slot and the digital public line 6a are connected.
Control. Then, of the communication frequencies for the digital public line, one of the frequencies not used by the local station and the adjacent station, for example, the frequency fa ₂ is selected, and the transmitter 24 and the receiver in this transmission / reception time slot (T4, R4) are selected. The frequency data fa ₂ is output to the local oscillator 27 so that the transmission / reception frequencies of 25 and 26 become the selected frequencies.

Further, the line connection device 20 includes the position information of the transmission / reception time slot (T4, R4) and the radio frequency information fa ₂ in the control signal of the frequency f2 as the information for the mobile device 1 which issued the predetermined signal. Output wirelessly.

Upon receipt of this control signal, the mobile unit 1 adjusts its transmission / reception timing to the transmission / reception time slot (T4, R4) of the line connection device 20 and sets its radio frequency to the frequency fa ₂ .

As a result, the mobile device 1 is connected to the line connection device 20 by the communication wireless line formed by the transmission / reception time slots (T4, R4) and the radio frequency fa ₂ , and this time slot is connected to the line connection device. Since it is connected to the digital public line 6a at 20, the information of the dial operation of the mobile unit 1 is the digital public line 6a.
When it is sent to the D channel of a and the other party responds, one B channel of the digital public line 6a connects on the transmission / reception time slot (T4, R4), and between the mobile station 1 and the other party's terminal, You can make a call.

The operations of the other line connecting devices 20 ₂ and 20 ₃ are the same as the line connecting device 20 ₁ except that the number of connected lines is small.

Further, each line connection device 20 ₁ , 20 ₂ , 2
Each mobile device 1 in the service area of 0 ₃ is in the intermittent reception mode in which only the control signal is intermittently received during non-call as shown in FIG. However, as described above, the control signal for each wired line is inserted in the adjacent frames. Therefore, the mobile device 1 only needs to intensively receive for a time period including a maximum three-frame time and a margin time before and after that, and an increase in battery consumption due to an increase in control signals to be received is small. can do.

[0067]

As described above, according to the personal wireless line connecting method and apparatus of the present invention, the analog line and the digital public line for home use, or a plurality of digital public lines between different operators are simple in structure. Lines, etc.
A mobile device can be selectively connected to a plurality of wired lines having different line systems, and a line connecting device without waste can be installed and used.

Further, each control signal having a different frequency corresponding to each wired line is always inserted into a transmission time slot at a predetermined position in one frame and wirelessly output. Mobile stations in the area can be surely synchronized with the frame of the line connection device and can receive and respond to any of the control signals at the correct timing. Therefore, the mobile device can reliably receive a call from any wired line.

Further, in the line connection device in which the control signal for each wired line is inserted in the transmission time slots of the frames which are close to each other, it is possible to reduce the increase in the battery consumption of the mobile device adopting the intermittent reception system. it can.

[Brief description of drawings]

FIG. 1 is a PH using a line connection device according to an embodiment of the present invention.
Overall view of S system

FIG. 2 is a block diagram showing the configuration of an embodiment.

FIG. 3 is a timing chart for explaining an operation of a main part of one embodiment.

FIG. 4 is a memory diagram of a main part of one embodiment.

FIG. 5 is a timing chart showing the operation of the main part of the embodiment.

FIG. 6 is a timing diagram of the TDMA-TDD system.

FIG. 7: Overall view of PHS system

[Explanation of symbols]

1, 1'Mobile unit 2, 4, 6 Line system 2a Analog line 4a, 6a Digital public line 20 ₁ , 20 ₂ , 20 ₃ Line connection device 21, 22 Antenna 24 Transmitter 25, 26 Receiver 29 Modulator / demodulator 31 Timing Circuit 32 Multiplexing circuit 33 Line connection switch 39 Frequency memory 40 Control unit 41 Control signal insertion means 42 Wired line connection means 43 Wireless line connection means

Claims (5)

[Claims] 1. A frame is constructed by arranging a plurality of transmission time slots and a plurality of reception time slots forming a set with each transmission time slot in a predetermined order in time series,
Using a TDMA-TDD system wireless device that forms wireless channels of a plurality of channels having different radio frequencies in each set of transmitting and receiving time slots that are continuous in one frame period, the transmitting and receiving time of a specific channel of the plurality of channel wireless lines is used. A personal wireless line connection method for connecting a wireless signal to and from a mobile device on a slot and then connecting the mobile device to any one of a plurality of wired lines having different line systems on another channel. Radio frequency control signal corresponding to one wired line is intermittently inserted into the transmission time slot of the specific channel at a plurality of frame intervals and wirelessly output, and radio frequency control corresponding to at least one other wired line A signal is intermittently inserted into an empty transmission time slot of the specific channel at intervals of a plurality of frames and wirelessly output. And, when a predetermined signal from the mobile device is received on the reception slot of the specific channel, selecting one of the other channels and connecting it to a wired line corresponding to the radio frequency of the reception slot. A step of wirelessly outputting the time slot position information of the selected channel and its radio frequency information by including the radio frequency information in a control signal having the same frequency as the radio frequency when the predetermined signal is received. Personal wireless line connection method. 2. A receiver for receiving a radio signal and a plurality of input / output ports, wherein signals input to the respective ports are multiplexed in a predetermined order and inserted into a plurality of transmission time slots for output. A multiplexing circuit for decomposing a signal received by the receiver on a plurality of reception time slots forming a pair with the plurality of transmission time slots for each reception slot and outputting the decomposed signal from each port; A transmitter for outputting a radio signal modulated by the signal multiplexed by the multiplexing circuit, wherein one frame is composed of the plurality of transmission time slots and reception time slots, and each frame is continuous in one frame period. Wireless channels of a plurality of channels having different radio frequencies are formed in each set of transmission / reception time slots, and a TDMA-TDD system par is used for connecting between a mobile device and a wired line via the wireless channels. A wireless wireless connection device, which is connected to one port of the multiplexing circuit and supports a radio frequency control signal corresponding to one wire line of a plurality of wire lines having different line systems to the one port. The control signal of the radio frequency corresponding to at least one other wired line is intermittently inserted into the transmission time slot of the specified channel at a plurality of frame intervals, and the control signal of the radio frequency corresponding to at least one other wired line is intermittently inserted into the idle transmission time slot of the specific channel at a plurality of frame intervals. Control signal inserting means for wirelessly outputting each of the control signals from the transmitter, and when the receiver receives a predetermined signal from the mobile device on the reception slot of the specific channel, the reception slot Corresponding to a wired line corresponding to the radio frequency of 1 and one channel selected from the channels other than the specific channel. The wired line connection means for connecting between the ports of the multiplexing circuit, the time slot position information of the selected channel and the radio frequency information thereof are controlled at the same radio frequency as when the predetermined signal is received. A personal wireless line connection device, comprising: a wireless line connection means for outputting the signal wirelessly from the transmitter. 3. The control signal inserting means is configured to insert a control signal of a radio frequency corresponding to each of the wired lines into a transmission time slot adjacent to the specific channel. Item 2. A personal wireless line connection device according to item 2. 4. The personal wireless line connection device according to claim 2, wherein the plurality of wired lines include a subscriber analog line and a digital public line. 5. The personal wireless line connection device according to claim 2, wherein the plurality of wired lines include a plurality of digital public lines having different line systems.