JPH0362739A - Pulse signal transmitter - Google Patents

Abstract

PURPOSE:To reduce the capacity of a battery and to attain light weight and to make the size small by activating the transmitter to use a small and constant DC output from the battery at all times, storing the output into a capacitor and discharging the charge tentatively for driving a transmission output circuit when a signal is sent. CONSTITUTION:A DC output of a battery E is fed to a switch 195 via a current control circuit 191. The switch connects to a capacitor C whose capacitance is C, which charges up a DC power normally. When the transmission using a radio channel and a time slot is desired, a control section sends timing information turning the switch 195 on to a transmission reception interruption controller 123 to discharge the electric charge stored in the capacitor C via the current control circuit 192. A transmission signal from a speed conversion circuit is fed to a radio transmission circuit and a required radio signal is sent from an antenna. When a time required for signal transmission in one time slot elapses, the supply of DC power to the power amplifier section 149 is stopped.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a transmitting device that intermittently transmits radio signals in the form of pulse signals in mobile communications.

More specifically, a capacitor is charged with DC power obtained from a relatively small-capacity battery built into a mobile radio device that is required to be small and lightweight, and this is intermittently applied to a radio signal transmission circuit. The present invention relates to a pulse communication transmitter.

[Prior art] In conventional mobile communications, for example, N
Radio signals, both from radio base stations as well as from mobile radios, are transmitted continuously, such as in 0.01 second pulses with a period of 0.1 seconds, such as in TT car phone communications. It was never sent intermittently.

Therefore, the DC power obtained from the battery is required to be sufficient to obtain the required wireless output that is constantly transmitted as a wireless signal. In addition, even in data communications, where the mobile radio only needs to respond with a simple yes or no response to commands from a radio base station, the transmitted signal has a duration of about 0.01 to 0.5 seconds. Radio waves were constantly being sent out, even though pulse-like signals were sufficient.

[Problems to be Solved by the Invention] If the DC power obtained from the battery built into a mobile radio device, which is required to be small and lightweight, is directly used as a power source for a transmitting circuit, the battery capacity will become large. It no longer meets the requirements of being small and lightweight.

[Means for solving problem 1] Therefore, by making the wireless signal transmission intermittently, the battery is operated so that a small constant DC output is obtained at all times, and this output is stored in a capacitor, and this is used as the transmission output. It is used to drive circuits, and is emitted temporarily when transmitting signals.

[Since we decided to transmit not only the action code data signal but also the analog signal intermittently, the transmission signal may be a pulse-like signal whose duration is only the period for transmitting the necessary signal, and other Elf
The transmission line is suspended, and during this suspension period, there is no need for DC power to be applied to the wireless transmission circuit.During this suspension period, the battery output is charged to the capacitor from the battery, and the transmission circuit is energized when necessary. did. This made it possible to achieve the desired purpose with a battery of smaller capacity than before. Furthermore, by transmitting intermittently, high frequency utilization efficiency can be obtained, making it possible to realize an excellent mobile radio system.

[Example] Figure 1A, Figure 18-1, Figure 18-2, and Figure 1C
The figure shows a system configuration for explaining one embodiment of the present invention. The system shown here uses a so-called small zone configuration, but there are references such as Ito's "Proposal of a mobile phone system - An approach to ultimate communication" IEICE technical report C3B6-88 November 1986, etc. It is assumed that a so-called microcell is used in which the size of each zone is extremely small, within one size, as shown in FIG. In this case, each wireless zone has a large overlap, and one wireless zone is simultaneously serving as another wireless zone.

In FIG. 1A, 10 is a general telephone network, 11 is an exchange on the side of the telephone network 10, and 20 is a gateway exchange for connecting the exchange 11 and a wireless system. The gateway switch 20 controls a plurality of wireless base stations 30 and many mobile wireless devices in order to set up and release wireless lines and perform channel switching in conjunction with zone migration. station 30-1.n of 30-2 to 30-n
When each radio base station 30-1 to 30-n receives a transmission wave from a mobile radio, the communication control unit 21 controls the station, the ID identification unit 24 identifies the identification number of the mobile radio, and , an S/N monitoring unit 25 that monitors communication quality, and a communication system switching unit that is controlled by the communication control unit 21 to establish a connection between each of the wireless base stations 30-1 to 30-n and the exchange 11. A switch group 23 necessary for the above is included.

However, the switch group 23 in Figure 1A is easy to replace.
Only 3 lines are shown for incoming lines from 11, and wireless base #30-
Communication signals 22-1 to 1.22-1 to 1 to 30-n
-2~22'-1-m and 22-2-1.22-2-
2 to 22-2-m to 22-n-1, 22-n-2 to
The outgoing lines for transmitting 22-nm are shown as n.times.m lines.

The wireless base station 30 includes a group of communication path switches that interface with the gateway exchange 20, a communication path control unit that controls the communication path, an ID identification storage unit, a circuit that converts the speed of signals, and allocation of time slots 1 to 1. It includes a selection circuit, a control unit, and a device that transmits and receives multiple wireless channels, and in addition to setting and canceling wireless lines, it also has a wireless transmitting and receiving circuit that transmits and receives wireless signals with many mobile radio devices 100. are doing.

Here, between the barrier switch 20 and the wireless base station 30,
There are transmission lines for transmitting communication signals 22-1 to 22m including communication signals of communication channels C ports 1 to CHm and control signals.

In FIG. 1B-1, the wireless base station 30-1 or 30-
The circuit configuration of a mobile radio device 100 that communicates with the mobile radio device 100 is shown. Received signals such as control signals and call signals received by the antenna section enter a radio receiving circuit 135 including a receiving mixer 136 and a receiving section 137, and the output communication signal is inputted to a speed recovery circuit 138 and a clock regenerator 141. be done.

The clock regenerator 141 regenerates the clock from the received signal and sends it to the speed restoration circuit 138 and the control unit 140.
is applied to the timing generator 142 and the speed conversion circuit 131.

The speed restoration circuit 13B restores the speed (pitch in the case of an analog signal) of one compressed and separated communication signal in one time slot in the received signal of the reception channel to obtain a continuous signal. , it is the telephone part 10
1 and the ID information verification storage section 182.

The communication signal output from the telephone section 101 is divided into predetermined time intervals by the speed conversion circuit 131, and its speed (pitch in the case of an analog signal) is made high (compressed), and then sent to the power amplification section 140. The signal is applied to a radio transmission circuit 132 including a transmission mixer 133 and a transmission section 134, and the transmission signal is sent out from the antenna section using one time slot and received by a plurality of radio bases 830.

The ID information collation storage unit 182 to which the output of the speed restoration circuit 138 is applied stores the ID (identification information) of the mobile radio device 100 and identifies and stores which zone the mobile radio device 100 is in.

In the timing generator 142, the transmission/reception intermittent controller 123. It supplies necessary timing to the speed conversion circuit 131 and speed restoration circuit 138.

This mobile radio 11100 includes a synthesizer 121-1.
and 121-3, and selector switch 1221.122-
2, a signal for switching the changeover switches 122-1 and 122-2, and a power amplification power supply section 170 that supplies power to the power amplification section 149 for amplifying the radio signal included in the radio transmission circuit 132. A transmission/reception intermittent controller 123 and a timing generator 142 are included, and the synthesizers 121-1 and 121-3, the transmission/reception intermittent controller 123, and the timing generator 142 are connected to 140. Each synthesizer 121-1 and 121-3 has
A reference frequency is supplied from a reference crystal oscillator 120. With such a configuration, it is possible to communicate with the wireless base station 30 using one channel.

FIG. 1B-2 shows the internal configuration of the radio receiving circuit 135. The received signal received by the antenna section is sent to switch 1.
The local oscillation frequency from the synthesizer 12]-1 is applied to the receive mixer 136 via the synthesizer 12-1, and the output thereof is applied to the intermediate frequency amplifier 143.

The signal amplified by intermediate frequency amplifier 143 is applied to gate circuit 144 and clock generator 141. This gate circuit 144 is for extracting only the signal of a desired time slot without interference from other time slots. The output of the gate circuit 144 is demodulated by the discriminator 145 and passed through the gate circuit 146 to the speed restoration circuit 1.
38. This gate circuit 146 removes 1 to transient of the demodulated waveform.

FIG. 1B-3 shows a detailed configuration of an embodiment of a power amplification power supply section 170 that supplies power to the power amplification section 149 included in the wireless transmission circuit 132 shown in FIG. 1B-1. There is. On the left in Figure 1B-3 is battery E, which is typically a several volt battery. The output of this battery E also supplies the necessary power to other circuits included in the mobile radio device 100, and below, the power amplifying section 149 included in the radio transmitting circuit 132, which constitutes the main part of the present invention. I will explain in detail.

The DC output of the battery E is supplied to the switch 195 via a current control circuit 191 (which protects the battery E from being damaged or shortened in life due to overcurrent) by keeping the current 1 within a certain value. A capacitor C having a capacitance C is connected to this switch, and is normally in a state of storing DC power. Now, when the mobile radio device 100 wants to transmit using a certain time slot of a certain wireless channel instructed by the gateway exchange 20, the control unit 140 provides timing information for turning on the switch 195 to the transmission/reception intermittent controller 123. will be sent. Then, the switch 195 switches from the a terminal side to the b terminal side at this timing, and the charge stored in the capacitor C is discharged via the current control circuit 192. In this case, the current control circuit 192 is a circuit that limits the discharge current to an appropriate value or less, and has the role of keeping the current (2) applied to the power amplifier 149 constant for a certain period of time, that is, during the transmission period of one time slot. have During this timing period, the transmission signal from the speed conversion circuit 131 is applied to the wireless transmission circuit 132, and at the same time, the switch 122-2 is turned on to transmit the output from the synthesizer 121-3 to the transmission mixer 13.
3, the required radio signal will be transmitted from the antenna.

Next, when the time required for signal transmission within one time slot has elapsed, the transmission/reception intermittent controller 123 turns the switch 195 to the terminal a side and stops supplying DC power to the power increase 1 width portion 1/49. Stop. The transmission of radio signals from the antenna is thus stopped and the transmitted signals of other mobile radios communicating using other time slots are not adversely affected.

Here, regarding the amount of charging and discharging flowing into capacitor C, the first
This will be explained using Figure B-4. Figure (a) shows mobile radio device 1.
The transmission timing from 00 is shown. At this timing, the amount of charge stored in the capacitor C is discharged as a current T2 and is used to operate the power amplification section 149. At other times, the current from the battery is 1
1, and the capacitor C is charged. The duration of this charging and discharging is determined by the system specifications. For example, in the mobile radio device 100 shown in FIG. Q
, 1m5ec, and transmits this as a wireless signal using one time slot, the charging time is 9.92 m5cc, the IIi battery opening time is '1m5ec, and this process is repeated repeatedly. Become. Therefore, even if the battery has a relatively small capacity, it is possible to supply a large pulsed current. Fig. 1B-5 shows the relationship between the charging current and the discharging current to the capacitor C when a commercially available battery (5V) is used as the power source while changing the time compression ratio. The curve indicated by a circle mark and a solid line in FIG.
2 is shown.

FIG. 1B-6 shows a power amplification power supply unit 170 when the output voltage of the battery E is low and the DC voltage required for the power amplification unit 149 is higher than the voltage of the battery E.
Examples are shown. Here, the voltage of the battery E is boosted by the DC-DC conversion circuit 194, and the current 11
is injected into the capacitor C via the switch 195 to charge it, and by switching the switch 195, the current control circuit 192
An output current (2) is supplied from (3) to the power amplification section 149.

A wireless base station 30 is shown in FIG. 1C.

Communication signal 22-1 of m channel with gateway exchange 20
22-m are connected to the signal processing section 31 forming an interface by a transmission path.

Now, the communication signal 22- sent from the barrier switch 20
1 to 22-m are manually input to the signal processing unit 31 of the wireless base station 30. The signal processing unit 3] is equipped with an amplifier to compensate for transmission loss, and also has a function for transmitting and receiving diversity using two or more time slots 1 to 1, and a function to transmit and receive signals to multiple wireless transmitting and receiving units. In addition to the function of dividing the line, if there are two trunk lines with the gateway exchange 20, so-called 2-wire to 4-wire conversion is performed. In other words, the human input signal and the output signal are mixed and separated, and the input signal from the barrier exchange 1120 is sent to many switches 5WR1-1-1, 3.
WR1-1-2,..., SWRll-m, 5WR1-
2-1,5WR1-2-2゜-,SWR1-2-m,-
, ·, SWR1 including SWR1-n4 1 , 3WR1-n-2, -, SWR1-n-m, 5WR2 including also many switches, and 5WT1-1-1, 5WT1-1-2. −, SWT
l-1-m, 5WT1-2-1°3WT1-2-2. −
, SWTl-2-m-,...SWTl-n-1,3W
5WT1 including T1-n-2,-, SWTl-n-m,
Similarly, signal speed conversion circuit group 51-1 including many signal speed conversion circuits 51-1-1 to 51-1-m and signal speed conversion circuit group 51-1 including many signal speed conversion circuits 51-1-1 to 51-1-m are connected via switch group 83 configured to include 5WT2 including many switches. It is sent to the speed conversion circuit group 51-2.

In addition, many signal speed restoration circuits 38-1-1 to 38-1-
The output signals from the signal restoration circuit group 3B-1 and the signal speed restoration circuit group 38-2 including m are transmitted to the signal processing unit 31 via the switch group 83 and converted to the communication signal 22 using the same transmission path as the input signal. -1 to 22-m are transmitted to the barrier switch 20. Here, the switch group 83 includes transmission switches 5WT1° to 5WT2. and reception switch SWR1
, ~5 SWR2, all of which are connected to the communication path control section 81.
Under the control of the switch group 83, the switch group 83 is opened and closed to achieve the desired purpose, and operates to enable transmitting and receiving diversity.

The ID identification storage section 82 is used to identify and store the ID of the mobile radio device 100. Further, the communication path control unit 81
The switch group 83 is opened and closed according to commands from the control unit 40 to control the communication path, and the communication path control unit 81 also has the function of providing information and requesting control to the control unit 40. Among the above, the input signal from the barrier switch 20 passes through the switch group 83, and then passes through many signal speed conversion circuits 51-1-
The signals are input to the signal speed conversion circuit group 511 including signals 1 to 51-1-m and the same <51-2, and undergo speed (pitch) conversion at predetermined time intervals.

In addition, the signals transmitted from the wireless base station 30 to the gateway exchange 20 are outputted from the wireless receiving circuits 35-1 and 352 via the signal selection circuit groups 39-1 and 392, and the signal speed restoration circuit groups 38-1 and 38-2 and the speed (
After the pitch is converted, the signal passes through a switch group 83 and is input to the signal processing section 31.

Now, the control of the radio receiving circuits 35-1 and 35-2 or the output of the communication signal is performed by the signal selection circuit group 39-, which includes signal selection circuits 39-1-1 to 39-1-m that select signals for each time slot. 1 and 39-2, and here, calls are made corresponding to the time slots included in the two radio channels received by each radio receiving circuit 35-1 and 35-2, for example, 0-1 and 0-2. The signals are separated. This output is a signal speed restoration circuit 3 provided corresponding to each call signal.
Signal speed restoration circuit group 3 including 8-1-1 to 38-1-n
After the signal speed (pitch) is restored at 8-1 and 38-2, it is input to the signal processing section 31 via the switch group 83, and after undergoing 4-wire to 2-wire conversion, this output is sent to the barrier switch. 20 as communication signals 22-1 to 22-n.

Here, the specific configuration of each radio receiving circuit 35-1, 35-2 is the same as the radio receiving circuit 135 of the mobile radio device 100 shown in FIG. 1B-2.

7 Next, the functions of the signal speed conversion circuit groups 51-1 and 512 will be explained.

By storing input signals such as audio signals and control signals divided into a certain length of time in a storage circuit, and changing the speed when reading them out, for example, reading them out at a speed 15 times faster than when they were stored, the signal can be read out. It becomes possible to compress the time length. The principle of the signal speed conversion circuit group 51 is the same as when playing back audio recorded by a tape recorder at high speed, and in reality, for example, a CCD (Char
c+eCoupled Device), BAD
(Bucket Brigade Device) can be used, and the memory used in television receivers and tape recorders that compress or expand the time axis of conversations can be used (References: Koita et al.
“A tape recorder that compresses/expands the time axis of conversations”
Nikkei Electronics July 26, 1976 92-
133 pages).

The circuits using CCD and BBD exemplified in signal speed conversion circuit group 51-1 jP3 and 51-2 can be directly applied to signal speed restoration circuit group 38-1 and 38-2 as described in the above-mentioned document 8. In this case, the reading speed is faster than the writing speed by receiving the timing signal from the timing generator 42 which generates timing using the clock from the clock generator 41 and the control signal from the control unit 40. This can be achieved by slowing down the speed.

Control or call signals output from the barrier switch 20 via the signal processing section 31 are sent to the signal speed conversion circuit group 511.
and 51-2, and after being subjected to speed (pitch) conversion processing, it is applied to signal allocation circuit groups 52-1 and 52-2 that allocate signals for each time slot.

The signal allocation circuit groups 52'-1, 52'-2 are buffer memory circuits, and the signal speed conversion circuit groups 51-1, 5
The high-speed signals output from each section 12 are stored in memory, and are stored in a buffer using timing information from the timing generation circuit 42 given in accordance with instructions from the control section 40.
Reads the signal in the memory and transmits the wireless transmission circuit 32-1.3
2-2 respectively. This timing information is arranged in series without overlapping time-series when viewed from the perspective of call signal correspondence, and when all control signals or call signals described later are implemented, it appears as if it were a continuous signal wave. become.

The state of this compressed signal is shown and explained in FIGS. 2A and 2B.

The output signal of the signal rate conversion circuit group 51-1.51-2 is inputted to the signal assignment circuit group 52-1.52-2 and is given time slots in a predetermined order. SDl, SD2 in FIG. 2A(a). ..., SDn, the speed-converted communication signal is transmitted to the wireless transmission circuit 32-1.32-
2 (simply shown as 32) indicates that each time slot is allocated separately.

Here, as shown in the figure, one time slot accommodates a synchronization signal and a control signal or a call signal (and control signal). If the call signal is not implemented, the call signal portion is added from empty slot 1 to signal 0 only by the synchronization signal added by the call path control section 81. In this way, as shown in FIG. 2A (a), in the wireless transmission circuit 32-1, 32-2,
Signals forming one frame are applied to the modulation circuit in time slots SD1 to SDn.

This time-series multiplexed signal is transmitted to the radio transmitting circuit 32-1
．． At 32-2, the signal is amplitude- or angle-modulated and then sent out into space from the antenna section. However, depending on the system, a wireless signal may be transmitted only in a time slot in which a control signal or a communication signal is implemented, and no wireless signal, including a carrier wave, may be transmitted in other time slots.

When making or receiving a telephone call, the wireless base station 30
Regarding the transmission of control signals between the mobile radio device 100 and the mobile radio device 100, it is possible to use either within the speech signal band or outside the speech signal band.

Figure 3A shows these frequency relationships. That is, the same (a
) is an example of an out-of-band signal, and as shown in the figure, the low frequency side (250Hz>) or the high frequency side (31 8501-I z ) can be used.This signal can be used, for example, to send control signals during a call. (For example, when you want to switch zones during communication or apply diversity).

These control signals are generated in the control unit 40, as well as control signals from the barrier exchange 120 and the communication path control unit 8.
The control signal from 1 is relayed or converted by the control unit 40 to be created and sent out.

The control signal sent from the mobile radio device 100 is received by the radio receiving circuit 35-1.
Sent to f&20.

FIG. 3A (b) shows an example of an in-band control signal, which is used when making and receiving calls.

The above examples were all tone signals, but 1 to
By increasing the number of signal signals or modulating signals 1 to 1 to form subcarrier signals, it becomes possible to transmit various types of signals at high speed.

The above was a case of analog signals, but if a digital data signal is used as a control signal, it is also possible to digitally encode the call signal and time-division multiplex the two to transmit. Circuit in case #
I or 2E (b).

FIG. 2E(b) shows a case where an analog audio signal is digitized by a digital encoding circuit 91, and this and a data signal are multiplex-converted by a multiplex conversion circuit 92, and then applied to a modulation circuit included in the wireless transmission circuit 32. This is an example.

Then, it is received by the opposite receiver, and the second E
If the operation is reversed to that shown in FIG. 3(b), it is possible to extract the call signal and the control signal separately.

On the other hand, the signal sent from the mobile radio device 100 is received by the antenna section of the radio base station 30, and is received by the radio receiving circuit 35.
(Input to 35-1 and 35-2>. Figure 2A (
b) schematically shows this upstream input signal. That is, time slot SU1. S2.・・・
, sun is the mobile radio 100-1.100-2. −
．． Radio base station 30 (for example, 3C) from 100-n
1> Indicates a transmission signal addressed to 3. Also, each time slot S1゜S2
．． ..., the details of sun are shown in Figure 28 (b
) as shown in the lower left of the synchronization signal and control signal or (
and) consists of telephone signals. However, if the distance between the radio base station 30 and the mobile radio device 100 is small or depending on the signal speed, it is possible to omit the synchronization signal. Furthermore, the waveform of the radio carrier wave of the above-described uplink radio signal within a time slot is schematically shown in FIG. 2B (C).

Of the input signals that have arrived at the radio base 830, the control signal is immediately applied to the control unit 40 from the radio reception circuits 35-1 and 35-2. However, depending on the magnitude of the speed conversion rate, it is also possible to apply similar processing to the call signal and then apply it to the control section 40 from the output of the signal speed restoration circuit group 38-1, 38-2. Further, the call signal is applied to the signal selection circuit group 39-1, 39-2.

A timing signal from a timing generation circuit 42 that generates a predetermined timing is applied to the signal selection circuit group 39-1, 39-2 according to a control signal instruction from the control unit 40, and each time slot SU1 ~Sun
A synchronization signal, control signal, or call signal is separated and output for each signal. Each of these signals is transmitted to the signal speed restoration circuit group 38-1.
．． 38-2. This circuit is a speed conversion circuit 131 (Figure 1B-1) in the mobile radio device 100 on the transmitting side.
This function allows the original signal to be faithfully reproduced and transmitted to the gateway exchange 20.

The manner in which signals are transmitted in the signal space according to the present invention will be explained below using the required transmission band and the relationship between this and adjacent wireless channels.

As shown in FIG. 1C, the control signal from the control section 40 is applied to the wireless transmission circuit 32-1.32-2 in parallel with the output of the signal allocation circuit group 52-1.52-2. However, depending on the size of the speed conversion rate, after performing the same processing as the call signal, it may be added to the wireless transmission circuits 32'-1, 32-2 from the outputs of the signal allocation circuit groups 52'-1, 52-2. is also possible.

5 FIG. 1D-1 shows another embodiment 10 of the mobile radio device 100.
0B is shown. The difference here from that shown in FIG. 1B1 is that it is now possible to perform diversity transmission and reception using two time slots using one or two radio channels. , for that purpose, two speed restoration circuits 138-1, 138-2,
a signal mixing circuit 152 for mixing their outputs;
A signal division circuit for dividing the signal to be transmitted] 39, two speed conversion circuits 131-1 and 131-2 for speed conversion of the divided signals, and four synthesizers 121-1 to 131-2. 1214, and further includes a speech quality monitoring section 157 and an interference detector 162.

2 transmitter/receiver stands, total of 4 synthesizers 1211-12
The outputs of channels 1-4 are switched by switches 122-1 and 122-2, and two radio channels can be transmitted and received in a time-divided manner. The call quality monitoring unit 157 constantly monitors the call quality during communication, and when it deteriorates, the control unit 1
Report to 40B. Also, the interference detector 162 detects [
The controller 140B monitors the presence or absence of interference and, if a certain amount or more of interference is detected, reports it to the control unit 140B.

An embodiment of the power amplification power supply section 170B shown in FIG. 1D-1 is shown in FIG. 1D-2. Since smooth operation may not be expected with a single capacitor due to the charging/discharging cycle relationship of the capacitor, two capacitors C1 and C2 are used as shown in Figure 1D-2, and the switch 195-1 is used.
．． 1952 for each, and have the transmission/reception intermittent controller 123B control them. The operation in this case is the same as one capacitor C shown in FIG. 1B-3, which is operated in parallel with two capacitors, so a description thereof will be omitted.

Also in the mobile radio device 100B shown in FIGS. 1D-1 and 1D-2, among the functions of the radio base station 30, when two call signals are transmitted using two time slots, the reception It has the circuit configuration required to do so. FIG. 3B shows the frequency distribution on the output side when an original signal, for example, a speech signal (0.3 KHz to 3.0 KH2) passes through the signal speed conversion circuit group 51 (FIG. 1C). In other words, if the audio signal is converted 15 times as shown in Figure 3B, the frequency distribution of the signal is < 4.5KHz.
This means that it has been expanded to ~45KH2. The figure shows a case where the control signals are simultaneously transmitted using the lower frequency band of the call signal. Among these signals, there is a control signal (0.2~4.0KH2) and one call signal (4.0KH2).
. The same applies to the speech signals accommodated in the other time slots SD2 to SDn.

That is, time slot [~SDI (i=2゜3
, -, n) accommodate control signals (0, 2 to 4.0K112) and communication signals CHi (port Z to 4, 5 to 45). However, the signals within each time slot 1 to 1 are arranged in chronological order, and signals within multiple time slots are not simultaneously applied to the FI line transmitter circuit 328 1.32-2. .

These call signals are sent to the wireless transmission circuit 32 along with control signals.
When added to the angle modulation section included in '-1 and 32-2, the required transmission band requires at least fo±45KH2. However, fo is a radio carrier frequency. If there are multiple wireless channels given to the system, the speedup of the signal by the signal speed conversion circuit group 51-1.51-2 is limited to a certain value due to the limitations of these frequency intervals. become. Let f be the frequency interval of the plurality of wireless channels. , and the maximum signal speed due to the above-mentioned speed increase of the audio signal is fH, then the following inequality must hold between the two.

f > 2fH ep On the other hand, in digital signals, audio is usually 16 to 64 kb
Since the digital signal is digitized at a speed of about /s, it is necessary to raise the scale on the horizontal axis in Figure 3B, which describes the case of an analog signal, by about one digit to read it. It is also becoming established.

Further, the control signal input from the mobile radio device 100B to the radio base station 30 is input to the radio reception circuit 35-1, 35-2, or a part of its output is input to the control unit 40, and the other part is input to the control unit 40. The signal g is sent via the signal g selection circuit group 39-1.degree. 39-2 to the signal speed restoration circuit group 38-1.degree. 38-2. After the latter control signal undergoes a speed conversion (conversion to a low speed signal) that is completely opposite to that at the time of transmission, it becomes the same signal speed as that used in the general telephone network 10 and is transmitted via the signal processing section 31. Gateway Exchange [Sent to 20.

1 [FIG. 1 shows another embodiment 100C of the mobile radio device 100]
It is shown. Here, the difference from the mobile radio 11100 shown in FIG. 1D-1 (including FIG. 1D-2) is that there are two sets of radio transmitting circuits 132-1 and 132-2 and two coarse radio receiving circuits 135-2. 135-2 are provided, and the outputs of the synthesizers 121-1 to 121-4 are printed on and off via switches 124-1 to 124-4, which are turned on and off under the control of the transmission/reception intermittent controller 123C. 0 is added. This transmission/reception intermittent controller 123c is the controller 1
/1-Suitable for instructions from QC Switch 124-1~
121-4 opens and closes. With such a configuration, the mobile radio device 100C has the advantage that there is no risk of radio interference and that transmission and reception diversity can always be performed with the same radio base station 30.

Next, the opening operation of the system according to the present invention will be explained in the following order.

(1) Location registration (2) Calling operation (3) @Call operation (1) Location registration The mobile radio device 100 used in the present invention is shown in FIG. 1B-1, FIG. 1D-1, and FIG. 1E. There are various configurations as shown, any of which can be used. however,
For convenience of explanation, the description will focus on the location registration operation of the mobile radio device 100 shown in FIG. 1B-1. Other mobile radio devices 100, for example, those shown in FIG. 1D1 are synthesizers 121-1 and 121-3.
If only 121-2.1214 is in operation and the other 121-2.1214 are inactive, the configuration will approximately be as shown in FIG. 1B-1. Similarly, in the mobile radio device 100C in FIG. 1E, only the radio receiving circuit 135-1 and the radio transmitting circuit 1321 are operating, and the radio receiving circuit 135-2
Since the wireless transmission circuit 132-2 can be regarded as being inactive,
These mobile radio devices 100, 100B, and 100C are simply referred to as mobile radio device 100.

In the home area where the mobile radio device 100 is permanently located, or in the ROHM Kou 1 Noah, which is a service area other than the home area, the gateway switch 20 and surrounding wireless base stations 30-1 to 3O-1) When the power switch of the mobile radio device 100 is turned on and the mobile radio device 100 starts operating, the first thing that is performed is a location registration operation.

Prior to explaining the operation, a method of allocating radio channels to the radio base station 30 in a system to which the present invention is applied will be described. The following method is possible2 and is exactly the same as the method currently used in analog systems.

(a) All radio channels can be used by each radio base station 30. (b) The radio channels that can be used by each radio base station 30 are allocated in consideration of the number of repeated zones in order to eliminate co-channel interference. (C) In addition to the distinctions in (a) and (b) above, the wireless channels given to the system are divided into control-only and call-only channels, and those that are not. (a), (b),
(C> can be combined to create 4 different systems,
Furthermore, if we include the actual usage, an extremely large number of systems will be realized. The present invention is applicable to all of them.

However, in the following explanation, it is assumed that the following allocation method is used. That is, all radio channels can be used in each radio base 830, and both control and communication radio channels are not classified.

Additionally, in order to ensure smooth operation of the system, the following method is adopted.

> All time slots within all radio channels transmitted from each radio base 830 are synchronized by the synchronization signal supplied from the gateway switch 20.

11) Among the signals transmitted from the barrier switch 20 to the mobile radio device 100, when the signals are transmitted via different wireless base stations 30, the signal transmission timing, signal format, modulation depth, etc. All are the same.

However, other channel allocation methods and other methods for system operation will be added to the explanation as appropriate.

Furthermore, it is assumed that the following points are taken into consideration in the system design based on the radio wave propagation characteristics of the system to which the microcell is applied.

In other words, when the size of the zone becomes a small zone with a radius of one fine line or less, which is called a microcell,
The radio wave propagation characteristics vary greatly depending on the location, and the service area of one wireless base station 30 differs greatly from a circular shape, becoming an ellipse (ellipse) or even a complex shape with unevenness.・Each location in the area is less likely to be covered by one wireless line,
It will either be a dead area that is not included in any zone, or it will be covered by multiple wireless zones at the same time. In the former dead area, communication is impossible, so in an actual system, a larger number of wireless base stations 30 than necessary would be installed in order to eliminate this. As a result, the overlapping of service zones is further promoted. In such a system,
When a location registration signal, which will be described later, is transmitted from the mobile radio device 100, it can be satisfactorily received by a plurality of radio base stations 30.

The flow of the location registration operation under such system conditions is shown in FIGS. 4A and 4B and will be described.

When the power switch of the mobile radio device 100 is turned on, a location registration signal for registering the current location is sent to the uplink radio channel, for example, from slot 5 to slot 1 to slot 1-1. For example, 30-1, 3C)-p (p=2.3°...
) (3161, FIG. 4A).

This is possible only when there is an empty time slot 5 of the communication channels sent out from the nearest wireless base station 301, etc.
This is because the radio channel CH1 to the right of D1-1 is captured, timing information is obtained, and S1-1 is used for the empty time slot I of the corresponding uplink radio channel C111.

In this case, even in the radio base #30-1.30-p which is in the vicinity of the mobile radio device 100 and is in a communicable state, the time slot S D 1-1 is the empty time slot 1. This is clear from the fact that they are implementing career sense as described above.

In addition, in all radio base stations 30, all the receivers equipped therein are in a waiting state to receive signals within all time slots of a determined radio channel.
Upon receiving the location registration signal from 00 (Sl 62.S
l63) Many radio base stations 30-1 and 30-p check the reception quality and store the ID in the ID identification storage unit 82 (S164).
．． 5165). As a result of checking the reception quality, if it is higher than the fixed value (S166YES, 3167YES), a location registration request signal is sent to the gateway exchange 20 (3
168. Sl 69). Upon receiving this location registration request signal (S170), the gateway exchange 20 sends the mobile radio 100
All wireless base stations 30-1 that have requested location registration.
．． 30-p ID, received signal quality, etc., and also create a table of the ID of each radio base 83C)-1, 30-p and the radio channel number (in this case C1
-41) or decides to notify the transmission timing (3171, Fig. 4B) For example, the wireless base station 30-1
time slot 5DI-1 of downlink radio channel C port 1, and the same <5D1-2 for radio base station 30-2.
．． . . . Similarly, 3Q-n has the same <5DI-n.

These are included in the registration completion signal, and each wireless base station 3
0-1.30-p (S172). The wireless base station 37 0-1.3O-1) that received this registration completion signal (3173, 3174) receives the time slot 5D1-1.8 of the downlink wireless channel 0 port 1.
D1-1)(F)=2.3. ...> to the mobile radio device 100 (3176.3177).

The registration completion signal transmitted in the time slot specified by the barrier switch 20 in this way is transmitted to the mobile radio device 100.
Good reception with no wireless interference.

Then, upon receiving this registration completion signal (S177), the mobile radio device 100 inspects the received content and stores the ID (identification number) of each registered radio base station 30-1, 30-p in the ID information collation storage. 182 (8178).

With the above operations, the location registration operation is completed and the device enters a standby state for an incoming call.

Next, it is assumed that the mobile radio 100 moves from the zone in which its location was registered while it is in the handset (not talking) state and moves to an adjacent zone. The recognition of this movement is performed by the wireless base station 30-1.
The ID of the wireless base station 30-1 in the 8 control signal contained in each time slot of the wireless channel that is constantly transmitted from the mobile wireless device 1
It can be determined by comparing it with the ID stored in 00.

The radio channel that is constantly transmitted from the above-mentioned radio base station 30-1 etc. may be a radio channel dedicated to control,
It may also be a wireless channel being sent out for communication with other third parties. In the latter case, each time slot includes the ID of the wireless base station 30, which will be verified.

In addition, in a system in which signals are not always transmitted from the wireless base station 30-1, etc., the mobile wireless device 100 sends out a location registration confirmation signal at regular time intervals, and the wireless base station M30 that receives the signal transmits the signal. It is possible to confirm the ID of the wireless base station 30 from the signal sent.

As a result, if it is discovered that the ID information of the obtained radio base station, for example 301, is new base station ID information different from the base station ID information previously stored in the mobile radio 100, the mobile radio It is determined that the aircraft 100 has moved to a new zone, and the control unit 140 (see FIG. 1B-1) updates the location registration in the ID information verification storage unit 182.

That is, the ID information of the mobile radio t1100 is transmitted to the radio base station to which the received signal is sent, for example 30-2, using the uplink radio channel having the vacant time slot 1-.

The radio base station 30-2 that successfully received this signal performs the same procedure as already explained, and the gateway switch 20-2
The location registration signal of the mobile radio device 100 is sent to the mobile radio device 100. Upon receiving this signal, the gateway switch 20 operates the ID identification storage unit 24 in its own device, rewrites the old information to new information as the location registration information of the mobile radio 100, and sends the mobile radio from the radio base station 302 to the new information. I will inform 100 about this.

This updates the location registration of mobile radio 1100.

The above update work is necessary because the mobile radio 100 is in standby mode, and if you move to a new channel during communication (talking), a new radio channel will be assigned to the gateway switch 20, as will be described later. When this is performed between the new wireless base station 0 30-2 and the mobile wireless device 100, the location registration is updated at the same time, so no special operation is required.

In the above explanation, the mobile radio tl100 having the configuration shown in FIG. 1B1 was used. The mobile radio device 1008.100C shown in FIG. 1D-1 and FIG. 1E has been described assuming that some of its functions are inactive. In an actual system, there is no need to suspend the function; rather, it is desirable to actively utilize it. That is, when all the functions are operated, the mobile radio device 100 shown in FIG. 1B-1 exhibits the following excellent capabilities that cannot be obtained with the mobile radio device 100.

> Diperity transmission becomes possible, and it is possible to simultaneously send location registration request signals using two different wireless channels.

ii) Diversity reception becomes possible, and signals on different radio channels from the same or two different radio base stations 30 can be received simultaneously.

):) and ii) Improving the reliability of control signals, 1 It becomes possible to speed up the registration operation.

(2) Calling operation will be explained using flowchart 1- shown in FIGS. 58 to 5C.

I turned on the power of the mobile radio device 100, and immediately (
1> The location registration operation performed in the section 1) has been completed. Therefore, the handset of the telephone equipment section 101 is taken off-hook (
When the call is started (3201, Figure 5A), the CB1
Find an empty time slot S1-n and use this to send a call signal to the wireless base station 30-1.
Send to. That is, to explain the operation of the mobile radio device 100, first, reception is possible by capturing a synchronization signal within the time slot SDi shown in FIG. 2A (a). The control unit 140 sends a control signal to the synthesizer 121-1 to generate a local oscillation frequency that enables reception of the C-th wireless channel 1, and also turns on the switch 12 22-1 to turn on the synthesizer 121-1 side. It is in a fixed state.

Furthermore, the synthesizer 121-3 in FIG. 1B-1 receives a control signal from the control unit 140 to generate a local frequency that enables transmission of the wireless channel C port 1. It is also assumed that the speed restoration circuit 138 is in an operating state.

Further, the switch 122-2 also turns on the synthesizer 121-3 side and becomes fixed. Next, wireless channel C
The mouth 1 is used to send out a call control signal output from the telephone unit 101. Further, it is assumed that the speed conversion circuit 131 is in an operating state.

Now, the above control signal is transmitted using, for example, the time slot Sun shown in FIG. 2A(b). This control signal is sent out under the control of the transmission/reception intermittent controller 123 (B, C) shown in FIG. 1B-1, FIG. 1E, etc., and the output of the power amplification power supply section 170 (B, C) The power amplification section] 49 is limited to the period of time slot Sun and is sent in bursts, so no signal is sent during other time periods, which adversely affects other communications. Never. However, if the speed of the control signal is relatively slow or the amount of information in the signal is large,
If it cannot be accommodated in one time slot, the same time slot in the next frame or roughly
It is transmitted using slot l~.

Specifically, the following method is used to capture the time slot Sun. As shown in FIG. 28(a), the control signal transmitted from the radio base station 30 includes a synchronization signal and a <itilJm signal following it, and the control signal is transmitted from the mobile radio device 1.
By receiving this, frame synchronization becomes possible. Furthermore, this control signal includes control information such as the currently used time slot I~, unused time slot (empty time slot display), etc. Depending on the system, the time slot sD* < r=1
．． 2゜...,n) or when used by other communications, it may contain only synchronization signals and speech signals, or even in such cases, unused time slots usually contain synchronization signals. signal and a control signal, and by receiving this control signal, the mobile radio [10
It is possible to know which time slot should be used to send out the calling signal.

Note that if all time slots are in use,
It is not possible to make a call on this wireless channel, and it is necessary to search for another wireless channel.

Also, there may be cases where no empty slot is displayed in any of the time slots, and in this case, the following audio multiplex signal SD1. SD2. ..., it is necessary to search for the presence of SDn one after another and check for empty time slots.

Now, returning to the main topic, the mobile radio m1oo, which has received the control information sent from the radio base Q30 by one of the above methods, determines in which time slot it should send the call control signal and its transmission timing. It is possible to make a judgment including

Therefore, assuming that the time slot Sun for uplink signals is an empty slot, it is decided to use this empty time slot, send out a control signal for calling, and use the response signal from the wireless base station 30 as needed. It is possible to take out the timing and send out the control signal of parse 1~.

If a call is made from another mobile radio at the same time, the calling signal will not be properly transmitted to the radio base station 30 due to call collision, and the operation will have to be restarted from the beginning, but this probability is When viewed as a system, J
5 is being supported. - In order to roughly reduce call collisions, the following method is taken. It is mobile radio 100
Assuming that you have found an empty time slot in which you can make a call,
Instead of using the entire time slot, some mobile radios use only the first half and others only the second half. In other words, as a calling signal, the portion of the time slot used is divided into several types. Another method is to create many types of frequencies for control signals, group a large number of mobile radio devices, and give these to each group. For example, even if control signals with different frequencies are transmitted simultaneously using the same time slot, no interference will occur at the wireless base 830.The above two methods can be used separately, or if used together, the effect will be rise synergistically.

Now, the call control signal from the mobile radio device 100 is sent to a plurality of nearby radio base stations 30-1, 30-2°..., 3
When the ID (identification number g) of the mobile radio device 100 is detected (S202, 5203), even if 10 of the mobile radio device 100 is unregistered, the It memorizes the time and sends a calling signal to the gateway exchange 20 (3204°5205). Similar to the already registered wireless base station 30, a calling signal is sent to the gateway exchange 20.

Since the gateway switch 20 receives similar signals from a plurality of wireless base stations 30-2 and the like in addition to the wireless base station 30-1, it selects a wireless base station 30 suitable for communicating with the mobile wireless device 100. The radio base stations to be used for communication in the zone are determined by comprehensively considering the traffic conditions, reception quality, etc.7.
1, 3C)-2, the wireless channel to be used for communication is determined to be Cl-11, and the time slots are determined to be 1 and 2, respectively (3206), this is determined by the wireless base station 30.
-1.30-2 (S207). The other radio base stations 30 are notified of the inability to communicate or are caused to send a signal from timer 1.

Now, the wireless base 8301.30 that received the communication command signal.
-2 (3208, 5209), proceed with preparations for reception on the designated wireless channels and time slots 1 to 1, and send the signals to the mobile radio m1oo using the radio channel C111 and time slots 5D1-n, respectively, via the barrier exchange I !
Convey instructions from 20 (S210, 821"I, 5th
Figure B). In the mobile radio device 100, this signal is transmitted from the radio base stations 30-1 and 30-2 at the same time and with the same signal content, so there is no risk of radio interference and it is successfully received.

In response, the mobile radio device 100 transitions to a state in which reception is possible in the two instructed time slots 1 to 5D1-1 and SD8 1-2, and the downlink time slots 1 to 5D1-1.5DI- S1, which is a time slot for two upstream radio channels corresponding to
-1,5U1-2 (see FIG. 2A(b)). At this time, in the control unit 140 of the mobile radio device 100, the transmission/reception intermittent controller 123 is operated, and the switch 122 is activated.
'-16 and 122-2 start operating (8212>
. At the same time, a slot switching completion report is sent to other radio stations 30-1 and 30-2 using uplink time slots 1 to 5U1-1 and 5U1-2, respectively, and dials 1 to
- Waits for (3213>).

Time slot 5U of the radio carrier wave of this upstream radio signal
The state of 1-1 etc. is schematically shown in FIG. 2B (C). The radio base station 30 has a time slot S1.
-1.5U1-2, 5U1-3 and S1-n are included in one frame and sent as uplink signals from other mobile radio devices 100.

The radio base station 39 0-1.30-2 that received the slot switching completion report sends a calling signal to the barrier switch 20 (3214.3215), and the barrier switch ta20 that received this sends the ID of the mobile radio 100. is detected, the necessary switch of the switches BY included in the barrier exchange fX 120 is turned on (3216>), and a dial tone is sent out (3217>).

This dial tone is the radio base station 30-1 and 3
0-2, and wirelessly transferred from the radio base stations 30-1 to 30-2 to the mobile radio device 100 (3218.32
19>. In this transfer, the same signal contents instructed from the gateway exchange 20 are transmitted. Therefore, the mobile radio device 100 can obtain a time diversity reception effect and can receive signals well.

Now, as described above, the mobile radio device 100 confirms that the communication path has been set (S220). When this state is reached, a dial tone can be heard from the handset of the telephone section 101 of the mobile radio 100, and the transmission of a dial signal begins. This dial signal is speed-converted by a speed conversion circuit 131 and transmitted from a radio transmission circuit 132 including a transmission section 134 and a transmission mixer 133 to an upstream time slot 5U11, S1-
2 (3221, Figure 5C).

Thus, the transmitted dial signal is sent to the wireless base station 30-
1.30-2 is received by the radio receiving circuit 35-1. This radio base station 30-1, 30-2 has already responded to the calling signal from the mobile radio 100,
As well as giving a slot, the wireless base station 30-1.30
-2 signal selection circuit group 39-1 and signal allocation circuit group 5
2-1 to operate uplink time slot S11.
, or 5U) 2 and downlink time slot 1
~5DII or 5D1-2 signals are being transmitted.

In addition, the communication path control unit 81 selects a switch SWR for reception among the switch group 83 according to a control signal from the control unit 40.
1-1-1 or 1-1-2, and a switch 5WT1-1-1 for transmission. Or turn on 1-1-2 (
It is set to the state shown in Fig. 1C). Therefore, the dial signal transmitted from the mobile radio device 100 passes through the signal selection circuit 39-1-1 of the signal selection circuit group 39-1, and then passes through the signal speed restoration circuit 38 of the signal speed restoration circuit group 38-1. -1-1, where the original transmission signal is restored, transferred via the switch group 83 to the signal processing unit 31 as a call signal 22-1 to the barrier exchange 20 (3222, 3223), and then transferred to the telephone network A communication path to 10 is set up (3224>).

On the other hand, a human signal from the barrier switch 20 (initial control signal,
When a call is started, the call signal) is sent to the wireless base station 30-1.
．． In 30-2, switch 5WT1 of switch group 83
-1-1. Alternatively, after passing through 1-12, the signal speed conversion circuit 51-1-1 of the signal speed conversion circuit group 51-1 receives speed conversion, and then the signal allocation circuit 521-1 of the signal allocation circuit group 52-1 to time slot 1 by 5DI-1,3
D1-2 is given. Then, the time slots 1 to 5D1-1 of the wireless channels downstream from the wireless transmission circuit 32
．． Alternatively, it is transmitted to the diameter 2 dynamic line machine 100 using 5DI-2. The mobile radio device 100
Now, time slots 1 to 5D of radio channel C]11
1-1. Alternatively, in 5D1-2, it is on standby for reception and is received by the radio reception circuit 135, and its output is input to the speed restoration circuit 138. In this circuit, the original signal for transmission is restored and sent to the telephone unit 10 via a signal mixing circuit 152.
1 is input to the handset. Thus, the mobile radio 100
A call is started between the user and a regular telephone within the regular telephone network 10 (3225>).

The call is terminated by on-hooking the handset of the telephone unit 101 of the mobile radio device 100 (S226>, the end-of-call signal and the on-hook signal from the control unit 140 are transmitted to the speed conversion circuit 1.
31 from the wireless base station 30- from the wireless transmitting circuit 132.
1,3C)-2 and is sent to (3227>,
The control section 140 stops the operation of the transmission/reception intermittent controller 123, and fixes the switches 122-1 and 122-2 to the output ends of the synthesizers 121-1 and 121-3, respectively.

3 On the other hand, when the control unit 40 of the radio base station 30-1, 30-2 receives the call termination signal from the mobile radio device 100, it transfers the call termination signal to the gateway exchange 20, and sends the call termination signal to the switch group 83. 5WR1-1-1 or 1-1-2, 5WT1-
Turn off 1-1 or 11-2 to end the call (
3228, 5229). At the same time, wireless base station 30-1.3
The signal selection circuit group 39 (39-1>) and the signal assignment circuit group 52 (52-1) in 0-2 are opened.The barrier switch 20 that receives this call termination signal turns off the switch group 23. (3230) In the above explanation, the wireless base station 30i or 30-2 and the mobile wireless device 1
00 is exchanged with the signal speed conversion circuit group 51-1. Although the explanation has been made assuming that the signal does not pass through the signal speed restoration circuit group 38-1, etc., this is for convenience of explanation, and as with the call signal, the signal speed conversion circuit group 51-L signal speed restoration circuit group 38-1, etc. Communication can be carried out without any problem even through the signal processing section 31 or the signal processing section 31.

4 (3) Incoming call operation The incoming call operation to the mobile radio 11100 will be explained using flowchart 1- in FIGS. 68 to 6D.

It is assumed that the mobile radio device 100 is on standby with the power turned on. In this case, the mobile radio device 100 has already completed location registration and is in a state of waiting for an incoming call except when making a call itself. In this state, the mobile radio device 100 is waiting for a signal transmitted from the nearby radio base station 30. Depending on the system, there are various cases as follows.

) When there is a dedicated wireless channel for control In this case, the control signal included in each time slot of the control channel determines which control channel to listen to if there are multiple control channels. , even in the case of one channel, instructions such as which time slot should be used for standby are issued, and the mobile radio 100 follows these instructions to standby. Note that the above instructions are for the wireless base station 30
Alternatively, it is indicated by the barrier exchange [20.

〉 When the radio channel does not have a control or call division In this case, the call will be made to meet at an empty time slot in a certain call channel according to the method determined by the system. Specifically, for example, the following method is used.

If the wireless base station 30 has one wireless channel,
In a system that only has channels, search for an empty time slot and select a time slot according to the instructions of the control signal contained therein (for example, 5D1-1>). will be waiting in a time slot with a lower number.

Next, a plurality of radio channels are provided to the system and the radio transmitting circuits 32-1, 32-2 . ...
32-n (only up to 32-2 is shown in Figure 1C due to space constraints) is the downlink wireless channel C1-11 (frequency 1.), 0 port 2 (frequency 12).
>, ..., CHn (frequency ".") and transmits using the radio receiving circuit 35-1.
Due to space constraints, only up to 35-2 in Figure C corresponds to the upstream radio channel C port 1 (frequency f1),
C1-12 (frequency f2),...

When receiving using C port n (frequency fn), 〉 Specific vacant time slot of the wireless channel indicated by the control signal included in the wireless channel. It will be sent from 30.
Directed constantly or intermittently from free time slots on the next radio channel.

) The radio channel (hereinafter referred to as channel C port 1) is transmitted from the radio base station 30 and the empty time slots 1 to 1 of the radio channel (hereinafter referred to as channel C port 1) are determined according to the procedures determined by the respective systems. ) is in the receiving state. This is possible by capturing the synchronization signal within the time slot +-SD; shown in FIG. 28(a)7. For example, among the wireless channels transmitted from the wireless base 130, the channels to be listened to are set to 0, 1, and 1. When the time slot is 5D1-1, the control unit 140 sends a control signal to the synthesizer 121-1 to generate a local frequency that enables reception of the wireless channel C1-11, and The synthesizer 4 noiser 121-1 side is also turned on and fixed.

ii> The barrier switch 20 and the wireless base station 30 do not issue the above instructions, but transmit the incoming call signal all at once using the free time slots i~ of all the wireless channels at the time of incoming call. Although this method is somewhat disadvantageous in terms of effective frequency utilization, it enables inexpensive and highly reliable signal transmission.

Under the above conditions, the mobile radio 11100 is sent from the general telephone network [O] to the gateway exchange 20 via the exchange 11.
Suppose there is an incoming call addressed to the user. When the gateway exchange 20 searches the ID identification storage unit 24, it finds that 8 mobile radio devices 100 are currently connected to radio base stations 30-1 and 30.
Since it recognizes that the location is registered in mobile radio t1100, it prepares to send an incoming call signal to mobile radio t1100. In other words, the traffic within the wireless base station 830 of the wireless base station 30 that is in charge of communication.

Determine by considering signal quality etc. at the time of location registration. As a result, when the radio base station to be in charge of communication is determined to be 30-1°30-2, the radio channel C1. Using the vacant time slot 5D1-1, an incoming call signal is sent to the radio base stations 30-1 and 30-2 (S251, FIG. 6A).

This signal is transmitted to the wireless base station 3C)-1, 30-2 as communication signals 22-1 to 22-m, and is transmitted via the switch group 83 to the signal speed conversion circuit B as communication signals 22-1 to 22-m.
1-2, and is transmitted to the control unit 40 (FIG. 1C) via the signal assignment circuit group 52-1, 52-2.

Then, the control section 40 instructs the communication path control section 81 to check which switches can be used as the transmitting and receiving switches SWT and SWR of the switch group 83, and to keep them in the on state.

Further, the signal is transferred to the mobile radio device 100 in the method instructed by the gateway exchange 20 (3252°3253>).

This method includes, for example, wireless base stations 30-1 and 30-2.
at the same time, on the same radio channel Cl-11.

The same signal is transmitted using time slot 5D1-1. The same signal is, for example, an ID signal tube incoming call signal display signal of the mobile radio device 100. Although the above explanation has mainly concerned the radio base station 30-1, similar operations are also performed in the same <30-2.

In the mobile radio device 100 that receives this signal, it is transmitted from the receiving section 137 of the radio receiving circuit 135 to the control section 140. In the control unit 140, this signal is transmitted to the own mobile radio device 10.
It is confirmed that it is an incoming call signal to 0 (S254.
), the ID of the mobile radio device 100 is not sent back as a response confirmation signal to the radio base stations 301 and 30-2 using time slots 1 to S1-1 and S1-2, respectively. (S
255).

Now, the radio base station 30-1, 30-2 that received the incoming call response signal from the mobile radio device 100 recognizes the ID as N, performs a quality inspection (3256, 3257>, and sends the data together with these data to the gateway exchange 1120. Sends an incoming call response signal to (S
258,5259>.

By the way, the incoming call response signal from the mobile radio device 100 may be received not only by the radio base stations 30-1 and 30-2 but also by other nearby radio base stations 30-3 and the like. Alternatively, if the mobile radio device 100 does not update the location registration for some reason after completing the location registration, the radio base station 30-1. It may be well received by the base station 30 or the like. That is, the surrounding radio base station 30 constantly monitors the available time slots of each radio channel, and if a call is made from the mobile radio device 100,
Otherwise, if an incoming call signal is successfully received, the system is designed to take necessary measures immediately. As one of these measures, in the case of the above-mentioned incoming call response signal, the barrier switch 2
0 will be notified of this.

Due to the system operation described above, the incoming call response signal to the barrier switch 20 may include the ID of the unregistered radio base station 30 in addition to the ID of the mobile radio t150. When this incoming call response signal is received, the barrier switch 20
Now, check whether the ID of the mobile radio device 100 is already stored in the ID identification storage unit 24, and if it is not stored, the ID identification storage unit 24 is stored together with the quality inspection data of the wireless base 830. 24 and use this memorized ID
Along with this, a location registration signal is transmitted to the wireless base station 303 and the like. The subsequent operations are the same as those of the wireless base stations 3C)-1 and 30-2 whose locations have been registered.

Now, returning to the main topic, the barrier exchange 120 receives call response signals from a plurality of wireless base stations 30, and after confirming the ID (8260>), the wireless base station 30 to be communicated with, the wireless channel used, time slot 2, etc. They are determined and commanded to the wireless bases 830-1 and 302, respectively (S261, FIG. 6B).

The wireless base station 30-1 etc. that received this signal should confirm that the ID of the mobile wireless device 100 has been correctly registered.
262, 5263>, check whether the channel time slot specified by the gateway switch 20 is vacant and consider whether or not to switch. 5264.5265>, and send the resulting channel time slot designation signal. Downlink communication channel CH1, to time slot l 5D1-1
to the mobile radio device 100 (S266.526
7).

This channel time slot designation signal was received (
S268>, if the mobile radio device 100 confirms that the time slot of the specified channel is an empty channel (3269), it switches to the time slot of that channel and completes the channel time slot switching. Report up radio channel C111, time slot 1
~Send using S1-1 (3270, Figure 6G)
. The responses to the time slot designation signals sent from the other three radio base stations 30 are also the same as above.

The radio base station 301, etc., which confirms that the switching has been made to empty time slots 1~ (S271.5272), switches its own station's transmission and reception to this channel time slot, and sends a channel time slot switching completion signal. Send to barrier exchange [20 (S273.3274>).

When the barrier switch 20 receives the switching completion signal to the channel time slot 1, it transfers the signal to the telephone network 10 via the switch 11.
In order to set up a communication path to the wireless base station 301.30-2, the communication path control section 21 is operated to turn on the appropriate switch SW of the switch group 23, and the wireless base station 301.30-2 is connected to the telephone network 10 (S275). ). Therefore, from the telephone network 10 side, switch 1
A calling signal is sent out via 1 and barrier switch 20 (
S276>, this is confirmed at the wireless base stations 30 to 1,302 (3277.3278). Then, the call channel C port 1゜4 time slot 5D1-1. where a paging bell signal was set. ．． 3279.3280>, the mobile radio device 100 generates a ringing tone (S281>).

When the handset on the mobile radio 1100 side is lifted (off-hook) by this ringing tone (8282, Fig. 6D)
, channel 0 ports 1. Time slot 1~S1-1.5
An off-hook signal is sent by U1-2, and the wireless base station 3
C) transferred at -1, 30-2 (3283, 3284
> is received by the gateway exchange 20 (8285>, the switch 5W1-1-1.2-1-1 of the switch group 23 is on, and a call is not established between the mobile radio device 100 and the radio base station 30-1. Channel C111, time slot 5D1-
1. S1-1. Down frequency 11, up frequency f1,
Between mobile radio device 100 and radio base station 30-2, communication channel C1. Time slot 5D1-2, 5U1
-2. Downlink frequency "1.

Using the uplink frequency f1, the telephone network 10 and the mobile radio device 10
0 (3286>).

5 When the call ends, the handset is put down and the on-hook signal and end-of-call signal are sent to channels CH1, 5U1-1. S1
-2 to the wireless base station 30-1°30-2 (3
287>, wireless base station 30-1.30- that confirmed the end of the call
2 transfers this signal (3288, 3289>).

Upon receiving the on-hook signal and the call termination signal, the barrier switch 20 operates the communication control section 21 and turns off the switch SW in the switch group 23 that has been used up to now to terminate the call (S290>).

In the above description, the wireless channels used by the wireless base stations 30-1 and 30-2 are the same channel C port 1, but this does not necessarily have to be the same. Depending on the system, the same radio channel in adjacent zones may be unavailable. Assuming this case, channel C111 and CI
It may be set to -12.

However, in this case, synthesizer 1 in Figure 1B-1
In 21-1.121-3, it is necessary to generate the local oscillation frequencies of channel C port 1 and channel C port 2 at a predetermined timing, and fast response performance is required. In this respect, in the case of the mobile radio devices 100B and 100C having the configurations shown in FIG. 1D-1 and FIG. 1E, the operation becomes easy.

[Effects of the Invention] As is clear from the above description, by applying the present invention to a mobile communication system, it is possible to construct a system with higher frequency utilization efficiency than conventional systems. In addition, when portability is required as a mobile radio device, the capacity of the battery is required to be small and lightweight. The effects of the present invention are extremely beneficial to people because it is possible to achieve the desired purpose by utilizing the nature of the invention.

[Brief explanation of drawings]

FIG. 1A is a block diagram showing the configuration of the barrier switch included in the system of the present invention and its connection relationship with the telephone network and radio base station, and FIG. 1B-1 is a diagram of the mobile radio used in the system of the present invention. 7. Figure 1B-2 is a detailed circuit diagram of the radio receiving circuit shown in Figures 1B to 1. Figure 1B-3 is a power amplification power supply section that is the component shown in Figures 1B to 1. A circuit configuration diagram showing one embodiment; FIG. 1B-4 is a charge/discharge current waveform diagram for explaining the operation of the power amplification power supply section shown in FIGS. 1B to 3; and FIG. 1B-5 is a Figure 18-4 is a diagram showing the relationship between the charging/discharging current and the signal time compression ratio, Figure 1B-6 is a circuit configuration diagram showing another embodiment of the power supply section for power amplification, and Figure 1C is the main FIG. 1D-1 is a circuit configuration diagram of a wireless base station used in the system of the invention; FIG. 1D-2 is a circuit configuration diagram showing another embodiment of a mobile radio device used in the system of the invention; 1
The structure shown in Figure D-1 t7. FIG. 1E is a circuit configuration diagram showing one embodiment of the power amplification power supply section, which is an element, FIG. A time slot structure diagram for explaining the time slots used in the system of the invention, FIG. 2B is a diagram showing radio signal waveforms of time slots 1 to 1, and FIGS. 2C and 2D are diagrams of the system of the invention. Figures 2E (a) and (b) are spectrum diagrams and circuit configurations for explaining configuration examples of control signals used in the present invention. Figures 3A and 3B are spectrum diagrams showing spectra of call signals and control signals; Figures 4A and 4B are flowcharts showing the flow of location registration operations of the system according to the present invention; Figures 5B and 5C are flowcharts showing the flow of the calling operation of this system;
Figure A, Figure 6B, Figure 6C, and Figure 6D are flowcharts showing the flow of the call receiving operation of this system. 10... Telephone network 20... Gateway switchboard 21
...Communication control unit 22-1 to 22-n...Communication signal 23...Switch group 24...10 identification storage unit 25...S/N monitoring unit 30...Radio base station 31
...Control/call @processing section 32...Wireless transmission circuit 35...Wireless reception circuit 3
8... Signal speed restoration circuit group 38-1 to 38-n... Transmission speed restoration circuit 39...
Signal selection circuit group 39-1 to 39-n...Signal selection circuit 40...Control unit 41...Clock generator 42...Timing generation circuit 51...Signal speed conversion circuit group 51-1... 51-n...Signal speed conversion circuit 52...
Signal assignment circuit group 52-] to 52-n...Signal assignment circuit 0 81...Call path control section 82...ID identification storage section 83...Switch group 91...Digital coding circuit 92 ...Multiple conversion circuit 100.100-1 to 100-n-...Mobile radio device 10
1...Telephone unit 120...Reference crystal oscillator 121-1. '121-2...Synthesizer 122-
1,122-2...Switch 123...Transmission/reception intermittent controller 1241-124-4...Switch 131-1,131-2...Speed conversion circuit 132...
・Wireless transmission circuit 133... Transmission mixer 134...
Transmitting section 135... Radio receiving circuit 136...
Receiving Miku υ 137...Receiving section 1381.138-
2...Speed restoration circuit 139...Signal division circuit 14, 0...Control unit 141...Clock generator 142...Timing generator 143...Intermediate frequency amplifier 1 1/I-, 146...Goo 1-circuit 145...Discriminator 149...Power amplification section 152...Signal mixing circuit 157...Speech quality monitoring section 162...Interference disturbance detector 170...Power amplification Power supply section 182...ID information collation storage section 191.192...Current control circuit 194...DC-DC conversion circuit 195...Switch.

Claims (1)

[Claims] a transmitting means including a power amplifying means (149) for intermittently transmitting a pulse signal as a wireless signal; a capacitor (C) to be charged from a battery (E); power amplification power supply means (170) including a switch means (195) for supplying power to the power amplification means during the transmission period of a wireless signal;
A pulse signal transmitting device comprising: