JPS63279624A - Radio repeater - Google Patents

Abstract

PURPOSE:To effectively save power consumption due to the battery saving by selecting the time supplying power to a transmitter-receiver to relay a signal from a base station to a time required for sending a signal from the base station to a slave station. CONSTITUTION:The power from a power supply 6 is supplied to a 1st receiver 11 and a 1st transmitter 13 via a 1st switch means 10 and the power from the power supply 6 is supplied to a 2nd transmitter 23 and a 2nd receiver 21 via a 2nd switch means 20. In the standby state when the slave station awaits an incoming signal from the base station, since the relay station does not receive a signal from the slave station, the power is supplied to the 2nd transmitter 23 during the period of BS-off but no signal is sent, the power amplifier circuit included in the 2nd transmitter 23 is the class C operation, then the power of the 2nd transmitter 23 is far less than the power of the 1st transmitter 13.

Description

[Detailed description of the invention] [Industrial application field] The present invention uses a time division multiple access method.

The present invention also relates to a wireless communication system having a plurality of relay stations and a plurality of slave stations scattered around the circuits of each relay station, and particularly relates to a wireless relay device provided at each relay station.

[Conventional technology]

In a wireless communication system consisting of one base station, a relay station that relays signals from this base station, and a slave station that communicates with the base station via this relay station, A method of intermittently supplying power to the receivers of relay stations and slave stations is called a battery saving method. Furthermore, in the case of the one hour side method of the above wireless communication system, each communication channel uses the same frequency, and the time distinction between the channels is determined by the temporal position of the signal (hereinafter referred to as time slot). It will be done. For this reason, in order to connect the line correctly, we have to
As stated in the specification of No. 589, all the tail stations, relay stations, and slave stations must detect a synchronization signal to identify each channel transmitted from the base station. Therefore 9
In the case of time division multiplex communication, battery saving is synchronized, all relay stations and slave stations are synchronized to turn on and off their radios, and synchronization for channel identification from the base station is performed. This ensures that the signal is transmitted to the slave station. That is, the base station sends out a battery saving synchronization signal (hereinafter referred to as the B5-8YNC signal) at regular intervals. Relay station and slave station are B5-8YNC
When a signal is detected, t4 tree saving starts.

This battery saver is used when power is supplied to the relay station and slave station radios.

In order to ensure that the B5-8YNC signal transmitted from the base station at a predetermined period during operation is received, the time intervals of the intermittent operation of the power supply are determined. In this way, power is supplied to the radio intermittently to reduce power consumption.

In addition, the time during which power is supplied to the relay station and slave station (hereinafter referred to as BS off time) is the time when the base station sends an incoming call signal to call the slave station, for example, and the time when the slave station The response time to this signal shall be equal to or longer than the total time for sending the signal. Furthermore.

The power consumption of the relay station and slave station is reduced by setting the time during which power supply is stopped to the relay station and slave station (hereinafter referred to as BS on time) to be, for example, five times the BS off time.

Further, the relay station includes a first relay station for receiving signals from the base station.
, and a first transmitter for further transmitting signals from the base station to lower-level stations.

It also has a second receiver that receives signals from the lower station and a second transmitter that sends the signal from the lower station to the base station, and a power source for the two receivers and the two transmitters. By simultaneously cutting off and cutting off the supply, a power saving operation was carried out.

[Problem that the invention seeks to solve]

In the conventional relay station described above, the B5-8YN from the base station
When the C signal is received, the power supply to the first receiver and the first transmitter, and the second receiver and the second transmitter are simultaneously turned off for a certain period of time. After a certain period of time, again.

Power supply to the first and second transmitters and the first and second receivers is turned on. At this time, during the time when power is being supplied to the first and second transmitters and the first and second receivers (BS off time), the base station sends out an incoming call signal to call the slave station. The total time is the time required for the mobile station to send a response signal to this incoming call signal from the slave station. FIG. 4 shows the relationship between the time for transmitting the incoming call signal and response signal and the timing for battery saving. BS off time t. f, during tlo.

An incoming call signal is sent out, and during tl, the slave station identifies the incoming call signal, and during tl. During this time, the slave station sends out a response signal. Therefore, at the relay station, t. ff time.

It supplies power to all transmitters and receivers within the relay station. However, in this case, in Figure 4, the base station constantly sends out 9 incoming call signals, and the slave stations do not constantly send out response signals, so there is wasted power consumption during the period t,2. This means that you are consuming. Furthermore, in the relay station, the first transmitter that sends the signal from the base station to the lower station also performs power amplification, so it consumes much more power than the first receiver. It will be consumed. On the other hand, the second transmitter for transmitting the signal from the lower station to the base station does not transmit the signal even to the base station when it cannot receive the signal from the lower station, so it is called the second receiver. There is not much difference in power consumption. In addition, in a system that uses such a battery saving method, when a relay station receives a response signal etc. from a lower station, it is configured so that only the relay station that has received this signal stops its battery saving operation (as disclosed in the patent application). No. 58-13589) Note, in a series of battery saving operations.

As described above, the power-on time is the sum of the two incoming call signal transmission times and the response time from the slave station to this incoming call signal.An object of the present invention is to An object of the present invention is to provide a wireless relay device that is installed in each relay station in a wireless communication system that employs a television saving system and can more effectively reduce power consumption.

[Means for solving problems]

According to the present invention, in a radio relay device provided in each relay station in a time-division hyperactive multiple access communication system including a plurality of relay stations, a first receiver that receives a signal from a base station and a first receiver that receives a signal from a base station; A first switch means for turning on/off power supply to a first transmitter that sends a signal to a lower station, a first receiver that receives a signal from the lower station, and a base station for transmitting a signal from the lower station. and second switch means for turning on/off power supply to a second transmitter that transmits data to the second transmitter.

and detection means for detecting a battery saving synchronization signal (B5-8YNC signal) sent from the base station,
When the B5-8YNC signal is received, the first switch means is turned off.

A wireless relay device is obtained in which the second switch means is turned off a certain period of time after the first switch means is turned off. When a predetermined period of time has elapsed after receiving the B5-8YNC name, the first switch means and the second
The switch means is turned on.

Thread h below 〔Example〕 Next, the present invention will be explained with reference to FIG.

FIG. 1 is a block diagram of a wireless relay device of a relay station according to an embodiment of the present invention. 1 is an antenna, and 2 is an antenna duplexer. At the first receiver 11.

The signal from the base station is demodulated, passed through the reproduction circuit 12, and then modulated by the first transmitter 13. 4 is a shared device.

5 is an antenna. Battery saving synchronization (BS-5YNC) signal sent from the base station c.

After being demodulated by the first receiver 11, it is detected by the battery saving synchronization (BS-5YNC) detection circuit 3, and the output of this BS-5YNC detection circuit 3 is transmitted to the delay circuit 16. Timer circuit 15. Delay circuit 26° is input to timer circuit 25. The output of delay circuit 16 is connected to a 7-resoflop 140 set terminal. Timer circuit 1
The output of 5 is connected to the reset terminal of flip-flop 14. The output of the delay circuit 26 is the flip-flop circuit 2.
Connected to the set terminal of 4. The output of the timer circuit 25 is as follows.

Each is connected to a reset terminal of the flip-flop circuit 24. The output of the flip-flop circuit 14 is applied to the control terminal of the first switch means 10. When the output of the BS-8YNC circuit 3 is input to the delay circuit 16, the flip-flop circuit 14 is set by this circuit 16 after a certain period of time. As a result, the Q output of the flip 70 tube circuit 14 is “0”
Then, the first switch means 10 is turned off and the power from the power source 6 is transferred to the first receiver 11. It is no longer supplied to the transmitter 13 of $1. Here, the delay circuit 16 is configured to ensure that the BS-5YNC signal from the base station is correctly sent to the lower station.
The power supply from the power source 6 to the power source 6 is prevented from turning off. On the other hand, when the BS-5YNC signal is detected, #
The output of BS-5YNC detection circuit 3 is sent to timer circuit 1.
5, the timer circuit 15 determines the BS on time, and after the eEs on time, the frizzofrodde circuit 14
Reset. As a result, the flip-flop circuit 14
The output is “1”.

With the first switch means 10 turned on, power from the power source 6 is transferred to the first receiver 11. supplied to the first transmitter 13;
Signals from the base station are relayed and sent to lower stations.

The output of the flip-flop circuit 24 passes through the second switch path 22, is modulated by the second transmitter 231C, and is sent to the base station.

Power from the power source 6 is supplied to the first receiver 11 and first transmitter 13 via the first switch means 10, and power from the power source 6 is supplied to the second receiver 11 and the first transmitter 13 via the second switch means 20. transmitter 23. The second receiver 21 is supplied with the signal.

Next, the operation of this wireless relay device will be explained using FIG. 1. The battery saving synchronization signal (BS-5YNC signal) from the base station is demodulated by the first receiver 11 through the antenna 1° and antenna duplexer 2, then regenerated by the regeneration circuit 12, and sent to the first transmitter. After being modulated and further amplified at 13, the signal is transmitted through an antenna duplexer 4 and sent from an antenna 5 to a lower station. On the other hand, the signal demodulated by the first receiver 11 is input to the BS-5YNC detection circuit 3, and when the BS-5YNC signal from the base station is detected, the output from the B5-5YNC detection circuit 3 is sent to the delay circuit. 16
．． Timer circuit 15. Delay circuit 26. Timer circuit 25
Enter. A signal from a lower station 9 For example, a response signal from a slave station to an incoming call signal from a base station is sent to the antenna 5.
．． After being demodulated by the second receiver 21 via the antenna duplexer 4 and reproduced by the reproduction circuit 22.

After being modulated and amplified by the second transmitter 23, the antenna duplexer 2. The signal is sent to the base station via antenna 1. In the standby state where the slave station is waiting for an incoming call signal from the base station, the relay station does not receive the signal from the slave station, so the second transmitter 23 has no power during the BS off period. is supplied.

Since no signal is sent out, if the power amplifier circuit included in the second transmitter 23 operates in class C mode, the second transmitter 23
The power consumption is much lower than that of the transmitter 13.

On the other hand, upon receiving the BS-5YNC signal from the base station, the output from the BS-5YNC detection circuit 3 is input to the delay circuit 26 and the timer circuit 25. After the output of the BS-5YNC detection circuit 3 is delayed by the delay circuit 26 for a certain period of time, the delay circuit 26 sets the flip-flop circuit 24. As a result, the frizzo flop circuit 240 output becomes "0" and the second switch means 20 is turned off.
Power from the power source 6 is supplied to the second transmitter 23. second receiver 2
1 will no longer be supplied. When the output of the BS-5YNC detection circuit 3 is input to the timer circuit 25, the timer circuit 25
When the timer starts), the flip-flop circuit 24 is reset after a certain period of time. As a result, the output of the flip-flop circuit Q becomes "1" and the second switch means 20
Power is supplied from the power supply 6 to the second receiver 21 and the second transmitter 23 when the power is turned on/off.

Next, the timing of battery saving will be described using FIGS. 2 and 3.

In Figure 2, the BS-5YNC signal is transmitted from the base station at t
.

It is sent at a cycle of When the B5-8YNC signal is detected by the BS-5YNC detection circuit 3 of FIG. 1, the first switch means 10 (via the delay circuit 16 and then the flip-flop circuit 14) is turned off. As a result.

First receiver 11. The power of the first transmitter 13 is turned off. By the timer circuit 15 of FIG.

In FIG. 2, after t2, the clip-flop circuit 14 resets! − becomes. Therefore, the first receiver 11 and the first transmitter 13
is performing battery saving operation with BS off (power on) tl and BS on (power off) t2. In this case, in order to increase the battery saving effect, 1.
(Set forth in 12. Similarly.

Upon receiving the BS-5YNC signal from the base station, the first
After being delayed by t3 in FIG. 2 by the delay circuit 26 in the figure,
As a result, the flip-flop circuit 24 is
switch means 20 of the second receiver 21 . The power supply from the power supply 6 to the second transmitter 23 is turned off. The timer circuit 25 detects the BS-5YNC signal and resets the flip-flop 7og circuit after a time t4, and as a result turns on the switch means 20 of the tube 2 and switches the second receiver 21 and the second transmitter. The power supply from the power supply 6 of 23^ is turned on. Therefore, the second receiver 21. The second transmitter 23 is powered on (BS off) for a period of (1, +13), and is powered off (BS on) for a period of (14-1,).

FIG. 3 shows the time relationship between the operations of the first switch means 10 and the second switch means 20.

The first switch means 10 is turned on for a time tl.

During this time, the signal from the base station is transmitted to the first receiver 11. The signal is relayed to the lower station via the first transmitter 13. or.

The period tl is the time during which the base station sends an incoming call signal when calling a slave station. The delay circuit 16 of FIG. 1 is used to delay the time at which the first switch means 10 turns off by t so that the US-5YNC signal from the base station is correctly sent to the lower station.

td<t, (t3. When the base station calls the slave station, the response signal from the slave station is -1,
) is received at the relay station. Therefore, the twentieth switch means 20 is not turned on for a period of y (t, +t3) in this embodiment, and the second receiver 21 . second transmitter 2
3 from the power source 6. In Fig. 3, t is the period after the slave station receives the incoming call signal from the base station.
This is the processing time until the response signal is sent. In Figure 3 (
t, +t5) is equivalent to the conventional 'off period in FIG. In addition, in FIG. 3, since the timing of the relay station relaying the incoming call signal and the timing of relaying the response signal from the slave station are different, the ON time t of the first switch means 10 is different.

is the on-time of the second switch means 20 (11+13)
It gets smaller.

Further, as shown in the timing of the second switch means 20' in FIG. 3, the on period of the second switch means 20 is equal to the first
By changing the set value of the timer circuit 25 shown in the figure, the time can be shortened, and power consumption can be more effectively reduced.

〔Effect of the invention〕

As explained above, according to the present invention, the wireless relay device of the relay station turns on/off the supply of power to the first receiver and the first transmitter for relaying signals from the base station. The operations of switching on and off the power to the second receiver and the second transmitter for relaying signals from the lower station are performed by mutually independent switching means, and furthermore, the base station By making the time for supplying power to the first receiver and the first transmitter for relaying signals from the base station to only the time necessary for transmitting the signal from the base station to the slave station.

This has the advantage that power consumption can be more effectively reduced by the puff f IJ-saving operation.

[Brief explanation of drawings]

1 is a block diagram of a wireless relay device according to an embodiment of the present invention, FIG. 2 is a time chart for explaining the operation of the wireless relay device of FIG. 1, and FIG. 3 is a block diagram of a wireless relay device according to an embodiment of the invention. FIG. 1X4 is a time chart for explaining the operation of the conventional switch means 10 and the second switch means 20. FIG. 1... Antenna, 2... Antenna duplexer, 3.-B
S-flop circuit, 25-... timer circuit, 26-
...Delay circuit. 1st centroid 3rd figure 4th figure

Claims (1)

[Claims] 1. A base station, a plurality of relay stations that relay communication signals transmitted and received by the base station, and a plurality of slave stations that communicate with the base station via the plurality of relay stations, The base station periodically sends out a battery saving synchronization signal as a transmission signal, and the relay station and the slave station perform a battery saving operation based on the battery saving synchronization signal. In the wireless relay device provided in each relay station, there is a detecting means for receiving and detecting the battery saving synchronization signal, and when the detecting means receives the battery saving synchronization signal, for relaying the signal from the base station. a first switch means for turning off the power supplied to the necessary first device; and a signal from the slave station or a lower relay station after a certain period of time after the first switch means is turned off. A wireless relay device comprising: second switch means for turning off power supplied to a second device necessary for relaying.