JPH02223231A - Wireless relay control system - Google Patents

Abstract

PURPOSE:To perform appropriate relay control by performing relay control selectively based on the combination of an equipment code to judge the coincidence of equipment, an addition code to judge the necessity of relay, and an identification code to represent the requirement of the relay regardless of the addition code. CONSTITUTION:The addition code to judge the necessity of the relay, the identification code to represent the requirement of the relay regardless of the addition code, and a means 34 to perform the relay control selectively corresponding to the combination with the identification code are provided. Since the addition code to judge the necessity of the relay can be set at a repeater 3, the relay control can be omitted when it is judged that no relay is required by the addition code even when the equipment codes coincide with each other. Thereby, the appropriate relay control can be performed even at a state where a transmitter 2 set at a fixed state and the transmitter 2 set at a mobile state are used in parallel.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention provides a method for disposing a repeater between a wireless transmitter and a receiver, receiving a transmitted signal at the repeater, and transmitting the received signal. It relates to a control method for a wireless relay system that expands the usable range between a transmitter and a receiver by retransmitting, and is used in fields such as wireless simple paging systems and home security systems. It is something that will be done.

[Prior Art] Conventionally, in this type of wireless relay system, a device code for identifying each device is registered in advance, and the device code is included in the transmission signal, so that the device on the transmitting side is A control method has been proposed in which relay is performed only when the code and the device code on the receiving side match.

[Problem to be Solved by the Invention] By the way, if the location of the transmitter and the relay route are clearly determined, the relay device can receive signals from the preceding relay device or transmitter along the relay route. However, in order to realize relaying when the transmitter's location cannot be specified, it is necessary to transmit the signal to the subsequent repeater or receiver along the relay route. It is necessary to have a function to relay transmitter information. in this way,
When a fixed transmitter and a mobile transmitter are used together, it is necessary to change the relay control method according to the device code of each transmitter.

The present invention has been made in view of these points, and its purpose is to provide a wireless communication system that allows proper relay control even when a fixed transmitter and a mobile transmitter are used together. The purpose of the present invention is to provide a relay control method.

[Means for Solving the Problems] In order to solve the above problems, the present invention receives a wireless signal transmitted from a transmitter, and matches the device code of the transmitter with its own device code. In a wireless relay device that retransmits a wireless signal received by a receiver or another relay device when the wireless signal is received by a receiver or another relay device, an additional code '' is used to determine whether or not relaying is necessary, and whether relaying is required regardless of the additional code. The present invention is characterized by comprising means for selectively performing relay control according to a combination of the identification code shown and the device code.

Note that when registering device codes and additional codes in the repeater, if the repeater is equipped with a means to determine whether or not registration is necessary according to the combination of the already registered device code and additional code, it is possible to register the same type of code. This is more preferable because it prevents double registration.

[Operation] According to the present invention, an additional code for determining whether or not relaying is necessary can be set in the repeater, so even if the device codes match, the additional code indicates that relaying is not necessary. If it is determined not to do so, relay control can be omitted. Therefore, for a repeater existing on a specific relay route connecting a fixed transmitter and receiver, an additional code indicating that relaying is required is set corresponding to the equipment code of the transmitter, and other By setting an additional code for medium *i that indicates that no relay is required, corresponding to the equipment code of the transmitter, it is possible to operate only the relays on a specific relay route. can. In addition, regardless of the additional code, if the device codes match, an identification code can be set on the repeater to indicate that relaying is required. If an identification code is set corresponding to the code, no matter which repeater a moving transmitter passes near, the 1i machine among them can be operated.

[Example] Figure 4 is a schematic configuration diagram of a wireless relay system to which the present invention is applied. In Figure 4, 1a and 1b are fixed transmitters, and 2a and 2b are mobile transmitters. It is. 3 ao and 3 al are relay machines existing on the relay route between the transmitter 1a and the receiver 4. 3bo.

3b1 is a relay machine existing on the relay route between the transmitter 1b and the receiver 4. The wireless signal from the mobile transmitter 2a is simultaneously received by two relays 13a, 3a+. The wireless signals from the other transmitters 1a or lb, 2b are sent to one repeater 3a+ or 3, respectively.
It is being received on b+.

FIG. 5 shows the internal circuit configuration of each repeater.

This repeater 3 includes an internal power supply circuit 31 that supplies power for driving, and a receiving antenna 32 that is necessary for receiving wireless signals.
a, a high frequency amplification unit 32 that amplifies the wireless signal;
A signal demodulation unit 33 extracts necessary information from a high-frequency amplified wireless signal, a relay control unit 34 processes information necessary for relay control, a carrier detection unit 35 detects the presence and strength of a wireless signal, A signal modulation unit 36 that converts a signal into a high frequency signal, a high frequency amplification unit 37 that amplifies this high frequency signal to a level suitable for transmission, a transmission antenna control unit 38 that performs control to send the amplified high frequency signal to the antenna, It consists of transmitting antennas 38a and 38b for emitting high-frequency signals as radio waves, and three operating state setting sections for setting various operating conditions. Operating state setting section 3
9 is provided with a code setting switch 39m, a mode setting switch 39b, and a code registrability setting switch 39c. The code setting switch 39a is a switch for setting a position code and a device code indicating the distance relationship with the receiver. The mode setting switch 39b is not directly related to the gist of the present invention. The code registration method setting switch 39c is a switch for selecting whether code registration is performed using the position code method or the identification code method. Note that the relay control unit 34 includes a storage device for temporarily storing received signals and a clock device for measuring elapsed time. On the other hand, the transmitter 2 has a switch 21 according to the purpose.
．． 22, and when the switch 21 or 22 is pressed, a wireless signal in a predetermined format is transmitted.

By the way, it is necessary to change the relay control method depending on whether the location of the transmitter and the relay route are clearly determined and the case where the location of the transmitter is unspecified but the relay route is almost determined. In other words, if the location of the transmitter and the relay route are clearly determined, it is desirable to perform relay control with the minimum number of relays necessary, but if the location of the transmitter is unspecified, It is desirable to allow repeated relays between repeaters to increase the reliability of relaying.In this way, when using at least two or more relay control methods together, it is desirable to allow repeated relays between repeaters. It is preferable to adopt the control method of the present invention that selects whether or not to relay according to the device code, additional code, and identification code registered in the device 3. This code indicates that it is the #1 aircraft on the relay route, and consists of, for example, 5-bit digital data. The additional code is, for example, a code used to determine whether relaying is necessary based on the distance relationship up to the receiver,
For example, it consists of 2-bit digital data. The identification code is a code set when relaying should be performed unconditionally if the device code matches even if the additional code does not satisfy a predetermined condition, and is made of, for example, 1-bit digital data. By using these device codes together with additional codes and identification codes, whether the relay route is specified or unspecified, the need for signal relay can be determined appropriately for each #1 device. This makes it possible to perform relay control that achieves both quickness and reliability of relay. Hereinafter, the relay control method of the present invention will be explained using specific examples.

FIG. 1 is a flowchart 1 showing a control operation of a wireless repeater using both an additional code and an identification code. In the figure, reception processing is performed in #10, and presence or absence of a received signal is determined in #20. When it is determined in #20 that there is no received signal, the process returns to #10 and the reception process is repeated. When it is determined in #20 that there is a received signal, #
At 30, the first code registration table is searched and the device code and additional code are compared. Here, the first code registration table consists of only device codes and additional codes, and an example of its registration is shown in Table 1.

As a result of the table 1 comparison, if a corresponding code is found, the process moves from the determination process in #40 to #50, where the data manipulation of the device code and additional code is performed, and the transmission process is performed in #90.

As a result of the verification, if there is no corresponding code, the process moves from the determination process #40 to #60, the second code registration table is searched, and only the device code is verified. Here, the second code registration table consists of a device code, a blank additional code, and an identification code, and an example of its registration is shown in Table 2.

As a result of the table 2 comparison, if there is no corresponding code, the process returns from the determination process in #70 to #10 and the reception process is repeated.

If there is a corresponding code, proceed to #80 from the determination process of #70, perform data manipulation of the device code and additional code,
Transmission processing is performed in #90. After completing the transmission process in #9o, the process returns to #10 and the reception process is repeated.

In this manner, in the relay control shown in FIG. 1, if no identification code is set, signal relay is performed only when the device code and additional code match. Thus, for example, a stationary transmitter 1a.

If used to relay signals from 1b, it is possible to secure a specific relay route and prevent relays other than the specific relay route from relaying signals, reducing redundant signal relays and can reduce the chances of collision. On the other hand, when identification codes are set, if the device codes match, signal relay is performed even if the additional codes do not match. Therefore, for example, if it is used to relay signals from transmitters 2a and 2b that are in a moving state and whose positions are not constant, relays other than those on a specific relay route will also relay signals, so no matter where the transmitters are located, As is clear from the explanation of 0 or more that can reliably relay signals, Table 1 above mainly includes fixed-state transmitters L a
, 1 b equipment code and its transmitter 1 a, 1
It is sufficient to register the additional code corresponding to the relay route to receiver 4 corresponding to transmitter 4. Table 2 mainly shows the equipment codes of transmitters 2a and 2b in the moving state and the equipment code. If they match, an identification code indicating that the signal will be relayed may be registered.

FIG. 2 is a flowchart showing a code registration method for using both an additional code and an identification code. In the figure, in #110, the state of the code registration setting switch 39c is read, and in #120, it is determined whether the code registration method is the additional code method or the identification code method. If the code registration method is the additional code method, the process moves from #120 to #130, and the device code and additional code are registered as shown in Table 1. If the code registration method is the identification code method, #
The process moves from #120 to #140, and the device code and identification code are registered as shown in Table 2.

Although the device code and the additional code may be set by the code setting switch 39a, it is more convenient to set them automatically based on data received from the transmitter because the labor for code setting can be saved. In addition, when the identification code method is selected, the identification code is automatically set to 0.For example, in the received data or input data, if the device code is 11100 and the additional code is 00,
The equipment code is 1 when the additive code method is selected.
1100, the additional code is set to OO, the identification code is not set, and when the identification code method is selected, the equipment code is set to 11100,
The additional code will be left blank and the identification code will be automatically set.

FIG. 3 is a flowchart showing the control operation of the repeater to prevent double registration when registering a device code and an additional code, and shows the process #130 in FIG. 2 in detail. First, in '#132, it is determined whether or not a device code is registered.

If the device code included in the received data or input data is not registered in the repeater 3, #132 to #13
4 to register a new device code. On the other hand, if the same device code has already been registered in repeater 3, the process moves from #132 to #136, and the additional code included in the received data or input data is matched with the already registered additional code. Compare size. If the newly input additional code is larger than the already registered additional code, the process moves from #136 to #138 and the already registered additional code is replaced with the newly input additional code. replace. If the newly input additional code is smaller than the already registered additional code, or if the two are equal, the additional code will not be updated. If the additional code is controlled in this way, the priority code will be automatically updated when the code is registered. If a high-priority code is registered, even if a low-priority code is entered, both will not be registered twice, and a specific route for relaying can be secured, allowing repeating between repeaters. Relays can be prevented.

Although the explanations in Figures 1 to 3 are based on the assumption that the repeater is controlled by software, it goes without saying that the repeater may also be controlled by hardware. For example, it may be an optical signal (including infrared rays), a sonic signal (including ultrasonic waves), or a line of magnetic force.

[Effects of the Invention] According to the present invention, as described above, a device code for determining whether the devices match, an additional code for determining whether relaying is necessary, and an additional code regardless of the additional code. Since relay control is performed selectively in combination with an identification code indicating that relay is required, appropriate relay control is achieved even in a wireless relay system where fixed transmitters and mobile transmitters coexist. The effect is that it can be done.

In addition, middle school I! If the configuration is configured so that when registering a device code and an additional code in the machine, the necessity of registration is determined according to the combination of the already registered device code and additional code, then the same type of code will not be registered twice. This has the effect that it is possible to prevent this, reduce storage capacity, and also shorten processing time for code verification during relay control.

[Brief explanation of the drawing]

1 to 3 are flowcharts for explaining the operation of the present invention, FIG. 4 is a schematic configuration diagram of a wireless relay system to which the present invention is applied, and FIG. 5 shows the internal configuration of a repeater used in the same. It is a block diagram. 1a, 1b, 2a, 2b are transmitters, 3ao, 3a
+, 3bo, and 3b are repeaters, and 4 is a receiver.

Claims (2)

[Claims] (1) Receive a wireless signal transmitted from a transmitter,
An additional code for determining whether relaying is necessary in a wireless relay device that retransmits a wireless signal received by a receiver or another relay device when the transmitter's device code and its own device code match. and an identification code indicating that relaying is required regardless of the additional code, and means for selectively controlling the relay according to a combination of the device code. (2) When registering a device code and an additional code in the repeater, the repeater is equipped with a means for determining whether registration is necessary according to the combination of the already registered device code and additional code. The wireless relay control system according to claim 1.