JPS5944825B2 - Signal sequence control method - Google Patents

Description

[Detailed Description of the Invention] The present invention provides the following effects when a digital signal system is adopted.
This invention relates to a signal sequence control method for connection control.

In order to make a phone call or transmit data between two points that are far apart from each other, it is necessary to perform connection control such as mutual activation, restoration, and disconnection.

For example, multiple access wireless telephones can be used to extend the subscriber line by installing a master station radio as a line concentrator at the end of the subscriber line and installing a limited number of radio lines between it and a large number of slave station radios. This applies to cases such as equations. Various signal systems have been used in the past as signal systems in such cases, but digital signal systems can also be adopted.

In digital signaling, the function of each signal is digitized into several bits, and other information bits,
If ρ is received, it is sent to the other station along with synchronization bits, a station invitation code, etc. The signal receiving station extracts signal bits from the received data, decodes them, performs appropriate internal processing, and returns a response signal. In the signal sequence described above, the connection control device selects a corresponding signal (function code) in the process of control, and executes the task of encoding the signal.

The present invention performs such signal selection and coding, that is, function code (hereinafter abbreviated as F code) creation work, and control of the inside of the device at the output stage of the corresponding signal, by using a programmer. This is an attempt to carry out the process efficiently and accurately using a specially designed connection table and its control circuit.

Hereinafter, the present invention will be explained in detail based on the drawings. FIG. 1 shows a signal format in one embodiment of the signal sequence control method of the present invention.

In the figure, 1 represents the station identification code, and 2 represents the F code. FIG. 2 shows the format of a connection control table in an embodiment of the signal sequence control system of the present invention.

This table is stored in ROM (ReadOnlyMemOry)
). P-ROM (PrO-GramableReadO
nlyMemOry) or RandOmAcces
sMemOry) or a combination thereof. In FIG. 2, 3 is a transmission F code, 4 is a reception prediction F code, and 5 is a signal sequence control bit and a system control bit. 6 indicates 60'2 address return control bits, respectively. Transmission F code 3 is activated by the own station device to start a signal sequence. Alternatively, it is sent to the other party when responding to a signal sent from the other party's device. The predicted reception F code 4 is predicted to be received when the transmission F code is sent out, and is composed of predicted reception F codes 1 to N (7)N predicted reception F codes. Signal sequence control bit and system control bit 5 {'' Information necessary for signal sequence control and system control at each stage of the signal sequence.The signal sequence control bit monitors the signal sending time. Contains control information for signal transmission frequency control 6 response signal reception monitoring and other items, and system control bits include transmitter on/off control. Transmission circuit switch on/off control. Contains control information for signaling circuit switch on/off controls and other items. Also 6
0'address restoration control bit 6 specifies the conditions for restoring the initial state of the system to the address of the word that is stored. FIG. 3 is a block diagram of a connection control circuit in an embodiment of the signal sequence control method of the present invention. This figure shows the aforementioned connection control table and its peripheral control circuits.

In Figure 3, 11-1, 11-2, ......, 1
1-N('' signal transmission request manual terminal. 12 is 0R gate.
13}'l! MASGC(MemOryAddress
SelectGateCcflt-ROller) and SPG(SetPulseGeneratOr). 14
is an AND gate. 15 is a signal reception processing ℃K flag.
16 is a reception F code register. 17 is Matsushiya. 181
1 selection gate 1.19 is a reception prediction F code selection gate controller. 20 is an encoder. 21 is a selection gate 2.
22 is a buffer register. 23 is the connection control table
24 BA0゛Address return determination circuit, 25-1, 25-2
is the receiving terminal. 26-1 and 26-2 are transmission F code output terminals. In FIG. 3, there are the following two methods for accessing the connection control table.

First, the encoder 20 encodes the internal signal transmission request functions #1 to #N generated at the terminals 11-1, . . . , 11-N. The F code corresponding to each function is converted into the memory address of the stored data. With this, the connection control table 23 may be accessed via the selection gates 2 and 21. It is also sent from the other station. The F code set in the receive F code register 16 and the predicted received F code are transmitted through the receiving end of the local station. Under the control of the reception predicted F code selection gate controller 19, selection gates 1 and 18 and matcher 1
Verify by 7. The received F code with matching logic is sent as it is to MASGC and SPGl as a memory address.
The connection control table 23 may be accessed via the selection gates 2 and 21 under the control of the connection control table 23. In this case, matching includes applying a suitable conversion to the received signal and then performing matching logic with the received predicted F code. The buffer register 22 transfers the data of the connection control table 23 addressed via the selection gates 2 and 21 to 6MASGC and S
It is temporarily accumulated by the set pulse sent from PGl3.

Regarding the sending F code. A certain pattern. For example, in the case of an all "O" pattern, it means that there is no transmission request.The signal reception processing "0K" flag 15 indicates that the reception F code is set at the receiving end and the control signal check is executed. It shows good things.

With this flag 15. According to the check timing defined by the reception predicted F code selection gate controller 19. The asynchronous connection for synchronizing the received F code with the timing system of the own station device is smoothly executed. This is effective when the data receiving circuit and the connection control circuit have different clocks. Reception predicted F code selection gate controller 191:. The selection gates 1 and 18 are controlled at regular intervals to check the received F code. However, the result of the check will be accepted. Only when signal reception processing “0K” flag 15 is set. MAS
The GC and SPG13 scan the signal sending request and the matcher output at a constant timing and output the gate control signals S1 and . A set signal S2 for the buffer register 22 is generated.

601 address return determination circuit 24. The operating status of the system. It monitors whether the conditions for returning to the initial state are met for each signal sequence indicated by the "0" address return control bit. If applicable. 60”° Address return command S3 is sent to MASGC and SPGl3.

FIGS. 4 and 5 respectively show a connection control table program method and a control signal sequence in an embodiment of the signal sequence control method of the present invention.

Based on Figures 4 and 5 below. The connection control table programming method and signal sequence control method will be explained. In Fig. 4, 31 and 33 are respectively device A.
, device B, connection Fbl leg table. 32 and 34 are buffer registers of device A and device B, respectively. In the connection control tables 31 and 33. Send each from the left F
code. Predicted reception F code 1. The predicted reception F code 2 and other bits (signal sequence control bits, etc.) are recorded. Buffer register 328 Yopi 34
In the initial state, the corresponding received predicted F code and system control information are set. now. Device A
When a signal transmission request for function #1 occurs in . This is converted to a code string a. The transmission F code A (code string p), which is the content of the connection control table 31 with this code string a as an address, is read out and sent to the buffer register 32.
is set to

That is, function #1 is converted to F code A and sent to device B. At this time, the buffer register 32 stores the received predicted F code B which is a response to the F code 1'A.
(code string q) is set at the same time. In device B, the received predicted F code A is stored in the buffer register 34 in advance.
is set. A match is detected between this and the transmitting F unit 1'A sent from the device Aη). If they match, the transmission F code B (code string q), which is the content of the connection control table 33 that uses the code string p as its memory address, is set in the buffer register 34 and sent to the device A as a response signal.

In device A. F code B sent from device B. Reception prediction F code B set in buffer register 32
Detects a match. The contents of the connection control table 31 are set in the buffer register 32 by using the code string q which is the matching output as a memory address.

In this case, since the transmitted F code is a specific pattern (for example, all 00゛), no signal is sent. A received predicted F code D and a received predicted F code H, which are predicted control signals from device B, are set. It enters a standby state in response to these signals. Next, when a signal transmission request for function #2 occurs in device B. Similarly, the encoded memory address b is converted and the contents of word 1'b of the connection control table 33 are set in the buffer register 34. The transmission F code D (code string s), which is the content of word b, is sent to device A.

When device A detects F code D by detecting a match with the contents of buffer register 32, . The code string s of this F code D is used as a memory address, and the contents of word s are set in the buffer register 32. The F code E (code string t) is sent to device B as a response signal.

When device B detects F code E, it sets the code string t of this F code E as a memory address, sets the contents of word t in the buffer register 34, and enters the standby state for F code F (code string u). Become.

Next, when signal transmission request function #3 occurs in device A. This is converted into a code string c, and the contents of word c are set in the buffer register 32. Transmission F code F
(code string u) is sent to device B. As mentioned above, device B is in standby mode with F code F. When the F code F is detected, the code string u is used as a memory address and the contents of the code F'u are set in the buffer register 34. A response signal F code G (code string v) is sent.

Since device A is in standby mode with F code G. At the same time as the F code G is detected, the contents of the word v are set in the buffer register 32 using the code string v as it is as a \memory address.

Predicted reception F code for that memory address 1. Reception prediction F
If code 2 stores a specific pattern that does not mean an F code (all 0's in a row), the device only performs internal processing without waiting for a signal. In other words, the process of connection control. At a stage where there is no need to send an F code to the other party, or at a stage where there is no need to wait for an F code from the other party, the F code is stored in advance in the area for storing the transmission F code or predicted reception F code of the corresponding address in the connection control table. All you have to do is write a specific pattern that does not mean a code (for example, all 60').As is clear from the above explanation, in the signal sequence control method of the present invention, the sending F code is directly transmitted, and the response signal of the other party is stored. Furthermore, since the receiving side does not accept signals other than the predicted received F code, it is possible to automatically check for code errors, etc. If the signal sequence is in an unexpected direction due to a code error, This has the advantage that it is possible to prevent a situation from progressing to the above state, and that the response signal can be sent extremely easily and quickly.

The present invention is particularly useful in multiple access wireless telephone systems. In addition to this, it can also be used in signal sequence control for connection control when a digital signal system is generally adopted.

[Brief explanation of drawings]

FIG. 1 and FIG. 2 are explanatory diagrams showing a signal format and a connection control table format, respectively, in one embodiment of the signal sequence control method of the present invention. FIG. 3 is a block diagram showing the configuration of a connection control circuit in an embodiment of the signal sequence control method of the present invention. Figures 4 and 5
The figures are explanatory diagrams showing a connection control table programming method and a control signal sequence in one embodiment of the signal sequence control method of the present invention, respectively. 1... Station identification code. 2...F code. 3...Transmission F code. 4... Reception F code. 5...Signal sequence control bit and system control bit. 6...601 Address return control bit. 11-1, 11-2,...
・,11-N・・・・Signal sending request manual terminal. 12
...0R gate. 13...MASGC
and SPG6l4...AND gate. 15...
...Signal reception processing 60K" flag.16...
・Receive F code register. 17...Matsutiya.
18... Selection gate 1, 19... Reception prediction F code selection gate controller. 20...
...Encoder. 21... Selection gate 2, 2
2... Buffer register. 23...Connection control table, 24...001 Address return determination circuit. 25-1, 25-2...Receiver terminal. 26-1, 26-2...Transmission F code output terminal. 31, 33...Connection control table, 3
2, 34...Buffer register.

Claims (1)

[Claims] 1. A transmission F code representing information to be transmitted to the other party, a reception predicted F code that is expected to be received from the other party when the transmission F code is transmitted, a local station signal sequence, and a system. A connection control table that stores data including control bits corresponding to the addresses, and a transmission and reception prediction that temporarily stores data read from the connection control table and that is necessary at that stage. and a buffer memory for supplying control information, and when the received transmission F code of the other party matches the reception prediction F code stored in the buffer memory, the reception prediction F code is used to control the connection. Signal sequence control characterized in that the contents of the buffer memory are rewritten by directly addressing other data including a transmission F code representing a response signal of the own station to the transmission F code of the other party stored in a table. method. 2. The signal according to claim 1, characterized in that when the transmission F code or the predicted reception F code is a signal of a specific pattern, the signal transmission or reception of the other party's signal is not executed at that stage. Sequence control method.