JPS6327137A - Polling control system - Google Patents

Abstract

PURPOSE:To exclude waste call operating time by interrupting a call to a slave station with no reply for a prescribed times and integrating the station again as a polling object according to polling request information received in a common reception time. CONSTITUTION:A control circuit 1 uses a list storage circuit (LSTM) 9 to obtain an identification number of the call slave station. If no reply information is obtained for a prescribed time after a polling information processing unit (PEDP) 2 sends call information to a transmission circuit TX 3, the REDP 2 sends no reply signal to the control circuit 1. The control circuit 1 receiving the signal rewrites number of no reply in pairs with an identification number set with a sent flag of the LSTM 9 by incrementing the number by 1, reads the next identification number and the number of no reply to transfer the sent flag to the identification number. When the identification number reaches the final number of the LSTM 9 through the repetitive operation above, the control circuit 1 sends a switching signal to a switching circuit SW 7 to await the input from a common reception circuit 8.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a polling control system, particularly to a polling control system in a system in which a slave station can arbitrarily stop its functions.

[Conventional technology]

Conventionally, in a polling system in which a master station has a list of slave stations, and the master station calls the slave stations one by one to obtain response information, the master station always calls the slave stations according to the list, and the slave stations If a response is not obtained within a certain period of time, the next slave station is called. Furthermore, the list of slave stations is changed manually or by specific equipment.

[Problem that the invention seeks to solve]

However, the polling control force method described above cannot be used in cases where the master station is a wireless telephone station, a large number of slave stations are each subscriber's wireless telephone terminals, and maintenance information is exchanged (via a polling system). The subscriber often turns off the power to the wireless telephone terminal and puts it in an inactive state as necessary9, and the master station periodically performs calling operations according to the list during this time, which has the drawback of wasting polling time.

An object of the present invention is to eliminate the above-mentioned drawbacks, and to eliminate the wasted calling operation time by suspending calling to a slave station that does not respond a certain number of times and incorporating it into the polling target again according to the polling request information received at the common reception time. The purpose of this invention is to provide a polling control method that eliminates the

[Means for solving problems]

In a polling system, the present invention includes a skip setting means for discontinuing calls from a slave station from which response information has not been obtained a certain number of times in succession, and a method for receiving information at a common reception time set within polling synchronization. The mobile station is configured to include a common receiving means, and a jump canceling means for including the slave station in polling from the next time according to polling request information received by the common receiving means from the slave station.

In the above configuration, when the slave station goes from a power-off state to an operating state such as when the power is turned on, the slave station detects the common reception time and sends a polling target request including its own station identification information at this time. is included in the polling again.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of an embodiment of the present invention, showing a case where a master station and a large number of slave stations perform υ polling using radio waves of the same frequency. In the figure, the master station receives the identification number of the slave station from the control circuit (hereinafter referred to as C0NT) 1, and sends the calling information by adding necessary information to the identification number to the transmitting circuit (C0NT) 1.
A polling information processing device (hereinafter referred to as PEDP) 2, which sends a response end signal to the ONT1 upon completion of receiving the response information for this call, and a no-response signal to the ONT1 when there is no response for a certain period of time; The above-mentioned TX3 and T
The output of When polling request information is obtained from the output from the switching circuit (hereinafter referred to as 5W) 7 which switches between the PEDP 2 and the shared receiving circuit (hereinafter referred to as CREC) 8 and outputs the output according to the following, the identification number 6 of the requesting slave station
A list storage circuit having an area for storing the above-mentioned CREC 8 which transmits CON'l'llC, the identification numbers of the slave stations arranged in the order of calling, the sending 2 lag indicating that calling is in progress, and the number of unanswered calls for each identification number. (hereinafter referred to as LSTM) 9, and the aforementioned C0NT1 which sequentially controls the above functional circuits. The slave stations T1 to Tn are configured to receive a call notification including their respective identification numbers, and when they determine that it is their own station, immediately transmit predetermined response information following the call notification. .

FIG. 2 is a time allocation diagram for one cycle of the baud link operation in the embodiment shown in FIG. The configuration is such that a time is provided to receive polling request information from the slave stations that were previously inactive, and the slave stations are sequentially called again.

In the above configuration, the operation shown in FIG. 1 will be explained. First, when a response end signal is given from PEDP2 to C0NT1, C0NT sets the number of unresponses for the identification number and pair of the slave station with the sending flag of I and STM9 set as M01, and then sends the next signal with the flag set. The identification number of the slave station and the number of non-responses are read and the sending flag is moved to this identification number.

Next, it is checked whether the read number of non-responses has reached the preset number, and if it has reached the preset number, the identification number of the next flagged slave station and the number of non-responses are read again from the LSTM9. Read and move the send flag to this identification number. Next, as in the previous case, the number of unanswered calls is checked, and if the number is less than the set number, this identification number is sent to PEDP2. Therefore, PEDP2 sends call information including this identification number to TX3. As a result, the slave station that received this calling information sends response information, and when PBDP2 completes reception, PEDP2 sends a response completion signal to C0NTl, so C0NTl uses LSTM9 again to identify the next calling slave station. If the number is obtained, but no response information is obtained within a certain period of time after PEDP2 sends the paging information to TX3, PEDP2 will send a CON'l'IK no response signal, so this signal is The received C0NT1 is L
Add '111' to the unresponsive count of the pair with the sending lag of STM 9 and rewrite it, read the next identification number and unanswered count, and move the sending flag to this identification number. , repeat the same operation as last time. When the identification number reaches the end of L S T M9 by repeating the above, C0NT1 sends a switching signal to SWI, and from now on CR
Wait for input from EC8. Therefore, when the secondary station is placed in a non-operational state and becomes operational, it detects the end of a series of calls and sends polling request information after a certain period of time set for each slave station, this request information is sent to SW7, CR,
Input to C0NT1 via ECs, C0NT1 is L
8'I'M9 rewrites the number of non-responses of the slave station identification number included in this request information to "01." Next, C0NT
When l sends a switching signal to SW7 and reaches the preset common reception time limit, it immediately switches back to SW7', reads the first identification number of LSTM9 and the number of non-responses), and switches the sending ring to the first one. Move to the fourth position and return to normal calling operation.

With the above operation, calls to slave stations that are inactive can be deleted, calls can only be made to slave stations that are in operation, and a response can be received, and calls to slave stations that have changed from idle to active can also be called. It will be included in the polling target from the next cycle.

In the above embodiment, C0NTl, SW7, CRE
C8 and LSTM9 were assumed to be provided independently of PE0P2, but by merging the above circuits with PEPP2, -
There is no restriction at all even if it is processed by a program all at once.

Furthermore, in order to avoid simultaneous sending of polling request information from slave stations, it is also possible to divide the slave stations into groups and set different times from detection of the end of a series of calls from the master station to transmission.

〔Effect of the invention〕

As described in detail above, the present invention has the advantage of eliminating unnecessary calls and enabling efficient communication. Especially in systems where there are a large number of slave stations, the signal propagation time to the slave stations is long, the amount of information transferred is large, and the slave stations can arbitrarily become inactive, or the slave stations may be removed at any time within the maximum range of the system.
Appropriate polling can be performed without any special effort in the system being expanded.

[Brief explanation of drawings]

FIG. 1 is a block diagram of one embodiment of the present invention, and FIG. 2 is a block diagram of an embodiment of the present invention.
FIG. 6 is a time allocation diagram of polling cycles in the illustrated embodiment; 1... Control circuit (CONT), 2...
Polling information processing device (PEDP), 7...
Switching circuit (SW), common reception circuit (CFL)
EC), 9...1st Ward Punishment 2

Claims (1)

[Claims] In a polling system in which a master station sequentially calls slave stations, and the slave stations immediately return response information upon receiving the call,
Skipping setting means for discontinuing calls from a slave station from which response information has not been obtained a certain number of times in succession; common reception means for receiving information on a common reception time set within a polling cycle; and this common reception. 1. A polling control system, characterized in that the means comprises jump cancellation means for incorporating this slave station into the next polling according to polling request information received from the slave station.