JP2004064317A - Signal transmission method and signal transmission device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that transmission of change reporting signals to other maintenance monitoring signals and another condition is blocked since the change reporting signals, which are transmitted when a certain condition occurs among the maintenance monitoring signals to be transmitted from a slave device to a master device, are continuously transmitted during the occurrence of the condition. <P>SOLUTION: The occurrence of a prescribed condition is counted by a counter. The reporting signal is transmitted only once whenever the number of its occurrence exceeds a prescribed threshold. And at the same time, a specified period of time is managed by a timer and the change reporting signal is transmitted if the condition occurs after the elapse of the specified period of time. As a result, the transmission of the signals can be controlled only when a lot of the change reporting signals occur in a short period of time and the transmission of the other maintenance monitoring signals are not blocked. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method of transmitting a maintenance monitoring signal, for example, a method of transmitting a maintenance monitoring signal of a base station device in a TDMA mobile communication system.
[0002]
[Prior art]
For example, in a base station in a TDMA mobile communication system, a lower-level device such as a packet base station modem (PMDE) transmits a maintenance monitoring signal to a higher-level device such as a packet processing module (PPM). The maintenance monitoring signal is transmitted as a change report signal transmitted when a certain condition occurs, a periodic report signal transmitted periodically at designated time intervals, and as a response to a request from a higher-level device. There is a response signal.
[0003]
[Problems to be solved by the invention]
Among the above signals, the change report signal is continuously transmitted in a large amount while a certain condition is satisfied or the condition occurs frequently, and occupies the transmission buffer. Therefore, other maintenance monitoring signals may not be transmitted. For example, if a state change B occurs in a lower-level device while a change report signal A due to a state change A is being transmitted, a change report signal B for reporting the situation to a higher-level device cannot be transmitted. Causes a mismatch in state recognition. Alternatively, when a command signal is transmitted from a higher-level device to a lower-level device during transmission of a change report signal, the lower-level device cannot transmit a response signal to the command signal, and the higher-level device may retransmit the command signal. Further, during the transmission of the change report signal, the transmission of the periodic report signal cannot be performed.
[0004]
An object of the present invention is to restrict transmission of a large amount of change report signal, thereby preventing the transmission buffer from being occupied by the signal, and transmitting a new signal when another maintenance monitoring signal or a state change occurs. An object of the present invention is to transmit a change report signal normally to prevent a state mismatch between a higher-level device and a lower-level device and to prevent a response to a command from being disabled.
[0005]
[Means for Solving the Problems]
To achieve the above object, a signal transmission method of the present invention is a method of transmitting a report signal from a lower device to a higher device, wherein the lower device detects the occurrence of a predetermined condition, and the number of occurrences of the condition is reduced to a predetermined number. When the threshold value is exceeded, a report signal is transmitted to the higher-level device, and when the condition occurs after a lapse of a predetermined time from the occurrence of the condition, a report signal is transmitted to the higher-level device. In the above method, it is preferable that the measurement of the number of occurrences of the condition is initialized and the measurement of the predetermined time is started every time the report signal is transmitted. Also, a report signal can be sent when a condition first occurs.
[0006]
A signal transmission device of the present invention includes a counter that counts the number of occurrences of a predetermined condition, a transmission unit that transmits a report signal when the count of the counter exceeds a predetermined threshold value set in the counter, The control unit includes a control unit that controls transmission and a timer that sets the counter to a state where the counter is counted up to a threshold when the timer is started and timed out in response to the timer issuance signal. Another signal transmission device of the present invention includes a counter for counting the number of occurrences of a predetermined condition, a transmission unit for transmitting a report signal when the count of the counter exceeds a predetermined threshold set in the counter, It includes a timer that starts upon receiving a signal, and a control unit that controls transmission of a report signal. The control unit receives a timeout notification from the timer, and sets a counter to a state counted up to a threshold value. Both of the above signal transmission devices can include a condition occurrence detection unit that detects occurrence of a predetermined condition. The counter can be a counter that counts down from a threshold value to zero or a counter that counts up from zero to a threshold value.
[0007]
According to the present invention, transmission of a change report signal can be restricted, the transmission buffer can be prevented from being occupied by the signal, and a state mismatch between a higher-level device and a lower-level device and an inability to respond to a command from a higher-level device can be prevented. .
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing a configuration example of the signal transmission device of the present invention. The signal transmission device includes a counter 4 for counting the number of occurrences of a predetermined state. The counter 4 can set a predetermined threshold value, and can be a counter that counts down from the threshold value to zero or a counter that counts up from zero to the threshold value. The signal transmitting device further includes a transmitting unit 5 that transmits a status change report signal when the count of the counter exceeds a predetermined threshold value set in the counter. The signal transmission device further includes a timer 2. The timer 2 is started in response to the timer issuance signal, and times out after a predetermined set time has elapsed. Further, the signal transmission device is provided with the control unit 1 for controlling the counter 4, the transmission unit 5, and the timer 2. The control unit 1 controls, for example, issuance of a timer, setting of a predetermined value (threshold or zero) to the counter 4, transmission of a report signal from the transmission unit 5, and the like.
[0009]
Note that the timer 2 can independently set the counter to zero (or a threshold) after the timeout, independently of the control of the control unit 1 of the signal transmission device. The signal transmission device can include a condition occurrence detection unit 3 that detects occurrence of a predetermined condition and sends a report signal to the control unit 1 or the counter 4. The condition occurrence detection unit 3 transmits a report signal every time a predetermined condition occurs. However, when the condition is continued as a certain state, the report signal transmission is repeated at a predetermined time interval.
[0010]
Next, a signal transmission method according to the present invention will be described with reference to FIGS. FIG. 2 shows an example of a flow in which a report signal is transmitted after the initial operation. In FIGS. 2 to 4, the counting process is a process in which the threshold value set in the counter is reduced to zero. First, after the initial operation, it is determined whether the predetermined condition A has occurred. If it is determined that the condition A has occurred, then the current count value of the counter is determined. If the counter is not zero, the count value is decremented by 1, and the process returns to the state where the occurrence of the condition A is determined again. When the counter is zero, a signal for reporting a state change is transmitted to the host device, a predetermined threshold is set in the counter as the count limit, and a timer is issued. Note that these three processes are performed at the same time or at close timing, but it is not always necessary to perform them in the order shown in FIG. When the timer is issued, the timer starts measuring a predetermined time, and returns to the state where the occurrence of the condition A is determined again.
[0011]
Therefore, in the above flow, the report signal of the occurrence of the state A from the lower device to the upper device is transmitted once each time the occurrence of the state A occurs the number of times of the threshold value. This prevents the transmission buffer from being occupied by a large number of state change report signals. Note that the above flow is applied when all the states of the generated condition A are the same, and all the signals transmitted in a large amount upon detecting the condition A have the same content, so that there is no problem even if the sounding is performed. Is done.
[0012]
FIG. 3 is an example of an operation flow on the timer side. The timer is set so as to time out in a predetermined time after the issuance of the timer. When the timer times out, the timer sets the counter to zero independently of the process of counting the occurrence of condition A. Therefore, when condition A occurs next, a report signal is sent, a count threshold is set, and a timer is issued, as shown in the flow of FIG. That is, if the occurrence of the condition A is small, the report signal is not transmitted for a long time unless the occurrence of the condition A exceeds the number of times of the threshold in the counting process. However, if the condition A occurs next every time a predetermined time elapses due to the timer processing, a report signal is sent to the host device. That is, by combining the above-described flows of FIG. 2 and FIG. 3, it is possible to limit the report signal only when the condition A occurs frequently in a short time.
[0013]
FIG. 4 shows an example of an initial operation flow when starting up the signal transmission method. When the system starts up, the counter is initially set to zero (or a threshold). Thereafter, it is determined whether the condition A has occurred. When it is determined that the condition A has occurred, a signal for reporting a state change is transmitted to the higher-level device as described above, a predetermined limit number (threshold) is set in the counter, and a timer is issued. Thereafter, a normal operation flow as shown in FIG. 2 continues. This initial operation is effective when the first condition occurrence can be reported, and after the start-up, the occurrence of the condition A is very small and it is difficult to transmit a report signal.
[0014]
【The invention's effect】
According to the present invention, when a state change report signal is transmitted from a lower device to a higher device, the occurrence of a predetermined condition is controlled by the counter and the timer as described above, so that when the state changes frequently in a short time, Only the transmission of the report signal can be restricted. For this reason, the transmission buffer is occupied by a large amount of report signals, and transmission of other maintenance monitoring signals and other state change report signals is not hindered.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an example of a signal transmission device of the present invention.
FIG. 2 is a flowchart illustrating an example of a flow of a signal transmission method according to the present invention.
FIG. 3 is a flowchart showing an example of the flow of a timer in the signal transmission method of the present invention.
FIG. 4 is a flowchart showing an example of a start-up flow in the signal transmission method of the present invention.
[Explanation of symbols]
1 control unit 2 timer 3 condition occurrence detection unit 4 counter 5 transmission unit

Claims (8)

A method of transmitting a report signal from a lower device to a higher device, detecting the occurrence of a predetermined condition in the lower device, transmitting a report signal to the higher device when the number of occurrences of the condition exceeds a predetermined threshold, And transmitting a report signal to a higher-level device when the condition occurs after a lapse of a predetermined time from the occurrence of the condition. The signal transmission method according to claim 1, wherein each time the report signal is transmitted, the measurement of the number of occurrences of the condition is initialized and the measurement of the predetermined time is started. 3. The signal transmission method according to claim 1, wherein the report signal is transmitted when the condition occurs first. A signal transmission device that reports occurrence of a predetermined condition,
A counter for counting the number of occurrences of the condition;
A transmission unit that transmits a report signal when the count number of the counter exceeds a predetermined threshold set in the counter,
A control unit that controls transmission of the report signal,
A timer that sets the counter to a state counted up to a threshold when the timer is started and timed out in response to a timer issuance signal,
A signal transmission device comprising: A signal transmission device that reports occurrence of a predetermined condition,
A counter for counting the number of occurrences of the condition;
A transmission unit that transmits a report signal when the count number of the counter exceeds a predetermined threshold set in the counter,
A timer that starts upon receiving a timer issuance signal;
And a control unit for controlling the transmission of the report signal,
The control unit receives a timeout notification from a timer, and sets the counter to a state counted up to a threshold value.
A signal transmission device characterized by the above-mentioned. The signal transmission device according to claim 4, further comprising a condition occurrence detection unit that detects occurrence of a predetermined condition. 7. The signal transmission device according to claim 4, wherein the counter is a counter that counts down from a threshold value to zero in order. 7. The signal transmission device according to claim 4, wherein the counter is a counter that counts up from zero to a threshold value in order.

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