KR20120138488A - Optical line termination for managing reset database and the method - Google Patents

Abstract

PURPOSE: An optical transmission path terminating device including a reset history management function and method thereof are provided to manage histories for reset causes according to generated reset signals. CONSTITUTION: History management units(111,121) sense a reset signal generated from each optical transmission path terminating device. Each of the history management units detect each reset cause and reset time. Each of the history management units temporally stores the detected information. Each of storage units(115,125) updates and manages the reset history data of the reset time and the reset cause detected from the history management unit. Reset processing units(112,122) reset optical transmission paths corresponding to the generated reset signals. [Reference numerals] (100) Optical transmission path termination apparatus; (110) First MCU; (111,121) History management unit; (112,122) Reset processing unit; (113,123) Temperature sensing unit; (114,124) Control unit; (115,125) Storage unit; (120) Second MCU; (130) Power supply unit; (131) First power source unit; (132) Second power source unit

Description

Optical line termination device with reset history management function and its method {Optical Line Termination for managing reset database and the method}

The present invention relates to an optical transmission line termination device having a reset history management function, and a method thereof. In particular, when the optical transmission line termination device is reset, the optical transmission line termination device is maintained by managing the history of the reset cause and responding to the cause. And an optical transmission line termination device having a reset history management function that can be managed, and a method thereof.

Recently, as Internet users using wireless communication have rapidly increased, high-speed Internet technologies have been developed to provide faster Internet services to users.

The wireless LAN technology is a typical technology for such a high speed Internet service.

An optical communication system is a system for transmitting and receiving data based on an optical signal. The optical path terminator is a device for relaying data transmission between a server providing various data services to a subscriber through a telephone network or an internet network and optical network terminators connected to each subscriber terminal. The optical path terminator transmits the transmission data of the server to the target optical network terminator, and forms an optical signal for receiving the transmission data of the target optical network terminator.

In most network equipment, when a problem occurs with the firmware or hardware, the entire subscriber connected to the network equipment will be incapable of receiving communication services.

One way to recover from such a failure is to use a module reset command to initialize the device.

The technical problem to be solved by the present invention is to manage the history of the cause of the reset when the optical transmission line termination device is reset and to respond to the cause by the optical transmission line termination of the reset history management that can maintain and manage the optical transmission line termination device An apparatus and a method thereof are provided.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not restrictive of the invention, unless further departing from the spirit and scope of the invention as defined by the appended claims. It will be possible.

In the optical transmission line termination device including the power supply unit, the first MCU and the second MCU in accordance with the present invention for detecting the technical problem, by detecting a reset signal generated by the optical transmission line termination device to detect the reset cause and reset time A history manager for temporarily storing the data; A storage unit for updating and managing reset history data of a reset cause and a reset time detected by the history manager; It is characterized in that it comprises a reset processing unit for performing a reset in response to the generated reset signal.

According to a preferred embodiment of the present invention, a control unit for controlling the history management unit and the storage unit; It is characterized in that it further comprises a temperature sensing unit for detecting the temperature in the optical transmission line termination device and outputting a reset signal when the temperature abnormality.

The history manager may include: a watchdog reset unit configured to refresh the driving state of the optical transmission line termination device at a predetermined cycle and output a watchdog reset signal in an abnormal state; An exception reset unit configured to output a reset signal due to a software bug driving the optical transmission line terminator; A reload reset unit for outputting a reset signal by normal execution of software for driving the optical path termination device; A reset detection unit receiving a reset signal output from the watchdog reset unit, the exception reset unit, and the reload reset unit and detecting a reset cause and a reset time; It is characterized in that it comprises a temporary storage unit for temporarily storing the reset cause and the reset time detected by the reset detection unit.

Here, the reset detection unit is characterized in that the reset signal output by the abnormality of the power supply unit and the reset signal output by the transfer of the standby first MCU or second MCU is further received.

Here, the reset detection unit is characterized in that further receives a reset signal output when the temperature abnormality from the temperature detection unit.

In addition, the reset history management method of the optical transmission line termination apparatus according to the present invention comprises the steps of generating a reset signal in the system; Executing a system reset by generating the reset signal; Detecting the occurrence of the reset signal and determining a cause of the reset; Temporarily storing reset history data of the cause and time of reset; It is characterized in that it comprises the step of updating the stored reset history data.

Here, the reset signal is characterized by including a watchdog reset signal, an exception reset signal, a reload reset signal, a power failure reset signal, a transfer reset signal, and a temperature abnormal reset signal.

According to the present invention, when the optical transmission line terminator is reset, the history of the cause of the reset is managed and corresponding to the cause, the optical transmission line terminator can be maintained and managed.

1 is a view schematically showing the configuration of an optical transmission line termination device having a reset history management function according to the present invention.
2 is a diagram schematically showing a configuration of a history management unit according to the present invention.
Figure 3 is a flow chart for the reset history management method of the optical transmission line termination apparatus according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, in describing in detail the operating principle of the preferred embodiment of the present invention, if it is determined that the detailed description of the related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

The same reference numerals are used for portions having similar functions and functions throughout the drawings.

In addition, in the entire specification, when a part is referred to as being 'connected' to another part, it may be referred to as 'indirectly connected' not only with 'directly connected' . Also, to include an element does not exclude other elements unless specifically stated otherwise, but may also include other elements.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a view schematically showing the configuration of an optical transmission line termination apparatus having a reset history management function according to the present invention. As shown in FIG. 1, the optical transmission path terminator 100 having a reset history management function of the present invention includes a power supply unit 130 and a first MCU (Management Control Unit) receiving power from the power supply unit 130. ; MCU and a second MCU (110, 120), the first and second MCU is history management unit (111, 121), storage unit (115, 125), reset processing unit (112, 122), control unit (114, 124) and temperature sensing unit And (113,123).

The optical line terminal (OLT) 100 is provided with two first and second MCU (Management Control Units) (MCUs) 110 and 120 and supplies power from the power supply unit 130. Receive each of them. The first and second MCU (Management Control Unit (MCU) 110, 120) is a redundant configuration to drive any one of the two devices, the other device to maintain the drive standby state while the drive If an error occurs in the device, the device is transferred and the waiting device is driven to provide a stable system. Since the configuration of the first management control unit (MCU) 110 and the configuration of the second management control unit (MCU) 120 are the same, the first management control unit (MCU) ( The configuration of 110 will be described.

In addition, although not shown in the drawing, the optical path terminator 100 includes a necessary component for driving the optical path terminator such as a pon line card and an uplink card.

The power supply unit 130 is dually configured with a first power supply unit 131 and a second power supply unit 132 so that power is independently provided to the first and second MCU (Management Control Unit; MCU) 110, 120. When one of the first power source 131 or the second power source 132 is cut off, the other power source can stably provide power.

The history manager 111 detects the reset signal generated by the optical transmission line termination device 100, detects the cause of the reset and the reset time, and temporarily stores the reset signal.

More specifically, the reset signal may include a watchdog reset signal of an abnormal state of system monitoring, an exception reset signal due to a bug in the device operating software, a reload reset signal of normal software execution, A power fail reset signal by detecting a power supply failure, a remote switch reset signal from a waiting MCU, and a template reset above a system temperature are detected.

The storage unit 115 updates and manages reset history data of a reset cause and a reset time detected by the history manager 111. In this case, the storage 115 is preferably a flash memory.

The reset processor 112 receives a reset signal from the history manager 111 and executes the reset of the optical path terminator 100.

The controller 114 controls the history manager 111 and the storage 115. In addition, the system-wide control will be performed.

The temperature detector 113 detects a temperature in the optical transmission line termination device 100 and outputs a reset signal when the temperature is abnormal. Here, the control unit 140 sets in advance a limit value for a high temperature or a low temperature for driving the optical transmission line termination device 100, and if a temperature for the limit value is detected by the temperature sensing unit 130, a reset signal. Will print

2 is a view schematically showing the configuration of the history management unit according to the present invention. As illustrated in FIG. 2, the history manager 110 may include a watchdog reset unit 210, an exception reset unit 220, a reload reset unit 230, a reset detector 240, and a temporary storage unit 250. It includes.

The watchdog reset unit 210 refreshes an execution state of the optical transmission line terminator 100 at a predetermined cycle, and outputs a watchdog reset signal in an abnormal state. That is, the watchdog executes a health check through a host interface existing between the main board and the uplink module, and thereafter, there is no response from the firmware installed in each module after the health check. Usually a software reset is performed for all modules in the communication device.

The exception reset unit 220 outputs a reset signal of an abnormal state caused by a software bug that executes the optical path terminator 100.

The reload reset unit 230 outputs a reset signal by normal execution of software executing the optical path terminator 100. That is, a reboot, which is a normal reset due to software installation of an OS (Operate system), is executed.

The reset detector 240 receives a reset signal output from the watchdog reset unit 210, the exception reset unit 220, and the reload reset unit 230 to detect a reset cause and a reset time. In addition, the reset detection unit 240 receives the reset signal output by the abnormality of the power supply unit 130 and the reset signal output by the transfer of the first MCU or the second MCU in standby. The reset detector 240 further receives a reset signal output when the temperature is detected by the temperature detector 130. That is, the reset detector 240 receives both a reset signal due to software and a reset signal due to hardware generated in the optical transmission line terminator 100.

The temporary storage unit 250 temporarily stores the reset cause and reset time detected by the reset detection unit 240. That is, while the system reset is executed by the reset processor 120, reset history data such as a reset cause and a reset time of the reset signal output from the reset detector 240 are temporarily stored. Here, the reset history data stored in the temporary storage unit 250 is updated in the storage unit 150 after the reset is executed.

3 is a flowchart illustrating a reset history management method of an optical transmission line termination device according to the present invention. As shown in FIG. 3, in the reset history management method of the optical transmission line termination device according to the present invention, a step of generating a reset signal in a system that is an optical transmission line termination device is first performed (S301). Here, the reset signal may include a watchdog reset signal of an abnormal state of system monitoring, an exception reset signal due to a bug in the device operating software, a reload reset signal of normal software execution, and power supply. A power fail reset signal due to an abnormality detection, a remote transfer reset signal from a waiting first MCU or a second MCU, and a reset signal above a system temperature are generated.

Then, the step of executing a system reset by the reset signal generation is performed (S302). That is, the reset signal is received from the history manager to reset the optical path terminator.

Subsequently, the generation of the reset signal is determined by detecting the occurrence of the reset signal (S303). That is, the generated reset signal includes a watchdog reset signal of an abnormal state of system monitoring, an exception reset signal due to a bug in the device operating software, a reload reset signal of normal software execution, It is determined whether the power failure reset signal by the power supply failure detection, the remote transfer reset signal from the waiting MCU, or the templature reset signal above the system temperature.

Then, the step of temporarily storing the reset history data of the cause of reset and the time of reset occurs is performed (S304).

Then, updating the stored reset history data is performed (S305). Here, by updating the reset history data of the reset cause and the reset time, all the reset history data on which the system reset is executed are stored, so that the causes of the system reset can be managed and coped with later.

Although the invention and its various functional components have been described in particular embodiments, it should be understood that the invention can be implemented in hardware, software, firmware, middleware, or a combination thereof. If implemented in software, the elements of the invention are instructions / code segments for performing the necessary tasks. The program or code segments may be stored in a machine readable medium, such as a processor readable medium, a computer program product, or via a transmission medium or communication link by a computer data signal embodied in a carrier wave or a signal modulated by a carrier. Can be sent. Machine readable media or processor readable media may include any medium that can store or transmit information in a form readable and executable by a machine (eg, processor, computer, etc.).

While the present invention has been particularly shown and described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, Of course, this is possible. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined by the equivalents as well as the claims that follow.

Description of the Related Art
100 --- Optical line terminator 110, 120 --- 1st, 2nd MCU
111 --- History management unit 112-Reset processing unit 113 --- Temperature sensing unit 114 --- Control unit 115 --- Storage unit 130 --- Power supply unit
210 --- Watchdog reset unit 220 --- Exceptional reset unit 230 --- Reload reset unit 240 --- Reset detection unit 250 --- Temporary storage unit

Claims (7)

In the optical transmission line termination device comprising a power supply, a first MCU and a second MCU,
A history manager which detects the reset signal generated by the optical transmission line termination device and temporarily stores the reset cause and the reset time;
A storage unit for updating and managing reset history data of a reset cause and a reset time detected by the history manager;
And a reset processing unit for performing a reset in response to the generated reset signal.
The method of claim 1,
A controller for controlling the history manager and the storage; And a temperature sensing unit for detecting a temperature in the optical transmission line termination device and outputting a reset signal when the temperature abnormality occurs.
The method of claim 1,
The history management unit
A watchdog reset unit for refreshing an execution state of the optical transmission line termination device at a predetermined cycle and outputting a watchdog reset signal in an abnormal state;
An exception reset unit configured to output a reset signal due to a software bug driving the optical transmission line terminator;
A reload reset unit for outputting a reset signal by normal execution of software for driving the optical path termination device;
A reset detection unit receiving a reset signal output from the watchdog reset unit, the exception reset unit, and the reload reset unit and detecting a reset cause and a reset time;
And a temporary storage unit for temporarily storing the reset cause and the reset time detected by the reset detection unit.
The method of claim 3,
The reset detecting unit further receives a reset signal output by an abnormality of the power supply unit and a reset signal output by the transfer of the first MCU or the second MCU that is in standby. .
The method according to any one of claims 2 to 4,
And the reset detection unit further receives a reset signal output when the temperature is detected by the temperature detection unit.
Generating a reset signal in the system;
Executing a system reset by generating the reset signal;
Detecting the occurrence of the reset signal and determining a cause of the reset;
Temporarily storing reset history data of the cause and time of reset;
And updating the stored reset history data.
The method according to claim 6,
The reset signal includes a watchdog reset signal, an exception reset signal, a reload reset signal, a power failure reset signal, a transfer reset signal, and a temperature abnormal reset signal.

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