Single board of communication device and control method

A control method and technology of communication equipment, applied in the field of communication, can solve problems such as service disconnection and system failure, and achieve the effect of improving reliability and improving reliability

Inactive Publication Date: 2008-07-16
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prior art, such as figure 1 As shown, when the small CPU system is abnormal and the dog is not cleared on time, the watchdog circuit will reset all circuits uniformly, the entire board will be restarted, and all past services will be disconnected, resulting in system failure.

Method used

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  • Single board of communication device and control method
  • Single board of communication device and control method

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Embodiment Construction

[0015] According to the above analysis, even if the small CPU system fails, it will not affect the normal operation of the service communication channel. Therefore, it is possible to figure 2 The structure of the single board shown separates the reset operation of the CPU small system from the reset operation of the business communication channel. The single board includes: business communication channel, CPU small system, watchdog circuit, drive circuit and monitoring circuit; business communication channel Including sequentially connected input interface circuit, business processing circuit and output interface circuit; the monitoring circuit is connected to the small CPU system through the bus, the driving circuit is connected between the business communication channel and the small CPU system through the bus, and the watchdog circuit is connected through the signal line Connect CPU small system.

[0016] The working principle of this board is: the watchdog circuit only m...

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Abstract

The communication single board consists of a service communication channel, a control system, a watchdog circuit, a driving circuit and a monitoring circuit. Compares the verification message outputted from the monitoring circuit with the preset verification message to decide if they are the same; if yes, then sends a signal of enabling the driving circuit to the driving circuit in order to make it switch on the control system and the service communication channel; the watchdog circuit supervises and resets the control system; if the control system is normal, then turns on the control system and the service communication channel; otherwise, cuts off the control system and the service communication channel.

Description

technical field [0001] The invention relates to the communication field, in particular to a single board of communication equipment and a control method thereof. Background technique [0002] Communication equipment is often composed of multiple single boards connected through the backplane to work together to form an organic whole. The reliability of the single board builds the reliability of the communication equipment. Improving the reliability of the single board is an eternal topic in the design and development of communication equipment. . [0003] Such as figure 1 As shown, the basic structure of the existing communication equipment single board includes: business communication channel, control circuit and watchdog circuit. and output interface circuit, wherein: input interface circuit, business processing circuit, output interface circuit are respectively connected to the small CPU system through the bus, the small CPU system operates the business communication cha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/26G06F11/00
Inventor 李振亚项能武李腾跃
Owner HUAWEI TECH CO LTD
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