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System suitable for analysis control of AU/TU pointer

A pointer and pointer-type technology, which is applied in time-division multiplexing systems, multiplexing system selection devices, transmission systems, etc., can solve problems such as poor troubleshooting, waste of device resources, and slow speed of pointer resolution. Achieve the effect of improving efficiency, increasing work speed and saving resources

Active Publication Date: 2011-09-21
LIUZHOU DADI TELECOMM EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, device resources are wasted, and the speed of pointer parsing is also slow, and it is not easy to troubleshoot when encountering problems.

Method used

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  • System suitable for analysis control of AU/TU pointer
  • System suitable for analysis control of AU/TU pointer
  • System suitable for analysis control of AU/TU pointer

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0028] See attached figure 1 , a system applicable to AU / TU pointer resolution control, characterized in that it comprises:

[0029] Pointer analysis state machine (Pointer intepretation FSM) sub-block includes: pointer type state machine, detection I / D bit inversion module, described pointer type state machine is used for judging the type ptrv_type of output state indication according to current pointer value c_ptrbyte, so The above-mentioned status indication types include: normal status indication normal_p, new pointer indication ndf_en, alarm indication ais_ind, pointer positive adjustment indication inc_ind, pointer negative adjustment indication dec_ind, pointer adjustment invalid indication invlid, and the detection I / D bit inversion module is used for Indicates the adjustment state type of the pointer. details as follows:

[0030] When judging that c_ptrbyte=all 1, then the type ptrv_type of state indication is warning state indication ais_ind, otherwise the type ptr...

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PUM

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Abstract

The invention discloses a system suitable for the analysis control of an AU / TU pointer, which comprises the sub-block of a pointer analysis state machine, a pointer type state machine and an I / D bit inversion detection module, wherein the pointer type state machine is used for judging and outputting the type of state indication according to the current pointer value; the I / D bit inversion detection module is used for indicating the adjustment indication type of the pointer; the pointer analysis LOP / AIS / NORMAL state machine sub-block uses the pointer type which is generated by the pointer analysis state machine as the basis to carry out the state skip and output pointer loss state indication and alarm state indication; the initial state in the resetting course is used as the loss state of the pointer; and the pointer value updating sub-block updates the value of the pointer and outputs positive adjustment indication signals, negative adjustment indication signals and new pointer adjustment indication signals according to the positive and negative adjustment indication and new data pointer adjustment indication which are generated by the pointer analysis state machine. The system disclosed by the invention solves the dispersity of the existing pointer analysis treatment of an SDH (synchronous digital hierarchy).

Description

technical field [0001] The invention relates to the field of SDH optical network communication, in particular to a system suitable for analyzing and controlling AU / TU pointers. Background technique [0002] In the SDH optical network communication technology, whether it is a device or a test instrument, there is a very critical process, which is the processing of AU and TU pointers, and it is used many times in many places. The pointer mechanism is a theoretical basis for the SDH system to realize synchronous multiplexing transmission. The concept of pointer introduced in SDH is aimed at phase synchronization. Specifically, it is used to deal with the phase difference between clocks, including a small amount of frequency check. There are many factors affecting the frequency and phase of the clock, and there is a lot of randomness, so the pointer processing must be able to dynamically eliminate the influence of the phase difference between the clocks. [0003] Pointer analy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J3/06H04J3/08H04L12/24H04B10/08H04Q11/00
Inventor 韦国英王天夏刘钧锴
Owner LIUZHOU DADI TELECOMM EQUIP
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