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Adaptive clock processing method and device in packet transport network

A technology of packet transmission network and processing method, which is applied in the field of time division multiplexing service adaptive clock processing, and can solve the problems that TDM service cannot be restored to normal, and the clock cannot be locked.

Inactive Publication Date: 2011-02-23
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The specific phenomenon is that when the traffic on the network side suddenly becomes very large or very small beyond the locking range of the phase-locked loop, the adaptive clock processing module cannot lock the clock and enters an abnormal state, which is normal; but when the network side After the traffic returns to normal, the adaptive clock processing module still cannot quickly restore the normal state and lock the clock, so that the TDM service cannot be restored to normal

Method used

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  • Adaptive clock processing method and device in packet transport network
  • Adaptive clock processing method and device in packet transport network
  • Adaptive clock processing method and device in packet transport network

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Embodiment Construction

[0032] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments. The real-time examples listed below are only used to illustrate and explain the present invention, and do not constitute a limitation to the technical solution of the present invention.

[0033] The embodiment of the adaptive clock processing method in the packet transmission network provided by the present invention, its flow is as follows figure 1 shown, including steps:

[0034] 11: Monitor the adaptive clock configured as TDM service;

[0035] Here, whether the self-adaptive clock of the TDM service is normal can be monitored at intervals. The preferred way is to periodically monitor the adaptive clock of the TDM service.

[0036] 12: Perform a clock recovery operation when an abnormal adaptive clock is detected.

[0037] When the receiving end of the PTN receives the TDM service data, it will temporarily sto...

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Abstract

The invention discloses an adaptive clock processing method and an adaptive clock processing device in a packet transport network. The method comprises the following steps of: monitoring the state of a clock which is configured to be an adaptive clock of time division multiplexing (TDM) service; and performing restoration operation on the adaptive clock when state abnormity of the adaptive clock of the TDM service is detected. Through the method and the device, clock abnormity caused by network abnormity can be quickly discovered by actively monitoring the adaptive clock of the TDM service, so that the adaptive clock of the TDM service in the abnormal state can be immediately restored to further restore the TDM service.

Description

technical field [0001] The invention relates to a packet transport network (PTN, Packet Transport Network) equipment technology, in particular to a time division multiplexing (TDM, Time Division Multiplexing) service adaptive clock processing method and device in the PTN equipment. Background technique [0002] The clock recovery of the TDM service of the PTN is different from the clock recovery of the TDM service of the traditional Synchronous Digital Hierarchy (SDH, Synchronous Digital Hierarchy) transmission network and the Optical Transport Network (OTN, Optical Transport Network). [0003] In a traditional transmission network, the rate of the physical bearer frame is relatively fixed, and the receiving side only needs to divide the frame rate sent from the network side according to the fixed rate to calculate and adapt to the clock signal of the transmission system. [0004] The TDM service clock of the PTN cannot be recovered by the above method. The reason is that i...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J3/06H04L12/24
Inventor 陈露侯慧慧
Owner ZTE CORP