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Convergence transmission method of multi-channel E1 data with frequency deviation in SDH signals

A transmission method and data storage technology, applied in multiplex communication, time division multiplex system, electrical components, etc., to achieve the effect of great flexibility, easy understanding, and simplified implementation

Inactive Publication Date: 2007-12-12
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

[0004] The problem to be solved by the present invention is that: aiming at the technical problems existing in the prior art, the present invention provides an SDH signal that can solve the problem of converging multiple E1 signals with frequency offsets and can make adaptive adjustments according to the frequency offsets of E1 signals Convergence transmission method of multi-channel E1 data with frequency offset in STM-1

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  • Convergence transmission method of multi-channel E1 data with frequency deviation in SDH signals
  • Convergence transmission method of multi-channel E1 data with frequency deviation in SDH signals
  • Convergence transmission method of multi-channel E1 data with frequency deviation in SDH signals

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Embodiment Construction

[0041] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0042] There is the convergent transmission method of the multi-path E1 data of frequency offset in a kind of SDH signal of the present invention, and its steps are:

[0043](1), for each E1 signal, establish a first-in-first-out buffer corresponding to it, and judge the frequency deviation situation of the E1 signal for the number of data stored in each buffer and the speed of change;

[0044] (2), set up the aggregation processing module; According to the frequency deviation situation category between each E1 signal determined in the step (1) and the transmission clock, in the aggregation processing module, the buffer memory is carried out corresponding processing:

[0045] ① When there is no frequency offset between each E1 signal and the transmission clock, only the main transmission section is used to transmit data, and the numbe...

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Abstract

The invention discloses a concourse transmission method for multi-path E1 data with offset frequency in SDH signal, and the steps are: (1) builds first-in first-out buffer corresponding with every E1 signal, and judges the offset frequency of E1 signal according to the number and changing situation of stored data in every buffer; (2) builds the concourse processing module; processes the data transmission in concourse module according to the offset frequency situation in step (1) between the E1 signal and the transmission clock; (3) processes the data transmission in concourse module according to the offset frequency situation in step (1) between the E1 signals. The invention provides that it can solve the concourse problems of multi-path E1 signals with offset frequency and the concourse transmission method in multi-path E1 data with offset frequency according to the offset frequency of E1 signal to self-adaptive SDH signal STM 1.

Description

technical field [0001] The invention mainly relates to the field of optical fiber communication signal processing, in particular to a method for converging and transmitting multi-channel E1 data with frequency deviation in SDH signals. Background technique [0002] The SDH signal of TUG structure STM-1 can carry 63 channels of E1 signals. These E1 signals are mapped into the SDH frame of STM-1 by signals from different PDH equipment, and these PDH equipment may use different clock systems. Separate the E1 signal from the SDH signal of TUG structure STM-1 must go through two levels of pointer adjustment and one bit adjustment. There may be frequency deviation between these E1 signals and between the E1 signal and the sending or receiving clock. To aggregate E1 signals with frequency offset, it is first necessary to establish a transmission format that can absorb this frequency offset, and then solve a data aggregation method that adapts to this transmission format. [0003] ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J3/06
Inventor 刘纯武黄芝平张羿猛苏绍璟毕占坤
Owner NAT UNIV OF DEFENSE TECH
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