A Method for Determining Delay Adjustment Value of Digital Repeater in Ring Network

A technology of ring networking and delay adjustment, applied in the field of communication, to achieve the effect of increasing coverage distance, reducing signal transmission delay, and reducing interference

Active Publication Date: 2020-02-14
CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Existing manufacturers mostly use manual adjustment or fixed delay adjustment, and there are no reports claiming automatic adjustment.

Method used

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  • A Method for Determining Delay Adjustment Value of Digital Repeater in Ring Network
  • A Method for Determining Delay Adjustment Value of Digital Repeater in Ring Network
  • A Method for Determining Delay Adjustment Value of Digital Repeater in Ring Network

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Embodiment Construction

[0021] The method for determining the delay adjustment value of a digital repeater in a ring network according to the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0022] The following is a best example of a method for determining the delay adjustment value of a digital repeater in a ring network according to the present invention, which does not limit the protection scope of the present invention.

[0023] figure 1 A method for determining the delay adjustment value of a digital repeater in a ring network is shown, including the following steps:

[0024] S1. Connect the near-end machine of the digital repeater and several remote machines to form a ring network;

[0025] S2. Measuring the round-trip time delay in the positive direction and the round-trip time delay in the reverse direction between the near-end machine and each remote machine;

[0026] S3. Select the signal transmission direction correspondi...

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Abstract

The invention relates to an annular networking digit repeater time delay adjusting value determination method comprising the following steps: 1, connecting a digit repeater near end unit with a plurality of far end units so as to form an annular networking; 2, measuring forward reciprocating time delay and backward reciprocating time delay between the near end unit and each far end unit; 3, selecting a signal transmission direction, corresponding to the smaller item from the group formed by the forward reciprocating time delay and backward reciprocating time delay, as the signal transmission direction; taking the half of the biggest reciprocating time delay value as the time delay value under the networking mode, and taking the difference between each repeater far end unit time delay value and the biggest time delay value as the time delay adjusting value of each far end unit.

Description

technical field [0001] The present invention relates to the communication field, and more specifically relates to a method for determining the delay adjustment value of a digital repeater in a ring network. Background technique [0002] Due to the long-distance transmission of optical cables and the introduction of digital signal processing modules, the GSM-R optical fiber digital repeater will increase the time delay between the near-end unit and the far-end unit of the digital repeater, and it is easy to cause multipath when the signals of multiple digital repeaters overlap. interference, thus affecting the communication quality of the GSM-R system. Therefore, if the digital optical fiber repeater has a delay adjustment function, proper delay adjustment can improve the communication quality, and the transmission direction with the smallest delay is selected, which is beneficial to Improve signal transmission distance and reduce signal delay. The existing digital optical f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W56/00
CPCH04W56/004H04W56/0065
Inventor 刘立海刘正自
Owner CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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