Time delay dynamic regulation method for tree structure covered with depth signals

Abstract

A time delay dynamic regulation method for a tree structure covered with depth signals includes the steps that each node in the tree structure obtains an optical fiber time delay value from a tree root node to the node, and the maximum optical fiber time delay value from the tree root node to a link final stage is recorded and serves as the maximum optical fiber link time delay of the whole network; the tree root node serves as a time delay regulation reference starting point, the tree root node broadcasts the maximum optical fiber link time delay of the whole network to various leaf nodes, the leaf nodes calculate the maximum optical fiber link time delay of the whole network and difference values Ta from the tree root node to optical fiber time delay values of the leaf nodes, the Ta and current set time delay values Ts of the Ta serve as difference values, if the absolute values of the difference values are 0 or less than a preset threshold value, regulation is needless, and otherwise the set time delay values are replaced by Ta from Ts. According to the method, the problem of time delay regulation in complex tree-shaped topological structure signal covering is solved, precision is high, time needed for whole network regulation is short, extendibility is high, and influences on time delay in a mode that a topological network adds or removes branches are reduced to the minimum.

Description

technical field [0001] The invention belongs to the technical field of telecommunication, and in particular relates to a time delay adjustment method adopted in signal coverage in near and far end digital repeaters connected by optical fibers. Background technique [0002] Each set of traditional digital optical fiber repeater consists of a near-end device AU and multiple remote radio equipment RRU connected by optical fiber. Each near-end includes multiple remote optical ports, and each remote optical port can drag a A cascaded radio frequency link formed by optical fiber physical connection at the two remote ends realizes open signal coverage for different distance areas; due to the characteristics of radio frequency signal coverage, there must be overlapping coverage areas of two or more RRUs in order to achieve no dead angle coverage , if delay adjustment is not performed, user terminals in this area may be unusable. Existing delay adjustment is mainly used in single-cha...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcomings and deficiencies of the prior art, aiming at signal coverage in large-area buildings, and solve the problem of time delay adjustment in signal coverage of complex tree topological structures

Images