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A method for transmitting data, a decoding end, and an encoding end

A technology for data transmission and decoding, which is used in transmission systems, digital transmission systems, and error prevention to reduce decoding errors and save storage capacity and bandwidth.

Active Publication Date: 2018-01-02
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The embodiment of the present invention provides a data transmission method, aiming to solve the problem of how to save the storage space and storage bandwidth of the encoding end and the decoding end

Method used

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  • A method for transmitting data, a decoding end, and an encoding end
  • A method for transmitting data, a decoding end, and an encoding end
  • A method for transmitting data, a decoding end, and an encoding end

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Embodiment Construction

[0063] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0064] figure 1 It is a flowchart of a data transmission method provided by an embodiment of the present invention. Such as figure 1 As shown, the method includes:

[0065] S101. The encoding end segments the data to obtain segmented data segments, and calculates the fingerprint FP of the data segment;

[0066] Specifically, refer to figure 2 , figure 2 It is a schematic diagram of a data transmission method provided by an embodiment of the present invention...

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Abstract

Embodiments of the present invention provide a method for transmitting data, an encoding end, and a decoding end. In the method, the encoding end segments the data to obtain segmented data segments, and calculates the fingerprint FP of the data segment; when the FP Does not exist, request the free address of the data segment in the decoder data segment Chunk dictionary; store the FP of the data segment and the free address of the data segment in the FP dictionary, and store the data segment in the temporary cache area; the idle address of the data segment and the data segment are encoded, and the encoded result is sent to the decoding end, thereby realizing that the encoding end fully controls the FP dictionary of the decoding end, ensuring that the FP dictionaries at both ends are fully synchronized, reducing Decoding errors caused by dictionary inconsistency; the Chunk dictionary is saved at the encoding end, and at the same time, the embodiment of the present invention saves the FP dictionary at the decoding end, further saving storage capacity and bandwidth.

Description

technical field [0001] The present invention relates to the communication field, in particular to a data transmission method, a decoding end, and an encoding end. Background technique [0002] The basic principle of Data redundancy elimination (DRE) is to find duplicate data patterns from the traffic, replace the duplicate data with tags, and restore the duplicate data at the receiving end. Since the length of the label is much smaller than the length of the repeated data, traffic can be saved in this way. [0003] In the prior art, DRE is used in the wide area network, the data center (DC) and the branch office (BR) are connected through the wide area network (WideArea Network, WAN), and the redundancy elimination device (Redundancy Eliminate Appliance, REA) is connected between the DC, BR and WAN. between. The data sent from the DC is encoded in the REA, and the repeated data is replaced with a label. After being transmitted through the WAN, the data is decoded in the RE...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00
Inventor 张亮马克思瑞米丹尼尔
Owner HUAWEI TECH CO LTD