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Method and system for on-demand file repair

A file and data sink technology, applied in the transmission system, storage system, digital transmission system, etc., can solve the problems of TCP and similar protocols that are not effective, high packet loss rate, network congestion, etc.

Active Publication Date: 2020-06-16
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Packet transmission on the move causing high packet loss
Data loss can be high even on the best wireless link, so the network becomes clogged with error correction traffic
Therefore, TCP and similar protocols are not as effective in these environments

Method used

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  • Method and system for on-demand file repair
  • Method and system for on-demand file repair
  • Method and system for on-demand file repair

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Embodiment Construction

[0015] The construction, making and use of the presently preferred embodiments are discussed in detail hereinafter. It should be appreciated, however, that the present invention provides many applicable inventive concepts that can be embodied in a wide variety of specific contexts. The specific embodiments discussed are merely illustrative of specific ways to make and use the invention, and do not limit the scope of the invention.

[0016] Current file transfer protocols have pros and cons. The Transmission Control Protocol (Transfer Control Protocol, TCP) needs to perform cumulative acknowledgment (acknowledgment, ACK) on received data packets. In selective ACK (selective ACK, SACK), the receiver sends an ACK for each received data segment, while the source sends unencoded missing data packets. In the case of using the User Datagram Protocol (UDP), there is no feedback channel for data packet retransmission. In the case of reliable UDP, there is a feedback channel for rese...

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Abstract

The invention discloses a system and a method for realizing an on-demand file repair protocol. In the protocol, a data source sends all data packets in a data file to a data sink. Then, the data source sends an indication to the data sink that sending of all the data packets is completed. If a data packet is lost, a request to retransmit the lost data packet is received from the data sink. Then, the data source sends the fountain code of the lost data packet to the data sink.

Description

[0001] This application claims prior U.S. Nonprovisional Application No. 14 / 855,181, filed September 15, 2015, entitled "Method and System for an On-Demand File Repair" Priority to application claiming priority to Invention Serial No. 62 / 107,819, filed January 26, 2015, entitled "Method and System for an On-Demand File Repair Protocol" Priority of the earlier application to the United States Provisional Application, both of which are hereby incorporated by reference in their entirety. technical field [0002] The present invention relates to a method and system for file restoration, and in a specific embodiment, relates to a method and system for on-demand file restoration. Background technique [0003] Data transmission may be unreliable. For larger files, some data will almost certainly be lost. This problem is especially serious in wireless transmission. To solve this problem, packet transmission was studied. In packet transfers, files are broken down into small packe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F12/00
CPCH03M13/3761H04L1/1819H04L1/1829H04L1/1896H04L1/1848H04L67/06H04L43/0829
Inventor 恩科 敦·道
Owner HUAWEI TECH CO LTD
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