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Multi-path data transmission method and device based on partial data overlap

A data transmission method and data transmission technology, which are applied in the field of multi-path data transmission methods and devices based on partial data overlap, can solve the problems that tail data cannot arrive in time, affect smooth video playback, and have a low probability of successful transmission.

Active Publication Date: 2017-06-13
BEIJING JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The disadvantage of the above data scheduling method is: since the bandwidth of the path is a random variable that obeys the Gaussian distribution, the amount of data transmitted in one cycle of the path is also a random variable that obeys the Gaussian distribution
This will lead to a lower probability of successful transmission of data transmitted later (tail data) on a path in each cycle;
Therefore, the tail data may still not arrive in time, which will affect the smooth playback of the video

Method used

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  • Multi-path data transmission method and device based on partial data overlap
  • Multi-path data transmission method and device based on partial data overlap
  • Multi-path data transmission method and device based on partial data overlap

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Embodiment 1

[0090] The embodiment of the present invention requires the client to request a piece of data from multiple servers through multiple paths, and complete the download of the requested data within one cycle. In order to ensure that there is enough data in the cache to cope with network emergencies, you should try to ensure that the requested data download is successful within one cycle. The embodiment of the present invention stipulates that the data transmitted by each path within a cycle has the same end position and different start positions, wherein the start position is obtained under the condition of ensuring the maximum probability of successful data transmission within a cycle. This method makes the later part of the data transmitted by some paths be the first part of the data transmitted by other paths, thereby improving the probability that the tail of the transmitted data will successfully reach the client within one cycle, and ensure that the requested data download i...

Embodiment 2

[0133] This embodiment provides a multipath-based data transmission device, and its specific implementation structure is as follows Figure 5 As shown, it can specifically include the following modules:

[0134] A data location determining module 511, configured to determine that the request data of each path has the same termination location, and determine the starting location of the request data of each path according to the data transmission capability of each path;

[0135] The data request sending module 512 is configured to concurrently send a request for obtaining data through each path in the same data transmission period, and the request carries the starting position and the ending position of the requested data of each path;

[0136] The data aggregation processing module 513 is configured to aggregate the data obtained through the multiple paths in the same data transmission period.

[0137] Further, the data location determination module 511 is specifically confi...

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Abstract

The invention provides a multi-path data transmission method and device based on partial data overlap. The multi-path data transmission method based on partial data overlap mainly comprises the following steps: confirming the starting position for requesting data of each path respectively according to the data transmission capability of each path, and confirming that the requested data of each path has the same end position; sending the request of obtaining data through each path respectively in the same data transmission cycle, wherein the request carries the starting and end positions of the requested data of each path; and aggregating the data obtained through a plurality of paths within the same data transmission cycle. According to the invention, the starting position for requesting data of each path is obtained under the condition that the probability of successful data transmission in a cycle is guaranteed, and the back parts of the data transmitted by some paths are the front parts of the data transmitted by other paths, therefore, the probability that the tail part of the transmitted data successfully reaches the client in one cycle is improved.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a multi-path data transmission method and device based on partial data overlap. Background technique [0002] With the improvement of video definition, video has higher and higher demand for bandwidth, but the bandwidth of a single path can no longer meet this demand. Fortunately, the development of multi-interface technology enables the client to use multiple interfaces at the same time, realizing multi-path transmission and meeting the bandwidth requirements of high-definition video. At the same time, due to the rapid development of content distribution networks and data centers, multi-source multi-path transmission is gradually accepted and valued by people, which is an emerging development trend of multi-path transmission. [0003] The traditional multipath transmission strategy adopts the MPTCP (Multipath TCP, multipath TCP) protocol, which is a classic under...

Claims

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Application Information

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IPC IPC(8): H04L12/707H04L12/709H04L12/801H04L12/927H04L45/24H04L45/243H04L47/80
CPCH04L45/24H04L45/245H04L47/10H04L47/80
Inventor 李纯喜赵永祥张嘉欢
Owner BEIJING JIAOTONG UNIV
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