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Method, transmitting/receiving device and system against lost packet in data transmission process

A data transmission and data packet technology, applied in the fields of transceiver devices and data packet transmission methods, can solve problems such as inability to recover from continuous packet loss, and achieve the effects of good resistance and low cost.

Active Publication Date: 2008-02-06
TENCENT TECH (SHENZHEN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In view of this, one of the purposes of the present invention is to provide a method for resisting packet loss during data transmission, which can solve the technical problem that continuous packet loss cannot be recovered at the receiving end

Method used

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  • Method, transmitting/receiving device and system against lost packet in data transmission process

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Embodiment Construction

[0063] The core idea of ​​the present invention is: carry out surplus interleaving grouping to the original data packet, and add redundant packet in each grouping, when the receiving end finds packet loss, can pass all data packets received in the corresponding grouping and redundant packet package to recover lost packets. In this way, packet loss of original data packets can be resisted to a large extent.

[0064] Specifically, the large original data block transmitted by the upper layer application, such as the entire image data, is divided into small sequentially numbered original data packets, and the size of the original data packet is set according to the MTU. After packetization, the original data packet sequence is interleaved and grouped, and redundant packets are added. At the receiving end, the original data packets in the received original data packet group are reordered, and if the original data packets are found to be lost, the lost original data packets are rec...

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Abstract

The present invention relates to a data group transmission art, in particular to a sending and receiving device which can prevent the data lose in the transmission process. The present invention can solve the art problems that the receiving end can not recover the data when the data bag is lost. The present invention is characterized in that the sending end will group the prior data bag order crossingly and form the redundancy bag for each group; the receiving end will order the prior data bag again, if the prior data bag is lost the redundancy bag will recover the data bag in the group of the prior data bag. The present invention has a simple method and has a good resistance effect against continuous bag losing, and the present invention enhances the experience of the customer.

Description

technical field [0001] The invention relates to data packet transmission technology, in particular to a data packet transmission method, transceiver device and system capable of resisting data packet loss during transmission. Background technique [0002] During the transmission of digital signals, there are often various interferences in the transmission channel, which causes bit errors in the transmitted data. In order to detect and correct errors in time, channel coding is required before sending digital signals. Channel coding enables the receiving end to detect errors generated during data transmission by adding appropriate redundancy overhead and performing appropriate algorithm transformations. For some complex channel coding algorithms, not only the location of errors can be found, but also the generated errors can be corrected to a certain extent. For example, in multimedia applications based on mobile communication networks, multimedia data needs to be transmitted...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L1/00H04L47/43
Inventor 吕静陈敬昌何健
Owner TENCENT TECH (SHENZHEN) CO LTD
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