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Method and device for suppressing retransmission

A message and serial number technology, applied in the transmission system, digital transmission system, error prevention/detection using the return channel, etc., can solve the problem of poor scalability and versatility, difficulty in implementation, and difficulty in confirming the rearrangement of the initial sequence number and other issues to achieve the effect of improving scalability and versatility and suppressing retransmission

Inactive Publication Date: 2011-08-10
BEIJING HUAWEI DIGITAL TECH
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Problems solved by technology

[0007] However, the (1) scheme needs to support the extended private protocol between the VQE Server and the STB, and the scalability and versatility are poor. The (2) scheme is difficult to confirm the rearranged starting sequence number, so it can be realized tougher

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  • Method and device for suppressing retransmission
  • Method and device for suppressing retransmission

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Embodiment Construction

[0025] 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 making creative efforts belong to the protection scope of the present invention.

[0026] The embodiment of the present invention provides a method for suppressing retransmission, including judging whether the visual sensitivity of the TS in the current RTP message is lower than the threshold, and if the judging result is yes, discarding the TS whose visual sensitivity is lower than the threshold ; If the discarded TS is all the TSs in the current RTP message, fill the current RTP message with a virtual RTP message, and the sequence number of...

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Abstract

The invention relates to a method and device for suppressing retransmission. The corresponding method comprises the following steps of: judging whether visual sensitivity of a TS (Transport Stream) in a first RTP (Real-time Transport Protocol) message is lower than a threshold value or not and discarding the TS with the visual sensitivity lower than the threshold value if a judgment result is definite; and replacing the first RTP message with a virtual RTP message if all the TSs in the first RTP message are discarded, wherein the virtual RTP message has the same serial number as the first RTPmessage. By filling the virtual RTP messages in the current RTP messages discarding all the TSs, and ensuring the serial numbers of the RTP messages to be consecutive, retransmission can be suppressed while video packages are discarded without introducing an extended private protocol or confirming reordered starting serial numbers, and expansibility and generalization are improved.

Description

technical field [0001] The invention relates to a method and device for suppressing retransmission, belonging to the technical field of network data transmission. Background technique [0002] In order to solve the problem of slow channel switching in IPTV (Interactive Personality TV, personalized interactive TV) services, the industry has proposed a FCC (Fast Channel Change, fast channel switching) solution, which can deploy VQE (Video Quality Experience, video quality experience) server accelerates unicast push to STB (Set Top Box, set-top box), so that the channel switching time is controlled within 1 second. However, when the network is congested, unicast streams consume a large amount of bandwidth. Therefore, in order to save bandwidth and reduce network costs, the industry has proposed a solution to selectively push burst traffic intelligently, that is, when the network is congested, network nodes Some data packets are discarded, but at the same time, the user experie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18H04L12/56H04L12/753
Inventor 刘淑英
Owner BEIJING HUAWEI DIGITAL TECH
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