Data transmission method and device

A data transmission method and data packet technology, which are applied in the field of video transmission, data transmission method and device, can solve problems such as unsatisfactory data transmission effects, achieve the effects of reducing signaling overhead, reducing transmission delay, and improving data transmission quality

Inactive Publication Date: 2018-05-25
CHINA MOBILE COMM LTD RES INST +1
View PDF9 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, the embodiment of the present invention expects to provide a data transmission metho

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Data transmission method and device
  • Data transmission method and device
  • Data transmission method and device

Examples

Experimental program
Comparison scheme
Effect test

Example

[0161] Example 1:

[0162] In this example, a relay server is deployed in a neighboring base station, such as an eNodeB, and the sending end sends video data to the relay server. After receiving the data packet, the relay server transmits the first feedback information to the sending end according to the receiving status of the data packet. The sending end decides whether to retransmit the data packet according to the first feedback information and the priority of the transmission video frame. After adding FEC redundancy to the received video data, the relay server sends the video data to the receiving end, and the receiving end also transmits feedback information, which is the second feedback information. The relay server may dynamically adjust the FEC redundancy parameter of the data packet of the FEC packet processing module according to the second feedback information. In this way, the feedback time between the sender and the relay server is short, and the reception of impor...

Example

[0163] Example 2:

[0164] Such as Figure 5 As shown, this example provides a transmission system including:

[0165] The sender is used to send original data packets, for example, original video data packets;

[0166] The relay server, adjacent to the base station connected to the sender, is used to receive the original data packet sent by the sender, and indicate whether the sender should retransmit according to the receiving status, and after receiving the original data packet, use FEC The technology generates FEC data packets and sends the FEC data packets. The relay server here may send the retransmission instruction or the successful data acquisition instruction by transmitting the first feedback information to the sending end.

[0167] The receiving end is configured to receive the FEC data packet from the relay server, and can use FEC to perform data recovery and decoding, so as to obtain the data packet sent by the sending end. The receiving end may report the receiving s...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The embodiment of the invention discloses a data transmission method and device. The data transmission method applied to a relay server comprises the steps of receiving an original data packet sent bya transmitting end; sending first feedback information to the transmitting end according to a receiving state of the original data packet; carrying out FEC (Forward Error Correction) coding on the original data packet, thereby generating FEC redundant information and an FEC data packet, wherein the FEC data packet is generated based on the original data packet and the FEC redundant information; and sending the FEC data packet to receiving end. The method and the device are characterized by low transmission delay, high reliability and high transmission quality.

Description

technical field [0001] The invention relates to video transmission technology in the communication field, in particular to a data transmission method and device. Background technique [0002] When transmitting real-time video on a wireless network, in order to reduce the adverse effects of video data loss and errors on the decoding quality, some error control techniques need to be used to improve the reliability of video data transmission on the network. Two methods are usually used: Automatically request retransmission (automatic repeat request, ARQ) and forward error correction (ForwardError Correction, FEC). ARQ guarantees the reliability of data through feedback and response, but it consumes a lot of resources at the sending end and has a long delay; FEC detects and corrects data errors by generating certain redundant data, and allocates uplink bandwidth in the TD LTE environment of time division multiplexing The downlink bandwidth is smaller than the downlink bandwidth...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H04L1/00H04L1/16H04L1/18
CPCH04L1/004H04L1/16H04L1/18H04L1/1806H04L1/1812
Inventor 张世俊柴鑫刚
Owner CHINA MOBILE COMM LTD RES INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap