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Data transmission method, device and system

A data transmission method and equipment technology, applied in the field of communication, can solve problems such as delay increase, affecting data transmission service quality, data loss, etc., and achieve the effect of realizing dynamic adjustment, reliability or delay

Active Publication Date: 2012-02-01
HONOR DEVICE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Among them, the reliability of data transmission based on TCP is better. If a data packet is lost during data transmission, the sender will resend the data packet, but this method will cause the sending window to be in a waiting state for a long time, thus Increases the delay; UDP-based data transmission, because there is no data packet retransmission mechanism, the delay guarantee is good, but there is data loss and poor reliability
The above two methods cannot meet the requirements of data transmission and seriously affect the service quality of data transmission
For example, taking the wireless video service as an example, since the data packets of the wireless video service have data packets that require high transmission reliability, the UDP-based method is usually not used, but the TCP-based method is used for transmission. This in turn leads to increased latency, which affects the viewing quality of video services

Method used

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  • Data transmission method, device and system
  • Data transmission method, device and system
  • Data transmission method, device and system

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Embodiment Construction

[0069] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are the Some, but not all, embodiments are invented. 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.

[0070] figure 1 It is a schematic flow chart of an embodiment of the data transmission method of the present invention. The method of this embodiment may be executed by the sending end device, such as figure 1 As shown, the following steps may be included:

[0071] Step 101, the sending end device sends a data packet to the receiving end device, and starts a window advanc...

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Abstract

The invention provides a data transmission method, device and system. The method comprises the following steps of: sending a data packet to a receiving device by a sending device, wherein a QoS (Quality of Service) guarantee level is set in the packet head of the data packet; feeding back a confirmation message to the sending device and forwards moving a receiving window by the receiving device when sequentially receiving the data packet according to the QoS guarantee level if the QoS guarantee level belongs to a first level; moving the data packet out of a sending window and forwards moving the sending window by the sending device when receiving the confirmation message; directly moving the data packet out of the receiving window and forwards moving the receiving window by the receiving device after receiving the data packet according to the QoS guarantee level if the QoS guarantee level belongs to a second level; and directly moving the data packet out of the sending window and forwards moving the sending window by the sending device after sending the data packet. According to the invention, the dynamic adjustment requirement on the reliability or time delay of data transmission is realized.

Description

technical field [0001] The present invention relates to communication technology, in particular to a data transmission method, device and system. Background technique [0002] Current business data transmission mainly includes two methods, for example, data transmission based on Transmission Control Protocol (Transmission Control Protocol, TCP for short), and data transmission based on User Datagram Protocol (User Datagram Protocol, UDP for short). [0003] Among them, the reliability of data transmission based on TCP is better. If a data packet is lost during data transmission, the sender will resend the data packet, but this method will cause the sending window to be in a waiting state for a long time, thus This increases the delay; for UDP-based data transmission, since there is no data packet retransmission mechanism, the delay guarantee is good, but there is data loss and poor reliability. The above two methods cannot meet the requirements of data transmission and seri...

Claims

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Application Information

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IPC IPC(8): H04L29/08H04L29/06
Inventor 邓永锋邱勇
Owner HONOR DEVICE CO LTD
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