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Self-adaption high-speed information transmission method based on measurement

A high-speed information and transmission method technology, applied in the field of adaptive high-speed information transmission based on measurement, can solve problems such as inaccurate network bandwidth, inability to achieve transmission effects, transmission speed, and transmission rate, and achieve full use of network bandwidth.

Inactive Publication Date: 2012-01-25
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] On the one hand, the network bandwidth predicted by the above technical solution is not accurate, so it is impossible to truly judge the network quality;
[0013] On the other hand, the purpose of the above method is only to ensure the quality of video transmission service, and the actual bandwidth of the network is not utilized to the greatest extent during the transmission process, so the best transmission effect and transmission speed cannot be achieved;
[0014] In addition, after sending a data packet, the sender of the above technical solution needs to wait for the receiver's ACK response to the data packet before sending the next data packet, and the transmission rate will be affected by the network delay;

Method used

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  • Self-adaption high-speed information transmission method based on measurement
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  • Self-adaption high-speed information transmission method based on measurement

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Embodiment 1

[0039] The invention discloses a measurement-based self-adaptive high-speed information transmission method. Two roles participate in the transmission process: a sender and a receiver. The object sent is a specific information block, such as a specified memory storage unit or disk file in a computer. This solution uses the UDP protocol for transmission, thereby avoiding the TCP handshake process and the ACK confirmation process, and avoiding the interference of network delay. The specific method is as follows:

[0040] a. Using the UDP protocol, the sender divides the sending object into multiple fixed-size packets, and the packet size is L;

[0041] b. At the beginning of transmission, the sender sends two packets continuously. These two packets are called measurement packet pairs. After receiving these two packets, the receiver calculates the time interval ΔT between the arrival of these two packets, and calculates Find the current available network bandwidth PB=L / ΔT;

[...

Embodiment 2

[0045] As a preferred embodiment of the present invention, a further technical solution of the present invention is: each group described in step a has a unique integer group number, and the group number is continuously incremented; and there is also step e after step d: receiving The party memorizes all received packet numbers, records all possible lost packet numbers, and counts the number of received packets as CG, and the number of lost packets as CL, thus calculating the packet loss rate LR=CL / (CG +CL), if the receiver finds that the packet loss rate LR is increasing continuously for N seconds, then in the next calculation of the PB value, divide the PB value obtained in step b by 2, prompting the sender to increase the sending interval ΔT, to avoid causing further network congestion. The value of P is preferably 1.2, and the size of L is not greater than 1200 bytes. Said t is 1 second. Said N is 10 seconds.

Embodiment 3

[0047] According to the value of L, N can also be adjusted to 8 seconds to 12 seconds.

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Abstract

The invention discloses a self-adaption high-speed information transmission protocol based on measurement, relating to the technical field of high-speed transmission of network information and adopting the UDP protocol. A sender divides objects which need to be sent into a plurality of subgroups with fixed size; at the beginning of transmission, the sender continuously sends two subgroups which are called measurement packet pair; after receiving the two subgroups, the receiver calculates the delta T time interval of the arriving of the two subgroups, and calculates the current available network bandwidth according to the delta T; the receiver sends the network bandwidth PB value obtained in step b to the sender; and after receiving the network bandwidth PB value, the sender adjusts the data transmission interval delta T<adjustment>, and adopts the adjusted delta T<adjustment> as time interval to continuously send data subgroups to the receiver. Under the circumstance that the cost of network basic facilities is not increased, the invention can take full advantage of the network bandwidth, and can ensure that the process of network transmission does not cause congestion.

Description

technical field [0001] The invention relates to the technical field of high-speed network information transmission, in particular to a measurement-based self-adaptive high-speed information transmission method. Background technique [0002] In the unstable network quality and wireless network environment, the existing network transmission protocols cannot make good use of the limited network bandwidth. How to make better use of the effective bandwidth and provide network users with higher-speed transmission services without increasing the cost of network infrastructure has become a research hotspot. [0003] The existing transport layer protocol is mainly based on TCP. TCP is connection-oriented (connection-oriented), that is, before an application process starts sending data to another application process, the two processes must first "shake hands" with each other: send some preparatory segments to each other to establish guaranteed data Transfer the required parameters. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04L1/00
Inventor 黄鹂声汪文勇张翔
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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