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Method and device for controlling intelligently collaborative multi-path transmission of receiving end

A technology of multi-path transmission and control method, which is applied in the field of multi-path transmission control method and device for intelligent coordination at the receiving end, which can solve the problems of not considering the characteristics of multi-path transmission and not being applicable to the Internet, so as to achieve balanced load overhead and improve experience quality effect

Inactive Publication Date: 2014-07-16
BEIJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these schemes continue to use the "fixed" AIMD mechanism in terms of congestion control. More importantly, these schemes do not take into account the characteristics of multi-path transmission, so they are not suitable for the future heterogeneous and multi-homed Internet.

Method used

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  • Method and device for controlling intelligently collaborative multi-path transmission of receiving end
  • Method and device for controlling intelligently collaborative multi-path transmission of receiving end
  • Method and device for controlling intelligently collaborative multi-path transmission of receiving end

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Embodiment 1

[0037] An embodiment of the present invention provides a receiver-based transmission rate evaluator, and the evaluation process includes:

[0038]The standard SCTP protocol continues the AIMD mechanism in the traditional TCP to adjust the data transmission rate and control the congestion. The rate adjustment based on the AIMD mechanism can be expressed as:

[0039] rate i + 1 = rate i + Δrate ifnocongestionis det ected ; 1 2 × rate i , ...

Embodiment 2

[0054] An embodiment of the present invention provides a path switching trigger assisted by a receiver, and the implementation process includes:

[0055] In SCTP, the path management is too simple. For example, only when the primary path fails, the primary path will be switched, and an available alternative path will be selected as the new primary path for data transmission. This simple path management strategy has also become a bottleneck restricting SCTP performance. The original design intention of PST-rev is to implement a novel path switching trigger at the receiving end, by comparing the transmission performance of all paths in the SCTP association at the receiving end (namely, Rate e value), when the Rate of one or more alternative paths is detected e The value is greater than the current main path (denoted as d cp ) of Rate e value, at this time the receiving end enters the path selection transmission state, in this state, the receiving end selects a route with the ...

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Abstract

The invention provides a method and device for controlling intelligently collaborative multi-path transmission of a receiving end. An existing SCTP is improved. The method comprises the steps of establishing a transmit speed evaluator (SRE-rev) based on the receiving end, determining ideal data transmitting speed (ASR) according to path parameters and feeding back ASR values, establishing a path switchover trigger (PST-rev) assisted by the receiving end, carrying out fast recovery after main path selection and path switchover are executed at the receiving end, defining four transmitting states of slow starting, congestion avoidance, path selection and path fast recovery, and describing the conversion process of the four transmitting states. According to the scheme, the speed control and the path management of the receiving end are achieved, the load expenses of a sending end and the load expenses of the receiving end are balanced, the experience quality on the multi-path transmission of streaming media for a user is improved, and a beneficial solution idea for establishing a multi-node intelligently collaborative transmission mechanism in future novel Internet is provided.

Description

technical field [0001] The present invention relates to the field of communication, in particular to a multiplex transmission control method and device for intelligent coordination of a receiving end. Background technique [0002] In recent years, wireless communication technologies such as wireless WiFi, WiMax, and LTE have achieved unprecedented development. Thanks to this, more and more wireless terminals with multiple network interfaces have been widely promoted and applied. Based on the multiplex transmission control protocol, these multi-interface wireless terminals have the ability to access multiple networks at the same time, can fit multiple link bandwidths to achieve multi-path communication, and improve user end-to-end data transmission throughput and other performance. Due to its multi-homing and multi-streaming characteristics, SCTP is considered to be able to provide seamless, continuous and reliable data communication in a mobile heterogeneous wireless network...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/801H04L12/841H04L12/703H04L45/28
Inventor 许长桥张宏科关建峰曹远龙黄辉
Owner BEIJING UNIV OF POSTS & TELECOMM
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