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Optimization method of efficient throughput capacity of multipath parallel transmission system

A technology of effective throughput and transmission system, which is applied in the field of optimization of effective throughput of multi-path parallel transmission system, and can solve the problems of out-of-order data packets, reduction of effective throughput, and error of algorithm execution results.

Active Publication Date: 2016-08-17
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

Incorrect RTT estimation leads to errors in the execution results of algorithms such as data packet splitting and data packet retransmission, and the asymmetry between paths is one of the root causes of packet out-of-order and reduced effective throughput during transmission.
Existing research cannot take into account the end-to-end round-trip delay estimation and the asymmetry between paths, so that the multi-path parallel transmission system cannot achieve optimal performance in a heterogeneous network environment

Method used

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  • Optimization method of efficient throughput capacity of multipath parallel transmission system
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Embodiment Construction

[0036] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0037] The present invention provides a method for optimizing the effective throughput of a multi-path parallel transmission system, which can accurately estimate the path delay, apply the estimated delay to window congestion control, and adaptively adjust the size of the congestion window at the sending end , which can effectively reduce data disorder and improve the throughput performance of the transmission system.

[0038] figure 1 Schematic diagram of end-to-end delay estimation based on Kalman filter for multi-path parallel transmission;

[0039] The Kalman filter algorithm can optimally estimate the state of the discrete system, in the form of a linear stochastic differential equation: X(k)=AX(k-1)+BU(k-1)+W(k-1), the system state The measured value of can be described as: Z(k)=HX(k)+V(k), where X(k) and X(k-1) are the system state...

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Abstract

The invention relates to an optimization method of an efficient throughput capacity of a multipath parallel transmission system, and belongs to the technical field of communication. The optimization method comprises the following steps of step 1) estimating propagation time delay on each concurrent link by utilizing a Kalman filtering algorithm in the multipath parallel transmission system; step 2) of deducing a data packet ordered propagation constraint condition in the multipath parallel transmission system; and step 3) of adjusting a congested window of a sending end based on the deduced propagation time delay estimation result and the deduced data packet ordered propagation constraint condition. The optimization method of the efficient throughput capacity of the multipath parallel transmission system provided by the invention can adaptively adjust the size of the congested window of each sub-stream based on the propagation time delay and the data packet ordered propagation constraint condition, thereby balancing load on each link, reducing the maximum time delay difference between the concurrent links, reducing data packet disorder and increasing the efficient throughput capacity of the multipath parallel transmission system.

Description

technical field [0001] The invention belongs to the technical field of communication, and relates to a method for optimizing the effective throughput of a multi-path parallel transmission system. Background technique [0002] With the development of mobile communication technology, most of the mainstream mobile terminals in the market today are equipped with two or more wireless network interfaces. On this basis, people began to study how to use multiple different network interfaces for multi-path transmission in order to aggregate the available bandwidth on multiple wireless networks and improve the QoS of bandwidth-intensive services such as streaming media and video conferencing. The research is about how to improve the effective throughput of multi-path parallel transmission system. [0003] In today's highly developed wireless communication technology, the transmission rate of a single access network is close to the Shannon limit, and it is becoming more and more diffi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/02H04W28/02H04L45/24
CPCH04W24/02H04W28/0289
Inventor 陶洋王振宇熊炫睿张家泳赫前进李加成赵芳金严志军
Owner CHONGQING UNIV OF POSTS & TELECOMM
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