A Method for Optimizing Effective Throughput of Multipath Parallel Transmission System

An effective throughput and transmission system technology, applied in the field of effective throughput optimization of multi-path parallel transmission systems, can solve the problems of reduced effective throughput, inability to achieve optimal performance of multi-path parallel transmission systems, error in algorithm execution results, etc. The effect of improving throughput performance and reducing data disorder

Active Publication Date: 2019-05-10
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

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  • A Method for Optimizing Effective Throughput of Multipath Parallel Transmission System

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Embodiment Construction

[0039] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0040] 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.

[0041] figure 1 Schematic diagram of end-to-end delay estimation based on Kalman filter for multi-path parallel transmission;

[0042] 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:

[0043] Z(k)=HX(k)+V(k), where X(k) and X(k-1) are the sy...

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Abstract

The invention relates to a method for optimizing the effective throughput of a multi-path parallel transmission system, and belongs to the technical field of communication. The method includes the following steps: step 1) in the multi-path parallel transmission system, use Kalman filter algorithm to estimate the propagation delay on each concurrent link; step 2) deduce that the data packets in the multi-path parallel transmission system have Step 3) Adjust the congestion window of the sender according to the deduced propagation delay estimation result and the constraints of orderly propagation of data packets. The method for optimizing the effective throughput of a multi-path parallel transmission system provided by the present invention can adaptively adjust the size of the congestion window of each sub-flow according to the propagation delay estimation and the data packet order propagation constraints, so as to balance each link load, reduce the maximum delay difference between concurrent links, reduce the disorder of data packets, and improve the effective throughput of the multi-path 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 Patents(China)
IPC IPC(8): H04L12/707H04W24/02H04W28/02H04L45/24
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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