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Method for flow distribution in multichannel access network

A technology for traffic distribution and access to the network, applied in the field of network communication, can solve problems such as time-consuming and packet loss, and achieve the effect of improving utilization and reducing waste

Active Publication Date: 2015-05-06
INST OF ACOUSTICS CHINESE ACAD OF SCI +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The purpose of the present invention is to overcome the shortcomings of the traffic distribution method in the prior art, such as time-consuming and serious packet loss, so as to provide a traffic distribution method in a multi-channel access network that can effectively improve channel utilization

Method used

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  • Method for flow distribution in multichannel access network

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Embodiment Construction

[0040] The present invention will be further described now in conjunction with accompanying drawing.

[0041] Before describing the present invention in detail, first, the application scenario of the multi-channel access network involved in the present invention will be described. figure 1 It is a schematic diagram of a multi-channel access network. In order to improve the downlink bandwidth of end users, the original IP channel (ie figure 1 In the OLT (Optical Line Terminal, Optical Line Terminal) and ONU (Optical Network Unit, Optical Network Unit) on the basis of adding QAM channels (ie figure 1 The channel where the IPQAM device is located), generally speaking, the bandwidth of the QAM channel is greater than the bandwidth of the IP channel. The channel management device is connected to both the IP channel and the QAM channel.

[0042] In this application, a channel management device is used to manage how data streams are allocated between IP channels and QAM channels. ...

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Abstract

The invention relates to a method for flow distribution in a multichannel access network. Multiple channels at least contain an IP (Internet Protocol) channel and a QAM (Quadrature Amplitude Modulation) channel. The method comprises the following steps: carrying out initial flow distribution of a newly-received data flow; comparing a required bandwidth and a residual bandwidth of the IP channel; if the required bandwidth is smaller than the residual bandwidth of the IP channel, distributing the data flow to the IP channel; otherwise distributing the data flow to the QAM channel; and detecting a packet loss rate of the data flow in a transmission process of the data flow, and switching between the transmission channels when the packet loss rate is abnormal, wherein the step specifically comprises a step of switching a flow with the maximum occupied bandwidth on the IP channel to the QAM channel when the packet loss rate of the IP channel is greater than a threshold of the packet loss rate of the IP channel; or switching all data flows borne by a port with the minimum bandwidth in a port set having a greater bandwidth than the excess bandwidth to another frequency point when the packet loss rate of one frequency point on the QAM channel is greater than a threshold of the packet loss rate of the frequency point of the QAM channel.

Description

technical field [0001] The invention relates to the field of network communication, in particular to a flow distribution method in a multi-channel access network. Background technique [0002] The interactive TV service based on the two-way cable TV network continues to develop, and the user's dependence on the Internet on the TV platform has increased, so the demand for the data downlink rate of the terminal platform is also getting higher and higher. Today, insufficient access downlink rate has become a problem to be solved in the development of digital TV services, and it is also one of the main factors affecting user experience. [0003] For the digital TV terminal platform, if the IP network access mode is adopted, the downlink rate for 4M ADSL broadband is only 4Mbps. However, the live broadcast service of high-definition interactive TV usually adopts the MPEG-2 encoding format, and the code rate is about 20-25Mbps. Using H.264 encoding, the code rate is also around ...

Claims

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Application Information

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IPC IPC(8): H04L12/801H04L12/819H04L47/21
Inventor 刘磊刘孝圣郑艳伟彭飞
Owner INST OF ACOUSTICS CHINESE ACAD OF SCI
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