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Explicit congestion control method in named data network

A named data network and congestion control technology, applied in data exchange networks, digital transmission systems, electrical components, etc., can solve the problems of uncertain distribution and difficulty in accurately estimating RTT, and achieve the effect of low packet loss rate and fast data transmission

Active Publication Date: 2021-12-03
深圳蜂格科技有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

All of the above are based on timeout-driven congestion control strategies. This type of algorithm uses RTT (Round Trip Time) as the timeout measurement. However, due to the multi-source characteristics of NDN, the data content requested by the content requester in the network The distribution is often uncertain, which makes accurate estimation of RTT very difficult

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  • Explicit congestion control method in named data network
  • Explicit congestion control method in named data network
  • Explicit congestion control method in named data network

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Embodiment Construction

[0043] In order to facilitate those of ordinary skill in the art to understand and implement the present invention, the present invention will be described in further detail below in conjunction with the examples. It should be understood that the implementation examples described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0044] A method for explicit congestion control in a named data network, comprising the following steps:

[0045] Step 1. The routing node divides the interest packet into different data streams according to the prefix of the named data network name, and divides the priority of different data streams according to the delay difference;

[0046] Step 1 specifically includes the following steps:

[0047] Step 1.1. Divide the interest packet into different data streams according to the prefix of the named data network name. The reason for this definition is that the interest packets w...

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Abstract

The invention discloses an explicit congestion control method in a named data network. When the network is congested, the speed of the greedy flow is limited by a counter and a shaping queue, a congestion information domain is updated in an interest packet, and the congestion information domain is fed back to a downstream routing node hop by hop; the congestion information is fed back to the content requester through the data packet, and the content requester adjusts the interest packet sending rate according to the congestion information. According to the invention, the time delay difference is introduced to carry out priority division on different data streams, so that the service quality of the different data streams is ensured.

Description

technical field [0001] The invention relates to the field of computer network data congestion control, in particular to an explicit congestion control method in a named data network NDN (Named Data Networking). Background technique [0002] NDN (Named Data Networking) is a network system with named data as the main communication object. It is the most representative architecture scheme of the information center network. It focuses on the information itself and weakens the location of information, realizing the "where" The transition to "what". In NDN, by naming the data and communicating according to the name information of the data packet, the current network communication method based on the IP address is changed, and it is particularly outstanding in terms of robustness and scalability compared to the TCP / IP network. The communication in NDN is driven by the content requester, that is, the content requester first needs to send a data request, and the content publisher th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/801H04L12/815H04L12/851H04L12/863H04L47/22
CPCH04L47/2441H04L47/12H04L47/225H04L47/625
Inventor 胡青侯睿邢光林
Owner 深圳蜂格科技有限公司
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