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QoS control method of distinguishing service priorities in SDN

A priority and service technology, applied in the direction of data exchange network, digital transmission system, electrical components, etc., can solve the problem of SDN network broadband utilization rate and network data transmission throughput to be further improved, and achieve the effect of improving utilization rate

Active Publication Date: 2018-04-10
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing SDN network needs to be further improved in terms of bandwidth utilization and network data transmission throughput.

Method used

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  • QoS control method of distinguishing service priorities in SDN
  • QoS control method of distinguishing service priorities in SDN
  • QoS control method of distinguishing service priorities in SDN

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Embodiment

[0059] In this embodiment, four kinds of services in the 3G network are used as illustrative examples, as shown in Table 1, and the TOS domains in the IP protocol of these four kinds of service messages are respectively set with corresponding priorities, and the time delay requirements are the highest The TOS field of conversational service packets is set to 4, indicating that this type of packet is the highest priority service packet, and the TOS field values ​​of streaming media service packets, interactive service packets, and background service packets are respectively set to 3 , 2 and 1. The controller software uses the open source software Floodlight, and the OpenFlow switch uses the open source software defined network switch OpenvSwitch.

[0060] Table 1 Business priority

[0061]

[0062] see figure 2 , the specific implementation process of the QoS control process based on service priority of the present invention is as follows:

[0063] After receiving the Pa...

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Abstract

The invention discloses a QoS control method of distinguishing service priorities in a SDN, the method comprises the following steps: firstly, performing service priority division for data services inthe SDN according to QoS needed for the data services, then, in distinguishing routing, taking link congestion measurement as link cost criteria for a service data stream with the highest priority, and taking time delay needed for the service data stream with the highest priority as a constrain condition, routing through a Lagrange Relaxation aggregation criteria algorithm, and for the other service data streams, routing through a shortest path algorithm using hops as criteria; and in distinguishing queue scheduling, performing differentiated queue scheduling based on service priorities. Themethod provided by the invention guarantees end-to-end time delay of the service with the highest priority as much as possible, also guarantees different QoS of other services with different priorities in a distinguished mode, and meanwhile, the method routes the service with the highest priority to a low-congestion path, thus, utilization rate of network bandwidth and throughput capacity of network data transmission are improved.

Description

technical field [0001] The present invention relates to the technical field of QoS (Quality Of Service, service quality) control, in particular to a QoS control method for distinguishing business priorities in SDN (Software Defined Network, software defined network). Background technique [0002] The rapid development of the Internet has led to a rapid growth of service data streams transmitted in the network, and at the same time, the types of services have also increased sharply. Especially with the rise of multimedia services, the interaction of network services is more vivid and real-time, which makes business users put forward higher requirements for business service quality. Although the rapid development of network infrastructure construction has greatly improved network bandwidth and network speed, the business data that needs to be transmitted by the network is also growing rapidly. In the case of limited network resources, when a large amount of multiple business ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/725H04L12/851H04L12/865H04L12/727H04L12/733H04L45/121H04L45/122H04L47/6275
CPCH04L45/302H04L45/306H04L45/3065H04L47/2433H04L47/6275H04L45/122H04L45/121
Inventor 陈忠苏俭
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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