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Unshielded QoS flow scheduling strategy simultaneously supporting multiple priorities

A priority, non-shielding technology, applied in digital transmission systems, electrical components, transmission systems, etc., to improve service quality and expand the scope of scheduling

Active Publication Date: 2013-09-25
武汉迈威通信股份有限公司
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  • Description
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Problems solved by technology

The traditional shielded QoS decision-making process can no longer meet this need

Method used

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  • Unshielded QoS flow scheduling strategy simultaneously supporting multiple priorities
  • Unshielded QoS flow scheduling strategy simultaneously supporting multiple priorities
  • Unshielded QoS flow scheduling strategy simultaneously supporting multiple priorities

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Embodiment Construction

[0029] The present invention will be further described below in conjunction with drawings and embodiments.

[0030] The unshielded QoS flow scheduling policy proposed in this paper allows users to customize the high and low levels of the existing priority types of the switch before QoS decision-making, and the original priority type level can also be used unchanged.

[0031] by image 3 As an example, where Q n [i] (n=1, 2, 3, 4, 5; i=1, 2, 3, 4) represent various QoS priority queues of different levels. The smaller the value of QoS type n, the higher the queue level; the larger the value of the queue number i, the faster the forwarding rate of the queue. The user keeps the original priority type of the switch unchanged, which is still DiffServ Based QoS>802.1P Based QoS>MAC-SA Based QoS>Protocol Based QoS>Port Based QoS.

[0032] The subsequent unshielded priority decision-making process is as follows:

[0033] (1) If the switch does not enable the QoS function, all ingre...

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Abstract

The invention discloses an unshielded quality of service (QoS) flow scheduling strategy simultaneously supporting multiple priorities. The strategy comprises the following steps that: firstly, three stages of priority queues of a quaternary linked list structure are established from top to bottom according to a user-customized priority type order, wherein each started priority type corresponds to a stage of queue; secondly, entry packets with multiple priority labels are distributed to the stages of corresponding priority queues according to an unshielded QoS strategy flow and the started priority level; and finally, each stage of priority queue is traversed according to a new postorder quadtree search method to realize the scheduling of the three stages of priority queues. Through the technology, the user-customized priority type level is retained, and the idea that a user intends to simultaneously start multiple priorities is considered, so various service requirements of the user are met. The scheduling range of the priority level is extended, and the QoS of a switch is improved.

Description

technical field [0001] The invention relates to a QoS flow scheduling strategy. Under the condition of ensuring the high and low levels of QoS types customized by users, this technology adopts an unshielded three-level QoS flow queue scheduling mechanism, which can simultaneously take into account multiple types of priorities during the data packet forwarding process. The method not only retains the order of priority division customized by the user, but also takes into account the idea that the user wants to enable multiple priorities at the same time, expands the scheduling range of the priority levels, and improves the service quality of the switch. Background technique [0002] With the wide application of Ethernet technology, there are more and more types of services based on IP network applications. According to different service characteristics, different users have different urgency and reliability requirements for various service needs. For example, real-time servic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/725H04L47/6275
Inventor 周厚明刘洋
Owner 武汉迈威通信股份有限公司
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