Time granularity based internet QoS assurance method

A technology of time granularity and quality of service, applied in the field of data communication, can solve the problems of guarantee, inability to provide service quality of real-time services, and low computational complexity, and achieve the effect of good service quality, high bandwidth utilization efficiency, and low computational complexity.

Inactive Publication Date: 2010-04-21
INST OF SOFTWARE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the data plane, although DiffServ has low computational complexity and provides better service quality than best-effort service, it still cannot provide service quality guarantee for real-time services.

Method used

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  • Time granularity based internet QoS assurance method
  • Time granularity based internet QoS assurance method
  • Time granularity based internet QoS assurance method

Examples

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Embodiment Construction

[0055] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0056] The flow chart of the method of the present invention is as follows Image 6 As shown, this embodiment is based on the IPv6 network environment to implement the service quality assurance system.

[0057] Protocol extension

[0058] In order to meet the requirements of service quality assurance, the existing IPv6 standard needs to be extended, and a delay control extension header is added to the IP packet header, the value of which is tentatively set to 102, and the corresponding keyword is DLCT. After the edge router receives the user's real-time service data packet, it adds a delay control extension header to the data packet header; when the real-time service data packet reaches the edge router of the communication peer, the edge router deletes the delay control extension header, and then forwards it to the user of the communication pe...

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Abstract

The invention discloses a method for assuring quality of internet service based on time granularity; by adding a delay-control extension header which is used for recording state information of a datapacket into a packet head of the real-time service data packet, a relative time-limit mark in the real-time service data packet is set by an edge route according to a current token number; according tothe received relative time-limit value of the data packet, the data packet is distributed into delay queues with different granularity by a core route; the data packet in the queues is sent in sequen ce; by the method of sending a real-time service test data packet , the edge route can measure a congestion degree of the network, thereby making a decision whether to receive a new call. The invention can well ensure an end-to-end delay of the data packet and has low computational complexity in the core route, which improves the service quality and has strong expansibility at the same time.

Description

technical field [0001] The invention relates to a service quality assurance method for a packet switching network, in particular to a time granularity-based Internet service quality assurance method, which belongs to the field of data communication. Background technique [0002] At present, the Internet has begun to provide real-time multimedia services such as video telephony, video conferencing and IPTV. These services require low network delay, but the Internet currently lacks an effective service quality assurance scheme. The Internet first tried to use the integrated service method to provide service quality assurance for real-time services. It used the Resource ReSerVation Protocol (RSVP, reference: R. Braden, Resource ReSerVation Protocol (RSVP), RFC2205, September 1997) as the call information. order to weighted fair queuing (Weighted Fair Queuing, WFQ, reference: Abhay K. Patekh, "A Generalized Processor Sharing ApproachFlow Control in Integrated Services Networks: ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L29/06H04L12/851
Inventor 石志强
Owner INST OF SOFTWARE - CHINESE ACAD OF SCI
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