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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: 2008-07-02
INST OF SOFTWARE - CHINESE ACAD OF SCI
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  • 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

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Embodiment Construction

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

[0056] The method flow chart of the present invention is shown in FIG. 6 , and this embodiment is based on the IPv6 network environment to realize the service quality assurance system.

[0057] protocol extension

[0058] In order to meet the requirements of service quality assurance, it is necessary to extend the existing IPv6 standard and add a delay control extension header to the IP packet header. Its value 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 packet header; when the real-time service data packet reaches the edge router at the peer end, the edge router deletes the delay control extension header and forwards it to the user at the peer end . As shown in Figure 1, the format of the extension ...

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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 data packet 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 to the 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 sequence; 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 method for guaranteeing service quality of a packet switching network, in particular to a method for guaranteeing Internet service quality based on time granularity, and belongs to the field of data communication. Background technique [0002] At present, the Internet begins to provide real-time multimedia services such as video telephony, video conferencing, and IPTV. These services require low network delay, but the Internet still lacks an effective service quality assurance solution. The Internet first attempted to adopt the integrated service method to provide service quality assurance for real-time services. It used the Resource Reservation Protocol (ResourceReSerVation Protocol, RSVP, reference: R. Braden, Resource ReSerVation Protocol (RSVP), RFC 2205, September 1997) as the call Signaling, Weighted Fair Queuing (WFQ, Reference: Abhay K. Patekh, "A Generalized Processor Sharing Approach Flow Control in Integrated Servi...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L29/06H04L12/851
Inventor 石志强
Owner INST OF SOFTWARE - CHINESE ACAD OF SCI
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