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IP transmitting method for supporting service quality expanding of crossover service zone

A quality of service and differentiated service technology, applied in the field of Internet IP forwarding

Inactive Publication Date: 2005-07-20
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing Internet only supports best-effort IP forwarding services, and for some special applications, some transmission parameters need to be limited, such as loss rate, bandwidth, end-to-end delay and delay jitter, etc.

Method used

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  • IP transmitting method for supporting service quality expanding of crossover service zone
  • IP transmitting method for supporting service quality expanding of crossover service zone
  • IP transmitting method for supporting service quality expanding of crossover service zone

Examples

Experimental program
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Effect test

Embodiment Construction

[0043] We implement QoS support by using the IP forwarding method supporting DiffServ with QoS extension in the IP header structure shown in Figure 3, as shown in Figure 1. The server Server runs realServer 8.01 to provide streaming media services, and uses 3 PCs as client 1-client 3 to access the streaming media files on the server Server, and use RealPlayer 8.0 Plus to observe the image transmission results, so as to compare different service types and QoS constraints on transmission performance. The test server Tester Server provides background traffic for the entire network to simulate network link congestion. The device configuration used in the implementation is as follows:

[0044] PC configuration of server Server and client Client:

[0045] ■ CPUP42.2GHZ

[0046] ■ Motherboard intelD845

[0047] ■ Memory 256DDR

[0048] ■ Graphics card Geforce2MX400

[0049] ■ Hard drive WestJet 80G

[0050] ■ network card realtek 8139

[0051] In order to prevent each client cl...

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PUM

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Abstract

The invention is an IP transmitting method supporting the differentiation of service quality extension of service band, and its characteristic: it adopts a method of inserting restriction code expressed by altogether 8 binaries and restriction type in IP packet head to make IP head extension at router end of network entrance, marks the service type of the packet head to the TOS domain of the packet head according to manager-arranged packet IP type rule list, and uses absolute priority controlling policy in output queue of a node; it modifies the condition value of each restriction in the middle router in transmission path and composes an IP packet head with modified service quality mark to make one-down jump transmission of this IP packet head; it deletes extended field of the service quality from the router of the network entrance and composes an ordinary IP packet head and sends this ordinary IP packet head to receiving end. It has the advantages of supporting both service differentiation and service quality routing, easy to implement without modifying terminal software.

Description

technical field [0001] An IP forwarding method supporting differentiated services with quality of service extension belongs to the technical field of Internet IP forwarding. Background technique [0002] The IP forwarding method in the present invention is an IP forwarding method used in Internet routers to support differentiated services and quality of service routing, and can provide users with strong quality of service guarantees. [0003] The existing Internet only supports best-effort IP forwarding services, and for some special applications, some transmission parameters are required, such as loss rate, bandwidth, end-to-end delay, and delay jitter. In order to support QoS, the Internet Engineering Task Force has defined a differentiated services framework. By classifying, shaping, and aggregating each flow entering the network into different flows at network border nodes according to user flow rules and resource reservation information, Realize priority-based network ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L45/74H04L47/6275
Inventor 崔勇刘惠山徐恪徐明伟
Owner TSINGHUA UNIV
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