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Method for packet transmission service quality dispatch by using remained life period in packet head

A technology for packet transmission and quality of service, which is applied in the field of guaranteeing packet transmission delay, and can solve the problems of not considering and not completely solving packet transmission delay.

Inactive Publication Date: 2005-12-28
INST OF COMPUTING TECHNOLOGY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the DiffServ model only schedules according to the type of packet, and it does not consider whether the packet can reach the destination node according to the time requirement.
Therefore, this method cannot completely solve the problem of packet transmission delay in the network.

Method used

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  • Method for packet transmission service quality dispatch by using remained life period in packet head
  • Method for packet transmission service quality dispatch by using remained life period in packet head
  • Method for packet transmission service quality dispatch by using remained life period in packet head

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Embodiment Construction

[0019] Such as figure 1 As shown in , the source sends packets into the network. The packets will be processed by the relevant intermediate nodes in the network, then forwarded according to the relevant processing information, and finally sent to the destination. In the existing communication network, if the intermediate node processes the TTL lifetime field of the packet and finds that the lifetime of the packet in the network is zero, the packet is discarded. Otherwise, after routing is selected according to the conventional route-by-path routing algorithm, the packet is forwarded to the next intermediate node leading to the destination destination. We will now add the following processing functions in addition to the original TTL processing in the remaining lifetime TTL processing flow of the node pair grouping (indicated by figure 1 intermediate node 1 shown as an example):

[0020] 1) After completing the calculation of the TTL value, the intermediate node 1 needs to c...

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Abstract

The present invention is a method for dispatching the service quality of the grouping transmission and selecting the route using the remaining living period (TTL:Time-to-Live) in the grouping head. The method realizes the time-delay guarantee terminal by terminal during the transmission in the ommunication network when grouping, and makes various receiving nodes in the communication network select route and speed up the transmitting dispatch according to the identified TTL value, using the grouping word segments in the current communication network. The method first judges whether a suitable route exists, which can satisfy the time-delay guarantee terminal by terminal, and then carries out the transmission dispatch using the TTL value as weight if the route exists, so as to ensure the effectiveness and the stability of the transmission in the network when grouping.

Description

technical field [0001] The invention relates to the technical field of guaranteeing packet transmission time delay. In particular, it relates to a method for scheduling packet transmission quality of service by using the remaining lifetime (TTL) in the packet header, especially a packet scheduling and routing method for realizing end-to-end delay guarantee during packet transmission in a communication network. Background technique [0002] As we know, the scale of IP network is expanding day by day, and the applications supported are also increasing day by day. IP network has been widely recognized as a convergence network of various services. But real-time applications such as VoIP, video conferencing, distance learning, and telemedicine, which bring bright prospects to IP networks, pose serious challenges to the loose structure, simple service and control mechanism of IP networks. How to meet the transmission delay of packets on the IP network and provide quality of servi...

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Application Information

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IPC IPC(8): H04L12/24H04L12/861H04Q3/00H04Q3/64
Inventor 石晶林李忠诚
Owner INST OF COMPUTING TECHNOLOGY - CHINESE ACAD OF SCI