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Load distribution method for end-to-end multilink parallel transmission

A load distribution, multi-link technology, applied in transmission systems, network traffic/resource management, electrical components, etc., can solve problems such as errors, and achieve the effect of strong practicability

Inactive Publication Date: 2011-09-14
BEIJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the shortcomings of the prior art, the present invention provides a method for end-to-end multi-link parallel transmission in order to solve the problem that there may be errors in theoretical and actual transmission in the load distribution of end-to-end multi-link parallel transmission in the prior art. The load distribution method calculates the load distribution ratio between links before sending data packets, and at the same time calculates the errors that will exist and appear in load distribution in theoretical and actual transmission, so as to select the appropriate link and ratio to send business data

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  • Load distribution method for end-to-end multilink parallel transmission
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  • Load distribution method for end-to-end multilink parallel transmission

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Embodiment 1

[0043] like figure 2 Shown is a schematic diagram of an embodiment of end-to-end multi-link parallel transmission, in which it is assumed that there are M available links in total, and the links all use queues to transmit service data packets, then the method of the present invention is directed to the specific execution steps of this embodiment. for:

[0044] In the first step, the service source collects information: the service sends r data packets per unit time, and the set of available links is L={Li |i=1,2,...,M}; the set of information representing the available links, where represents link L i The maximum transfer rate of , has and represents link L i The average transmission delay of ; represents link L i The maximum number of retransmissions; represents link L i the packet error rate.

[0045] In the second step, the service source divides the service flow according to the available link information and service information, based on the participati...

Embodiment 2

[0076] In this embodiment, it is assumed that the service source end detects a total of three available links, that is, M=3. The maximum sending rate (unit is packets / second), average transmission delay (unit is ms), maximum number of retransmissions and packet error rate of each link are: The preset error threshold is 3%.

[0077] Assuming that the service rate of the service source is 60 packets per second in the initial stage, and after a period of time, the service rate is reduced to 35 packets per second. This is a specific example, and the method of the present invention is compared and analyzed through simulation. The reordering delay under the method of proportional load distribution proves the superiority of the method of the present invention. At the same time, through the statistics of the reordering delay at various rates, the relationship between the errors that will exist and appear in the theoretical and actual transmission of the proport...

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Abstract

The invention relates to the field of wireless network technology and provides a load distribution method for end-to-end multilink parallel transmission. According to the method provided by the invention, the error between a theoretical value of load distribution and actual transmission value is compared with an error threshold value, and different business division methods are adopted according to different comparison results; and thus, the reordering delay of a receiving end can be effectively reduced in the case of remarkable change of the data rate of a business source end, and the overall end-to-end delay is controlled. The method provided by the invention has relatively high practicability.

Description

technical field [0001] The invention relates to the technical field of wireless networks, in particular to a load distribution method for end-to-end multi-link parallel transmission. Background technique [0002] At present, many network technologies (such as 802.11 / 802.16 / 3GPP / 3GPP2, etc.) coexist in wireless networks, and the research on the integration of heterogeneous wireless network technologies with full IP and seamless cooperation between networks has become a hot spot; at the same time, wireless Internet The rapid development of services and high-speed data services makes it more and more difficult for the current end-to-end single-link transmission technology to meet the requirements for broadband, personalization, and intelligence of user services. End-to-end multi-link parallel transmission is an inevitable trend in the development of next-generation communication networks. [0003] End-to-end multi-link parallel transmission based on service segmentation can in...

Claims

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Application Information

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IPC IPC(8): H04W28/08H04L29/08
Inventor 王莹张平袁俊
Owner BEIJING UNIV OF POSTS & TELECOMM