Subnet division method based on 1394b multi-subnet transmission structure

A technology of transmission structure and subnet, applied in bus network, data exchange through path configuration, etc., can solve the problems of low network transmission efficiency and high bus bandwidth occupancy rate, to improve the total system bandwidth, reduce the average delay, simplify the The effect of computing time

Inactive Publication Date: 2017-03-29
BEIHANG UNIV
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Problems solved by technology

[0007] Aiming at the problems of high bus bandwidth occupancy rate and low network transmission efficiency during 1394b multiplex transmission, the present invention proposes a subnet division method based on 1394b multi-subnet transmission structure based on queuing theory

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  • Subnet division method based on 1394b multi-subnet transmission structure
  • Subnet division method based on 1394b multi-subnet transmission structure
  • Subnet division method based on 1394b multi-subnet transmission structure

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[0030] The present invention will be further described in detail with reference to the accompanying drawings and embodiments.

[0031] Aiming at the problem of 1394b multi-channel transmission, the present invention proposes a simple and convenient subnet division method according to the 1394b multi-subnet switching structure, describes the transmission bandwidth and subnet topology of nodes in the 1394b multi-channel system through a matrix, and establishes a single The window service model calculates the bandwidth and delay within each subnet and between subnets of the multi-subnet system, selects the topology structure with the smallest delay, and realizes the division of the 1394b multi-subnet structure. The invention can not only obtain the minimum delay topological structure of the system, realize the subnet division of the 1394b multi-subnet transmission structure, but also promote the development of the 1394b multiplex transmission technology. Compared with the origina...

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Abstract

The invention provides a subnetting method based on a 1394b multi-subnet transmission structure and belongs to the technical field of network information communication. The method comprises the steps that a matrix A of transmission bandwidth between network nodes is obtained; a network topology matrix is given as X, each column of X is a subnet, and when a r node is in a certain subnet, the value of a r row element corresponding to the vector of the subnet is 1; all the network topology matrixes are enumerated; delay matrixes T in the subnets and between the subnets under the network topology are computed, and the average delay of a whole network is obtained; and according to the network topology matrix corresponding to the minimum value of the whole network average delay, subnetting is carried out. According to the method, 1394b multi-subnet structure dividing is achieved, system total bandwidth is improved, system average delay is lowered, the matrixes are used for describing a system topology structure, simpleness and convenience are achieved, and computing time during a subnetting process is greatly shortened.

Description

technical field [0001] The invention belongs to the technical field of network information communication, and in particular relates to a subnet division method based on a 1394b multi-subnet transmission structure. Background technique [0002] The IEEE1394 bus was developed by Apple in 1986 and became a standard in 1987. Originally Apple named it Firewire (Firewire). In 1995, the Institute of Electrical and Electronics Engineers (IEEE) standardized FireWire as IEEE1394-1995; in 2000, IEEE further improved the protocol and launched IEEE1394a; in 2002, IEEE launched IEEE1394b based on IEEE1394-1995 and IEEE1394a, which supports optical fiber transmission and bandwidth Support 3.2Gbps, which greatly improves the transmission performance. Due to its good real-time performance, high transmission rate, flexible topology, easy expansion and support for hot plugging, the IEEE1394b bus has become one of the candidate bus technologies in the next generation of aerospace and industri...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/40
Inventor 伊小素张量王明张春熹宋凝芳
Owner BEIHANG UNIV
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