A traffic distribution method and device for multi-path routing in a cognitive wireless ad hoc network

A self-organizing network and cognitive wireless technology, which is applied in the field of multi-path routing traffic distribution in cognitive wireless self-organizing networks, can solve problems that have not been studied in depth and affect the quality of end-to-end communication services

Inactive Publication Date: 2016-01-13
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0007] However, the dynamic changes of data traffic arrival rate and node service rate in cognitive wireless ad hoc networks also affect the quality of end-to-end communication services, and the existing technology has not done in-depth research on this

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  • A traffic distribution method and device for multi-path routing in a cognitive wireless ad hoc network
  • A traffic distribution method and device for multi-path routing in a cognitive wireless ad hoc network
  • A traffic distribution method and device for multi-path routing in a cognitive wireless ad hoc network

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[0063] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings and examples, so as to fully understand and implement the process of how to apply technical means to solve technical problems and achieve technical effects in the present invention. The embodiments of the present application and the combinations of the various features in the embodiments without conflict are within the protection scope of the present invention.

[0064] Additionally, the steps shown in the flowcharts of the figures may be performed in a computer system, such as a set of computer-executable instructions. Also, although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that shown or described herein.

[0065] figure 1 An illustration of the multipath topology of a cognitive wireless ad hoc network.

[0066] Such as figure 1 In the multipath topology s...

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Abstract

The invention discloses a flow rate distribution method and device of cognitive wireless self-organizing network multipath routing so as to reduce the influences of dynamic variation of data traffic arrival rate and node service speed rate on end-to-end service quality in the cognitive wireless self-organizing network. The method comprises the following steps of: the path number between a source end secondary user and a target end secondary user of end-to-end data transmission by adopting a multipath routing algorithm is obtained; the source end secondary user collects the service speed rate and spectrum availability ratio of each hot node, and generates a path list of the multipath routing according to the service speed rate, the spectrum availability ratio and a multipath routing protocol of each hop node on each path; and the traffic distribution optimal issue is converted into the convex optimization problem for solving a lagrangian multiplier and the traffic of each path distributed to the path list through a lagrange method, and transmission is carried out by adopting optimization speed rate on each path in the path list according to iteration solved results by a reduced gradient method. The embodiment of the invention improves the end-to-end transmission performance and efficiency.

Description

technical field [0001] The present invention relates to a flow control technology of a cognitive wireless ad hoc network, in particular to a flow distribution method and device for multipath routing of a cognitive wireless ad hoc network. Background technique [0002] With the rapid development of wireless network technology, traditional static spectrum allocation regulations have led to serious uneven spectrum utilization. [0003] The proposed cognitive wireless network aims to detect transmission opportunities in the licensed spectrum through nodes with spectrum awareness capabilities (referred to as: secondary users), and dynamically switch transmission channels without interfering with licensed spectrum users (referred to as: primary users). Opportunistic access to transmissions. This technology can effectively alleviate the pressure of unlicensed spectrum resource occupation and improve the utilization rate of licensed spectrum. The International Spectrum Management ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/10
Inventor 邹仕洪桂丽
Owner BEIJING UNIV OF POSTS & TELECOMM
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