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Dynamic frequency spectrum distribution method of cognitive heterogeneous network

A technology for cognitive heterogeneous network and dynamic spectrum, applied in the field of dynamic spectrum allocation

Active Publication Date: 2014-11-26
HARBIN ENG UNIV
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Problems solved by technology

[0005] The purpose of the present invention is to provide a dynamic spectrum allocation method for cognitive heterogeneous networks, which can effectively solve the optimization problem of discrete multi-constraint spectrum allocation parameters in cognitive heterogeneous networks, and achieve the optimal effect of dynamic spectrum allocation for cognitive heterogeneous networks

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  • Dynamic frequency spectrum distribution method of cognitive heterogeneous network
  • Dynamic frequency spectrum distribution method of cognitive heterogeneous network
  • Dynamic frequency spectrum distribution method of cognitive heterogeneous network

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Embodiment Construction

[0049] Such as figure 1 As shown, the dynamic spectrum allocation method of the cognitive heterogeneous network of the present invention includes the following steps:

[0050] Step 1: Sensing the currently available spectrum resources F, the access network randomly proposes spectrum requirements, sets the channel spectrum granularity, sets the probability HMCR to select from the quantum harmony set, and initializes the dynamic spectrum method based on quantum harmony;

[0051] The spectrum resource width to be allocated is F, and the channel bandwidth requirements of the K heterogeneous wireless network access technologies are respectively B i (i=1, 2, ..., K), the spectrum resources are divided into multi-granularity overlapping channels, and the number of channels corresponding to each network is The total number of channels is Each channel is numbered with an integer m (1≤m≤M); the set of channels with the same bandwidth (Φ 1 , Φ 2 ,...,Φ K ) is called the channel s...

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Abstract

The invention relates to a dynamic frequency spectrum distribution method of a cognitive heterogeneous network. A probability HMCR carrying out selection from a quantum harmony set is set and a quantum-harmony-based dynamic frequency spectrum method is initialized; a quantum tone of each quantum harmony is measured to obtain a harmony base x and a harmony memory base H, and fitness calculation is carried out on each harmony and the corresponding fitness values are respectively stored in a Fit and a Fit 1; if rand is less than HMCR, the quantum tone of the last-generation quantum harmony is inherited and a quantum rotating gate is started to generate a new solution; if the rand is larger than the HMCR, a tent pseudo chaos sequence is generated randomly to generate a new quantum harmony; the quantum tone of each quantum harmony is measured successively to obtain a corresponding harmony, and fitness calculation is carried out to replace the corresponding fitness value in the Fit 1; and a global optimum harmony in the harmony memory base H is outputted in a loop iteration mode and global optimum harmony mapping is carried out to obtain a frequency spectrum distribution matrix A that is the optimum frequency spectrum distribution scheme of the cognitive heterogeneous network.

Description

technical field [0001] The invention relates to a dynamic frequency spectrum allocation method for a cognitive heterogeneous network. Background technique [0002] The existing wireless communication network is composed of multiple radio access networks (RAN, radio access network) based on different radio access technologies (RAT, radio access technology). Although these access networks provide similar services, they work independently , it cannot guarantee that user services will always obtain the best quality of service. For this reason, different access networks can increase coverage and improve service quality through convergence, and heterogeneous wireless networks have become a development trend; in addition, the current fixed allocation of spectrum resources considers the peak value of the RAN Business, ignoring the time and regional differences in business distribution, resulting in low spectrum usage efficiency, heterogeneous wireless networks can make full use of t...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/10
Inventor 高洪元欧振威杜亚男李晨琬程君会张飞笼
Owner HARBIN ENG UNIV
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