A Spectrum Allocation Method for Cognitive Radio Networks Based on Spectrum Potential Benefits

Abstract

The invention discloses a cognitive radio network spectrum allocation method based on spectrum potential benefits, which collects spectrum available information and network interference information and initializes; the network interference topology map can be obtained according to the available spectrum in the network and the interference between secondary users ; Calculate the secondary user allocation priority label, calculate the potential system benefit value of the spectrum and the corresponding user's <效益，损失>value, and calculate the priority label value of each user in the corresponding sub-allocation process; according to the priority label value of each user, select the secondary user with the largest label value to allocate the current available spectrum; update the topology structure; when <效益，损失>When the collection is empty, the current sub-allocation process ends. The invention has the beneficial effects of effectively reducing the potential system benefit loss that may be brought about in the spectrum allocation process, obtaining better system benefits, and improving the spectrum utilization rate.< / 效益，损失>

Description

technical field [0001] The invention belongs to the technical field of wireless networks, and relates to a spectrum allocation method for a cognitive radio network based on spectrum potential benefits. Background technique [0002] Due to the possible existence of interference or sharing among secondary users, the sequence of spectrum allocation directly affects the final result of spectrum allocation. The traditional spectrum allocation algorithm, based on the greedy criterion, will preferentially select the node with the largest benefit value to allocate the frequency band, because there is co-channel interference between the current secondary user and other secondary users. Therefore, in the future allocation process, the frequency spectrum cannot be allocated to other secondary users. In the current allocation process, only the system benefit brought by the current allocation operation is considered, while the potential system benefit loss in the future allocation proce...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a cognitive radio network spectrum allocation method based on spectrum potential benefits, which solves the problem of low system benefits commonly found in traditional spectrum allocation algorithms based on graph coloring models

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