Intelligent distributed spectrum dynamic sharing method based on weighted interference

Abstract

The invention provides an intelligent distributed spectrum dynamic sharing method based on weighted interference. The method comprises the following steps: S1, acquiring a potential interference wireless access node set detected and reported by a wireless terminal node; s2, respectively acquiring one-way potential weighted interference of other wireless access nodes on the wireless access node set based on the potential interference wireless access node set; s3, interacting respective one-way potential weighted interference with other wireless access nodes to obtain corresponding two-way potential weighted interference; s4, acquiring an interference wireless access node set detected and reported by the wireless terminal node; s5, acquiring actual weighted interference based on the bidirectional potential weighted interference and the interference wireless access node set; s6, updating a channel selection probability vector based on actual weighted interference; and S7, detecting that the spectrum environment does not change, and performing channel selection based on the updated channel selection probability vector. According to the invention, the mode that the terminal is actually interfered is reflected through multiplexing weighted interference, more refined interference description is realized, and the frequency spectrum sharing efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of channel selection in wireless networks, in particular to an intelligent distributed frequency spectrum dynamic sharing method based on weighted interference. Background technique [0002] Considering the limited transmission power of wireless network nodes, the range of co-channel interference is usually limited. Therefore, the nodes inside the wireless network can significantly improve the efficiency of spectrum utilization through spatial frequency multiplexing. The key to spatial frequency reuse is to coordinate the frequency usage of nodes within the network, that is, spectrum sharing. Its goal is to minimize frequency conflicts between nodes and give full play to the characteristics of spatial reuse. Existing spectrum sharing methods can be generally divided into two categories: centralized management and distributed sharing. The centralized algorithm relies on a designated controller to allocate th...

AI Technical Summary

Problems solved by technology

For multiple wireless access nodes (such as base stations or APs in wireless local area networks), the nodes can simultaneously accommodate multiple terminal accesses. However, the degree of interference between wireless access nodes depends on the actual distribution of terminals in space. That is to say, the interference relationship is not a simple 0-1 interference, but the specific number of affected terminals, and the above model cannot reflect the actual interference pattern

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