Method for establishing control channel of hierarchical spectrum sharing network

Abstract

The invention relates to a method for establishing a control channel of a hierarchical spectrum sharing network. In the hierarchical spectrum sharing network, the number of high priority users is N, the number of hierarchical spectrum sharing users is H, and a frequency band F capable of being supported by a radio-frequency head can be averagely divided into M sub-channels. The method is characterized by comprising the following steps: S1, sorting the M sub-channels by calculating a perceptible high priority user channel weight by the hierarchical spectrum sharing users; S2, establishing the hierarchical spectrum sharing users accessing the same channel into the same cluster, and taking the channel as a local control channel of the cluster; and S3, managing multiple functions of different time slots of the clustered hierarchical spectrum sharing users through MAC protocol design. The method has the advantages that: the local control channel is established in the hierarchical spectrum sharing network through the steps for signal interaction of the hierarchical spectrum sharing users so as to effectively solve the problem that a public control channel does not exist in cognitive radio.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a method for establishing a control channel of a hierarchical frequency spectrum sharing network. Background technique [0002] The hierarchical spectrum sharing network proposes a hybrid network based on cognitive radio. Cognitive radio is also called smart radio. In a broad sense, it means that wireless terminals have sufficient intelligence or cognitive ability. Carry out detection, analysis, learning, reasoning and planning, use the corresponding results to adjust its own transmission parameters, and use the most suitable wireless resources (including frequency, modulation mode, transmission power, etc.) to complete wireless transmission. like figure 1 , the gap between the interference temperature and the interference temperature limit of each cognitive user in cognitive radio is different in space, time and frequency. Therefore, the transmission power allowe...

AI Technical Summary

Problems solved by technology

[0006] In a hierarchical spectrum sharing network, hierarchical spectrum sharing users use an out-of-band spectrum as a common control channel for command interaction, but due to the limited bandwidth of the out-of-band spectrum and the diversity of communication methods, the interaction mechanisms of a large number of different signaling As a result of the congestion of the control channel, how to coordinate and control the user access and effectively use the spectrum resources without conflict is a very important issue. However, in the cognitive radio system, there is no fixed available spectrum except for the out-of-band control channel, so it is necessary to design A new signaling interaction mechanism or finding a new control channel to relieve the congestion of the common control channel

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