Frequency spectrum admission control method based on cooperative frequency spectrum sensing

A technology of admission control and cooperative spectrum, which is applied in the field of spectrum admission control based on cooperative spectrum sensing, can solve the problems of not considering the impact, not considering the error detection probability of spectrum sensing accuracy, etc.
CN102685754BInactive Publication Date: 2015-07-08SHANGHAI JIAO TONG UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI JIAO TONG UNIV
Publication Date
2015-07-08
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention provides a frequency spectrum admission control method based on cooperative frequency spectrum sensing. The method comprises the following steps: (1) through a cooperative scheme based on a secondary user group (SUG), self-adapting each secondary user SU to form SUGs; (2) for a cooperative sensing fusion strategy, carrying out calculation on a source node SUsor through a cooperative frequency spectrum sensing scheme so as to obtain an optimal value k under the situation of a given n value; and (3) for an acceptance control threshold of a cognitive radio network, analyzing an optimal acceptance control threshold, which can maximize throughput of the SUGs under the restriction condition of global false alarm probability, through a frequency spectrum acceptance control scheme based on cooperative sensing; and through solving of the optimal acceptance control threshold, finishing the whole optimizing process. According to the invention, the frequency spectrum frequency of the network is very well improved and the throughput of the SUGs can be also effectively increased; and the frequency spectrum acceptance control method based on cooperative frequency spectrum sensing, provided by the invention, is applicable to frequency spectrum access and frequency spectrum switching strategies in the cognitive radio network as well as corresponding performance analysis.
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Description

technical field

[0001] The present invention relates to the technical field of wireless communication, in particular to a spectrum admission control method based on cooperative spectrum sensing. Background technique

[0002] In a wireless network, admission control is mainly used to limit the number of users running in the system, so that the system will not make the limited spectrum resources of the system very crowded due to the access of too many users. The two main objectives of admission control are: (1) to ensure the quality of service (Quality of Service, QoS) of users who are communicating in the system and users who have just connected to the system; (2) to distinguish the priority of different users in different service levels. The purpose of admission control is to maximize the utility function of the system in the admission area.

[0003] In cognitive wireless networks, admission control focuses on prioritizing primary users (Primary Users, PUs) and secondary us...

Claims

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