Efficient and energy-saving cooperation perception scheduling method based on heterogeneous users in cognitive radio

Abstract

The invention provides an efficient and energy-saving cooperation perception scheduling method based on heterogeneous users in cognitive radio. The method mainly comprises the following steps of: constituting a cognitive radio network by a plurality of primary users and a plurality of secondary users, and collecting network parameter information by a base station; initializing a cooperation perception scheduling scheme, namely initializing the cooperation scheme according to an optimization initialization method; adjusting the cooperation perception scheduling scheme according to an optimization maximization principle, namely adjusting the cooperation scheme in a concentrated adjusting method or a multi-oligarch adjusting method according to specific conditions of a system on the basis of the scheme initialization; and adjusting and iterating till the adjusted cooperation scheme is as same as the cooperation scheme before the adjustment. The efficient and energy-saving cooperation perception scheduling method takes actual conditions of the heterogeneous primary users (PUs) and the heterogeneous secondary users (SUs) into account and also takes the compromise of energy consumption efficiency and perception accuracy into account, and the algorithm provided by the invention can obtain a stable overall suboptimal solution in frequency spectrum cooperation perception scheduling by short time and less calculation.

Description

technical field [0001] The present invention relates to a method in the technical field of communication, in particular to a cooperative sensing scheduling method based on heterogeneous users in cognitive radio, which is highly efficient and energy-saving. Background technique [0002] On the one hand, with the widespread use of radio, spectrum occupation makes spectrum resources more and more precious. On the other hand, with the continuous development of radio technology, more flexible access methods are provided for mobile users. In cognitive radio networks, there are two types of users: primary users (PU) and secondary users (SU). The primary user is an authorized user who can access the channel at any time without any interference. Secondary users are unauthorized users who do not have access and service quality guarantees, but have greater flexibility to choose different operators to access. Therefore, based on cognitive radio technology, secondary users can use uno...

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Problems solved by technology

Secondary users are unauthorized users and do not have access and service quality guarantees, but have greater flexibility to choose different operators to access

However, this paper only considers the optimal strategy under the isomorphic secondary user SU, and in practice, the properties of the secondary user SU's perception ability and perceived energy consumption are often different.

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