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Multi-task crowd sensing-based collaborative spectrum sensing method

A technology of cooperative spectrum sensing and crowd sensing, which is applied in the field of collaborative spectrum sensing based on multi-task crowd sensing, can solve problems such as scenarios that do not take multi-person perception and multi-task into account, and achieve the effect of improving sensing enthusiasm and ensuring utility

Active Publication Date: 2018-05-11
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

Most of the current literature on the incentive mechanism of crowd sensing does not consider the scenario of multi-person sensing and multi-tasking, nor does it concretize the scenario of crowd sensing into collaborative spectrum sensing.

Method used

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  • Multi-task crowd sensing-based collaborative spectrum sensing method
  • Multi-task crowd sensing-based collaborative spectrum sensing method
  • Multi-task crowd sensing-based collaborative spectrum sensing method

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Embodiment Construction

[0031] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings. figure 1 It is a flow chart of a method for collaborative spectrum sensing based on multi-task crowd sensing for the technical solution of the present invention.

[0032] The basic idea of ​​the present invention is to apply multi-task group intelligence sensing to collaborative spectrum sensing to solve the problem of recruiting and motivating secondary users. The number of sampling points of secondary users participating in cooperative spectrum sensing is optimized to obtain the optimal utility. The method is to apply the crowd sensing incentive mechanism to cooperative spectrum sensing, establish the utility function of secondary users, optimize the number of sampling points in the utility function, so as to optimize the utility of secondary users, encourage secondary users to participate in spectrum sensing, and improve the detection proba...

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Abstract

The invention discloses a multi-task crowd sensing-based collaborative spectrum sensing method. According to the method, a crowd sensing excitation mechanism is applied to the cooperative spectrum sensing, and a secondary user utility function is established. The number of sampling points in the utility function is optimized, so that the utility of secondary users is optimal. The secondary users are stimulated to participate in the spectrum sensing process, so that the detection probability is improved. The method comprises the following specific steps of firstly, establishing a utility function of participatory sensing secondary users; figuring out the optimal utility of secondary users by calculating the number of optimal sampling points of secondary users, selecting participatory sensing secondary users by adopting a greedy algorithm under the condition of limited budget, issuing a certain reward after the completion of the secondary user sensing process, and stimulating the sensingenthusiasm of users.

Description

technical field [0001] The invention belongs to the technical field of communication, and relates to a cooperative spectrum sensing method based on multi-task group intelligence sensing. Background technique [0002] In order to improve the utilization efficiency of wireless spectrum, cognitive radio technology is widely used in wireless communication technology. Among them, the cognitive radio technology mainly includes various technologies such as spectrum sensing, spectrum management and sharing. Spectrum sensing means that a spectrum has been allocated to a user, but the user does not use the spectrum at certain times and locations. In order to allow some unlicensed users to use the frequency spectrum in a specific area to improve spectrum utilization, some secondary users can be arranged to sense the spectrum usage in this area. Spectrum sensing technology can be divided into single-user sensing and cooperative spectrum sensing according to the number of people sensin...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/30H04B17/391
CPCH04B17/30H04B17/391
Inventor 朱琦吕鑫鑫朱洪波杨龙祥
Owner NANJING UNIV OF POSTS & TELECOMM
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