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Control method of multi-user dynamic layering power in cognitive radio network

A cognitive wireless network and power control technology, which is applied in the field of multi-user dynamic hierarchical power control, can solve the problems of high signaling overhead and many interactions, and achieve the effect of less interactions and avoiding dishonesty

Active Publication Date: 2013-10-16
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the spectrum resource allocation method based on cooperative game has many interactions and high signaling overhead

Method used

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  • Control method of multi-user dynamic layering power in cognitive radio network
  • Control method of multi-user dynamic layering power in cognitive radio network
  • Control method of multi-user dynamic layering power in cognitive radio network

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Experimental program
Comparison scheme
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Embodiment Construction

[0038] Attached below figure 1 And attached figure 2 The present invention is further described.

[0039] Step 1, user classification

[0040] According to the time sequence of multiple cognitive users accessing the investigated spectrum in the current cognitive wireless network, determine multiple leader users and multiple follower users;

[0041] Step 2, leader parameter preparation

[0042] 2a) Initialize power: Randomly initialize power level parameters on multiple channels for each leader user;

[0043] 2b) Initialize the water injection level: for each leader, initialize its water injection level parameters randomly;

[0044] Step 3, Execute Leader Strategy

[0045] 3a) Each leader obtains environmental information by means of learning and training, including channel gain information and total interference power information that the leader can feel;

[0046] 3b) Calculate the leader's next power level;

[0047] p i ...

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Abstract

The invention discloses a control method of multi-user dynamic layering power in a cognitive radio network. The method comprises the following steps: firstly a leader user and a follower user are determined according to the condition that multiple cognitive users are accessed into the currently investigated frequency spectrum in the current cognitive network in different sequences; different power control strategies are adopted to the leader and follower respectively, and multiple interaction interactions are carried out to realize dynamic interactive convergence of multi-user layering algorithm. Aiming at the phenomena that laying strategies and information given in false exist in multiple cognitive users in actual communication process can not be described in the prior art, the invention provides a control method of multi-user dynamic layering power in the cognitive radio network. Multi-step strategy interaction of the leader and the follower is realized through respectively designing a distributed power control method for the multiple users mastering asymmetrical information in the cognitive wireless network, thus the dishonest behavior of the cognitive users is avoided, and meanwhile, the interactive times are less, the mutual benefits between multiple users are realized by adopting a small amount of signaling expense.

Description

technical field [0001] The invention belongs to the technical field of communication, and further relates to a multi-user dynamic hierarchical power control method in a cognitive wireless network. The method realizes the hierarchical optimal power control when there is information asymmetry between multiple cognitive users in the cognitive wireless network, and effectively improves the performance of the cognitive wireless network. Background technique [0002] Cognitive radio technology is a new idea and research hotspot in the development of wireless communication. Wireless communication devices with cognitive functions (cognitive devices) realize the selective use of licensed spectrum holes by sensing the wireless environment, learning and reasoning to update the knowledge base, predicting behavior, and dynamically designing transmission strategies, thereby effectively improving spectrum utilization. With the continuous popularization of current network technology and co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W16/10H04W52/24H04W52/34
Inventor 杨春刚李建东盛敏李维英李红艳刘勤李小亚张炎
Owner XIDIAN UNIV