Distribution method of united power and channels in cognitive wireless network

A cognitive wireless network and joint power technology, applied in the field of joint power and channel allocation, can solve problems such as difficult implementation, failure to truly realize distributed control power and joint allocation of channels, and failure to fully consider cognitive user mutual interference, etc., to achieve Guaranteed Convergence Effect

Active Publication Date: 2014-05-14
STATE GRID CORP OF CHINA +2
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Problems solved by technology

The above researchers usually consider the iterative solution of unary information (power or channel) by using the non-cooperative game model. The disadvantage is that there is no joint power control and channel selection.
[0026] The shortcomings of the above methods are: first, the joint allocation of distributed control power and channels is not r...

Method used

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  • Distribution method of united power and channels in cognitive wireless network
  • Distribution method of united power and channels in cognitive wireless network
  • Distribution method of united power and channels in cognitive wireless network

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Embodiment

[0127] Aiming at the ad-hoc network model, the present invention distributes and solves the problem of allocating uplink resources (power and channels) in a single multi-channel cognitive wireless network. The type of cognitive user can be mobile phone, car radio, PDA or others. like figure 1 A network simulation system shown is: Cognitive User Randomly distributed in an area of ​​100m*100m, the number of available orthogonal channels K=4, and the maximum number of iterations is 1000. All cognitive users randomly select transmit power and available channels as initialization states. Assuming that all cognitive users can perceive all channels correctly, the resource requests and signaling interaction information of other cognitive users are broadcast in the public control channel accessible to the whole network. Cognitive users can know each other's transmit power and corresponding channel selection information. Because there is no central control, the implementation of th...

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Abstract

The invention discloses a distribution method of united power and channels in a cognitive wireless network. The distribution method of the united power and the channels in the cognitive wireless network comprises the steps that (1) interference between a primary user and a cognitive user on each channel in the multi-channel cognitive wireless network and among cognitive users is quantized and limited; (2) a utility function defining the behavior that each cognitive user is accessed to a frequency spectrum serves as a handling capacity, and the optimal solution of the utility function of the cognitive users is solved in a distributed mode by constructing a non-cooperative game frame so that the performance of the entire network can be optimal; (3) a corresponding price function is introduced to price resource occupation behaviors of the cognitive users, and selfishness of the cognitive users is limited; (4) a potential game model is built by utilizing a non-cooperative game, and astringency of the potential game model is guaranteed. The distribution method of the united power and the channels in the cognitive wireless network has the advantages of solving the problem of distribution of the united power and the channels in a distributed mode by utilizing the price function and the potential game model, and improving distribution fairness of network resources and the utilization efficiency of the frequency spectrum.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a joint power and channel allocation method in a cognitive radio system. Background technique [0002] Cognitive Radio (CR: Cognitive Radio) is a new technology to improve the utilization of spectrum resources. As an intelligent communication system that can perceive the external communication environment, it allows multi-dimensional spectrum multiplexing and sharing in the time domain, frequency domain and air domain. The core idea of ​​CR is: by adjusting network working parameters, under the premise of quantifying and limiting interference to primary users (PUs: Primary Users), allowing secondary users (SU: Secondary User) based on cognitive radio functions, also known as authentication Known users, collectively referred to as cognitive users (CR) in this paper, opportunistically access licensed frequency bands dynamically, so as to improve spectrum...

Claims

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Application Information

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IPC IPC(8): H04W16/10H04W16/14H04W28/08
CPCY02D30/70
Inventor 李洪兵应腾达余华兴黄天聪张电陈刚廖玉祥唐夲徐菁周鼎冯彬
Owner STATE GRID CORP OF CHINA
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