A Cognitive Radio Network Bandwidth and Power Joint Allocation Method Based on Game Theory
A cognitive radio and joint allocation technology, which is applied in network planning, wireless communication, electrical components, etc., can solve problems such as the inability to realize the joint performance optimization of master-slave users, without considering the optimal allocation of spectrum for slave users and the benefits of master users, etc., to achieve Combined performance optimization, to achieve the effect of data transmission
Active Publication Date: 2016-04-06
CHONGQING UNIV OF POSTS & TELECOMM
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This method only considers the optimization of the transmission power of the slave user to maximize its transmission rate, does not consider the optimal allocation of the spectrum of the slave user and the income of the master user, and cannot realize the joint performance optimization of the master-slave user
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[0017] In order to make the objectives, technical solutions and advantages of the present invention more clearly expressed, the following further describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
[0018] figure 1 Shown is a schematic diagram of bandwidth and power allocation of the master-slave user cooperation mechanism implemented by the present invention. Among them, (a) main user spectrum division diagram, (b) secondary user power division diagram.
[0019] According to the main user's own communication and the cooperation of the slave user to forward the bandwidth W 1 , From the user to realize their own transmission demand bandwidth W 2 , Determine the total bandwidth of the main user W=W 1 +W 2 , 0≤W 1 ,W 2 ≤W; According to the power P of forwarding data from the user to the main user 1 ,Transmit its own data power P from the user 2 , Determine that the total transmit power of the slave user is P=P 1 +P 2 And 0≤P ...
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The invention discloses a cognitive radio network bandwidth and power joint allocation method based on the game theory, belongs to the field of cognitive networks. The allocation method is characterized in that primary users and secondary users establish a cooperative transmission mechanism, the primary users divide part of band for the primary users and secondary users cooperative transmission, and the rest band is used for users realizing own communicating requirements; the secondary users divide part of transmitting power for data forward, and the rest transmitting power is used for realizing own communicating requirements. According to the allocation method, the primary users and the secondary users are determined to be game participators, share spectrum of the primary users and forward power of the secondary users are strategy space for establish payoff functions for the primary users and the secondary users. An optimal strategy of the spectrum and the power joint allocation is obtained through figuring out a game model Nash equilibrium. By the aid of the cognitive radio network bandwidth and power joint allocation method, share of spectrum resource and power resource can be realized effectively, and spectrum utilization rate and network capacity are increased.
Description
Technical field [0001] The invention relates to the field of wireless communication, in particular to a method for cooperative communication between a master-slave user and a cognitive radio. Background technique [0002] With the advent of the information age, wireless networks are playing an increasingly important strategic role in national economic development and have penetrated into all areas of society. The rapid development of wireless technology has made wireless networks present the characteristics of high-speed, broadband, and isomerization. At the same time, they have brought a series of severe challenges. The most urgent one is the continuous increase of users' demand for spectrum resources. The traditional fixed spectrum allocation method has led to fierce competition in some frequency bands and a serious shortage of spectrum resources. On the other hand, a large amount of allocated spectrum in some frequency bands is not fully used, resulting in low spectrum utiliza...
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IPC IPC(8): H04W16/14H04W72/04
CPCY02D30/70
Inventor 陈前斌李锦红柴蓉
Owner CHONGQING UNIV OF POSTS & TELECOMM