Cognitive cooperative network joint resource allocation method based on utility optimization

A collaborative network and resource allocation technology, applied in the field of wireless communication, can solve problems such as service experience impact, failure to achieve network performance optimization, and failure to consider user energy consumption

Active Publication Date: 2014-08-20
CHONGQING UNIV OF POSTS & TELECOMM
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0007] Existing research mainly focuses on maximizing system throughput, without considering user energy consumption, which may lead to low user energy efficiency. For a large number of users, especially those using energy-sensitive terminals, the service experience will be seriously aff

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  • Cognitive cooperative network joint resource allocation method based on utility optimization
  • Cognitive cooperative network joint resource allocation method based on utility optimization
  • Cognitive cooperative network joint resource allocation method based on utility optimization

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Embodiment Construction

[0017] In order to express the object, technical solution and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation cases. The present invention adopts following technical scheme to realize:

[0018] Assume that there are K primary users and N secondary users in the network coverage area, each primary user occupies a licensed frequency band, each licensed frequency band can be divided into multiple sub-channels, and the bandwidth of each sub-channel is assumed to be W. Multiple groups of secondary users can choose to occupy an authorized sub-channel for communication without interfering with the primary user and without interfering with each other. figure 1is a case scenario diagram.

[0019] figure 2 It is a flow chart of the joint resource allocation method for cognitive collaboration network based on network utility optimization proposed b...

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Abstract

The invention discloses a cognitive cooperative network joint resource allocation method based on utility optimization. According to the method, master and slave users of a cognitive radio network share spectrum resources and perform information transmission, the master users occupy corresponding authorized frequency bands to communicate, and the slave users communicate through a direct transmission or cooperative transmission mode under the condition of without interfering with communication of the master users. A network resource scheduler receives service requests of the slave users, models a slave user joint utility function, and realizes optimized allocation of sub channels and transmission power of the slave users and optimized selection of relay modes in cooperation based on the rule of utility maximization. According to the invention, cognitive cooperative network spectrum resource sharing can be effectively realized, and the overall network performance can be improved.

Description

technical field [0001] The present invention relates to the field of wireless communication technology, in particular to the resource allocation technology of cognitive cooperative network. Background technique [0002] With the rapid development of wireless communication technology and the rapid popularization of wireless devices, wireless networks play an increasingly important role in national economic development and have penetrated into various fields of society. The rapid development of wireless technology makes the wireless network present the characteristics of high speed, broadband, and heterogeneity, and also brings a series of severe challenges. The statically allocated certified frequency bands can no longer meet the communication needs of users. But on the other hand, some of the allocated certified frequency bands are not fully used in some time or areas, resulting in low spectrum utilization. In order to effectively improve the utilization rate of spectrum r...

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Application Information

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IPC IPC(8): H04W16/14H04W72/04
Inventor 柴蓉孙晓陈前斌王盼盼
Owner CHONGQING UNIV OF POSTS & TELECOMM
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