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Cognitive relay network combined relay selecting and resource distributing method capable of supporting mutual information accumulation

A technology of cognitive relay and resource allocation, applied in the field of joint relay selection and resource allocation of cognitive relay network supporting mutual information accumulation

Active Publication Date: 2017-06-30
CHONGQING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to propose a cognitive relay network joint relay selection and resource allocation method that supports mutual information accumulation; this method solves the technical problems of relay selection and spectrum and power allocation in existing cognitive wireless networks ; It can effectively realize the sharing of spectrum resources in the cognitive network and improve the utility of the entire network

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  • Cognitive relay network combined relay selecting and resource distributing method capable of supporting mutual information accumulation
  • Cognitive relay network combined relay selecting and resource distributing method capable of supporting mutual information accumulation
  • Cognitive relay network combined relay selecting and resource distributing method capable of supporting mutual information accumulation

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Embodiment Construction

[0059] The present invention will be further described below in conjunction with drawings and embodiments.

[0060] as the picture shows, figure 1 It is a cognitive relay network system model diagram. In the cognitive relay network that supports mutual information accumulation provided in this embodiment, there are multiple master users and slave users in the cognitive radio network. The master and slave users share spectrum resources for information For transmission, each master user occupies the corresponding authorized frequency band for communication, and each slave user pair communicates in a cooperative transmission mode without interfering with the master user's communication, and all nodes in the slave network can accumulate mutual information. If the source-destination node pair intends to communicate, the service request needs to be sent to the resource management entity, and the resource management entity executes the joint relay selection and resource allocation al...

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Abstract

The invention discloses a cognitive relay network combined relay selecting and resource distributing method capable of supporting mutual information accumulation. Particularly, the method comprises the steps of sharing a spectrum resource by main users and auxiliary users of a cognitive relay network for performing information transmission, occupying a corresponding authorized frequency band by each main user for performing communication, performing communication in a cooperative transmission manner on the condition that communication of the main users is not interfered by each auxiliary user, performing mutual information accumulation by all nodes in the network, receiving a service request of each auxiliary user by a resource management entity, executing a combined relay selecting and resource distributing algorithm, and on the condition that an optimization limiting condition is satisfied, optimizing and determining relay node selection, source node and relay node transmission powers and a sub-channel distribution strategy based on a combined transmission power minimizing principle. The cognitive relay network combined relay selecting and resource distributing method can effectively realize relay selection and node transmission performance optimization in the cognitive relay network and realizes network performance optimization.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a cognitive relay network joint relay selection and resource allocation method supporting mutual information accumulation. Background technique [0002] The rapid development of wireless communication technology makes the wireless network present the characteristics of high speed, broadband, heterogeneity, etc., and also brings a series of severe challenges, the most urgent of which is the continuous growth of user demand for spectrum resources, resulting in The existing statically allocated licensed frequency bands can no longer meet the communication needs of users. But on the other hand, some allocated licensed 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 resources and alleviate the shortage of spectrum resources, cognitive radio technology using...

Claims

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Application Information

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IPC IPC(8): H04W16/14H04W40/22H04W52/24H04W52/30H04W72/04
CPCH04W16/14H04W40/22H04W52/243H04W52/30H04W72/53Y02D30/70
Inventor 柴蓉高远鹏陈前斌
Owner CHONGQING UNIV OF POSTS & TELECOMM
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