Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A Resource Allocation Method Based on Effective Capacity in Cognitive Radio System

A cognitive radio and effective capacity technology, applied in the field of wireless communication, can solve the problems of not considering the delay QoS requirements, only considering very strict and very loose QoS requirements, etc., to achieve the effect of improving guarantee capability and performance

Active Publication Date: 2017-10-20
永春县产品质量检验所福建省香产品质量检验中心国家燃香类产品质量监督检验中心福建
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Most resource allocation algorithms in existing wireless communication systems do not consider delay QoS requirements or only consider very strict and very loose QoS requirements

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A Resource Allocation Method Based on Effective Capacity in Cognitive Radio System
  • A Resource Allocation Method Based on Effective Capacity in Cognitive Radio System
  • A Resource Allocation Method Based on Effective Capacity in Cognitive Radio System

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0051] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0052] The optimized power allocation scheme based on effective capacity proposed by the present invention is as follows:

[0053] Consider a cognitive radio system, which contains a cognitive user, two sub-channels, sub-channel A and sub-channel B, and the channel model is Rayleigh fading channel and block fading. The frame structure of the cognitive radio system is as follows: figure 1 As shown, where T represents the duration of a frame, that is, the frame length, N represents the duration of channel sensing by cognitive users in each frame, and the first N long-term cognitive users in each frame perform channel sensing.

[0054] Step 1: The two sub-channels perform channel sensing independently without interfering with each other. The first N long-term cognitive users of each frame perform channel sensing to determine whether authorized users occ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention provides a resource allocation method based on effective capacity in a cognitive radio system: cognitive users in the cognitive radio system sense the channel, determine the transmission plan of the cognitive user based on the sensing results, and obtain recognition based on the transmission plan. Know the effective capacity in the radio system, and optimize the effective capacity under the condition of limited average power. By using the gradient descent method to solve the dual problem of the optimization problem, the optimal power allocation strategy is obtained. The present invention is consistent with the traditional Compared with the equal-power solution, the performance of the system is improved, and the QoS guarantee capability of the system is improved. In a multi-channel scenario, it can not only provide reliable QoS guarantee for cognitive users, but also improve the spectrum utilization of the system. .

Description

technical field [0001] The invention belongs to the resource allocation scheme design of a cognitive radio system in the wireless communication field, and relates to a resource allocation method based on effective capacity in a cognitive radio system. Background technique [0002] Due to the rise of various new services, such as telephone and video conferencing, intelligent services, etc., spectrum resources have become a scarce resource. Although the link adaptive technology and multi-antenna technology that have emerged in recent years can improve spectrum utilization, research shows that some licensed frequency bands, especially low frequency bands with better signal propagation characteristics, have extremely low spectrum utilization. In order to improve spectrum utilization and effectively utilize idle licensed frequency bands in different regions and at different times, cognitive radio has received more and more attention. The basic idea of ​​cognitive radio is to all...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04W16/14H04W52/04H04W52/24H04W72/08H04W72/54
Inventor 吕刚明张培李国兵张国梅
Owner 永春县产品质量检验所福建省香产品质量检验中心国家燃香类产品质量监督检验中心福建
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com