Check patentability & draft patents in minutes with Patsnap Eureka AI!

Broadband Cognitive Network Communication Method Based on Multi-channel Synchronous Cooperative Spectrum Sensing

A technology of cooperative spectrum sensing and cognitive network, applied in the field of broadband cognitive network communication, can solve the problem of reducing spectrum access of cognitive network

Inactive Publication Date: 2018-04-24
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: to solve the current cognitive network cooperative spectrum sensing, each sub-channel signal can only sense one channel within the sensing time, resulting in only the only channel for communication within the transmission time, thereby greatly reducing Drawbacks of Spectrum Access for Cognitive Networks

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
  • Broadband Cognitive Network Communication Method Based on Multi-channel Synchronous Cooperative Spectrum Sensing
  • Broadband Cognitive Network Communication Method Based on Multi-channel Synchronous Cooperative Spectrum Sensing
  • Broadband Cognitive Network Communication Method Based on Multi-channel Synchronous Cooperative Spectrum Sensing

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0067] like figure 2 As shown, the frame structure of the cognitive network of the present invention is composed of sensing time slots, cooperation time slots and transmission time slots, the perception time slots are divided into several perception sub-slots, and the cooperation time slots are further divided into several cooperation sub-slots . Each sub-channel signal synchronously detects the primary user on multiple sub-channels in multiple sensing sub-slots of the sensing time slot, and exchanges respective sensing information in the corresponding coordinated sub-slots allocated in the cooperative time slot. By fusing the sensing information of all nodes information and use the energy detection method to finally determine whether the primary user exists in the spectrum. If it is finally judged that the primary user does not exist, the cognitive network accesses the spectrum of the primary user in the transmission time slot and communicates, otherwise the cognitive netwo...

specific Embodiment approach 2

[0106] A simplified method is given below:

[0107] 1) Divide the entire broadband of the primary user into L sub-channels, measure each sub-channel signal n (n=1,2,…,N) and receive the signal on the sub-channel l (l=1,2,…,L) The signal-to-noise ratio of γ n,l , the highest frequency f of the primary user signal s and the minimum number of sampling points M required to perceive the primary user, and the noise variance on the sub-channel l (also the average power of the noise) Determine the detection threshold λ l is the maximum power of the noise on the subchannel.

[0108] 2) Calculate the average received signal-to-noise ratio of each sub-channel signal n according to Sort the sub-channel signals from large to small, search for k one by one from 1 to N, and find k so that the function:

[0109]

[0110] The maximum value is obtained, and the top k nodes with the largest signal-to-noise ratio are selected to participate in cooperative spectrum sensing.

[0111] 3...

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 invention discloses a broadband cognitive network communication method on the basis of multichannel synchronous cooperation spectrum sensing. A frame structure of a cognitive network consists of a sensing time slot, a cooperation time slot and a transmission time slot; the sensing time slot is divided into a plurality of sensing sub time slots; the cooperation time slot is divided into a plurality of cooperation sub time slots; all sub channel signals synchronously detect master users on a plurality of sub channels in the sensing sub time slots of the sensing time slot, interact respective sensing information in the correspondingly-distributed cooperation sub time slots of the cooperation time slot and finally, judge whether the master users exist in a frequency spectrum or not by fusing the sensing information of all cooperation node sequence numbers. The broadband cognitive network communication method overcomes the defect that in the current cooperation spectrum sensing, only one channel can be sensed; by synchronously sensing and utilizing a plurality of sub channels, spectrum access of the cognitive network is obviously improved.

Description

technical field [0001] The invention discloses a broadband cognitive network communication method based on multi-channel synchronous cooperative spectrum sensing, and relates to the technical field of radio communication. Background technique [0002] The overall planning and allocation of spectrum resources in modern wireless communication systems is determined by radio management agencies. Currently, the principles and solutions based on static (fixed) frequency band allocation are adopted. In recent years, the communication industry has widely recognized that fixed frequency band allocation is the key to the current scarcity of spectrum resources. one of the main reasons. At present, in the spectrum allocation and use below 3GHz, the competition for spectrum resources is very fierce, but the use of spectrum above 3GHz is obviously different, that is, from the dual perspectives of time domain and air domain, there are still Lots of vacant frequency bands that are underuti...

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): H04W16/14H04B17/382
CPCH04W16/14
Inventor 刘鑫闫钧华孔繁锵贾敏井庆丰仲伟志陈琨奇
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com