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

High-energy-efficiency relay selection method in energy constraint cooperative communication system

A collaborative communication, energy-limited technology, applied in the field of communication, can solve the problems of power exhaustion, the energy resources of relay nodes cannot be fully utilized, etc., and achieve the effect of improving energy efficiency

Inactive Publication Date: 2013-10-23
XIDIAN UNIV
View PDF2 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For existing relay selection algorithms that only consider channel state information, relay nodes with better channel conditions are often overused, resulting in premature exhaustion of their power, resulting in the inability to fully utilize the energy resources of other relay nodes

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
  • High-energy-efficiency relay selection method in energy constraint cooperative communication system
  • High-energy-efficiency relay selection method in energy constraint cooperative communication system
  • High-energy-efficiency relay selection method in energy constraint cooperative communication system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] Below in conjunction with accompanying drawing the embodiment of the present invention is described in detail: the present embodiment is implemented under the premise of the method of the present invention, has provided detailed embodiment and concrete operation step, but protection scope of the present invention is not limited to following the embodiment.

[0025] The model of the multi-source multi-relay cooperative communication system adopted by the present invention is as follows: figure 1 shown, where S 1 ,…S l ,...,S M is the set of source nodes, R 1 ,...R j ,...,R K is a set of relay nodes, D is a destination node, and the number K of relay nodes is not less than the number M of source nodes, that is, K≥M. Each source node selects only one relay node to communicate with the destination node, and each relay node serves only one source node. All communication nodes adopt single antenna and work in time division duplex mode.

[0026] refer to figure 2 , t...

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 relay selection method in an energy constraint cooperative communication system. The relay selection method comprises the following realization steps that (1) M source nodes utilize K energy constraint relay nodes to carry out cooperative communication with target nodes D; (2) one relay node with the least rest energy is found and is marked as R*; (3) the life cycle T<S1R> of a link from S1 to R* to D is constructed; (4) the source nodes are ranked according to the T<S1R> in sequences from small ones to large ones, a new set S is obtained, a node counter is set, in addition, the initial value m of the node counter is set to be zero; (5) m is increased by 1, and the life cycle T<SmRj> of the link is constructed; (6) the relay node corresponding to the maximum value of the T<SmRj> is marked as Rm; (7) steps (5) to (6) are repeated until m is equal to M, the relay nodes Rm are ranked according to subscripts in sequences from small ones to large ones, and a new set R is obtained; and (8) the resource nodes in the set S are selected to carry out cooperative communication with the relay nodes with the same subscripts in the set R. The relay selection method has the advantages that the energy efficiency is high, the realization complexity is low, and the relay selection method can be used for the cooperative communication system in energy constraint environment.

Description

technical field [0001] The invention belongs to the communication field, and relates to a relay selection method of an energy-limited cooperative communication system, which can be used to improve the energy efficiency of a multi-relay cooperative communication system. Background technique [0002] Multiple-input multiple-output MIMO technology can make full use of space resources, and can effectively resist the fading of wireless channels without increasing the system bandwidth and transmission power, thereby improving the spectrum utilization of the communication system. However, in some practical application scenarios, such as the uplink of cellular systems, wireless ad hoc networks and wireless sensor networks, mobile terminals or network nodes are limited by their own size, complexity and power consumption, so it is difficult to directly apply MIMO technology. Therefore, a new space diversity technology - cooperative diversity technology emerges at the historic moment. ...

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
IPC IPC(8): H04W40/22H04W52/04H04B7/04
CPCY02B60/50Y02D30/70
Inventor 高洋葛建华高明张南付少忠岳安军
Owner XIDIAN UNIV
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