Method and system for selecting collaboration relay node

A relay node and node selection technology, applied in the field of wireless communication, to achieve the effect of maximizing the life cycle and prolonging the survival time

Inactive Publication Date: 2009-11-11
BEIJING UNIV OF POSTS & TELECOMM
View PDF0 Cites 32 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Obviously, it is unrealistic to charge or replace the batteries of thousands of sensor nodes, not to mention some environments that are inconvenient for people to enter (such as bat...

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
  • Method and system for selecting collaboration relay node
  • Method and system for selecting collaboration relay node
  • Method and system for selecting collaboration relay node

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0029] Cooperative relay is also called cooperative diversity, and its principle comes from the idea of ​​"virtual antenna array". Cooperative relay is an extension of single-path relay. One or more nodes with a common coverage area can be introduced between the source node and the destination node to act as relay nodes. The destination node can combine the information from the source node and the relay node. data. Cooperative relay can improve the transmission rate and transmission reliability of wireless links, and at the same time, it can improve the spectrum efficiency and wide-area coverage of the entire wireless mesh network. For energy-constrained wireless networks, it can be considered that under the same system capacity requirements, cooperative relay technology can reduce the required transmission energy

...

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 relates to a method for selecting a collaboration relay node, which comprises the following steps of: broadcasting RTS information comprising current energy of a source node and an address of a destination node at the source node; calculating the rest energy after participating the collaboration by self and the rest energy of the source node according to the current energy and the channel state of the source node at a potential relay node which receives the RTS information, judging whether the self rest energy is lower than the rest energy of the source node or not and participating the collaboration competition if the result is positive; receiving competition information sent by the potential relay node at the destination node, and selecting the potential relay node which leads the rest energy of the source node maximum as the relay node and broadcasting CTS information to notify the relay node to participate the transmission. The method considers the energy consumption of a whole network for implementing the whole application, utilizes the collaboration transmission technique to maximize the rest energy of all nodes for participating the transmission in each transmission and leads the rest energy of all nodes in the network to obtain the balance, thereby maximizing the life cycle of the whole network.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method and system for selecting a cooperative relay node. Background technique [0002] With the rapid development and maturity of low-power radio communication technology, embedded computing technology and micro-sensor technology, a large number of low-cost micro-sensors self-organize into a Wireless Sensor Network (WSN) through wireless links. Become reality. Compared with traditional wired sensor networks (such as fire sensor networks in office buildings, etc.), wireless sensors have the characteristics of flexible placement, easy expansion, mobile nodes and self-organizing networks. Especially in the environment where people cannot or avoid entering, wireless sensors can be thrown to the area to be monitored by helicopter or rocket. The sensors organize themselves into a wireless network, perceive the information of their environment and transmit it ...

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): H04W40/08H04W84/10
CPCY02D30/70
Inventor 康桂霞张平郭艳艳丁子明于旸
Owner BEIJING UNIV OF POSTS & TELECOMM
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap