Method for selecting cooperative nodes in wireless communication network

A wireless communication network and node selection technology, applied in wireless communication, transmission systems, electrical components, etc., can solve the problem of only a single antenna, achieve the effects of reducing bit error rate, increasing channel capacity, and avoiding collisions

Inactive Publication Date: 2009-10-14
SHANDONG UNIV
View PDF0 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Transmit diversity in wireless communication generally requires the use of multiple antennas at the transmitting end, but many wireless devices usually only have a single antenna due to size or hardware complexity constraints

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 for selecting cooperative nodes in wireless communication network
  • Method for selecting cooperative nodes in wireless communication network
  • Method for selecting cooperative nodes in wireless communication network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] The present invention will be further described below in comparison with the accompanying drawings and embodiments.

[0035] Figure 5 In, a method for selecting cooperative nodes in a wireless communication network:

[0036] Select the node with the smallest product L*D between the distance L between the source and the idle node and the distance D between the idle node and the destination among all the neighboring idle nodes as the best relay node. The specific steps are as follows:

[0037] 1) The source S sends a relay request to surrounding nodes;

[0038] 2) If the node is idle, send a response signal; if there is no idle node, continue to step 1);

[0039] 3) If there is only one idle node, go to step 6) and directly adopt the AF or DF coordination mode;

[0040] 4) If there are multiple idle nodes, the source S can calculate the distance L from these idle nodes according to the signal strength, time difference, angle or GPS information; then the idle node sends a mes...

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 method for selecting cooperative nodes in a wireless communication network, which can effectively improve cooperative diversity performance as well as the transmission capacity and reliability of the wireless communication system and ensure the requirement of the quality of service (QoS) of users. The method comprises the following steps: (1) an information source S sends relay requests to nodes around; (2) if the nodes are in leisure, a response signal is sent, and if no leisure node exists, the step (1) is continued; (3) if only one leisure node exists, the operation is switched into the step (6), and an AF or DF cooperative mode is directly adopted; (4) if a plurality of leisure nodes exist, the information source S calculates the distance L between the information source S and the leisure nodes according to the strength of a utilization signal, time difference, angle or GPS information, and then the leisure nodes send information to a target terminal, calculate the distance D between the leisure nodes and the target terminal according to the signal strength, the time difference, the angle or the GPS information and feed back the distance to the information source S; (5) the leisure node with the minimum product of the distance L and the distance D is selected as an optimum relay node; and (6) finally the system adopts the AF or DF cooperative mode.

Description

Technical field: [0001] The invention relates to a method for selecting a cooperative node in a wireless communication network, and belongs to the technical field of wireless communication. Background technique: [0002] With the development of wireless communication network technology, various wireless communication technologies have emerged one after another, which has made the available spectrum resources increasingly saturated. However, people's requirements for wireless communication systems are still increasing, and a wireless communication technology with higher transmission rate, lower cost, lower power, and stronger anti-interference ability is expected. However, in order to improve the performance of the wireless network communication system, diversity is usually required at the transmitting end. The transmit diversity in wireless communication generally requires the use of multiple antennas at the transmitting end. However, many wireless devices usually only have a sin...

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 Applications(China)
IPC IPC(8): H04W40/22H04B1/707
Inventor 王德强杨云杰贾立平曹锟孙雪峰
Owner SHANDONG UNIV
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