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

ayered network handover decision-making method based on fuzzy logic and TOPSIS algorithms

A layered network and fuzzy logic technology, applied in electrical components, wireless communication, etc., can solve problems such as high complexity of decision algorithms, combination of load balancing, and inapplicability to real scenarios

Active Publication Date: 2016-09-28
CHONGQING UNIV OF POSTS & TELECOMM
View PDF3 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the existing handover algorithm, although the network load problem is considered, the load balance is not combined into the handover decision process, and the decision algorithm based on multi-attribute is too complex to be suitable for the real scene, and the proposed The handover algorithm based on mobility only simply judges the speed, and does not further study the speed direction. Therefore, it can be further optimized to reduce the number of handovers. To solve the above problems of the existing algorithm, a new handover is needed. Program

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
  • ayered network handover decision-making method based on fuzzy logic and TOPSIS algorithms
  • ayered network handover decision-making method based on fuzzy logic and TOPSIS algorithms
  • ayered network handover decision-making method based on fuzzy logic and TOPSIS algorithms

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] Below in conjunction with accompanying drawing, the present invention will be further described:

[0023] A hierarchical wireless network handover decision-making method based on fuzzy logic and TOPSIS algorithm, the method is divided into two stages, first determine the handover candidate users, and then select the handover target network, specifically including the following steps:

[0024] In the stage of screening switching candidate users, users are divided into request switching user sets and stable connection user sets. Now the main research is how to determine the request switching user set. figure 2 As shown, factors such as RSS, user type, and user speed need to be considered comprehensively.

[0025] 1. The first is the judgment of RSS. There are two possibilities for users in the switching state:

[0026] (1) The user is currently served by the Macrocell, and the RSS received by the UE from the Femtocell exceeds a specific threshold R th .

[0027] (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 makes a request of protecting a handover decision-making method based on fuzzy logic and TOPSIS algorithms. The method comprises two steps of handover candidate user screening and target network selection. At the handover user screening stage, a fuzzy logic algorithm is used for processing user mobile information to obtain a handover suitability degree; and a handover candidate user is selected by combining RSS, a user type, and the user handover suitability degree, and a handover candidate user set is constructed. At the target network selection stage, multi-cell selection is carried out by using an optimization objective function, wherein the objective function considers a cell load, a handover cost, and a network performance comprehensively and the network performance is obtained by processing the RSS, a time delay, mobility support, and energy consumption comprehensively by using a TOPSIS algorithm, and the function aims at realizing cell load equilibrium, network cost minimization, and network performance optimization; and then an optimal cell is selected based on the optimization function and is used as a handover target network. Therefore, the user requirement can be guaranteed and the network equilibrium can be realized.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a layered wireless network switching method. Background technique [0002] Femtocell is a wireless communication system with short coverage distance, low operating cost and low transmission power. It uses ADSL and optical fiber to directly connect to the operator's computer room through the network, which can make up for the lack of coverage in the community and increase the indoor transmission capacity. It is a good solution to indoor communication problems. Femtocells are deployed within the coverage of existing macrocells (Macrocells), forming a layered network architecture, such as figure 1 shown. [0003] In a layered network composed of Femtocell-Macrocell, users need to switch between multiple cells in order to obtain better communication services, and at the same time ensure the seamlessness of switching. Therefore, the research on switching te...

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): H04W36/00H04W36/14H04W36/22
CPCH04W36/0011H04W36/0016H04W36/0072H04W36/14H04W36/22
Inventor 李兆玉万晋京唐宏刘远航宋艳华彭帅
Owner CHONGQING UNIV OF POSTS & TELECOMM
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