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

Method for designing WLAN (wireless local area network) MAC (medium access control) layer protocol based on cooperative communication

A technology of medium access control and wireless local area network, which is applied in wireless communication, network topology, error prevention/detection using return channel, etc. It can solve the problems of low compatibility and high complexity of access mechanism design

Inactive Publication Date: 2015-07-15
NORTHWESTERN POLYTECHNICAL UNIV
View PDF3 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the problems of high complexity of access mechanism design, introduction of too many control frames, and low compatibility with the existing 802.11MAC protocol in the existing cooperative communication protocol, the present invention mainly completes the cooperative communication MAC based on network coding. The design work of the protocol, the mechanisms involved in the entire protocol include: network coding mechanism, frame format design and channel access mechanism based on competition-like distributed coordination function

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 designing WLAN (wireless local area network) MAC (medium access control) layer protocol based on cooperative communication
  • Method for designing WLAN (wireless local area network) MAC (medium access control) layer protocol based on cooperative communication
  • Method for designing WLAN (wireless local area network) MAC (medium access control) layer protocol based on cooperative communication

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0051] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0052] 1. Network coding mechanism

[0053] The cooperative communication MAC (NCC-MAC) protocol uses random linear network coding to improve its network performance. Unlike the traditional data frame format, the payload of a frame is divided into N sub-parts, and N is the network coding. The number of divided data frames, assuming that the total length of the payload is L bits, so the length of each sub-part l=L / N bits, the original data can be expressed as D=[d 1 , d 2 ,...,d N ] T , where d n (n=1,2,...,N) is the nth subpart, and T represents matrix transposition;

[0054] The sending node, including the source node or the helper node, first randomly generates an N×N order coefficient matrix C, C=[c 1 ,c 2 ,...,c N ] T , N is the number of sub-parts into which the data load is divided, where c n =[c n1 ,c n2 ,...,c nN ] is a 1×N row vect...

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 provides a method for designing a WLAN (wireless local area network) MAC (medium access control) layer protocol based on cooperative communication. According to the method, the design work of a network coding based cooperative communication MAC protocol is mainly completed. Mechanisms involved in the whole protocol comprise a network coding mechanism, frame format design and a competition-based DCF (distributed coordination function) channel access mechanism. The invention provides a novel network coding based cooperative communication MAC protocol, the complexity of the access mechanism is reduced, introduction of a large quantity of control frames is avoided, the protocol is well compatible with an existing protocol, meanwhile, the network performance is effectively improved, and the error code rate is reduced.

Description

technical field [0001] The invention relates to the field of wireless local area network, especially the MAC protocol of cooperative communication. Background technique [0002] A Wireless Local Area Network (WLAN) is a computer communication network that uses wireless transmission media. In June 1997, IEEE released the 802.11 standard as an international network interconnection protocol. The development of standards and the opening of the public frequency band (ISM frequency band) used by industrial, scientific and medical institutions have further promoted the rapid development of WLAN, which has been widely used. However, the fading and multipath effects caused by wireless local area network using radio waves to transmit information are one of the main reasons hindering the increase of channel capacity and the improvement of service quality. [0003] The collaborative communication algorithm proposed by A.Sendonaris et al. in the document "User Cooperation Diversity, Pa...

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): H04W74/08H04L1/16
CPCH04L1/1621H04L1/1664H04W74/0816H04W84/12
Inventor 张若南袁建平侯建文罗建军秦恒
Owner NORTHWESTERN POLYTECHNICAL 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