Random number statement-based multiple access method

An access method and random number technology, applied in digital transmission systems, data exchange networks, electrical components, etc., can solve the problems of reducing channel utilization, increasing channel access overhead, increasing channel access delay, etc., to achieve The effect of improving channel utilization, reducing channel access overhead, and reducing channel access delay

Active Publication Date: 2013-04-03
BEIJING HANNUO SEMICON TECH CO LTD
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method has the problem that the maximum length of the back-off period increases linearly with the number of network sites, which increases the channel access overhead, reduces the channel utilization rate, and increases the channel access delay.

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
  • Random number statement-based multiple access method
  • Random number statement-based multiple access method
  • Random number statement-based multiple access method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] The content of the present invention will be further elaborated below in conjunction with the accompanying drawings.

[0015] In the embodiment of the present invention, P is the total number of service priorities in the network, which takes a value of 4; M is the maximum number of sites in the network, and takes a value of 8.

[0016] refer to figure 2 , the implementation process of the present invention is divided into 4 periods, which are channel monitoring period, priority competition period, random number declaration period and data transmission period in sequence. figure 2 The "K-1th data frame" in refers to any data frame, and the "Kth data frame" refers to the next data frame of the "K-1th data frame" on the channel. The workflow of each period is described as follows:

[0017] Channel monitoring period: Monitor the channel to determine whether the current channel status is idle. When multiple sites in a physical network want to access the channel, all site...

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 realizing multiple access with a random number statement, which mainly solves the problems of low channel utilization rate and long channel access delay caused by overmany time slots of an avoiding time period in the conventional priority-based multiple access method. The method is implemented by a process comprising a channel monitoring time period, a priority competition time period, a random number statement time period and a data transmission time period. In the channel monitoring time period, channels are monitored, and a current channel is judged whether to be idle or not. In the priority competition time period, the service priority of each station is stated, and the stations with the highest service priority are screened according to statement results. In the random number statement time period, random numbers are generated by the station with the highest service priority, and are stated, and the station with the greatest stated random number may obtain a data transmission opportunity. The method has the advantages of low channel access overhead, high channel utilization rate and short channel access delay, and can be used for Ethernet over cable (EoC) communication.

Description

technical field [0001] The invention belongs to the technical field of communication, and relates to a multiple access method, in particular to an Ethernet EoC communication system based on a coaxial cable, in which multiple communication stations use carrier sense multiple access (CSMA) to efficiently access channels The method can be used in the technical field of EoC communication. Background technique [0002] In an EoC communication system that shares a medium, when multiple stations access the channel at the same time, the data frames of multiple users may collide on the physical channel, making it impossible for the receiving end to receive it correctly, resulting in communication failure. In an EoC network, in order to communicate effectively, according to different service characteristics, time division multiple access (TDMA) mode and CSMA mode or a combination of the above two modes are usually used to realize channel sharing between multiple sites. For services w...

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 Patents(China)
IPC IPC(8): H04L12/413
Inventor 张冰黄粉张奭王敏超刘长明张平平胡广王焜
Owner BEIJING HANNUO SEMICON TECH CO LTD
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