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

Link scheduling method and system suitable for long-delay SIC network

A link scheduling and scheduling algorithm technology, applied in transmission systems, services based on specific environments, machine-to-machine/machine-type communication services, etc., can solve the problem of unstable underwater acoustic signal propagation speed, underwater acoustic communication delay jitter, Limited communication capacity, etc., to achieve the effect of improving network throughput, reducing data transmission delay, and optimizing network throughput

Active Publication Date: 2018-02-09
INST OF COMPUTING TECH CHINESE ACAD OF SCI
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, affected by environmental factors such as salinity, temperature, ocean current, and depth, the propagation speed of underwater acoustic signals in water is very unstable, which causes delay jitter in underwater acoustic communication
High latency and delay jitter problems bring great challenges to the time synchronization of underwater sensor network nodes
[0005] 2. Limited battery energy and high power consumption
[0006] 3. Limited communication capabilities
SIC technology cannot resolve all conflicts

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
  • Link scheduling method and system suitable for long-delay SIC network
  • Link scheduling method and system suitable for long-delay SIC network
  • Link scheduling method and system suitable for long-delay SIC network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0049] In order to make the above-mentioned features and effects of the present invention more clear and understandable, the following specific examples are given together with the accompanying drawings for detailed description as follows.

[0050] The signal-to-noise ratio (Signal Noise Ratio, SNR) formula 1 of the underwater acoustic channel is shown as:

[0051]

[0052] where P t is the transmit power, P r is the received power, P N is the channel ambient noise power, A(d,f) is the underwater acoustic channel fading function, and its formula is as follows:

[0053] A(d,f)=d k a(f) d (2)

[0054] where d is the distance between the receiving node and the sending node, k is the channel loss index, which usually takes a value between 1 and 2, f is the underwater acoustic carrier frequency, and a(f) is the underwater acoustic channel absorption coefficient.

[0055]

[0056] Ambient noise power P under water N Mainly caused by sea waves, its formula is as follows...

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 link scheduling method and system suitable for a long-delay SIC network. The method comprises the following steps: generating a minimum power value of transmission signals of each sending node that can be decoded by an SIC algorithm according to the number of the sending nodes, ambient noise power and a signal-to-interference ratio threshold of the SIC algorithm, and collecting the minimum power values as a K-SIC power threshold vector to divide sending power levels for each sending node; determining a load state of a long-delay network according to the amount of data sent by each sending node, executing a minimum frame length scheduling algorithm according to the load state and the sending power levels, and generating a minimum scheduling frame length of the long-delay network; and executing a minimum power scheduling algorithm according to the number of the sending nodes, the minimum scheduling frame length and a reception mechanism of receiving nodes to obtain a link scheduling strategy that minimizes the power consumption of the whole network. Thereby, the transmission efficiency between the nodes in the long-delay SIC network can be improved, and theoverall energy consumption of the long-delay SIC network can be reduced.

Description

technical field [0001] The invention relates to the field of long-delay network media medium access control in information technology, in particular to a link scheduling method and system suitable for long-delay SIC networks. Background technique [0002] Since the acoustic channel is used as the data transmission method, the transmission speed of sound in water is only 1500m / s, so the Underwater Sensor Networks (UWSN) is a typical long-delay network in real life. The main task of UWSN is to perceive the underwater objective world, transmit the data sensed by underwater sensors in a self-organizing manner, and then organize, process, fuse, analyze and store these data. Therefore, unlike common network technologies (such as mobile communication networks, terrestrial wireless sensor networks, etc.), UWSN has the characteristics of large network scale, self-organization and high dynamics. [0003] The Media Access Control (MAC) layer is located between the physical layer and t...

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): H04W52/24H04W72/12H04B13/02H04W4/38H04W4/70H04W56/00
CPCH04W52/241H04W52/243H04B13/02H04W56/001H04W72/12H04W72/542H04W72/52
Inventor 徐亦达李超徐勇军刁博宇王琪安竹林
Owner INST OF COMPUTING TECH CHINESE ACAD OF SCI
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