A link scheduling method and system suitable for long-delay SIC networks

Abstract

The present invention relates to a link scheduling method and system suitable for long-delay SIC networks, including: according to the number of sending nodes, the environmental noise power and the signal-to-interference ratio threshold of the SIC algorithm, the transmission signal of each sending node can be generated by the SIC algorithm For the decoded minimum power value, set the minimum power value as the K-SIC power threshold vector to divide the transmission power level of each sending node; according to the amount of data sent by each sending node, determine the load status of the long-delay network, and according to the load status and The transmission power level executes the minimum frame length scheduling algorithm to generate the minimum scheduling frame length of the long-delay network; according to the number of sending nodes, the minimum scheduling frame length and the receiving mechanism of the receiving node, the minimum power scheduling algorithm is executed to obtain the minimum power consumption of the entire network Link scheduling strategy. In this way, the transmission efficiency between nodes in the long-delay SIC network can be improved, and the overall 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...

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

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