Unlicensed Spectrum Communication Method for Energy Reduction
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Solution Overview
Problem
In communication systems using unlicensed spectra, continuous monitoring of channel occupancy leads to increased energy consumption, particularly due to the need to detect idle states before data transmission, which can result in signal interference from hidden stations.
Innovation Solution
Implementing a method where devices detect a first indication signal from other devices occupying the unlicensed spectrum, allowing them to stop monitoring and execute target detection behaviors based on the information in the signal, reducing unnecessary energy expenditure by avoiding continuous channel checks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If continuous monitoring of unlicensed spectrum occupancy state is performed, then data transmission reliability is improved, but energy consumption increases
Solution Approach 1:
The patent applies preliminary action by having devices send indication signals in advance to notify their occupancy intent before actual data transmission begins. This allows other devices to stop monitoring early and prepare for potential interference, resolving the contradiction by enabling reliable transmission without continuous monitoring.
Solution Approach 2:
The patent implements feedback through indication signals that provide information about spectrum occupancy status to other devices. This feedback mechanism allows devices to adjust their behavior based on real-time conditions, maintaining transmission reliability while reducing unnecessary monitoring energy consumption.
2Reliability
If continuous monitoring of unlicensed spectrum occupancy state is performed, then channel access safety is improved, but signal interference from hidden stations increases
Solution Approach 1:
The patent applies preliminary action by having devices send indication signals before data transmission to announce their occupancy intent. This early notification allows other devices to anticipate potential interference and adjust their transmission timing, thereby preventing hidden station interference while maintaining channel access safety.
Solution Approach 2:
The patent uses indication signals as intermediaries that carry information about occupancy status between devices. These signals act as mediators that enable devices to coordinate their transmissions without continuous monitoring, reducing hidden station interference while preserving channel safety.
Data Source
AI summary
A communication method in an unlicensed spectrum includes: monitoring an occupancy state of an unlicensed spectrum; when a first indication signal sent by a second device occupying the unlicensed spectrum is detected, stopping monitoring the occupancy state of the unlicensed spectrum; and obtaining information included in the first indication signal, and determining a target detection behavior based on the information included in the first indication signal.