Wireless Communication Device Interference-Based Time Division Multiplexing
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing interfering waves in home automation networks, leading to reduced responsiveness and increased power consumption, particularly when multiple handsets communicate simultaneously, as they struggle to select optimal slots and frequencies amidst varying interfering wave levels.
Innovation Solution
A wireless communication device with a control station that measures and stores interfering wave reception levels, selects slots and frequencies based on predetermined thresholds, and notifies slave stations to avoid collisions by distributing channel usage equally, thereby improving channel selection and reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple slave stations communicate simultaneously using time division multiplex scheme, then communication capacity is improved, but channel collisions and interference increase
Solution Approach 1:
The control station performs preliminary measurement of interfering wave levels for all slots and frequencies before slave stations select channels. This advance measurement and notification allows slave stations to choose optimal channels without collision, resolving the contradiction between high communication capacity and low collision rate
Solution Approach 2:
The control station continuously monitors interfering wave levels and provides feedback to slave stations about optimal slots and frequencies. This feedback mechanism enables dynamic channel selection that maintains high productivity while minimizing collisions through real-time information about channel quality
2Reliability
If slave stations continuously monitor for optimal channels, then communication reliability is improved, but power consumption increases
Solution Approach 1:
The control station performs the energy-intensive task of monitoring and measuring interfering wave levels on behalf of all slave stations. Slave stations receive ready-made channel recommendations without needing to expend energy on continuous monitoring, thus achieving high reliability with low power consumption
Solution Approach 2:
The control station acts as an intermediary that centralizes the channel monitoring function. Instead of each slave station independently monitoring channels (high energy consumption), the control station mediates by performing single centralized measurements and distributing results to multiple slave stations (low energy consumption per station)
3Device complexity
If the system uses fixed slot allocation for time division multiplex, then device complexity is reduced, but adaptability to varying interference levels deteriorates
Solution Approach 1:
The system transitions from fixed slot allocation to dynamic channel selection based on measured interfering wave levels. The control station notifies slave stations of optimal channels that adapt to current interference conditions, achieving high adaptability without significantly increasing device complexity through automated measurement and notification processes
Data Source
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AI summary
A wireless communication device for packet communication is provided. Based on an interfering wave level that is stored in carrier sense table, the number of empty slots for every threshold of interfering wave is obtained, and, in a case where the number of empty slots for the threshold exceeds a predetermined value, a slave station is notified the number of empty slots.