Multi-Antenna MAC Circuit for Lower-Power Channel Scanning
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Solution Overview
Problem
Wireless communication systems face increased power consumption and signal quality degradation due to inefficient channel scanning mechanisms, which need to be improved for enhanced performance.
Innovation Solution
A wireless communication circuit with multiple pairs of antennas, MAC circuits, and a switch circuit, controlled by a control circuit to perform channel scanning using multiple inactive links, prioritizing channel lists and simultaneous scanning to reduce power consumption and enhance user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a station performs channel scanning to search for available access points, then the station can discover and connect to new networks, but the power consumption of the station increases
Solution Approach 1:
The patent segments the channel scanning function by dividing it into multiple independent MAC circuits. Each MAC circuit can scan different channel lists simultaneously or sequentially, allowing the scanning function to be distributed across multiple hardware units. This segmentation enables more efficient resource utilization and reduces the overall power consumption compared to a single MAC circuit performing all scanning tasks.
Solution Approach 2:
The patent implements dynamic scanning strategies where the control circuit determines whether to perform simultaneous or sequential scanning based on system state and requirements. The switch circuit dynamically couples antenna pairs to different MAC circuits, and the scanning process adapts by prioritizing channel lists and adjusting scanning behavior based on active link status, thereby optimizing power consumption while maintaining network discovery capability.
2Adaptability or versatility
If a station performs channel scanning to search for available access points, then the station can discover and connect to new networks, but the signal quality of the active link deteriorates
Solution Approach 1:
The patent separates the scanning function from the active link maintenance function by assigning them to different MAC circuits. One MAC circuit maintains the active link while other MAC circuits perform channel scanning on different antenna pairs. This functional segmentation ensures that scanning operations do not interfere with or degrade the signal quality of the active communication link.
Solution Approach 2:
The patent implements dynamic scanning strategies where the control circuit determines whether to perform simultaneous or sequential scanning based on system state and requirements. The switch circuit dynamically couples antenna pairs to different MAC circuits, ensuring that antennas used for active links are not simultaneously used for scanning, thereby preventing signal quality degradation while maintaining network discovery capability.
3Productivity
If multiple MAC circuits are used for simultaneous scanning of different channel lists, then the scanning efficiency is improved, but the device complexity increases
Solution Approach 1:
The patent designs multiple MAC circuits with identical or similar functional capabilities, where each MAC circuit can independently perform channel scanning and active link maintenance tasks. This universality allows the system to achieve improved scanning efficiency through parallel processing while managing complexity by using replicated, standardized circuit blocks rather than highly specialized complex circuits.
Solution Approach 2:
The patent resolves the complexity issue by adding spatial dimensionality through the use of multiple antenna pairs. Instead of increasing the complexity of a single MAC circuit, the system distributes scanning tasks across multiple MAC circuits, each paired with dedicated antenna elements. This dimensional approach allows parallel scanning operations while keeping individual circuit units relatively simple and manageable.
Data Source
AI summary
A wireless communication circuit includes multiple pairs of antennas, a first media access control (MAC) circuit, a second MAC circuit, a switch circuit, and a control circuit. The switch is used to couple the pairs of antennas to the first MAC circuit or the second MAC circuit. The control circuit is configured to perform the following steps: controlling the first MAC circuit to scan a first channel list; controlling the second MAC circuit to scan a second channel list; and controlling the first MAC circuit to scan a third channel list