Wireless Coexistence Arbitration to Reduce Same-Band Interference
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Solution Overview
Problem
Conventional systems lack robust mechanisms to mitigate interference among wireless communication technologies operating in the same frequency band, such as Wi-Fi, Bluetooth, and Thread, leading to performance degradation.
Innovation Solution
A wireless communication protection system and method that arbitrates coexistence among networks based on access priorities, temporarily disabling lower-priority communications to allow higher-priority transmissions, using protection signals to manage interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple wireless communication technologies operate in the same frequency band simultaneously, then communication coverage and connectivity are improved, but interference and performance degradation occur
Solution Approach 1:
The system performs preliminary arbitration before allowing wireless transmissions. The first device receives transmission requests from multiple devices (second device from first network, fourth device from third network) and determines access priorities in advance. Protection signals are transmitted beforehand to prevent interference before it occurs, rather than reacting after interference has degraded performance.
Solution Approach 2:
The first device acts as an intermediary arbitration device that mediates between multiple wireless networks. It receives requests from devices in different networks (first network and third network), arbitrates their coexistence based on access priorities, and transmits protection signals to the second device to disable its communications temporarily, thereby preventing interference between networks.
2Reliability
If access arbitration is implemented to reduce interference, then communication reliability is improved, but system complexity increases
Solution Approach 1:
The arbitration system is segmented into distinct functional components: request reception module, priority determination module, protection signal transmission module, and grant signal transmission module. Each component handles a specific aspect of the arbitration process, making the overall system more manageable and implementable despite the increased complexity required for reliable multi-network coexistence.
Data Source
AI summary
A wireless communication protection method includes receiving a transmission request by a first device from a third device; arbitrating coexistence from at least the first network and the third network by the first device according to at least access priorities of the first network and the third network, upon identifying that the transmission request indicates a sending request; transmitting a protection signal by the first device for disabling communications from the second device to the first device when the third device is granted access to communicate with the fourth device through the third network; and transmitting a grant signal indicating a grant state from the first device to the third device for enabling the third device to communicate with the fourth device through the third network after the communications from the second device to the first device are disabled.