UWB and Wi-Fi Coexistence Through Dynamic WLAN Puncturing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The coexistence of UWB and Wi-Fi technologies is challenged by interference due to their proximity in frequency bands, differences in bandwidth, and transmission power levels, leading to deteriorated performance in shared network environments.
Innovation Solution
Implementing techniques such as dynamic radio resource management, frequency-domain puncturing, beamforming, and adjusting UWB packet structures to mitigate interference, including synchronization schedules and zone of non-interference strategies to optimize coexistence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If UWB channel 5 is used for transmission, then range improvement is achieved, but interference with Wi-Fi 6E increases due to frequency overlap
Solution Approach 1:
The patent segments the frequency spectrum by establishing zones of non-interference around UWB channels, dividing the operational spectrum into protected UWB regions and available Wi-Fi regions. This allows UWB to maintain its range advantage on channel 5 while Wi-Fi operates in other channels, resolving the interference conflict through spectral segmentation.
Solution Approach 2:
The patent applies local quality by creating zone-of-non-interference regions with specific characteristics around UWB channels. Within these zones, Wi-Fi transmissions are restricted or modified to protect UWB operations, while outside these zones, Wi-Fi can operate normally. This localized approach preserves UWB range performance while managing interference in specific spatial-frequency regions.
2Adaptability or versatility
If UWB and Wi-Fi operate in the same frequency band, then spectrum utilization is improved, but transmission performance deteriorates due to interference
Solution Approach 1:
The patent implements dynamic radio resource management where the system continuously monitors and adjusts channel assignments based on real-time interference conditions. The access point dynamically selects optimal channels for Wi-Fi clients while protecting UWB channels, allowing the system to adapt to changing spectral conditions and maintain reliable transmissions for both technologies.
Solution Approach 2:
The patent introduces an intermediary mechanism in the form of zone-of-non-interference zones and dynamic channel selection algorithms. These intermediaries coordinate between UWB and Wi-Fi operations, mediating the frequency conflict by identifying and protecting critical UWB frequencies while allowing Wi-Fi to utilize remaining spectrum resources efficiently.
3Length of moving object
If Wi-Fi transmits at high power levels, then transmission distance is improved, but interference with UWB increases due to power difference
Solution Approach 1:
The patent applies preliminary anti-action by having the access point proactively identify and prevent Wi-Fi transmissions that would interfere with UWB operations. Through zone-of-non-interference zone mapping and dynamic channel selection, the system preemptively avoids creating harmful interference, rather than reacting to interference after it occurs.
Solution Approach 2:
The patent changes operational parameters by dynamically adjusting Wi-Fi channel selections and transmission parameters based on UWB channel usage. When UWB is active on channel 5, the system modifies Wi-Fi transmission parameters to avoid overlapping frequencies, thereby reducing interference while maintaining Wi-Fi transmission distance through alternative channel assignments.
Data Source
AI summary
Techniques for optimizing the coexistence of UWB and Wi-Fi transmissions are provided. One or more frequency bands causing spectral leakage that impacts an ultra-wideband (UWB) network device are identified. A synchronization schedule is received from the UWB network device. The synchronization schedule is analyzed to determine one or more timings for one or more UWB transmissions. One or more Wireless Local Area Network (WLAN) transmissions are punctured to avoid interference with the one or more UWB transmissions.