Wi-Fi Rate Adaptation for LAA Interference Mitigation
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Solution Overview
Problem
The coexistence of LAA/LTE-U signals with Wi-Fi communications in the same frequency band leads to degradation of data throughput and decreased performance of streaming applications due to interference.
Innovation Solution
Wireless communication devices can detect LAA/LTE-U signals while performing Wi-Fi communications and adjust characteristics or parameters, such as Wi-Fi Rate Adaptation, Channel/Band Selection, and Voice/Video traffic tagging, to mitigate the impact of these signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If LAA/LTE-U signals are transmitted in the unlicensed 5 GHz band to boost cellular coverage, then cellular network coverage is improved, but Wi-Fi data throughput and streaming application performance are degraded due to interference
Solution Approach 1:
The patent implements preliminary detection of LAA/LTE-U signals before Wi-Fi transmissions occur. The system continuously monitors the unlicensed band for cellular signals and adjusts Wi-Fi operations in advance to avoid interference, thereby maintaining Wi-Fi throughput while allowing cellular coverage expansion
Solution Approach 2:
The patent dynamically adjusts Wi-Fi transmission parameters such as power level, channel selection, and modulation scheme based on real-time detection of LAA/LTE-U signal presence and strength. This dynamic adaptation allows the system to optimize Wi-Fi performance under varying cellular interference conditions
2Area of stationary object
If LAA/LTE-U signals are transmitted in the unlicensed 5 GHz band to boost cellular coverage, then cellular network coverage is improved, but streaming application performance is degraded due to interference
Solution Approach 1:
The system performs preliminary detection of LAA/LTE-U signals and predicts potential interference patterns before streaming applications are affected. This allows proactive adjustment of Wi-Fi transmissions or channel selection to maintain streaming quality
Solution Approach 2:
The patent implements feedback mechanisms that continuously monitor streaming application performance metrics and adjust Wi-Fi transmission parameters in response to detected LAA/LTE-U interference, thereby maintaining reliable streaming performance despite cellular signal presence
Data Source
AI summary
A wireless communication device may conduct first wireless communications over a first frequency band according to a first radio access technology (RAT), and may detect second wireless communications conducted over the first frequency band according to a second RAT while the wireless communication device is conducting the first wireless communications. The wireless communication device may then adjust characteristics and/or parameters associated with the first wireless communications based on the detected second wireless communications. In a specific example, a wireless communication device conducting Wi-Fi communications in the 5 GHz band may detect cellular communications (e.g. LAA/LTE-U communications) also conducted in the 5 GHz band while the wireless communication device is conducting the Wi Fi communications. The wireless communication device may then adjust characteristics and/or parameters associated with its Wi-Fi communications based on the detected signals/frequencies of the cellular (LAA/LTE-U) communications.