LTE WLAN Coexistence via Adaptive Interference Mitigation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The coexistence of LTE and ISM bands is challenged by interference from LTE communications, which can degrade ISM signal quality and impede data rates, especially when both share the same device or hardware resources, and existing solutions are not universally applicable across diverse wireless devices.
Innovation Solution
Implement adaptive systems and methods that detect LTE-related interference and adjust wireless power levels, EDCA backoff times, and channel allocation to facilitate coexistence, including channel reassignment and dynamic adjustment of energy detection thresholds, to minimize interference and ensure seamless communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If LTE and ISM transceivers share the same device and hardware resources, then device integration and resource efficiency are improved, but interference between LTE and ISM signals worsens
Solution Approach 1:
The system dynamically adjusts transmission parameters including power levels, backoff times, and channel allocation based on real-time detection of LTE signal presence and interference conditions, allowing the ISM transceiver to adapt its behavior to coexist with LTE communications on the same device
Solution Approach 2:
The patent modifies operational parameters such as energy detection thresholds, EDCA backoff times, and channel selection to optimize coexistence between LTE and ISM bands, changing these parameters based on detected interference conditions to maintain communication quality
2Object-affected harmful factors
If time multiplexing is used to separate LTE and ISM signals, then interference is reduced, but data rate on each channel deteriorates
Solution Approach 1:
The system employs periodic channel assessments and dynamic parameter adjustments rather than strict time multiplexing, allowing both LTE and ISM communications to operate concurrently with optimized parameters that reduce interference while maintaining high data rates on both channels
3Reliability
If adaptive interference mitigation is implemented, then coexistence quality is improved, but system complexity increases
Solution Approach 1:
The system implements feedback mechanisms where the ISM transceiver detects LTE signal presence and interference conditions, then uses this feedback to dynamically adjust its transmission parameters including power levels, backoff times, and channel selection, achieving effective coexistence through closed-loop control
Solution Approach 2:
The ISM transceiver autonomously detects interference conditions and adjusts its own operational parameters without requiring external coordination with LTE systems, enabling self-service interference mitigation that reduces overall system complexity while maintaining reliable coexistence
Data Source
AI summary
Various of the disclosed embodiments provide systems and methods for enabling LTE® and wireless, e.g., ISM band, applications to coexist on a same device or on separate devices in proximity to one another. Some embodiments implement a remediation and/or channel transition process for the wireless devices following detection of LTE®-related interference. During remediation, the device may, e.g., adjust the wireless power levels, EDCA backoff times, signal thresholds, etc. In some embodiments, if the remediation actions prove ineffective, the wireless peers may be relocated to a channel further from the interfering LTE® band. The determination to remediate or reallocate may be based on various contextual factors, e.g., the character of the peer devices and the applications being run.