UE Bandwidth Update for Overlapping RF Channel Interference
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Solution Overview
Problem
Network planning in wireless communications systems often fails to optimize cell coverage and minimize inter-cell interference, leading to interference conditions due to overlapping RF channels, especially in new band deployments and shared spectrum conditions, which degrade device performance.
Innovation Solution
UEs detect potential interference conditions by examining over-the-air overheads without scanning for actual interference, and adjust their operating bandwidths, signaling updated maximum supported bandwidths to the wireless network to mitigate interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If network planning uses traditional cell deployment methods, then cell coverage can be established, but inter-cell interference increases due to overlapping RF channels
Solution Approach 1:
The UE performs preliminary detection of potential interference conditions by examining over-the-air overheads before actual communication begins. The UE determines updated maximum supported bandwidths based on detected overlapping spectra and signals this information to the network, preventing interference before it occurs rather than reacting after interference is detected
Solution Approach 2:
The UE provides feedback to the wireless network about detected interference conditions and updated bandwidth capabilities. This feedback mechanism allows the network to adjust resource allocation and avoid assigning channels that would cause interference, creating a closed-loop system that adapts to actual spectral conditions
2Measurement precision
If UEs scan for actual interference conditions, then interference detection accuracy improves, but detection time and energy consumption increase
Solution Approach 1:
Instead of scanning for actual interference after it occurs, the system performs preliminary examination of over-the-air overheads to detect potential interference conditions. This preliminary action identifies overlapping spectra before full interference detection is needed, reducing both time and energy while maintaining accuracy
Solution Approach 2:
The system uses over-the-air overheads as an intermediary indicator to infer interference conditions. Rather than directly measuring interference (which requires time-consuming scans), the system examines overhead signals that contain information about channel occupancy and spectral usage, providing a faster indirect measurement
3Productivity
If UEs operate with maximum supported bandwidth, then data rate improves, but interference vulnerability increases
Solution Approach 1:
The system dynamically adjusts the operating bandwidth based on detected interference conditions and network feedback. Rather than operating at fixed maximum bandwidth, the UE and network collaborate to determine optimal bandwidths that balance data rate requirements with interference avoidance, allowing adaptive adjustment of the bandwidth parameter
Data Source
AI summary
Various aspects of the present disclosure relate to detecting at least two selection-suitable cells of similar pathloss on a frequency range, each cell associated with a RF channel, and determining a potential RF interference condition between the at least two selection-suitable cells due to overlapping spectra of the associated RF channels. Aspects of the present disclosure relate to determining, for the frequency range, updated maximum supported bandwidths of the UE and transmitting an indication of at least one updated maximum supported bandwidth to a wireless network.