Dynamic RF Bandwidth Reconfiguration for Interference Mitigation
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Solution Overview
Problem
In the context of 5G-Advanced and 6G wireless communications, the deployment of flexible duplexing and narrowband New Radio (NR) technologies leads to challenging coexistence situations with co-channel and adjacent channel interference, particularly during soft migration from GSM-R to FRMCS, where existing technologies lack the ability to dynamically adapt radio frequency (RF) bandwidth in real-time to mitigate interference.
Innovation Solution
A method and apparatus that allow a device to receive a trigger to change its bandwidth configuration, determine if the target bandwidth involves a change of the reference channel, and reconfigure the RF settings accordingly, including adjusting the channel bandwidth and location, while minimizing switching gaps when necessary, to reduce interference between different wireless communication systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If flexible duplexing and narrowband NR are deployed, then network adaptability and service flexibility are improved, but co-channel and adjacent channel interference increases
Solution Approach 1:
The patent implements dynamic RF bandwidth adjustment where the device can change its operating bandwidth configuration in real-time based on trigger signals from the network. This allows the system to adapt to different interference scenarios by dynamically switching between narrowband and wideband modes, resolving the contradiction between maintaining network adaptability and reducing interference through flexible operational characteristics.
Solution Approach 2:
The patent changes the RF bandwidth parameter from a fixed configuration to a dynamically adjustable parameter. By receiving trigger signals and switching between different bandwidth configurations (e.g., narrowband for interference-prone scenarios, wideband for high-data-rate scenarios), the system modifies its operational parameters to balance adaptability requirements with interference mitigation needs.
2Object-affected harmful factors
If RF bandwidth is adjusted dynamically, then interference mitigation is improved, but device complexity increases
Solution Approach 1:
The patent implements a self-service mechanism where the device autonomously monitors for trigger signals and automatically switches between bandwidth configurations without requiring complex external coordination. The device itself manages the complexity of RF reconfiguration by having built-in capabilities to detect triggers, determine appropriate bandwidth modes, and execute switching, thereby reducing the need for additional complex control infrastructure.
Solution Approach 2:
The patent designs the device with multi-functional capabilities that allow it to operate in both narrowband and wideband modes using the same hardware infrastructure. The RF configuration module can universally handle different bandwidth requirements by reconfiguring existing components rather than requiring separate dedicated hardware for each mode, thus reducing overall device complexity while maintaining interference mitigation capabilities.
3Object-affected harmful factors
If bandwidth configuration is reconfigured frequently, then interference adaptation is improved, but switching gaps increase
Solution Approach 1:
The patent implements preliminary action by pre-configuring multiple bandwidth modes and having the device ready to switch between them upon receiving a trigger signal. The system prepares the RF configuration in advance for potential switching scenarios, allowing faster transition times and reducing the actual switching gap when interference adaptation is needed, thus balancing frequent adaptation with minimal time loss.
Data Source
AI summary
A device for adjusting a configuration of a user equipment includes a memory and processing circuitry configured to cause the device to receive, from a transmitter, a trigger to change a bandwidth configuration that is used as a reference for radio frequency transmission and reception requirements of the device, determine whether a target bandwidth indicated by the trigger involves a change of a reference channel, configure a radio frequency in response to determining that the target bandwidth involves the change of the reference channel, and reconfigure the bandwidth configuration based on the trigger.