Anchor Channel Control via Interference Feedback
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Solution Overview
Problem
Changing the anchor channel configuration in wireless communication networks during active communications can lead to undetectable interference, potentially disrupting wireless communications, especially in shared spectrum environments where unpredicted changes occur due to overlapping networks or interference from other sources.
Innovation Solution
A method where the base station provides a countdown for impending changes in anchor channel configuration, allowing electronic devices to scan for interference and provide feedback, which can abort the change if interference is detected, ensuring coordinated changes that account for the spectrum environment and prevent disruptions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the base station changes the anchor channel configuration during active wireless communications, then the network can adapt to unpredicted changes in the shared spectrum environment, but interference may be present at the location of electronic devices that is undetectable by the base station, potentially disrupting wireless communications
Solution Approach 1:
The base station performs preliminary actions by notifying electronic devices of the impending anchor channel configuration change in advance, allowing devices to scan the new frequency for interference and provide feedback before the change is implemented. This preliminary scanning and feedback mechanism enables the network to verify spectrum conditions at the device level before committing to the configuration change, thus maintaining reliability while achieving adaptability.
Solution Approach 2:
The system implements a feedback mechanism where electronic devices scan the proposed new anchor channel frequency for interference and communicate their findings back to the base station. The base station uses this feedback to decide whether to proceed with or abort the anchor channel configuration change. This feedback loop ensures that configuration changes are only implemented when verified to be safe, resolving the contradiction between adaptability and reliability.
2Speed
If the base station implements anchor channel configuration changes immediately, then the network can respond quickly to spectrum environment changes, but the change may be aborted later if interference is detected at device locations
Solution Approach 1:
The base station performs preliminary interference scanning at electronic device locations before implementing the anchor channel configuration change. By conducting this verification in advance and only implementing changes that are confirmed to be interference-free, the system avoids the waste of time associated with implementing changes that would later need to be aborted, thus optimizing the balance between response speed and time efficiency.
3Reliability
If the base station uses a countdown approach with advance notification to electronic devices, then interference can be detected and changes can be aborted if necessary, but the implementation of configuration changes is delayed
Solution Approach 1:
The system uses a countdown approach with advance notification to electronic devices, allowing them to scan and provide feedback on the proposed anchor channel configuration change. While this introduces a delay, it ensures that changes are only implemented when verified to be safe, significantly improving the reliability of configuration changes by preventing disruptions from undetected interference.
Data Source
AI summary
Controlling synchronization signal operation in a base station operating in shared spectrum includes detecting a condition related to a current anchor channel configuration used for transmission of synchronization signal transmissions and selecting, based on the detecting, a new anchor channel configuration and communicating the new anchor channel configuration to electronic devices serviced by the base station. The base station commences sending a predetermined number of synchronization signal transmissions using the current anchor channel configuration; and one of: i) sends synchronization signal transmissions using the new anchor channel configuration if the predetermined number of synchronization signal transmissions are sent on the current anchor channel configuration; or ii) aborts a change to the new anchor channel configuration if feedback is received from one of the electronic devices that the electronic device detected interference on the new anchor channel configuration before the predetermined number of synchronization signal transmissions are sent.