Bandwidth Part Switching Retuning Signal Drop
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Solution Overview
Problem
In 5G communication systems, bandwidth part changes can result in signal drops or skipped transmissions during the retuning time, affecting the efficient transmission and reception of uplink/downlink data and control channels.
Innovation Solution
A method and apparatus for a terminal in a wireless communication system that identifies predetermined events to switch between bandwidth parts, performing specific operations during the retuning time, including dropping or skipping signals to ensure seamless channel changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If bandwidth part switching is performed to adapt to different transmission requirements, then adaptability is improved, but signal transmission reliability deteriorates due to retuning time causing signal drops or skipped transmissions
Solution Approach 1:
The patent applies preliminary action by notifying the terminal of bandwidth part switching information in advance before the actual switching occurs. This allows the terminal to prepare for the bandwidth part change proactively, reducing the impact of retuning time on signal transmission. The notification mechanism enables the system to initiate the switching process at an optimal moment, ensuring that critical signals are not dropped during the transition.
2Productivity
If bandwidth part switching is performed frequently to optimize transmission efficiency, then productivity is improved, but loss of time increases due to repeated retuning operations
Solution Approach 1:
The patent implements feedback by having the base station notify the terminal of upcoming bandwidth part switching through downlink control information. This feedback mechanism allows the system to coordinate switching operations centrally, avoiding unnecessary frequent switches and optimizing the timing of bandwidth part changes. The terminal can adjust its reception strategy based on the notification, minimizing the time loss associated with retuning while maintaining high transmission efficiency.
Data Source
AI summary
The present disclosure relates to: a communication technique for converging an IoT technology with a 5G communication system for supporting a higher data transfer rate beyond a 4G system; and a system therefor. The present disclosure can be applied to intelligent services (for example, a smart home, a smart building, a smart city, a smart car or connected car, health care, digital education, retail business, security and safety-related service, etc.) on the basis of a 5G communication technology and an IoT-related technology. The present invention proposes various communication methods and apparatuses according to changes in bandwidth part in a 5G communication system.