Bandwidth Part Switching With Cell-Specific Slot Offsets
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Solution Overview
Problem
In 5G wireless communication systems, bandwidth part switching across multiple cells can be unreliable due to varying switch delays, leading to ineffective data transmission and synchronization between serving nodes and user equipment, affecting communication quality.
Innovation Solution
A method and apparatus for determining and sending switch slot offsets for bandwidth part switching in serving nodes, ensuring each switch slot offset's delay meets or exceeds the required delay for its cell, thereby improving switching reliability and communication quality by synchronizing BWP switching across cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If bandwidth part switching is performed across multiple cells with varying switch delays, then the system can support larger bandwidth and more flexible resource allocation, but the switching reliability deteriorates due to different switch delays on different cells affecting synchronization
Solution Approach 1:
The patent applies local quality by configuring cell-specific switch slot offsets for bandwidth part switching. Each cell can have its own tailored switch slot offset value that accounts for its specific characteristics and delay requirements, rather than using a uniform offset across all cells. This allows the system to maintain flexibility in bandwidth part switching while ensuring each cell's switching process meets its specific reliability requirements.
Solution Approach 2:
The patent implements preliminary action by determining and configuring appropriate switch slot offsets before bandwidth part switching is executed. The serving node calculates the required switch slot offset for each cell based on the minimum switch delay requirement, and this offset is pre-configured and stored for use during switching operations. This advance preparation ensures that when switching is needed, the timing is already optimized for reliable execution.
2Productivity
If switch slot offset is reduced to improve switching speed, then productivity increases, but the switch delay may become insufficient for completing BWP switching on all cells, affecting communication quality
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the switch slot offset parameter based on specific cell conditions and requirements. The serving node determines the appropriate offset value for each cell by considering factors such as the minimum switch delay requirement, cell index, and other relevant parameters. This allows the system to optimize switching speed while ensuring the offset is sufficient for reliable BWP switching completion on each cell.
3Reliability
If cell-specific switch slot offsets are configured to improve switching reliability, then the complexity of determining and managing offsets for multiple cells increases
Solution Approach 1:
The patent applies universality by implementing a standardized procedure for determining switch slot offsets that can be applied across multiple cells. The serving node uses a universal algorithm that takes cell-specific inputs (such as cell index and minimum delay requirements) and produces appropriate offsets for each cell. This standardized approach reduces management complexity compared to handling each cell individually, while still maintaining the ability to configure cell-specific offsets for reliability.
Data Source
AI summary
The present application provides a bandwidth part switching method and apparatus, a serving node, a user terminal, and a medium. The bandwidth part switching method includes: determining switch slot offsets of bandwidth part switching process for respective cells in a serving node, a switch delay of each switch slot offset in a corresponding cell being greater than or equal to the required switch delay for the cell; and sending switching indication information to a user terminal, wherein the switching indication information includes the respective switch slot offsets.