FR2 PUCCH SCell Activation with Time-Domain Search Scheduling
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Solution Overview
Problem
Existing wireless communication standards fail to specify how to search an FR2 PUCCH SCell when multiple SCells are activated simultaneously, as they assume FR2 SCells always skip cell search, neglecting the need for FR2 PUCCH SCells to be searched.
Innovation Solution
A method and apparatus that determine a time domain resource for searching an FR2 PUCCH SCell by prioritizing its activation along with N1 FR1 SCells, using first and second durations to ensure comprehensive cell search, and specify activation sequences based on priority information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple SCells are activated simultaneously using one MAC signaling, then activation efficiency is improved, but cell search completeness deteriorates for FR2 PUCCH SCells
Solution Approach 1:
The patent applies local quality by differentiating the cell search requirement for FR2 PUCCH SCells from other FR2 SCells. Specifically, it identifies that PUCCH SCells configured with uplink control channels have different characteristics and require cell search, whereas regular FR2 SCells can skip it. This localized differentiation ensures that the activation process adapts to specific cell types, maintaining both efficiency and completeness.
Solution Approach 2:
The patent implements preliminary action by determining in advance which SCells require cell search based on their configuration (PUCCH vs. regular). The terminal device identifies FR2 PUCCH SCells before activation and allocates specific time domain resources for their cell search, ensuring that the search is performed at the appropriate time without compromising the simultaneous activation efficiency.
2Reliability
If cell search is performed serially for multiple SCells, then search completeness is improved, but activation time increases
Solution Approach 1:
The patent applies segmentation by dividing the cell search process into distinct segments based on cell type and frequency range. It separates FR2 PUCCH SCells requiring cell search from other SCells that can skip it. Additionally, it segments the time domain resources to allocate specific slots for FR2 PUCCH cell search, allowing parallel processing where possible and reducing overall activation time while maintaining completeness.
3Speed
If FR2 SCells skip cell search to reduce activation time, then activation speed is improved, but search reliability deteriorates for PUCCH SCells
Solution Approach 1:
The patent applies local quality by making the cell search decision cell-specific rather than frequency-range-wide. It identifies that FR2 PUCCH SCells have different requirements from regular FR2 SCells and applies different search rules accordingly. This localized approach ensures that search reliability is maintained for PUCCH SCells while preserving activation speed for other SCells that can safely skip the search.
Data Source
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AI summary
This application provides a cell activation method, an apparatus, and a system, and is applied to the field of communication technologies. The cell activation method provided in this application includes: receiving first information, where the first information indicates to activate a plurality of secondary cells, the plurality of secondary cells include one FR2 secondary cell and N1 FR1 secondary cells that need to be searched, and N1 is a positive integer; and determining, based on the first information, a time domain resource used for searching the FR2 secondary cell. According to the cell activation method provided in this application, in a scenario in which the plurality of to-be-activated secondary cells include the FR2 secondary cell that needs to be searched, a terminal device may determine, based on the first information, the corresponding time domain resource used for searching the FR2 secondary cell, resolving a problem of how to search the FR2 secondary cell that needs to be searched in a scenario in which a plurality of SCells are simultaneously activated.