SCell Activation L3 Reporting for Mixed Known and Unknown Cells
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Solution Overview
Problem
Existing conditions for multiple secondary cell (SCell) activation in wireless communication networks are too restrictive, requiring all SCells to be unknown, which limits scenarios where some SCells are known and others are unknown, hindering efficient L3 reporting and activation delay reduction.
Innovation Solution
A method for determining whether Layer 3 (L3) reporting is triggered based on the status of cells and association information, allowing L3 reporting for unknown cells even if some SCells are known, thereby reducing activation delay by considering cell status and association information across different frequency ranges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If existing conditions for multiple SCell activation are applied, then L3 reporting is triggered only when all SCells are unknown, but this restricts L3 reporting in scenarios where some SCells are known and others are unknown, increasing activation delay
Solution Approach 1:
The patent applies local quality by differentiating the treatment of individual SCells based on their specific status (known or unknown). Instead of applying a uniform condition to all SCells, the invention triggers L3 reporting for each unknown SCell individually when activated, while known SCells do not trigger reporting. This localized approach allows L3 reporting to be applied selectively to only those cells that need it, reducing unnecessary reporting overhead while ensuring timely reporting for unknown cells, thereby resolving the contradiction between activation delay and adaptability.
2Productivity
If L3 reporting is triggered for all unknown cells in multiple SCell activation, then activation delay is reduced, but the existing restrictive conditions limit its application to only scenarios where all SCells are unknown
Solution Approach 1:
The patent applies segmentation by dividing the multiple SCells into separate individual entities for evaluation. Instead of treating the group of SCells as a single unit with a unified condition, the invention independently assesses each SCell's activation status and triggers L3 reporting on a per-cell basis. This segmentation allows the system to handle mixed scenarios where some SCells are known and others are unknown, expanding scenario coverage while maintaining activation efficiency for unknown cells.
3Device complexity
If the condition requires all SCells to be unknown for L3 reporting, then the reporting mechanism is simple to implement, but it fails to optimize activation delay in scenarios with mixed known and unknown SCells
Solution Approach 1:
The patent applies partial action by implementing L3 reporting selectively for only those SCells that are unknown at the time of activation, rather than requiring all SCells to meet a uniform condition. This partial application of the reporting mechanism maintains relative simplicity in implementation while optimizing activation delay for the specific subset of unknown cells that need reporting. The solution avoids the complexity of comprehensive evaluation while still achieving the performance benefit where needed.
Data Source
AI summary
Embodiments of the present disclosure disclose devices, methods and apparatuses for cell activation triggered layer 3 (L3) reporting. In an aspect, a terminal device receives a cell activation command to activate a plurality of cells in a frequency band. Based on status of the plurality of cells and association information between cells comprising at least the plurality of cells to be activated in the frequency band, the terminal device determines whether L3 reporting is to be triggered. Based on determining that the L3 reporting is to be triggered, the terminal device transmits an L3 report. By considering the cell status e.g. known/unknown, and the association information among the cells on the same band, the terminal device may determine if L3 reporting is to be triggered for cells on different frequency bands, for example, on frequency range 1(FR1) and frequency range 2(FR2), respectively, and hence achieves a faster cell activation.