L1/L2 Cell Activation Priority for Wireless Mobility
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Solution Overview
Problem
Current wireless communication systems, particularly in 5G NR, face challenges in efficiently managing cell activation and deactivation for L1/L2 mobility, leading to suboptimal quality of service, increased latency, and higher power consumption due to the lack of efficient cell prioritization and rapid switching mechanisms.
Innovation Solution
The implementation of a method that allows user equipment (UE) to receive L1 or L2 mobility cell configurations and signaling for a set of cells, enabling the activation or deactivation of cells in a priority order using L1 or L2 signaling, thereby optimizing cell activation and deactivation processes for improved mobility management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cells are activated without priority ordering, then all cells can be activated for data transfer, but activation latency increases and power consumption rises
Solution Approach 1:
The system pre-configures priority information for each cell before activation is needed. When activation signaling is received, the UE can immediately activate cells in the predetermined priority order without needing to make decisions during the activation process, thus reducing activation latency while ensuring quality of service through prioritized cell selection
2Productivity
If multiple cells are activated simultaneously, then data transfer capacity increases, but power consumption increases due to activation of less important cells
Solution Approach 1:
The patent applies local quality by assigning different priority levels to different cells based on their specific characteristics and importance. The UE activates cells selectively according to their priority information, ensuring that high-priority cells essential for quality of service are activated while lower-priority cells that would consume additional power are deactivated, thus optimizing the balance between data transfer capacity and power consumption
3Reliability
If cell activation follows L3 signaling procedures, then comprehensive cell configuration is achieved, but activation speed decreases
Solution Approach 1:
The patent segments the cell activation process into two parts: L3 signaling is used for initial cell configuration and priority information setup, while L1/L2 signaling is used for rapid activation. This segmentation allows the system to maintain comprehensive cell configuration through L3 while achieving fast activation speeds through the more efficient L1/L2 signaling mechanism for the actual activation command
Data Source
AI summary
An apparatus for wireless communication at a UE is provided. The apparatus is configured to receive a layer 1 (L1) or layer 2 (L2) mobility cell configuration for a set of cells for L1 or L2 inter-cell mobility. The set of cells include multiple cells, and each cell in the set of cells is able to be activated or deactivated for data and/or control transfer using L1 or L2 signaling. The apparatus is further configured to receive L1 or L2 signaling indicating multiple activated cells, and activate one or more cells in the multiple activated cells in the priority order for the data and/or control transfer using L1 or L2 signaling. The apparatus provides configuration, cell activation or deactivation in an optimized order, and associated signaling to enable L1/L2 mobility for more efficient and robust mobility management.