Cell Management Using L1/L2 Commands for Fast Cell Transitions
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Solution Overview
Problem
There is no specific solution for triggering cell management based on Layer 1 (L1) or Layer 2 (L2) commands in existing communication technologies.
Innovation Solution
A cell management method involving a terminal sending measurement results to a network device, receiving L1 or L2 commands, and performing cell management operations such as primary cell adding, changing, handover, or secondary cell changing based on these commands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If Layer 3 commands are used for cell management, then the management process is standardized and reliable, but the response time is slow and cannot meet real-time requirements
Solution Approach 1:
The patent segments the cell management function by introducing separate L1 and L2 command mechanisms independent from the traditional L3 RRC reconfiguration process. The L1 command enables physical layer-based fast switching while the L2 command provides MAC layer control, allowing real-time cell management without relying solely on slower L3 procedures.
Solution Approach 2:
The patent adds new control dimensions by introducing L1 and L2 command layers above the existing L3 RRC layer. This dimensional expansion allows cell management to occur at multiple protocol layers simultaneously, with L1/L2 handling time-critical operations and L3 providing higher-level configuration, thereby achieving both speed and reliability.
2Adaptability or versatility
If frequent cell measurements are performed to track time-varying channel conditions, then the cell management can respond to changing conditions, but the measurement overhead increases and measurement accuracy decreases due to frequency limitations
Solution Approach 1:
The patent applies preliminary action by having the terminal perform measurements according to pre-configured measurement occasions and reporting periodicities rather than continuously. The network device pre-configures measurement parameters and the terminal executes measurements at predetermined intervals, reducing the frequency of measurements while maintaining adequate adaptability to channel changes.
Solution Approach 2:
The patent implements periodic action through measurement reporting configured with specific periodicities. Instead of continuous measurement, the terminal performs measurements at regular intervals and reports to the network device, which then determines appropriate cell management timing. This periodic approach reduces measurement overhead while maintaining sufficient adaptability.
3Speed
If L1 or L2 commands are introduced for fast cell management, then the response speed improves, but the complexity of the command triggering mechanism increases
Solution Approach 1:
The patent employs feedback mechanisms where the terminal reports measurement results to the network device, which then determines whether L1/L2 commands should be triggered. The network device receives measurement information, evaluates whether fast cell management is needed, and selectively activates L1/L2 commands only when appropriate, simplifying the triggering logic through condition-based activation rather than continuous complex processing.
Data Source
AI summary
A cell management method, an apparatus, a terminal and a network device are provided, which relate to the field of communication technology. The cell management method includes: sending, by a terminal, a measurement result to a network device; receiving, by the terminal, a first command which is sent by the network device according to the measurement result; where the first command is a Layer 1 command or a Layer 2 command; performing, by the terminal, a cell management according to the first command.