Secondary Cell Activation via Dynamic Reference Signal Configuration
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Solution Overview
Problem
Current secondary cell activation methods in wireless communications networks are inflexible and inefficient, relying on fixedly configured common reference signals, which limits the ability to quickly activate secondary cells and is not universally applicable across different systems.
Innovation Solution
The method involves an access network device sending an activation command to a terminal device, along with first configuration information and a first reference signal, allowing the terminal device to perform channel measurements based on dynamic configuration, improving flexibility and efficiency by avoiding reliance on fixedly configured common reference signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a fixedly configured common reference signal (CRS) is used for secondary cell activation, then the activation method is simple to implement, but the activation flexibility and efficiency are reduced
Solution Approach 1:
The patent applies dynamics by transitioning from a fixed, static reference signal configuration to a dynamic, configurable reference signal mechanism. The network device can dynamically configure reference signals for secondary cells based on actual activation needs, allowing the system to adapt its behavior to different scenarios rather than being constrained by predetermined fixed configurations.
Solution Approach 2:
The patent implements parameter changes by allowing the network device to modify reference signal configuration parameters (such as time-domain positions, frequency-domain positions, and resource allocations) dynamically. This enables the system to optimize reference signal placement and resources based on current network conditions and activation requirements, thereby improving activation efficiency while maintaining implementation feasibility.
2Device complexity
If a fixedly configured common reference signal is used, then the system configuration is simple, but the response time to activation commands increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring reference signal parameters and resources in advance through RRC signaling, so that when a secondary cell activation command is received, the terminal device can immediately use the pre-prepared reference signal configuration without waiting for additional configuration messages. This reduces activation delay while keeping the overall system configuration manageable through advance setup.
Solution Approach 2:
The patent enables dynamic reference signal configuration that can be adjusted based on activation requirements. The network device can dynamically select and configure appropriate reference signals for secondary cells, allowing the system to respond more quickly to activation commands compared to fixed configurations, while maintaining reasonable system complexity through structured dynamic management.
3Productivity
If dynamic reference signal configuration is implemented, then activation flexibility and efficiency are improved, but the signaling overhead increases
Solution Approach 1:
The patent applies partial action by implementing dynamic reference signal configuration selectively rather than universally. The network device can choose to apply dynamic configuration only to secondary cells that require it, while leaving other cells with fixed configurations. This partial implementation achieves activation efficiency improvements for critical cells without incurring the full signaling overhead of universal dynamic configuration.
Solution Approach 2:
The patent implements local quality by allowing different reference signal configuration approaches (fixed vs. dynamic) to be applied to different secondary cells based on their specific requirements. Each secondary cell can have its own customized reference signal configuration, enabling the system to optimize activation efficiency for cells that need it while minimizing signaling overhead for cells that don't require dynamic configuration.
4Adaptability or versatility
If dynamic reference signal configuration is used, then the system is more adaptable to different scenarios, but the configuration complexity increases
Solution Approach 1:
The patent applies universality by designing a reference signal configuration mechanism that can serve multiple functions and scenarios. The same dynamic configuration framework can handle different secondary cell activation scenarios, various reference signal types, and different network conditions, making the system highly adaptable without requiring separate configuration mechanisms for each scenario. This universal approach manages complexity through consolidation rather than proliferation of separate systems.
Data Source
AI summary
A secondary cell activation method and apparatus relating to the communications field are described herein. The method may include sending, by an access network device, an activation command to a terminal device, where the activation command indicates activating a secondary cell. The method may also include sending, by the access network device, first configuration information of a first reference signal to the terminal device. Furthermore, the method may include sending, by the access network device, the first reference signal to the terminal device according to the first configuration information, where the first reference signal is used to obtain a channel measurement result of the secondary cell. According to secondary cell activation methods described herein, a flexible and efficient secondary cell activation mechanism can be provided, so as to improve secondary cell activation efficiency.