Secondary Cell Activation Specific CSI Reference Signal Configuration
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Solution Overview
Problem
The existing methods for activating secondary cells in radio communication networks, which use temporary reference signals to accelerate the process, only partially accelerate the activation/deactivation process and result in increased network overhead when trying to shorten the periodicity of channel state information reference signals.
Innovation Solution
The method involves determining a time domain resource range for a secondary cell activation specific channel state information reference signal (SAS-CSI RS) and transmitting it within this range, allowing the terminal to receive and generate valid CSI more rapidly without continuously transmitting the signal, thus reducing network overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the periodicity of channel state information reference signals is shortened to accelerate secondary cell activation, then the activation speed is improved, but the network overhead increases
Solution Approach 1:
The patent applies periodic action by configuring the terminal to measure SAS-CSI RS signals only at specific periodic intervals rather than continuously. The network configures a measurement periodicity parameter that defines when the terminal should measure the reference signal, thereby reducing unnecessary measurements and lowering network overhead while still enabling fast secondary cell activation when needed.
Solution Approach 2:
The patent implements preliminary action by pre-configuring the terminal with measurement configurations including time domain resource ranges and periodicity parameters before secondary cell activation is needed. This allows the terminal to be ready to quickly measure and report CSI when activation occurs, without requiring continuous signal transmission or measurement in advance.
2Loss of time
If temporary reference signals are used to accelerate activation process, then activation time is reduced, but the acceleration is only partial and cannot be optimized further
Solution Approach 1:
The patent applies parameter changes by introducing and optimizing multiple configuration parameters including measurement periodicity, time domain resource ranges, and association relationships between reference signals and secondary cells. By adjusting these parameters, the system achieves more significant activation time reduction compared to simply using temporary reference signals, transforming the partial acceleration into comprehensive optimization.
Solution Approach 2:
The patent implements dynamics by making the measurement configuration flexible and adaptable. The network can dynamically adjust measurement periodicity and time domain resource ranges based on current network conditions and secondary cell activation requirements. This dynamic configuration allows the system to optimize activation speed for each specific scenario rather than using a fixed temporary reference signal approach.
3Measurement precision
If continuous transmission of channel state information reference signals is performed, then measurement accuracy is maintained, but network overhead and energy consumption increase
Solution Approach 1:
The patent applies periodic action by configuring the terminal to measure SAS-CSI RS signals only at specific periodic intervals rather than continuously. The network configures a measurement periodicity parameter that defines when the terminal should measure the reference signal, thereby reducing unnecessary measurements and lowering network overhead while still enabling fast secondary cell activation when needed.
Solution Approach 2:
The patent implements local quality by concentrating measurement resources in specific time domain ranges that are locally optimized for secondary cell activation. Instead of uniform continuous measurement, the terminal focuses measurement efforts in configured time windows where SAS-CSI RS signals are transmitted, achieving accurate CSI measurement only when and where it is most needed for activation decisions.
Data Source
AI summary
A method and apparatus for transmitting channel state information (CSI) and reference signals to improve utilization of a wireless network. The utilization of the wireless network is improved by: determining a time domain resource range of a secondary cell activation specific channel state information reference signal (SAS-CSI RS); receiving the SAS-CSI RS according to the time domain resource range; and generating valid CSI according to the SAS-CSI RS and transmitting the valid CSI to a network side device.