Dynamic TRS CSI-RS Configuration for 5G Non-Connected Terminals
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Solution Overview
Problem
Current TRS/CSI-RS configuration methods in 5G NR are inflexible and do not adapt to changes in the communication environment, leading to increased power consumption and inefficiencies in signal transmission for terminals in non-connected states.
Innovation Solution
A method and apparatus for dynamically configuring TRS/CSI-RS by a base station, allowing selection from multiple preset configuration options based on current communication conditions, including port numbers, time and frequency domain resources, and transmission periods, to optimize signal transmission and reduce power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If fixed TRS/CSI-RS configuration is used, then device complexity is reduced, but adaptability to communication environment changes deteriorates
Solution Approach 1:
The patent implements dynamic TRS/CSI-RS configuration where the base station determines target configuration information from multiple preset configurations based on current communication conditions. This allows the system to adapt to environment changes while maintaining manageable complexity through predefined options.
Solution Approach 2:
The patent changes configuration parameters (port numbers, time/frequency domain resources, transmission periods) based on communication environment conditions. By selecting from preset configurations with different parameter sets, the system achieves adaptability without requiring complex real-time optimization.
2Measurement precision
If frequent SSB reception is performed for time-frequency synchronization, then synchronization accuracy is improved, but power consumption increases
Solution Approach 1:
The patent introduces TRS/CSI-RS as an intermediary signal for time-frequency synchronization. The terminal uses TRS/CSI-RS received during non-connected state to perform synchronization, reducing the need to frequently wake up and receive SSBs, thereby lowering power consumption while maintaining synchronization accuracy.
Solution Approach 2:
The patent implements periodic TRS/CSI-RS transmission with configurable periods. The terminal wakes up at predetermined intervals to receive TRS/CSI-RS for synchronization, avoiding continuous or frequent SSB reception and reducing overall power consumption while maintaining adequate synchronization accuracy.
3Loss of time
If TRS/CSI-RS transmission period is shortened, then wake-up time is reduced, but energy consumption increases
Solution Approach 1:
The patent allows dynamic adjustment of TRS/CSI-RS transmission period as a configurable parameter. The base station selects appropriate transmission periods from preset configurations based on communication conditions, enabling optimization between wake-up time and energy consumption for different scenarios.
Solution Approach 2:
The patent implements dynamic configuration of TRS/CSI-RS parameters including transmission period. The system adapts the transmission period based on current communication conditions, allowing flexible trade-off between reducing wake-up time and minimizing energy consumption.
4Adaptability or versatility
If flexible TRS/CSI-RS configuration is implemented, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent segments the configuration space into multiple preset TRS/CSI-RS configuration options. Instead of requiring continuous optimization, the base station selects from discrete predefined configurations, reducing processing complexity while maintaining flexibility to adapt to different communication conditions.
Solution Approach 2:
The patent prepares multiple TRS/CSI-RS configuration options in advance as preset configurations. The base station determines target configuration information by selecting from these pre-prepared options based on current conditions, avoiding complex real-time configuration generation and reducing processing complexity.
Data Source
AI summary
TRS/CSI-RS configuration methods and apparatuses are provided, the TRS/CSI-RS configuration method may include: determining target configuration information from a plurality of pieces of preset TRS/CSI-RS configuration information, where the target configuration information is for configuring one or more TRSs/CSI-RSs for a terminal in a non-connected state; and transmitting the target configuration information to the terminal for instructing the terminal to receive the one or more TRSs/CSI-RSs based on the target configuration information when the terminal is in the non-connected state. According to the present disclosure, the base station may flexibly select TRS/CSI-RS configuration, and by configuring one or more TRSs/CSI-RSs applicable to a current communication environment, efficiency of signal transmission may be subsequently improved and power consumption may be reduced.