Communication Apparatus TRS Resource Selection
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Solution Overview
Problem
In mobile communication systems, there is a challenge in appropriately selecting Tracking Reference Signal (TRS) resource set configurations from multiple configurations transmitted in a system information block, which can lead to inefficiencies in power consumption and radio resource utilization due to unclear selection processes.
Innovation Solution
A communication apparatus and method that includes a controller to acquire a system information block with condition information for selecting TRS resource set configurations, allowing the apparatus to choose the appropriate TRS resource set configuration for time and frequency synchronization, reducing power consumption and optimizing radio resource utilization by using condition-specific selection criteria.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple TRS resource set configurations are transmitted in the system information block, then the adaptability of the system is improved, but the device complexity increases due to unclear selection processes
Solution Approach 1:
The communication apparatus autonomously selects an appropriate TRS resource set configuration from multiple configurations by evaluating predetermined criteria such as bandwidth part characteristics, frequency range, and subcarrier spacing. This self-service mechanism eliminates the need for additional base station signaling or complex coordination, thereby reducing device complexity while maintaining adaptability across diverse network conditions
Solution Approach 2:
The system employs multiple TRS resource set configurations with different parameters (bandwidth, frequency location, subcarrier spacing) to adapt to varying network conditions. The communication apparatus changes these parameters based on predetermined criteria, enabling flexible adaptation without increasing overall system complexity through intelligent parameter selection rather than exhaustive configuration management
2Use of energy by moving object
If the communication apparatus receives TRS without receiving SSB, then power consumption is reduced, but the reliability of synchronization may be compromised
Solution Approach 1:
The system changes the operational parameters of TRS reception by configuring multiple resource sets with different time-frequency characteristics, bandwidths, and periodicities. This allows the communication apparatus to select optimal TRS configurations that maintain synchronization reliability while minimizing power consumption by avoiding SSB reception, effectively decoupling reliability from the requirement of SSB reception
Solution Approach 2:
The system uses TRS resources as a substitute (copy) for SSB-based synchronization. By configuring multiple TRS resource sets that replicate the synchronization function traditionally provided by SSB, the system enables power-efficient operation where devices can achieve synchronization through TRS alone, eliminating the need to receive power-intensive SSB while maintaining reliability through redundant TRS configurations
Data Source
AI summary
A communication method includes the steps of: obtaining, from a base station, a system information block indicating a plurality of TRS resource set configurations in a radio resource control (RRC) idle state or an RRC inactive state; and receiving the TRS from the base station using a TRS resource set configuration selected from the plurality of TRS resource set configurations. The system information block includes condition information that specifies a condition under which the communication apparatus can select the TRS resource set configuration for each TRS resource set configuration.