CSI Beam Reception Using Dynamic Antenna Panel Activation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wireless communication systems face challenges in selecting appropriate beams for signal transmission and reception due to insufficient signaling information, leading to inefficiencies and potential misalignment between wireless devices and base stations.
Innovation Solution
Implementing a wireless device with multiple antenna panels and a base station that can activate or deactivate these panels based on aperiodic reference signals and transmission control indicators (TCI states), allowing for efficient data transfer and improved signal reliability by reporting activation status to the base station.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If antenna panels are continuously active, then signal reliability is maintained, but energy consumption increases and device complexity increases
Solution Approach 1:
The patent implements dynamic activation and deactivation of antenna panels based on transmission needs. The wireless device monitors whether an antenna panel needs to be activated for upcoming aperiodic reference signals and data transmissions, and dynamically switches panels on or off accordingly. This resolves the contradiction by maintaining signal reliability only when needed while reducing energy consumption during inactive periods.
Solution Approach 2:
The patent utilizes periodic monitoring and evaluation of transmission requirements to determine antenna panel activation. The device periodically assesses whether upcoming transmissions require specific antenna panels and activates only those needed panels, rather than keeping all panels continuously active. This periodic evaluation enables energy-efficient operation while maintaining reliability when required.
2Use of energy by moving object
If antenna panels are dynamically activated or deactivated, then energy efficiency improves, but latency increases due to activation/deactivation procedures
Solution Approach 1:
The patent applies preliminary action by determining in advance which antenna panels need to be activated based on scheduled aperiodic reference signals and data transmissions. The wireless device proactively activates the necessary panels before the actual transmission occurs, rather than waiting for transmission needs to arise. This advance preparation minimizes latency while maintaining energy efficiency.
Solution Approach 2:
The patent implements feedback mechanisms where the wireless device reports activation status of antenna panels to the base station, and the base station provides feedback about transmission requirements. This feedback loop enables coordinated activation decisions that balance energy efficiency with latency requirements, allowing the system to optimize the timing of panel activation based on real-time transmission needs.
3Measurement precision
If signaling information for beam selection is provided, then beam selection accuracy improves, but device complexity increases
Solution Approach 1:
The patent introduces transmission control indicators (TCI states) as intermediary elements that carry beam selection information. Instead of directly providing complex beam configuration data, the system uses TCI states as simplified intermediaries that encode necessary beam information. This intermediary approach enables accurate beam selection while reducing the complexity of direct signaling implementations.
Data Source
AI summary
Control information in wireless communications may be associated with a reference signal. A first transmission configuration indicator (TCI) state of at least two TCI states may be used to receive a reference signal based on the reference signal overlapping in time with a downlink channel that is indicated with the at least two TCI states.