Reference Signal Resource Switching for Accurate CSI Reporting
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Solution Overview
Problem
The dynamic adjustment of antennas or transmission power in wireless communication applications can cause inaccurate or untimely Channel State Information (CSI) measurement and reporting, affecting transmission performance, particularly in energy-saving modes.
Innovation Solution
A method and apparatus for configuring reference signal resources, allowing a terminal equipment to determine a second reference signal resource with fewer ports (N) based on a first resource configuration with more ports (M), using parameters such as PortConfig and CSI-ReportConfig to efficiently and accurately perform CSI measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the network device dynamically adjusts the number of antennas or transmission power to save energy, then energy consumption is reduced, but the channel state information measurement becomes inaccurate or untimely
Solution Approach 1:
The patent applies preliminary action by configuring a second reference signal resource with reduced ports before the network device actually adjusts its antenna configuration. This pre-configured resource allows the terminal equipment to prepare CSI measurement capabilities in advance, ensuring that when the network device dynamically adjusts antennas for energy saving, the terminal can immediately perform accurate measurements without delay or inaccuracy.
Solution Approach 2:
The patent implements dynamics by establishing a mechanism where the network device can dynamically switch between different reference signal resources (first resource with M ports and second resource with N ports) based on current operational needs. This dynamic switching capability allows the system to adapt CSI measurement configurations to match the actual antenna configuration, resolving the contradiction between energy saving and measurement accuracy.
2Adaptability or versatility
If the network device dynamically adjusts the number of antennas or transmission power, then network flexibility and energy efficiency are improved, but the transmission performance is affected due to inaccurate or untimely CSI reporting
Solution Approach 1:
The patent uses preliminary action by pre-configuring the terminal equipment with a second reference signal resource that has fewer ports (N < M) before the network device performs dynamic adjustment. This ensures that when the network device changes its antenna configuration to improve flexibility, the terminal equipment already has the necessary measurement resources prepared, maintaining reliable CSI reporting and thus preserving transmission performance.
Solution Approach 2:
The patent implements feedback by establishing a mechanism where the terminal equipment reports CSI based on measurements from the configured reference signal resources. This feedback loop ensures that the network device receives accurate channel state information even after dynamic adjustments, allowing it to maintain optimal transmission parameters and preserve reliability while achieving network flexibility.
3Productivity
If more antennas and greater bandwidths are used to handle advanced services, then data rates are improved, but energy consumption increases significantly
Solution Approach 1:
The patent applies partial action by configuring a second reference signal resource with fewer ports (N) than the full number of antennas (M). This partial configuration allows the system to perform energy-efficient CSI measurements using only the necessary ports, rather than requiring all antennas to be active for measurement purposes. Consequently, the network can achieve high data rates when needed while reducing energy consumption by using a subset of antennas for measurement tasks.
Data Source
AI summary
A method and an apparatus for configuring reference signal resource. The method includes: a terminal equipment receives a first resource configuration, the first resource configuration at least including a first parameter, the first parameter being used for configuring a first reference signal resource with M ports; the terminal equipment receives a second resource configuration and/or a channel state information report configuration; wherein the first resource configuration or the second resource configuration or the channel state information report configuration is at least further used for the terminal equipment to determine a second reference signal resource with N ports; where, N is less than M.