CSI Report Configuration for Dynamic Antenna Port Changes
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication applications, dynamic adjustments in network devices, such as adjusting the number of antennas or transmission power, can lead to inaccurate or untimely Channel State Information (CSI) measurements and reports, affecting transmission performance.
Innovation Solution
A method and apparatus for configuring channel state information (CSI) reporting, where a terminal equipment receives configurations for first and second reference signal resources with different numbers of ports (M and N ports, respectively) to enable accurate CSI reporting during resource adjustments, such as for energy saving.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a network device dynamically adjusts the number of antennas or transmission power to save energy, then energy consumption is reduced, but channel state information measurement accuracy and timeliness deteriorate
Solution Approach 1:
The network device transmits indication information in advance to notify the terminal equipment about upcoming changes in reference signal resources (such as number of ports, time-domain positions, frequency-domain positions). This allows the terminal equipment to prepare and perform CSI measurements at appropriate times, ensuring measurement accuracy even when the network device dynamically adjusts resources for energy saving.
Solution Approach 2:
The terminal equipment reports CSI based on the indicated reference signal resources, providing feedback to the network device about the actual channel state. This feedback mechanism enables the network device to adjust its resource allocation and transmission parameters to maintain both energy efficiency and transmission performance.
2Loss of energy
If a network device dynamically adjusts the number of antennas or transmission power, then energy consumption is reduced, but transmission performance deteriorates
Solution Approach 1:
The network device provides advance notification through indication information about changes in reference signal resources, enabling the terminal equipment to perform CSI measurements and reports at optimal times. This ensures that the network device has accurate channel state information for scheduling decisions, maintaining transmission performance while allowing energy-saving adjustments.
Solution Approach 2:
The terminal equipment provides CSI feedback based on the indicated resources, allowing the network device to make informed scheduling decisions. This feedback loop ensures that energy-saving adjustments do not compromise transmission reliability, as the network device can adapt its transmission strategy based on actual channel conditions.
3Loss of energy
If the terminal equipment performs CSI measurement and reporting with dynamically adjusted reference signal resources, then energy saving is achieved, but CSI reporting timeliness and accuracy deteriorate
Solution Approach 1:
The network device transmits indication information in advance, specifying the time-domain and frequency-domain positions of reference signal resources before the terminal equipment performs CSI measurements. This preliminary notification ensures that the terminal equipment can perform measurements at the correct times without delay, maintaining CSI reporting timeliness while enabling energy-saving resource adjustments.
Data Source
AI summary
A channel state information report configuration method and apparatus. The method includes: a terminal equipment receives a first resource configuration, the first resource configuration being at least used for configuring first reference signal resources with M ports; the terminal equipment receives channel state information report configuration, wherein the channel state information report configuration is used to configure report of first channel state information and/or second channel state information, the first channel state information being associated with the first reference signal resources with the M ports, and the second channel state information being associated with second reference signal resources with N ports; where, N is less than M.