Multi-Resource CSI Reporting for Energy-Saving Antenna Modes
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Solution Overview
Problem
In wireless communication applications, energy-saving modes in 5G networks can cause inaccurate or untimely reporting of Channel State Information (CSI), affecting transmission performance due to dynamic adjustments in antennas or transmission power.
Innovation Solution
A method and apparatus for transmitting and receiving CSI reports, utilizing a configuration associated with a first and second reference signal resource for channel measurement, allowing for accurate CSI reporting even in energy-saving scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a network device dynamically adjusts the number of antennas or transmission power for energy saving, then energy consumption is reduced, but channel state information reporting becomes inaccurate or untimely
Solution Approach 1:
The network device transmits multiple reference signal resources (first and second reference signal resources) in advance, corresponding to different antenna adjustment modes. The terminal equipment performs channel measurement on these pre-transmitted reference signals and reports CSI accordingly, ensuring accurate CSI reporting even when the network device dynamically adjusts antennas or power without timely notification.
2Use of energy by moving object
If a network device dynamically adjusts the number of antennas or transmission power for energy saving, then energy consumption is reduced, but transmission performance deteriorates
Solution Approach 1:
The network device pre-configures multiple reference signal resources corresponding to different antenna adjustment modes before dynamic adjustment occurs. This allows the terminal to maintain accurate CSI reporting across different transmission configurations, ensuring reliable transmission performance even during energy-saving operations.
Solution Approach 2:
The system dynamically switches between different reference signal resources based on the antenna adjustment mode. When the network device adjusts its antenna configuration, it switches to the corresponding reference signal resource, enabling the terminal to report accurate CSI for the current transmission state, thus maintaining transmission reliability under dynamic energy-saving conditions.
3Use of energy by moving object
If traditional CSI reporting methods are used in energy-saving mode, then energy consumption is reduced, but uplink resources are wasted due to inaccurate reporting requiring retransmission
Solution Approach 1:
The network device pre-transmits multiple reference signal resources corresponding to different antenna configurations before dynamic adjustment. This ensures the terminal has accurate channel measurement data ready, reducing the need for retransmissions and optimizing uplink resource utilization while maintaining energy-saving operation.
Data Source
AI summary
An apparatus for transmitting channel state information report, configured in a terminal equipment, includes: a receiver configured to receive a channel state information reporting configuration, wherein M reference signal resources being associated with the channel state information reporting configuration, the channel state information reporting configuration at least including port information and/or power information and/or codebook information of the M reference signal resources; a transmitter configured to transmit a channel state information report according to the channel state information reporting configuration; and wherein the channel state information report at least includes M pieces of channel state information, one of the M pieces of channel state information being associated with one of the M reference signal resources; wherein the port information is for antenna ports or reference signal ports, and the code book information is a codebook type parameter being expected to be set to type 1.