CSI Reporting With Power Offset Control for Energy-Efficient Base Stations
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in transmitting and receiving reference signals and measurement reports, particularly in energy-efficient network operations, leading to increased energy consumption and operational costs.
Innovation Solution
A method and apparatus for transmitting and receiving signals in a wireless communication system that involves configuring CSI-RS resources and CSI reports to account for multiple power offset values and antenna ports, allowing for efficient energy management by reducing unnecessary transmissions and adjusting power consumption dynamically.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If reference signals and measurement reports are transmitted frequently to maintain communication quality, then measurement precision is improved, but energy consumption increases
Solution Approach 1:
The patent implements periodic CSI-RS transmission with configurable periodicity (1ms, 2ms, 4ms, 8ms, 16ms, 32ms, 64ms, 128ms) and enables energy-efficient operation by allowing the base station to suspend or stop reference signal transmission when channel conditions are stable, thereby reducing energy consumption while maintaining adequate measurement precision through periodic updates
2Adaptability or versatility
If multiple CSI-RS resources are configured for different antenna ports and power offsets, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent divides the CSI-RS configuration into multiple independent resources, each associated with specific antenna ports and power offsets. The UE measures each CSI-RS resource separately and reports CSI for each resource, enabling the system to adapt to different transmission scenarios while keeping each individual measurement process simple and manageable
Solution Approach 2:
The patent introduces dynamic configuration where the base station can activate or suspend specific CSI-RS resources based on current transmission needs. The UE dynamically adjusts its measurement and reporting behavior according to which resources are currently active, allowing the system to adapt to changing conditions without permanently maintaining complex configurations for all possible scenarios
3Loss of information
If CSI reporting is performed for all configured resources, then information completeness is improved, but loss of energy increases
Solution Approach 1:
The patent allows the base station to suspend or stop transmission of specific CSI-RS resources when they are not needed for current data transmission. The UE accordingly suspends measurement and reporting for those suspended resources, extracting only the necessary measurement activities and eliminating energy waste on unnecessary reporting while maintaining complete information for active resources
Data Source
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AI summary
A methods and an apparatus for transmitting and receiving a signal in a wireless communication system, disclosed in the present specification, perform CSI reporting. The CSI reporting comprises a plurality of sub-reports, wherein the sub-reports may be for different power offset values and/or number of APs.