Aggregated CSI Measurement for Lower Base Station Power Use
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Solution Overview
Problem
The high power consumption and operational costs associated with large-scale CSI measurement due to the configuration of a large number of CSI-RS ports in wireless communication systems, particularly in large-scale array antenna technologies, are not effectively addressed by existing technologies.
Innovation Solution
Implementing a method and apparatus for aggregated CSI measurement, where a terminal device receives configuration information to measure aggregated CSI based on a reduced number of channel measurement signal resources, reducing the number of time domain symbols required for measurement and enabling power saving functions in network devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a large quantity of CSI-RS ports are configured to measure channels on each antenna port, then system capacity is improved, but power consumption of the base station increases
Solution Approach 1:
The patent divides the CSI measurement process into two distinct types: type 1 CSI measurement using single CSI-RS resources, and type 2 CSI measurement using multiple CSI-RS resources. This segmentation allows the system to selectively apply different measurement approaches based on operational requirements, enabling capacity optimization without always incurring the full power cost of multi-resource measurement
Solution Approach 2:
The patent introduces dynamic switching between type 1 and type 2 CSI measurement modes based on operational conditions. The network can dynamically configure which measurement type to use, allowing the system to adapt power consumption levels to actual capacity requirements rather than operating at maximum power continuously
2Adaptability or versatility
If a large quantity of CSI-RS ports are configured, then capability of parallel multi-stream data transmission is enhanced, but operation costs increase
Solution Approach 1:
The patent changes the parameter of CSI measurement configuration by introducing type indicators that distinguish between type 1 (single resource) and type 2 (multiple resources) measurements. This parameter change enables the system to adjust the measurement capability level according to actual needs, maintaining multi-stream transmission capability when required while reducing operational expenditure when full capability is not needed
3Loss of time
If aggregated CSI measurement is performed on multiple channel measurement signal resources, then quantity of time domain symbols occupied is reduced, but measurement complexity increases
Solution Approach 1:
The patent introduces an intermediary mechanism where the network device configures and indicates the aggregated CSI measurement parameters to the terminal device. This intermediary configuration approach simplifies the terminal's measurement process by providing pre-defined aggregated resource sets, reducing the terminal's computational burden while still achieving time domain symbol reduction through aggregation
Data Source
AI summary
A channel state information measurement method includes receiving, by a terminal device, configuration information from a network device. The configuration information includes first indication information and second indication information. The first indication information indicates K channel measurement signal resources, K is greater than or equal to 2, the second indication information indicates the terminal device is to measure aggregated channel state information (CSI) based on N channel measurement signal resources, and N is less than or equal to K. The method also includes measuring, by the terminal device, the N channel measurement signal resources based on the configuration information. The method further includes obtaining, by the terminal device, the aggregated CSI through calculation based on N measurement results. The aggregated CSI is CSI of M antenna ports, and M is a sum of quantities of antenna ports of the N channel measurement signal resources.