CSI Report Configuration for Wireless Network Energy Saving
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Solution Overview
Problem
The increasing number of communication devices in 5G wireless communication systems leads to higher communication traffic, necessitating efficient management of channel state information (CSI) to optimize network energy saving (NES) while maintaining high data transmission rates and low latency.
Innovation Solution
A method and apparatus for efficiently configuring CSI reports in wireless communication systems, where terminals receive CSI report configuration information from base stations, generate CSI reports based on this information, and transmit them back, allowing for channel measurement and reporting in units of sub-configurations, thereby optimizing energy usage by activating only necessary antenna ports.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If CSI measurement and reporting is performed for all antenna ports, then channel state information accuracy is improved, but base station power consumption increases
Solution Approach 1:
The patent divides the antenna ports into multiple groups (first antenna port group and second antenna port group) with different measurement and reporting configurations. This segmentation allows selective activation of measurement resources based on traffic conditions, enabling accurate CSI measurement for active ports while reducing overall power consumption by deactivating measurement resources for inactive ports.
2Productivity
If all antenna ports are activated for data transmission, then data transmission rate is improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic activation and deactivation of antenna ports based on traffic conditions. The base station can switch between different antenna port groups (full activation, partial activation, or deactivated state) according to data transmission requirements, enabling adaptive power consumption that matches actual productivity needs.
Solution Approach 2:
The patent changes the operational state parameters of antenna ports between different modes (activated/inactive/deactivated) to optimize the balance between data transmission rate and power consumption. Different CSI report configurations are applied to different antenna port groups based on their activation state.
3Measurement precision
If CSI reporting is configured for all antenna ports, then channel measurement accuracy is improved, but network energy saving is reduced
Solution Approach 1:
The patent segments antenna ports into different groups with distinct CSI reporting configurations. The first antenna port group uses one configuration while the second group uses another, allowing the network to save energy by configuring CSI reporting only for actively used ports rather than all ports.
Solution Approach 2:
The patent applies partial action by configuring CSI reporting for only the necessary antenna port groups rather than all antenna ports. This selective approach provides sufficient channel measurement accuracy for active transmission while avoiding the energy waste of measuring and reporting on inactive ports.
Data Source
AI summary
Provided are a method and apparatus for efficiently performing CSI report configuration for network energy saving in a wireless communication system and generating a CSI report based on the CSI report configuration. A base station transmits channel state information (CSI) report configuration information to a terminal. The terminal generates a CSI report based on the CSI report configuration information and transmit the CSI report to the base station. The CSI report configuration information includes at least one sub configuration information, and the CSI report includes at least one CSI obtained in units of sub configuration based on the at least one sub configuration information.