CSI Reporting Configuration Switching for Antenna Power Saving
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Solution Overview
Problem
The disabling of antennas in network devices for reducing power consumption leads to high signaling overheads due to frequent reconfiguration of channel state information-reference signal report configurations, which affects accurate channel state information measurement and reporting.
Innovation Solution
A communication method and apparatus that reduces reconfiguration overheads by using indication information to switch resource and codebook configurations, allowing for a delayed effective configuration change, thereby standardizing channel state information measurement during switching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by stationary object
If antenna disabling is implemented to reduce power consumption, then power consumption is reduced, but signaling overhead increases due to frequent reconfiguration
Solution Approach 1:
The patent segments the configuration update process by introducing multiple candidate configurations (first configuration, second configuration, third configuration) that can be pre-prepared and switched between. Instead of frequent full reconfigurations, the system divides the configuration space into discrete candidates that can be selected based on antenna disabling states, thereby reducing the frequency and overhead of configuration updates while maintaining power savings.
Solution Approach 2:
The patent applies preliminary action by pre-configuring multiple candidate configurations (first, second, and third configurations) before antenna disabling occurs. These configurations are prepared in advance with different antenna port combinations, allowing the terminal to quickly switch to an appropriate pre-prepared configuration when antenna disabling is activated, avoiding the need for frequent post-hoc reconfigurations and reducing signaling overhead.
2Measurement precision
If frequent reconfiguration is performed to maintain accurate channel state information, then measurement accuracy is maintained, but signaling overhead increases
Solution Approach 1:
The patent introduces dynamic configuration switching capability where the terminal can adaptively select between multiple pre-configured configurations based on the current antenna disabling state. The network can dynamically indicate which configuration to use through indication information, allowing the system to maintain accurate channel state information measurement by selecting the appropriate configuration without requiring frequent full reconfigurations, thus reducing signaling overhead while preserving measurement precision.
Solution Approach 2:
The patent changes the configuration parameters by introducing multiple candidate configurations with different antenna port combinations and reference signal configurations. Instead of maintaining a single static configuration, the system allows parameter changes by switching between pre-defined configuration sets, enabling accurate channel state information measurement under different antenna disabling scenarios without requiring frequent complete reconfigurations.
3Reliability
If immediate reconfiguration is performed upon antenna disabling, then configuration accuracy is maintained, but system complexity increases
Solution Approach 1:
The patent applies preliminary action by preparing multiple candidate configurations in advance before antenna disabling occurs. These configurations are pre-configured with different antenna port combinations and reference signal settings. When antenna disabling is activated, the terminal can immediately switch to an appropriate pre-prepared configuration without requiring complex real-time calculation or reconfiguration procedures, thereby maintaining configuration accuracy while reducing system complexity.
Solution Approach 2:
The patent uses copying by creating multiple candidate configurations that are copies or variants of the base configuration with different antenna port combinations. Instead of generating new configurations from scratch during reconfiguration, the system uses pre-copied configuration templates that can be quickly selected and activated, simplifying the reconfiguration process while maintaining configuration accuracy for different antenna disabling scenarios.
Data Source
AI summary
The present disclosure relates to communication methods and apparatuses. In one example method, a network device sends a first message to a terminal, where the first message includes configuration information including K1 resource configurations and/or M1 codebook configurations, the configuration information includes a report configuration type, the report configuration type is used to configure reported time domain behavior including periodic reporting or semi-persistent reporting. The network device sends, to the terminal, first indication information indicative of a first configuration in the configuration information, and the first configuration includes a first resource configuration in the K1 resource configurations, and/or the first configuration includes a first codebook configuration in the M1 codebook configurations. The terminal measures channel state information based on the first configuration.