CSI-RS Timing Configuration Using Reference SSB Position
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Solution Overview
Problem
The challenge in 5G systems is determining the accurate time domain position of channel state information-reference signals (CSI-RS) for precise communication and measurement, as existing methods lack clarity on the timing of these signals.
Innovation Solution
A communication method and apparatus that utilize timing information of a reference synchronization signal block to determine the time domain position of CSI-RS, enabling accurate configuration for terminal devices to perform measurements, using network devices to exchange configuration information and indication signals to identify a reference SSB.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If timing information of reference synchronization signal block is used to determine timing information of CSI-RS, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-establishing timing relationships between SSB and CSI-RS through configuration information exchange. The network device determines timing information of CSI-RS resources in advance based on reference SSB timing, allowing terminal devices to perform measurements accurately without real-time calculation complexity.
Solution Approach 2:
The patent uses configuration information as an intermediary to transfer timing relationships between network devices. The first network device sends configuration information about SSB and CSI-RS timing to the second network device, which then uses this intermediate information to determine accurate timing without direct complex processing.
2Productivity
If configuration information of multiple synchronization signal blocks is exchanged between network devices, then communication efficiency is improved, but loss of information increases
Solution Approach 1:
The patent extracts only the essential timing information from configuration data. Instead of exchanging complete configuration information for all SSBs, the system identifies and exchanges only the critical timing relationship between reference SSB and CSI-RS resources, reducing information loss while maintaining communication efficiency.
Solution Approach 2:
The patent changes parameters by focusing on timing-specific parameters rather than complete configuration parameters. The system transforms comprehensive configuration information into condensed timing relationship parameters (offset values, periodicity), preserving essential timing accuracy while improving exchange efficiency.
Data Source
AI summary
A second network device receives, from a first network device, configuration information corresponding to at least one first reference signal and configuration information corresponding to at least one synchronization signal block, where the at least one synchronization signal block is at least one synchronization signal block corresponding to a synchronization signal block frequency; and the second network device determines timing information of the at least one first reference signal based on timing information of a reference synchronization signal block, where the reference synchronization signal block belongs to the at least one synchronization signal block.