Multi-TRP Channel State Measurement With Dynamic TCI Resources
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Solution Overview
Problem
Existing wireless communication systems face challenges in accurately determining and measuring reference signals in multi-transmission reception point scenarios due to interference and inflexible resource configuration, which affects beam tracking and channel state indication.
Innovation Solution
The method involves configuring transmission configuration indication (TCI) codepoints in physical downlink control channels to determine measurement reference signals, associating them with channel and interference measurement resources, and using predefined TCI states to reduce interference and enhance measurement accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If reference signals are measured in multi-TRP scenarios with fixed resource configuration, then measurement can be performed, but measurement accuracy deteriorates due to interference and inability to adapt to changing conditions
Solution Approach 1:
The patent applies dynamics by enabling dynamic adaptation of reference signal measurement resources based on TCI codepoint indications. The measurement resources are no longer fixed but can be dynamically selected and configured according to the indicated TCI states, allowing the system to adapt to changing interference conditions and beam configurations in real-time.
Solution Approach 2:
The patent changes the parameter of resource configuration from static to dynamic. By using TCI codepoint information to determine measurement reference signal resources, the system can change the measurement parameters (time, frequency, spatial resources) based on the indicated transmission configuration, thereby improving both accuracy and adaptability.
2Productivity
If complex processing is performed for monitoring control channels and processing data encoding/decoding, then transmission performance improves, but device complexity increases
Solution Approach 1:
The patent introduces TCI codepoint information as an intermediary that simplifies the relationship between complex beam configurations and the actual measurement process. Instead of directly processing complex TCI state information, the system uses the codepoint as a mediator to select pre-configured measurement resources, reducing processing complexity while maintaining high transmission performance.
Solution Approach 2:
The patent applies preliminary action by pre-configuring measurement reference signal resources associated with different TCI codepoints. This preliminary configuration allows the system to avoid complex real-time processing during measurement, as the resources are already prepared and can be directly selected based on the TCI codepoint indication.
3Measurement precision
If multiple TCI states are configured for beam tracking, then beam selection accuracy improves, but measurement resource configuration complexity increases
Solution Approach 1:
The patent segments the TCI state configuration into discrete codepoints, each associated with specific measurement reference signal resources. This segmentation allows the system to manage multiple TCI states in an organized manner, where each codepoint represents a distinct beam configuration with its own pre-configured measurement resources, reducing overall configuration complexity.
Solution Approach 2:
The patent makes the TCI codepoint structure universal by using the same codepoint-based mechanism for both beam tracking and measurement resource selection. The same TCI codepoint information serves multiple functions: indicating the active beam configuration and determining the measurement reference signal resources, thereby reducing the need for separate configuration mechanisms.
Data Source
AI summary
Methods, apparatuses, and systems for determining the measurement of reference signals in a wireless system are described. In one aspect, a wireless communication method is disclosed. The method includes determining measurement reference signal information based on transmission configuration indication (TCI) codepoint information, wherein the TCI codepoint information is indicated in a TCI field in a physical downlink control channel (PDCCH), wherein the reference signal measurement information includes a TCI codepoint index. The method further includes determining a measurement reference signal resource in a measurement reference signal resource set according the TCI codepoint index, and measuring the reference signal.