Quasi-Colocation Configuration for Wireless Signals
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Solution Overview
Problem
Current wireless communication technologies face challenges in efficiently managing quasi-colocation (QCL) relationships for multiple signals within a single symbol, leading to increased computational complexity and resource consumption, particularly for low-complexity UEs.
Innovation Solution
The method involves receiving configuration information indicating multiple QCL relationships for signals within a symbol, selecting an appropriate QCL relationship based on channel properties and rules, and receiving signals according to the selected QCL relationship, thereby reducing the number of relationships to be tracked and conserving computational resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple QCL relationships are configured for multiple signals within a single symbol, then the accuracy of channel property determination is improved, but the computational complexity and resource consumption increase
Solution Approach 1:
The patent segments the QCL relationship management by introducing a default QCL relationship that applies to all signals unless specifically overridden. This divides the complexity into a common baseline (default relationship) and specific exceptions (signal-specific relationships), reducing the overall computational burden while maintaining accuracy where needed.
Solution Approach 2:
The patent implements partial action by allowing UEs to selectively apply QCL relationships based on configuration. Not all signals require individual QCL relationship processing - only those explicitly configured do, while others use the default. This reduces computational complexity from processing all signals individually to processing only the necessary subset.
2Reliability
If multiple QCL relationships are tracked for multiple signals, then the reliability of signal reception is improved, but the resource consumption increases
Solution Approach 1:
The default QCL relationship serves as a universal solution for multiple signals, functioning as a multi-functional baseline that can be applied to any signal not having a specific relationship configured. This eliminates the need for separate processing of each signal's QCL relationship, reducing resource consumption while maintaining reliability through the universal default approach.
3Loss of information
If all QCL relationships are processed for every signal in a symbol, then the completeness of channel property determination is improved, but the processing time increases
Solution Approach 1:
The patent establishes a default QCL relationship in advance that is pre-configured and immediately applicable. This preliminary action eliminates the need for real-time determination of QCL relationships for each signal, as the default is already prepared and can be applied instantly, reducing processing time while ensuring information completeness.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may receive configuration information that indicates, for a plurality of signals configured in a symbol, a plurality of quasi-colocation (QCL) relationships to be used for determining a channel property; select a QCL relationship, from the plurality of QCL relationships, to be used for determining the channel property and the plurality of signals in the symbol; and receive the plurality of signals in accordance with the selected QCL relationship based at least in part on the channel property. Numerous other aspects are provided.