Reference Signal Subset Selection for Low-Power Beam Measurement
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Solution Overview
Problem
Measuring all synchronization signal blocks (SSBs) to identify the best beam for communication increases operational complexity and power consumption in user equipment (UE), leading to reduced battery life.
Innovation Solution
Selecting a subset of reference signals based on historic information and operating conditions to reduce the number of measured SSBs, leveraging information from other UEs to maintain signal quality and preserve battery life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all synchronization signal blocks (SSBs) are measured to identify the best beam, then communication quality is improved, but operational complexity and power consumption increase
Solution Approach 1:
The patent segments the full set of reference signals into multiple subsets based on historic information from other UEs. Each subset contains a portion of the reference signals, allowing the UE to measure only one subset instead of all reference signals. This segmentation maintains communication quality by selecting representative subsets while reducing power consumption and complexity.
Solution Approach 2:
The patent performs preliminary actions by collecting and analyzing historic information from other UEs before the current UE performs measurements. The network node uses this historic information to pre-select reference signal subsets that are likely to contain the best beam, allowing the UE to skip measuring all reference signals and directly measure the pre-selected subset, thereby reducing power consumption while maintaining measurement accuracy.
2Reliability
If all synchronization signal blocks (SSBs) are measured to identify the best beam, then communication quality is improved, but device complexity increases
Solution Approach 1:
The patent divides the complete reference signal measurement task into smaller subset measurements. By segmenting the reference signals into multiple subsets based on historic information, the UE only needs to process and measure one subset instead of all reference signals, significantly reducing operational complexity while maintaining the ability to identify the best beam for communication.
Solution Approach 2:
The patent uses historic information from other UEs to create representative copies or subsets of reference signals. Instead of requiring each UE to independently analyze all reference signals, the system creates simplified copies (subsets) based on collective historic data, reducing the computational burden and operational complexity for individual UEs while preserving measurement effectiveness.
3Use of energy by moving object
If a subset of reference signals is measured based on historic information, then power consumption is reduced, but measurement precision may be affected
Solution Approach 1:
The patent performs preliminary analysis using historic information from multiple UEs to pre-select reference signal subsets that are most likely to contain the best beam. This preliminary action ensures that the reduced subset measurements still capture the necessary information for accurate beam identification, maintaining measurement precision while reducing power consumption.
Solution Approach 2:
The system incorporates feedback mechanisms where historic measurement results from other UEs are used to inform the subset selection process. This feedback loop ensures that subsets are chosen based on actual measurement data rather than random selection, maintaining measurement precision even when measuring fewer reference signals.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive reference signal information that indicates one or more reference signal subsets that are based at least in part on a set of reference signals, each reference signal subset of the one or more reference signal subsets being based at least in part on historic information associated with the set of reference signals. The UE may select a reference signal subset from the one or more reference signal subsets based at least in part on an operating condition of the UE. The UE may perform a measurement procedure based at least in part on the reference signal subset. Numerous other aspects are described.