Wireless Node Reference Signal Measurement for Energy Saving
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Solution Overview
Problem
The existing assumption of constant transmit power for Synchronization signal/Physical broadcast channel (SS/PBCH) Blocks in wireless communication systems is no longer valid for energy saving, and this inconsistency can lead to unfairness and false alarms in link failure detection, affecting service quality and cell handover processes.
Innovation Solution
A method is introduced where two types of measurements are performed on reference signal resource groups with different Energy per Resource Element (EPRE) settings, allowing for variable EPRE in one group to support Legacy UE and ensure radio link quality assessment without assuming constant power, thereby reducing power overhead and maintaining service quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If constant transmit power is assumed for SSB blocks, then measurement simplicity is maintained, but energy saving capability and measurement accuracy are compromised
Solution Approach 1:
The patent divides reference signal resources into two distinct groups: a first group with constant EPRE for Legacy UE compatibility and a second group with variable EPRE for energy saving measurements. This segmentation allows each group to serve its specific purpose independently, resolving the contradiction between simplicity and energy saving capability.
Solution Approach 2:
Different EPRE characteristics are applied to different reference signal groups based on their specific functions. The first group uses constant EPRE for compatibility with Legacy UE, while the second group uses variable EPRE to reflect actual transmit power for energy saving assessments, allowing each local region to have optimized properties.
2Reliability
If variable EPRE is used for all reference signals, then energy saving accuracy is improved, but compatibility with Legacy UE and measurement fairness are compromised
Solution Approach 1:
The patent segments reference signals into two groups with different EPRE characteristics. The first group maintains constant EPRE for Legacy UE compatibility, while the second group implements variable EPRE for accurate energy saving measurements, ensuring both compatibility and accuracy coexist.
Solution Approach 2:
Each reference signal group is assigned appropriate EPRE characteristics tailored to its target audience: constant EPRE for Legacy UE and variable EPRE for energy saving functionality, allowing the system to adapt to different requirements simultaneously.
3Device complexity
If single measurement type is used, then device complexity is reduced, but measurement accuracy for different purposes is compromised
Solution Approach 1:
The patent segments measurements into two types: first-type measurements using constant EPRE for cell search and handover, and second-type measurements using variable EPRE for energy saving assessments. This segmentation enables accurate measurements for different purposes while maintaining manageable complexity through structured organization.
Solution Approach 2:
The patent creates a unified measurement framework that serves multiple functions through two coordinated measurement types. The first-type measurements handle traditional cell search and handover, while the second-type measurements enable energy saving assessments, making the system multi-functional without proportionally increasing complexity.
4Loss of energy
If constant EPRE is assumed, then power overhead is reduced, but link failure detection accuracy and service quality are compromised
Solution Approach 1:
The patent segments reference signals into two groups with different EPRE characteristics. The second group uses variable EPRE that reflects actual transmit power, enabling accurate link failure detection and service quality assessment while the first group maintains constant EPRE for compatibility, balancing accuracy and overhead.
Solution Approach 2:
The patent enables feedback mechanisms using second-type measurements with variable EPRE to accurately assess radio link quality and trigger appropriate responses. This feedback capability improves link failure detection accuracy while the structured approach to measurement types manages power overhead.
Data Source
AI summary
The present application discloses a method and a device in a node for wireless communications. A first receiver performs a first-type measurement on a first reference signal resource group of a first serving cell; and a second-type measurement on a second reference signal resource group of the first serving cell, where each of the first reference signal resource group and the second reference signal resource group respectively comprises at least one reference signal resource, of the at least one reference signal resource each reference signal resource being indicated by an SSB-Index. This application reduces the complexity of system implementation and enhances the performance.