Zero Power Slots for Rx Frequency Dependence Measurement
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Solution Overview
Problem
Current 5G NR communication systems face challenges in accurately measuring and reporting noise energy and frequency dependence, particularly in separating transmit and receive signal degradations, which affects signal quality and communication efficiency.
Innovation Solution
The implementation of zero power slots allows user equipment (UE) to measure noise energy during transmission gaps, enabling the detection and reporting of receive signal frequency dependence, which can be used to separate and compensate for transmit signal degradations, thereby improving signal quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If zero power slots are introduced for noise energy measurement, then measurement precision of noise energy and frequency dependence is improved, but device complexity increases due to additional measurement and reporting procedures
Solution Approach 1:
The transmission timeline is segmented into different slot types (zero power slots and non-zero power slots) to separate the measurement of noise energy from the measurement of combined signal and noise. This segmentation allows independent measurement of Rx frequency dependence in zero power slots and combined frequency dependence in non-zero power slots, improving measurement precision while managing complexity through structured time division.
Solution Approach 2:
Zero power slots are configured in advance as transmission gaps where the network entity does not transmit signals, allowing the UE to perform preliminary noise energy measurements before actual communication occurs. This preliminary action enables the UE to measure noise and Rx frequency dependence independently, improving measurement precision without interfering with normal communication operations.
2Reliability
If zero power slots are allocated for Rx signal measurement, then reliability of frequency dependence separation is improved, but loss of time occurs due to transmission gaps
Solution Approach 1:
The transmission timeline is segmented into zero power slots and non-zero power slots, allowing the UE to measure noise energy (for Rx frequency dependence) in zero power slots and combined frequency dependence in non-zero power slots. This segmentation enables reliable separation of Tx and Rx frequency dependences while minimizing time loss through efficient time division.
Solution Approach 2:
The UE reports measured noise energy and frequency dependence information back to the network entity, which uses this feedback to compensate for Rx frequency dependence in subsequent transmissions. This feedback mechanism improves reliability of frequency dependence separation by enabling continuous monitoring and adjustment, while the time loss is mitigated through efficient utilization of measurement and reporting intervals.
3Manufacturing precision
If noise energy measurement in zero power slots is performed, then manufacturing precision of signal quality compensation is improved, but use of energy increases due to additional detection operations
Solution Approach 1:
The UE performs noise energy measurement in zero power slots as a preliminary action before actual communication occurs. During these zero power slots, the UE detects noise energy and measures Rx frequency dependence without the network transmitting signals, reducing the energy required for detection compared to performing measurements during active transmission periods. This preliminary measurement enables precise signal quality compensation while minimizing energy consumption.
Solution Approach 2:
The measurement function is extracted from the active communication process and performed separately in zero power slots. By taking out the noise energy measurement from the signal transmission process, the UE can perform detection operations during periods when no signal transmission occurs, reducing the energy consumption associated with simultaneous signal processing and measurement while maintaining manufacturing precision of compensation.
Data Source
AI summary
This disclosure provides systems, devices, apparatus, and methods, including computer programs encoded on storage media, for measurement and reporting techniques based on zero power slots. A UE may receive an allocation of one or more ZP slots from a network entity. The one or more ZP slots may correspond to one or more transmission gaps associated with the network entity. The UE may detect noise energy in the one or more ZP slots corresponding to the one or more transmission gaps associated with the network entity and measure the noise energy detected in the one or more ZP slots. The measured noise energy in the one or more ZP slots may correspond to a frequency dependence of an Rx signal at the UE.