Differential EPRE Reporting for Reference Signal Optimization
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in reporting energy values for reference signal tones, leading to high communication overhead and suboptimal custom reference signal patterns due to channel selectivity, particularly in 5G NR technology.
Innovation Solution
Implementing a method where a receiving device determines an updated custom reference signal pattern using machine learning techniques and communicates relative energy per resource element values to reduce overhead, allowing both devices to synchronize and optimize RS-based measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If all EPRE values are communicated as absolute values, then the transmitting device can accurately determine the RS pattern, but the communication overhead increases significantly
Solution Approach 1:
The patent combines multiple EPRE values into a single differential value that represents the relationship between them. Instead of transmitting each EPRE value separately, the system transmits a differential indicator that allows the receiving device to derive all necessary EPRE values, thereby reducing communication overhead while maintaining measurement precision.
Solution Approach 2:
The patent changes the parameter representation from absolute EPRE values to differential EPRE values. By transmitting the difference between EPRE values rather than the absolute values themselves, the system reduces the amount of data that needs to be communicated while preserving the ability to accurately determine the RS pattern.
2Adaptability or versatility
If standard RS patterns are used, then the system maintains compatibility with existing protocols, but the measurements are suboptimal due to channel selectivity
Solution Approach 1:
The patent introduces dynamic RS patterns that can be adapted to specific channel conditions while maintaining compatibility with existing protocols. The system allows the RS pattern to be customized based on channel selectivity characteristics, enabling optimal measurements without sacrificing protocol compatibility through the use of differential reporting mechanisms.
3Measurement precision
If custom RS patterns are determined using machine learning, then measurement accuracy improves, but both devices must synchronize on the custom pattern
Solution Approach 1:
The patent implements a feedback mechanism where the receiving device determines the custom RS pattern based on channel measurements and communicates the differential EPRE values back to the transmitting device. This feedback loop enables both devices to synchronize on the optimal RS pattern while maintaining manageable complexity through the use of differential reporting.
Data Source
AI summary
A receiving device may be either a UE or a base station. The receiving device may receive, from a transmitting device, communication based on a current reference signal (RS) pattern. The receiving device may determine, based on the received communication, at least one updated RS pattern for at least one resource block (RB). The at least one updated RS pattern may include at least one updated energy per resource element (EPRE) value for one or more RS tones. Further, the receiving device may transmit, to the transmitting device, a report of the at least one updated RS pattern. The report may correspond to at least one of an absolute value or a relative value of the at least one updated EPRE value for the one or more RS tones.