Low-Power Radio Layer for 5G Idle Mode Energy Reduction
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Solution Overview
Problem
Current wireless communication systems, particularly in 5G NR, face challenges in energy efficiency during idle modes due to high power consumption from maintaining synchronization and performing measurements, which is not optimized for low-data transmission scenarios.
Innovation Solution
The introduction of a low-power radio layer (LPRL) for essential operations like synchronization and measurement, coupled with a high-performance radio layer (HPRL) for data-intensive tasks, allows for dynamic power management by using simpler signal structures and fewer antenna elements, reducing energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single high-performance radio layer is used for all operations, then communication performance and reliability are maintained, but energy consumption increases significantly during idle modes
Solution Approach 1:
The radio layer is segmented into two distinct layers: a low-power radio layer for idle mode operations and a high-performance radio layer for active data transmission. This segmentation allows the system to use simpler, lower-power signal structures during idle periods while maintaining the capability to switch to high-performance mode when needed, thereby resolving the contradiction between reliability and energy consumption.
2Measurement precision
If complex signal structures and multiple antenna elements are used continuously, then synchronization precision and measurement accuracy are improved, but power consumption increases
Solution Approach 1:
The system dynamically adjusts the radio layer configuration based on operational state. During idle modes, the low-power radio layer with simpler signal structures is activated, reducing power consumption. When data transmission is required, the system transitions to the high-performance radio layer with complex signal structures and multiple antenna elements, ensuring synchronization precision and measurement accuracy are maintained only when necessary.
3Reliability
If the radio layer maintains full functionality during idle modes, then connectivity is ensured, but energy efficiency deteriorates
Solution Approach 1:
The low-power radio layer extracts and isolates the essential functionality needed for idle mode operations, such as basic synchronization and measurement, separating these from the full high-performance radio layer functionality. This extraction allows the system to maintain necessary connectivity while eliminating unnecessary complex operations that would consume excessive energy during idle periods.
Data Source
AI summary
In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a user equipment (UE). The UE receives, from a base station, a low-power radio layer (LPRL) synchronization signal on an LPRL for synchronization and measurement. The UE communicates, on the LPRL, wake-up information or paging information with the base station for subsequent communications on a high-performance radio layer (HPRL). The UE detects, on the HPRL, a signal transmitted from the base station.