RRM Stage Control Using Main Radio and Low-Power Receiver
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Solution Overview
Problem
Existing mobile communication systems lack defined procedures for Radio Resource Management (RRM) relaxation and offloading, which are crucial for power savings and efficient operation, particularly in New Radio (NR) systems with Low Power Wake-Up Signals/Wake-Up Receivers (LP-WUS/WUR).
Innovation Solution
A method and apparatus that determine network conditions to control the Main Radio (MR) and Low-power Receiver (LR) based on RRM stages, enabling efficient RRM relaxation and offloading by transitioning between different RRM stages based on signal quality and reception of Low Power Wake-Up Signals (LP-WUS).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the Main Radio (MR) is deactivated or relaxed to save power, then power consumption is reduced, but RRM measurement capability and connectivity reliability deteriorate
Solution Approach 1:
The patent segments the radio receiver into two distinct components: a Low-power Receiver (LR) for basic RRM measurements and a Main Radio (MR) for full communication functionality. The LR handles synchronization signal detection and basic RRM measurements in idle/inactive modes, while the MR remains dormant or partially active. This segmentation allows the system to maintain essential RRM capabilities through the LR while significantly reducing power consumption by keeping the MR deactivated or relaxed during periods when full communication functionality is not required.
2Use of energy by moving object
If the Low-power Receiver (LR) is activated to monitor wake-up signals, then power savings are achieved, but RRM operation definition and control complexity increase
Solution Approach 1:
The patent implements dynamic control mechanisms that allow the system to transition between different operational states based on network conditions and requirements. The network can dynamically configure the LR's RRM measurement capabilities and trigger MR activation when needed. This dynamic approach enables the system to adapt its complexity level - using only the simple LR for basic operations during power-saving modes, and activating the more capable MR when full RRM functionality is required, thus managing complexity on-demand rather than requiring full complexity continuously.
3Use of energy by moving object
If RRM functions are transferred from MR to LR entirely, then power consumption is reduced, but measurement precision and RRM accuracy deteriorate
Solution Approach 1:
The patent introduces the Low-power Receiver (LR) as an intermediary component that bridges the gap between power-saving requirements and accurate RRM measurements. The LR is specifically designed and configured to perform essential RRM measurement functions with adequate precision for idle and inactive modes. When the LR detects conditions requiring higher precision or full RRM functionality, it can trigger the MR to activate and take over measurement tasks. This intermediary approach allows the system to maintain acceptable measurement accuracy through the LR while keeping power consumption low, with the MR serving as a backup for high-precision requirements.
Data Source
AI summary
Various solutions for Radio Resource Management (RRM) relaxation and offloading with respect to an apparatus in mobile communications are described. The apparatus may determine a network condition. The apparatus may determine a specific state of a plurality of states based on the network condition. The specific state may correspond to an RRM stage. The apparatus may control a Main Radio (MR) and a Low-power Receiver (LR) based on the RRM stage.


