Conditional Proactive DRX Measurement for 5G Radio Link Failure
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Solution Overview
Problem
In 5G wireless systems using discontinuous reception (DRX) technology, devices experience service unavailability due to delayed detection of radio problems, leading to potential packet loss and increased latency, which is critical for industrial and video surveillance applications requiring high availability and low latency.
Innovation Solution
Implementing conditional proactive DRX measurements, where user equipment (UE) performs measurements more frequently than allowed by the DRX state based on conditions such as beam or cell measurement parameters, quality of service requirements, and assistance information, allowing for early detection and recovery of radio link failures before the next DRX active time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If DRX technology is used to save energy, then energy consumption is reduced, but service availability and detection speed deteriorate
Solution Approach 1:
The network configures the UE to perform proactive measurements before the actual need arises. By measuring radio link quality in advance during DRX active states and comparing it against configured thresholds, the system detects potential failures before they occur, enabling early recovery actions that maintain service availability while preserving DRX energy savings.
Solution Approach 2:
The system implements a feedback mechanism where measurement results are continuously monitored and compared against configured thresholds. When measurements indicate deteriorating radio conditions, the system triggers recovery procedures. This closed-loop feedback ensures reliable detection and response while maintaining the energy-efficient DRX operation.
2Use of energy by moving object
If DRX technology is used to save energy, then energy consumption is reduced, but detection latency increases
Solution Approach 1:
The UE performs measurements proactively before the next DRX active state by utilizing available active periods in advance. This preliminary measurement approach allows the system to detect radio link failures before they impact service, significantly reducing detection latency while maintaining the energy-saving benefits of DRX by not requiring continuous monitoring.
3Measurement precision
If measurements are performed more frequently than DRX allows, then detection accuracy improves, but energy consumption increases
Solution Approach 1:
The network configures specific measurement opportunities during DRX active states that occur before the actual need for detection. This allows the UE to perform measurements in advance with higher accuracy when energy is already being consumed for DRX operations, without requiring additional continuous measurement energy expenditure.
Solution Approach 2:
The system maintains periodic DRX cycles with configured measurement opportunities within active states. This periodic structure allows the UE to perform measurements at regular intervals defined by DRX parameters, achieving sufficient detection accuracy while consuming energy only during scheduled active periods rather than continuously.
Data Source
AI summary
Systems, methods, apparatuses, and computer program products for conditional proactive discontinuous reception (DRX) measurement are provided. For example, a user equipment (UE) may be in a DRX active state (e.g., where the DRX is used) and configured to proactively measure for radio problems. Another example may relate to a network-controlled implementation where the serving network node (e.g., a base station (BS)) may signal the UE a condition and a configuration for the proactive DRX measurement. Another example may relate to a UE-controlled implementation for improving service unavailability using DRX operation. For example, the serving BS may signal, to the UE, proactive DRX measurement assistance information.