Autonomous Cell Discontinuous Operation Detection for Wireless UEs
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Solution Overview
Problem
In wireless communications systems, user equipment (UE) may fail to detect activation or deactivation messages for cell discontinuous operations such as cell DTX/DRX, leading to inefficient energy utilization and poor spectral efficiency due to incorrect operation mode assumptions.
Innovation Solution
UEs are equipped with mechanisms to autonomously detect failures in activation/deactivation messages by receiving control messages that differentiate between active and non-active periods of cell discontinuous operations, using measurement thresholds, reference signal sequences, and counters to recover from detection failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UEs autonomously detect cell discontinuous operation using measurement thresholds and reference signal sequences, then detection reliability is improved, but device complexity increases
Solution Approach 1:
The network pre-configures measurement thresholds, reference signal sequences, and counter parameters in control messages before the UE performs autonomous detection. This preliminary configuration enables the UE to detect cell discontinuous operation states without requiring complex real-time processing or continuous network signaling, thereby improving detection reliability while managing device complexity.
Solution Approach 2:
The UE autonomously monitors reference signals, performs measurements against configured thresholds, and independently determines whether cell discontinuous operation is activated or deactivated. This self-service approach eliminates the need for explicit activation/deactivation messages from the network, improving reliability in message delivery while the UE handles the detection complexity internally.
2Measurement precision
If UEs continuously monitor for activation and deactivation messages, then detection accuracy is improved, but energy consumption increases
Solution Approach 1:
The UE monitors reference signals at periodic intervals according to configured monitoring occasions rather than continuously. The network configures specific monitoring periods and reference signal sequences that enable the UE to accurately detect cell discontinuous operation states while reducing power consumption by entering low-power states between monitoring occasions.
Solution Approach 2:
The system uses configurable measurement thresholds and reference signal parameters that allow the UE to adjust its monitoring sensitivity. By optimizing these parameters, the UE can achieve adequate detection accuracy with less frequent monitoring, thereby reducing energy consumption while maintaining reliable detection of activation and deactivation states.
3Reliability
If the network sends explicit activation and deactivation messages, then communication reliability is improved, but latency increases
Solution Approach 1:
The patent extracts the essential detection functionality from the network's message signaling and transfers it to the UE's autonomous measurement and determination process. By removing the requirement for explicit activation/deactivation messages, the system eliminates the associated signaling latency while maintaining reliability through the UE's independent verification using pre-configured reference signals and thresholds.
Solution Approach 2:
The UE skips the waiting period for explicit network messages by immediately performing autonomous detection using pre-configured parameters. This allows the UE to rapidly determine cell discontinuous operation states without being constrained by network message timing, thereby reducing latency while maintaining detection reliability through continuous reference signal monitoring.
4Productivity
If UEs use autonomous detection mechanisms with multiple measurement thresholds, then spectral efficiency is improved, but device complexity increases
Solution Approach 1:
The network pre-configures multiple measurement thresholds, reference signal sequences, and counter parameters in control messages before the UE performs autonomous detection. This preliminary configuration enables the UE to efficiently evaluate cell discontinuous operation states using simple comparisons against pre-stored thresholds, improving spectral efficiency by eliminating message signaling while managing device complexity through pre-processing.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive one or more control messages that include information associated with whether a cell discontinuous operation is activated or deactivated. The cell discontinuous operation may be associated with a cycle of active periods and non-active periods, and the information may differentiate a first communication within a set of active periods from a second communication outside the set of active periods. The information may include thresholds, signaling configurations, resource allocations, or other information associated with the first communication and the second communication. The UE may indicate a failure to receive an activation message or a deactivation message associated with the cell discontinuous operation based at least in part on whether the cell discontinuous operation is activated or deactivated.