CDRX Carrier Monitoring and Cycle Skipping for UE Power Savings
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing CDRX configurations in wireless communications systems do not consider additional radio access technologies, UE parameters, or power levels, leading to suboptimal power consumption, and carrier aggregation results in unnecessary power usage due to monitoring all component carriers for signaling.
Innovation Solution
UEs can indicate a preferred CDRX configuration or request to skip certain cycles, and network entities can transmit wake-up signals per component carrier to optimize power savings by reducing unnecessary monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UEs monitor all component carriers for signaling in carrier aggregation, then communication reliability is improved, but power consumption increases
Solution Approach 1:
The patent segments the monitoring task by component carrier, allowing the UE to selectively monitor only those component carriers that have pending signaling or data transmissions. This segmentation enables the UE to divide the carrier aggregation into monitored and non-monitored subsets, reducing overall power consumption while maintaining reliability for active carriers.
Solution Approach 2:
The patent implements periodic CDRX cycles where the UE alternates between active monitoring periods and sleep periods. During each CDRX cycle, the UE monitors component carriers periodically rather than continuously, allowing the radio frequency circuit to enter low-power states between monitoring intervals while still detecting signaling when needed.
2Use of energy by moving object
If UEs use traditional CDRX configurations, then power savings are achieved, but additional radio access technologies and UE parameters are not considered leading to suboptimal power consumption
Solution Approach 1:
The patent makes the CDRX configuration dynamic by allowing the network to individually configure each component carrier with specific CDRX parameters. The network can adjust the CDRX cycle lengths, active durations, and skip patterns dynamically based on current UE power levels, traffic patterns, and radio access technology requirements, enabling adaptive power optimization.
Solution Approach 2:
The patent changes multiple CDRX parameters including cycle length, active duration, and skip count to optimize power consumption. The network can modify these parameters on a per-component-carrier basis and adjust them over time based on UE feedback and network conditions, allowing the system to adapt to varying power requirements and traffic demands.
3Measurement precision
If UEs monitor all component carriers continuously, then signaling detection accuracy is improved, but unnecessary power usage occurs
Solution Approach 1:
The patent applies preliminary action by having the network indicate in advance which component carriers require monitoring during upcoming CDRX active periods. The network can provide ahead-of-time information about scheduled transmissions or signaling, allowing the UE to prepare for monitoring only when necessary, thereby avoiding unnecessary power consumption while maintaining detection accuracy.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a control message that indicates a first a first configuration for multiple connected mode discontinuous reception (CDRX) cycles of the UE. In some cases, the UE may transmit a response message that indicates a preferred configuration for the multiple CDRX cycles or indicates a request to skip one or more first CDRX cycles of the multiple CDRX cycles. As such, the UE may monitor at least a subset of the multiple CDRX cycles in accordance with the response message. In some other cases, the UE may receive, prior to an active duration of a second CDRX cycle of the multiple CDRX cycles, a wake up signal that indicates one or more carriers, of multiple carriers configured for the UE, for which the UE is to monitor for control information within an active duration.