Connected-Mode DRX Slot Prioritization for Lower UE Power
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in power consumption and resource utilization due to semi-static DRX configurations, particularly in scenarios requiring frequent adjustments, leading to increased latency and network congestion.
Innovation Solution
Implementing dynamic signaling for adjusting DRX parameters, such as timer adjustments and slot prioritization, to optimize power consumption and resource allocation, allowing for more efficient network operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If semi-static DRX configurations are used, then device complexity is reduced and ease of operation is improved, but power consumption increases and resource utilization decreases
Solution Approach 1:
The patent implements dynamic DRX configuration where the network can adjust DRX parameters (such as drx-OnDurationTimer, drx-InactivityTimer, drx-SlotOffset) in real-time based on current network conditions and traffic patterns. This allows the system to transition from static to adaptive power saving modes, optimizing power consumption while maintaining manageable complexity through standardized adjustment procedures.
Solution Approach 2:
The patent changes DRX parameters dynamically by receiving network indications that adjust timer values and slot configurations. The UE modifies its DRX behavior by changing parameters such as on-duration timer lengths, inactivity timer thresholds, and slot offset values based on network directives, enabling flexible power optimization without requiring complex local decision-making algorithms.
2Loss of time
If semi-static DRX configurations are used, then configuration complexity is reduced, but latency increases and network efficiency decreases
Solution Approach 1:
The patent enables dynamic adjustment of DRX timing parameters including drx-OnDurationTimer and drx-SlotOffset to adapt to varying traffic conditions. This dynamic configuration allows the system to reduce latency during high-traffic periods by shortening wake intervals while maintaining simpler configuration management through network-controlled adjustments rather than complex UE-side algorithms.
Solution Approach 2:
The patent modifies DRX timing parameters dynamically based on network conditions. The network sends indications to change timer values and slot configurations, allowing the UE to adjust its wake-up schedule and monitoring behavior to reduce latency when needed while keeping the configuration mechanism itself relatively simple and standardized.
3Reliability
If DRX active time is extended to ensure data transmission, then reliability is improved, but power consumption increases
Solution Approach 1:
The patent dynamically adjusts DRX timer parameters such as drx-InactivityTimer and drx-OnDurationTimer based on network conditions and traffic patterns. This allows the system to extend active time only when necessary for reliable data transmission while minimizing power consumption during low-activity periods, achieving a balance between reliability and energy efficiency through parameter optimization.
Solution Approach 2:
The patent implements periodic DRX cycles with dynamically adjustable parameters. The UE alternates between active monitoring periods and sleep periods, with the active period duration and frequency adjusted based on network directives. This periodic structure ensures reliable data transmission during active periods while minimizing power consumption during sleep periods, with the ability to adapt the cycle characteristics to current needs.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. Some aspects more specifically relate to defining a first set of one or more slots of a discontinuous reception (DRX) on duration (or active time) with a first priority level. A user equipment (UE) may monitor a physical downlink control channel (PDCCH) in the first set of one or more slots. A second set of one or more slots of the DRX on duration may have a second priority level. The UE may monitor the PDCCH in the second set of one or more slots only if a PDCCH is received in the first set of one or more slots. In some aspects, a network node may adjust a connected-mode DRX related timer based on an indication via radio resource control signaling, medium access control signaling, or downlink control information.