Non-Integer DRX Cycle Configuration for XR Traffic Alignment
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Solution Overview
Problem
Current 5G NR wireless communication systems face challenges in aligning discontinuous reception (DRX) cycles with the non-integer periodicity of extended reality (XR) traffic arrivals, leading to poor latency and increased power consumption due to unnecessary PDCCH monitoring.
Innovation Solution
Implementing enhanced DRX configurations that allow for non-integer values in DRX cycle configurations, such as the eDRX cycle, which aligns with XR traffic arrivals by using parameters like drx-eLongCycle and drx-eShortCycle, and activating/deactivating these cycles based on specific conditions like timer expiration and MAC CE reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If integer-based DRX cycle configuration is used, then implementation simplicity is maintained, but alignment with non-integer periodicity of XR traffic arrivals deteriorates
Solution Approach 1:
The patent changes the parameter type from integer-only DRX cycle values to non-integer DRX cycle values (e.g., 16.67ms for 60fps XR traffic). This allows the DRX cycle to precisely match the periodicity of XR traffic arrivals, improving alignment precision while maintaining operational simplicity through standardized parameter formats.
2Use of energy by moving object
If traditional DRX configuration is used, then power consumption is reduced through periodic sleep, but latency increases due to misalignment with XR traffic patterns
Solution Approach 1:
The patent introduces dynamic DRX cycle adjustment where the DRX cycle duration is adapted to match the specific traffic pattern requirements. By making the DRX cycle dynamic (e.g., adjusting between different cycle lengths based on traffic conditions), the system maintains low power consumption while reducing latency through better synchronization with XR traffic arrivals.
3Manufacturing precision
If non-integer DRX cycle values are implemented, then alignment with XR traffic periodicity is improved, but configuration complexity increases
Solution Approach 1:
The patent manages configuration complexity by establishing standardized parameter formats for non-integer DRX cycle values. Instead of allowing arbitrary complex configurations, the system uses defined parameter structures (e.g., fractional values with specific denominators corresponding to common XR frame rates), thereby maintaining precision while controlling complexity through standardization.
4Use of energy by moving object
If DRX cycle is extended to match XR traffic patterns, then power consumption decreases, but monitoring frequency is reduced
Solution Approach 1:
The patent implements dynamic adjustment of DRX cycle duration and monitoring parameters based on traffic conditions. When XR traffic patterns are detected, the system dynamically extends the DRX cycle to reduce power consumption while simultaneously adjusting monitoring parameters to maintain efficient PDCCH monitoring, thereby balancing energy savings with monitoring effectiveness.
Data Source
AI summary
Methods and devices for discontinuous reception (DRX) configurations are provided. The method includes receiving a DRX configuration via radio resource control (RRC) signaling, the DRX configuration including a first configuration for configuring a DRX cycle by an integer value; determining whether the DRX configuration includes a second configuration for configuring the DRX cycle by a non-integer value; and in a case that the DRX configuration includes the second configuration, applying the second configuration instead of the first configuration for configuring the DRX cycle.