DRX Configuration Selection for Wireless UE Power and Latency
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing discontinuous reception (DRX) configurations, particularly in multi-modal data communication scenarios, where power consumption and synchronization thresholds need to be balanced across different types of traffic and error or latency thresholds.
Innovation Solution
A method and apparatus for wireless communication that allow a user equipment (UE) to select from multiple DRX configurations based on criteria such as buffer status threshold, delay status threshold, power consumption threshold, and active bandwidth part condition, enabling dynamic adaptation to different communication scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a single DRX configuration is used for all traffic types, then device complexity is reduced, but power consumption efficiency deteriorates because the same configuration cannot optimally serve both power-sensitive and latency-sensitive traffic
Solution Approach 1:
The patent segments the single DRX configuration into multiple distinct configurations (first DRX configuration and second DRX configuration), each optimized for specific traffic types. The first configuration serves power-sensitive traffic with extended idle periods, while the second configuration serves latency-sensitive traffic with shorter response times. This segmentation allows the UE to achieve optimal power consumption for different traffic categories without requiring a single complex adaptive configuration.
Solution Approach 2:
The patent implements dynamic DRX configuration selection by introducing a determination module that automatically chooses between the first and second DRX configurations based on real-time traffic characteristics. When power-sensitive traffic is detected, the first configuration is applied; when latency-sensitive traffic is detected, the second configuration is applied. This dynamic switching mechanism enables the system to adapt to varying traffic requirements without increasing device complexity.
2Use of energy by moving object
If DRX configuration is optimized for power consumption, then energy efficiency improves, but synchronization performance deteriorates due to extended idle periods causing delayed response to incoming data
Solution Approach 1:
The patent segments the DRX configuration into two distinct modes: a first DRX configuration optimized for power consumption with extended idle periods, and a second DRX configuration optimized for synchronization performance with shorter idle periods. The determination module segments traffic into power-sensitive and latency-sensitive categories, applying the appropriate configuration to each segment. This ensures that power consumption is minimized for suitable traffic while synchronization performance is maintained for time-critical traffic.
Solution Approach 2:
The patent changes key DRX parameters (such as idle period duration, wake-up frequency, and monitoring intervals) based on traffic characteristics. For power-sensitive traffic, parameters are adjusted to extend idle periods and reduce monitoring frequency, thereby reducing power consumption. For latency-sensitive traffic, parameters are adjusted to shorten idle periods and increase monitoring frequency, thereby maintaining synchronization performance. This parameter adaptation resolves the contradiction between power efficiency and synchronization reliability.
3Adaptability or versatility
If multiple DRX configurations are maintained for different traffic types, then adaptability improves, but device complexity increases due to multiple configuration sets and selection logic
Solution Approach 1:
The patent segments traffic into distinct categories (power-sensitive and latency-sensitive) and maintains separate DRX configurations for each segment. This segmentation approach provides high adaptability to different traffic types while keeping the configuration management simple, as each configuration is dedicated to a specific traffic category with clear selection criteria.
Solution Approach 2:
The determination module implements self-service by automatically identifying traffic characteristics and selecting the appropriate DRX configuration without requiring complex external control or manual intervention. The module monitors incoming traffic, determines its sensitivity characteristics, and autonomously switches between configurations, thereby providing high adaptability while minimizing the complexity burden on the overall system.
4Speed
If DRX configuration responds quickly to traffic changes, then latency performance improves, but power consumption increases due to more frequent monitoring and state transitions
Solution Approach 1:
The patent implements dynamic DRX configuration switching that adapts to traffic characteristics in real-time. For latency-sensitive traffic, the system dynamically transitions to the second DRX configuration with shorter idle periods and faster response times, improving speed without sustained power consumption increase. For power-sensitive traffic, the system dynamically transitions to the first DRX configuration with extended idle periods, reducing power consumption. This dynamic adaptation allows the system to achieve fast response only when necessary, avoiding continuous high power consumption.
Solution Approach 2:
The patent changes DRX parameters (idle period duration, monitoring frequency, state transition timing) based on traffic requirements. When latency-sensitive traffic is detected, parameters are adjusted to reduce idle periods and increase monitoring frequency, improving response speed temporarily. When power-sensitive traffic dominates, parameters are adjusted to extend idle periods and reduce monitoring, lowering power consumption. This parameter modulation resolves the contradiction between response speed and power consumption by applying fast-response settings only when needed.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive configuration information indicating a plurality of discontinuous reception (DRX) configurations. The UE may communicate in accordance with a selected DRX configuration of the plurality of DRX configurations, wherein the selected DRX configuration is associated with one or more criteria comprising at least one of: a buffer status threshold, a delay status threshold, a power consumption threshold, or an active bandwidth part condition of the UE. Numerous other aspects are described.