Radio Base Station DRX Parameter Selection for Delay and Power Trade-offs
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Solution Overview
Problem
Current Discontinuous Reception (DRX) schemes in wireless communications networks face challenges in optimizing performance without reducing battery life, as they trade off delay and battery lifetime, and fail to account for varying service types and terminal statuses.
Innovation Solution
A radio base station selects DRX operation parameters based on service type and terminal status, transmitting these parameters to optimize DRX cycles, thereby balancing delay and power consumption effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If DRX operation is implemented to save battery power, then battery life is extended, but network performance and response delay worsen
Solution Approach 1:
The patent dynamically adjusts DRX parameters (drx-OnDurationTimer, drx-InactivityTimer, drx-RetransmissionTimer, drx-ShortCycleTimer, drx-LongCycleTimer) based on terminal status and service type. The base station determines appropriate parameter values and transmits them to the terminal via RRC connection reconfiguration, allowing the system to adapt between power-saving mode and performance-optimized mode in real-time, thus resolving the contradiction between battery life extension and response delay.
2Productivity
If DRX parameters are optimized for delay-sensitive services, then network performance improves, but battery savings are reduced
Solution Approach 1:
The patent applies different DRX parameter configurations tailored to specific service types and terminal statuses. For delay-sensitive services, shorter timers and more frequent monitoring are configured; for power-critical scenarios, longer timers and extended sleep periods are applied. This localized optimization ensures each service receives appropriate performance levels without unnecessarily increasing overall power consumption.
Solution Approach 2:
The base station changes DRX operational parameters based on service type and terminal status determinations. By dynamically modifying timer values and cycle configurations according to current network conditions and service requirements, the system achieves optimal balance between network performance and power consumption for each specific scenario.
3Loss of time
If terminal monitors PDCCH continuously to ensure network performance, then response time is reduced, but battery power is depleted faster
Solution Approach 1:
The patent implements dynamic monitoring behavior where the terminal adjusts its PDCCH monitoring frequency based on received DRX parameters and current service requirements. During active transmission periods, monitoring is frequent to ensure rapid response; during idle periods, monitoring frequency is reduced to conserve battery power, thus dynamically balancing response time and power consumption.
Solution Approach 2:
The patent employs periodic DRX cycles with configured OnDuration and Inactivity periods. The terminal monitors PDCCH during OnDuration windows and enters sleep mode during Inactivity periods, creating a periodic monitoring pattern that reduces average power consumption while maintaining acceptable response times through strategically placed monitoring windows.
Data Source
AI summary
Embodiments herein disclose a method in a radio base station (12) for handling Discontinuous Reception, DRX, operation at a terminal (10) served by the radio base station (12). The radio base station (12) selects a parameter related to DRX operation based on at least one of: a service type of a packet intended for the terminal (10) and a terminal status of the terminal (10). The radio base station then transmits the parameter to the terminal (10).