Dynamic CDRX Timing Control for UE-Network Synchronization
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Solution Overview
Problem
Mobile network operators face challenges in optimizing wireless communications with advanced User Equipment (UE) devices due to complex transmission and reception behaviors that are difficult to adjust via base stations, leading to inefficient power consumption and synchronization issues in connected-mode discontinuous reception (CDRX) cycles.
Innovation Solution
Implementing a system that dynamically controls long CDRX cycles at UE devices by adjusting CDRX timing parameters based on network traffic conditions, using CDRX manager and CDRX rules database to synchronize with access station signaling, thereby improving power efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If CDRX cycles are extended to save battery power, then power efficiency is improved, but synchronization with network signaling deteriorates
Solution Approach 1:
The patent implements dynamic CDRX cycle adjustment where the network can modify CDRX parameters (cycle length, offset values) based on current traffic conditions and UE behavior. This allows the system to transition from static to adaptive CDRX configurations, optimizing the balance between power savings and synchronization reliability according to real-time network conditions.
Solution Approach 2:
The system changes CDRX parameters dynamically based on observed UE transmission/reception patterns and network traffic conditions. By adjusting parameters such as drx-CycleLength, drx-HARQ-RTT-Timer, and drx-Offset, the system optimizes both power efficiency and synchronization performance without requiring complex hardware modifications.
2Reliability
If CDRX timing is adjusted to synchronize with network signaling, then synchronization reliability is improved, but power efficiency deteriorates
Solution Approach 1:
The system employs feedback mechanisms where the network monitors UE uplink transmission timing, reception patterns, and traffic behavior to dynamically adjust CDRX parameters. This closed-loop approach ensures that synchronization is maintained while maximizing power savings, as the network adapts CDRX configurations based on actual UE activity patterns rather than using fixed conservative settings.
3Adaptability or versatility
If base stations use wide range of technologies to manage UEs, then network functionality is improved, but difficulty in identifying and adjusting UE settings worsens
Solution Approach 1:
The patent implements a universal CDRX management framework that works across multiple base station technologies and UE types through standardized parameter adjustments. The system uses a unified approach based on RRC signaling and standardized CDRX parameter sets that can be applied regardless of the specific base station technology or UE implementation, simplifying management while maintaining compatibility with diverse network configurations.
Data Source
AI summary
A device may include a processor. The processor may be configured to receive parameters that are associated with a User Equipment device (UE); select, based on the parameters, a connected-mode discontinuous reception (CDRX) timing parameters; and determine a traffic load at the device. When the traffic load at the device is greater than a threshold, the processor may send the CDRX timing parameters to the UE.