DRX Configuration for Beam Management Synchronization
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Solution Overview
Problem
Misalignment between discontinuous reception (DRX) operation and beam procedures in wireless communications leads to unsuccessful beam procedures, affecting the efficiency of wireless communications.
Innovation Solution
A system where a base station transmits radio resource control messages with parameters associated with DRX operation and beam procedures, allowing the wireless device to monitor the downlink control channel based on DRX parameters and timers, ensuring synchronization for successful data packet reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If DRX operation is used to reduce power consumption, then power saving is improved, but beam procedure alignment deteriorates
Solution Approach 1:
The patent makes the DRX configuration dynamic by allowing different DRX parameters (onDurationTimer, drx-InactivityTimer, drx-RetransmissionTimer, etc.) to be adjusted based on the beam procedure state. The MAC entity dynamically switches between DRX active time and beam procedure execution time, optimizing both power consumption and beam procedure reliability according to real-time conditions.
Solution Approach 2:
The patent changes DRX parameters based on beam procedure requirements. When beam procedures are active, the system adjusts DRX timing parameters to ensure the MAC entity remains awake during critical beam management operations, while maintaining power-saving DRX operation during stable periods. This parameter adaptation resolves the contradiction between power saving and beam procedure success.
2Reliability
If DRX active time monitoring is enforced, then beam procedure reliability is improved, but power consumption increases
Solution Approach 1:
The patent applies preliminary action by configuring DRX parameters in advance based on expected beam procedure timing. The system pre-adjusts the DRX active time to coincide with scheduled beam management operations, so the MAC entity is already awake and ready when beam procedures need to execute, avoiding the need for continuous monitoring while ensuring reliability.
Solution Approach 2:
The patent implements periodic DRX cycling synchronized with beam procedure periodicity. Instead of continuous monitoring, the MAC entity enters periodic DRX cycles where it wakes up at calculated intervals that align with beam procedure schedules, maintaining reliability through periodic presence while dramatically reducing overall power consumption compared to continuous monitoring.
3Measurement precision
If continuous monitoring is performed, then synchronization accuracy is improved, but device complexity increases
Solution Approach 1:
The patent implements self-service by enabling the MAC entity to autonomously determine its own DRX active time based on configured parameters and timers. The device independently calculates when it should be awake for beam procedures without requiring complex network coordination or continuous monitoring commands, reducing device complexity while maintaining synchronization accuracy through self-managed DRX operation.
Data Source
AI summary
Systems, apparatuses, and methods are described for wireless communications. A base station may transmit, to a wireless device, one or more radio resource control messages comprising parameters for a discontinuous reception operation. The wireless device may monitor, based on one or more of the parameters, a downlink control channel for downlink control information (DCI). After detecting the DCI, the wireless device may communicate one or more packets.