Beam Management DRX Timing for High-Mobility Alignment
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Solution Overview
Problem
Existing wireless communication systems face challenges in managing beams effectively during high mobility scenarios, leading to increased latency and connection loss due to frequent handovers and misalignment of beams in high-speed applications like trains or tunnels.
Innovation Solution
Adapting the discontinuous reception (DRX) cycle to align with Doppler shifts and angular variations by configuring on durations of the DRX cycle to match the UE's mobility state, allowing for improved beam management through dynamic DRX configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beam management is performed using conventional methods in high mobility scenarios, then the system can maintain basic communication functionality, but beam misalignment and connection loss occur due to Doppler shifts and angular variations
Solution Approach 1:
The patent applies dynamics by making the DRX configuration adaptive and variable based on UE mobility state. The base station determines whether the UE is in a high mobility state and dynamically adjusts the DRX on-duration timing accordingly. This dynamic adaptation allows the system to respond to changing channel conditions caused by Doppler shifts and angular variations, maintaining beam alignment reliability in high mobility scenarios where static configurations would fail.
Solution Approach 2:
The patent changes the timing parameters of the DRX cycle based on detected mobility state. When high mobility is detected, the system modifies the on-duration timing to account for beam direction changes. This parameter adjustment compensates for the effects of Doppler shifts and angular variations, ensuring that beam management operations occur at appropriate intervals to maintain connection reliability without requiring continuous monitoring.
2Reliability
If continuous beam monitoring is performed to maintain alignment in high mobility scenarios, then beam alignment is improved, but latency increases due to frequent handovers and continuous monitoring requirements
Solution Approach 1:
The patent implements periodic beam monitoring through the DRX mechanism, where the UE wakes up at scheduled on-duration intervals to perform beam alignment and communication. In high mobility states, the periodic timing is adjusted to account for faster beam direction changes. This periodic approach maintains beam alignment reliability while avoiding the continuous monitoring overhead that would cause excessive latency, finding an optimal balance between alignment maintenance and communication efficiency.
3Use of energy by moving object
If DRX cycle is configured for power saving, then energy efficiency is improved, but beam management performance deteriorates in high mobility scenarios due to insufficient monitoring frequency
Solution Approach 1:
The patent makes the DRX configuration dynamic based on mobility state detection. When the base station determines the UE is in a high mobility state, it adjusts the DRX on-duration timing to provide more frequent monitoring opportunities. This dynamic adaptation allows the system to maintain power-efficient operation during low mobility while ensuring adequate beam management performance during high mobility, resolving the contradiction between energy saving and beam management reliability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances beam alignment and reduces latency by aligning DRX cycle on durations with Doppler shifts and angular variations, ensuring continuous communication in high mobility scenarios.
Implementation Method 1
Adapting the discontinuous reception (DRX) cycle to align with Doppler shifts and angular variations by configuring on durations of the DRX cycle to match the UE's mobility state
Implementation Method 2
Adapting the discontinuous reception (DRX) cycle to align with Doppler shifts and angular variations by configuring on durations of the DRX cycle to match the UE's mobility state
Data Source
AI summary
Certain aspects of the present disclosure provide techniques for high speed beam management. A method that may be performed by a user equipment (UE) includes receiving beamformed signals from at least one base station (BS); determining that the UE is in a high mobility state and one or more parameters associated with the high mobility state, based on the received signals; transmitting at least one of the one or more parameters to the at least one BS; and communicating with the at least one BS based on the one or more parameters.