Beam Sets for Mobility Management in 5G Networks
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in mobility management due to the use of generic mobility parameters for beam and cell mobility decisions, leading to unnecessary power consumption and signaling in wireless networks employing beams, particularly in 5G and NR technologies.
Innovation Solution
Implementing beam sets with specific mobility parameters associated with each set, allowing for more accurate event triggers and efficient mobility management by configuring and managing beam sets based on the characteristics of reference beams, enabling UE to detect mobility events and trigger appropriate actions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If generic mobility parameters are used for beam and cell mobility decisions, then mobility management can be performed with simpler configuration, but unnecessary power consumption and signaling occur
Solution Approach 1:
The patent segments mobility parameters into beam-specific parameters and cell-specific parameters. Beam-specific mobility parameters are configured for individual beams within a cell, allowing the UE to selectively apply parameters based on beam conditions. This segmentation enables more precise mobility decisions, reducing unnecessary beam failures and reconfigurations, thereby conserving UE power while maintaining manageable configuration complexity through structured parameter organization.
Solution Approach 2:
The patent applies local quality by using beam-specific mobility parameters that are tailored to individual beam characteristics rather than applying uniform cell-wide parameters. Each beam can have its own set of mobility parameters (e.g., Qrxlevmin, Qqualmin, S_intracellOffset) that reflect local conditions. This allows the system to optimize mobility management for each beam's specific environment, reducing unnecessary power consumption from failed mobility attempts while maintaining configuration manageability through localized optimization.
2Device complexity
If generic mobility parameters are used for beam and cell mobility decisions, then configuration management is simpler, but excessive signaling is generated
Solution Approach 1:
The patent segments mobility parameter configuration into beam-specific and cell-specific components. Beam-specific parameters are configured per beam, enabling the network to provide precise mobility guidance without excessive signaling. The UE can efficiently process this segmented information by applying beam-specific parameters only when relevant, reducing unnecessary signaling exchanges while maintaining configuration manageability through the structured segmentation of parameter types.
Solution Approach 2:
The patent implements local quality by configuring mobility parameters at the beam level rather than uniformly across the entire cell. This allows the network to provide localized mobility parameter information only where needed, reducing overall signaling overhead. The UE benefits from receiving precise, location-specific parameters that reduce unnecessary signaling for mobility events, while the network maintains configuration manageability through organized beam-level parameter settings.
3Measurement precision
If beam sets with specific mobility parameters are implemented, then mobility event detection accuracy is improved, but parameter configuration complexity increases
Solution Approach 1:
The patent segments the mobility parameter space into beam-specific parameters and cell-specific parameters, with clear definitions for each type. Beam-specific parameters (Qrxlevmin, Qqualmin, S_intracellOffset, S_nonintradocellOffset, T320, T321) are organized in a structured manner that improves mobility event detection accuracy while maintaining configuration manageability. The segmentation allows the UE to efficiently process and apply the appropriate parameters for each beam, reducing the cognitive load despite the increased number of parameters.
Solution Approach 2:
The patent applies local quality by providing customized mobility parameters for each beam based on its specific characteristics and conditions. This localized parameter configuration improves mobility event detection accuracy by accounting for beam-specific factors such as signal quality, interference levels, and propagation conditions. The increased configuration complexity is managed through systematic organization of beam-specific parameters, allowing the network to efficiently configure and update parameters on a per-beam basis rather than requiring complete reconfiguration.
Data Source
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AI summary
Certain aspects of the present disclosure provide techniques for using beam sets for mobility management. A BS serving the UE may transmit, to the UE, information regarding one or more beam sets, wherein each of the beam sets comprise one or more reference beams used to transmit a reference signal. The BS may transmit, to the UE, one or more mobility parameters, wherein the mobility parameters are associated with the reference beams and one or more mobility event triggers. The BS may receive, from the UE, an indication of a detected mobility event, the mobility event is detected based, at least in part, on the mobility parameters. The BS may take one or more actions based, at least in part, on the indication. A UE may perform corresponding steps as described herein.