Dual Connectivity Beamwidth-Based Addition Control
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Solution Overview
Problem
In dual-connectivity configurations, determining when to establish a second-RAT connection with a secondary node (SN) for a user equipment (UE) is challenging, particularly in scenarios where the UE's coverage strength from the secondary node is uncertain, leading to inefficiencies in configuring optimal connectivity.
Innovation Solution
The mechanism selects between 'blind-addition' and 'threshold-based-addition' processes for establishing a secondary connection based on the beamwidth of the secondary node's antenna, with blind-addition favored for narrower beamwidths and threshold-based addition for wider beamwidths to ensure strong coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If blind-addition process is used to establish secondary connection, then connection establishment speed is improved, but coverage reliability deteriorates when secondary node has wide beamwidth
Solution Approach 1:
The system dynamically selects between blind-addition and threshold-based addition processes based on the secondary node's beamwidth characteristics. For narrow beamwidth nodes, blind-addition is used to maximize speed; for wide beamwidth nodes, threshold-based addition is used to ensure reliability. This dynamic adaptation resolves the contradiction by adjusting the connection establishment strategy according to the specific propagation conditions.
2Reliability
If threshold-based-addition process is used to ensure strong coverage, then coverage reliability is improved, but connection establishment speed deteriorates
Solution Approach 1:
The invention changes the operational parameters of the connection establishment process based on the secondary node's beamwidth. When beamwidth is narrow, the system uses blind-addition with relaxed thresholds for speed; when beamwidth is wide, it employs threshold-based addition with appropriate thresholds for reliability. This parameter adaptation allows the system to optimize for the appropriate criterion based on propagation characteristics.
3Productivity
If dual-connectivity configuration is optimized for narrow beamwidth nodes, then connection establishment efficiency is improved, but performance deteriorates for wide beamwidth nodes
Solution Approach 1:
The system applies different connection establishment strategies tailored to the local characteristics of each secondary node. Instead of using a uniform approach, the invention evaluates the beamwidth of each SN and selects the appropriate process (blind-addition or threshold-based addition) specifically suited for that node's propagation characteristics. This localized optimization ensures both efficiency for narrow beamwidth nodes and reliability for wide beamwidth nodes.
Data Source
AI summary
A mechanism for controlling configuration of dual connectivity for a UE that has a first connection with a first access node. The first access node could make a determination whether a beamwidth of a second access node with which the UE does not yet have a connection is at least as wide as a predefined threshold angle. If not, then the first access node could apply blind addition, in which the first access node works to add for the UE the second connection without requiring as a condition precedent the UE reporting being in threshold strong coverage of the second access node. Whereas, if so, then the first access node could instead apply threshold-based addition, in which the first access node works to add for the UE the second connection if and when the UE reports being in threshold strong coverage of the second access node.