Beamforming Cell Reselection for Mobility-Aware Handover Control
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Solution Overview
Problem
Existing mobile networks struggle with inefficient cell-reselection in areas where multiple base stations with varying beam configurations overlap, leading to suboptimal throughput and increased handover frequencies due to differing beamwidths and mobility types of user devices.
Innovation Solution
A system and method for identifying user devices in idle mode, determining their location and mobility type, and generating beam priority tables based on proximity to base stations with different beam configurations, optimizing handover decisions using beamforming techniques to improve throughput and reduce handover frequency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a base station uses a greater number of beams, then each beam is narrower which improves throughput for devices in beam center, but increases handover frequency for mobile devices
Solution Approach 1:
The patent dynamically adjusts beamwidth based on device mobility type. For high-mobility devices, the system uses wider beams to reduce handover frequency, while for low-mobility or stationary devices, narrower beams are used to maximize throughput. This dynamic adaptation resolves the contradiction between throughput optimization and handover reduction.
Solution Approach 2:
The system changes the beamwidth parameter according to device mobility characteristics. By identifying device mobility type and adjusting the beamwidth parameter accordingly, the system achieves both high throughput for stationary devices and low handover frequency for mobile devices.
2Productivity
If beamwidth is narrow, then device is more likely to be in beam center improving throughput, but device moves out of beam faster increasing handover frequency
Solution Approach 1:
The system dynamically adapts beamwidth to device mobility. For high-speed moving devices, wider beams are used to maintain connection longer, reducing handover rate. For stationary or slow-moving devices, narrower beams concentrate energy for higher throughput.
Solution Approach 2:
The beamwidth parameter is changed based on detected device mobility characteristics, allowing the system to optimize between throughput and handover rate for different device scenarios.
3Power
If device connects to base station with more beams, then each beam has higher energy concentration improving throughput, but device experiences more frequent beam changes
Solution Approach 1:
The system applies different beam configurations (different numbers of beams) to different spatial regions or device types based on mobility characteristics. High-mobility devices receive wider beams with fewer total beams, while low-mobility devices receive narrower beams with higher energy concentration.
Solution Approach 2:
The system dynamically selects the appropriate number of beams and beamwidth based on real-time device mobility assessment, optimizing the balance between signal energy concentration and connection stability.
Data Source
AI summary
Aspects of the subject disclosure may include, for example, identifying a first communication device in idle mode, determining a first location associated with the first communication device, and determining a first mobility type associated with the first communication device. Further embodiments can include obtaining a neighbor list associated with a group of base stations in proximity to the first communication device, the neighbor list include a group of beam identifiers associated with each of the group of base stations. Additional embodiments can include providing first instructions to a serving base station associated with the first communication device indicating the serving base station to generate a beam priority table based on the first location of the first communication device, first mobility type associated with the first communication device, and the group of beam identifiers associated with each of the group of base stations. Other embodiments are disclosed.