Millimeter Wave Handover Controller for Load Distribution
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In densely clustered wireless terminal environments, millimeter wave communication systems face challenges in maintaining communication quality due to high processing loads on access points, leading to potential reductions in service quality for new terminals during handover operations.
Innovation Solution
A wireless communication device with multiple communication processors and a handover controller that determines the necessity of handover based on beam position, communication quality, and traffic load on adjacent sectors, allowing for load distribution and minimizing quality reductions by adjusting beam directionality and modulation/coding schemes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If many wireless terminals are connected to a single wireless access point covering a densely clustered area, then the coverage area is maximized, but the processing load on the access point increases and communication quality deteriorates
Solution Approach 1:
The access point is divided into multiple communication processors, each handling a specific sector. This segmentation distributes the processing load across multiple units, preventing any single processor from becoming overloaded while maintaining comprehensive coverage of the densely clustered area.
Solution Approach 2:
The system transitions from a single-access-point model to a multi-processor sectoral model, adding the dimension of spatial segmentation. Each communication processor covers a specific sector with directional beams, creating a multi-dimensional load distribution structure that improves both coverage and communication quality.
2Adaptability or versatility
If a new wireless terminal switches to an access point with high processing load, then connection switching is enabled, but the communication quality of the new terminal may not improve and could be lowered
Solution Approach 1:
The handover controller continuously monitors communication quality metrics and processing load conditions of target access points. Before executing handover, it evaluates whether the target can actually improve communication quality, preventing terminals from switching to overloaded access points that would degrade performance.
Solution Approach 2:
The system performs preliminary evaluation of handover conditions by assessing communication quality and load status before actual handover execution. This preliminary action ensures that handover decisions are made based on current system state, avoiding transitions to access points that cannot provide improved service.
3Productivity
If beamforming technology is used to control directionality with multiple antennas, then communication efficiency is improved, but device complexity increases
Solution Approach 1:
The antenna system is segmented into multiple communication processors, each responsible for a specific sector. This segmentation simplifies the beamforming control for each processor while collectively achieving comprehensive directional coverage, balancing complexity and efficiency.
Data Source
AI summary
A wireless communication device includes: 1st to Mth communication processors, respectively corresponding to 1st to Mth sectors (where M is an integer equal to or greater than 2), that communicate with a wireless terminal by using a beam in any of N directions (where N is an integer equal to or greater than 2) in one of the 1st to Mth sectors; and a handover controller that determines whether or not to perform handover of the 1st communication processor, according to a position in a 1st sector of the beam used by the 1st communication processor, a communication quality between the 1st communication processor and the wireless terminal, and a value related to traffic on the 2nd communication processor in a 2nd sector adjacent to the 1st sector.