Wireless Handover via Link Degradation Detection
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Solution Overview
Problem
Millimeter wave radio access points experience sudden link blockages due to obstructions, leading to high interruption times in data transmission, while low-frequency band nodes have limited bandwidth and data rates, necessitating a seamless handover mechanism between radio access points.
Innovation Solution
A method for wireless data transmission that detects link degradation in a first radio access point and triggers a handover to a second radio access point by sending information to a network entity, which measures and selects a suitable access point based on performance indicators like physical link quality and hybrid automatic repeat request status, ensuring a seamless transition before link quality degrades further.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If millimeter wave radio access points are used for capacity enhancement, then data rates are improved, but link reliability deteriorates due to obstructions blocking the Line Of Sight
Solution Approach 1:
The system performs preliminary detection of link degradation through performance indicators (signal quality, blockage probability) before the link is completely blocked. This early detection triggers a handover decision to a different radio access point before interruption occurs, resolving the contradiction by maintaining reliability while preserving high data rate capability through proactive switching between millimeter wave access points
Solution Approach 2:
The system changes operational parameters by switching between different radio access points based on detected link conditions. When performance indicators indicate degradation, the system transitions from one millimeter wave access point to another, changing the spatial and frequency parameters of the connection to maintain both high data rates and link reliability
2Loss of time
If handover detection is performed based on performance indicators, then handover timing is improved, but data transmission interruptions increase during the handover process
Solution Approach 1:
The network entity receives performance indicator information from the first radio access point and makes handover decisions before the link is completely blocked. By detecting degradation trends in advance and initiating handover procedures proactively, the system minimizes interruption time while maintaining data transmission continuity through seamless switching
Data Source
AI summary
A method of wireless data transmission at a first radio access point, including detecting a degradation of a first radio link established for a first frequency band between the first radio access point and a user equipment, and sending, addressed to a network entity, information to trigger a handover or handover decision of the wireless data transmission from the first radio link of the first radio access point operating in the first frequency band to a second radio link of a second radio access point operating in the first frequency band depending on the result of the detection.