Uplink Service Selection for Wireless Devices
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Solution Overview
Problem
In heterogeneous wireless networks, balancing wireless devices with high uplink data requirements, low power headroom, or high mobility with access nodes that are not equipped for uplink split mode leads to inconsistent and unreliable connections, resulting in frequent handovers and poor RF signal conditions.
Innovation Solution
Selecting serving access nodes with a higher quantity of antenna elements capable of uplink split mode for devices with low power headroom, high buffers, or high mobility, and adjusting handover thresholds to encourage attachment to nodes that support uplink split mode, ensuring consistent service and minimizing unnecessary handovers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wireless devices with high uplink data requirements are served by access nodes not capable of uplink split mode, then device coverage is maintained, but uplink service reliability deteriorates
Solution Approach 1:
The patent applies local quality by differentiating service handling based on device characteristics and access node capabilities. Devices with high uplink data requirements, low power headroom, or high mobility are specifically routed to access nodes capable of uplink split mode, while other devices can be served by conventional access nodes. This localized quality enhancement ensures reliable uplink service for demanding devices without requiring all access nodes to have advanced capabilities.
Solution Approach 2:
The patent implements preliminary action by proactively identifying devices that require uplink split mode capability before service degradation occurs. The system evaluates device characteristics (high uplink data requirements, low power headroom, high mobility) and pre-assigns these devices to access nodes with appropriate capabilities, preventing service reliability issues rather than reacting to them after they occur.
2Reliability
If access nodes without uplink split mode capability serve devices with low power headroom, then network coverage is maintained, but connection consistency deteriorates
Solution Approach 1:
The patent applies local quality by providing enhanced service quality specifically to devices with low power headroom through selective assignment to access nodes with uplink split mode capability. This ensures connection consistency for power-constrained devices without requiring all access nodes in the network to have advanced capabilities, thus avoiding unnecessary complexity expansion.
3Reliability
If devices with high mobility are served by access nodes without uplink split mode, then geographic coverage is maintained, but handover frequency increases
Solution Approach 1:
The patent applies local quality by providing specialized service handling for high-mobility devices through selective assignment to access nodes with uplink split mode capability. This localized enhancement stabilizes handovers for mobile devices without requiring capability differentiation across the entire access node infrastructure.
Solution Approach 2:
The patent implements preliminary action by proactively identifying high-mobility devices and assigning them to access nodes with appropriate capabilities before handover issues occur. This prevents excessive handover frequency by ensuring mobile devices are served by nodes equipped to handle mobility challenges.
4Productivity
If access nodes with fewer antenna elements serve devices requiring uplink split mode, then deployment cost is reduced, but uplink throughput deteriorates
Solution Approach 1:
The patent applies local quality by concentrating advanced antenna configurations on specific access nodes that serve devices requiring high uplink throughput. Instead of requiring all access nodes to have high antenna counts, the system selectively assigns demanding devices to nodes with sufficient antenna elements capable of uplink split mode, achieving high throughput where needed without universal complexity expansion.
Data Source
AI summary
Methods, systems, and processing nodes for ensuring uplink service for wireless devices capable of uplink split mode in EN-DC using both 4G LTE and 5G NR RATs, by selecting serving access nodes that are also capable of uplink split mode and/or coupled to large quantities of antenna elements relative to other potential serving access nodes. In particular, such serving access nodes are selected for wireless devices that exhibit one or more of a low power headroom, a high uplink buffer, or a high mobility.