Selective Roaming Controller for Cell Edge Connectivity
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Solution Overview
Problem
Devices on the edge of a wireless local area network (WLAN) cell often experience poor quality connections, leading to connectivity issues and network performance problems, as existing solutions are one-size-fits-all and lack consideration for different types of devices and alternative network connections.
Innovation Solution
A method and system for selective optimized roaming, where a network controller assesses the connection quality of devices at the cell edge and, if a second network (like LTE) can provide a better connection, it disassociates the device from the initial network, allowing it to transition to the alternative network, utilizing RF signals and device identity validation to ensure a stable switch.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If devices maintain connection to cell edge access points, then network coverage is extended, but connection quality deteriorates
Solution Approach 1:
The system changes the connection parameter by transitioning devices from one network type to another (e.g., WLAN to LTE) based on connection quality parameters. When a device at the cell edge experiences poor WLAN connection quality, the system evaluates alternative networks and initiates a handoff to maintain reliable connectivity while preserving extended coverage.
2Device complexity
If one-size-fits-all roaming solutions are applied, then implementation complexity is reduced, but device-specific connectivity needs are not met
Solution Approach 1:
The system applies local quality by tailoring the roaming decision to each specific device's characteristics and situation. Instead of a uniform approach, the network controller evaluates device identity, connection quality, and alternative network availability for each individual device at the cell edge, providing customized connectivity solutions that match specific device needs.
3Productivity
If devices are disconnected from poor connections, then network performance is improved, but device connectivity may be lost without alternatives
Solution Approach 1:
The system performs preliminary action by evaluating alternative network connections before disconnecting devices from poor WLAN connections. The network controller proactively checks for available alternative networks (e.g., LTE) and validates their suitability before initiating disassociation, ensuring that device connectivity is maintained through a seamless handoff process rather than abrupt disconnection.
Data Source
AI summary
Embodiments for selective optimized roaming include receiving an indication that a connected device is at a cell edge of a first network. When an alternate access point cannot provide an alternate connection for the connected device, connections to other networks are assessed. This assessment includes receiving radio frequency (RF) signals for a second network and determining, from received RF signals, that the second network provides a better network connection. When the second network can provide a better network connection the connection to the first network is terminated.