Wireless Handover Management via Context Analysis
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Solution Overview
Problem
The frequent execution of handovers in wireless networks can negatively impact network resource usage and service quality, especially when involving devices like NarrowBand IoT (NB-IoT) due to slow and unreliable signaling, and can lead to network congestion during unfavorable wireless conditions.
Innovation Solution
A handover management service that evaluates context information such as signal quality, device type, and traffic type to determine whether to perform a complete, partial, or preparatory handover, or no handover at all, optimizing resource usage and improving connectivity based on these factors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If handover is executed frequently to maintain connectivity, then service continuity is improved, but network resource usage deteriorates and congestion increases
Solution Approach 1:
The patent changes the parameter of handover execution by introducing conditional logic that evaluates multiple factors (signal quality thresholds, device type, traffic type, wireless conditions) before determining whether to perform handover. This transforms the traditional always-execute handover approach into a selective handover approach, reducing unnecessary handovers and optimizing network resource usage while maintaining service continuity when needed.
2Reliability
If complete handover procedure is performed to ensure connectivity, then service reliability is improved, but signaling overhead increases and service quality deteriorates for NB-IoT devices
Solution Approach 1:
The patent applies partial action by implementing different handover procedures (complete handover, partial handover, or no handover) based on evaluated conditions. For NB-IoT devices with unfavorable wireless conditions, the system may perform partial handover or skip handover entirely, reducing signaling overhead and time loss while maintaining adequate connectivity through alternative mechanisms suited to the device type and traffic characteristics.
Solution Approach 2:
The patent applies local quality by tailoring the handover procedure to specific local conditions including device type (e.g., NB-IoT), traffic type (e.g., intermittent vs. continuous), and wireless conditions. Each context receives a customized handover treatment rather than a uniform approach, optimizing the balance between connectivity reliability and signaling efficiency for each specific scenario.
3Reliability
If handover is performed during unfavorable wireless conditions to maintain connectivity, then service continuity is improved, but handover failure rate increases and network congestion worsens
Solution Approach 1:
The patent applies preliminary action by evaluating wireless conditions, signal quality, device type, and traffic type before initiating handover. This pre-evaluation allows the system to identify unfavorable conditions (poor signal quality, unsuitable device types, inappropriate traffic characteristics) and prevent handover execution in scenarios likely to fail, thereby reducing handover failure rate and avoiding unnecessary network congestion while preserving service continuity through alternative means.
Data Source
AI summary
A method, a device, and a non-transitory storage medium provide to establish a radio connection with an end device; obtain context information pertaining to the end device; analyze the context information; determine whether to not provide handover to the end device in response to the analysis of the context information; and transmit, to the end device, multiple thresholds that indicate when a partial handover is to be invoked and when a completive handover is to be invoked, in response to a determination that handover is to be provided to the end device.