UE Handover via Mobility Status Detection
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Solution Overview
Problem
Network handovers for User Equipment (UE) often result in temporary disruptions and inefficient use of network resources due to frequent connections and disconnections between small cells and macro cells, especially for high mobility users, leading to degraded user experience and increased resource utilization.
Innovation Solution
Implementing a system that determines the mobility status of UE and selectively performs handovers based on signal strength and mobility status, prioritizing connections to macro cells for high mobility users to reduce frequent handovers and optimize resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If handovers are performed based on signal strength between small cells and macro cells, then network coverage is maintained, but frequent handovers occur for high mobility users causing service disruptions and inefficient resource usage
Solution Approach 1:
The system changes the handover decision parameter from signal strength alone to a composite parameter that includes mobility status. By introducing mobility status as an additional parameter, the system can distinguish between stationary users (who benefit from small cell handovers for signal quality) and high mobility users (who benefit from macro cell connections for continuity), thereby resolving the contradiction between maintaining coverage and reducing unnecessary handovers.
2Reliability
If multiple handovers are performed as device moves through geographic region, then network coverage is maintained, but user experience degrades due to application disruptions
Solution Approach 1:
The system modifies the handover triggering parameters by incorporating mobility status detection. For high mobility users, the system adjusts the handover policy to prefer macro cells, reducing the frequency of handovers and thereby minimizing application disruptions and improving user experience while still maintaining network coverage through the macro cell infrastructure.
3Measurement precision
If device connects to small cells with stronger signal, then signal quality improves, but handover frequency increases for high mobility users
Solution Approach 1:
The system changes the handover decision parameters by adding mobility status as a critical factor. Instead of solely relying on signal strength measurements that favor small cells, the system now considers mobility status to modulate the handover behavior. For high mobility users, this parameter change results in preferring macro cells, thereby reducing handover frequency while accepting slightly lower signal quality in exchange for connection stability.
Data Source
AI summary
Systems and methods include an access layer to perform handovers for a User Equipment (UE) using a mobility status of the UE. A source access node (e.g., a femto cell, small cell, or a macro cell) establishes a first network connection with the UE. Based on a mobility status of the UE, the source access node selects either a small cell access node or a macro cell access node as a target node for connecting to the UE with a handover (e.g., by establishing a second network connection with the UE). The UE may have a medium mobility status or a high mobility status and, in response, be connected to the macro cell access cell for continuous connectivity. Alternatively, the UE may have the low mobility status and, in response, a signal strength analysis of the access nodes may be performed to select the target node for the handover.