TECHNICAL BACKGROUND

Wireless communication networks provide wireless data services to wireless user devices. Exemplary wireless data services include machine-control, internet-access, media-streaming, and social-networking. Exemplary wireless user devices comprise phones, computers, vehicles, robots, and sensors. The wireless communication networks have wireless access nodes which typically use antenna towers to exchange wireless signals with the wireless user devices using wireless network protocols. Exemplary wireless network protocols include Fifth Generation New Radio (5GNR), Millimeter-Wave (MMW), Long Term Evolution (LTE), Institute of Electrical and Electronic Engineers (IEEE) 802.11 (WIFI), and Low-Power Wide Area Network (LP-WAN). The wireless communication networks deliver the wireless data service using Quality-of-Service (QoS) levels. The QoS levels specify data communication parameters for throughput, latency, error rate, and the like. A live video conference may have guaranteed levels for data throughput and low latency, while an internet-access session may have best effort levels for data throughput, latency, and error rate.

As a wireless user device moves about, the wireless signal from its serving access node weakens and a wireless signal from a target access node strengthens. The wireless user device measures and reports the signal strength of the target access node to the serving access node. The serving access node compares the signal strength difference between the source and target to determine when to handover the wireless user device to the target access node. The serving access node may process other values along with the signal strength values like offsets and hysteresis. An exemplary offset is a frequency offset based on the frequency band used by the target access node. Unfortunately, the serving access nodes do not efficiently and effectively use QoS offsets to control the wireless handovers.

TECHNICAL OVERVIEW

A wireless communication network controls handovers based on comparative Quality-of-Service (QoS). Wireless access nodes wirelessly deliver wireless data services that have QoS Flow Identifiers (QFIs). The wireless access nodes determine performance metrics for individual QFIs. A handover controller compares the performance metrics for source/target access node pairs on a per-QFI basis to determine QFI offsets for individual QFIs and for QFI combinations. The source access nodes select the QFI offsets that correspond to the QFIs used by the user device. The source access nodes apply the selected QFI offsets to target signal strengths to reject or perform the handovers.

