Handovers between wireless local area networks (e.g., Wi-Fi networks) and Evolved UMTS Terrestrial Radio Access (E-UTRA) Radio Access Technology (RAT) networks (e.g., Wi-Fi to E-UTRA or E-UTRA to Wi-Fi) are common scenarios for wireless user equipment. Presented herein are techniques that can avoid, per handover, at least one N4 interaction being performed between a Session Management Function (SMF) and a User Plane Function (UPF), which can help to achieve quicker handovers, can help to avoid data loss during handovers, and can improve SMF and UPF performance by reducing processing of such network functions.
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Abraham, Jis and Shajahaan, Hajimulla, "METHOD TO OPTIMISE E-UTRA AND WIRELESS LOCAL AREA NETWORK (WLAN) HANDOVERS", Technical Disclosure Commons, (June 27, 2023)