公开(公告)号：US12022421B2

公开(公告)日：2024-06-25

申请号：US17547892

申请日：2021-12-10

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： John I. Ayers ,  Lu Tian ,  Anh Tran ,  David C. Williamson ,  Michael R. Kelly

IPC: H04W60/06 ,  H04W36/14 ,  H04W60/00

CPC classification number: H04W60/06 ,  H04W36/14 ,  H04W60/005

Abstract: 5G provides for interworking with the 4G/LTE networks, which provides for mobility of user equipment between the 5G and 4G/LTE networks. Mobility from 5G to 4G/LTE requires deregistering user equipment from the 5G core network (5GC) by communicating a deregistration notification from the Evolved Packet Core (EPC) to the 5GC. Systems and methods disclosed herein provide for an optimized deregistration process through avoidance of redundant deregistration notification traffic injected into the 5G network by utilizing 4G/LTE connectivity information to determine whether or not to inject deregistration notifications into the 5G network.