公开(公告)号：US20230189194A1

公开(公告)日：2023-06-15

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.

公开(公告)号：US20240121588A1

公开(公告)日：2024-04-11

申请号：US17962913

申请日：2022-10-10

Applicant: Hewlett Packard Enterprise Development LP

Inventor： LU TIAN ,  Anders Askerup ,  David C. Williamson ,  John I. Ayers

IPC: H04W8/04 ,  H04W60/04 ,  H04W60/06

CPC classification number: H04W8/04 ,  H04W60/04 ,  H04W60/06

Abstract: The systems and method disclosed herein optimize the deregistration of user equipment (UE) from the 5GC. For example, when the UE operates in single-registration mode, for AMF 3GPP access registration with drFlag attribute set to false (or to be absent) in UDM/UDR, a “new attribute”, singleRegIndication, is defined. The AMF sets the singleRegIndication value to “NO_INDICATION” when there is no N26 interface connection to MME. UDM will not instruct HSS to cancel MME (and SGSN/VLR) if there is an old AMF 3GPP registration for which “NO_INDICATION” or “DEREGISTER_SN” is set as the singleRegIndication value (i.e. the old AMF was already registered with the single registration). Otherwise, the AMF sets the singleRegIndication value to “DEREGISTER_SN” when the AMF has established a N26 interface connection to the old MME. UDM can instruct HSS to cancel the MME (and SGSN/VLR).

公开(公告)号：US20230033997A1

公开(公告)日：2023-02-02

申请号：US17486738

申请日：2021-09-27

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： ANDERS H. ASKERUP ,  DAVID C. WILLIAMSON ,  LU TIAN

IPC: H04W4/60 ,  H04W4/20 ,  H04L29/08

Abstract: Systems and methods are provided for automatic notifications of expired subscriptions. In various embodiments, a network function can request a subscription from a Unified Data Repository (UDR). The request for the subscription can include a request for a notification when the subscription expires or at a time prior to the expiration of the subscription. When the subscription expires or at the time prior to the expiration of the subscription, the UDR can provide a notification that the subscription has expired or is about to expire. Based on the notification, the network function can request to re-subscribe or request a new subscription from the UDR.