公开(公告)号：US20220263792A1

公开(公告)日：2022-08-18

申请号：US17733489

申请日：2022-04-29

Applicant: Cisco Technology, Inc.

Inventor： Aeneas Sean Dodd-Noble ,  Irfan Ali ,  Ravi Kiran Guntupalli ,  Ravi Shekhar

IPC: H04L61/256

Abstract: A method enables communication between Session Management Function (SMF) and User Plane Function (UPF) instances which are separately deployed behind Network Address Translation (NAT) services. The method includes configuring an SMF or a UPF to initiate an association with a corresponding UPF or SMF. The SMF registers first information with a Network Repository Function (NRF) enabling the remote UPF to communicate with the SMF through a NAT service. The method further includes obtaining second information from the NRF enabling the SMF to communicate with the remote UPF through the NAT service. The method also includes sending an association request to the remote UPF based on the second information and receiving an association response from the remote UPF through the NAT service.

公开(公告)号：US20210258406A1

公开(公告)日：2021-08-19

申请号：US16881200

申请日：2020-05-22

Applicant: Cisco Technology, Inc.

Inventor： Irfan Ali ,  Subrata Mukherjee

IPC: H04L29/06 ,  H04W8/20 ,  H04W60/00 ,  H04W68/00 ,  H04W60/04 ,  H04W76/11

Abstract: Presented herein are techniques to facilitate that enable notifications to be sent to multiple consumers for Third Generation Partnership Project (3GPP) architectures. In one example, a method is provided that may include obtaining, at a first network entity, a notification subscription message from a second network entity, the notification subscription message comprising a plurality of notification identifiers associated with the second network entity for notifications that are to be communicated to the second network entity, wherein the plurality of notification identifiers are indicated, at least in part, in a header of the notification subscription message; and communicating one or more notifications to the second network entity, wherein the one or more notifications are load-shared among the plurality of notification identifiers associated with the second network entity.

公开(公告)号：US11071036B2

公开(公告)日：2021-07-20

申请号：US16662275

申请日：2019-10-24

Applicant: Cisco Technology, Inc

Inventor： Subrata Mukherjee ,  Irfan Ali

IPC: H04W36/34 ,  H04W60/00 ,  H04W36/30 ,  H04W36/14 ,  H04W60/06

Abstract: A method is provided for handling a voice call in a heterogeneous network environment by a wireless device. The method includes sending a registration request to a network node in a Next Generation (5G) network. The wireless device has an existing voice call on a different network in the heterogeneous network environment. The method further includes receiving a registration acceptance from the network node in the 5G network. The registration acceptance indicates that IMS voice services are supported, but existing voice calls are not supported. The method further includes determining to stop an attempt to move the existing voice call to the 5G network.

公开(公告)号：US10798182B2

公开(公告)日：2020-10-06

申请号：US16201005

申请日：2018-11-27

Applicant: Cisco Technology, Inc.

Inventor： Irfan Ali ,  Humberto Jose La Roche ,  Aeneas Sean Dodd-Noble ,  Ravi Kiran Guntupalli ,  Ravi Shekhar

IPC: H04L29/08 ,  H04L29/12

Abstract: In accordance with various embodiments, a method is performed including establishing a first communication session between an application function and a user equipment assigned a first IP address. The method includes determining, by the application function, that the user equipment has changed location. The method includes, in response to determining that the user equipment has changed location, sending, by the application function, a request that the user equipment be assigned a second IP address. The method includes establishing a second communication session between the application function and the user equipment assigned the second IP address.

公开(公告)号：US20250016646A1

公开(公告)日：2025-01-09

申请号：US18347783

申请日：2023-07-06

Applicant: Cisco Technology, Inc.

Inventor： Irfan Ali ,  Vimal Srivastava ,  Ravi Shekhar

IPC: H04W36/22 ,  H04W36/00

Abstract: The present technology involves system, methods, and computer-readable media for establishing mobility of user equipment (UEs) or mobile from congested new radio (NR) cells to un-congested Long-Term Evolution (LTE) cells. For operators that deploy both LTE cells and NR cells, the UEs can move from congested NR cells to un-congested LTE cells but can also be handed back into un-congested NR cells.

公开(公告)号：US20240196189A1

公开(公告)日：2024-06-13

申请号：US18063638

申请日：2022-12-08

Applicant: Cisco Technology, Inc.

Inventor： Sri Gundavelli ,  Vimal Srivastava ,  Irfan Ali

IPC: H04W8/08

CPC classification number: H04W8/08

Abstract: Disclosed herein are systems, methods, and computer-readable media for causing an user equipment (UE) to connect to a non-public network (NPN) while meeting time and location requirements. In one aspect, a method includes receiving, by the UE and from a home public land mobile network (h-PLMN), a steering of roaming update providing a steering of roaming record. In one aspect, the UE, is configured based on the steering of roaming record, to connect to the non-public network (NPN) when a context of the UE meets time and location requirements. In one aspect, the method includes establishing, by the UE, a session with the NPN when the context of the UE meets the time and location requirements.

公开(公告)号：US11950128B2

公开(公告)日：2024-04-02

申请号：US17490429

申请日：2021-09-30

Applicant: Cisco Technology, Inc.

Inventor： Irfan Ali ,  Ravi Kiran Guntupalli

IPC: H04W28/02 ,  H04W28/08 ,  H04W28/10

CPC classification number: H04W28/0273 ,  H04W28/0268 ,  H04W28/09 ,  H04W28/10

Abstract: A control plane (CP) function for session management performs a procedure for establishing local traffic offloading for a user equipment (UE) in a mobile network having an Evolved Packet Core (EPC) and Fifth Generation (5G) converged core that supports communications via a Long-Term Evolution (LTE) radio access network (RAN) and a Fifth Generation (5G) RAN. Initially, a connection is established for the UE via the LTE RAN that includes a first bearer between the LTE RAN and a central serving gateway-user plane (SGW-U) at a central location, and a second bearer between the central SGW-U and a central packet gateway-user plane (PGW-U) at the central location. The CP function inserts a local SGW-U at an edge location and subsequently inserts a local intermediate user plane function (I-UPF) with an uplink classifier (UL-CL) at the edge location for enabling edge offload of traffic from the LTE RAN.

公开(公告)号：US11706614B2

公开(公告)日：2023-07-18

申请号：US17377944

申请日：2021-07-16

Applicant: Cisco Technology, Inc.

Inventor： Irfan Ali

IPC: H04W12/037 ,  H04W36/00 ,  H04W80/08 ,  H04W76/12 ,  H04W12/0431 ,  H04W12/041 ,  H04W36/08 ,  H04W80/06

CPC classification number: H04W12/037 ,  H04W12/041 ,  H04W12/0431 ,  H04W36/0038 ,  H04W36/08 ,  H04W76/12 ,  H04W80/06 ,  H04W80/085

Abstract: The disclosed technology separates session management function signaling from the AMF. In particular, an SMF key is created for each SMF following the AMF generating an SM context request that contains gNB information and UE subscription information. Each PDU session creates a direct connection between the SMF and a local gNB. The gNB communicates with each SMF directly over a new interface (N3-C) for session management that is independent of the N2 interface used by the gNB to communicate with the AMF for mobility management. In this way, each SMF independently handles NAS signaling with the UE, using the SMF key and gNB related session-management signaling over an independent interface with the gNB. This removes the burden of relaying these communications through the AMF, which is then freed up to solely to handle mobility management signaling, resulting in an improved architecture.

公开(公告)号：US20230102552A1

公开(公告)日：2023-03-30

申请号：US17490429

申请日：2021-09-30

Applicant: Cisco Technology, Inc.

Inventor： Irfan Ali ,  Ravi Kiran Guntupalli

IPC: H04W28/02 ,  H04W28/10 ,  H04W28/08

Abstract: A control plane (CP) function for session management performs a procedure for establishing local traffic offloading for a user equipment (UE) in a mobile network having an Evolved Packet Core (EPC) and Fifth Generation (5G) converged core that supports communications via a Long-Term Evolution (LTE) radio access network (RAN) and a Fifth Generation (5G) RAN. Initially, a connection is established for the UE via the LTE RAN, where the connection includes a first bearer between the LTE RAN and a central serving gateway-user plane (SGW-U) at a central location, and a second bearer between the central SGW-U and a central packet gateway-user plane (PGW-U) at the central location. The CP function inserts a local SGW-U at an edge location and subsequently inserts a local intermediate user plane function (I-UPF) with an uplink classifier (UL-CL) at the edge location for enabling edge offload of traffic from the LTE RAN.

公开(公告)号：US11374900B2

公开(公告)日：2022-06-28

申请号：US17079836

申请日：2020-10-26

Applicant: Cisco Technology, Inc.

Inventor： Aeneas Sean Dodd-Noble ,  Irfan Ali ,  Ravi Kiran Guntupalli ,  Ravi Shekhar

IPC: H04L61/256

Abstract: A method enables communication between Session Management Function (SMF) and User Plane Function (UPF) instances which are separately deployed behind Network Address Translation (NAT) services. The method includes configuring an SMF or a UPF to initiate an association with a corresponding UPF or SMF. The SMF registers first information with a Network Repository Function (NRF) enabling the remote UPF to communicate with the SMF through a NAT service. The method further includes obtaining second information from the NRF enabling the SMF to communicate with the remote UPF through the NAT service. The method also includes sending an association request to the remote UPF based on the second information and receiving an association response from the remote UPF through the NAT service.