公开(公告)号：US11246088B2

公开(公告)日：2022-02-08

申请号：US16845877

申请日：2020-04-10

Applicant: Cisco Technology, Inc.

Inventor： Vimal Srivastava ,  Sri Gundavelli ,  Aeneas Sean Dodd-Noble ,  Irfan Ali ,  Ravi Kiran Guntupalli ,  Ian McDowell Campbell

IPC: H04W48/18 ,  H04W36/00 ,  H04W48/16 ,  H04W80/02 ,  H04L29/08 ,  H04L12/24 ,  H04L29/12 ,  H04W36/16 ,  H04W76/19

Abstract: A network slice controller obtains health information of an active network slice provided by a first vendor and health information of a set of backup network slices provided by a second vendor. The network slice controller evaluates, using a set of policies corresponding to management of the active network slice, the health information of the active network slice to determine whether the active network slice has failed. As a result of the failure of the active network slice, the network slice controller identifies one or more backup network slices of the set of backup network slices to serve as new active network slices. The network slice controller activates these one or more backup network slices to serve as the new active network slices for the network.

公开(公告)号：US20230354017A1

公开(公告)日：2023-11-02

申请号：US18344453

申请日：2023-06-29

Applicant: Cisco Technology, Inc.

Inventor： Irfan Ali

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

CPC classification number: H04W12/037 ,  H04W76/12 ,  H04W12/0431 ,  H04W12/041 ,  H04W36/0038 ,  H04W36/08 ,  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：US11323550B2

公开(公告)日：2022-05-03

申请号：US16881200

申请日：2020-05-22

Applicant: Cisco Technology, Inc.

Inventor： Irfan Ali ,  Subrata Mukherjee

IPC: H04L29/06 ,  H04W8/20 ,  H04L69/22 ,  H04W76/11 ,  H04W68/00 ,  H04W60/04 ,  H04W60/00

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：US20210321325A1

公开(公告)日：2021-10-14

申请号：US16845877

申请日：2020-04-10

Applicant: Cisco Technology, Inc.

Inventor： Vimal Srivastava ,  Sri Gundavelli ,  Aeneas Sean Dodd-Noble ,  Irfan Ali ,  Ravi Kiran Guntupalli ,  Ian McDowell Campbell

IPC: H04W48/18 ,  H04W48/16 ,  H04W80/02 ,  H04W36/00 ,  H04W76/19 ,  H04L12/24 ,  H04L29/12 ,  H04W36/16 ,  H04L29/08

Abstract: A network slice controller obtains health information of an active network slice provided by a first vendor and health information of a set of backup network slices provided by a second vendor. The network slice controller evaluates, using a set of policies corresponding to management of the active network slice, the health information of the active network slice to determine whether the active network slice has failed. As a result of the failure of the active network slice, the network slice controller identifies one or more backup network slices of the set of backup network slices to serve as new active network slices. The network slice controller activates these one or more backup network slices to serve as the new active network slices for the network.

公开(公告)号：US20200007590A1

公开(公告)日：2020-01-02

申请号：US16118554

申请日：2018-08-31

Applicant: Cisco Technology, Inc.

Inventor： Aeneas Sean Dodd-Noble ,  Irfan Ali ,  Pablo Camarillo Garvia ,  Om Prakash Suthar ,  Ravi Kiran Guntupalli ,  Arun C. Alex

IPC: H04L29/06 ,  H04L29/08 ,  H04L12/46

Abstract: Various implementations disclosed herein enable programming user plane gateway controllers over enhanced N9 interfaces. In various implementations, a method of gateway controlling is performed by a computing device including one or more processors, and a non-transitory memory. In various implementations the method includes determining, by a first packet gateway controller connected to a first session manager device, that a user equipment moved to a geographical area that is served by a second session manager device. In some implementations, the method includes receiving, by the first packet gateway device, a set of information for a second packet gateway device. In some implementations, the method includes transmitting, by the first packet gateway device, a session establishment request via a first network interface to the second packet gateway controller using segment routing via a second network interface.

公开(公告)号：US12041440B2

公开(公告)日：2024-07-16

申请号：US18344453

申请日：2023-06-29

Applicant: Cisco Technology, Inc.

Inventor： Irfan Ali

IPC: H04W12/037 ,  H04W12/041 ,  H04W12/0431 ,  H04W36/00 ,  H04W36/08 ,  H04W76/12 ,  H04W80/06 ,  H04W80/08 ,  H04W92/04 ,  H04W92/14

CPC classification number: H04W12/037 ,  H04W12/041 ,  H04W12/0431 ,  H04W36/0038 ,  H04W36/08 ,  H04W76/12 ,  H04W80/06 ,  H04W80/085 ,  H04W92/04 ,  H04W92/045 ,  H04W92/14

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：US11743230B2

公开(公告)日：2023-08-29

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

CPC classification number: 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：US20230114175A1

公开(公告)日：2023-04-13

申请号：US17846729

申请日：2022-06-22

Applicant: Cisco Technology, Inc.

Inventor： Irfan Ali ,  Ravi Shankar Mantha ,  Ravi Kiran Guntupalli ,  Jis Abraham

IPC: H04W36/00 ,  H04M15/00 ,  H04W8/02 ,  H04W36/30

Abstract: A system is provided for supporting roaming between LTE EPC network and 5G network of a first mobile network operator by 5GC network of a second network operator. The system may include the EPC network including a serving gateway in communication with a 4G base station being in the EPC network. The system may also include the 5G network of the first mobile network operator including a vSMF in communication with a 5G base station being in the 5G network of the first network operator. The system may also include the 5GC network of the second network operator including a hSMF. The vSMF is configured to receive a communication from the serving gateway to anchor mobility between the LTE EPC network and the 5G network of the first mobile network operator, and to communicate with the hSMF in the 5GC network of the second network operator using 5G roaming interfaces.

公开(公告)号：US20230018399A1

公开(公告)日：2023-01-19

申请号：US17377944

申请日：2021-07-16

Applicant: Cisco Technology, Inc.

Inventor： Irfan Ali

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

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：US20220394819A1

公开(公告)日：2022-12-08

申请号：US17336857

申请日：2021-06-02

Applicant: Cisco Technology, Inc.

Inventor： Irfan Ali ,  Ian McDowell Campbell ,  Ravi Shankar Mantha

IPC: H04W88/16 ,  H04W28/02 ,  H04W76/16 ,  H04W76/12

Abstract: The present technology is directed to establishing a connection between a client device within a 2G or 3G network and 5G core through an interworking function. The present technology can perform establishing a Gn-4G interworking function (IWF) between a client access network and a packet anchor network and performing one or more network functions through the Gn-4G IWF in providing a client of the client access network access to network services through the packet anchor network. The one or more network functions appear as one or more Gateway GPRS Support Node (GGSN) functions from the client access network (e.g., 2G or 3G network). The one or more network functions concurrently appear as one or more S4 Serving GPRS Support Node (SGSN) functions from the packet anchor network (e.g., 4G or 5G network).