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.

公开(公告)号：US11212850B2

公开(公告)日：2021-12-28

申请号：US16560204

申请日：2019-09-04

Applicant: Cisco Technology, Inc.

Inventor： Ravi Shekhar ,  Aeneas Sean Dodd-Noble

IPC: H04B7/00 ,  H04W76/10 ,  H04W16/02 ,  H04W80/06

Abstract: Techniques are described herein for network slice support of respective transport protocols. In one example, a session management function obtains, from a user equipment, a request for a network slice identifier in a network that includes a plurality of network slices each configured to support a respective transport protocol. In response to the request, the session management function identifies a first transport protocol of the respective transport protocols by which the user equipment is to communicate. Based on the first transport protocol, the session management function identifies a first network slice of the plurality of network slices by which the user equipment is to communicate. The first network slice is configured to support the first transport protocol. The session management function provides the network slice identifier to the user equipment. The network slice identifier corresponds to the first network slice.

公开(公告)号：US20200257579A1

公开(公告)日：2020-08-13

申请号：US16859510

申请日：2020-04-27

Applicant: Cisco Technology, Inc.

Inventor： Ravi Shekhar ,  Ameo Ghosh ,  Ian McDowell Campbell

IPC: G06F9/54 ,  H04L12/725 ,  H04L12/741 ,  H04L12/773 ,  H04L12/781 ,  H04L29/08

Abstract: Systems, methods, and computer-readable media for managing service calls over a network may include a signal routing engine with a maintained forwarding table for various network functions and micro-services in a services back end for the network. The signal routing engine can include a call conversion service for converting REST API calls to an internal network call protocol for increasing network function processing speeds, decreasing bandwidth usage, and improving network responsiveness and manageability.

公开(公告)号：US20190356742A1

公开(公告)日：2019-11-21

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：US20150334027A1

公开(公告)日：2015-11-19

申请号：US14285843

申请日：2014-05-23

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Hendrikus G. P. Bosch ,  Ian McDowell Campbell ,  Humberto J. La Roche ,  James N. Guichard ,  Surendra M. Kumar ,  Paul Quinn ,  Alessandro Duminuco ,  Jeffrey Napper ,  Ravi Shekhar

IPC: H04L12/851 ,  H04W72/04 ,  H04L12/801

CPC classification number: H04L47/2408 ,  H04L45/38 ,  H04L47/12 ,  H04L47/14 ,  H04W72/0493 ,  H04W88/16

Abstract: An example method is provided in one example embodiment and may include receiving a packet for a subscriber at a gateway, wherein the gateway includes a local policy anchor for interfacing with one or more policy servers and one or more classifiers for interfacing with one or more service chains, each service chain including one or more services accessible by the gateway; determining a service chain to receive the subscriber's packet; appending the subscriber's packet with a header, wherein the header includes, at least in part, identification information for the subscriber and an Internet Protocol (IP) address for the local policy anchor; and injecting the packet including the header into the service chain determined for the subscriber.

公开(公告)号：US12256268B2

公开(公告)日：2025-03-18

申请号：US18187050

申请日：2023-03-21

Applicant: Cisco Technology, Inc.

Inventor： Ravi Shekhar ,  Ameo Ghosh ,  Aeneas Sean Dodd-Noble

IPC: H04L41/40 ,  H04L67/56 ,  H04W28/08 ,  H04W28/084 ,  H04W84/04

Abstract: In a Fifth Generation (5G) network having an enhanced SBA (eSBA) architecture, a message with a header used to signal binding information (e.g. HTTP custom header for 3gpp-Sbi-Binding) may be received at a recipient NF (service) instance in a direct communication or via a service communication proxy (SCP) in an indirect communication. A binding indication comprising an address of an NF (service) instance may be obtained from the header. One or more alternative binding indications comprising one or more alternative addresses of one or more alternative NF (service) instances may also be obtained from the header. The one or more alternative NF (service) instances may be equivalent NFs (services) of the same NF (Service) Set as the NF (service) instance. The address may be used for communication of messages to the NF (service) instance, and the one or more alternative addresses may be used for load balancing or backup failure.

公开(公告)号：US12207354B2

公开(公告)日：2025-01-21

申请号：US17833320

申请日：2022-06-06

Applicant: Cisco Technology, Inc.

Inventor： Ravi Shekhar ,  Vimal Srivastava

IPC: H04B7/00 ,  H04L9/40 ,  H04L67/55 ,  H04W8/18 ,  H04W12/06

Abstract: In one illustrative example, a unified data management (UDM) of a mobile network is established in a UDM set with a plurality of private network UDMs instances of a plurality of private mobile networks. The UDM of the mobile network provides access to a plurality of subscription profiles associated with a plurality of subscribers of the mobile network, and each private network UDM instance provides access to a subset of the subscription profiles associated with a subset of the subscribers in the private mobile network. The UDM of the mobile network operates to communicate, in an authentication procedure, authentication data for authentication of a user equipment (UE) in the mobile network. After the authentication of the UE in the mobile network, the UDM operates to push authentication status information of the UE to the private network UDM instance of the private mobile network.

公开(公告)号：US20240389002A1

公开(公告)日：2024-11-21

申请号：US18329672

申请日：2023-06-06

Applicant: Cisco Technology, Inc.

Inventor： Ravi Shekhar ,  Vimal Srivastava ,  Irfan Ali ,  Ravi Kiran Guntupalli

IPC: H04W48/16 ,  H04W60/04

Abstract: Provided herein are techniques to facilitate service-based network function (NF) selection for roaming scenarios involving multiple home core networks. In one instance, a method may include obtaining, by a visited public land mobile network (PLMN) from a home PLMN that is to provide a first service for a wireless device, service hosting information that identifies a service hosting data network name and a service hosting PLMN that is to provide a second service for the wireless device in which the service hosting information is obtained by the visited PLMN through registration of the wireless device with the home PLMN. Upon determining that a session for the second service is to be established for the wireless device, the method may include performing a NF query to the service hosting PLMN identified from the service hosting information obtained through the registration in order to identify a NF to facilitate the session.

公开(公告)号：US20240364547A1

公开(公告)日：2024-10-31

申请号：US18307175

申请日：2023-04-26

Applicant: Cisco Technology, Inc.

Inventor： Sanjeev Panem Jaya ,  Ravi Shekhar

IPC: H04L12/14 ,  H04W28/08

CPC classification number: H04L12/1407 ,  H04W28/0846

Abstract: A mechanism is provided for traffic classification based on service function chain (SPC) rules in a visiting public land mobile network (V-PLMN) in case of local breakout roaming scenarios. The SPC rules provisioned in the H-PLMN are provided to functions in the V-PLMN which would use the local configuration and traffic conditions to map the rules to a service function path (SFP).

公开(公告)号：US12010758B2

公开(公告)日：2024-06-11

申请号：US18319737

申请日：2023-05-18

Applicant: Cisco Technology, Inc.

Inventor： Aditya Prakash ,  Ravi Shekhar ,  Vimal Srivastava

IPC: H04W8/18 ,  H04W8/20 ,  H04W28/24

CPC classification number: H04W8/186 ,  H04W8/20 ,  H04W28/24

Abstract: A network function selectively supports a mobile device with network settings appropriate for the device context of the mobile device. The network function obtains a device profile for the mobile device, which identifies multiple device groups, with each device group being associated with a corresponding set of network settings. The network function selects a device group among the device groups in the device profile based on a device context of the mobile device. Responsive to a notification of the mobile device in a different device context, the network function supports the mobile device with a different set of network settings that cause a Session Management Function (SMF) to reconfigure the user plane for the mobile device.