公开(公告)号：US20220353658A1

公开(公告)日：2022-11-03

申请号：US17865870

申请日：2022-07-15

Applicant: Cisco Technology, Inc.

Inventor： Srinath Gundavelli ,  Vimal Srivastava ,  Aeneas Sean Dodd-Noble

IPC: H04W4/50 ,  H04W76/10 ,  H04W76/30 ,  H04W8/18

Abstract: A user device operates a first data session using a first network slice. The user device obtains a trigger notification from a remote application that identifies a second network slice, and the user device determines that the first network slice and the second network slice are mutually exclusive. The user device ends the first data session on the first network slice and initiates a second data session on the second network slice.

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：US11206593B2

公开(公告)日：2021-12-21

申请号：US16790078

申请日：2020-02-13

Applicant: Cisco Technology, Inc.

Inventor： Om Prakash Suthar ,  Ryo Watanabe ,  Aeneas Sean Dodd-Noble ,  Raghavendra Suryanarayanarao Vidyashankar ,  Vivek Agarwal

IPC: H04W36/00 ,  H04W36/12 ,  H04W8/24

Abstract: In one example, an indication that a user equipment participating in a Packet Data Network (PDN) session hosted by a Serving Gateway (SGW) and a PDN Gateway (PGW) is transitioning from a first Mobility Management Entity (MME) to a second MME is obtained. An indication that the SGW is co-located with the PGW and an identification of the SGW are obtained. Based on the indication that the SGW is co-located with the PGW and the identification of the SGW, it is determined that the SGW is reachable from the second MME. In response to determining that the SGW is reachable from the second MME, the SGW is selected to host the PDN session after the user equipment transitions from the first MME to the second MME.

公开(公告)号：US11202221B2

公开(公告)日：2021-12-14

申请号：US16694235

申请日：2019-11-25

Applicant: Cisco Technology, Inc.

Inventor： Srinath Gundavelli ,  Ravi Kiran Guntupalli ,  Aeneas Sean Dodd-Noble ,  Kirk McBean

IPC: H04W28/02 ,  H04W36/32 ,  H04L12/721 ,  H04W40/36 ,  H04L12/723 ,  H04W36/00 ,  H04W28/12 ,  H04L12/715 ,  H04L12/749 ,  H04W88/16 ,  H04W8/08 ,  H04W24/02 ,  H04W36/12 ,  H04L29/12 ,  H04W40/24

Abstract: A control plane (CP) entity is to adaptively reroute user plane traffic of a mobile node (MN) with use of a segment routing (SR) for IPv6. A message indicating an attachment of the MN to the mobile network is received selecting a first user plane (UP) anchor node. A first set of home network prefixes (HNPs) are allocated to the MN. An IP traffic flow using a first HNP prefix is established between the MN and a correspondent node (CN) along a first network path—defined at least in part by the first UP anchor node and an anchor node of the CN. In response to a handover of the MN, a message indicating a subsequent attachment of the MN is received selecting a second UP anchor node. The second UP anchor node is instructed to host the first HNP prefix previously allocated by the first UP anchor node.

公开(公告)号：US20210258766A1

公开(公告)日：2021-08-19

申请号：US16791500

申请日：2020-02-14

Applicant: Cisco Technology, Inc.

Inventor： Ryo Watanabe ,  Aeneas Sean Dodd-Noble ,  Santhosh Shenoy Panambur ,  Om Prakash Suthar ,  Raghavendra Vidyashankar Suryanarayanarao ,  Vivek Agarwal

IPC: H04W8/08 ,  H04W48/16 ,  H04L29/12 ,  H04W60/00 ,  H04W36/32 ,  H04W36/00

Abstract: Presented herein are efficient techniques through which a Third Generation Partnership Project (3GPP) Access and Mobility Management Function (AMF) may retrieve information for a Mobility Management Entity (MME) to support graceful mobility for various inter-Radio Access Technology (inter-RAT) mobility scenarios. In one example, a method includes determining, by an AMF, an inter-RAT mobility event for a user equipment; identifying, by the AMF, an MME associated with the inter-RAT mobility event based, at least in part, on MME information contained in a network database; and transferring context information for the user equipment between the AMF and the MME. In one instance, the network database may be a Network Repository Function (NRF) for a 3GPP Fifth Generation mobile network and the MME information may be associated with an MME network function type stored in the NRF.

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：US10798178B2

公开(公告)日：2020-10-06

申请号：US16389420

申请日：2019-04-19

Applicant: Cisco Technology, Inc.

Inventor： Aeneas Sean Dodd-Noble ,  Om Prakash Suthar ,  Ianik Semco

IPC: H04L29/08 ,  H04W12/08 ,  H04L29/06 ,  H04W84/04

Abstract: A network function (NF) entity in a communication network receives User Plane Function (UPF) registration information for a plurality of UPFs, the registration information including a respective network attribute for each UPF. The NF entity associates each UPF with a corresponding network based on the respective network attribute, and map one or more User Equipment (UE) to the corresponding network based on a security policy to create a UE-to-network table. The NF further receives a request to establish a session for a subsequent UE, the request including a subsequent UE identifier, and determine an access permission for the subsequent UE to access the corresponding network based on the subsequent UE identifier and the UE-to-network table. The NF selects one UPF from the plurality of UPF to service the session for the subsequent UE based on the access permission, and an association between the one UPF and the corresponding network.

公开(公告)号：US20200267049A1

公开(公告)日：2020-08-20

申请号：US16278787

申请日：2019-02-19

Applicant: Cisco Technology, Inc.

Inventor： Raghavendra Suryanarayanarao ,  Om Prakash Suthar ,  Aeneas Sean Dodd-Noble ,  Vivek Agarwal ,  Rajiv Asati ,  Carlos M. Pignataro

IPC: H04L12/24 ,  H04W72/10 ,  H04W76/10 ,  H04L12/803

Abstract: Techniques are presented in which a new information element signaling priority of a management entity is included in a setup (e.g., S1-Setup) response or configuration update message sent by a management entity to a base station entity. The base station entity interprets this priority information along with the relative capacity information in an appropriate way to load-distribute the traffic/calls to highly preferable management entity instances (at a local site) when they are available, and switchover/failover to lower preference management entity instances (at a remote site) when there is a local site outage/failure or insufficient capacity in a geo-resilient pooled network.

公开(公告)号：US10742396B2

公开(公告)日：2020-08-11

申请号：US16415884

申请日：2019-05-17

Applicant: Cisco Technology, Inc.

Inventor： Om Prakash Suthar ,  Ammar Rayes ,  Michael David Geller ,  Ian McDowell Campbell ,  Aeneas Sean Dodd-Noble

IPC: H04L9/06 ,  H04W12/06 ,  H04W12/08 ,  H04L29/06 ,  G06Q20/40 ,  G06Q20/32 ,  H04W60/00 ,  G06Q20/36 ,  G06Q20/10 ,  G06Q20/38 ,  G06Q20/06 ,  H04L9/32 ,  G06F9/455 ,  H04L9/08 ,  H04L9/30 ,  H04L12/911 ,  H04W8/02 ,  H04W88/02 ,  H04W8/18 ,  H04W60/04

Abstract: A network function (NF) entity in a communication network receives authentication data associated with a User Equipment (UE), determines the UE supports a blockchain registration procedure based on the authentication data, exchanges authentication messages with a Blockchain Roaming Broker (BRB) entity over a blockchain network interface, receives a blockchain authentication confirmation from the BRB entity, and registers the UE with the core network based on the blockchain authentication confirmation.

公开(公告)号：US10361843B1

公开(公告)日：2019-07-23

申请号：US16205017

申请日：2018-11-29

Applicant: Cisco Technology, Inc.

Inventor： Om Prakash Suthar ,  Ammar Rayes ,  Michael David Geller ,  Ian McDowell Campbell ,  Aeneas Sean Dodd-Noble

IPC: H04L9/06 ,  H04L9/08 ,  H04L12/24 ,  H04L29/06 ,  G06F9/455 ,  H04L9/32 ,  H04L9/30 ,  H04L12/911 ,  H04W8/02

Abstract: A network slice manager receives a workload mobility request to add network resources to a domain in the communication network, and authenticates a virtual network function (VNF) with a blockchain authentication function (BAF) over a blockchain network interface based on the workload mobility request. The network slice manager further receives an indication of a successful authentication from the BAF, and instantiates the VNF in the domain of the communication network based on the indication of the successful authentication. Notably, these authentication processes may be readily adapted to instantiate new network resources or migrate existing network resources between domains.