公开(公告)号：US20220131830A1

公开(公告)日：2022-04-28

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: H04L29/12

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：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：US20250088952A1

公开(公告)日：2025-03-13

申请号：US18463057

申请日：2023-09-07

Applicant: Cisco Technology, Inc.

Inventor： Vimal Srivastava ,  Sri Gundavelli ,  Ravi Kiran Guntupalli

IPC: H04W48/18 ,  H04W8/22 ,  H04W48/16 ,  H04W60/00

Abstract: Systems and methods are provide to bring network capability awareness to steering of roaming (SoR). A home network includes a capabilities list of visited networks and their associated with the network capabilities. For SoR, he user equipment (UE) maintains a roaming partners list (RPL). The RPL provides a list of visited networks arranged in order of priority/preference (e.g., the first visited network in the RPL has first priority). The first visited network receives a registration request from the UE and relays a corresponding authentication request to the home network. The visited network in the RPL can be reordered when the UE requires a network capability not supported by the first visited network in the RPL, as indicated by the capabilities list. Depending on the implementation, the UE or the home network can make this decision to reorder the RPL.

公开(公告)号：US20240298234A1

公开(公告)日：2024-09-05

申请号：US18471575

申请日：2023-09-21

Applicant: Cisco Technology, Inc.

Inventor： Vimal Srivastava ,  Ravi Kiran Guntupalli ,  Piyush Srivastava ,  Amit Shivhare

IPC: H04W36/22 ,  H04W12/06 ,  H04W36/32

CPC classification number: H04W36/22 ,  H04W12/06 ,  H04W36/322

Abstract: Provided herein are techniques to facilitate location-specific wireless local area network (WLAN) offload restrictions for user equipment based on wireless wide area network (WWAN) radio band(s). In at least one example, a method performed by an authentication server of a WLAN may include, for a user equipment (UE) that is connected to an NR radio band of a WWAN and is seeking to connect to the WLAN, querying a subscription element of the WWAN to obtain a location indicator and an NR radio band indicator for the UE; determining, based on the location indicator and the NR radio band indicator, whether the UE is allowed or required to offload to the WLAN; and based on determining that the UE is allowed to offload from the WWAN to the WLAN, facilitating a WLAN association response message to be sent to the UE for offloading the UE to the WLAN.

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：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：US20230063570A1

公开(公告)日：2023-03-02

申请号：US17464158

申请日：2021-09-01

Applicant: Cisco Technology, Inc.

Inventor： Srinath Gundavelli ,  Vimal Srivastava ,  Ravi Kiran Guntupalli

IPC: H04W80/10 ,  H04W76/10 ,  H04L29/08 ,  H04W40/02 ,  H04W4/50

Abstract: Techniques are provided for operator specific customization of a network service configuration. In some embodiments, an operator defines a mapping between an application executing on a user equipment (UE) and a network service configuration. In some embodiments, the network service configuration indicates whether the application is to be supported via a UPF instance located within the core network or deployed at a network edge. The mapping is then provided to the UE, and passed back to the core network, for example, when the UE establishes a connection on behalf of the UE application. The core network then supports the UE application consistent with the configuration specified by the mapping.

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：US20200092745A1

公开(公告)日：2020-03-19

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

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：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.