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：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：US11234115B2

公开(公告)日：2022-01-25

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: H04W4/00 ,  H04W8/08 ,  H04L29/12 ,  H04W36/00 ,  H04W36/32 ,  H04W48/16 ,  H04W60/00

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：US11729608B2

公开(公告)日：2023-08-15

申请号：US17306330

申请日：2021-05-03

Applicant: Cisco Technology, Inc.

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

IPC: H04W8/26 ,  H04W76/12 ,  H04W4/02 ,  H04W8/08 ,  H04L61/4511 ,  H04W84/04 ,  H04W76/10

CPC classification number: H04W8/26 ,  H04L61/4511 ,  H04W4/025 ,  H04W8/08 ,  H04W76/12 ,  H04W76/10 ,  H04W84/042

Abstract: A solution for selecting an optimal user Plane entity (with Control and User Plane Separation (CUPS)) per UE during seamless roaming. In one embodiment, a method is provide that is performed by a control plane entity in a mobile core network that supports inter public land mobile network (PLMN) roaming among two or more PLMNs. The method includes obtaining a create session request from an entity in a second PLMN to which a user equipment has roamed from a first PLMN; selecting a particular user plane entity among a plurality of user plane entities based on one or more user equipment related parameters; and establishing a session with the particular user plane entity to serve user plane traffic in the mobile core network for the user equipment.

公开(公告)号：US20210258846A1

公开(公告)日：2021-08-19

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: H04W36/12

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：US20210258771A1

公开(公告)日：2021-08-19

申请号：US17306330

申请日：2021-05-03

Applicant: Cisco Technology, Inc.

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

IPC: H04W8/26 ,  H04W76/12 ,  H04W4/02 ,  H04W8/08 ,  H04L29/12

Abstract: A solution for selecting an optimal user Plane entity (with Control and User Plane Separation (CUPS)) per UE during seamless roaming. In one embodiment, a method is provide that is performed by a control plane entity in a mobile core network that supports inter public land mobile network (PLMN) roaming among two or more PLMNs. The method includes obtaining a create session request from an entity in a second PLMN to which a user equipment has roamed from a first PLMN; selecting a particular user plane entity among a plurality of user plane entities based on one or more user equipment related parameters; and establishing a session with the particular user plane entity to serve user plane traffic in the mobile core network for the user equipment.

公开(公告)号：US11070974B2

公开(公告)日：2021-07-20

申请号：US16367627

申请日：2019-03-28

Applicant: Cisco Technology, Inc.

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

IPC: H04W8/26 ,  H04W76/12 ,  H04W4/02 ,  H04W8/08 ,  H04L29/12 ,  H04W84/04 ,  H04W76/10

Abstract: A solution for selecting an optimal user Plane entity (with Control and User Plane Separation (CUPS)) per UE during seamless roaming. In one embodiment, a method is provide that is performed by a control plane entity in a mobile core network that supports inter public land mobile network (PLMN) roaming among two or more PLMNs. The method includes obtaining a create session request from an entity in a second PLMN to which a user equipment has roamed from a first PLMN; selecting a particular user plane entity among a plurality of user plane entities based on one or more user equipment related parameters; and establishing a session with the particular user plane entity to serve user plane traffic in the mobile core network for the user equipment.