公开(公告)号：US20180241615A1

公开(公告)日：2018-08-23

申请号：US15436836

申请日：2017-02-19

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Konstantin Livanos ,  Ian McDowell Campbell ,  Charles C. Wolfinger

IPC: H04L12/24 ,  H04L12/26 ,  H04W24/04

CPC classification number: H04L41/0668 ,  H04L12/1407 ,  H04L41/046 ,  H04L43/0805 ,  H04L43/0817 ,  H04L61/203 ,  H04M15/00 ,  H04M15/57 ,  H04M15/66 ,  H04M15/8228 ,  H04W4/24 ,  H04W24/04 ,  H04W88/16

Abstract: A method is provided in one example embodiment and may include maintaining, by a Diameter Routing Agent (DRA), an availability status for a plurality of network elements; receiving a request associated with a user equipment (UE) session, wherein a first network element of the plurality of network elements is serving the UE session; determining that the first network element serving the UE session is unavailable; and re-establishing the UE session at a second network element of the plurality of network elements that is available, wherein the re-establishing is performed without terminating the UE session.

公开(公告)号：US20180098245A1

公开(公告)日：2018-04-05

申请号：US15282857

申请日：2016-09-30

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Konstantin Livanos ,  Ian McDowell Campbell

IPC: H04W28/08 ,  H04L12/801 ,  H04L12/26 ,  H04L12/14

CPC classification number: H04W28/08 ,  H04L12/1407 ,  H04L43/0882 ,  H04L47/11 ,  H04L47/14 ,  H04M15/00 ,  H04M15/66 ,  H04M15/8027 ,  H04W4/24 ,  H04W28/0289

Abstract: A method is provided in one example embodiment and may include receiving load information for a plurality of cells of a Radio Access Network (RAN); determining, for each of a plurality of user equipment (UE) in each cell, identification information for each UE and an Access Point Name (APN) to which each UE is connected; identifying, from a plurality of policy servers, each policy server that serves each APN to which each UE in each cell of the plurality of cells is connected; and sending, to each of a particular policy server, congestion information comprising: an identity for each cell having UE that are connected to each APN served by the particular policy server; the corresponding congestion level for each of the cells; and a per-cell UE list identifying each of a plurality of UE connected to each of APNs served by the particular policy server.

公开(公告)号：US09755843B2

公开(公告)日：2017-09-05

申请号：US14614500

申请日：2015-02-05

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Konstantin Livanos ,  Ian McDowell Campbell

IPC: H04L12/16 ,  H04L12/14 ,  H04M15/00 ,  H04W4/24 ,  H04L12/24 ,  H04L29/08

CPC classification number: H04L12/1407 ,  H04L41/0893 ,  H04L67/10 ,  H04L67/1002 ,  H04M15/66 ,  H04W4/24

Abstract: A method is provided in one example embodiment and may include establishing a first binding for a first session for a UE, wherein the first binding includes, at least in part, PCEF connectivity information for a PCEF associated with a PGW hosting the first session for the UE, wherein the first binding is established by a first DRA in a first IP domain; receiving a request by second DRA in a second IP domain associated with establishing a second session for the UE; determining a PCRF serving the first session for the UE; and binding the second session for the UE with the first session for the UE. A method is provided in another example embodiment and may include exchanging PCEF connectivity information over a Dr interface between a plurality DRAs and maintaining PCEF connectivity information for one or more peer DRAs to which each DRA is connected.

公开(公告)号：US09621362B2

公开(公告)日：2017-04-11

申请号：US14612827

申请日：2015-02-03

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Konstantin Livanos ,  Ian McDowell Campbell

IPC: H04L12/16 ,  H04L12/14 ,  H04M15/00 ,  H04W4/24 ,  H04L12/24 ,  H04L29/08

CPC classification number: H04L12/1407 ,  H04L41/0893 ,  H04L67/10 ,  H04L67/1002 ,  H04M15/66 ,  H04W4/24

Abstract: A method is provided in one example embodiment and may include establishing a first binding for a first session for a UE, wherein the first binding includes, at least in part, PCEF connectivity information for a PCEF associated with a PGW hosting the first session for the UE, wherein the first binding is established by a first DRA in a first IP domain; receiving a request by second DRA in a second IP domain associated with establishing a second session for the UE; determining a PCRF serving the first session for the UE; and binding the second session for the UE with the first session for the UE. A method is provided in another example embodiment and may include exchanging PCEF connectivity information over a Dr interface between a plurality DRAs and maintaining PCEF connectivity information for one or more peer DRAs to which each DRA is connected.

公开(公告)号：US20160344565A1

公开(公告)日：2016-11-24

申请号：US14717887

申请日：2015-05-20

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Robert M. Batz ,  Ian McDowell Campbell ,  Hendrikus G. P. Bosch

IPC: H04L12/14 ,  H04L29/12 ,  H04M15/00 ,  H04L29/08

CPC classification number: H04L12/1407 ,  H04L12/1403 ,  H04L41/0893 ,  H04L41/5096 ,  H04L43/028 ,  H04L61/25 ,  H04L61/2514 ,  H04L61/6068 ,  H04L67/1002 ,  H04L67/14 ,  H04M15/66 ,  H04M15/8044 ,  H04M15/8214

Abstract: A method is provided in one example embodiment and may include receiving a first Internet protocol (IP) flow for an IP session for a subscriber; selecting a first service function group from a plurality of service function groups to perform one or more services for the IP session for the subscriber, wherein each of the plurality of service function groups comprises a plurality of service function chain types and wherein each service function chain type comprises an ordered combination of one or more service functions; assigning the IP session for the subscriber to the first service function group; and forwarding the first IP flow for the IP session of the subscriber across a first service function chain type for the first service function group based, at least in part, on a service policy for the subscriber.