公开(公告)号：US20210022103A1

公开(公告)日：2021-01-21

申请号：US16516737

申请日：2019-07-19

Applicant: Cisco Technology, Inc.

Inventor： Vimal Srivastava ,  Srinath Gundavelli

IPC: H04W64/00 ,  H04W4/029 ,  H04W4/40 ,  H04W48/18 ,  H04W48/16 ,  H04W60/00

Abstract: Techniques are described to provide a network location service for a user equipment (UE) when the UE is not served by a 3GPP radio; thereby enabling radio resource selection by the UE for Autonomous PC5 based communications. In one example, a method includes receiving, by a mobility element of a network, an attach request from a UE, wherein the attach request indicates an attach type associated with a network location service. The method may further include communicating, based on the attach type being associated with the network location service, an attach accept to the UE to trigger a location request for the UE, wherein the attach accept is communicated to the UE without the mobility element authenticating the UE; and communicating location information to the UE based on the location request.

公开(公告)号：US10750366B1

公开(公告)日：2020-08-18

申请号：US16720109

申请日：2019-12-19

Applicant: Cisco Technology, Inc.

Inventor： Srinath Gundavelli ,  Indermeet Singh Gandhi ,  Bart A. Brinckman ,  John Martin Graybeal

IPC: H04W12/06 ,  H04W12/04 ,  H04W12/00 ,  H04L9/08 ,  H04W84/04 ,  H04W60/04 ,  H04W12/10

Abstract: A user equipment (UE) may be in coverage of a local private non-Third Generation Partnership Project (non-3GPP) wireless network (e.g. a Wi-Fi network) of an enterprise. This non-3GPP wireless network may be part of a private communication system of the enterprise which further includes a local private 3GPP network (e.g. a Long-Term Evolution or “LTE” based network). When the non-3GPP wireless network advertises “single-authentication” support, the UE may complete authentication for non-3GPP access, obtain a Master Session Key (MSK) from the authentication, and generate an Access Security Management Entity (ASME) key (KASME) based on the MSK. In further implementations, the UE may obtain a Globally Unique Temporary Identifier (GUTI) from the non-3GPP wireless network. Subsequently, the UE may perform an attach procedure with the local private 3GPP network without performing an authentication procedure, presenting the GUTI that it obtained from the non-3GPP wireless network for 3GPP access.

公开(公告)号：US10567495B2

公开(公告)日：2020-02-18

申请号：US15353593

申请日：2016-11-16

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Indermeet Singh Gandhi ,  Srinath Gundavelli ,  Ramachandra Srinivasa Murthy

IPC: G06F15/173 ,  H04L29/08 ,  H04W4/70 ,  H04W4/00 ,  H04W12/08 ,  H04L12/927 ,  H04L29/06

Abstract: Embodiments include technologies for receiving two or more requests to join a network from an end device via two or more gateways, respectively, and selecting one of the two or more gateways for the end device. Embodiments further include sending, to the selected gateway, a response to a request to join the network received via the selected gateway, where the response includes an indication to the selected gateway to forward the request to join the network to an edge network server associated with the selected gateway. In more specific embodiments, an application is identified based on information included in the request to join the network, and a determination is made regarding whether to allocate an edge network server to the end device based, at least in part, on a type of the application. Specific embodiments can include the gateway being selected based, at least in part, on a policy.

公开(公告)号：US10517012B2

公开(公告)日：2019-12-24

申请号：US15872823

申请日：2018-01-16

Applicant: Cisco Technology, Inc.

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

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

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：US10448352B1

公开(公告)日：2019-10-15

申请号：US16291540

申请日：2019-03-04

Applicant: Cisco Technology, Inc.

Inventor： Mark Grayson ,  Rajesh S. Pazhyannur ,  Srinath Gundavelli ,  Mickael James Graham

IPC: H04W8/08 ,  H04W48/00 ,  H04W60/00 ,  H04W8/20

Abstract: A mobility management entity (MME) controls an enterprise fabric. The MME receives from a mobile device via a cellular network a request to initiate an attach procedure. In response, the MME acquires from the mobile device a unique equipment identifier of the mobile device. The MME generates an enterprise identity for the mobile device based on the unique equipment identifier, and registers the enterprise identity in the enterprise fabric. The MME signals to a user plane function of the cellular network that the mobile device has been registered, to trigger the user plane function to acquire an Internet Protocol (IP) address of the mobile device based on the enterprise identity. The MME receives from the user plane function the acquired IP address. The MME sends to the mobile device, through the cellular network, an attach accept message that includes the acquired IP address for use by the mobile device.

公开(公告)号：US20190223047A1

公开(公告)日：2019-07-18

申请号：US15872823

申请日：2018-01-16

Applicant: Cisco Technology, Inc.

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

IPC: H04W28/02 ,  H04L12/749 ,  H04L12/715 ,  H04W28/12

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：US10171260B2

公开(公告)日：2019-01-01

申请号：US15174115

申请日：2016-06-06

Applicant: Cisco Technology, Inc.

Inventor： Srinath Gundavelli ,  Abhijit Choudhury ,  Rohit Suri ,  Venkatesh Kanagasabapathy ,  Bhavannarayana Nelakanti ,  Sudhir Jain

IPC: H04L12/18 ,  H04L12/46 ,  H04L12/761 ,  H04W40/24 ,  H04W40/30 ,  H04W84/12 ,  H04W28/02 ,  H04W40/02

Abstract: Techniques are provided to manage how router advertisement messages are forwarded for ultimate wireless transmission in a wireless network. In one embodiment, a multicast router advertisement message intended for a virtual local area network is converted into individual unicast router advertisement messages directed to specific wireless mobile client devices that are part of that virtual local area network. In another embodiment, router advertisement messages are routed between controllers according to the current location of a wireless mobile client device. In still other embodiments, techniques are provided to minimize the volume of the router advertisement messages sent over a wireless network, and to proactively send a unicast router advertisement message to a mobile client device that has performed a handoff, without waiting for a router solicitation message.

公开(公告)号：US09942282B2

公开(公告)日：2018-04-10

申请号：US14880664

申请日：2015-10-12

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Srinath Gundavelli ,  Vimal Srivastava ,  Vojislav Vucetic

IPC: H04L29/06 ,  H04B1/3816

CPC classification number: H04L65/1073 ,  H04B1/3816 ,  H04L65/1006 ,  H04L65/1016 ,  H04L65/104 ,  H04L65/105 ,  H04L65/1069

Abstract: In one embodiment a router connects to a cellular network using at least one authentication credential stored on a smart card of the router. The router receives, from a client device coupled to the router, a Session Initiation Protocol (SIP) request to register with an Internet Protocol Multimedia Subsystem (IMS) network coupled to the cellular network. The router sends a SIP registration request for the client device to the IMS network, the SIP registration request comprising authorization information associated with the router, wherein the authorization information associated with the router is used by the IMS network to register the client device with the IMS network.

公开(公告)号：US20180034725A1

公开(公告)日：2018-02-01

申请号：US15727110

申请日：2017-10-06

Applicant: Cisco Technology, Inc.

Inventor： Srinath Gundavelli ,  Jason D. Dachtler ,  Sachin Gorde

IPC: H04L12/707 ,  H04W76/02 ,  H04L12/703 ,  H04W48/00 ,  H04W24/04 ,  H04W88/16

CPC classification number: H04L45/22 ,  H04L45/28 ,  H04W24/04 ,  H04W48/17 ,  H04W76/12 ,  H04W88/16

Abstract: A local mobility anchor (LMA) connected to a network receives session requests sent by first and second gateways on behalf of a mobile node seeking to establish a mobility session with the network. The LMA selects, based on a gateway selection criterion, either a first or a second gateway as active for actively handling the mobility session and the other gateway as standby. The LMA commands the active gateway to actively handle the mobility session and to configure the mobile node to use the active gateway for the mobility session. The LMA commands the standby gateway to not configure the mobile node and to operate in active standby to handle a failover of the mobility session from the primary gateway. The LMA establishes with the active gateway a first IP tunnel to be used for the mobility session.

公开(公告)号：US09763078B1

公开(公告)日：2017-09-12

申请号：US14793558

申请日：2015-07-07

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Wenxing Zheng ,  Kirk McBean ,  Srinath Gundavelli ,  Dhananjay Shrikrishna Patki

IPC: H04W4/00 ,  H04W8/12 ,  H04W8/18 ,  H04W36/08 ,  H04W88/16

CPC classification number: H04W8/12 ,  H04W36/0016 ,  H04W76/10 ,  H04W88/16

Abstract: A method provided in one embodiment includes receiving, at a packet gateway, a first binding update message from a mobile access gateway. The first binding update message has a destination address associated with a local mobility anchor. The method further includes extracting at least one session identifier associated with the mobile access gateway from the first binding update message, constructing an option field including the at least one session identifier, and appending the option field to the first binding update message to form a second binding update message. The method further includes sending the second binding update message to the local mobility anchor.