Patents by Inventor Sangram Kishore Lakkaraju
Sangram Kishore Lakkaraju has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240080223Abstract: Techniques are described for extending a cellular quality of service bearer through an enterprise fabric network. In one example, a method obtaining, by a first switch of a network, a packet to be delivered to a client connected to the network via a cellular access point; identifying quality of service (QoS) bearer information associated with the packet, wherein the QoS bearer information is associated with a radio access bearer for the client and the QoS bearer information comprises a bearer indicator and a QoS class identifier; providing a fabric tunnel encapsulation for the packet, wherein the bearer indicator and the QoS class identifier are included within the fabric tunnel encapsulation of the packet; and forwarding the packet within the fabric tunnel encapsulation toward a second switch of the network via a fabric tunnel, wherein the cellular access point is connected to the network via the second switch.Type: ApplicationFiled: October 30, 2023Publication date: March 7, 2024Inventors: Srinath Gundavelli, Sangram Kishore Lakkaraju, Alberto Rodriguez Natal, Fabio R. Maino, Timothy Peter Stammers
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Patent number: 11910491Abstract: A first data plane is established between a user equipment device and a gateway device, wherein the user equipment device comprises a 3rd Generation Partnership Project (3GPP) user equipment device, and wherein the first data plane comprises a 3GPP data plane. A second data plane is established between the gateway device and an anchor device, wherein the second data plane comprises a Proxy Mobile Internet Protocol version 6 (PMIPv6) data plane. Mobility management is performed for the user equipment device via communications between the gateway device and the anchor device.Type: GrantFiled: January 7, 2021Date of Patent: February 20, 2024Assignee: CISCO TECHNOLOGY, INC.Inventors: Srinath Gundavelli, Sangram Kishore Lakkaraju, Vimal Srivastava, Oliver James Bull
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Publication number: 20240031879Abstract: A method is provided for avoiding context transfers by a first Access and Mobility Management Function (AMF) connected to a first gNB to a second AMF when a user equipment (UE) in idle mode moves from the first gNB to a second gNB. The method may include provisioning the first AMF and the second AMF with the same tracking area identity (TAI), the first AMF and the second AMF s being connected to a respective enterprise gNB. The method may also include configuring the 5G packet core network comprising a session management function (SMF) in communications with the first AMF and the second AMF, to avoid transferring a UE context from the first AMF to the second AMF when the user equipment (UE) in the idle mode moves from a first AMF to the second AMF. The UE context remains with the first AMF.Type: ApplicationFiled: October 3, 2023Publication date: January 25, 2024Inventors: Anal Srivastava, Sangram Kishore Lakkaraju
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Patent number: 11871479Abstract: Techniques are described to provide for authentication and subscription management that are decoupled from a Home Subscriber Server (HSS).Type: GrantFiled: October 28, 2022Date of Patent: January 9, 2024Assignee: CISCO TECHNOLOGY, INC.Inventors: Srinath Gundavelli, Sangram Kishore Lakkaraju, Mark Grayson, Louis Gwyn Samuel, Timothy Peter Stammers
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Patent number: 11825361Abstract: A target Access and Mobility Management Function (AMF) switches the path for network traffic to a User Equipment (UE) in an inter-AMF mobility event. The target AMF obtains a path switch request from a target next generation Node B (gNB). The path switch request includes a UE identifier and a source AMF identifier. The target AMF compares the source AMF identifier with a target AMF identifier, and responsive to a determination that the source AMF identifier is different than the target AMF identifier, the target AMF provides a UE context transfer request to the source AMF. The target AMF obtains the UE context from the source AMF and processes the path switch request to update a core network path for a session of the UE. The target AMF also provides a path switch response to the target gNB.Type: GrantFiled: November 8, 2021Date of Patent: November 21, 2023Assignee: CISCO TECHNOLOGY, INC.Inventors: Anal Srivastava, Sangram Kishore Lakkaraju
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Patent number: 11811557Abstract: Techniques are described for extending a cellular quality of service bearer through an enterprise fabric network. In one example, a method obtaining, by a first switch of a network, a packet to be delivered to a client connected to the network via a cellular access point; identifying quality of service (QoS) bearer information associated with the packet, wherein the QoS bearer information is associated with a radio access bearer for the client and the QoS bearer information comprises a bearer indicator and a QoS class identifier; providing a fabric tunnel encapsulation for the packet, wherein the bearer indicator and the QoS class identifier are included within the fabric tunnel encapsulation of the packet; and forwarding the packet within the fabric tunnel encapsulation toward a second switch of the network via a fabric tunnel, wherein the cellular access point is connected to the network via the second switch.Type: GrantFiled: September 21, 2022Date of Patent: November 7, 2023Assignee: CISCO TECHNOLOGY, INC.Inventors: Srinath Gundavelli, Sangram Kishore Lakkaraju, Alberto Rodriguez Natal, Fabio R. Maino, Timothy Peter Stammers
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Patent number: 11800346Abstract: A first access and mobility management function (AMF) in a network receives, from user equipment (UE), a registration request listing a first network slice and a second network slice. Upon determining that the first AMF supports the first, but not the second, network slice, the first AMF causes selection of (i) the first AMF as a session and mobility management (SM)-AMF to perform mobility management, and first session management signaling for the first network slice; and (ii) a second AMF as a session management only (SO)-AMF to perform only second session management signaling for the second network slice. The first AMF, acting as SM-AMF, performs the first session management signaling for a first data session on the first network slice, while the second AMF, acting as SO-AMF, performs only the second session management signaling for a second data session on the second network slice.Type: GrantFiled: June 25, 2021Date of Patent: October 24, 2023Assignee: CISCO TECHNOLOGY, INC.Inventors: Vimal Srivastava, Sangram Kishore Lakkaraju, Anal Srivastava, Srinath Gundavelli
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Patent number: 11785509Abstract: A method is provided for avoiding context transfers by a first Access and Mobility Management Function (AMF) connected to a first gNB to a second AMF when a user equipment (UE) in idle mode moves from the first gNB to a second gNB. The method may include provisioning the first AMF and the second AMF with the same tracking area identity (TAI), the first AMF and the second AMF s being connected to a respective enterprise gNB. The method may also include configuring the 5G packet core network comprising a session management function (SMF) in communications with the first AMF and the second AMF, to avoid transferring a UE context from the first AMF to the second AMF when the user equipment (UE) in the idle mode moves from a first AMF to the second AMF. The UE context remains with the first AMF.Type: GrantFiled: November 18, 2021Date of Patent: October 10, 2023Assignee: Cisco Technology, Inc.Inventors: Anal Srivastava, Sangram Kishore Lakkaraju
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Patent number: 11659480Abstract: Systems and methods for providing access prioritization to a private Long Term Evolution (LTE) network operating in a Citizens Broadband Radio Service (CBRS) spectrum include receiving, at a network device of the private Long Term Evolution (LTE) network, a functional group associated with a user equipment (UE) and a traffic load of a cell of the private LTE network associated with the UE. An access priority associated with the functional group and the traffic load is determined and provided to a CBRS access point (AP) which controls access to the cell. The access priority indicates to the CBRS AP a priority with which the UE is allowed to access the cell and can include a high priority, a low priority, or no access indication.Type: GrantFiled: August 25, 2021Date of Patent: May 23, 2023Assignee: Cisco Technology, Inc.Inventors: Vimal Srivastava, Indermeet Singh Gandhi, Sangram Kishore Lakkaraju, Sri Gundavelli
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Publication number: 20230156532Abstract: A method is provided for avoiding context transfers by a first Access and Mobility Management Function (AMF) connected to a first gNB to a second AMF when a user equipment (UE) in idle mode moves from the first gNB to a second gNB. The method may include provisioning the first AMF and the second AMF with the same tracking area identity (TAI), the first AMF and the second AMF s being connected to a respective enterprise gNB. The method may also include configuring the 5G packet core network comprising a session management function (SMF) in communications with the first AMF and the second AMF, to avoid transferring a UE context from the first AMF to the second AMF when the user equipment (UE) in the idle mode moves from a first AMF to the second AMF. The UE context remains with the first AMF.Type: ApplicationFiled: November 18, 2021Publication date: May 18, 2023Inventors: Anal Srivastava, Sangram Kishore Lakkaraju
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Publication number: 20230143182Abstract: A target Access and Mobility Management Function (AMF) switches the path for network traffic to a User Equipment (UE) in an inter-AMF mobility event. The target AMF obtains a path switch request from a target next generation Node B (gNB). The path switch request includes a UE identifier and a source AMF identifier. The target AMF compares the source AMF identifier with a target AMF identifier, and responsive to a determination that the source AMF identifier is different than the target AMF identifier, the target AMF provides a UE context transfer request to the source AMF. The target AMF obtains the UE context from the source AMF and processes the path switch request to update a core network path for a session of the UE. The target AMF also provides a path switch response to the target gNB.Type: ApplicationFiled: November 8, 2021Publication date: May 11, 2023Inventors: Anal Srivastava, Sangram Kishore Lakkaraju
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Publication number: 20230115560Abstract: Techniques are described to provide for authentication and subscription management that are decoupled from a Home Subscriber Server (HSS).Type: ApplicationFiled: October 28, 2022Publication date: April 13, 2023Inventors: Srinath Gundavelli, Sangram Kishore Lakkaraju, Mark Grayson, Louis Gwyn Samuel, Timothy Peter Stammers
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Patent number: 11582066Abstract: Techniques are described for extending a cellular quality of service bearer through an enterprise fabric network. In one example, a method obtaining, by a first switch of a network, a packet to be delivered to a client connected to the network via a cellular access point; identifying quality of service (QoS) bearer information associated with the packet, wherein the QoS bearer information is associated with a radio access bearer for the client and the QoS bearer information comprises a bearer indicator and a QoS class identifier; providing a fabric tunnel encapsulation for the packet, wherein the bearer indicator and the QoS class identifier are included within the fabric tunnel encapsulation of the packet; and forwarding the packet within the fabric tunnel encapsulation toward a second switch of the network via a fabric tunnel, wherein the cellular access point is connected to the network via the second switch.Type: GrantFiled: December 19, 2019Date of Patent: February 14, 2023Assignee: CISCO TECHNOLOGY, INC.Inventors: Srinath Gundavelli, Sangram Kishore Lakkaraju, Alberto Rodriguez Natal, Fabio R. Maino, Timothy Peter Stammers
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Publication number: 20230026450Abstract: Techniques are described for extending a cellular quality of service bearer through an enterprise fabric network. In one example, a method obtaining, by a first switch of a network, a packet to be delivered to a client connected to the network via a cellular access point; identifying quality of service (QoS) bearer information associated with the packet, wherein the QoS bearer information is associated with a radio access bearer for the client and the QoS bearer information comprises a bearer indicator and a QoS class identifier; providing a fabric tunnel encapsulation for the packet, wherein the bearer indicator and the QoS class identifier are included within the fabric tunnel encapsulation of the packet; and forwarding the packet within the fabric tunnel encapsulation toward a second switch of the network via a fabric tunnel, wherein the cellular access point is connected to the network via the second switch.Type: ApplicationFiled: September 21, 2022Publication date: January 26, 2023Inventors: Srinath Gundavelli, Sangram Kishore Lakkaraju, Alberto Rodriguez Natal, Fabio R. Maino, Timothy Peter Stammers
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Publication number: 20220417726Abstract: A first access and mobility management function (AMF) in a network receives, from user equipment (UE), a registration request listing a first network slice and a second network slice. Upon determining that the first AMF supports the first, but not the second, network slice, the first AMF causes selection of (i) the first AMF as a session and mobility management (SM)-AMF to perform mobility management, and first session management signaling for the first network slice; and (ii) a second AMF as a session management only (SO)-AMF to perform only second session management signaling for the second network slice. The first AMF, acting as SM-AMF, performs the first session management signaling for a first data session on the first network slice, while the second AMF, acting as SO-AMF, performs only the second session management signaling for a second data session on the second network slice.Type: ApplicationFiled: June 25, 2021Publication date: December 29, 2022Inventors: Vimal Srivastava, Sangram Kishore Lakkaraju, Anal Srivastava, Srinath Gundavelli
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Patent number: 11540109Abstract: Techniques are described to provide for authentication and subscription management that are decoupled from a Home Subscriber Server (HSS).Type: GrantFiled: June 9, 2020Date of Patent: December 27, 2022Assignee: CISCO TECHNOLOGY, INC.Inventors: Srinath Gundavelli, Sangram Kishore Lakkaraju, Mark Grayson, Louis Gwyn Samuel, Timothy Peter Stammers
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Publication number: 20220217815Abstract: A first data plane is established between a user equipment device and a gateway device, wherein the user equipment device comprises a 3rd Generation Partnership Project (3GPP) user equipment device, and wherein the first data plane comprises a 3GPP data plane. A second data plane is established between the gateway device and an anchor device, wherein the second data plane comprises a Proxy Mobile Internet Protocol version 6 (PMIPv6) data plane. Mobility management is performed for the user equipment device via communications between the gateway device and the anchor device.Type: ApplicationFiled: January 7, 2021Publication date: July 7, 2022Inventors: Srinath Gundavelli, Sangram Kishore Lakkaraju, Vimal Srivastava, Oliver James Bull
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Patent number: 11303558Abstract: Low latency wireless communications may be provided. A client device may be authorized for a first association in response to the client device making a first concurrent association request that may include a first Media Access Control (MAC) address. In response to authorizing the client device for the first association, an Endpoint Identifier (EID) associated with the client device may be registered with a first Routing Locator (RLOC) in a map server, the first RLOC being associated with the first MAC address. The client device may then be authorized for a second association in response to the client device making a second concurrent association request that includes a second MAC address. In response to authorizing the client device for the second association, the EID associated with the client device may be registered with a second RLOC in the map server, the second RLOC being associated with the second MAC address.Type: GrantFiled: January 8, 2020Date of Patent: April 12, 2022Assignee: CISCO TECHNOLOGY, INC.Inventors: Srinath Gundavelli, Alberto Rodriguez Natal, Fabio R. Maino, Pradeep Kumar Kathail, Sangram Kishore Lakkaraju
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Patent number: 11284462Abstract: Techniques are described for integrating cellular access within an enterprise fabric. In one example, a method includes obtaining, by a cellular termination function via a cellular access point, a request from a client for data plane connectivity via a network, wherein the cellular access point is registered within the network and is in communication with a first switch of the network; obtaining, by the cellular termination function, cellular policy information and enterprise policy information for the client; obtaining, by the cellular termination function, an Internet Protocol (IP) address for the client; and establishing data plane connectivity for the client with the network via the cellular access point, the first switch of the network, and a second switch of the network based, at least in part, on the IP address for the client, wherein the second switch connects the network with one or more data networks.Type: GrantFiled: December 17, 2019Date of Patent: March 22, 2022Assignee: CISCO TECHNOLOGY, INC.Inventors: Louis Gwyn Samuel, Srinath Gundavelli, Oliver James Bull, Mark Grayson, Sangram Kishore Lakkaraju, Shree N. Murthy
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Patent number: 11234182Abstract: Techniques are provided for downlink packet replication to support handovers. In one example, downlink packet replication occurs on a fabric node in an S1AP handover scenario. In another example, downlink packet replication occurs on a source Access Point (AP) using a target AP as a secondary AP in an S1AP handover scenario. In yet another example, downlink packet replication occurs on a source AP using packet encapsulation in an S1AP handover scenario. In still another example, downlink packet replication occurs on a source AP in an X2 handover scenario. Similar techniques are provided for any suitable telecommunications/cellular technology.Type: GrantFiled: July 14, 2020Date of Patent: January 25, 2022Assignee: CISCO TECHNOLOGY, INC.Inventors: Srinath Gundavelli, Sangram Kishore Lakkaraju, Mark Grayson, Oliver James Bull, Louis Gwyn Samuel