Patents by Inventor Uma S. Chunduri

Uma S. Chunduri 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).

  • Publication number: 20230300662
    Abstract: A mechanism is disclosed operating a transport network function (TNF) as part of a fifth generation wireless (5G) virtualized control plane. The mechanism includes receiving a request to compute a traffic engineering (TE) path in a 5G transport network for a packet data unit (PDU) session, the request received from a 5G virtualized control plane function via a service based interface (SBI) bus. Network topology information for the 5G transport network is obtained via a northbound interface (Nn). A TE path across the 5G transport network is computed for the PDU session based on the network topology information. A TE path identifier for the TE path computed for the PDU session is returned via the SBI bus.
    Type: Application
    Filed: December 1, 2022
    Publication date: September 21, 2023
    Inventors: Uma S. Chunduri, Renwei Li
  • Publication number: 20230231798
    Abstract: A computer-implemented method for processing a data packet in a network node includes determining a level of deterioration of a primary path between the network node and the destination node. The determined level of deterioration is based at least on a non-congestion-related loss for a primary link associated with one or more subsequent hops of the data packet from the network node toward the destination node along the primary path. Based on the determined level of deterioration of the primary path being above a threshold, the primary path is changed to an alternate path from the network node to the destination node. The data packet is forwarded to a next network node on the alternate path.
    Type: Application
    Filed: March 23, 2023
    Publication date: July 20, 2023
    Applicant: Futurewei Technologies, Inc.
    Inventors: Uma S. Chunduri, Stewart Bryant, Alexander Clemm, Toerless Eckert, Richard LI
  • Patent number: 11671517
    Abstract: A method is performed by a network element (NE) in a network implementing an Interior Gateway Protocol (IGP). The method comprises generating a message comprising a header and data, wherein the header comprises a length of the data prior to compressing the data, a length of the data after compressing the data, and a compression identifier, compressing the data based on a compression scheme identified by the compression identifier to obtain compressed data, and forwarding a compressed message comprising the header and the compressed data to another NE in the network.
    Type: Grant
    Filed: August 11, 2021
    Date of Patent: June 6, 2023
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Uma S. Chunduri, Toerless Eckert, Alvaro Retana
  • Patent number: 11632322
    Abstract: A method implemented by a network element (NE) in a network, comprising receiving, by the NE, preferred path route (PPR) information describing a PPR graph, the PPR graph representing a plurality of PPRs between an ingress NE and an egress NE in the network, and updating, by the NE, a forwarding database to include a forwarding entry for the egress NE in response to identifying the NE in the plurality of PPR-PDEs, the forwarding entry indicating a next hop by which to forward a data packet comprising the PPR-ID.
    Type: Grant
    Filed: December 3, 2020
    Date of Patent: April 18, 2023
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Toerless Eckert, Uma S. Chunduri, Yingzhen Qu
  • Patent number: 11621896
    Abstract: A mechanism is disclosed for performing network embedded real time service level objective (SLO) validation. The mechanism may be implemented by a network device including a processor configured to generate a data packet as part of a data flow, the data packet including a service level objective (SLO), the SLO indicating a network service threshold and including a key performance indicator (KPI), the KPI indicating a network service metric to be compared to the network service threshold; a transmitter coupled to the processor, the transmitter configured to transmit the data packet toward a network; and a receiver coupled to the processor, the receiver configured to receive a message, the message indicating to the network device whether a service provided by the network has met or violated the SLO.
    Type: Grant
    Filed: January 27, 2021
    Date of Patent: April 4, 2023
    Assignee: Futurewei Technologies, Inc.
    Inventors: Alexander Clemm, Uma S. Chunduri
  • Patent number: 11589291
    Abstract: A mechanism is disclosed for performing data plane based routing during a handover. The mechanism includes executing a user plane function (UPF). An uplink packet is received from a user equipment (UE) anchored to a fifth generation radio access network (5G) base station (gNB). The uplink packet includes a change destination command, a destination field, and metadata including a destination address for the uplink packet. A change destination command in the uplink packet is executed by setting the destination field of the uplink packet to the destination address in the metadata. The uplink packet is transmitted to the destination address set in the destination field.
    Type: Grant
    Filed: November 20, 2020
    Date of Patent: February 21, 2023
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Uma S. Chunduri, Alexander Clemm
  • Patent number: 11546793
    Abstract: A mechanism is disclosed operating a transport network function (TNF) as part of a fifth generation wireless (5G) virtualized control plane. The mechanism includes receiving a request to compute a traffic engineering (TE) path in a 5G transport network for a packet data unit (PDU) session, the request received from a 5G virtualized control plane function via a service based interface (SBI) bus. Network topology information for the 5G transport network is obtained via a northbound interface (Nn). A TE path across the 5G transport network is computed for the PDU session based on the network topology information. A TE path identifier for the TE path computed for the PDU session is returned via the SBI bus.
    Type: Grant
    Filed: January 8, 2021
    Date of Patent: January 3, 2023
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Uma S. Chunduri, Renwei Li
  • Patent number: 11533263
    Abstract: A Self-Describing Packet block (SDPB) is defined that allows concurrent processing of various fixed headers in a packet block defined to take advantage of multiple cores in a networking node forwarding path architecture. SPDB allows concurrent processing of various pieces of header data, metadata, and conditional commands carried in the same data packet by checking a serialization flag set upon creation of the data packet, without needing to serialize the processing or even parsing of the packet. When one or h more commands in one or more sub-blocks may be processed concurrently, the one or more commands are distributed to multiple processing resources for processing the commands in parallel. This architecture allows multiple unique functionalities each with their own separate outcome (execution of commands, doing service chaining, performing telemetry, allows virtualization and path steering) to be performed concurrently with simplified packet architecture without incurring additional encapsulation overhead.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: December 20, 2022
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Renwei Li, Uma S. Chunduri, Alexander Clemm, Kiran Makhijani, Yingzhen Qu
  • Patent number: 11502940
    Abstract: A method implemented by a network element (NE) in a network, comprising receiving, by the NE, an advertisement comprising preferred path route (PPR) information and backup PPR information, the PPR information describing a PPR between a source and a destination in the network, the backup PPR information describing a backup PPR between the source and the destination, the PPR information comprising a PPR identifier (PPR-ID) and a plurality of PPR description elements (PPR-PDEs) each representing an element on the PPR, updating, by the NE, a local forwarding database to include the PPR information and the backup PPR information in association with a destination address of the destination, and transmitting, by the NE, a data packet based on the backup PPR information instead of the PPR information in response to an element on the PPR being unavailable due to a failure of an element along the PPR.
    Type: Grant
    Filed: October 28, 2020
    Date of Patent: November 15, 2022
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Alvaro Retana, Uma S. Chunduri, Renwei Li, Toerless Eckert, Yingzhen Qu
  • Patent number: 11496388
    Abstract: A method implemented by a network element (NE) in a network receiving, by the NE, an advertisement comprising preferred path route (PPR) information describing a path from an ingress NE to an egress NE in the network, the PPR information comprising a PPR identifier (PPR-ID) and an attribute associated with a resource to be reserved on the PPR, transmitting, by the NE, the advertisement comprising the PPR-ID and the attribute associated with the resource to be reserved on the PPR to another NE in the network, and updating, by the NE, a local forwarding database to include the PPR information in association with the egress NE in response to the NE being identified in the PPR information.
    Type: Grant
    Filed: October 23, 2020
    Date of Patent: November 8, 2022
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Uma S. Chunduri, Renwei Li, Alvaro Retana, Alexander Clemm, Lin Han, Yingzhen Qu
  • Patent number: 11431630
    Abstract: A method implemented in a domain in a multi-domain network, comprising maintaining a link state database (LSDB) comprising information describing a topology of the domain, receiving, from a network element (NE) in an area of the domain, preferred path route (PPR) information describing a PPR from a source to a destination in the area, the PPR information comprising a PPR identifier (PPR-ID) and a plurality of PPR description elements (PPR-PDEs) each representing an element on the PPR, and constructing an end-to-end path between the source and the destination based on the PPR information.
    Type: Grant
    Filed: September 25, 2020
    Date of Patent: August 30, 2022
    Assignee: Huawei Technologies Co., Ltd.
    Inventor: Uma S. Chunduri
  • Publication number: 20220248321
    Abstract: A method for resolving an identifier of a path between a first user plane entity (UPE) and a second UPE includes receiving a translation request comprising a network slice selection assistance information (S-NSSAI), a first transport interface address, a second transport interface address, and one or more quality of service (QoS) parameters associated with the transport path between the first UPE and the second UPE; selecting the identifier of the transport path from a translation table in accordance with the S-NSSAI, the first transport interface address and the second transport interface address; and sending a translation response comprising an indicator of the identifier.
    Type: Application
    Filed: April 25, 2022
    Publication date: August 4, 2022
    Inventors: Kaippallimalil Mathew John, Uma S. Chunduri
  • Patent number: 11196666
    Abstract: A method implemented by a receiving host entity comprises transmitting, by a transmitter of the receiving host entity, an anonymized identifier of the receiving host entity, wherein the anonymized identifier is a temporary and recyclable identifier identifying the receiving host entity, and receiving, by a receiver of the receiving host entity, a data packet from a sending host entity, wherein the data packet includes the anonymized identifier.
    Type: Grant
    Filed: July 10, 2020
    Date of Patent: December 7, 2021
    Assignee: Futurewei Technologies, Inc.
    Inventors: Uma S. Chunduri, Alexander Clemm, Padmadevi Pillay-Esnault, Yingzhen Qu
  • Publication number: 20210377367
    Abstract: A method is performed by a network element (NE) in a network implementing an Interior Gateway Protocol (IGP).
    Type: Application
    Filed: August 11, 2021
    Publication date: December 2, 2021
    Inventors: Uma S. Chunduri, Toerless Eckert, Alvaro Retana
  • Publication number: 20210204162
    Abstract: A mechanism is disclosed operating a transport network function (TNF) as part of a fifth generation wireless (5G) virtualized control plane. The mechanism includes receiving a request to compute a traffic engineering (TE) path in a 5G transport network for a packet data unit (PDU) session, the request received from a 5G virtualized control plane function via a service based interface (SBI) bus. Network topology information for the 5G transport network is obtained via a northbound interface (Nn). A TE path across the 5G transport network is computed for the PDU session based on the network topology information. A TE path identifier for the TE path computed for the PDU session is returned via the SBI bus.
    Type: Application
    Filed: January 8, 2021
    Publication date: July 1, 2021
    Inventors: Uma S. Chunduri, Renwei Li
  • Publication number: 20210184944
    Abstract: A mechanism is disclosed for performing network embedded real time service level objective (SLO) validation. The mechanism may be implemented by a network device including a processor configured to generate a data packet as part of a data flow, the data packet including a service level objective (SLO), the SLO indicating a network service threshold and including a key performance indicator (KPI), the KPI indicating a network service metric to be compared to the network service threshold; a transmitter coupled to the processor, the transmitter configured to transmit the data packet toward a network; and a receiver coupled to the processor, the receiver configured to receive a message, the message indicating to the network device whether a service provided by the network has met or violated the SLO.
    Type: Application
    Filed: January 27, 2021
    Publication date: June 17, 2021
    Inventors: Alexander Clemm, Uma S. Chunduri
  • Patent number: 11038791
    Abstract: Techniques for exposing maximum node and/or link segment identifier depth using OSPF are described. A network element in a Segment Routing (SR) network transmits a Type Length Value (TLV) element including a Maximum Segment Identifier Depth (MSD) value utilizing OSPF. The MSD value identifies a maximum number of segment identifier (SID) labels that the network element is able to push into packet headers of received packets to enable forwarding of the received packets through the SR network. The network element receives, from a controller, data for a path to be utilized by the network element for forwarding the received packets through the SR network. The data includes one or more SID labels to be pushed into the received packets, and the SID labels have fewer than or equal to the MSD value. The controller and the network element do not utilize Path Computation Element Protocol (PCEP) over a southbound interface.
    Type: Grant
    Filed: April 1, 2016
    Date of Patent: June 15, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Evgeny Tantsura, Uma S. Chunduri
  • Publication number: 20210176168
    Abstract: A method implemented by a network element (NE) in a network, comprising receiving, by the NE, preferred path route (PPR) information comprising a PPR identifier (PPR-ID) and a plurality of PPR-Path Description Elements (PPR-PDEs), wherein a PPR-PDE describing the egress NE comprises a destination flag, an anycast PPR-ID, and an anycast group PPR-ID associated with the egress NE, and updating, by the NE, a forwarding database to include a forwarding entry for the egress NE, wherein the forwarding entry includes the PPR-ID, the anycast PPR-ID, and the anycast group PPR-ID, and wherein the forwarding entry indicates a next element on the PPR graph by which to forward an anycast data packet comprising the anycast PPR-ID.
    Type: Application
    Filed: February 17, 2021
    Publication date: June 10, 2021
    Inventors: Toerless Eckert, Uma S. Chunduri, Yingzhen Qu
  • Patent number: 11005751
    Abstract: Techniques for exposing maximum node and/or link segment identifier depth using IS-IS are described. A network element in a Segment Routing (SR) network transmits a Type Length Value (TLV) element including a Maximum Segment Identifier Depth (MSD) value. The MSD value identifies a maximum number of segment identifier (SID) labels that the network element is able to push into packet headers of received packets to enable forwarding of the received packets through the SR network. The network element receives, from a controller, data for a path to be utilized by the network element for forwarding the received packets through the SR network. The data includes one or more SID labels to be pushed into the received packets, and the SID labels include fewer than or equal to the MSD value. The controller and the network element do not utilize the Path Computation Element Protocol (PCEP) over a southbound interface.
    Type: Grant
    Filed: April 1, 2016
    Date of Patent: May 11, 2021
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Evgeny Tantsura, Uma S. Chunduri
  • Patent number: 10972397
    Abstract: A mechanism is disclosed for implementing conditional commands carried by network data packets. A data flow including a data packet is received. The data packet includes a conditional command. A condition and a command are obtained from the conditional command. The mechanism determines that the condition is satisfied. Based on the determination that the condition is satisfied, the command is executed to alter handling of the data flow, alter handling of the data packet, or alter a context for the data flow.
    Type: Grant
    Filed: September 7, 2018
    Date of Patent: April 6, 2021
    Assignee: Futurewei Technologies, Inc.
    Inventors: Renwei Li, Alexander Clemm, Uma S. Chunduri, Kiran Makhijani