公开(公告)号：US20240172035A1

公开(公告)日：2024-05-23

申请号：US18427200

申请日：2024-01-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Uma S. Chunduri ,  Renwei Li

IPC: H04W28/02 ,  H04W28/08 ,  H04W28/10 ,  H04W40/02 ,  H04W40/24

CPC classification number: H04W28/0263 ,  H04W28/0992 ,  H04W28/10 ,  H04W40/02 ,  H04W40/246

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.

公开(公告)号：US11770329B2

公开(公告)日：2023-09-26

申请号：US16997427

申请日：2020-08-19

Applicant: HUAWEI TECHNOLOGIES CO., LTD

Inventor： Uma S. Chunduri ,  Alexander Clemm ,  Yingzhen Qu ,  Renwei Li ,  Kiran Makhijani ,  Lin Han

IPC: H04L45/00 ,  H04L45/122 ,  H04L45/50 ,  H04L45/741 ,  H04L45/745

CPC classification number: H04L45/34 ,  H04L45/122 ,  H04L45/50 ,  H04L45/741 ,  H04L45/745

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 representing a PPR from a source to a destination in the network, 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, receiving, by the NE, a data packet comprising the PPR-ID, and forwarding, by the NE, the data packet having the PPR-ID to a next element on the PPR based on the plurality of PPR-PDEs.

公开(公告)号：US20230300662A1

公开(公告)日：2023-09-21

申请号：US18073234

申请日：2022-12-01

Applicant: Huawei Technologies Co., Ltd.

Inventor： Uma S. Chunduri ,  Renwei Li

IPC: H04W28/02 ,  H04W28/08 ,  H04W28/10 ,  H04W40/02 ,  H04W40/24

CPC classification number: H04W28/0263 ,  H04W28/0992 ,  H04W28/10 ,  H04W40/02 ,  H04W40/246

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.

公开(公告)号：US20220248321A1

公开(公告)日：2022-08-04

申请号：US17728429

申请日：2022-04-25

Applicant: Huawei Technologies Co., Ltd.

Inventor： Kaippallimalil Mathew John ,  Uma S. Chunduri

IPC: H04W48/18 ,  H04W28/02 ,  H04L69/164 ,  H04L41/0895

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.

公开(公告)号：US11943136B2

公开(公告)日：2024-03-26

申请号：US17177469

申请日：2021-02-17

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Toerless Eckert ,  Uma S. Chunduri ,  Yingzhen Qu

IPC: H04L45/00 ,  H04L45/02 ,  H04L45/24 ,  H04L45/302 ,  H04L45/52 ,  H04L45/745

CPC classification number: H04L45/34 ,  H04L45/02 ,  H04L45/22 ,  H04L45/24 ,  H04L45/302 ,  H04L45/52 ,  H04L45/745

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.

公开(公告)号：US11589291B2

公开(公告)日：2023-02-21

申请号：US17100537

申请日：2020-11-20

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Uma S. Chunduri ,  Alexander Clemm

IPC: H04W40/36 ,  H04L1/16 ,  H04W36/02 ,  H04W36/08 ,  H04L1/1607

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.

公开(公告)号：US11533263B2

公开(公告)日：2022-12-20

申请号：US16651778

申请日：2018-09-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Renwei Li ,  Uma S. Chunduri ,  Alexander Clemm ,  Kiran Makhijani ,  Yingzhen Qu

IPC: H04L47/24 ,  H04L45/00 ,  H04L45/02 ,  H04L47/2441 ,  H04L47/32 ,  H04L47/76 ,  H04L49/00 ,  H04L69/22 ,  H04L47/2483 ,  H04L47/35

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.

公开(公告)号：US11496388B2

公开(公告)日：2022-11-08

申请号：US17078838

申请日：2020-10-23

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Uma S. Chunduri ,  Renwei Li ,  Alvaro Retana ,  Alexander Clemm ,  Lin Han ,  Yingzhen Qu

IPC: H04L45/12 ,  H04L45/02 ,  H04L45/00 ,  H04L45/745 ,  H04L47/72 ,  H04L43/08 ,  H04L45/44

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.

公开(公告)号：US20210083975A1

公开(公告)日：2021-03-18

申请号：US17033191

申请日：2020-09-25

Applicant: HUAWEI TECHNOLOGIES CO, LTD.

Inventor： Uma S. Chunduri

IPC: H04L12/749 ,  H04L12/751 ,  H04L12/727

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.

公开(公告)号：US20200244582A1

公开(公告)日：2020-07-30

申请号：US16651778

申请日：2018-09-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Renwei Li ,  Uma S. Chunduri ,  Alexander Clemm ,  Kiran Makhijani ,  Yingzhen Qu

IPC: H04L12/833 ,  H04L12/721 ,  H04L12/751 ,  H04L12/733 ,  H04L12/851 ,  H04L12/823 ,  H04L12/917 ,  H04L12/935 ,  H04L29/06

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.