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公开(公告)号：US11533121B2
公开(公告)日：2022-12-20
申请号：US17206524
申请日：2021-03-19
Applicant: Huawei Technologies Co., Ltd.
Inventor： Renwei Li , Kiran Makhijani , Lijun Dong
IPC: H04L1/00 , H04L69/324
Abstract: A method for communicating a data packet, the method includes receiving a data packet that supports a packet wash operation. The method determines whether the data packet can be forwarded along a network path towards a destination node without any modification. If the data packet cannot be forwarded along the network path towards the destination node without modification, the method determines whether conditions are met for performing the packet wash operation on the data packet. If the conditions are met, the packet wash operation is performed to generate a washed data packet. The packet wash operation generates the washed data packet by modifying a size of a payload of the data packet based on a packet wash specification that associates attributes to a plurality of data payload portions of the payload of the data packet. The washed data packet is forwarded along the network path towards the destination node.
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公开(公告)号：US20230163875A1
公开(公告)日：2023-05-25
申请号：US17991397
申请日：2022-11-21
Applicant: Huawei Technologies Co., Ltd.
Inventor： Renwei Li , Kiran Makhijani , Lijun Dong
IPC: H04L1/00 , H04L69/324
CPC classification number: H04L1/0007 , H04L69/324
Abstract: A method for communicating a data packet, the method includes receiving a data packet that supports a packet wash operation. The method determines whether the data packet can be forwarded along a network path towards a destination node without any modification. If the data packet cannot be forwarded along the network path towards the destination node without modification, the method determines whether conditions are met for performing the packet wash operation on the data packet. If the conditions are met, the packet wash operation is performed to generate a washed data packet. The packet wash operation generates the washed data packet by modifying a size of a payload of the data packet based on a packet wash specification that associates attributes to a plurality of data payload portions of the payload of the data packet. The washed data packet is forwarded along the network path towards the destination node.
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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.
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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
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.
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公开(公告)号：US20210211220A1
公开(公告)日：2021-07-08
申请号：US17206524
申请日：2021-03-19
Applicant: Huawei Technologies Co., Ltd.
Inventor： Renwei Li , Kiran Makhijani , Lijun Dong
Abstract: A method for communicating a data packet, the method includes receiving a data packet that supports a packet wash operation. The method determines whether the data packet can be forwarded along a network path towards a destination node without any modification. If the data packet cannot be forwarded along the network path towards the destination node without modification, the method determines whether conditions are met for performing the packet wash operation on the data packet. If the conditions are met, the packet wash operation is performed to generate a washed data packet. The packet wash operation generates the washed data packet by modifying a size of a payload of the data packet based on a packet wash specification that associates attributes to a plurality of data payload portions of the payload of the data packet. The washed data packet is forwarded along the network path towards the destination node.
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Patent Agency Ranking
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.
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公开(公告)号：US12231945B2
公开(公告)日：2025-02-18
申请号：US18427200
申请日：2024-01-30
Applicant: Huawei Technologies Co., Ltd.
Inventor： Uma S. Chunduri , Renwei Li
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.
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公开(公告)号：US12047477B2
公开(公告)日：2024-07-23
申请号：US17008347
申请日：2020-08-31
Applicant: Huawei Technologies Co., Ltd.
Inventor： Alexander Clemm , Uma S. Chunduri , Renwei Li
CPC classification number: H04L69/22 , H04L45/74 , G06F3/061 , G06F3/0659 , G06F3/067
Abstract: A network device includes a statelet storage storing statelets that retain state information associated with a packet flow through the network device and that the network device can interact with to control processing performed on packets of the data flow. The network device implements a set of instructions that interpret commands in the data packets to manage and interact with statelets. The statelets in the statelet storage are organized by a statelet key that is derived from information identifying the packet flow. Responsive to the commands in the packets, the network device can create, read, write, or delete statelets from the statelet storage. The statelet storage includes multiple statelets each statelet including multiple fields. The network device may access the statelets to control/monitor a packet flow using information in a network data plane without receiving control information from a network control plane.
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公开(公告)号：US11502940B2
公开(公告)日：2022-11-15
申请号：US17083039
申请日：2020-10-28
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Alvaro Retana , Uma S. Chunduri , Renwei Li , Toerless Eckert , Yingzhen Qu
IPC: H04L45/00 , H04L45/021 , H04L45/28
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.
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公开(公告)号：US20210204162A1
公开(公告)日：2021-07-01
申请号：US17144555
申请日：2021-01-08
Applicant: Huawei Technologies Co., Ltd.
Inventor： Uma S. Chunduri , Renwei Li
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.
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