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公开(公告)号：US11374848B2
公开(公告)日：2022-06-28
申请号：US17080447
申请日：2020-10-26
Applicant: Huawei Technologies Co., Ltd.
Inventor： Alvaro Retana , Renwei Li , Yingzhen Qu
Abstract: A method of routing a data packet through a network comprises updating at least one router local forwarding table to include path IDs of network segments defining paths between network nodes and network function bit encoding/decoding information. In response to a data packet arriving at an ingress network node, an encapsulation header including a path ID identifying at least one network segment of an explicit routing path and a bit encoding specifying network functions to be performed on the data packet are encapsulated in unused portions of the source address and/or the destination address in the encapsulation header. A network node in the explicit routing path performs a network function encoded in the source address and/or the destination address of the encapsulation header of the data packet and forwards the data packet based on network function bit encoding/decoding and path ID information in the network node's local updated local forwarding table.
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公开(公告)号：US12255737B2
公开(公告)日：2025-03-18
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
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：US20250023822A1
公开(公告)日：2025-01-16
申请号：US18900394
申请日：2024-09-27
Applicant: Huawei Technologies Co., Ltd.
Inventor： Lijun DONG , Renwei Li
IPC: H04L47/125 , H04L45/12 , H04L45/745
Abstract: A method for routing data traffic in a communication network includes decoding, by a source node, an Internet protocol (IP) data packet to determine a destination node. A routing table for the destination node is retrieved. The routing table identifies a plurality of next-hop nodes associated with a corresponding plurality of routing paths to the destination node. A plurality of saturation metrics corresponding to the plurality of routing paths are determined using the routing table. Each of the plurality of saturation metrics is indicative of data traffic saturation along a corresponding one of the plurality of routing paths. A routing path is selected from the plurality of routing paths based on the plurality of saturation metrics. The IP data packet is forwarded to a next-hop node in the selected routing path.
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公开(公告)号：US20240422098A1
公开(公告)日：2024-12-19
申请号：US18814288
申请日：2024-08-23
Applicant: Huawei Technologies Co., Ltd.
Inventor： Lijun DONG , Renwei Li
Abstract: A computer-implemented method for video data communication in a network includes receiving, by a node in the network, an Internet protocol (IP) data packet. The IP data packet includes an IP network layer header and an IP network layer payload. The IP network layer payload is parsed, by the node, to detect a Network Abstraction Layer Unit (NALU). The NALU includes a NALU header and a NALU payload. Priority information in the NALU header is detected by the node. The priority information indicates a transport priority of the NALU. A differentiated services (DS) field in the IP network layer header is updated based on the transport priority to generate an updated IP data packet. The updated IP data packet is forwarded to a second node in the network for discarding or processing based on the updated DS field.
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公开(公告)号：US11546793B2
公开(公告)日：2023-01-03
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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Patent Agency Ranking
公开(公告)号：US20200382415A1
公开(公告)日：2020-12-03
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: H04L12/721 , H04L12/749 , H04L12/723 , H04L12/733 , H04L12/741
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.
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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
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.
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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.
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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
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.
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公开(公告)号：US20230057487A1
公开(公告)日：2023-02-23
申请号：US17970944
申请日：2022-10-21
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Renwei Li , Kiran Makhijani , Lijun Dong
IPC: H04L45/741 , H04W40/24
Abstract: The present technology discloses data communication in a network. A node in the network receives an internet protocol (IP) data packet. The IP data packet has a header and a payload. The node performs actions on the IP data packet based on specifications in the header of the IP data packet. The node then forwards the IP data packet based on the specifications in the header of the IP data packet to a next hop node in the network.
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