Huawei Technologies Co., Limited

University of Electronic Science and Technology of China

Huiying Xu

Fatai Zhang

Qiming Li

Jun Wu

Liang Zhang

Yi Lin

Xinyu Hu

Jianfei He

Xiaobing Zi

Yongliang Xu

Hongfang Yu

Xianlong Luo

Hongmiao Xia

Qingzhi Liu

Cai Lu

Hongbin Luo

Lemin Li

Yuanming Zheng

A data stream classification model updating method is disclosed. Determining, based on packet information of a current data stream and a behavior classification model, a first data stream class corresponding to the current data stream; determining, based on a target correspondence and a common feature of the current data stream, a second data stream class corresponding to the current data stream, where the target correspondence is a correspondence between a plurality of common features and a plurality of data stream classes; and if the first data stream class is different from the second data stream class, obtaining correction data corresponding to the current data stream, where the correction data includes the packet information of the current data stream and the second data stream class, and the correction data is used as a training sample to update the behavior classification model.

Data stream classification model updating method and related device

A method, device, and system for multiplexing and mapping optical signals and demultiplexing and demapping optical signals are provided. The method for multiplexing and mapping optical signals includes the following steps: A label object that indicates a multiplexing and mapping relation is acquired. The label object includes a label and a label header. The label includes a type indication field and a TS indication field. The label object predefines a multiplexing and mapping policy about a first optical signal on a first optical channel and a second optical signal on a second optical channel. The first optical signal is multiplexed and mapped to the second optical signal according to the multiplexing and mapping policy. Therefore, when optical signals are multiplexed and mapped and are demultiplexed and demapped, so that an advantage of saving signaling overhead is realized.

Method, device, and system for multiplexing and mapping optical signals and demultiplexing and demapping optical signals

A method for realizing service protection in the automatically switched optical network includes following steps: after any defect occurs on the working paths that carry the service, the first node and the last node of the working paths sends the requests to restore the paths setup in opposite directions, respectively; at least one intermediate node in the restoration path establishes a connection according to the restoration path setup request, and forwards the restoration path setup request hop by hop, until the setup of the recovering path is finished; the service is switched from the working paths to the restoration paths. A system for realizing service protection and a node device in an ASON is also provided. The paths restoration process can be faster obviously using this invention, and the restoration time can be shortened, and the work efficiency and reliability can be improved, and the service can be ensured to be restored.

Method, system and node device for realizing service protection in automatically switched optical network

The present invention discloses a method for identifying node reachability, a method for identifying a link, a method for calculating a routing, and a method for disseminating node address information. In the method of the node address information dissemination, when the network is initiated, each node in the automatically switched optical network performs a node address aggregation process and an aggregation address dissemination process, and obtains and stores the aggregation address respectively. Therefore, any node in the network may judge whether the node and another node in the network are reachable to each other, and may further calculate the routing between the source and destination nodes pair. Moreover, the present invention also may determine whether any traffic engineering link in the multi-level ASON network is an external link or an internal link.

Method for identifying node reachability, method for identifying whether a link is an external link, method for calculating a routing, and method for disseminating node address information

A method and system for multi-domain route computation. In the invention, Path Computation Elements (PCEs) are placed in different layers and computation domains between upper and lower layer PCEs are mapped so that a computation task is divided into multiple computation tasks layer by layer and that the multi-domain route computation is finally fulfilled. The invention separates route computation from signaling and runs route computation tasks in parallel. Route establishment is done by signaling after route computation. The present invention may realize route computation based on complex Traffic Engineering (TE) constraints and enable end-to-end diverse route computation. The invention places PCEs in layers, allowing good scalability and high computation efficiency. The present invention is applicable to the Automatically Switched Optical Network (ASON) and the Multi-Protocol Label Switched Network Traffic Engineering (MPLS-TE) network.

Method and system for multi-domain route computation

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Shenzhen, China

Huiying Xu