Huawei Technologies Co., Limited

Xiaobing Zi

Qiuyou Wu

Ning Liu

Ying Hu

Yi Lin

Fatai Zhang

Jianrui Han

Huiying Xu

Chuanjun Wu

The present invention discloses a method for assigning and processing a label in an optical network. The method includes: learning that a label switched path is required to be established in an optical network; generating a label, in which the label is used for indicating that a first optical channel data unit is multiplexed to a second optical channel data unit; the label includes a tributary slot type indication field that is used for indicating a tributary slot type of the second optical channel data unit, and the label further includes a tributary slot assignment indication field that is used for indicating a tributary slot occupied in the second optical channel data unit into which the first optical channel data unit is multiplexed; and sending the label to a node on the label switched path by a signaling message of GMPLS.

Method for assigning and processing a label in an optical network, optical communication device, and optical communication system

Embodiments of the present invention relate a method, an apparatus, and a system for assigning a tributary port number. The method includes: receiving a service path request message including a service type for establishing a service path used to bear a Lower Order ODU service; determining an OTU link; determining a free tributary slot resource in the OTU link; if a MSI bytes in the OTU link indicates a service type, assigning a tributary port number other than tributary port numbers used by Lower Order ODU services having the same type as the Lower Order ODU service in the OTU link; or if the MSI bytes in the OTU link does not indicate a service type, assigning a tributary port number other than tributary port numbers used by all types of Lower Order ODU services in the OTU link; and sending a service path acknowledgment message to the neighboring node.

Method, apparatus, and system for assigning tributary port number

The present invention discloses a method and system for communication. The method includes: according to a network resource and a signal type of a label switched path to be established, generating, by a first optical communication device, a label indicating that a first optical channel data unit is multiplexed to a second optical channel data unit, wherein the label comprises a tributary slot assignment indication field indicating a tributary slot occupied in the second optical channel data unit, and a length of the tributary slot assignment indication field is equal to the number of tributary slots of the second optical channel data unit; sending the label to a second optical communication device; obtaining, by the second optical communication device, the label; and multiplexing, by the second optical communication device, the first optical channel data unit to the second optical channel data unit based on the label.

Method and system for communication in optical communication system

Embodiments of the present invention relate a method, an apparatus, and a system for assigning a tributary port number. The method includes: receiving a service path request message which is sent by a neighboring node and carries a service type; determining, according to the service path request message, an OTU link used to bear the ODU service, determining and reserving, according to the service type in the service path request message, a free tributary slot resource used to bear the ODU service in the OTU link, and assigning a tributary port number to the free tributary slot resource; and sending a service path acknowledgment message to the neighboring node.

The present invention relates to a method for negotiating link capability information. The method includes: After a higher order optical channel data unit (ODU) link is established, a second node receives first higher order ODU link capability information supported by a first node at one end of the link, where the second node is located at the other end of the link; determines link capability information according to the first higher order ODU link capability information and second higher order ODU link capability information that is supported by the second node; and sends the link capability information to the first node; or sends the second higher order ODU link capability information to the first node, so that the first node determines the link capability information according to the first higher order ODU link capability information and the second higher order ODU link capability information.

Method for negotiating link capability information, network device, and communication system

An information processing method is disclosed according to the embodiments of the present invention. The method includes: A node receives a first message from overhead of a first dimension; the node searches for local configuration information, where the local configuration information includes the overhead of the first dimension of a protection path, a protection resource of the first dimension of the protection path, overhead of a second dimension of the protection path, and a protection resource of the second dimension of the protection path; according to the local configuration information and the first message, the node determines a protection path correlated with the first message and determines overhead of the second dimension correlated with the first message; and the node sends a second message to a node adjacent to the second dimension through the overhead of the second dimension correlated with the first message, according to the first message.

Information processing method in optical network, optical communication apparatus and system

A path computation method is provided. A node device and a path computation element (PCE) are also provided correspondingly. The path computation method includes: sending a path computation request message to the PCE after receiving a client-side service transmission request, the path computation request message carrying identifiers of a source node and a destination node that access a client-side service and carrying a path concatenation constraint; and receiving the path computation response message carrying path information returned by the PCE, the path information being obtained by the PCE through computation according to the identifiers of the source node and the destination node that accesses a client-side service, the concatenation constraint, and concatenation capabilities of each interface of nodes in a network. The technical solution of the present invention is simpler and more convenient, which obviously reduces the complexity of the specific implementation.

Path computation method, node device and path computation element

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, a system and a device for call processing are disclosed in the embodiments of the present invention. The method includes: obtaining, by a call initiator, address information of all or part of call managers in a network domain that processes a call, where the all or part of the call managers include a call manager that processes the call and is adjacent to the call initiator; sending, by the call initiator, a first call creating request message to an adjacent call manager according to the address information of the all or part of the call managers; and receiving, by the call initiator, a first call creating response message from the adjacent call manager. In the case that a service at a client side is required to be sent through multiple networks at a server side, inter-domain link selection and admission control may be implemented through section call processing.

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Shenzhen, China

Xiaobing Zi