Patent application number | Description | Published |
20130212268 | Route Control Method and System, and Route Computing Apparatus - A route control method is disclosed in the present document. The method includes: a path computing apparatus acquiring a latency value of each node and a latency value of a link between each node and each adjacent node thereof; and when receiving a route computing request, according to each latency value acquired, the path computing apparatus computing an end-to-end path satisfying a latency requirement of a service corresponding to the route computing request. A path computing apparatus and a route control system are also disclosed in the present document. With the present document, a route control computed by the latency provides a solution for a latency Service Level Agreement (SLA) of operators. | 08-15-2013 |
20130216222 | Signaling Control Method and System for Service Establishment Based on G.709 - A signaling control method for service establishment based on G.709 is provided in the present invention, including: a control plane obtaining routing information of an end-to-end service to be established, information of a gateway network element passed by end-to-end service routing and a multi stage multiplexing capability selected for the gateway network element, initiating an end-to-end connection establishment process, and sending an end-to-end connection establishment signaling to nodes passed by the end-to-end service routing, wherein, the end-to-end connection establishment signaling contains the multi stage multiplexing capability selected for the gateway network element passed by the end-to-end service routing, and a corresponding multi stage multiplexing capability is configured on the gateway network element. A signaling control system for service establishment based on G.709 is also provided in the present invention. In the method and system, the interconnection between old devices and new devices is better implemented. | 08-22-2013 |
20130279904 | Method and System for Automatically Discovering ODUflex Bandwidth Lossless Adjustment Capability - A method and system for automatically discovering a flexible rate Optical Data Unit (ODUflex) bandwidth hitless resizing capability are provided in the present document. The method includes: a source end interface of a link sending link summary message to an opposite end interface of the link, wherein the link summary message carries information of whether the source end interface of the link supports the ODUflex bandwidth hitless resizing capability; after receiving the link summary message, the opposite end interface of the link feeding back message to the source end interface of the link according to said information or according to said information and whether the opposite end interface of the link supports the ODUflex bandwidth hitless resizing capability, the source end interface of the link determining whether the link supports the ODUflex bandwidth hitless resizing capability according to the message fed back by the opposite end interface of the link. | 10-24-2013 |
20130294773 | G.709 Based Multi-Level Multiplexing Routing Control Method and Gateway Network Element - A G.709 based multi-stage multiplexing routing control method and a gateway network element. The method comprises: a gateway network element broadcasting multi-stage multiplexing capability of the gateway network element to a routing domain where the gateway network element is located or a path calculation entity through an extended routing protocol, so as to implement multi-stage multiplexing configuration and management of an optical transport network through the gateway network element; the multi-stage multiplexing capability comprises information of multiplexing hierarchy supported by a port of a link connected to the gateway network element and adaptation ability. | 11-07-2013 |
20150104175 | CHANNEL ESTABLISHMENT METHOD AND DEVICE - A channel establishment method and device are provided. The method includes: establishing a media channel between a first node and a second node, wherein the first node is the source node of the media channel, the second node is the destination node of the media channel, and the media channel passes the frequency slot matrix of the one or more intermediate nodes between the first node and the second node and the optical fiber between any two nodes; and allocating frequency spectrum to the media channel from the available frequency spectrum of the optical fiber, wherein the media channel supports at least one single signal frequency slot. The solution can address the problem of how to effectively plan and manage frequency spectrum for an introduced flexible grid technology. | 04-16-2015 |
20150163009 | Channel establishment method and device - A channel establishment method and device are provided. The method includes: establishing a media channel between a first node and a second node; establishing a signal channel between a third node and a fourth node after the media channel is established, the signal channel passes a frequency slot matrix of one or more intermediate nodes between the third node and the fourth node and a traffic engineering link between any two nodes; and allocating frequency spectrum to the signal channel from available frequency spectrum of the traffic engineering link, wherein the frequency spectrum allocated includes multiple split 50 GHz frequency spectrums which bear one optical channel and each of which only includes single optical carrier. The solution addresses the problem of how to effectively plan and manage frequency spectrum for an introduced flexible grid technology, improves waveband spectrum efficiency and achieves the compatibility to 50 GHz transmission technology of existing DWDM systems. | 06-11-2015 |
20150236810 | METHOD AND DEVICE FOR TRANSMITTING DATA - A method and device for transmitting data are disclosed, the method comprising: mapping the data to an ODUS, and mapping the ODUS into an OTUS, wherein the rate of the ODUS and the OTUS are M*100 Gb/s, M is a positive integer greater than or equal to 2, and the tributary slot size of the ODUS and the OTUS are 100 Gb/s; distributing the OTUS into M groups of electric channel signals, wherein each group of electric channel signals corresponds to N electric layer channels, N is a positive integer; and mapping all the data distributed into the electric channel signals by the OTUS into the same OChS for transmission, wherein the rate of the OChS is M*100 Gb/s, the M groups of electric channel signals are carried by a single frequency sequence or multiple non-continuous frequency sequences, each frequency sequence carries m groups of electric channel signals, 1≦m≦M, m is an integer. The disclosure improves optical fibber utilization efficiency as well as system flexibility and compatibility. | 08-20-2015 |
20150256258 | DATA MAPPING METHOD AND DEVICE FOR OPTICAL TRANSPORT NETWORK - A data mapping method and a data mapping device for an optical transport network are provided. The method includes: mapping packet service data or constant bit rate data to a Super Optical Channel Data Unit (ODUS) and mapping the ODUS to a Super Optical Channel Transport Unit (OTUS); distributing the OTUS to a plurality of electrical lane signals, dividing the plurality of electrical lane signals into one or more groups and mapping the one or more groups of electrical lane signals to corresponding Super Optical Channels (OChSi), wherein rates of the ODUS and the OTUS are both N times of 100 Gb/s, a rate of the OChSi is M times of 100 Gb/s, tributary slot sizes of the ODUS and the OTUS are both 100 Gb/s, where N is a positive integer equal to or greater than 2, i is a positive integer, and M is a positive integer equal to or greater than 1 but less than N. The present document enables an operator to deploy a beyond-100 G optical transmission system more flexibly, without being limited to select a fixed rate, and improves the spectrum utilization rate of fiber as well as the flexibility and the compatibility of a system. | 09-10-2015 |