Patent application number | Description | Published |
20140177652 | METHOD AND APPARATUS FOR TRANSPORTING ULTRA-HIGH-SPEED ETHERNET SERVICE - The present invention discloses a method and an apparatus for transporting an ultra-high-speed Ethernet service. The method includes: distributing an ultra-high-speed Ethernet service data flow into n virtual channels, where a rate of the ultra-high-speed Ethernet service data flow is higher than a rate of 100GE; synchronously adding a marker to data of each of the n virtual channels; mapping the data of the n virtual channels channel by channel; and framing and transmitting the data of the n virtual channels. The method adopts a channelized transport manner to transparently transport an ultra-high-speed Ethernet service, and implements mapping processing on the ultra-high-speed Ethernet service, so as to reduce its complexity to a level for processing a low-rate Ethernet service and reduce implementation difficulty. | 06-26-2014 |
20150063806 | DYNAMIC HITLESS RESIZING IN OPTICAL TRANSPORT NETWORKS - The invention relates to techniques for controlling a dynamic hitless resizing in data transport networks. According to a method aspect of the invention, a network connection comprises M tributary slots defined in a payload area of a higher order transport scheme of the data transport network and the method comprises the steps of receiving a connection resize control signal at each of the nodes along the path of the network connection; adding at each node along the path in response to the connection resize control signal a second set of N tributary slots to the first set of the M tributary slots, such that the network connection comprises M+N tributary slots; and increasing, after M+N tributary slots are available for the network connection at each node along the path, a transport data rate of the network connection. | 03-05-2015 |
20150093113 | METHOD AND APPARATUS FOR MAPPING AND DE-MAPPING IN AN OPTICAL TRANSPORT NETWORK - The embodiments of the present invention disclose methods and apparatuses for mapping processing and de-mapping processing in an optical transport network. A Lower Order Optical Channel Data Unit (LO ODU) signal is mapped into a payload area of an Optical Channel Data Tributary (ODTU) signal in units of M bytes. M is equal to the number of tributary slots of a Higher Order Optical Channel Payload Unit (HO OPU) that are to be occupied by the ODTU signal, and M is an integer larger than 1. Overhead information is encapsulated to an overhead area of the ODTU signal. Thereafter, the ODTU signal is multiplexed into the HO OPU. In this way, an efficient and universal mode for mapping the LO ODU to the HO OPU is provided. | 04-02-2015 |
20150098703 | Method and Apparatus for Transmitting and Receiving Client Signal - Embodiments of the present invention provide a method and an apparatus for transmitting and receiving a client signal, and relate to the field of communications technologies. The method includes: mapping the client signal into channels of a parallel transmission frame, where the parallel transmission frame includes at least two channels; adding an overhead for the channels of the parallel transmission frame after the mapping, to form transmission channels of the parallel transmission frame, where bit rates of the transmission channels of the parallel transmission frame are fixed; and modulating the transmission channels of the parallel transmission frame onto one or more optical carriers in a same optical fiber, and transmitting the optical carrier after the modulation. | 04-09-2015 |
20150104178 | METHOD AND APPARATUS FOR ALLOCATING OPTICAL SPECTRUM BANDWIDTH RESOURCES - Embodiments of the present invention provide a method and an apparatus for allocating optical spectrum bandwidth resources. The method includes: first determine bandwidth of an OTUbase according to optical-layer frequency grid bandwidth and carrier spectrum efficiency; then construct an HO OTUflex according to bandwidth of customer service data and the bandwidth of the OTUbase, bandwidth of the HO OTUflex is a first integer multiple of the bandwidth of the OTUbase; map the customer service data into a payload area of the HO OTUflex and encapsulate overhead information; at last, modulate the HO OTUflex that carries the customer service data to a second integer number of optical channel carriers. The embodiments of the present invention apply to a scenario where customer service data is transported. | 04-16-2015 |
20150139650 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING CLIENT SIGNAL IN OPTICAL TRANSPORT NETWORK - Embodiments of the present invention provide a method and an apparatus for transmitting and receiving a client signal in an optical transport network. In the transmission method, a received client signal is mapped into a variable-rate container OTU-N, wherein a rate of the OTU-N is N times as high as a preset reference rate; and then, the variable-rate container OTU-N is split into N optical sub-channel transport units OTUsubs by column, where a rate of each OTUsub equals to the reference rate; next, the N optical sub-channel transport units OTUsubs are modulated onto one or more optical carriers; at last, the one or more optical carriers is transmitted through a fiber. | 05-21-2015 |
20150222380 | METHOD AND APPARATUS FOR GENERIC MAPPING PROCEDURE GMP AND METHOD AND APPARATUS FOR GENERIC MAPPING PROCEDURE GMP DEMAPPING - Embodiments of the present invention disclose a method for generic mapping procedure (GMP) mapping, which includes: first the information about a adjusted time slot to be occupied by a second GMP block container is carried in the GMP overhead of a first GMP block container; then, the size of the second GMP block container is adjusted in accordance with the inforamtion; eventually, a client signal is mapped into the adjusted second GMP block container adopting a GMP scheme. This GMP mapping method, when working with a corresponding demapping method, provides lossless mapping and demapping of client signals during the process of bandwidth adjusting. | 08-06-2015 |