| Patent application number | Description | Published |
|---|
| 20090074410 | METHOD AND APPARATUS FOR SYNCHRONOUS CROSS-CONNECT SWITCHING IN OPTICAL TRANSPORT NETWORK - A method for synchronous cross-connect switching in optical transport network, the method includes: receiving optical channel transport unit (OTU) signals; mapping the OTU signals into interim switching units, wherein the interim switching units match bit rates of the received OTU signals; performing a synchronous cross-connect switching for the interim switching units; and demapping the interim switching units obtained after the synchronous cross-connect switching to obtain the OTU signals. | 03-19-2009 |
| 20090263131 | METHOD AND SYSTEM FOR TRANSMITTING ETHERNET DATA IN AN OPTICAL TRANSPORT NETWORK - A method and a system for transmitting Ethernet data in an optical transport network (OTN), may include: filling justification byte or Ethernet service data bytes in at least two pairs of negative justification opportunity (NJO) bytes and positive justification opportunity (PJO) bytes in an overhead byte of an optical channel payload unit (OPUk) and filling Ethernet service data in a payload byte of the OPUk; and sending, by a transmitter, the Ethernet service data to a receiver through an optical distribution unit (ODUk) containing the OPUk. The invention realizes transparent transmission of the Ethernet service through a bit asynchronous CBR mapping method in the OTN, and solves the problem that the synchronous or bit asynchronous CBR mapping method in the prior art cannot meet the Ethernet interface frequency offset requirement defined by the IEEE. | 10-22-2009 |
| 20090263135 | METHOD AND APPARATUS FOR TRANSPORTING CLIENT SIGNAL IN OPTICAL TRANSPORT NETWORK - A method for transporting a client signal in an optical transport network (OTN) includes steps as follows. A byte number Cn of a client signal transported in a current OTN frame period is generated according to a client signal clock and a system clock. If the Cn of the current OTN frame falls in a certain range, a predetermined area in an optical channel payload unit-k (OPUk) overhead field is identified as normal, and the Cn is filled in the OPUk overhead field of the current OTN frame. Therefore, the reliability for transporting the client byte number can be improved and an OPUk overhead byte space needed for transporting the client signal byte number can be saved. | 10-22-2009 |
| 20100046951 | METHOD, APPARATUS AND SYSTEM FOR TRANSPORTING MULTI-LANE ETHERNET SIGNAL - Methods, apparatuses and systems for transporting multi-lane Ethernet signal are disclosed. The method primarily includes utilizing a plurality of timeslot channels and justification bytes configured in the OPUk-Xv to build up multiple virtually concatenated transport lanes; and transporting a lane of independent Ethernet data via each lane in the multiple transport lanes. Such schema allows to transparently transport multi-lane Ethernet signal over OTN and addresses the uncontrollability of the time delay occurred when multi-lane Ethernet signal traverse over OTN. In addition, the problem that the frequency offset does not fit the IEEE definition of the Ethernet interface is solved. | 02-25-2010 |
| 20100067905 | METHOD AND DEVICES FOR TRANSMITTING CLIENT SIGNALS IN OPTICAL TRANSPORT NETWORK - A method for transmitting client signals in an OTN includes: obtaining the client signals, and determining an OPUk TS in an OPUk according to the client signals; mapping the client signals to the OPUk TS in an agnostic CBR mapping mode; and adding an overhead into the OPUk, and sending the OPUk with the added overhead to the OTN. A device for transmitting client signals and a device for receiving client signals in an OTN are disclosed. | 03-18-2010 |
| 20100158519 | Method, apparatus and system for transmitting and receiving client signals - The present invention provides a method, apparatus and system for transmitting and receiving a client signal. The method for transmitting a client signal includes, at the transmitting end, mapping a client signal to be transmitted to a corresponding low-order Optical Channel Data Unit (ODU) in a low-order ODU set, wherein low-order ODUs in the low-order ODU set having rates increased in order, and having rate correspondence relations with the client signals; mapping the low-order ODU to a timeslot of a high-order Optical Channel Payload Unit (OPU) in a high-order OPU set; and adding overheads to the high-order OPU to form an Optical Channel Transport Unit (OTU), and transferring the OTU to an Optical Transport Network (OTN) for transmission. | 06-24-2010 |
| 20100303464 | METHOD, SYSTEM, AND DEVICE FOR TRANSMITTING DATA IN OPTICAL TRANSPORT NETWORK - A method, a system, and a device for transmitting data in an OTN are disclosed herein. The method for transmitting data in an OTN includes: mapping the at least one pair of ODU | 12-02-2010 |
| 20110217047 | METHOD AND APPARATUS FOR TRANSPORTING CLIENT SIGNAL IN OPTICAL TRANSPORT NETWORK - A method for transporting a client signal in an optical transport network (OTN) includes steps as follows. A byte number Cn of a client signal transported in a OTN frame period is generated according to a client signal clock and a system clock. If the Cn of the OTN frame falls in a certain range, a predetermined area in an optical channel payload unit-k (OPUk) overhead field is identified as normal, and the Cn is filled in the OPUk overhead field of the OTN frame. Therefore, the reliability for transporting the client byte number can be improved and an OPUk overhead byte space needed for transporting the client signal byte number can be saved. | 09-08-2011 |
