Abstract:
Embodiments of the present invention relate to the communications field, and in particular, to a data scheduling and switching method, apparatus, and system. A data packet is distributed to an optical switching unit or an electrical switching unit for switching by using a control policy. The data packet may be switched by using an electrical packet switching module of the data switching apparatus, or may be switched by using an optical packet switching module.
Abstract:
An adaptive compensation control method for optical communications technologies, which includes acquiring optical label information of an optical signal, where the optical label information carries information about a destination receive port of the optical signal, determining, according to the information about the destination receive port of the optical signal, a switching path, in an optical switch switching matrix, of the optical signal, and determining an optical switch compensation value of the optical signal according to a preset compensation value of each optical switch cell on the switching path, where the optical switch compensation value is used to compensate the optical signal.
Abstract:
A data transmission method, apparatus, and system can implement stable and reliable data transmission between Ethernet devices by using an optical switching device. The method includes: acquiring, by a transmit end device, first data; performing first scrambling processing on the first data by using a scrambler, so as to generate second data; generating, according to the second data, an optical data packet that includes an optical data frame, where the optical data frame includes a field of a first preamble; and sending an optical signal that carries the optical data packet to a optical switching device, so that the optical switching device performs switching processing on the optical signal, so as to send the optical data frame to a second Ethernet device.
Abstract:
An encoding method includes: obtaining m lanes of first data streams through m input lanes, where m is a positive integer; processing the m lanes of first data streams to obtain z lanes of second data streams, where z is a positive integer; separately performing encoding processing on each of the z lanes of second data streams to obtain z lanes of third data streams; and performing multiplex processing on the z lanes of third data streams to obtain n lanes of fourth data streams, where n is a positive integer.
Abstract:
An encoding method includes: obtaining a generator matrix for encoding, where the generator matrix is determined based on a target parity-check matrix of a Hamming code for encoding, the target parity-check matrix is based on a target function for decoding, the target function is used to determine a not-all-zero row vector extended based on the target parity-check matrix, and the target function is one of a predetermined function set; encoding information bits using the generator matrix to obtain an encoded data stream; and sending the encoded data stream.
Abstract:
A method and an apparatus for establishing a transmission path for exchanging an optical signal, where a gate device is disposed in front of an optical switch matrix, where the optical signal reaches the optical switch matrix through the gate device. A working state of the gate device and a working state of a first optical switch used for transmitting the optical signal in the optical switch matrix are adjusted in a time sequence such that when a transmission path used for transmitting the optical signal in the optical switch matrix is established, dynamic crosstalk can be reduced, and communication quality is improved.
Abstract:
An optical transmission system and transmission method, an optical switching apparatus, and a control method are provided. Any data transmission apparatus included in an optical transmission system is configured to: transmit an optical label signal and a continuous data signal including an idle sequence and a data packet, and transmit the transmitted optical label signal to an optical switching apparatus, so that the optical switching apparatus builds, according to the optical label signal, a switching and transmission path for transmitting the continuous data signal transmitted by the any data transmission apparatus. This ensures that a data transmission apparatus transmits a continuous data signal, and also ensures that each optical receiving system can receive the continuous data signal. Therefore, no preamble needs to be added before a data packet carried in a to-be-processed data signal, thereby avoiding a resource waste and saving bandwidth resources.
Abstract:
This application discloses a transmission method for optical communication. The method is applicable to a plurality of scenarios of over 400 Gbps (including 600 Gbps, 800 Gbps, and the like), such as a metropolitan area network, a backbone network, and data center interconnection. The method includes: generating a frame including a plurality of symbols, where in a polarization direction, the frame includes NFAW frame alignment word symbols, NPS pilot symbols, and NRES reserved symbols, one symbol in every M symbols in the frame is a pilot symbol, and NFAW+NRES=M or NFAW+NRES+1=M; and each of the frame alignment word symbols and the pilot symbols is one of −A−Aj, −A+Aj, A−Aj, and A+Aj, and A is a real number; and transmitting the frame.
Abstract:
A method and an apparatus for establishing a transmission path for exchanging an optical signal, where a gate device is disposed in front of an optical switch matrix, where the optical signal reaches the optical switch matrix through the gate device. A working state of the gate device and a working state of a first optical switch used for transmitting the optical signal in the optical switch matrix are adjusted in a time sequence such that when a transmission path used for transmitting the optical signal in the optical switch matrix is established, dynamic crosstalk can be reduced, and communication quality is improved.
Abstract:
This application provides a data processing method and a second communication apparatus, to resolve a problem of relatively long data synchronization time in a conventional technology, and may be applied to augmented reality AR, virtual reality VR, artificial intelligence AI, cloud applications, or other fields. The data processing method includes: A second optical module receives first data from a first optical module, and determines out-of-synchronization lock based on the first data. The second optical module sends, to a second host, first indication information indicating that the second optical module is in out-of-synchronization lock state. The second optical module receives second data from the first optical module, determines synchronization lock based on the second data, and sends, to the second host, second indication information indicating that the second optical module is in synchronization lock state.