Provided are a client signal transmission method, apparatus and system and a computer-readable storage medium. The method includes mapping a client signal into a predetermined container corresponding to the client signal; mapping the predetermined container into the corresponding number of first code blocks in a payload area of an optical transport network frame and inserting special idle code blocks during the mapping for rate compensation, where the first code blocks are obtained by dividing the payload area of the optical transport network frame; and sending the optical transport network frame carrying the predetermined container and configuration information of the predetermined container.

A switch system includes interface circuitry configured to ingress and egress clients each including a stream of encoded blocks; and switch circuitry configured to switch the clients between the interface circuitry based on block boundaries of the stream of encoded blocks. The stream of encoded blocks can include 64 b/66 b encoding. Each block in the stream of encoded blocks can be switched intact.

The present disclosure relates to data processing methods and apparatus. One example method includes obtaining a first data block from first optical path data, adding padding data and the first data block into a target information bit in a first data frame to form target data, encoding the target data to obtain a first code block, and sending the first code block.

The present disclosure discloses example method and apparatus for switching a line bandwidth of an optical transport network. One example method includes a network device switching an optical transport network (OTN) frame from a first bandwidth to a second bandwidth at a granularity of a substructure to generate a first OTN frame with the second bandwidth, where a bandwidth of the substructure is a specified value, and a difference between the first bandwidth and the second bandwidth is a multiple of the specified value. The first OTN frame with the second bandwidth is encapsulated as an encapsulated frame with the second bandwidth according to a first encapsulation protocol. The encapsulated frame with the second bandwidth is transmitted at an optical layer.

Provided are a link capacity adjustment method and device. The method includes: a node device obtains a latency of a Physical Layer (PHY) for link capacity adjustment of a Flex Ethernet (FlexE) group; and clock offsets of all the PHYs in the FlexE group are aligned according to the obtained latency. According to embodiments of the present disclosure, the clock offsets of all the PHYs in the FlexE group are aligned, thereby preventing data loss caused by the clock offsets of the PHYs in the FlexE group during link capacity adjustment.

An optical interface includes circuitry configured to operate the optical interface at a first rate, subsequent to a requirement to suberate the optical interface to a second rate, determine which services are affected, signal a partial failure for the one or more affected services, and operate the optical interface at a second rate that is less than the first rate. The optical interface can be a Flexible Optical (FlexO) or ZR interface.

A method includes: determining a target code block in a code block stream that is in a first rate mode and includes a plurality of code blocks, where the target code block includes a code block of a start type in the first rate mode; modifying information carried in a code block type field of the target code block to target information, where the target information includes information carried in a code block type field of a code block of a start type in a second rate mode; or the target information includes information carried in a code block type field of a code block of a terminate type in a second rate mode; and transmitting a code block stream in the second rate mode to a transport network, where the code block stream in the second rate mode includes a modified target code block.

Embodiments of this application provide a method. A receiving device determines that a first PHY needs to be added to a first FlexE group in a working state; performs deskew on the first PHY or each PHY in the first FlexE group based on a received data stream corresponding to the first PHY and a received data stream corresponding to each PHY in the first FlexE group, and restores a data stream corresponding to a client from a PHY in the first FlexE group; and if skew between the data stream corresponding to the first PHY and the data stream corresponding to each PHY in the first FlexE group after the deskew is performed is zero, restores a data stream corresponding to a client from a PHY in a second FlexE group. Flexibility of adjusting a PHY in a FlexE group in a working state is improved.

This application discloses a multi-codeword transmission method and an apparatus. The method includes: generating, by a network device, downlink control information corresponding to each of a plurality of code words to be sent to a terminal device, where the downlink control information corresponding to each code word includes at least one of the following: a physical downlink shared channel resource element mapping and quasi-co-location indicator, and an antenna port(s), scrambling identity and number of layers; and sending, by the network device, downlink control information corresponding to the plurality of code words to the terminal device. Corresponding apparatuses are further disclosed. According to the technical solutions of this application, the network device generates the downlink control information corresponding to each of the plurality of code words to be sent to the terminal device, and the terminal device may demodulate data for the plurality of code words based on downlink control information corresponding to the plurality of code words. This ensures that the terminal device correctly demodulates data in a multi-codeword transmission scenario.

Embodiments of this application provide a data transmission method, a communications device, and a storage medium to reduce a quantity of cross-connections of an intermediate node in a network. In the embodiments of this application, Q first code block streams that are obtained are multiplexed into one second code block stream for transmission, a coding type of the first code block streams is M1/N1 bit coding, a coding type of the second code block stream is M2/N2 bit coding, and bits corresponding to code blocks in the Q first code block streams are carried in a payload area of a code block in the second code block stream. In other words, in the solutions provided by the embodiments of this application, the code block streams are multiplexed and demultiplexed based on a code block granularity.