The disclosures provide a method and apparatus for transmitting and receiving interface signals of a distributed base station. At least one channel of Common Public Radio Interface (CPRI) signals of a distributed base station are encapsulated into optical transport unitx (OTUx) signals in a frame structure of OTUx by adopting Generic Mapping Procedure (GMP) mapping scheme, wherein the x represents a transmission capacity and wherein the OTUx is adopted for providing a bandwidth required by the at least one channel of CPRI signals, and then the OTUx signals that bear the at least one channel of CPRI signals are sent.

Various aspects provide for mapping a plurality of signals to generate a combined signal. An aggregation component is configured for generating a combined signal that comprises a higher data rate than a data rate associated with a plurality of signals based on mapped data associated with the plurality of signals. The aggregation component comprises a mapper component. The mapper component is configured for generating the mapped data based on a mapping distribution pattern associated with a generic mapping procedure. In an aspect, a de-aggregation component is configured for recovering the plurality of signals from a pseudo signal transmitted at a data rate of the combined signal. In another aspect, the de-aggregation component comprises a de-mapper component configured for de-mapping the mapped data based on the mapping distribution pattern associated with the generic mapping procedure.

A method is performed by a gateway node that is at a boundary of the first network domain and the second network domain. The method includes receiving an end-to-end delay measurement request sent by the first node to measure end-to-end delay between the first node and the second node. The end-to-end delay measurement request is configured to initiate a first delay measurement process configured for use in the first network domain. The gateway node sends to the second node a delay measurement request configured to initiate a second delay measurement process configured for use in the second network domain. The gateway node determines a delay measurement in the second network domain between the gateway node and the second node using the second delay measurement process. The gateway node sends to the first node an end-to-end delay measurement response that enables the first node to compute the end-to-end delay.

The disclosures provide a method and apparatus for transmitting and receiving interface signals of a distributed base station. At least one channel of Common Public Radio Interface (CPRI) signals of a distributed base station are encapsulated into optical transport unit x (OTUx) signals in a frame structure of OTUx by adopting Generic Mapping Procedure (GMP) mapping scheme, wherein the x represents a transmission capacity and wherein the OTUx is adopted for providing a bandwidth required by the at least one channel of CPRI signals, and then the OTUx signals that bear the at least one channel of CPRI signals are sent.

The present disclosure relates to methods for flexible Ethernet (FlexE), network devices, computer-readable storage mediums, and computer program products. In one example method, for a to-be-generated code block set, a network device determines a corresponding first payload block set obtained by removing an alignment marker block from the code block set. If the network device determines that the first payload block set needs to include a pad block, the network device determines a location of the pad block in the first payload block set. The network device determines a location of the pad block in the code block set based on the location of the pad block in the first payload block set.

Embodiments of this application disclose a processing method of an optical transport network frame, an apparatus, and a system. The processing method of the optical transport network frame includes a plurality of steps. A sending device maps a first optical service unit frame to the optical transport network frame in a first mapping manner. The sending device maps a second optical service unit frame to the optical transport network frame in a second mapping manner. Types of the second optical service unit frame and the first optical service unit frame are different, or types of services carried by the second optical service unit frame and the first optical service unit frame are different. Overhead information corresponding to the second mapping manner is at least partially different from overhead information corresponding to the first mapping manner. The sending device sends the optical transport network frame.

A service processing method and apparatus and a device is disclosed. Synchronization headers of four 66b code blocks are removed, and a 1-bit code block type indication is added as control information of service data, to be encoded as a 257b code block. This avoids a bandwidth waste caused by the synchronization headers, and improves bandwidth utilization. When a 257b code block stream is mapped to an OSUflex frame, the code block type indication is mapped to an overhead area of the OSUflex frame, the four 66b code blocks from which the synchronization headers are removed are mapped to a payload area of the OSUflex frame, and check information obtained by checking the control information is mapped to the overhead area of the OSUflex frame, so that bit error protection is performed on the control information.

A storage device, a data communication method, and a system, related to the field of optical communication technologies. A network adapter in the storage device implements OTN encapsulation of data, so that an OTN frame to which the data is mapped can be generated without transmission and encapsulation of the data through a plurality of devices. This reduces transmission latency of the data from a memory to an optical transceiver, and improves data communication efficiency. In addition, because the data does not need to be processed through an Ethernet switch, a protocol stack used by the storage device to encapsulate the data into the OTN frame does not need to use an Ethernet protocol. This simplifies an encapsulation procedure required for generating the OTN frame, reduces an amount of data included in the OTN frame, and helps further improve the data communication efficiency.