Abstract: Embodiments of the present disclosure provide a data transmission method, which meets a requirement for an Ethernet network with diversified rate levels. The method includes: grouping media access control (MAC) layer data into a plurality of MAC layer data groups; allocating, according to a bandwidth required by a target MAC layer data group and a reference bandwidth of a logical channel, at least one target logical channel to the target MAC layer data group; encoding the target MAC layer data group to generate target physical layer data, where the target logical channel corresponds to the target MAC layer data group and the target physical layer data; and sending the target physical layer data and first indication information, where the first indication information is used to indicate a relationship between the target physical layer data and the target logical channel.

Abstract: A method and an apparatus for transmission using an interface, and a device. The method includes: obtaining a byte block stream, where byte blocks in the byte block stream are of a predetermined byte length; mapping the byte block stream to corresponding timeslots, where each timeslot corresponds to one byte block; distributing the byte block stream mapped to the timeslots; processing the distributed byte block stream based on an interface type configured for a physical interface; and sending the processed byte block stream. In the embodiments, data is transmitted based on a byte block distribution mechanism, to support different interface types, and a coupling relationship between service adaptation and a physical layer is decoupled, so that evolution and extension of transmission interface types do not affect a service adaptation procedure, thereby simplifying a transmission system.

Abstract: A method and an apparatus for transmission using an interface, and a device. The method includes: obtaining a byte block stream, where byte blocks in the byte block stream are of a predetermined byte length; mapping the byte block stream to corresponding timeslots, where each timeslot corresponds to one byte block; distributing the byte block stream mapped to the timeslots; processing the distributed byte block stream based on an interface type configured for a physical interface; and sending the processed byte block stream. In the embodiments, data is transmitted based on a byte block distribution mechanism, to support different interface types, and a coupling relationship between service adaptation and a physical layer is decoupled, so that evolution and extension of transmission interface types do not affect a service adaptation procedure, thereby simplifying a transmission system.

Abstract: Embodiments of the present disclosure provide a data transmission method, which can meet a requirement for an Ethernet network with diversified rate levels. The method includes: grouping media access control (MAC) layer data into a plurality of MAC layer data groups; allocating, according to a bandwidth required by a target MAC layer data group and a reference bandwidth of a logical channel, at least one target logical channel to the target MAC layer data group; encoding the target MAC layer data group to generate target physical layer data, where the target logical channel corresponds to the target MAC layer data group and the target physical layer data; and sending the target physical layer data and first indication information, where the first indication information is used to indicate a relationship between the target physical layer data and the target logical channel.

Abstract: Embodiments of the present disclosure provide a data transmission method, which can meet a requirement for an Ethernet network with diversified rate levels. The method includes: grouping media access control (MAC) layer data into a plurality of MAC layer data groups; allocating, according to a bandwidth required by a target MAC layer data group and a reference bandwidth of a logical channel, at least one target logical channel to the target MAC layer data group; encoding the target MAC layer data group to generate target physical layer data, where the target logical channel corresponds to the target MAC layer data group and the target physical layer data; and sending the target physical layer data and first indication information, where the first indication information is used to indicate a relationship between the target physical layer data and the target logical channel.

Abstract: The embodiments of the present invention relate to the field of communications technologies, and disclose a lossless adjustment method of ODUflex channel bandwidth and an ODUflex channel. The lossless adjustment method includes: respectively adjusting, according to bandwidth adjustment indication request information, a time slot occupied by an ODUflex frame in a higher order optical channel data unit at an egress side of each network node on an ODUflex channel; and adjusting, according to rate adjustment indication information, a transmission rate of the ODUflex frame of each network node on the ODUflex channel, to enable the transmission rate of each network node on the ODUflex channel to be unified.

Abstract: 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.

Abstract: The embodiments of the present invention relate to the field of communications technologies, and disclose a lossless adjustment method of ODUflex channel bandwidth and an ODUflex channel. The lossless adjustment method includes: respectively adjusting, according to bandwidth adjustment indication request information, a time slot occupied by an ODUflex frame in a higher order optical channel data unit at an egress side of each network node on an ODUflex channel; and adjusting, according to rate adjustment indication information, a transmission rate of the ODUflex frame of each network node on the ODUflex channel, to enable the transmission rate of each network node on the ODUflex channel to be unified.

Abstract: The embodiments of the present disclosure relate to the field of communications technologies, and disclose a lossless adjustment method of ODUflex channel bandwidth and ODUflex channel. The lossless adjustment method includes: respectively adjusting, according to bandwidth adjustment indication request information, a time slot occupied by an ODUflex frame in a higher order optical channel data unit at an egress side of each network node on an ODUflex channel; and adjusting, according to rate adjustment indication information, a transmission rate of the ODUflex frame of each network node on the ODUflex channel, to enable the transmission rate of each network node on the ODUflex channel to be unified.

Abstract: 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.

Abstract: 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.

Abstract: Embodiments of the present disclosure provide a data transmission method, which can meet a requirement for an Ethernet network with diversified rate levels. The method includes: grouping media access control (MAC) layer data into a plurality of MAC layer data groups; allocating, according to a bandwidth required by a target MAC layer data group and a reference bandwidth of a logical channel, at least one target logical channel to the target MAC layer data group; encoding the target MAC layer data group to generate target physical layer data, where the target logical channel corresponds to the target MAC layer data group and the target physical layer data; and sending the target physical layer data and first indication information, where the first indication information is used to indicate a relationship between the target physical layer data and the target logical channel.

Abstract: The embodiments of the present invention relate to the field of communications technologies, and disclose a lossless adjustment method of ODUflex channel bandwidth and an ODUflex channel. The lossless adjustment method includes: respectively adjusting, according to bandwidth adjustment indication request information, a time slot occupied by an ODUflex frame in a higher order optical channel data unit at an egress side of each network node on an ODUflex channel; and adjusting, according to rate adjustment indication information, a transmission rate of the ODUflex frame of each network node on the ODUflex channel, to enable the transmission rate of each network node on the ODUflex channel to be unified.

Abstract: The embodiments of the present application relate to the field of communications technologies, and disclose a method for adjusting bandwidth of a flexible Optical channel Data Unit (ODUflex) channel. The method includes: respectively adjusting, according to a bandwidth adjustment indication message, a quantity of time slots occupied by an ODUflex frame in a higher order optical channel data unit (HO ODU) at an egress side of each network node on an ODUflex channel; and adjusting, according to a rate adjustment indication message, a transmission rate of the ODUflex frame of each network node on the ODUflex channel, so as to unify the transmission rate of each network node on the ODUflex channel.

Abstract: 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.

Abstract: A bandwidth adjusting method and a communication node are provided. The adjusting method includes: sending, by an upstream ingress unit, a group of multi-channel parallel basic switch cells in which adjustment signaling is carried to all downstream branch egress units; sending normal signaling when determining that adjustment response statuses returned by all the downstream branch egress units are reception acknowledgment; after receiving the normal signaling by the downstream branch egress unit, adding or removing the basic switch cell into or from a next group of multi-channel parallel basic switch cells according to the adjustment signaling; and adjusting a time slot of an HO ODU sent by the downstream branch egress unit to a downstream node, and instructing the downstream node to adjust the time slot of the HO ODU. Through the method and the communication node, lossless bandwidth adjustment in a point-to-multipoint OTN asymmetric bandwidth carrier system is implemented.

Abstract: Embodiments of the present invention disclose a method for the generic mapping procedure GMP mapping, a method for GMP demapping, and an apparatus. The method for mapping includes: carrying, in an overhead GMP OH of the ith GMP block container, information about a TS that needs to be occupied by the (i+n)th GMP block container; adjusting the (i+n)th GMP block container according to the information about the TS that needs to be occupied by the (i+n)th GMP block container; performing, according to the adjusted (i+n)th GMP block container, the GMP mapping on customer service data to be sent, so that a receive end is capable of adopting a corresponding demapping manner according to a change of the block container, which implements lossless mapping and demapping processing by adopting a GMP for a variable block container.

Abstract: 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.

Abstract: A method and an apparatus for sending an Ethernet physical-layer OAM overhead, and a method and an apparatus for receiving an Ethernet physical-layer OAM overhead are disclosed herein. A method for sending an Ethernet physical-layer OAM overhead includes: adjusting the order of sending a payload block and part of Inter-Packet Gaps (IPGs) in a data stream to be transmitted; and when receiving a request for sending an OAM overhead, substituting the OAM overhead for the part of IPGs, and sending the OAM overhead before sending the payload block. Through the present invention, the order of sending IPGs and payload blocks in an MAC data stream can be adjusted, and the OAM overhead can be sent in time.

Abstract: A method and apparatus for distributing and receiving high-speed Ethernet Media Independent Interface (MII) blocks are provided to moderate the increase of control lines with the increase of the bit width and to simplify the block types in the coding process of the Physical Coding Sublayer (PCS). The technical solution disclosed herein includes: processing received Media Access Control (MAC) layer data, and adjusting distribution of control characters to generate a 64-bit block; obtaining a control signal code of the 64-bit block according to the relation between the form of the 64-bit block and the control signal code; and binding each 64-bit block to the corresponding control signal code respectively, and sending bound data over a separate channel.