Method and apparatus for sending and receiving multiframe, device, system, and storage medium

A method for sending a multiframe, comprising:

• in a case where an interface bandwidth speed of a physical layer is 50 Gbit/s, a number of timeslots is ten, determining a multiframe number to be sixteen, and identifier values of a multiframe identifier are eight consecutive “0”s and eight consecutive “1”s in sequence, wherein a number of consecutive “0”s and a number of consecutive “1”s are for determining a position of a boundary of the multiframe, wherein the number of timeslots is equal to the interface bandwidth speed divided by 5G;
• wherein the multiframe identifier is carried in the multiframe, the identifier values of the multiframe identifier for identifying the multiframe number are sequentially carried in preset positions of overhead blocks of respective frames constituting the multiframe, and the multiframe number is a number of frames constituting the multiframe;
• wherein each of the preset positions is an Overhead Multiframe Indicator (OMF) field of the overhead blocks, the method further comprising:
• extracting OMF field content;
• determining whether a received multiframe structure pattern is correct according to positions where values of the OMF field change from 0 to 1 and from 1 to 0 are consistent with expected change positions;
• and
• receiving data according to the boundary of the multiframe.

A communication device, comprising:

• at least one processor;
• and
• a memory communicably connected with the at least one processor and configured for storing computer-executable instructions executable by the at least one processor, wherein the computer-executable instructions when executed by the at least one processor cause the at least one processor to:
• for physical layers of different interface bandwidth speeds, determine a multiframe number of the multiframe to be n-th power of 2, wherein n is a minimum positive integer that causes the multiframe number greater than or equal to a number of timeslots of a physical layer, identifier values of a multiframe identifier for identifying the multiframe number are sequentially carried in preset positions of overhead blocks of respective frames constituting the multiframe, wherein the number of the identifier values of the multiframe identifier is the same as the multiframe number, the identifier values of the multiframe identifier are a preset number of consecutive “0”s and the preset number of consecutive “1”s in sequence, wherein the multiframe number is an even number and the preset number is half of the multiframe number, wherein the preset number of consecutive “0”s and the preset number of consecutive “1”s are for determining a position of boundary of the multiframe, wherein the number of timeslots is equal to an interface bandwidth speed divided by 5G;
• wherein each of the preset positions is an Overhead Multiframe Indicator (OMF) field of the overhead blocks, the communication device is further caused to:
• extract OMF field content;
• determine whether a received multiframe structure pattern is correct according to positions where values of the OMF field change from 0 to 1 and from 1 to 0 are consistent with expected change positions;
• and
• receive data according to the boundary of the multiframe.

A communication device, comprising:

• at least one processor;
• and
• a memory communicably connected with the at least one processor and configured for storing computer-executable instructions executable by the at least one processor, wherein the computer-executable instructions when executed by the at least one processor cause the at least one processor to:
• in a case where an interface bandwidth speed of a physical layer is 50 Gbit/s, a number of timeslots is ten, determine a multiframe number to be sixteen, wherein the multiframe number is a number of frames constituting the multiframe, identifier values of a multiframe identifier for identifying the multiframe number are sequentially carried in preset positions of overhead blocks of respective frames constituting the multiframe, identifier values of a multiframe identifier are eight consecutive “0”s and eight consecutive “1”s in sequence, wherein a number of consecutive “0”s and a number of consecutive “1”s are for determining a position of a boundary of the multiframe, wherein the number of timeslots is equal to the interface bandwidth speed divided by 5G;
• wherein each of the preset positions is an Overhead Multiframe Indicator (OMF) field of the overhead blocks, the communication device is further caused to:
• extract OMF field content;
• determine whether a received multiframe structure pattern is correct according to positions where values of the OMF field change from 0 to 1 and from 1 to 0 are consistent with expected change positions;
• and
• receive data according to the boundary of the multiframe.

A method for determining a multiframe, comprising:

• in a case where an interface bandwidth speed of a physical layer is 50 Gbit/s, a number of timeslots is ten, determining a multiframe number to be sixteen, wherein the multiframe number is a number of frames constituting the multiframe, identifier values of the multiframe identifier for identifying the multiframe number are sequentially carried in preset positions of overhead blocks of respective frames constituting the multiframe, identifier values of a multiframe identifier are eight consecutive “0”s and eight consecutive “1”s in sequence, wherein a number of consecutive “0”s and a number of consecutive “1”s are for determining a position of a boundary of the multiframe, wherein the number of timeslots is equal to the interface bandwidth speed divided by 5G;
• wherein each of the preset positions is an Overhead Multiframe Indicator (OMF) field of the overhead blocks, the method further comprising:
• extracting OMF field content;
• determining whether a received multiframe structure pattern is correct according to positions where values of the OMF field change from 0 to 1 and from 1 to 0 are consistent with expected change positions;
• and
• receiving data according to the boundary of the multiframe.