Communication method and apparatus

A communication method, wherein the method comprises:

• receiving a physical layer protocol data unit PPDU, wherein the PPDU corresponds to at least one target user, the PPDU comprises a data field corresponding to the target user, a parameter NSD,short corresponding to the target user is determined based on a resource unit RU or multiple resource unit MRU used to transmit the data field and a modulation and coding scheme MCS of the data field,
• N
• SD
• ,
• short
• ≤
• 1
• N
• ×
• N
• SD
• ,
• or
• ⁢
• N
• SD
• ,
• short
• ≥
• 1
• N
• ×
• N
• SD
• ,
• or
• ⁢
• ❘
• "\[LeftBracketingBar]"
• N
• SD
• ,
• short
• -
• 1
• N
• ⁢
• N
• SD
• ❘
• "\[RightBracketingBar]"
• ≤
• ε
• ,
• and
• ⁢
• ε
• ≤
• M
• 2
• ,
• a value of the parameter NSD is equal to a total quantity of data subcarriers in the RU or MRU used to transmit the data field, the value of the parameter NSD is greater than 3920, the parameter NSD,short indicates a quantity of data subcarriers corresponding to the 1st segment in N segments, a value of N is the same as a quantity of segments obtained by dividing the last OFDM symbol occupied by the data field, N is a positive integer, and M is a positive integer;
• and
• parsing the PPDU.

A communication apparatus, comprising a processor, wherein the processor is configured to execute a program stored in a memory, and when the program is executed, the communication apparatus is enabled to perform the method of:

• generating a physical layer protocol data unit PPDU, wherein the PPDU corresponds to at least one target user, the PPDU comprises a data field corresponding to the target user, a parameter NSD,short corresponding to the target user is determined based on a resource unit RU or multiple resource unit MRU used to transmit the data field and a modulation and coding scheme MCS of the data field,
• N
• SD
• ,
• short
• ≤
• 1
• N
• ×
• N
• SD
• ,
• or
• ⁢
• N
• SD
• ,
• short
• ≥
• 1
• N
• ×
• N
• SD
• ,
• or
• ⁢
• ❘
• "\[LeftBracketingBar]"
• N
• SD
• ,
• short
• -
• 1
• N
• ⁢
• N
• SD
• ❘
• "\[RightBracketingBar]"
• ≤
• ε
• ,
• and
• ⁢
• ε
• ≤
• M
• 2
• ,
• a value of the parameter NSD is equal to a total quantity of data subcarriers in the RU or MRU used to transmit the data field, the value of the parameter NSD is greater than 3920, a value of N is the same as a quantity of segments obtained by dividing the last OFDM symbol occupied by the data field, the parameter NSD,short indicates a quantity of data subcarriers corresponding to the 1st segment in N segments, N is a positive integer, and M is a positive integer;
• and
• sending the PPDU.