Limited buffer rate matching calculation

An apparatus, comprising:

• at least one processor;
• and
• at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to:
• transmit, to a terminal device, one or more maximum rank values for at least one bandwidth part, BWP, of one or more serving cells of the terminal device, wherein the one or more maximum rank values are associated with one or more physical uplink shared channel, PUSCH, transmission schemes and to be used for the terminal device to determine a maximum number of layers for limited buffer rate matching, LBRM.

A method, comprising:

• receiving, by a terminal device and from a network device, one or more maximum rank values for at least one bandwidth part, BWP, of one or more serving cells of the terminal device, wherein the one or more maximum rank values are associated with one or more physical uplink shared channel, PUSCH, transmission schemes;
• determining, by the terminal device, based at least on the one or more maximum rank values, a maximum number of layers for limited buffer rate matching, LBRM;
• and
• determining, by the terminal device, a transport block size, TBS, for LBRM, using the maximum number of layers.