Uplink data transmitting device and method, and uplink data receiving device and method

An uplink data receiving device, configured in a network device, comprising:

• a transmitter configured to transmit downlink control information,
• a receiver configured to receive uplink data transmitted in a first transmission scheme or a second transmission scheme,
• wherein a terminal equipment determines a layer number and one or more DMRS port(s) according to the downlink control information, and transmits the uplink data in the first transmission scheme or the second transmission scheme, and wherein the terminal equipment is configured with a first SRS resource set and a second SRS resource set;
• wherein, the downlink control information includes a first field and a second field, the first field includes a first indication field and/or a second indication field;
• in a case where the uplink data is transmitted in the first transmission scheme, a first layer number is determined according to the first indication field, and a second layer number is determined according to the second indication field;
• and the one or more DMRS port(s) are determined according to the second field and a sum of the first layer number and the second layer number.