Methods of signalling in an advanced wireless communication system supporting multi-user superposition transmission

A data communication method for use in an advanced cellular wireless communication system supporting Multi-User Superposition Transmission (MUST), the method comprising:

• reporting, to a MUST base station, a MUST receiver scheme;
• receiving, from the MUST base station, MUST configuration data including a MUST transmission technique;
• determining a baseline size of second downlink control information according to the MUST transmission technique and a MUST receiver scheme;
• receiving, from the MUST base station:
• first downlink control information, including an indication that MUST is used;
• second downlink control information including assistant information according to the determined baseline size;
• and
• a MUST composite data signal on an associated DL shared channel, according to the MUST transmission technique.

An advanced wireless communication system including:

• a plurality of UEs, including at least a MUST-UE;
• and
• an advanced base station, the advanced base station configured to:
• receive, from the MUST-UE, a MUST receiver scheme;
• determine a baseline size of second downlink control information according to the received MUST receiver scheme and a MUST transmission technique;
• configure the MUST-UE to operate according to a MUST configuration, the MUST configuration including the MUST transmission technique;
• and
• transmit, to the MUST-UE:
• first downlink control information, including an indication that MUST is used;
• second downlink control information including assistant information according to the determined baseline size;
• and
• a MUST composite data signal on an associated DL shared channel, according to the MUST transmission technique.