Communicating data of a first user equipment and data of a second user equipment on shared resources of a wireless communication system

An apparatus for serving a plurality of user equipments in a wireless communication system,

• wherein the apparatus is configured to receive on resources, which are shared by a plurality of user equipments, which comprise at least a first user equipment and a second user equipment, a superimposed signal comprising at least a first data signal of the first user equipment and a second data signal of the second user equipment, the first data signal and the second data signal modulated using different waveforms and processed according to a non-orthogonal multiple access, NOMA, scheme,
• wherein the apparatus is configured to process the received superimposed signal to acquire the first data signal and the second data signal, and
• wherein the apparatus is configured to demodulate the first data signal and the second data signal on the basis of the waveforms used for modulating the first data signal and the second data signals.

A user equipment served by an apparatus in a wireless communication system,

• wherein, to receive data from the apparatus on resources shared by the user equipment and at least one further user equipment, the user equipment is configured to receive a superimposed signal comprising a first data signal of the user equipment and a second data signal of the further user equipment,
• wherein the first data signal is modulated using a first waveform, and the second data signal is modulated using a second waveform, the first waveform being different from the second waveform.

A method for transmitting in a wireless communication system data of a plurality of user equipments, which comprise at least a first user equipment and a second user equipment, on resources shared by the plurality of user equipments, the method comprising:

• transmitting a first data signal of the first user equipment and second data signal of the second user equipment using a non-orthogonal multiple access, NOMA, scheme,
• wherein the first data signal and the second data signal are modulated using different waveforms prior to superposition of the first and second data signals.

A method for transmitting in a wireless communication system data of a plurality of user equipments, which comprise at least a first user equipment and a second user equipment, on resources shared by the plurality of user equipments, the method comprising:

• modulating the first data signal and the second data signal using different waveforms prior to superimposing the first and second data signals,
• processing the modulated first data signal and the modulated second data signal according to a pathloss or signal attenuation on a channel between the first and second user equipments and the apparatus or according to the geographical locations of the first user equipment and the second user equipment relative to the apparatus, and
• superimposing the first data signal and the second data signal.

A method for receiving in a wireless communication system data of a plurality of user equipments, which comprise at least a first user equipment and data of a second user equipment, on resources shared by the plurality of user equipments, the method comprising:

• receiving on resources, which are shared by the plurality of user equipments, a superimposed signal comprising at least a first data signal of the first user equipment and a second data signal of the second user equipment, the first data signal and the second data signal modulated using different waveforms and processed according to a non-orthogonal multiple access, NOMA, scheme,
• processing the received superimposed signal to acquire the first data signal and the second data signal, and
• demodulating the first data signal and the second data signal on the basis of the waveforms used for modulating the first data signal and the second data signals.