Methods and apparatuses for cell-free massive mimo communication

An Access Point, AP, configured to transmit data intended for a terminal in a cell-free massive Multiple-Input and Multiple-Output, MIMO, communications system, the AP being grouped into a cluster together with other APs and the cluster operates autonomously and the cluster being connected to, and managed by, one Central Processing Unit, CPU, the AP comprises:

• a processing circuitry;
• and
• a memory circuitry storing computer program code which, when run in the processing circuitry, causes the AP to:
• receive, from the CPU, a message that the AP is selected to serve the terminal and data intended for said terminal;
• independently conduct power control, exclusively considering the terminals that are served by the AP itself;
• and
• transmit said intended data to the terminal.

A Central Processing Unit, CPU, configured to transmit data intended for a terminal in a cell-free massive Multiple-Input and Multiple-Output, MIMO, communications system, the CPU is being connected to, and managing, a cluster of Access Points, APs, and the cluster operates autonomously, the CPU comprising:

• a processing circuitry;
• and
• a memory circuitry storing computer program code which, when run in the processing circuitry, causes the CPU to:
• transmit, to all APs in the cluster, a message that the receiving APs are selected to serve the terminal and said data intended for the terminal.