Antenna allocation apparatus and method for cellular mobile communication system

A method for allocating antennas performed by a User Equipment (UE) in a cellular communication system, the method comprising:

• receiving, from a base station through UE-specific signaling after an initial access attempt with the base station, information indicating a configuration of a plurality of Channel Status Information Reference Signals (CSI-RSs), corresponding to distributed ports (D-ports) in a D-port superset;
• transmitting, to the base station, received signal strengths of CSI-RSs that are measured based on the received information indicating the configuration;
• receiving, from the base station CSI-RSs of a set of available D-ports, the set of available D-ports being a candidate D-port set that is a subset of the D-port superset;
• feeding back, to the base station, results of measurements of the CSI-RSs of the set of available D-ports;
• and
• receiving, through data communication with the base station, downlink data transmitted through a selected D-port set, the selected D-port set being an active D-port set including D-ports for use in communication.

A method for allocating antennas performed a base station in a cellular mobile communication system, the method comprising:

• sending, to a User Equipment (UE), a request for transmission of a Sounding Reference Signal (SRS) during an initial access attempt;
• measuring signal strength of the requested SRS received through a Central port (C-port) and Distributed ports (D-ports);
• transmitting, through UE-specific signaling, information indicating a configuration of Channel Status Information Reference Signals (CSI-RSs) of an available D-port set configured based on the measured signal strength and transmission power of the SRS, the CSI-RSs of the available D-port set being a subset of a D-port superset that includes all D-ports of a cell;
• and
• determining a CSI-RS of a selected D-port set based on feedback information received from the UE, the selected D-port set being an active set including D-ports for use in communication.