FIELD: physics, communications.
SUBSTANCE: invention relates to a mobile communication system for allocating resources between an uplink ACK/NACK channel and downlink control channel supporting spatial multiplexing in an orthogonal frequency division multiplexing (OFDM) based wireless communication system which configures the uplink ACK/NAK channel implicitly using reference signals for discriminating among resource allocation spaces and a physical channel resource.
EFFECT: method is capable of multiplexing an uplink ACK/NACK channel associated with a control channel extended by spatial multiplexing into an uplink ACK/NACK channel resource which does not support spatial multiplexing.
14 cl, 12 dwg
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