Abstract
A control information transmission and reception method based on a spatial-multiplexing gain are provided. The control information may be transmitted by obtaining the spatial-multiplexing gain using an E-PDCCH region and thus a transmission efficiency of the control information may be improved. The common control information used for decoding the E-PDCCH may be transmitted via a PDCCH and thus a base station supporting both a general terminal and an enhanced terminal may effectively transmit the control information. Information associated with an indicator indicating whether the E-PDCCH is to be used during a subsequent resource allocation period may be transmitted and thus whether decoding with respect to the E-PDCCH is to be performed during the subsequent allocation period may be determined.
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