PDCCH

PDCCH carries the control information about the data being transmitted on the current subframe and the information about the resources which UE need to use for the uplink data. That means it is mandatory for the UE to decode it successfully if it wants to send some data or receive something.

PDCCH carries a message called DCI (Downlink Control Information) which includes resource assignments for a UE or group of UE’s. EnodeB can transmit many DCI’s or PDCCH’s in a subframe.

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