A wireless device receives a broadcast message comprising first parameters identifying a first set of subframes on a first carrier as almost blank subframes. The wireless device receives at least one unicast control message comprising: second parameters identifying a second set of subframes on a second carrier as almost blank subframes, a first measurement subframe allocation bitmap identifying a first measurement subframes, and a second measurement subframe allocation bitmap identifying a second measurement subframes. The wireless device transmits first channel state information (CSI) being measured on the first measurement subframes and second CSI being is measured the second measurement subframes.