Aspects described herein relate to configuring radio resources of a control channel for use by base stations and wireless devices. According to some embodiments, one or more control messages may be transmitted by a base station and/or received by a wireless device. The control messages may comprise configuration parameters for the radio resources of the control channel. Exemplary configuration parameters may include an indication of one or more subframes in a frame on a carrier, an indication of a starting symbol corresponding to the control channel in the one or more subframes, and one or more frequency resource parameters for non-overlapping sets of resource blocks in the one or more subframes.