Systems and methods are disclosed for coordinating transmission and reception of data according to multiple communication standards over a frequency band. In particular, one or more base stations/mobile electronic devices may determine a first data size of first data to be sent conforming to a first communication standard and a second data size of second data conforming to a second communication standard. A first time period may then be determined for which to send the first data based on the first data size, and a second time period may be determined for which to send the second data based on the second data size. In response to determining that the frequency channel is clear of other transmissions, the first data may be sent according to the first standard in the first time period, and the second data may be sent according to the second standard in the second time period.