US Patent 10172015 Channel dependent coverage enhancement techniques in LTE

Methods, systems, and devices are described for coverage enhancement in a wireless communication system. A base station may select different coverage enhancement techniques for different channels, and transmit the channels using the selected coverage enhancement techniques. Examples of coverage enhancement techniques that may be selected include repetition within subframes, repetition across different subframes, power boosting, and spatial multiplexing. These and other techniques may be used alone or in combination. In some examples, a user equipment (UE) may determine a coverage enhancement need and may monitor a control channel accordingly.