Selection of DCI based upon TTI

A wireless device comprising:

• one or more processors;
• memory storing instructions that, when executed by the one or more processors, cause the wireless device to:
• receive one or more messages comprising configuration parameters for a cell;
• receive, in a first transmission time interval (TTI), a first downlink control information (DCI) comprising:
• a first field indicating a first resource block assignment;
• and
• a first trigger field indicating whether the first DCI is a first triggered DCI;
• receive, in a second TTI, a second DCI comprising:
• a second field indicating a second resource block assignment;
• and
• a second trigger field indicating whether the second DCI is a second triggered DCI;
• receive, in a third TTI and via a common control channel of the cell, a third DCI comprising a field indicating a trigger;
• and
• transmit, in response to the trigger, at least one transport block employing one of the first DCI or the second DCI that is selected at least based on a timing of the first TTI or the second TTI.

A method comprising:

• transmitting, by a base station, one or more messages comprising configuration parameters for a cell;
• transmitting, in a first transmission time interval (TTI), a first downlink control information (DCI) comprising:
• a first field indicating a first resource block assignment;
• and
• a first trigger field indicating whether the first DCI is a first triggered DCI;
• transmitting, in a second TTI, a second DCI comprising:
• a second field indicating a second resource block assignment;
• and
• a second trigger field indicating whether the second DCI is a second triggered DCI;
• transmitting, in a third TTI and via a common control channel of the cell, a third DCI comprising a field indicating a trigger;
• and
• receiving, by the base station, in response to the trigger, at least one transport block employing one of the first DCI or the second DCI that is selected at least based on a timing of the first TTI or the second TTI.