Downlink control information design with shorter TTI

A non-transitory computer-readable storage medium that stores instructions for execution by one or more processors of a user equipment (UE), the instructions to configure the one or more processors to cause the UE to:

• decode signaling enabling shorter transmission time interval (S-TTI) mode during a time window, the time window comprising a plurality of S-TTIs forming a single TTI;
• monitor during the S-TTI mode, a shorter physical downlink control channel (S-PDCCH) within one or more of the plurality of S-TTIs;
• decode scheduling information received via the S-PDCCH within one of the plurality of S-TTIs;
• and
• encode data for transmission on a shared data channel based on the scheduling information.

An apparatus comprising:

• at least one processor, configured to cause a base station to:
• determine a duration of a time window, the time window comprising a plurality of shorter transmission time intervals (S-TTIs) forming a single TTI;
• encode higher layer signaling indicating the determined duration and causing activation of S-TTI monitoring mode associated with a cell of the base station during the determined duration;
• encode scheduling information for transmission using a shorter physical downlink control channel (S-PDCCH) within the plurality of S-TTIs, wherein the scheduling information comprises uplink (UL) or downlink (DL) scheduling grant for a plurality of users equipments (UEs) associated with the cell;
• and
• decode data received on a shared data channel in response to the scheduling information.