Wireless Communication System Design

A method comprising:

• configuring one or more downlink short transmission time interval (sTTI) regions over a normal TTI region in a system bandwidth by a base station in a wireless network, wherein the resources in the sTTI regions have short TTI length;
• encoding one or more low latency control channels and one or more normal latency control channels, wherein each low latency control channel indicates one or more sTTI regions for one or more UEs in the wireless network;
• and
• transmitting radio resources, wherein the radio resources comprises one or more sTTI regions for one or more user equipment (UE).

A user equipment (UE), comprising:

• a radio frequency (RF) transceiver that transmits and receives radio signals in a wireless communication network;
• a transmission time interval (TTI) configurator that configures one or more downlink short TTI (sTTI) regions over a normal TTI region in a system bandwidth in a wireless network, wherein the resources in the sTTI regions have short TTI length;
• a decoder that decodes one or more low latency control channels and one or more normal latency control channels, wherein each low latency control channel indicates one or more sTTI regions for one or more UEs in the wireless network;
• and
• a resource locator that obtains one or more sTTI regions for the UE based on the decoded one or more low latency control channels and the one or more normal latency channels.