SCALABLE SPUCCH DESIGN FOR LOW LATENCY LTE OPERATION
A configuration is received indicating a UE is to operate in a reduced latency mode. The UE determines uplink control information to be reported using a short physical uplink control channel. The UE determines a short physical uplink control channel resource for transmitting the uplink control information. The determined short physical uplink control channel resource is a reduced latency mode physical uplink control channel resource. The short physical uplink control channel resource comprises a first and a second instance of LTE Rel-8 length 12 uplink DMRS sequence transmitted in one or more DFT-S-OFDM symbols on a first physical resource block, followed by a third and a fourth instance of LTE Rel-8 length 12 uplink DMRS sequence transmitted in one or more DFT-S-OFDM symbols on a second physical resource block. The UE transmits the uplink control information on the determined reduced latency mode physical uplink control channel resource.