Patent ID: 11863329
Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 4:
5. A user equipment (UE) configured to map control information within a transmission time interval (TTI) for each of a plurality of transmissions of control information and user data as Single-Carrier Frequency-Division Multiple Access (SC-FDMA) signals, wherein each transmission comprises one or more SC-FDMA symbols and where the control information in each transmission comprises at least Hybrid Automatic Repeat-Request (HARQ) ACK/NACK data, the UE comprising:
processing circuitry configured to:
determine, for each transmission, whether user data to be transmitted in the transmission will be closest in time to a demodulation reference signal (DMRS) transmitted before the user data or to a DMRS transmitted after the user data;
for each of the plurality of transmissions in which user data to be transmitted in the transmission will be closest in time to DMRS transmitted before the user data, map all HARQ ACK/NACK data for the transmission to the earliest in time SC-FDMA symbol carrying data within the transmission, and to pre-Discrete-Fourier Transform (pre-DFT) symbols that correspond to that SC-FDMA symbol and that are closest in time to the DMRS transmitted before the user data;
for each transmission in which user data to be transmitted in the transmission will be closest in time to DMRS transmitted after the user data, map all HARQ ACK/NACK data for the transmission to the last in time SC-FDMA symbol carrying user data within the transmission, and to pre-DFT symbols that correspond to that SC-FDMA and that are closest in time to the DMRS transmitted after the user data; and
form, for each of the plurality of transmissions, an SC-FDMA signal from the user data and control information for the transmission, based on the mapping of the HARQ ACK/NACK data; and
transmitter circuitry configured to transmit the SC-FDMA signals.