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

Claim 8:
9. A method, in a receiving device, of de-mapping control information from within a transmission time interval (TTI) for each of a plurality of transmissions of control information and user data received as Single-Carrier Frequency-Division Multiple Access (SC-FDMA) signals, where each of the plurality of transmissions 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 method comprising:
receiving, for each of the plurality of transmissions, an SC-FDMA signal;
determining, for each of the plurality of transmissions, whether user data received in the transmission is 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 received in the transmission is closest in time to DMRS transmitted before the user data, de-mapping all HARQ ACK/NACK data for the transmission from the earliest in time SC-FDMA symbol carrying user data in the transmission, and from post-despreading symbols that correspond to that SC-FDMA symbol and that are closest in time to the DMRS transmitted before the user data; and
for each of the plurality of transmissions in which user data received in the transmission is closest in time to DMRS transmitted after the user data, de-mapping all HARQ ACK/NACK data for the transmission from the last in time SC-FDMA symbol carrying user data in the transmission, and from post-despreading symbols that correspond to that SC-FDMA symbol and that are closest in time to the DMRS transmitted after the user data.