Patent ID: 11962423
Assignee: BEIJING UNISOC COMMUNICATIONS TECHNOLOGY CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A data transmission method, comprising:
in an unlicensed frequency band of 5G New Radio (NR), a User Equipment (UE) transmitting uplink data and associated Uplink Control Information (UCI) to a base station through Autonomous UpLink (AUL) transmission;
the base station identifying the UE through UE specific Demodulation Reference Signal (DMRS);
the base station decoding the UCI;
in response to the UCI being not successfully decoded, the base station decoding the uplink data;
based on whether a transport block or a Code Block Group (CBG) is successfully decoded, the base station transmitting Downlink Feedback Information (DFI) to the UE, wherein the DFI comprises first information that is used to indicate a location of the successfully decoded CBG;
the UE receiving the DFI;
the UE using the first information to determine Hybrid Automatic Repeat reQuest-IDentity (HARQ-ID) of a transport block where the CBG that needs to be retransmitted is located, and a sequence number of the CBG that needs to be retransmitted in a HARQ of the transport block where the CBG that needs to be retransmitted is located; and
the UE performing scheduling-free retransmission for the CBG.