Data transmission method and communication device

1. A data transmission method, comprising:

obtaining transmission parameters for transmitting a transport block, wherein the transmission parameters comprise Modulation and Coding Scheme (MCS), a Physical Resource Block (PRB) number, and PRB resource overhead information;

determining a Transport Block Size (TBS) for the transport block according to the transmission parameters; and

transmitting the transport block or receiving the transport block according to the TBS;

wherein the PRB resource overhead information is determined based on at least one of: Demodulation Reference Signal (DMRS), Channel State Information-Reference Signals (CSI-RS), and control channel information;

wherein the PRB resource overhead information is conveyed through physical layer Downlink Control Information (DCI) signaling and/or Radio Resource Control (RRC) signaling;

wherein the PRB resource overhead information comprises a number of REs that are not used for transmitting the transport block in each PRB.

2. The method according to claim 1 , wherein the PRB resource overhead information is determined based on CSI-RS and/or control channel information is conveyed through RRC signaling.

3. A communication device, comprising:

a processor, a transceiver, and a memory;

wherein the processor is configured to execute instructions stored by the memory;

wherein when the processor executes the instructions stored in the memory, the communication device is caused to:

obtain transmission parameters for transmitting a transport block, wherein the transmission parameters comprise Modulation and Coding Scheme (MCS), a Physical Resource Block (PRB) number, and PRB resource overhead information;

determine a Transport Block Size (TBS) for the transport block according to the transmission parameters; and

transmit the transport block or receive the transport block according to the TBS;

wherein the PRB resource overhead information is determined based on at least one of: Demodulation Reference Signal (DMRS), Channel State Information-Reference Signals (CSI-RS), and control channel information;

wherein the PRB resource overhead information is conveyed through physical layer Downlink Control Information (DCI) signaling and/or Radio Resource Control (RRC) signaling;

wherein the PRB resource overhead information comprises a number of REs that are not used for transmitting the transport block in each PRB.

4. The communication device according to claim 3 , wherein the PRB resource overhead information is determined based on CSI-RS and/or control channel information is conveyed through RRC signaling.

5. A chip, comprising:

an input interface, an output interface, and a processor, wherein the processor is configured to:

obtain transmission parameters for transmitting a transport block, wherein the transmission parameters comprise Modulation and Coding Scheme (MCS), a Physical Resource Block (PRB) number, and PRB resource overhead information;

determine a Transport Block Size (TBS) for the transport block according to the transmission parameters; and

instruct a transceiver to transmit the transport block or receive the transport block according to the TBS;

wherein the PRB resource overhead information is determined based on at least one of: Demodulation Reference Signal (DMRS), Channel State Information-Reference Signals (CSI-RS), and control channel information;

wherein the PRB resource overhead information is conveyed through physical layer Downlink Control Information (DCI) signaling and/or Radio Resource Control (RRC) signaling;

wherein the PRB resource overhead information comprises a number of REs that are not used for transmitting the transport block in each PRB.

6. The chip according to claim 5 , wherein the PRB resource overhead information is determined based on CSI-RS and/or control channel information is conveyed through RRC signaling.