Method and apparatus for determining transport block size

A method for use by a network device in sending or receiving a data channel, comprising:

• determining a modulation order and a code rate of the data channel;
• determining modulation indication information according to a mapping relationship set and a combination of the modulation order and the code rate, wherein the mapping relationship set comprises a correspondence between the modulation indication information and a combination of the modulation order and the code rate;
• sending control information to a terminal device, wherein the control information comprises the modulation indication information and resource information of the data channel, and wherein the resource information is used for determining quantity of time-frequency resources for carrying the data channel;
• determining an intermediate transport block size (TBS) according to the modulation order, the code rate, the quantity of time-frequency resources for carrying the data channel, and quantity of transport layers of the data channel;
• and
• determining a TBS according to the intermediate TBS;
• wherein when the intermediate TBS is less than or equal to a reference threshold, the TBS is determined to be a value in a value set;
• wherein, according to the determined TBS, the network device decodes the data channel carried on the time-frequency resources or sends the data channel on the time-frequency resources.

An apparatus, comprising one or more processing circuits configured to:

• obtain control information from a network device, wherein the control information comprises modulation indication information and resource information of a data channel;
• determine a modulation order and a code rate according to a mapping relationship set and the modulation indication information wherein the mapping relationship set comprises a correspondence between the modulation indication information and a combination of the modulation order and the code rate;
• determine quantity of time-frequency resources for carrying the data channel according to the resource information;
• determine an intermediate transport block size (TBS) according to the modulation order, the code rate, the quantity of time-frequency resources for carrying the data channel, and quantity of transport layers of the data channel;
• and
• determine a TBS according to the intermediate TBS;
• wherein when the intermediate TBS is less than or equal to a reference threshold, the TBS is determined to be a value in a value set;
• wherein, according to the determined TBS, the data channel carried on the time-frequency resources is decoded, or the data channel is sent on the time-frequency resources.

A network device, comprising a processor and a transceiver;

• wherein the processor is configured to:
• determine a modulation order and a code rate of a date channel;
• and
• determine modulation indication information according to a mapping relationship set and a combination of the modulation order and the code rate, wherein the mapping relationship set comprises a correspondence between the modulation indication information and a combination of the modulation order and the code rate;
• the transceiver is configured to:
• send control information to a terminal device, wherein the control information comprises the modulation indication information and resource information of the data channel, and wherein the resource information is used for determining quantity of time-frequency resources for carrying the data channel;
• the processor is further configured to:
• determine an intermediate transport block size (TBS) according to the modulation order, the code rate, the quantity of time-frequency resources for carrying the data channel, and quantity of transport layers of the data channel;
• and
• determine a TBS based on the intermediate TBS;
• wherein when the intermediate TBS is less than or equal to a reference threshold, the TBS is determined to be a value in a value set;
• wherein, according to the determined TBS, the network device decodes the data channel carried on the time-frequency resources or sends the data channel on the time-frequency resources.

A non-transitory computer readable medium storing instructions, wherein by executing the instructions, an apparatus is configured to perform a method that comprises:

• obtaining control information from a network device, wherein the control information comprises modulation indication information and resource information of a data channel;
• determining a modulation order and a code rate according to a mapping relationship set and the modulation indication information, wherein the mapping relationship set comprises a correspondence between the modulation indication information and a combination of the modulation order and the code rate;
• determining quantity of time-frequency resources for carrying the data channel according to the resource information;
• determining an intermediate transport block size (TBS) according to the modulation order, the code rate, the quantity of time-frequency resources for carrying the data channel, and quantity of transport layers of the data channel;
• determining a TBS according to the intermediate TBS, wherein when the intermediate TBS is less than or equal to a reference threshold, the TBS is determined to be a value in a value set;
• and
• according to the determined TBS, decoding the data channel carried on the time-frequency resources or sending the data channel on the time-frequency resources.

A non-transitory computer readable medium storing instructions, wherein by executing the instructions, an apparatus is configured to perform a method that comprises:

• determining a modulation order and a code rate of a data channel;
• determining modulation indication information according to a mapping relationship set and a combination of the modulation order and the code rate, wherein the mapping relationship set comprises a correspondence between the modulation indication information and a combination of the modulation order and the code rate;
• sending control information to another apparatus, wherein the control information comprises the modulation indication information and resource information of the data channel, and wherein the resource information is used by the other apparatus to determine quantity of time-frequency resources for carrying the data channel;
• determining an intermediate transport block size (TBS) according to the modulation order, the code rate, the quantity of time-frequency resources for carrying the data channel, and quantity of transport layers of the data channel;
• determining a TBS according to the intermediate TBS;
• wherein when the intermediate TBS is less than or equal to a reference threshold, the TBS is determined to be a value in a value set;
• and
• according to the determined TBS, decoding the data channel carried on the time-frequency resources or sending the data channel on the time-frequency resources.