Configuration of transport block size
Embodiments of the present disclosure relate to methods, devices and computer readable storage medium for transport block size (TBS) configuration. In example embodiments, a terminal device transmits a random access preamble to a network device. The terminal device receives a random access response from the network device. The random access response includes a resource allocated for a reference TBS. Based on the reference TBS, the terminal device determines a TBS for transmitting data to the network device. Then, the terminal device transmits the data to the network device by using the determined TBS and the allocated resource. This TBS configuration is more flexible.
1. A method comprising:
at a terminal device,
transmitting a random access preamble to a network device;
receiving a random access response from the network device, the random access response including a resource allocated for a reference transport block size (TBS);
receiving, from the network device, an indication that TBS adjustment is enabled by the network device;
determining, based on the reference TBS and the indication that TBS adjustment is enabled by the network device, a TBS for transmitting data to the network device; and
transmitting the data to the network device by using the determined TBS and the allocated resource.
2. The method of claim 1 , wherein the random access response further includes the reference TBS.
3. The method of claim 1 , wherein determining the TBS comprises:
determining an amount of the data to be transmitted to the network device; and
determining the TBS based on the amount of the data and the reference TBS.
4. The method of claim 3 , wherein the amount of the data is determined in response to receiving the indication that the TB S adjustment is enabled by the network device.
5. The method of claim 3 , wherein determining the TBS based on the amount of the data and the reference TBS comprises:
determining a set of candidate TBSs associated with the reference TBS; and
selecting the TB S from the set of candidate TBSs based on the amount of the data.
6. The method of claim 5 , further comprising:
transmitting, to the network device, an indication that TBS selection is enabled by the terminal device.
7. The method of claim 1 , wherein transmitting the data comprises:
determining, from the allocated resource, a resource for transmitting the data; and
transmitting the data to the network device in the determined resource by using the determined TBS.
8. The method of claim 7 , wherein determining the resource comprises:
receiving, from the network device, an indication that resource adjustment is enabled by the network device; and
in response to receiving the indication that the resource adjustment is enabled by the network device, determining the resource from the allocated resource based on the determined TBS and the reference TBS.
9. The method of claim 8 , wherein the allocated resource includes a first reference number of repetitions, and determining the resource comprises:
determining, based on the first reference number of repetitions, the determined TB S and the reference TBS, the number of repetitions for transmitting the data.
10. The method of claim 9 , wherein determining the number of repetitions comprises:
determining a second reference number of repetitions based on the first reference number of repetitions, the determined TBS and the reference TBS;
determining a set of the candidate numbers of repetitions associated with the second reference number of repetitions; and
selecting the number of repetitions from the set of the candidate numbers of repetitions.
11. The method of claim 10 , wherein transmitting the data to the network device in the determined resource comprises:
determining a transmission power for the selected number of repetitions; and
transmitting the data to the network device by using the determined TBS, the determined number of repetitions and the determined transmission power.
12. The method of claim 11 , wherein determining the transmission power comprises:
receiving, from the network device, an indication that power adjustment is enabled by the network device; and
determining the transmission power based on the selected number of repetitions and the second reference number of repetitions.
13. The method of claim 1 , further comprising:
detecting a maximum TBS in system information, the maximum TBS being larger than the reference TBS.
14. A method comprising:
at a network device,
receiving a random access preamble from a terminal device;
transmitting a random access response to the terminal device, the random access response including a resource allocated for a reference transport block size (TBS) for data transmission of the terminal device;
determining a set of candidate TBSs associated with the reference TBS, wherein determining the set of candidate TBSs comprises at least receiving, from the terminal device, an indication that TBS selection is enabled by the terminal device; and
detecting data from the terminal device in the allocated resource based on the set of candidate TBSs associated with the reference TBS.
15. The method of claim 14 , wherein the set of candidate TBSs is determined in response to receiving the indication that the TBS selection is enabled by the terminal device.
16. The method of claim 14 , further comprising:
transmitting, to the terminal device, an indication that at least one of TBS adjustment, resource adjustment or power adjustment is enabled by the network device.
17. The method of claim 14 , further comprising:
broadcasting a maximum TBS in system information, the maximum TBS being larger than the reference TBS.
18. A device, comprising:
at least one processor; and
at least one memory including computer program code;
the at least one memory and the computer program code configured to, with the at least one processor, cause the device to:
transmit a random access preamble to a network device;
receive a random access response from the network device, the random access response including a resource allocated for a reference transport block size (TBS);
receive, from the network device, an indication that TBS adjustment is enabled by the network device;
determine, based on the reference TBS and the indication that TBS adjustment is enabled by the network device, a TBS for transmitting data to the network device; and
transmit the data to the network device by using the determined TBS and the allocated resource.
19. A device, comprising:
at least one processor; and
at least one memory including computer program code;
the at least one memory and the computer program code configured to, with the at least one processor, cause the device to:
receive a random access preamble from a terminal device;
transmit a random access response to the terminal device, the random access response including a resource allocated for a reference transport block size (TBS) for data transmission of the terminal device;
determine a set of candidate TBSs associated with the reference TBS, wherein determining the set of candidate TBSs comprises at least receiving, from the terminal device, an indication that TBS selection is enabled by the terminal device; and
detect data from the terminal device in the allocated resource based on the set of candidate TBSs associated with the reference TBS.