Uplink data splitting method, terminal device, and chip system

A terminal device, comprising:

• at least one processor;
• and
• a computer storage medium, wherein the computer storage medium stores instructions that, when executed by the at least one processor, cause the terminal device to perform operations including:
• determining a value of an ul-datasplit threshold in uplink data splitting parameters and an amount of data of the terminal device buffered at a packet data convergence protocol (PDCP) layer;
• and
• after the determining the value of the ul-datasplit threshold and after determining that a timer expires, determining, based on a first transmission capability of a long term evolution (LTE) link and a second transmission capability of a new radio (NR) link, a data amount of a data package transmitted on the LTE link and the NR link,
• wherein the determining the data amount of the data package transmitted on the LTE link and the NR link comprises:
• allocating the data amount of the data package based on the value of the ul-datasplit threshold, the amount of the data of the terminal device buffered, the first transmission capability of the LTE link, and the second transmission capability of the NR link,
• wherein the first transmission capability of the LTE link is determined by transmitting, by the terminal device, a first detection data package on the LTE link before the timer expires,
• wherein the second transmission capability of the NR link is determined by transmitting, by the terminal device, a second detection data package on the NR link before the timer expires, and
• wherein the second detection data package is a duplication of the first detection data package.

A chip system, wherein the chip system comprises:

• an application processor;
• and
• a baseband processor, wherein
• the application processor is configured to:
• generate a data package in response to a user operation;
• and
• the baseband processor is configured to:
• determine a value of an ul-datasplit threshold in uplink data splitting parameters and an amount of data of a terminal device buffered at a packet data convergence protocol (PDCP) layer;
• and
• after determining the value of the ul-datasplit threshold and after determining that a timer expires, determine, based on a first transmission capability of a long term evolution (LTE) link and a second transmission capability of a new radio (NR) link, a data amount of the data package transmitted on the LTE link and the NR link,
• wherein determining the data amount of the data package transmitted on the LTE link and the NR link comprises:
• allocating the data amount of the data package based on the value of the ul-datasplit threshold, the amount of the data of the terminal device buffered, the first transmission capability of the LTE link, and the second transmission capability of the NR link,
• wherein the first transmission capability of the LTE link is determined by transmitting a first detection data package on the LTE link before the timer expires,
• wherein the second transmission capability of the NR link is determined by transmitting a second detection data package on the NR link before the timer expires, and
• wherein the second detection data package is a duplication of the first detection data package.