Data transmission method and terminal, and computer-readable medium

A terminal that establishes a communication connection with a correspondent node through a first link provided by a cellular network and a second link provided by a Wireless Local Area Network (WLAN), respectively, the terminal comprising:

• a processor;
• and
• a memory for storing instructions executable by the processor,
• wherein the processor is configured to:
• determine a current amount of data in an uplink buffer that is configured to store uplink data, wherein the uplink data in the uplink buffer is distributed through a Packet Data Convergence Protocol (PDCP) layer;
• send a Buffer Status Report (BSR) to a base station in the cellular network, wherein the BSR comprises a difference value between the current amount of data and an amount of the data to be transmitted by the second link, and wherein the base station is configured to allocate an uplink resource for the terminal based on the difference value;
• and
• transmit uplink data to the correspondent node through the second link based on the amount of the data to be transmitted to the correspondent node by the second link.

A non-transitory computer-readable medium storing instructions that, when executed by one or more processors of a device that establishes a communication connection with a correspondent node through a first link provided by a cellular network and a second link provided by a Wireless Local Area Network (WLAN), respectively, cause the device to:

• determine a current amount of data in an uplink buffer that is configured to store uplink data, wherein the uplink data in the uplink buffer is distributed through a Packet Data Convergence Protocol (PDCP) layer;
• send a Buffer Status Report (BSR) to a base station in the cellular network, wherein the BSR comprises a difference value between the current amount of data and an amount of the data to be transmitted by the second link, and wherein the base station is configured to allocate an uplink resource for the terminal based on the difference value;
• and
• transmit uplink data to the correspondent node through the second link based on the amount of the data to be transmitted to the correspondent node by the second link.