Data transmission method, terminal, and ran device

A device, comprising a processor, configured to:

• receive, in a discontinuous reception (DRX) active period, first grant information from a radio access network (RAN) device, wherein the first grant information is used for initial transmission grant of first data;
• send or receive the first data by using the initial transmission grant of the first data;
• start, after sending or receiving the first data, a retransmission active time in which the device expects to receive a retransmission grant for the first data;
• receive, in the retransmission active time, second grant information from the RAN device, wherein the second grant information is used for initial transmission grant of second data;
• and
• remain in an active state in an activation extension time that is in response to receiving of the second grant information.

A radio access network (RAN) device, comprising a processor, configured to:

• send first grant information to a terminal in a DRX active period, wherein the first grant information is used for initial transmission grant of first data;
• and
• receive or send the first data by using the initial transmission grant of the first data;
• determine a retransmission active time in which the terminal expects to receive a retransmission grant for the first data;
• and
• send second grant information to the terminal in the retransmission active time, wherein the second grant information is used for initial transmission grant of second data, wherein the second grant information is used for triggering terminal to remain in an active state in an activation extension time.

A non-transitory computer readable medium comprising a program, wherein when the program is executed by a processor, the following steps are performed:

• receiving, in a discontinuous reception (DRX) active period, first grant information sent by from a radio access network (RAN) device, wherein the first grant information is used for initial transmission grant of first data;
• sending or receiving the first data by using the initial transmission grant of the first data;
• starting, after sending or receiving the first data, a retransmission active time in which a terminal expects to receive a retransmission grant for the first data;
• receiving, in the retransmission active time, second grant information from the RAN device, wherein the second grant information is used for initial transmission grant of second data;
• and
• remaining in an active state in an activation extension time that is after in response to receiving of the second grant information.