Data packet transmission method and device

1. A data packet transmission method, comprising:

performing channel coding on a to-be-sent data packet, and dividing the coded data packet into at least two data sub-packets;

allocating a transmission resource to each data sub-packet;

generating control information for each data sub-packet according to transmission resources of the at least two data sub-packets, wherein the control information of each data sub-packet indicates the transmission resources of the at least two data sub-packets of the to-be-sent data packet, wherein the control information of each data sub-packet indicates a transmission resource of a first data sub-packet of the at least two data sub-packets;

sending each data sub-packet and the control information of the data sub-packet on a corresponding transmission resource;

receiving a control information of each data sub-packet;

decoding the received control information of each data sub-packet, to obtain at least two data sub-packets, comprising, when a transmission resource of a first data sub-packet of a first data packet is correctly obtained for the first time, obtaining, by a calculation according to the transmission resource of the first data sub-packet, at least one transmission resource used by at least one second data sub-packet of the first data packet, wherein the first data sub-packet is a data sub-packet that is sent first in the first data packet;

receiving a corresponding second data sub-packet on a transmission resource used by the at least one second data sub-packet; and

performing joint processing and decoding on the first data sub-packet and the at least one second data sub-packet, to obtain the first data packet sent by a transmit end.

2. The method according to claim 1 , wherein a transmission resource comprises a time resource and a frequency resource.

3. The method according to claim 1 , wherein the method further comprises:

determining a transmission format for each data sub-packet, wherein the transmission format comprises a modulation order and/or a coding redundancy version number; and

generating control information for each data sub-packet according to transmission resources of the at least two data sub-packets comprises:

generating the control information for each data sub-packet according to the transmission resources and transmission formats of the at least two data sub-packets, wherein the control information indicates the transmission formats of the at least two data sub-packets of the to-be-sent data packet.

4. A data packet transmission method, comprising:

receiving at least two data sub-packets and control information of each data sub-packet sent by a transmit end device, wherein the control information of each data sub-packet indicates transmission resources of the at least two data sub-packets of a data packet to which the at least two data sub-packets belong, wherein the control information of each data sub-packet indicates a transmission resource of the data sub-packet of the data packet to which the data sub-packet belongs;

decoding the received control information of each data sub-packet, to obtain the at least two data sub-packets, comprising, when a transmission resource of a first data sub-packet of a first data packet is correctly obtained for the first time, obtaining, by a calculation according to the transmission resource of the first data sub-packet, at least one transmission resource used by at least one second data sub-packet of the first data packet, wherein the first data sub-packet is a data sub-packet that is sent first in the first data packet;

receiving a corresponding second data sub-packet on a transmission resource used by the at least one second data sub-packet; and

performing joint processing and decoding on the first data sub-packet and the at least one second data sub-packet, to obtain the first data packet sent by the transmit end device.

5. The method according to claim 4 , wherein the transmission resource comprises a time resource and a frequency resource.

6. The method according claim 4 , wherein the control information of each data sub-packet indicates transmission formats of the at least two data sub-packets, and the transmission formats comprise a modulation order and/or a coding redundancy version number.

7. The method according to claim 4 , wherein when the control information of each data sub-packet comprises a transmission resource of each data sub-packet, decoding the control information of each data sub-packet, to obtain at least two data sub-packets, and performing joint processing on the at least two data sub-packets, to obtain the first data packet sent by the transmit end device comprises:

when the control information of the data sub-packet is correctly obtained, obtaining, according to the control information, the transmission resource of each data sub-packet of the first data packet;

receiving at least one data sub-packet on each transmission resource other than the transmission resource used for a current transmission; and

performing joint processing and decoding on the at least two data sub-packets, to obtain the first data packet sent by the transmit end device.