Data transmission method and apparatus

Abstract

Embodiments of the present application disclose a data transmission method and device. In the method, a communication module sends a first data packet through a first network card, the first network card being arranged in an embedded access point module in the communication module; a host sends a second data packet through a second network card, the second data packet being obtained by changing a source address of the first data packet from an Internet Protocol address of the first network card to an Internet Protocol address of a wireless wide area network card, the second network card being arranged in the host, and the wireless wide area network card being arranged in the host; the host sends the second data packet to a data network card in a baseband module in the communication module through the wireless wide area network card, and the data network card is used for transmitting the second data packet to a network. It can be seen that the host can forward the data packet from the first network card in the embedded access point module to a data link of the wireless wide area network card and the data network card, so that the embedded access point module can be connected with the network and data transmission can be performed.