DATA TRANSMISSION METHOD AND APPARATUS

A data transmission method and an apparatus are provided, to resolve a problem that network communication between a communications apparatus and an external network device cannot be ensured. A network protocol stack is deployed on both a wireless communications unit and a service processing unit, and the wireless communications unit is responsible for distribution. This can ensure processing of a network service and a throughput of a wireless network when a processing capability of the wireless communications unit is weak. The network protocol stack is deployed on the wireless communications unit. When the service processing unit is powered off, the wireless communications unit can still communicate with an external device, for example, remote wakeup. In addition, a network application can be independently developed for the wireless communications unit, and service deployment is also easier for a low-power-consumption wireless communications unit. The network protocol stack is deployed on the service processing unit. After being powered on, the service processing unit can independently exchange a network data packet (for example, an audio/video stream) with the external device. A network application can be independently developed for the service processing unit, and service deployment is also easier for the service processing unit.