Signal processing device and data transmission method

A second signal processing device, comprising:

• a first baseband circuit, configured to generate time domain data, wherein a quantity of antenna channels corresponding to the time domain data is a first quantity;
• a conversion circuit, configured to convert the time domain data into first Ethernet data;
• and
• an interface, configured to transmit the first Ethernet data to a first signal processing device through an optical fiber.

A communication system, comprising:

• a first signal processing device;
• and
• a second signal processing device, wherein the first signal processing device and the second signal processing device are connected through an optical fiber;
• wherein the first signal processing device comprises:
• a first interface, configured to perform Ethernet data transmission with the second signal processing device through the optical fiber;
• a scheduling circuit, configured to schedule to-be-processed data to a first processing circuit or a second processing circuit based on transmission configuration information from the second signal processing device, and wherein the to-be-processed data comprises Ethernet data from the second signal processing device or uplink data from an antenna;
• the first processing circuit, configured to process the to-be-processed data from the scheduling circuit according to a first splitting mode;
• the second processing circuit, configured to process the to-be-processed data from the scheduling circuit according to a second splitting mode;
• and
• the antenna, configured to send processed data of the first processing circuit or the second processing circuit, or receive the uplink data;
• and
• wherein the second signal processing device comprises:
• a first baseband circuit, configured to generate time domain data, wherein a quantity of antenna channels corresponding to the time domain data is a first quantity;
• a conversion circuit, configured to convert the time domain data into first Ethernet data;
• and
• a second interface, configured to transmit the first Ethernet data to the first signal processing device through the optical fiber.