Method and Apparatus for Transmitting Baseband Signals

A method for transmitting baseband signals comprising:

• receiving indication information of a BBU corresponding to areas covered by multiple RRUs, wherein the indication information is used to indicate information about RRUs in an area among the areas covered by the multiple RRUs;
• generating a group of downlink baseband signals according to the indication information, wherein the group of downlink baseband signals corresponds to all RRUs in the area;
• and
• transmitting the group of downlink baseband signals to the BBU corresponding to the areas covered by the multiple RRUs, wherein the BBU corresponding to the areas covered by the multiple RRUs is configured to transmit the group of downlink baseband signals to each RRU in the area such that each RRU generates downlink radio frequency signals based on the downlink baseband signals and sends the downlink radio frequency signals.

A baseband unit (BBU) comprising:

• an information receiving module configured to receive indication information of a BBU corresponding to areas covered by multiple RRUs, wherein the indication information is used to indicate information about RRUs in an area among the areas covered by the multiple RRUs;
• a baseband signal generating module configured to generate a group of downlink baseband signals according to the indication information, wherein the group of downlink baseband signals corresponds to all RRUs in the area;
• and
• a transmitting module configured to transmit the group of downlink baseband signals to the BBU corresponding to the areas covered by the multiple RRUs, wherein the BBU corresponding to the areas covered by the multiple RRUs is configured to transmit the group of downlink baseband signals to each RRU in the area such that each RRU generates downlink radio frequency signals based on the downlink baseband signals and sends the downlink radio frequency signals.