Downlink意思

"Downlink" is a term used in telecommunications, particularly in the context of satellite communications, to refer to the signal transmission from a satellite back to Earth. In a satellite communication system, there are two main links: uplink and downlink.

The downlink frequency is the radio frequency at which the satellite sends information back to Earth. The downlink signal typically contains the data or information that the satellite has received from other satellites or from ground stations, and it is sent to specific ground stations for reception and further distribution.

Downlink can also be used more broadly to refer to the transmission of data from a source to a destination, especially in wireless communication systems like cellular networks, where the term might refer to the transmission from a base station to a mobile device.