A downlink carries data or voice traffic outward from the network infrastructure to the subscriber's terminal, such as a mobile phone or satellite dish. In cellular networks, the downlink typically operates on a different frequency band or time slot than the uplink to prevent interference. Because users consume far more media than they create, networks are heavily optimized to provide vastly higher bandwidth on the downlink.
Heard on the job
The site is showing high interference on the LTE downlink, causing slow streaming speeds for users in that sector.