Glossary  >  Uplink




Uplink is a radio communications term used to denote the link from a user device, such as your phone, to a cell tower or network. When using your phone, it communicates with your network provider’s cell tower by sending and receiving signals. Uplink refers to the communication link that allows you to send signals from your phone to the tower.

Think of it like this—an uplink is the path from your phone to your carrier’s cell tower, and the frequency used to carry information on this path is called an uplink frequency. However, uplink forms only half of the communication between your phone and cell tower. The other half is downlink, which refers to the path from the cell tower to your phone. It’s these signals that allow you to make calls, send texts, and access the internet.

Cell phone signal boosters amplify the downlink and uplink signals to improve call quality, reduce dropped calls, and increase internet speed.

Example of Uplink in a sentence:

"GSM cellular networks use frequencies between 890 MHz and 915 MHz as their uplink frequency."

Synonyms: upload, upstream

Related Terms for Uplink: