Mobile Technology 

 

 

 

 

 

When we talk of the direction of communication, we often use the term Tx(transmission) and Rx(Reception). However, these terms cannot clearly indicates the direction of the communication since each mobile phone (or cell tower) can be both Tx and Rx depending on situation. So we need some terms that can indicate the direction of communication which does not change depending on situation. Downlink / Forward and Uplink / Reverse are the terms to indicate the direction of communication. If you are new to this area, you may often get confused even by this kind of simple terms.