From the course: 4G LTE: Architecture, Protocols, Call Flows, KPIs, Optimization, Performance Analysis

Unlock this course with a free trial

Join today to access over 25,300 courses taught by industry experts.

Power control mechanisms in 4G LTE

Power control mechanisms in 4G LTE

From the course: 4G LTE: Architecture, Protocols, Call Flows, KPIs, Optimization, Performance Analysis

Start my 1-month free trial Buy for my team

Power control mechanisms in 4G LTE

“

Imagine you are in a crowded room. If you shout, you disturb others. It's like interference. If you whisper, no one hears you, which is like a weak signal. LTE powers control is like a smart volume knob, which adjusts your phone voice to be just right for the tower. Why are playing power control matters? Because it prevents interference, nearby users overpowering the distant ones. It saves battery life because no unnecessary high-power transmission happens in this case, and it maintains the signal quality to ensure reliable calls and data. Now, there are different types of power control. One is open-loop power control, another is a closed-loop power control. When do we use open-loop power control? It is used at the initial connection, for example, when your phone powers on. In this case, the tower sends a reference signal at a fixed power. Your phone measures the path loss. If the signal degradation over the distance, it calculates the required uplink power with which the UE need to…

Contents