What is uplink power control?

Abstract—Uplink power control is a key radio resource management function. It is typically used to maximize the power of the desired received signals while limiting the generated interference.

Is there power control in LTE?

The LTE power control mechanism constitutes of a closed loop component operating around an open loop point of operation. Specifically, the open loop component has a parameterized fractional path loss compensation factor, enabling a trade-off between cell edge bitrate and cell capacity.

What are the key requirement in uplink power in LTE?

UE MAX POWER It cannot transmit more than its maximum UE power which is commonly 23 dBm for most LTE UEs in the Uplink. The objective of the eNOdeB is that UE should transmit only enough power in the uplink in a range which is the minimum required amount. Neither more, nor less than that.

What is power control LTE?

Abstract: Uplink power control is a key radio resource management function. It is typically used to maximize the power of the desired received signals while limiting the generated interference. The LTE power control mechanism constitutes of a closed loop component operating around an open loop point of operation.

Does power control used in LTE DL Pdsch?

Downlink Rate Control (Power Control) In case of 4G LTE Downlink , rather than varying power in the Downlink, full power is distributed uniformly over the whole bandwidth. The same Power Spectral Density (PSD) is used on all DL channels. For example, PDSCH, PHICH, PDCCH etc.

What is closed loop control?

Closed Loop Power Control (CLPC) Measurement Description. Closed Loop Power Control (CLPC) measurement, as defined in TS 34.122 Section 5.4. 1.4, is used to test the ability of the UE transmitter to adjust its output power in accordance with one or more TPC commands received in the downlink.

What is open loop power control in LTE?

Enhanced LTE connectivity for drones LTE open-loop power control for Physical Uplink Shared Channel (PUSCH) is described in Section 9.3. 2.8. 1. The open-loop power control determines the transmit power level of PUSCH based on the parameters below. The higher the PUSCH bandwidth is, the higher the transmit power.

What is open loop and closed loop in LTE?

In Open Loop Control, UE determines its Transmission Power by its own Power Setting Algorithm. It means UE Transmission Power is controled by some feedback input from eNB. In this way, overall power control process form a loop (closed loop).

Why there is no DL power control in LTE?

In case of 4G LTE Downlink , rather than varying power in the Downlink, full power is distributed uniformly over the whole bandwidth. The same Power Spectral Density (PSD) is used on all DL channels.

What are some examples of closed loop systems?

Given below are 10 examples of closed loop control systems.

• Thermostat Heater.
• Sunseeker solar system.
• Voltage stabilizer.
• Missile Launcher.
• Auto Engine.
• Inverter AC.
• Automatic toaster.
• Turbine Water Control System at power Station.

How does a closed loop system work?

In a closed-loop system, a controller is used to compare the output of a system with the required condition and convert the error into a control action designed to reduce the error and bring the output of the system back to the desired response.