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.
What is uplink power control in LTE?
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.
What are the key requirements in applying 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.
What is TPC command in LTE?
This kind of power control mechanism is often called “Closed Loop Power Control” and the special command being used for power control is called TPC (Transmit Power Control) command. In short, Transmit send something and the reciever send a feedback to the transmitter and the reciever retunes itself by the feedback.
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 power headroom LTE?
What is Power Headroom? Power headroom indicates how much transmission power left for a UE to use in addition to the power being used by current transmission. eNodeB (Network) use this report value to estimate how much uplink bandwidth a UE can use for a specific subframe.
What is Tx power in LTE?
RS Tx. Power (Avg) is the average cell-specific reference signal power on the reference measurement channel for the data in the Measurement Interval. This data result can be used to calculate RSTP as defined in 3GPP TS 36.141 Section F. This data result is only applicable to downlink signals.
What is reference signal power in LTE?
Reference signal received power (RSRP), is defined as the linear average over the power contributions of the resource elements that carry cell-specific reference signals within the considered measurement frequency bandwidth.
What is open loop power control?
Open Loop Power Control Measurement Description 1.3, the open loop power control is the ability of the UE transmitter to sets its output power to a specific value. The open loop power control measurement can only be initiated when the Operating Mode is Active Cell and the call status is Idle.
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 is paging in LTE?
Paging in LTE network is used to inform and notify UE about various events. The propose of paging procedure is: To inform UEs in RRC_IDLE and UEs in RRC_CONNECTED state about a system information change. To inform UE about ETWS primary notification and ETWS secondary notification.
Where does power control take place in LTE?
Let’s focus our discussion on Power Control in LTE for now. In LTE , Power control takes place both in Downlink and Uplink. They way it takes place in Downlink and Uplink will become evident in a little bit , as we go further down the discussion. However, a picture is worth thousand words.
How does uplink power control work in LTE?
In LTE, the standardized uplink power control formula contains an open loop component and a closed loop component. In open loop power control (OLPC), the transmitting power is set at the user equipment (UE) using parameters and measures obtained from signals sent by the base station.
How does closed loop power control work in LTE?
In LTE, closed loop power control operates around an open loop point of operation. The initial power is set using open loop power control. The initial power is further adjusted using closed loop correction value. Equation (11) defines the closed loop power control expression.
How does power control work in 4G DL?
In case of 4G DL, 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.