What is LTE power boost?

Power boosting in LTE is mainly perform on the Reference signal. By increasing the number of Resources element being used as Reference Signal, the RS can be “boosted’ by 2x (3dB), 3x (4.7dB) or 4x (6dB) accordingly. Power Boosting value = 0 if there is no extra resources used.

What is Ng factor in Phich?

Allocation (Ng) is a higher layer parameter configured from the set {1/6, 1/2, 1, 2} that determines the number of PHICH groups per subframe. The number of PHICH groups in a subframe is given by the equation for NgroupPHICH in Section 6.9 of 3GPP TS 36.211.

What is Pdcch and Pdsch?

The PDCCH is used for control information while the PDSCH carries the actual data. For example, if the UE has data in the PDSCH, it needs to know where the data is located. The PDCCH will tell the UE that the data it is looking for is located at this location on PDSCH.

Why is there no Phich in 5G?

5G NBIOT LTE Question Answers PHICH channel is used in LTE to handle uplink re-transmissions and are tightly coupled to use of synchronous hybrid-ARQ protocol, but as the HARQ protocol is asynchronous in NR in both downlink as well as uplink. Hence the PHICH is not required in NR.

What are channels in LTE?

What is a Channel in LTE? The information flows between the different protocols layers are known as channels. These are used to segregate the different types of data and allow them to be transported across different layers.

How is LTE Rsrp calculated?

Maximum RSRP value can be calculated based on maximum input UE power UE which is -25 dBm and minimal LTE bandwidth which is 1.4 MHz, i.e. 72 resource elements. Then -25 – 10*LOG(72) = -44 dBm. Absolute RSRP measurement accuracy is between ±6 and ±8 dB.

What is LTE Pucch?

In LTE, data can be transmitted from the eNodeB to the UE via a physical downlink shared channel (PDSCH). A physical uplink control channel (PUCCH) can be used to acknowledge that data was received.

What is a Coreset in 5G?

In 5G NR, CORESET is known as Control Resource Set. It is a set of physical resources within a specific area in Downlink Resource Grid and used to carry PDCCH (DCI). Frequency allocation in a CORESET configuration can be contiguous or non-contiguous.

What is Harq in 5G?

Introduction. 5G NR (New radio) has several retransmission systems using three different layers in the protocol stack: MAC protocol: It implements a fast retransmission system with delay less than 1ms in new radio, called HARQ (Hybrid Automatic Repeat reQuest).

What is Pcfich LTE?

The Physical Control Format Indicator Channel(PCFICH) is one among the downlink physical control channel and it carries the number of OFDM symbols used by the PDCCH channel, denoted as Control Format Indicator(CFI). These control channels play a key role in the correct decoding of the payload information.

What does phich stand for in LTE quick reference?

LTE Quick Reference Go Back To Index Home : www.sharetechnote.com. PHICH/PHICH Group. PHICH stands for Physical channel HybridARQ Indicator Channel. Simply put, it is a secially designed downlink only channel which carries ACK or NACK for the PUSCH received by the network.

Why is the pcfich so important in LTE?

PCFICH or Physical Control Format Indicator channel is one of the physical control channel in LTE. The PCFICH is a very important control channel for several reasons. In a sense, it can be considered the heart of control channel, because unless the UE or User Equipment decodes the PCFICH it cannot decode any other control or data channels.

How many bits does LTE pcfich channel occupy?

As shown in the figure, LTE PCFICH channel occupies 16 REs (Resource Elements) in first OFDMA symbol of each 1ms frame. PCFICH uses QPSK modulation and hence 16 REs will occupy 32 bits. This 16REs are divided into 4 quadruplets.

Where does power control take place in LTE?

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.