- How BLER is calculated in LTE?
- What is LTE frame structure?
- What is HARQ in LTE?
- What is DCI in 5g?
- How does UE decode Pdcch?
- What is a good CQI in LTE?
- What is Pdsch?
- What is transmission mode in LTE?
- What is CCE in LTE?
- What does Pdcch carry?
- What is aggregation in accounting?
- What is Coreset in 5g?
- What is aggregation LTE level?
- How can I increase my Sinr in LTE?
- What is resource element LTE?
- What are the LTE logical transport and physical channels?
- What is DCI format in LTE?
- What is KPI in LTE?
How BLER is calculated in LTE?
BLER is measured after channel de-interleaving and decoding by evaluating the Cyclic Redundancy Check (CRC) on each transport block.
Block Error Rate (BLER) is used in LTE/4G technology to determine the in-sync or out-of-sync indication during radio link monitoring (RLM)..
What is LTE frame structure?
LTE uses a frame structure of frames & subframes – type 1 & type 2 LTE frames – to provide the synchronisation and location for the data being carried. … Using frames and subframes enables the data to be synchronised enabling the radio network to be able to handle the data correctly.
What is HARQ in LTE?
HARQ stands for Hybrid Automatic Repeat Request. HARQ = ARQ + FEC (Forward Error Correction)/Soft Combining. ARQ refers to Automatic Repeat Request i.e. if sender doesn’t receive Acknowledgement (ACK) before timeout, the receiver discards the bad packet and sender shall re-transmits the packet.
What is DCI in 5g?
Downlink Control Information (DCI) provides the UE with the necessary information such as physical layer resource allocation, power control commands, HARQ information for both uplink and downlink. DCI is transmitted on the Physical Downlink Control Channel (PDCCH) with 24-bit CRC attachment.
How does UE decode Pdcch?
The UE-specific search is carried out on four aggregation levels i.e. 1, 2, 4 and 8. The PDCCH candidates are generated using ltePDCCHSpace. If no CRC error is detected during a decoding attempt, the UE considers it a successful decoding and reads decoded DCI message.
What is a good CQI in LTE?
(LTE also has CQI for its own purpose). i) Current Communication Channel Quality is this-and-that.. In HSDPA, the CQI value ranges from 0 ~ 30. 30 indicates the best channel quality and 0,1 indicates the poorest channel quality.
What is Pdsch?
The Physical Downlink Shared Channel (PDSCH) is the physical channel that carries the DL-SCH coded data. This example shows the different stages involved in the Downlink Shared Channel (DL-SCH) and Physical Downlink Shared Channel (PDSCH) processing and provides access to the data from these intermediate stages.
What is transmission mode in LTE?
In LTE, usually they use multiple Antenna for downlink (at least from Category 3 UE and higher), meaning that eNode (Network) has use multiple Tx Antenna and UE use multiple Rx antenna. … In LTE, they give a special name for each of the way of transmission and it is called ‘Transmission Mode’.
What is CCE in LTE?
The E-UTRA CCE is a group of resources which can be used to send a PDCCH (Physical Downlink Control Channel). One, two, four or eight CCEs can be grouped to support larger messages. Each CCE consists of 9 REGs (Resource Element Group).
What does Pdcch carry?
PDCCH (Physical Downlink Control Channel) PDCCH carries DCIs and the DCI carries Transport format, resource allocation, H-ARQ information related to DL-SCH, UL-SCH and PCH. PDCCH also carries DCI 0 which is for UL Scheduling assignment (e.g, UL Grants).
What is aggregation in accounting?
What is Account Aggregation? Account aggregation is a process in which data from many—or all—of an individual’s or household’s financial accounts are collected in one place. It is also referred to as financial data aggregation.
What is 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. CORESET configuration in time spans 1-3 consecutive OFDM symbols.
What is aggregation LTE level?
The number of consecutive CCEs required to carry one PDCCH is called “Aggregation Level’. … It means that even the same DCI with exactly same bit length, the number of physical channel bits gets different depending on which PDCCH format it is carried by.
How can I increase my Sinr in LTE?
Signal Quality (SINR) In 4G LTE networks, signal quality is measured as SINR. Increasing your SINR can have a dramatic impact on your connection speeds. The best way to improve SINR is to use a directional outdoor antenna, either connected to a signal booster or directly to an LTE hotspot.
What is resource element LTE?
The smallest modulation structure in LTE is the Resource Element. A Resource Element is one 15 kHz subcarrier by one symbol. Resource Elements aggregate into Resource Blocks. … Twelve consecutive subcarriers in the frequency domain and six or seven symbols in the time domain form each Resource Block.
What are the LTE logical transport and physical channels?
The LTE transport channels vary between the uplink and the downlink as each has different requirements and operates in a different manner. Physical layer transport channels offer information transfer to medium access control (MAC) and higher layers.
What is DCI format in LTE?
DCI stands for downlink control information and there are various DCI formats used in LTE in PDCCH. The DCI format is nothing but a predefined format in which the downlink control information is packed/formed and transmitted in PDCCH. … The packed DCI information is the payload to the PDCCH encoding chain.
What is KPI in LTE?
Are used to measure the availability of network, suitable or ready for users to use services. 📈 Utilization KPI. Are used to measure the utilization of network, whether the network capacity is reached its resource. KPIs for LTE RAN (Radio Access Network)