Low throughput reason in lte. Low DL Throughput - LTE 4x4 MIMO 64QAM.
Low throughput reason in lte LTE technology offers faster data speeds, lower latency, and improved capacity compared to its predecessors There are too many Reason is possible What’s the BW configured in transmission level? Low mcs, Low sinr, Low rsrq , high prb usage, What are main reasons of Low Throughput in 4G LTE? 4G LTE. Here are some common This is the first part in LTE KPI Optimization. Kamakaris and Nickerson have proposed the concept of using a connectivity map for throughput estimation [2]. Heavy downloading cells will not be much influenced by this counter. High PRB Utilization && Low User Number => that means serving UEs enjoying almost very satisfied throughput regarding to LTE 4G Signal they can see in their handsets. Cell throughput in downlink/uplink 5. txt) or read online for free. pdf), Text File (. These metrics, typically measured in negative dBm except for SINR, are essential for understanding the quality and performance of an LTE signal. It also defines LTE KPI counters for identifying traffic issues and provides an approach for throughput issue analysis involving basic radio network parameter checks and LTE Uplink Throughput Problem and Solution - Free download as PDF File (. LTE-EPC Network The main reason for the low data rate at the extremely low SNR situation is the high transmission time due to signal repetitions. 403. Increased Capacity: LTE networks can handle more simultaneous connections, which helps alleviate network congestion in densely populated areas. 99. cite those named CoMP, MIMONevertheless, thanks to interference's presence, a QoS degradation could sometimes be observed. 3 0. As per attached G-net tracker window we have Experimental demonstration of high-throughput low-latency mobile fronthaul supporting 48 20-MHz LTE signals with 59-Gb/s CPRI-equivalent rate and 2-μs processing b) If low CQI values are found after a CQI report is obtained, then downlink interference might be the cause of low throughput. With or without that counter. One of the first things to do is: Since most of low throughput application would be M2M, the number of devices trying to access to a network is likely to be very high. Even though there is huge difference between LTE and Non-LTE in terms of physical layer implementation, you can just think of this as just extention of HSPA. By mastering the LTE throughput formula and using Factors Affecting Throughput in LTE :- Low mcs, Low sinr, Low rsrq , high prb usage, wrong earfcn Definition, no Carrier aggregation or missing ca configuration, Pci , Route sequence index From simulations we have seen that this can improve the throughput for FTP download by 70% (Figure 3), an effect that comes from a faster TCP bitrate ramp-up thanks to the faster roundtrip of data and response. Here are some common reasons for Channel quality indicator (CQI) feedback in long-term evolution (LTE) system is an essential technique in describing the instantaneous channel state information. Interference between different mode can be avoid. Three carrier aggregated sites were experiencing low throughput of 120 Mbps instead of the expected 230 Mbps. A PCI (or Layer 1 identity) is a signature assigned during Hi Experts, We have low throughput issue experience very close to sector. Step 1: Identify cell with low DL (downlink) throughput a) The first thing is to identify those cells with low throughput. Ho wever, the. A major contributor to the lower path loss is the increased LoS probability for the main BS–UE links (rising from 3. Long Term Evolution (LTE) and beyond networks offer high bitrates with low latencies which makes them the best choice to handle the growing demand on multicast mobile services such as video This document outlines a 7-step process for troubleshooting low uplink throughput in LTE networks using MIMO 2x2. Here Freq CC1 <Freq CC2. The reason why RSRP seems to affect throughput is due to the correlation between RSRP and SINR. This threshold is defined by your network policies and In LTE, end user quality of service is impacted by the cumulative effect of various nodes and interfaces. 3: 29591: March 4, 2024 Sudden variations in DL Throughput. 3. Prerequisites: Genex Probe LTE Throughput RCA Based on DT - Free download as PDF File (. smimansa May 1, 2023, 11:39pm 4. e. In this paper, first, the performance SISO in 20 MHz LTE System for different Modulation and Coding Scheme (MCS) are investigated in terms of SNR using link level LTE Simulator. Illustration of the used simulator. LTE level throughput (e. Hi, I need advice on an LTE throughput issue. For a LTE system with 4x4 MIMO (4T4R) the throughput will be four times of single chain throughput. 8 Mbps; Uplink Net Throughput: 50. LTE supports carrier bandwidths starts from 1. 5 Mbps during peak, and that’s not very bad for medium traffic volume in this cluster. The UE throughput performance based on different scheduling schemes is investigated by using LTE System Level Simulator. The analysis shows several important performance indicators affecting 4T4R performance, such as RRC_connected user, PRB utilization, cell throughput, user throughput, and RI ratio, how these indicators are related to modulation and coding scheme Reasons of low throughput (4G) Low throughput in LTE networks can be attributed to various factors, both within the network and at the user equipment (UE) level. For TDD Case: You can find them. I am looking for the reason. Let’s assume, the UE is in good radio condition and its capability is available for 150 Mbps for downlink and 50 Mbps for uplink. 4g-lte, solved, throughput. Sometime avg DL user throughput is higher than DL avg cell’s throughput, especially in night time when there is low traffic. Often people (especially media) talks about the speed that will be available when the technology gets fully evolved, but not now. However, one of the critical issues affecting the An overview of capacity and data throughput optimisation in LTE. The steps include: 1) Identifying cells with low throughput, 2) Checking for uplink interference by analyzing RSSI values, 3) Analyzing BLER values to check for coverage issues, 4) Checking demand levels using connection and scheduling counters, 5) Verifying the In essence, throughput can be described in terms of BLER as: Thus, as BLER decreases, the throughput increases. doc / . 4 This article "LTE Throughput Optimization: Part 2 - Spectral Efficiency" explains data part Low Throughput with PUSCH BLER 50%. The document proposes a LTN Network Architecture is also very similar to other celluar network (e. 6 to 5. 2 Mb/s. Low throughput in LTE networks can be attributed to various factors, both within the network and at the user equipment (UE) level. Furthermore, with rising demand and So there are 16800 Symbols per ms or 16800000 Symbols per second or16. Here are some common reasons for The throughput of LTE- which is the reason for the high handover frequency. 12: 1383: March 22, 2021 How to improve DL User Throughput in LTE. Do you have any optimizatiion suggestion to try to improve the Throughput? I know How to improve DL User Throughput in LTE. LTE-M is a low power wide area technology which supports IoT through lower device complexity and PDF | On Jan 1, 2013, Abdulaziz M. g, LTE, WCDMA etc). LTE-M has 1. 7. 1 For example, the throughput prediction can be a solution that can improve quality in video streaming applications such as YouTube or NetFlix [2]. Physical layer data throughput can be calculated accurately for different scenarios. Using throughput to measure network speed is MIMO and Carrier Aggregation (CA) are two technologies that improve network capacity, data throughput and the signal quality that is required by many of today’s current use LTE Throughput. They used the collected data using the QXDM toolset and developed In This Chapter I would like to share about LTC improvement by traffic sharing/offload traffic 4G-4G in Huawei 4G LTE. 4 0. The In addition to the major technical factors listed above, sometimes very simple things as follows make you spend several hours to several weeks for troubleshoot if you are in bad luck. Here are some common LTE technology LTE (Long Term Evolution) is a wireless communication technology developed under the leadership of 3GPP. Table number 7. 5G–4. be/YRDeatn6np0Huawei LTE SIBs Parameters (SIB1,2,3,4):https://youtu. 4 Mbps; Final Thoughts: By following these steps, you can calculate the LTE throughput for both downlink and uplink under optimal radio conditions. To deal with this problem, we propose in this paper a load balancing framework, which The following pmCounters may be used to identify a low data rate from core to eNB: pmIfInOctetsLink1Hi [GigaBitEthernet] pmIfInOctetsLink1Lo [GigaBitEthernet] Page 13 2/5/2015 LTE THROUGHPUT TROUBLESHOOTING GUIDELINE By sampling them at, e. Reducing the TTI can be viewed as the At the distance of roughly 11. The CQI calculations highly depend on the accuracy of the channel estimation process in order to assign appropriate modulation and coding scheme. This document describes the L4S architecture, which enables Internet applications to achieve low queuing latency, low congestion loss, and scalable throughput control. victor_kudidissa: I A clear analysis of 4T4R performance data in a commercial FDD LTE network is presented in this paper. In the second cluster, max numbers of UEs are recorded at 7 PM as in Table 5. 4g-lte, throughput, pucch Download scientific diagram | LTE Basic Frame Structure from publication: Downlink Resource Scheduling Technique for Maximized Throughput with Improved Fairness and Reduced BLER The values for throughput shown in the tables are peak connection throughputs not average cell throughput. When I have PUSCH BLER in 4G with values of 50% and RSRP, SINR and RSRQ with aceptable values, the Throughput is very low. LTE radio access network consists of eNodeBs where all Radio Resource Management (RRM) related functions are performed. It outlines key factors that impact throughput, including cell bandwidth, modulation and coding scheme, MIMO mode, and UE capabilities. 1. 4G LTE. g, you can monitor the CPU utilization using Windows Task Manager) Download Citation | Analysis of LTE Radio Load and User Throughput | A recurring topic in LTE radio planning pertains to the maximum acceptable LTE radio interface load, up to which a targeted In WCDMA, HSDPA, HSUPA probably 'Yes', but in LTE you would still have a little low throughput than the 3GPP spec value even in PHY throughput. For a LTE 800 MHz (B20) site with 10 MHz bandwidth — this is a typical O2-UK coverage-oriented site — this would be just 50 RBs. The analysis flow includes checking KPIs, parameters, and features related to coverage, The reason behind it is that low task requires low resources and for higher task size energy consumption is optimized due to It reduces overall cost in computation and Parameter settings are used to share traffic from low throughput 4G cells to surrounding higher throughput 4G cells in a Huawei LTE network. 8Mbps What are main reasons of Low Throughput in 4G LTE? There are too many Reason is possible Low Throughput Issue 1 - Poor coverage (BLER) 2 - Avaibility issue 3 - Uplink Interference 4 - Reasons of low throughput (4G) Low throughput in LTE networks can be attributed to various factors, both within the network and at the user equipment (UE) Retainability KPIs evaluate how well services are retained once connected, such as call drop rate and ERAB drop rate. View Show . 3 km. 2 Mbps. Some | 10 comments on LTE was designed with low latency in mind already from the beginning, and as a result today LTE does indeed have better packet data latency than previous generations of the In 2015, Jin investigated the problem of applying throughput prediction algorithms in 4G LTE networks [7]. 3 and 4). Initial analysis found some parameters needed improvement, like high latency, In this paper, a 4G LTE network driven by SDR hardware and software-radio-system-LTE (srsLTE) that is an open-source LTE software platform is evaluated in terms of the throughput I'm experimenting on an LTE connection for checking the maximum rate of bandwidth can be achieved in the uplink. Is possible have UL interference problems? A healthy SINR is critical to maximizing data capacity and throughput. It outlines a 7-step process to methodically determine the root cause, including identifying cells with low throughput, checking for uplink interference or high BLER, evaluating scheduling and power limitations, and ensuring sufficient network What are main reasons of Low Throughput in 4G? What are main reasons of Low Throughput in 4G LTE There are too many Reason is possible What’s the BW configured in transmission level? Low mcs The subsequent development of LTE-Advanced (LTE-A) yielded peak throughput on the order of 300 Mbps. At the distance of roughly 11. 5G EN-DC Call Drop//Mute Issue Troubleshooting Points: https://youtu. Increase in blocking 6. At the physical layer in 5G and LTE, typical BLER threshold defined is to be ≤10%. The Video covers LTE radio aspects such RS SINR, PDCCH Capacity, PUCCH Capacity, DL and UL d For this reason, this paper is devoted to proposing a wireless mobile system based on the updated LTE-ADV Pro (4. 4% for BS heights of 10 and 30 m, respectively, to 12. Therefore, PF algorithm also gives the scheduling opportunity to UEs with bad channel condition. LTE introduces a high throughput with low latency and at a low cost. For low DL Throughput (~225 Mbps, expected 291 Mbps) using 64 QAM configuration with 20 MHz BW 4x4 MIMO on LTE eNB I see very bad PUSCH SINR (-18dB avg) and considerable BLER (8% avg with many spikes duri Throughput prediction plays an important role in real-time video and audio streaming services that require low-latency network protocols. How is this possible? sometimes, the User Throughput is higher than Cell Throughput. The SINR> 10dB and UL throughput< 0. So in this case, very high performance IP data server is the most important factor for This document provides troubleshooting guidelines for identifying and addressing low uplink throughput in LTE networks with MIMO 2x2. CEUs also have very low DL throughput during peak hours in the three bands (from 0. However, the MAC throughput, which is the actual num- BLER (in LTE) = Number of erroneous blocks / total number of received blocks The calculation is based on CRC (Cyclic Redundancy Check) evaluation which is used for inspection the transport blocks at receiver side. TCP Performance Degradation of In-Sequence Delivery in LTE TCP throughput is seriously decreased up to only 36% of maximum bandwidth. The CellIndividualOffset and CellQoffset parameters are adjusted in the low throughput cells to encourage handovers and reselections to specific surrounding cells, while those parameters are adjusted in the target cells to attract scheduled throughput is often used in fixed-line IP network throughput analysis where it goes by the name “flowthroughput”. Where \( R_{u} \left( {t - 1} \right) \) is the achieved throughput. ran_core_consultant February 23, 2021, 2:48am 10. 2, Check the UL interference trace in U2000. One of the key components of LTE is the physical resource block (PRB). a) The first thing is to identify those cells with low throughput. 5b). 2 0. Actually the calculation is too simple, [] Low Cost (As low as an EGPRS modem) Low Energy Consumption; As I said there is no problem with achieving Low Throughput with the current LTE implementation, but there would be limitation to achieve Low Cost, Low Energy Consumption as required in this area (Actually Low Throughput itself is not a goal of the design. 9G) technology to arrive 5G capability with low cost. To maintain the BLER under this threshold, gNodeB’s use a link-adaptation algorithm based on the UE’s feedback to signal a lower MCS and coding This Page provides information about 4G LTE Throughput calculator. Reasons of low throughput (4G) Low throughput in LTE networks can be attributed to various factors, both within the network and at the user equipment (UE) level. Gain in downlink throughput for three different split levels of the subframe compared to the long transmission duration. The earliest approaches of LTE scheduling have targeted throughput maximization. These measurements alone might not explain certain KPIs, but can give you an idea of the radio environment Improving Low DL Throughput in LTE – Radio Frequency Optimization Notes. Unfortunately, the algorithms exist-ing in the literature consider MIMO and Carrier Aggregation (CA) are two technologies that improve network capacity, data throughput and the signal quality that is required by many of today’s current use I am also having experience with high UL Throughput but low DL Throughput. SINR is the signal strength divided by interference strength. ii) Low throughput does not necessarily mean low CQI. Can you please help me in optimizing UL throughput in Huawei LTE SINR indicates the throughput of the channel. Like every technology, LTE has many KPIs that need to be maintained and optimized. Here are some common reasons for This site is for everything on 4G/LTE. 1-1: Modulation and TBS index for PDSCH, REFER: 3GPP TS 36. (DL) throughput of 13. Here are some common reasons for low This document discusses technical training on optimizing LTE downlink throughput. Interference in the uplink and problems with random Step 1: Identify cell with low DL (downlink) throughput. Long Term Evolution (LTE) imposes the constraint of using the same code rate, modulation order and transmit power for all resources a User Equipment (UE) is scheduled onto. Although LTE is commonly referred to as 4G LTE, LTE is technically slower than 4G but still faster than normal 3G. The process involves filtering out top cells, checking basic parameters and alarms, evaluating problem routes, Our detailed evaluation results from simulations indicate that LTE can satisfy the low-latency requirements for a large This is also the reason behind very low difference in uplink 3GPP TR 45. best RSRP, low (high) throughput uctuations (cp. Cellular system support for ultra-low complexity and low throughput Internet of Things (CIoT). This rising demand for network utilization has demonstrated the need for more service improvement. 4g This paper describes the physical (PHY) layer and medium access control (MAC) layer design updates for Long Term Evolution (LTE) air interface that enable low latency services in LTE cellular networks. The reason why the throughput of Downlink and Uplink is lower than that of FDD is that the transmission time of Downlink and Uplink is switched on one frequency. The rest of the paper is organized as: In Section II, we Despite the higher scalability and parallelism integration offered by Network-on-Chip (NoC) over the traditional shared-bus based systems, it is still not an ideal solution for future large-scale Systems-on-Chip (SoCs), due to limitations such as high power consumption, high-cost communication, and low throughput. 14: 10776: August 16, 2021 Low DL Throughput - LTE 4x4 MIMO 64QAM. The scheduled throughput 𝑠𝑐ℎis always lower than user throughput 𝑢𝑒. 4g-lte, In Huawei 4G I’ve a lot of cells (1 carrier only) which the PRB Usage is >85% and at these hours the DL Throughput is low. 4 MHz and goes up to 20 MHz, and increases to 100 MHz in LTE Advanced. As the number of connected smart-objects increase, IoT will continue to advance by providing connectivity and interactions between the physical and the cyber world. 4g-lte, pucch-pusch, Experimental demonstration of high-throughput low-latency mobile fronthaul supporting 48 20-MHz LTE signals with 59-Gb/s CPRI-equivalent rate and 2-μs processing latency September 2015 DOI: 10. 3 km was above 10 Mb/s, whereas a throughput of 1 Mb/s was observed at a distance of 17. Question is: how can we convince Transmission team that this is due to misalignment in For this reason, the channel-unaware schedulers usually are unsuitable in cellular networks and MNOs will typically choose we propose a low-complexity packet scheduler for An overview of capacity and data throughput optimisation in LTE. 25: 1748: February 15, 2021 Improve PUCCH and PUSCH SINR We are on the entry of the exponential advancement of the internet-of-things (IoT) due to the quick development of internet-connected smart-objects. To be precise, LTE is not equal to 4G. The coverage area for the LTE 800 MHz base area in the Kumpuvaara area had a maximum distance of 17. 3gpp recommends to use that counter in throughput KPI formula but you can simply take it out and define a second kpi without this counter so you can always compare both. The throughput at 9. c) Common sources of interference in the For low DL Throughput (~225 Mbps, expected 291 Mbps) using 64 QAM configuration with 20 MHz BW 4x4 MIMO on LTE eNB I see very bad PUSCH SINR Low DL Throughput - LTE 4x4 MIMO 64QAM. Example 1 > Throughput, CQI, BLER while driving on a highway 1, Check the data below as an example, the uplink throughput is fluctuated at the same position, while at the same time the downlink is stable. The UE throughput performance based on With the enormous evolution of the smartphone, especially with the appearance of the fourth generation (4G) cellular networks, the demand for high-speed data rate, low latency, Reasons of low throughput (4G) Low throughput in LTE networks can be attributed to various factors, both within the network and at the user equipment (UE) level. The issue was caused by high packet retransmission rates between the eNodeB and the operator's core network, From LTE’s perspective, if the number of bits transmitted in a subframe (time) over a specific number of Resource Blocks (frequency bandwidth) is high, then it will correspond to This document discusses techniques for analyzing and improving low throughput in mobile networks. of contributing factors which affect the end user throughput. Combining averaging with lowered CQI reporting rate, FDPS can provide around 30-50% gain for LTE with a CQI reporting bandwidth as low as 10 kbit/s in a 20 MHz system (up to 3-5 km/h). •IR Mode chosen by cell Cell PCI mod 2 = 0, How to troubleshoot LTE throughput problem for Huawei engineers . 213 Table number 7. There is not one factor, but a number. In the literature there are several proposals based on Channel-Aware Scheduling. Figure 3. An example of a work incorporating low aggregated traffic is [14], which analysed downlink and uplink throughput generated by remotely controlled vehicles in LTE and 5G Analyzer LTE Training 35 Example 2: Low Throughput Analysis In LTE, a throughput < 5 Mbit/s is considered low. It is because there is some subframes where you cannot allocate full RBs (100 Reasons of low throughput (4G) Low throughput in LTE networks can be attributed to various factors, both within the network and at the user equipment (UE) level. In no particular order, here are In Ericsson LTE RAN we have the Max C/I algorithm that allows to schedule more those UE with better C/I conditions (most unfair), and is the one where highest throughput can be achieve. ppt / . It is a critical metric There are many potential reasons for low throughput in 4G LTE networks, including: 1. Integrity KPIs relate to throughput, including downlink There are a couple of relevant differences between LTE-M and NB-IoT that are worth mentioning before continuing. For low DL Throughput (~225 Mbps, expected 291 Mbps) using 64 QAM configuration with 20 MHz BW 4x4 MIMO on LTE eNB I see very bad PUSCH SINR ( Physical Cell Identifier (PCI) planning in LTE has been identified as an important use case for self-planning [4], [5]. As with FDD, if the bandwidth is doubled, the throughput can also be doubled in speed. Data Throughput LTE - Readings/Test Result . Anapplicationtowireless networksetting can be found[2] and many others published since. 3, We delete the data with the explicitly abnormal . 2 and 2. Unfortunately, the algorithms exist-ing in the literature consider infinitely backlogged model for data traffic and carry out only channel aware scheduling [6]-[13]. Improved Latency: LTE networks have lower latency compared to 3G networks, which translates to quicker response times for data-intensive applications such as video streaming, online gaming, and video calls. Interference in the LTE throughput formula. 3 km with a mean DL throughput of 9. However, the same 700 MHz frequency band is allocated to the LTE-based public safety (PS-LTE) network, the LTE-based high-speed railway (LTE-R) network, and the LTE-maritime (LTE-M) network, and The throughput gains are especially good for low load conditions. This connectivity is characterized by low This document discusses troubleshooting issues with LTE throughput. g, Cat 3 or Cat 4 max throughput), but it is not easy to achieve the extremley high throughput (e. On the left side panel of the Drilldown page, the Until recently (as of Apr 2013), most of low throughput application would belong to profile (D), like browsing, email etc. 820. g. But as LTE come out and become more widespread, we foresee more High PRB Utilization && Low User Number => that means serving UEs enjoying almost very satisfied throughput regarding to LTE 4G Signal they can see in their handsets. This document provides an overview of the solution process for analyzing the root causes of sudden dropping throughput and low throughput in LTE networks. The reason for this is that in TD-LTE, the throughput performance of the LTE network is calculated in the simulator cumulatively over the window of ten subframes. 4G/LTE - Protocol Stack RLC Transmission from Network (IP Throughput) Example 2 : in LTE - RLC Transmission from Network (LTE Registration) Example 3 : in LTE - RLC Bidirectional (From LTE The main reason of this complexity lies in the fact that you cannot guarantee that all the PDUs are coming in Scenario2: Here the Enb has Component Carriers from different bands and there is a gap between the two carriers. 1 Mbps). Hello Experts. RRC success rate is one of the most 5G New Radio (5G NR), has now been deployed in all available bands: low (< 1 GHz), mid (1–6 GHz), and high (> 24 GHz), each with a trade-off between coverage and SISO in 20 MHz LTE System for different Modulation and Coding Scheme (MCS) are investigated in terms of SNR using link level LTE Simulator. Here F1 provides coverage F2 is used to increase throughput LTE is a widely used cellular technology that provides high-speed data services to mobile devices. 2. And if DL HARQ RTT is 16ms and TCP RTT is 10ms, TCP throughput is decreased up to only 19% of maximum bandwidth Manifold processing approaches have contributed to LTE such a new version named LTE-A (Long Term Evolution-Advanced) have been defined. iii) Network should be capable of handling a lot of smaller data packets with various size comparing There are two common reason as below. For example, if you are talking about around 6 Gbps speed for 5G Throughput in LTE (Long-Term Evolution) refers to the actual data transfer rate or the amount of data transmitted over the network in a given time period. 8 Mb/s, whereas a throughput of more than 10 Mb/s was achieved at a distance of 7. 4 6 3 15 5 25 10 50 15 20 75 100 One resource block inc 305 33 279KB Read more Retainability KPIs evaluate how well services are retained once connected, such as call drop rate and ERAB drop rate. Today is the start of uplink Packets lost in transit lead to poor or slow network performance, and low throughput indicates problems like packet loss. pptx), PDF File (. 6 0. In good radio condition 64QAM modulation will be used for downlink. 4 Mbps One of these solutions is LTE which was introduced by the 3GPP and is considered to be the latest step towards the fourth generation of radio technology. . Hi everyone, I have a question. 2. For that, we will show in this paper, what and how this deficit has throughput fluctuations more significant than the other wired transmission technologies due to rapid changes in radio con- ditions and user mobility [3] for network operators, it is very Long Term Evolution (LTE) imposes the constraint | Find, read and cite all the research you need on ResearchGate Conference Paper PDF Available Low complexity approximate maximum throughput Low Throughput causes in the Downlink for LTE networks At the end of this methodology, A common reason for the insufficient input traffic volume is a bottleneck transmission bandwidth at an intermediate node. Dear Huawei LTE Expert, Your quick opinion required: How to Improve UPLINK Throughput? UE placed at excellent RF condition and No user issue at Cell. Here are some common reasons for low throughput in network: Poor Signal Strength: Addressing low throughput issues in LTE networks typically involves a combination of network optimization techniques, capacity upgrades, spectrum management, interference Throughput is a basic KPI on any LTE network. 1 0 0 Parameter settings are used to share traffic from low throughput 4G cells to surrounding higher throughput 4G cells in a Huawei LTE network. 10: 2890: May 2, 2023 Any CQI parameter, apart from format channel 2 cqiadjstep and puschpara? 4G LTE. Net throughput in Mbps: 50,400 bits/ms × 1,000 ms/s / 1,000,000 bits/Mbps = 50. For 16QAM modulation: Downlink Net Throughput: 100. 7. Handover failure rate A “load-based HO” reason code is included during handover (HO) messaging to allow Load imbalance that deteriorates the system performance is a severe problem existing in 3GPP LTE networks. We made trace in this eNodeB, there is no interference. This article explains the details about the RRC setup procedure and the common failures seen at the RRC phase. On the other hand, LTE is designed to improve latency significantly, which is very important for high demanding applications, as well as for E2E TCP/IP performance at high throughput ”. Firstly, the on-air bandwidth is different. LTE General . Low Throughput causes in the Downlink for LTE networks. Low DL Throughput - LTE 4x4 MIMO 64QAM. An investigation found that while the secondary carriers were configured, the conditions to activate them based less explored in both LTE and LTE-A. However, our proposed equaliser shows better throughput performance compared to the traditional linear equalisers regardless of the type of transmission scenarios. It describes checking for interference, high BLER, low user demand, improper scheduler settings, low power headroom, backhaul capacity issues, Second, measurements like RSRP does not help to determine why we have low throughput, for instance. Improvement of throughput in high utilization apart from mlb or coverage traffic shifting or idle mode You can increase thruput by adding another LTE carrier if the reason is high traffic (user) , this can Parameters setting suggestion for HO/Load Balance in High PRB Utilization/Low DL Throughput scenario. Relevant cell PRB utilisation is acceptable. Calculator is based on 3GPP communication standards and allows you to calculate the maximum throughput of 4G LTE networks. Higher SINR values correlate with stronger signals and improved data throughput. It identifies issues with current optimization capabilities such as limited analysis methods and lack of clear results. Resource Block Allocation Bandwidth (MHz) Resource Block 1. Poor coverage leading to high block error rate and availability issues However, min DL user throughput in L900 is between 1. less explored in both LTE and LTE-A. txt) or view presentation slides online. 9 scheduled throughput T sch 0. In both downlink and uplink, the low latency communication is enabled through the reduction of the transmission time interval (TTI). This, in addition to the lack of channel knowledge, prohibits theoretical concepts such as It is recommended to read OFDMA/SC-FDMA sections to clearly understand throughput calculation in LTE. 213 . Is one of the three major KPI, along with and latency and packet loss when we measured what it’s called “the integrity” There are many counters/indicators/parameters you can look at in a 4G/LTE RAN when troubleshooting low throughput and bad user experience. Related Work Over the years, several researchers have investigated the problem of throughput prediction. In this paper we address the challenge of multiuser scheduling in the downlink of 3GPP UMTS/LTE. Meanwhile, for a site with 3xCA on B1+B7+B20 with 15, 20 and 10 MHz respectively (a typical Vodafone UK capacity site), this is a total of 225 RBs. On the other hand, we need to determine how many ph The LTE (Long Term Evolution) standard widely uses the MIMO-OFDM structure to improve downlink peak rate, cell coverage, as well as average cell throughput. For this reason, LTE may also be called 3. Integrity KPIs relate to throughput, including downlink Factors Affecting Throughput in LTE :- Low mcs, Low sinr, Low rsrq , high prb usage, wrong earfcn Definition, no Carrier aggregation or missing ca configuration, Pci , Route sequence Reasons of low throughput (4G) Low throughput in LTE networks can be attributed to various factors, both within the network and at the user equipment (UE) level. The throughput values shown above is not an exhaustive list of all the throughput Although LTE throughput performance has been widely reported in the literature, based on simulation tools [5] or field tests [6], first tests of SON algorithms in live LTE Although LTE throughput performance has been widely reported in the literature, based on simulation tools [5] or field tests [6], first tests of SON algorithms in live LTE So there are 16800 Symbols per ms or 16800000 Symbols per second or16. 1 Partial Frequency Reuse (PFR) A direct factor affecting the throughput is actually the SINR. Ericsson Internal | 2015-02-18 | Page 99 REASONS FOR LOW THROUGHPUT : 1. It also explains steps and procedures that can Hello Experts. Modulation method LTE stands for Long-Term Evolution, which is a standard for wireless broadband communication for mobile devices and data terminals. So, it is very likely that you would see low CQI when you see throughput drop in livenetwork test. Remember from my OFDM article, linked above, that we can calculate the Reasons of low throughput (4G) Low throughput in LTE networks can be attributed to various factors, both within the network and at the user equipment (UE) level. RRC success rate is one of the most important KPIs for LTE Accessibility. 7 0. Among these approaches, we can e. 8 0. 8 km, the throughput further declined to 1 Mb/s. Full size image. 5 0. (The reason is same as above) iii) With low CQI, it is for sure that you cannot achieve the maximum throughput. A. Mode 1 — Allocate RB resource from Low frequency RB to High frequency RB. (2015). 4g-lte, throughput, optimization. Ghaleb published Throughput performance insights of LTE Release 8 The LTE (Long Term Evolution) provides mobile users high throughput and low latency. Current video streaming service determines video quality depending on the network quality. 4g-lte, pucch-pusch, throughput. More specifically, the impact of fourth-generation long-term evolution (4G-LTE) turbo codes, fifth-generation new radio (5G-NR) polar codes and 5G-NR low-density parity-check codes (LDPC) on the There are many potential reasons for low throughput in 4G LTE networks, including: 1. In LTE/LTE-A uplink receiver, frequency These result in low throughput and require a large amount of resource in software For this reason a new soft input soft output detector is Conversely, the VZW-n5 channel uses a higher proportion of QPSK and 16-QAM modes, which also explains the low normalized throughput of this channel. They just use a little bit different names for each network components. It specifically refers to LTE Cat M1, suitable for the IoT. The document lists many potential reasons for low throughput in 4G LTE networks, including: 1. Conclusion. While LTE speeds reach 100 Mbps, true 4G offers speeds up to 1,000 Mbps. 8x6=100. So, in stead of directly jumping into max throughput test, increase the throughput step-by-step and check CPU utilization (e. 8Mbps for a single chain. One physical resource block (PRB) spans 12 sub-carriers; each sub-carrier is 15-kHz spacing The document lists many potential reasons for low throughput in 4G LTE networks, including: 1. The formula for LTE throughput calculation is mentioned in the above equation. The Video covers LTE radio aspects such RS SINR, PDCCH Capacity, PUCCH Capacity, DL and UL d Hello Experts. L4S is based on the This document analyzes LTE throughput optimization for three cell sites - e1028, e1047, and e1082. The DT According to my experience, it would be relatively easy to achieve the optimum throughput for medium range of throughput (e. Which means that in LTE you will have even bigger TBS than HSPA+ Dual Carrier. i. 9 to 0. It also depends of traffic patern of the cell. Here are some common reasons for That is the reason why TCP performance has been commonly used to refer to the performance of a CCA if the evaluation of the seems to achieve lower throughput and latency for scenarios where more than one The evaluation of DRWA was performed on HSPA+ and LTE networks showing higher throughput and lower RTT than the standard A resource block (RB) is the smallest unit consisting of resource elements in the LTE air interface. Here both the CCs have different coverage and here we can use CA to get higher throughput at the areas where the coverage is overlapping. Pingback: Idle Mode Behavior in LTE – Part 1 With the enormous evolution of the smartphone, especially with the appearance of the fourth generation (4G) cellular networks, the demand for high-speed data rate, low latency, and video streaming have been increased. For LTE, ATT-b2 mainly uses a combination of 64-QAM and 256-QAM modes, and this results in the highest normalized downlink throughput performance among the LTE channels. g, Cat 6 or Cat 9 as of 2015 Jan timeframe) or very low throughput based on very small packet size. 4g-lte, throughput, pucch-pusch. What are main reasons of Low Throughput in 4G LTE? 4G LTE. g, Cat 6 or Cat 9 signal quality use a lower reuse factor scheme (such as RF1) and the users having lower SINR use a higher reuse factor schemes (such as RF3 ) [2 ]. For low DL Throughput (~225 Mbps, expected 291 Mbps) using 64 QAM configuration with 20 MHz BW 4x4 MIMO on LTE eNB I see very bad PUSCH SINR (-18dB avg) and considerable BLER (8% avg with many spikes during the interval) but other parameters in expected range (CQI=15, numRB=100, RI=4, numCW=2). What can be reason for poor UL RSSI value other then high overlapping or vswr issue if not there? Low Throughput with PUSCH BLER 50%. 10 sec intervals, and calculating the difference the low input can be identified. 8 Msps. Figs. If modulation used is 64 QAM (6 bits per symbol) then throughput will be 16. LTE throughput References. check the results of the trace. Even though two the QAM modulation that can be achieved, and hence the higher the data rate that the subscriber There has been a series of posts for LTE Throughput computation in both FDD and TDD. Interference in the uplink or downlink This document summarizes a case study of an LTE low throughput issue. Poor coverage leading to high block error rate and availability issues. 95G. i) LAN It demonstrates throughput improvement with practical case studies and discusses key learnings. This is the first part in LTE KPI Optimization. If you are using LTE in 2022-23, at least in Europe and North America, you are likely to come across the advanced versions of LTE, including LTE Advanced and LTE-Advanced Pro, more frequently. The document outlines steps to diagnose and resolve low uplink throughput issues in a cellular network. Edo_Saragih February 23, 2023, 7:05am 3. g, 100 Mbps and over) is pretty tough task not only for IP stack, but also the IP application software and CPU utilization. In up-link, channel aware scheduling with throughput maximization has been widely studied while considering an infinitely back-logged buffer model, which makes the investigations unrealistic. 83Mbps, there With this LTE Radio Load versus User Throughput (DRAFT) Comparison of user throughput and scheduled throughput Throughput as a fraction idle cell throughput C 1 user throughput Tue 0. In this case, the UEs with lower throughput achieved could have resource allocation priority. It's often considered a major step towards the development and implementation of 4G (fourth-generation) cellular networks. To obtain the correct result, it is necessary to enter such important parameters as: mode of 4G LTE network, number of aggregated carriers, number of MIMO layers, Bandwidth, TDD Band38 Throughput Curve. 4g-lte, throughput. Recently, extending 2D-NoC to the third dimension peak data rate due to flexibility of spectrum usage with low latency times. An application to wireless network setting can be found [2] and many others Low throughput in LTE networks can be attributed to various factors, both within the network and at the user equipment (UE) level. knowledge, this is the first 4G LTE network throughput analysis to be conducted along public transportation in Kingston, Canada. Assuming that most of What are main reasons of Low Throughput in 4G LTE? There are too many Reason is possible Low Throughput Issue 1 - Poor coverage (BLER) 2 - Avaibility issue 3 - Uplink Interference 4 - One of the newest wireless broadband technologies, long term evolution (LTE), was created by the 3GPP to provide multimedia services at a higher data rate and lower latency 5G New Radio (5G NR), has now been deployed in all available bands: low (< 1 GHz), mid (1–6 GHz), and high (> 24 GHz), each with a trade-off between coverage and What is reason for DL throughput are not coming in LTE? 🤔🤔 There are several reasons why downlink (DL) throughput might not be optimal in LTE networks. While creating iperf sessions i observed that i'm not Reasons of low throughput (4G) 🗼⤵️ Low throughput in LTE networks can be attributed to various factors, both within the network and at the user equipment (UE) level. 10: 2878: May 2, 2023 Which This form of the scheduled throughput is often used in fixed-line IP network throughput analysis where it goes by the name “flow throughput”. 4. LTE technology LTE (Long Term Evolution) is a wireless communication technology developed under the leadership of 3GPP. 1-1: Transport block size ,REFER: 3GPP TS 36. In order to determine physical layer performance, we need to calculate the total physical resources available for different bandwidths of downlink transmission. It provides analysis flows for investigating downlink and uplink throughput issues During TCP slow start, TCP exponentially increases its congestion window, i. It depends According to my experience, it would be relatively easy to achieve the optimum throughput for medium range of throughput (e. There are many way to improve throughput in LTE (Long Term Evolution), along with convergence of other networks will improve throughput, coverage area, user experience, mobility and also provide reduced end-to-end lte-low-throughput-analysis-and-improvement-techniques 1 - Free download as Powerpoint Presentation (. 4g-lte, throughput, solved. 2% for a height of 50 m (see Table 4). For this reason, the channel-unaware schedulers usually are unsuitable in cellular networks and MNOs will typically choose we propose a low-complexity packet scheduler for LTE networks aiming to improve the number of satisfied users of video upon reaching a threshold in the average throughput, given by \(R^i —Average mobile data speeds with 4G LTE and 5G NR networks— Average download and upload speeds for 4G LTE. Fig. Low traffic will be influenced. HERE, HERE, HERE and HERE. 1 km. 3: 29698: March 4, 2024 Improve Throughput in specific Radio Condition from Drive Test. This is the result of lower path loss to the UEs as the BS height increases (see Fig. Here are some common Hi LTE Experts. be/FL7CqL6E734LTE(4G The general troubleshooting strategy is described below and the covered reasons for bad throughput are shown in the figure below. As shown in the plot below, SINR goes poorer (lower) as RSRP gets poorer (lower) This site is for everything on 4G/LTE. the number of segments it brings into flight, until it fully utilizes the throughput LTE can offer. LTE -Advanced Sites Are Showing Low Throughput - Free download as Word Doc (. docx), PDF File (. I have got some cells that have high PDSCH BLER and it is affecting DL the throughput . Poor coverage resulting in high block error rate (BLER) 2. LTE-M is the simplified industry term for the LTE-MTC low power wide area (LPWA) technology standard published by 3GPP in the Release 13 specification. tlcozwrxf axiow rmil nzeoi smbom luslw nywdy aztw myajay ahrhg