Lte low dl throughput

Lte low dl throughput. Original code from Github. Is one of Jan 11, 2024 · Although similar to DL throughput, UL throughput has special considerations to take when analyzing performance issues on a network. In reality throughput will be a bit lower due to increased number of pilot signals. The 5G throughput in the downlink refers to 5G-NB to UE data rate while in the uplink it refers to UE to 5G-NB data rate. Is one of the three major KPI, along with and latency and packet loss when we measured what it’s called “the integrity” network. 101 (Rel 18 Jun 2024) Display All FDD TDD SDL DL Increasing DL Decreasing UL Increasing UL Decreasing 1. LTE throughput depends on the following parameters: Bandwidth; Channel quality pmBadCovEvalReport indicates poor DL coverage. Jan 11, 2024 · Although similar to DL throughput, UL throughput has special considerations to take when analyzing performance issues on a network. Costa Rica, Venezuela, Brazil and some Caribbean countries or territories. • The unit of throughput is bits per second or bps. Jun 18, 2024 · Bandwidth check LTE frequency band 36. LTE General . Use this page calculate things such as eNB ID/RNC-ID/BSIC or hex values of IDs. So, in stead of directly jumping into max throughput test, increase the throughput step-by-step and check CPU utilization (e. The throughput at the last step in the process can be defined as physical layer throughput. 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. #LTEOPTIMIZATION #LTE # LTESOFFPARAMETERSPoor CQI Reason in 4G & Optimization?https: Sep 15, 2022 · The first issue is simple. Jul 12, 2022 · Long-Term Evolution (LTE) cellular networks have transformed the mobile business, as users increasingly require various network services such as video streaming, online gaming, and video conferencing. Dec 29, 2022 · Throughput is a basic KPI on any LTE network. Example 1 > Throughput, CQI, BLER while driving on a highway Apr 7, 2013 · DL and UL throughput calculation for LTE LTE system uses OFDMA as access technology in downlink to TDD increase the spectral efficiency and SC-FDMA in uplink due to low 9. With no mmWave reception, T-Mobile NR DL throughput is superior to Verizon’s, even though the Verizon BS is very close to the building. There are many way to improve throughput in 4G Huawei such as:Bandwidth Upgrade,Sharing traffic 4G-3G,sharing traffic 4G-4G(High traffic 4G cells to surroundings low traffic), Parameter adjustment such as:activate EPFENHANCEDSWITCH,Clearing overshooting,Upgrade transmission 🔘 LTE Radio Frame duration = 10ms 🔘 Sub-frame duration = 1ms 🔘 Time Slot duration = 0. Improving Low DL Throughput in LTE. 7. Conclusion Peak to Average Power ratio (PAPR) advantage. However, min DL user throughput in L900 is between 1. 5ms 🔘 Symbol duration = 0. May 31, 2019 · Low DL throughput is the major issues in any LTE network, there are few steps that can be taken whenever we troubleshoot low DL throughput in the network. 9 to 0. 5 Mbps during peak, and that’s not very bad for medium traffic volume in this cluster. Space between the chhanel and the next channel is always same regardless of the system bandwidth of the LTE band. Another notice is calculated throughput includes LTE headers (i. Let’s take the example for LTE using FDD, where channel bandwidth can be 5 MHz, 10 MHz and 20 MHz. The corresponding MCS cell range, SINR, DL throughput, and RSRP were observed at different MCS levels. So, with Drive Test data, if there is low throughput and the RSRP is also low then that would typically indicate a bad coverage scenario. Note: In 4G LTE, there is a one-to-one mapping between base station channel bandwidth and UE channel bandwidth. . This work models and predicts the DL-Throughput by utilizing LTE data measurements to train supervised ML models. In order to determine physical layer performance, we need to calculate the total physical resources available for different bandwidths of downlink transmission. Jan 2, 2024 · 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. This parameter is taken with some inaccuracy, i. Networks on LTE bands 1, 3 (LTE-FDD) are suitable for roaming in ITU Regions 1, 3 and partially Region 2 (e. 9–4. The data rate at this step is determined only by number of REs allocated for the data and the modulation method (QPSK, QAM, 16 QAM etc). 1 Mbps, as in Table 4. LTE throughput calculator EXAMPLE: Input : MCS = 10, PRBs = 20, Number of MIMO Antennas = 2 Outputs : LTE throughput = 6. 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. So in this case, very high performance IP data server is the most important factor for Jan 2, 2024 · One obvious ML use case is modeling DL-Throughput since measurement data throughput has been the key metric recently [9,10,11]. Which means that in LTE you will have even bigger TBS than HSPA+ Dual Carrier. 22 Mbps . Simply select network type and type in the LCID/CID. e. Another difference is about TBS each subframe as marked in blue. 5ms / 7 🔘 Symbol count = 7 in normal CP 🔘 Subcarrier bandwidth = 15 KHz 🔘 Subcarrier count in one PRB = 12 🔘 Transmission Time Interval = 1ms (minimum scheduling time for user, 2 PRB at once) Downlink Throughput Cell ID Calculator . Sep 1, 2020 · In the first cluster, min DL throughput in L2100 has a range of 2. Sep 12, 2020 · High PRB Utilization && Low User Number => that means serving UEs enjoying almost very satisfied throughput regarding to LTE 4G High PRB Utilization && Low DL Spectral efficiency . Feb 5, 2017 · Step 1: Identify cell with low DL (downlink) throughput. DL Latency and DL Latency and RLC retransmission RLC retransmission High value of DL latency(>9ms) and RLC retransmission(> 1%) High value of DL latency(>9ms) and RLC retransmission(> 1%) would impact DL throughput. Dec 29, 2022 · 4G, LTE Throughput. In this paper, two approaches for throughput analysis are examined: classical machine learning and time series forecasting. So if the system bandwidth of LTE channel changes, number of the channels (sub carriers) changes but the space between channels does not change. Ericsson defined throughput (UL or DL) is "the speed at which packets are being transferred by the time the first packet has been scheduled in the air interface". Jul 1, 2023 · 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 Oct 21, 2019 · Smart preallocation is automatically started once there DL data transmission. If you look at the graph on the right, you can see that as the RSRP reduces, the throughput also reduces. Jul 1, 2023 · Because Downlink Throughput (DL-Throughput) holds significant importance factors for network performance, DL-Throughput prediction can be used to evaluate the quality of cellular networks. Сalculator allows to calculate the maximum throughput of 4G LTE network for DL (downlink) and UL (uplink) Throughput Calculation - TDD . Date: December 29, 2022 Author: diegogonkov 1 Comment. Nov 22, 2017 · In This Chapter I would like to share about LTC improvement by traffic sharing/offload traffic 4G-4G in Huawei 4G LTE. would impact DL throughput. As LTE uses different channel bandwidths both for FDD and TDD. TDD throughput calculation is very similar to FDD case as you see below. It is a critical metric that directly impacts the user experience and the efficiency of the wireless network. 3 Carrier frequency and EARFCN. So, it is very likely that you would see low CQI when you see throughput drop in livenetwork test. In normal DL or UL subframe, TBS/subframe can be calculated in the same way as in FDD. 2 and 2. In LTE release 8 there is no carrier aggregation, so let’s just consider simple cases. This throughput often get configured with the throughput calculated at the last step of this process. initial throughput is multiplied by 2 or 4 either MIMO 2x2 or MIMO 4x4 selected, respectively. Mar 16, 2024 · 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. g. g, 100 Mbps and over) is pretty tough task not only for IP stack, but also the IP application software and CPU utilization. com Feb 5, 2024 · Let’s understand the various factors impacting the spectral efficiency and ways to perform LTE throughput optimization. The key difference is 'number of subframes /sec' parts as marked in red. (The reason is same as above) iii) With low CQI, it is for sure that you cannot achieve the maximum throughput. Networks on LTE band 5 (LTE-FDD) are suitable for roaming in ITU Regions 2 and 3. See full list on techtrained. The measured data were then compared with the 3GPP theoretical values in Sect. SmartPreAllocationDuration parameter and smart preallocation can be performed in DRX mode. g, you can monitor the CPU utilization using Windows Task Manager) Feb 25, 2020 · DL/UL Throughput , simultaneously For UE side testing one thing which is more important is testing majorly tested inside labs so need to introduce simulator and here comes the lab setup . ii) Low throughput does not necessarily mean low CQI. Since throughput is a major indicator of the network's performance, throughput modelling and prediction can be utilized for analyzing network quality. 3-1 and NDL is the downlink EARFCN. real user bit rate will be a bit lower). LTE Throughput Calculator . The following calculations are made for user data bit rates on IP layer (including IP headers and LTE overhead, i. This post is to address common issues that affects downlink throughput and also to dig into possible solutions. Feb 12, 2015 · The maximum data rate depends on channel bandwidth. The preallocation duration is specified by the CellUlschAlgo. 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. 3. The placement of the UE channel bandwidth for each UE carrier is flexible but can only be completely within the BS channel bandwidth. CEUs also have very low DL throughput during peak hours in the three bands (from 0. Networks on LTE band 20 (LTE-FDD) are suitable for roaming in ITU Region 1 only. Throughput is a basic KPI on any LTE network. The MCS, SINR, DL throughput, RSRP, and relationships between the essential parameters of the LTE network, were presented with a series of broken line graphs. #LTELowThroughput #4GLowThroughput#CQI #4GCQISubscribe Like & Share. 101: 5. In 5G NR, the base station channel bandwidth can be greater than or equal to the UE channel bandwidth. The quality of DL-Throughput is a critical element for video streaming and gaming. 1 Mbps). This threshold is defined by your network policies and Feb 1, 2017 · Physical layer data throughput can be calculated accurately for different scenarios. If coverage (RSRP) is bad, the throughput will be bad. Q> What is the space between a subcarrier and the next sub carrier ? A> 15 Khz B where B = 12 features after removing low correlated ones with UE DL throughput, and with one feature of the highly predict UE DL throughput in LTE cellular networks, which are Fig. 36. Use this calculator to calculate LTE throughput, and carrier aggregation Throughput. What is Throughput? • The term throughput refers to ratio of data transmitted in unit of time. 4. Various Machine Learning (ML) models utilized Long-Term Evolution (LTE) data measurements for the prediction process. a) The first thing is to identify those cells with low throughput. 4G LTE Throughput calculator. Oct 22, 2017 · Thank you for sharing this insightful article on LTE throughput optimization and the role of PDCCH enhancements in achieving it. 4 MHz 3 MHz 5 MHz 10 MHz 15 MHz 20 MHz It covers the same for 5G downlink throughput and 5G uplink throughput. Dec 1, 2023 · Since Verizon 5G mmwave was not received during these tests, the DL throughput is solely via aggregation of LTE and low-band NR. The breakdown of PDCCH structure and its aggregation layers provided a clear understanding of how scheduling allocations work for PDSCH and PUSCH, making it easier to comprehend the overall optimization process. PDCP, RLC and MAC). The relation between EARFCN and the carrier frequency in MHz for the downlink is given by the following equation, where FDL_low and NOffs-DL are given in Table 5. DL LTE level throughput (e. LTE throughput calculation formula or equation LTE throughput calculator Introduction The post presents the simplest way how to calculate LTE throughput. It is because there is some subframes where you cannot allocate full RBs (100 RBs in case of 20Mhz, Cat 3). djwxth gazb apxtu kqm tsl dfsemst pnkncbey cogtk xpaqk ihmb