Lte downlink data rate. The downlink uses the generic frame structure shown in Fig. In conclusion, when downlink PRB utilization ratio was greater than 50%, average RSSI of the network would rose to about −95 dBm; when RSSI was greater than −95 dBm, LTE uplink/downlink perception rate and access/handover success ratio 7. ). In this report, the focus is on PDSCH performancebecause it carries user data and is designed for wide a range of data rates. This is significant increase compared to IMT-Advanced (4G/LTE Release 14) that offers 1Gbps (downlink) and 50Mbps (uplink). 1 in the time domain. 1. SC-FDMA was chosen for its lower peak to average power ratio (PAPR) to maximize battery life in mobile devices. • Variable duplex technology within bands as well as between bands • Scalable bandwidth up to 20 MHz, covering 1. . 8 Mbit/s and an uplink data rate of 51. Uplink speeds of up to 50 Mbps and downlink speeds of up to 100 Mbps are possible with LTE Release 8. For more details, see the Layer Traces and Resource Element Distribution topic. LTE is an ideal technology to support high date rates for the services such as voice over IP (VOIP), streaming multimedia, videoconferencing or even a high-speed Jan 7, 2020 · With LTE-Advanced, you can get peak data rates of up to 1 Gbps in the downlink, which goes up to 3 Gbps with LTE Advanced Pro. Therefore, modulations include QPSK, 16QAM and 64QAM and the coding rate ranges from 1/6 to 3/4. Examples of downlink and uplink data rates for a 20 MHz channel are shown in Tables 11. 12. 7 Mbps (I believe this was referred to as 70Mbps by Leticia in her reply above), with all other settings (other than MIMO and user perception rate at far point is more sensitive to the fluctuation of RSSI level. Dec 30, 2023 · Supplementary Downlink (SDL) is a technology used in cellular networks, particularly in Long Term Evolution (LTE) networks, to enhance the downlink capacity by employing additional spectrum resources for data transmission from the base station (eNodeB) to the user equipment (UE). To obtain the correct result, it is necessary to enter such important parameters as: mode of 5G network, number of aggregated carriers, number LTE Physical Layer Overview. Generally scheduling algorithms aim at Jul 30, 2021 · Due to the growing demands of mobile communication system users, higher peak data bit rates of up to 1 Gbps are being sought. 0 Mbit/s with 2 layers of spatial multiplexing in downlink (DL). Code Rate . 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 have been increased. 7 kbps in these operation modes. Once the channel coding is performed, its output will be kept in a circular buffer where Redundancy Versions (RVs) are constituted. These high data rates are highly suited for HD or 1080p videos, gaming, voip, web surfing etc. The CP uses up part of the physical layer capacity: 7. 2 and 11. Downlink Packet Loss Rate. 4, 2. In an LTE-Advanced design, support of multiple antenna systems is necessary to achieve data rates of 1 Gbps in downlink and 500 Mbps in uplink within a bandwidth of 20 MHz. 2 [3]. Definition: The Downlink Packet Loss Rate KPI is defined by the following formula: Aug 10, 2020 · LTE is specifically designed for packet data communications, where the emphasis of the technologies high spectral efficiency, high peak data rates, low latency, and frequency flexibility. 5% in the case of normal cyclic prefix. The LTE provides asymmetric data rate for both downlink and uplink data channels. Mar 10, 2015 · The problem of allocating radio resources for data transmission in the downlink of the Long Term Evolution (LTE) systems is studied. 2 Gbit/s (downlink) and 600 Mbit/s (uplink). LTE defines MIMO configurations up to 4x4. It also carries other pieces of information, such as the different types of system information blocks, or SIB. Data Rate: 326 Mbps/down 86 Mbps up (4x4 MIMO 20 MHz) 9. Jul 26, 2020 · LTE-Advanced can support peak download data rates of up to 1 Gbps and LTE-Advanced Pro can provide maximum data rates of up to 3 Gbps. The transmission rate is one of the characteristics associated mostly with LTE. 3. Link adaptation in Long Term Evolution (LTE) systems dynamically adjusts the data rate of transmitted information (modulation scheme and channel code rate) to equalize the existing radio channel capacity assigned for each user. True 3G systems such as EV-DO, W-CDMA (including HSPA and HSPA+) provide combined circuit switched and packet switched data and voice services from the outset, usually at far better data rates than 2G networks with their extensions. The average 4G data speed is what you normally get on your mobile device, whereas the peak speed is the maximum data rate the network can theoretically generate. Release 11 and beyond includes enhancements to Carrier Aggregation, MIMO, and relay nodes, introduction of new frequency Dec 1, 2020 · PDF | On Dec 1, 2020, Emilio C. Jul 1, 2018 · In LTE downlink transmissions, a high data rate up to 300 Mbps is achievable using a scalable bandwidth of 5 to 20 MHz [6][7] [8]. Jun 10, 2016 · The long term evolution abbreviated as LTE is a latest and promising technology which gives 50 times higher performance as compare to matured technology systems. LTE is the evolutionary move based on UMTS standards including many changes and significant improvements identified by the 3GPP consortium. The following document serves to provide a general introduction to how data rates are estimated in LTE. Keywords Throughput, Downlink, Uplink, MIMO, data rate. OFDMA enables the LTE downlink to transmit data from a base station to multiple users at higher data rates than 3G, with improved spectral efficiency. In other words, it means "The code rate is defined as the ratio between the transport block size and the total number of physical layer bits per subframe tha An LTE network employs the multiuser variant of the orthogonal frequency-division multiplexing modulation scheme, called orthogonal frequency-division multiple access , for its downlink signal. Oct 29, 2015 · The principle of link adaptation is essential for the development of a radio interface project for efficient packet switching data traffic [1, 2]. Other LTE channels/signals are included in Layer traces for convenience. LTE achieves a peak downlink data rate of 100 Mbps and a peak uplink data rate of 50 Mbps with a 20 MHz bandwidth. The page covers covers what is data rate and provide downlink and uplink data rates of GSM,GPRS,HSCSD,EDGE,WCDMA,HSPA,CDMA,CDMA2000,TD-SCDMA and LTE wireless technologies. 5, 5, 10, 15, and 20 MHz The latest LTE enhancement, LTE Advanced Pro, can deliver peak data rates of up to 3 Gbps and average data rates of around 80 to 100 Mbps. This is 20Gbps (downlink) and 10Gbps (uplink). 25 MHz. LTE: Key Features (Cont) 8. !!! In the uplink however I was only able to achieve a datarate of 68. INTRODUCTION Long Term Evolution (LTE) is the evolution of the Third-Generation (3G) of mobile communications that create a new radio-access technology which provide high data rates, low For downlink signals, PDSCH Physical Downlink Shared Channel IQ data used in calculating this trace comes from the layer chosen when selecting this trace. The Mobile WiMAX (IEEE 802. 4G is an umbrella terminology that consists of cellular technologies that meet the requirements specified by 3GPP (Third Generation Partnership Project) for the fourth generation of mobile networks. The highest level view from 36. LTE is an ideal technology to support high date rates for the services such as voice over IP (VOIP), streaming multimedia, videoconferencing or even a high-speed May 19, 2019 · An LTE UE power consumption model was presented in Reference , suggesting that the uplink transmit power and the downlink data rate greatly affect the UE power consumption. The throughput achieved by the PDSCH depends upon the: o the number of resource elements allocated to the PDSCH o the modulation scheme applied to each resource element Jan 19, 2024 · Here are some key technical details related to LTE-M data rates: Downlink (DL) Data Rates: In LTE-M, the downlink data rates can range from a few kbps (kilobits per second) to around 1 Mbps (megabit per second). The scheduler present at the Evolved NodeB of the LTE network follows a specific scheduling algorithm to distribute the radio resources (available spectrum) among the users who request for carriers for data transmission. The coding chain includes the usual steps, such as CRC, code block segmentation, rate matching, and concatenation--all steps we're familiar with from LTE. Another big improvement with LTE Cat-NB2, especially for remote use, is the introduction of OTDOA (Observed Time Difference of Arrival) and E-CID (Enhanced Cell ID), allowing for higher location LTE Advanced, features peak data rate of 3 Gbps in downlink and 1. Jul 5, 2022 · This allows LTE to be installed in place of existing systems, including narrowband schemes such as GSM and CDMAOne, based on 1. LTE, Cellular Network, optimization technique, drive test. Overview - FDD : Frame Structure Type 1. This rising demand for network utilization has demonstrated the need for more service improvement. In practical, the data rates are generally reduced to one fourth of mathematical figures. In this report, the focus is on PDSCH performance because it carries user data and is designed for a wide range of data rates. 2 . 5 Gbps in uplink, higher order MIMO antenna configurations supporting up to 8×8 downlinks and 4×4 uplinks, and Carrier Aggregation (CA). The key requirement for an LTE mobile station is to use two antennas for uplink and two antennas for downlink. Table 10. Modulation: OFDM with QPSK, 16 QAM, 64 QAM 10. 29%. Therefore, modulations include QPSK, 16QAM and 64QAM and the Note: The 3. Jan 8, 2013 · With maximum MIMO assignments, 64QAM, and 100-MHz bandwidth, a peak downlink data rate of 1 Gbit/s is possible. As LTE uses different channel bandwidths both for FDD and TDD. LTE downlink: physical downlink shared channel (PDSCH), physical downlink control channel (PDCCH) and common control physical channel (CCPCH). This 21 dB gain corresponds to a data rate of 1400 bps in downlink and 250 bps in uplink Mar 3, 2020 · In simple terms, LTE Cat-NB2 is an incremental improvement over LTE Cat-NB1, allowing for bigger Transport Block Size (TBS) and higher max data rates. G. g. Hybrid ARQ Transmission Short Frame Sizes of 10ms and 1ms faster feedback and better efficiency at high speed 13 is used in urban cells and high data rate applications while the extended cyclic prefix is used in special cases like multi-cell broadcast and in very large cells (e. Starting with Release 10, LTE-Advanced was able to achieve peak downlink data speeds of up to 1 Gbps, higher throughput, more coverage, and shorter latencies. One way to reduce the Aug 2, 2012 · So maximum packet size that can give a higher than 17Mbps uplink/downlink data rate in LTE is (2047-30) = 2017 bytes. There are two types of frame structure in the LTE Long Term Evolution standard, Type 1 and Type 2. rural areas, low data rate applications). A more realistic maximum data rate for a single user is 1. Type 1 uses Frequency Division Duplexing (uplink and downlink separated by frequency), and TDD Time Division Duplex: A duplexing technique dividing a radio channel in time to allow downlink operation during part of the frame period and uplink operation in the customers for faster data speeds in mobile communication systems. 4G LTE Throughput calculator. Furthermore, with rising demand and complexity, traditional network management Jul 5, 2013 · In order to support downlink data services with high transmission rates, a BS transmits data using shared channels where the content that comes from many users is multiplexed in time and frequency domains. 4 Mbps with 20 MHz bandwidth • Operation in both TDD and FDD modes. 18. It evaluates the quality of data transmission by considering all services with various QCIs, including PTT services and extended QCIs. 5 Gbit/s data rate specified as Category 8 is near the peak aggregate data rate for a base station sector. Common channel overhead (adequate to serve 1 UE/subframe) = 10%. 17. 211 for FDD LTE is as follows. • Downlink peak data rates up to 326 Mbps with 20 MHz bandwidth • Uplink peak data rates up to 86. In LTE, data and control information are encoded down from the MAC to the physical layer and decoded back from physical to MAC layer to serve transport and control Channels. Jul 7, 2017 · Long Term Evolution (LTE), the fastest-growing commercial mobile standard [1, 2], is able to provide unprecedented very high data rate and extremely low latency [], specially in downlink (DL) at the expense of increasing complexity (in detection techniques [], energy efficiency [], cell capacity modeling [], dimensioning [], etc. This site is for everything on 4G/LTE. LTE/LTE-Advanced TDD Frame Configurations [3] Feb 4, 2021 · IMT-2020 specifies the maximum data rate that 5G is required to offer. For the sake of clarity we will simplify and deal with arguably one of the most common LTE configurations, per the following: is used in urban cells and high data rate applications while the extended cyclic prefix is used in special cases like multi-cell broadcast and in very large cells (e. Jul 1, 2014 · The 3GPP LTE system should support instantaneous downlink and uplink peak data rates of 100Mb/s and 50Mb/s within 20 MHz downlink and uplink spectrum allocations, respectively. Feb 12, 2015 · This tutorial explains how LTE downlink maximum throughput is determined. Wille and others published Latency-Rate Downlink Packet Scheduler for LTE Networks | Find, read and cite all the research you need on ResearchGate LTE introduced to get higher data rates, 300Mbps peak downlink and 75 Mbps peak uplink. 4 Gbit/s using 100 MHz of aggregated spectrum. 306 standard: NR User Equipment (UE) radio access capabilities and uses formula to obtain a 5G NR Throughput data rate in the DL (downlink) and the UL (uplink). The lower data rates are suitable for applications that require periodic data exchange, such as sensor readings, monitoring, and Jul 12, 2023 · The calculation is based on the 3GPP TS 38. One way to reduce the In practical, the data rates are generally reduced to one fourth of mathematical figures. As a result, appropriate scheduling policies are in demand in order to achieve desired performance and QoS level by the BS users. This KPI measures the overall packet loss rate in the downlink direction at the PDCP layer. Pls correct me if this is wrong. Jan 12, 2021 · According to the actual maximum data rates, LTE Cat 1 is capable of 10 and 5 Mbps for downlink and uplink, respectively. All of these services can be used to provide combined mobile voice access and Internet access at remote locations. It is recommended to read OFDMA/SC-FDMA sections to clearly understand throughput calculation in LTE. That makes LTE Cat 1 suitable for bandwidth-intensive IoT applications, especially if peak rates need to be on that level. 0 Gbit/s / 1. In wireless system, these terms uplink and downlink are used to indicate channels (uplink channel, downlink channel) , frame structure (uplink frame, downlink frame), packets (uplink packet, downlink packet) and so on. 1 DOWNLINK BIT RATES The Physical Downlink Shared Channel (PDSCH) is used to transfer application data. Сalculator allows to calculate the maximum throughput of 4G LTE network for DL (downlink) and UL (uplink) The LTE specification provides downlink peak rates of 300 Mbit/s, uplink peak rates of 75 Mbit/s and QoS provisions permitting a transfer latency of less than 5 ms in the radio access network. LTE Advanced and LTE-Advanced Pro are enhancements added to the original 4G LTE networks. The maximum data rate depends on channel bandwidth. SDL operates by utilizing an additional frequency band allocated specifically The Long Term Evolution (LTE) is designed to meet the optimal data rate (data throughput) and efficient use of spectrum under the specified standards of 3rd Generation Partnership Project (3GPP) in Release 8. Therefore, to improve battery life of UE, it is critical to study the impact of P max limit for the LTE uplink. The key finding is that LTE-M can realistically support a coverage gain of 21 dB relative to legacy LTE devices, which exceeds the 18 dB 3GPP target. As a result, the Long-Term Evolution Advanced (LTE-Advanced) as an May 27, 2024 · LTE Cat-4 UEs support a downlink data rate of 150. In downlink direction LTE provides date rate up to 300 and 75 Mbps for uplink direction. OFDMA downlink, Single Carrier Frequency Division Multiple Access (SC-FDMA) uplink 11. With just one additional antenna than LTE Cat 1 technology, LTE Cat 4 provides a higher data rate of about 10x more than the LTE Cat 1. This is a simple and straightforward formula for data rate calculation. 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. NB-IoT instantaneous peak physical layer data rates are summarized in Table 8. The peak L1 downlink data rate is thus 226. So, the peak speed of a mobile connection is the OFDMA was chosen for its high data rate capacity and its high spectral efficiency. ITFDS: Channel-aware integrated time and frequency-based In this case 21 TABLE IV N OTATIONS USED FOR SCHEDULING METRICS Expression Meaning Generic metric of the i-th user on the k-th RB mi,k Data-rate achieved by the i-th user at time t i r (t) Past average throughput achieved by the i-th user until Ri (t) time t Average throughput achieved by data flow of the i-th user i Rsch (t) when scheduled Aug 1, 2017 · Long Term Evolution (LTE) standard is conceived as an all IP network to achieve higher data rate, low latency, scalable bandwidth, mobility and extended coverage. In LTE/LTE-Advanced, there are seven different patterns of uplink/downlink switching known as uplink–downlink configurations 0 through 6 that are shown in Table 10. Simply put, the code rate can be defined as the ratio of the data rate that is allocated for a subframe and the maximum data rate that ideally can be allocated in the subframe. 16e-2005) mobile wireless broadband access (MWBA) standard (also known as WiBro in South Korea) is sometimes branded 4G, and offers peak data rates of 128 Mbit/s downlink and 56 Mbit/s uplink over 20 MHz wide channels. When you are connected to LTE Advanced or LTE-Advanced Pro network, you can expect an average download speed of 50-80 Mbps. There are several bottlenecks in modem physical layer and data link layer protocols that can effect actual data rate. For the in-band mode, the shortest time duration for NPDSCH carrying a 680-bit transport block is 4 ms, giving an instantaneous peak physical layer downlink data rate of 170 kbps. LTE introduced to get higher data rates, 300Mbps peak downlink and 75 Mbps peak uplink. It only shows the structure of one frame in time domain. Jan 1, 2013 · In Long Term Evaluation (LTE)-Advanced system, Carrier Aggregation (CA) technique that provide substantial enhancement in data rate transmission for downlink and uplink over wider bandwidth have May 23, 2019 · The downlink shared channel, or DL-SCH, is the channel that carries user data. This article can help readers understand how 4G data speeds are calculated at a theoretical level. In a 20MHz carrier, data rates beyond 300Mbps can be achieved under very good signal conditions. Jun 27, 2011 · There is another technique to calculate the peak capacity which I include here as well for a 2×20 MHz LTE system with 4×4 MIMO configuration and 64QAM code rate 1: Downlink data rate: Pilot overhead (4 Tx antennas) = 14. One vendor has demonstrated downlink speeds of 1. layer simulation analysis to evaluate the actual coverage performance of 3GPP’s LPWA LTE-M technology. LTE has the ability to manage fast-moving mobiles and supports multi-cast and broadcast streams. Jan 1, 2019 · LTE downlink physical channel processing. baoefdhqcbsoarxbrnfoqzblhuqqydnpxyhdkcyptqbbqsjfsukeam