0 MHz, 10 MHz, 15 MHz, and 20 MHz. LTE frames are 10 msec in duration. The slots are divided into symbols – each slot has either 6 or 7 symbols. It improves on those standards' capacity and speed by using a different radio interface and core network improvements. This video then walks you through the concept of carriers and bandwidth parts, and. Figure 1 shows frame structure type 1, which can be used in either full-duplex or half-duplex FDD mode. LAA . 2. Alternative PDSCH DM-RS pattern when LTE CRS rate matching is configured; 7. LTE Frame Structure A frame, which is a major component in LTE commu-nication, is a two-dimensional grid representing time and frequency. LTE (telecommunication) In telecommunications, long-term evolution ( LTE) is a standard for wireless broadband communication for mobile devices and data terminals, based on the GSM / EDGE and UMTS / HSPA standards. com LTE Frame structure. Special Slot Usage LTE Frame Structure Type2 . Hybrid ARQ Transmission Short Frame Sizes of 10ms and 1ms faster feedback and better efficiency at high speed. Type 1: FDD : Frequency Division Duplex. This new frame structure is designed to make LTE signal similar to WLAN burst. 25 MHz to 20 MHz. High bandwidth and low latency are key selling points of 5G, and ones that businesses have been eager to adopt. LTE system basic parameters and LTE Frame structure: Frame Size=10ms No. No. The slot is of 0. For more information, see LTE Toolbox™. LTE Subframes then consist of two slots – in other words there are ten. 2. MCE, MBSFN Gateway and BM-SC are. Supporting WiFi and LTE Co-existence Sangki Yun, Lili Qiu The University of Texas at Austin Abstract—Motivated by the recent push to deploy LTE in. A phone must typically perform the following tasks (Figure 5): Acquire a signal on a given LTE carrier frequency. from publication: A modified CA-CFAR method for LTE random access detection | Random Access is an important aspect of mobile. K. 55ns. The tutorial on LTE also covers LTE protocol stack, LTE physical layer, LTE network architecture and so on. Demodulating an LTE Signal in MATLAB with LTE System Toolbox. Choose a configuration with more “D”s in the frame means greater proportion of Downlink Data (normal for most Internet /ISP applications). Based on the review of latest 3GPP documents, this paper describes. For example, the length of PRACH with preamble format 0 is (3186 + 24567) Samples. For the normal mode, the first symbol has a cyclic prefix of length TCP = 160 ⋅ Ts ≈ 5. In TD-SCDMA a super-frame of 720 ms duration is made of 72 radio frames of 10 ms duration each. TD CP Sub Carrier of Configuration Symbol Length each RB 160 @ Slot 0 Normal f=15k CP Hz 144 @ Slot 12 7 1-6 Extended f=15k 512 @. The LTE physical layer supports two types of frame structures as types 1 and 2. 8 supports scalable RF channel bandwidths from 1. Each radio frame of length Tf = 307200*Ts = 10 ms consists of two half-frames of length Tf = 153600*Ts = 5 ms each. Number of Subframes in a Radio Frame = 10. . Basic time unit Ts for BW of 20MHz, (1/15000)*2048 seconds equal to 32. Particular attention is given to LTE’s use of multiple antenna techniques and to the modulation scheme called single carrier frequency division multiple access (SCFDMA). S. 72 MS/s, which is valid for the 20 MHz LTE bandwidth mode. Tables defining Uplink Frame Structure . This is because neighboring cells are generally required to use different cell IDs. In TDD, one single frequency will be. This video looks at OFDM waveforms, and the different subcarrier spacings supported in 5G NR. SI-1 transmitted every 80ms, SI-2 every 160ms and SI-3 every 320 ms. FDD and TDD mode can be combined (depends on UE capabilities) in the same physical layer. LTE Frame Structure SU0 SU1 SU2 Superframes (10 ms) SF0 SF1 SF2 SF3 SF4 SF5 SF6 SF9 Subframes (1ms) Ref: Rhode and Schwarz, “UMTS Long Term Evolution (LTE) Technology Introduction,”. Each radio frame is divided into 10 subframes (each being 1ms long). OVERVIEW The design of the LTE physical layer (PHY) is heavily influenced by the requirements for high peak transmission rate (100 Mbps DL/50 Mbps UL), spectral. 6 GHz). See the differences and similarities with legacy LTE. Type 1: used for the LTE FDD mode systems. OFDMA downlink, Single Carrier Frequency Division Multiple Access (SC-FDMA) uplink 11. Each subframe has a length of 1 ms, which comprises 30,720 complex time-domain baseband samples sampled at a rate of 30. 2 Zadoff−Chu (ZC) sequences 189 9. • A radio frame has duration of 10 ms. type-1 and type-2 LTE frame structure. As mentioned as per topologies, TDD and FDD there are two frame structures viz. Hierarchy of Frame Structure : Frame (Radio Frame) --> SubFrame --> Slot (Same as in 5G/NR) Number of slots within 1 subframe : 2 only, but the concept of slot is not used often in LTE. But now, with the introduction of LTE system toolbox [7], the parameters. You would see that the length of PRACH preamble varies depending on the preamble format. Each radio frame will have a total of ten subframes, each with two time slots. Figure 1: LTE Generic Frame Structure [3] 2. The frame structure for the type 2 frames used on LTE TDD is somewhat different. LTE employs a time division duplex (TDD) or frequency division duplex (FDD) mode, each with a specific frame structure. Learn the details of LTE-NB frame structure for downlink operation mode, including the subframe mapping, the reference signal, the NPBCH, NPSS and NSSS. design, LTE frame structure dedicated some channels for data and they are called data channels while others for control information, known as control channels. Keywords: 3GPP, LTE, LTE-A, LTE system toolbox, Physical frame structure I. 3 Context management over S1 14 6. Frame Structure Type2 Configuration . These two frames, which are incompatible with each other, will require new functionalities to avoid interference at borders. Radio frames and subframes are of fixed lengths. 2) There are 10 Sub-frames in each Radio frame. of slots=20. The duration of each subframe is 1 ms. Refer 5G NR Frame structure >> and LTE frame structure >> for more information. For the examples of TDD resource grids for each Subframe DL/UL Configuration and Special Subframe Configuration, see Frame Structure Frame Type 2 Overview section. LTE TDD frame 36. Channel Mapping. Downlink. • A resource block (RB) spans 12 subcarriers over a slot duration of 0. LTE Frame Structure; LTE channels and mappings; RLC, RRC / NAS, PDSCH, PDCCH, HO; 5G core reference architecture; Towards the end of the 4G LTE course, you will learn in-depth about the LTE MAC Scheduler, LTE EPC nodes and interfaces. 4G/LTE - MBSFN. Uplink Frame Structure of LTE-NB can be summarized in the following three tables. The design considera-tions are explained below. 2. KPI & Features Frame Structure Downlink Time Domain Frame Structure Downlink Time Domain Cont. e, 2G/3G, LTE, NR). from below figure you can see for μ = 0 (highlighted row) Number of OFDM symbols in one slot = 14. There are two types of LTE frame structure: 1. As shown in Fig. Type 1 is used as LTE FDD frame structure. Frame Structure2. 1 PN sequence 187 9. The frame structures for LTE differ between the Time Division Duplex, TDD and the Frequency Division Duplex, FDD modes as there are different requirements on segregating the transmitted data. This is the same as in LTE, facilitating NR and LTE coexistence. LTE-V2X PHY-layer Structure 10 LTE frames divided into 1 subframes Channel divided into resource blocks (RBs) 180 kHz RB contains:. LTE-A Frame Structure. We. In the LTE standard (E-UTRA Citation 2019), OFDM signals are specified by three parameters, namely, the number of subcarriers or the Fast Fourier. Alternative frame structures are defined for use with TDD. When selecting one of the LTE Frame Configuration15 The Figure below shows respective position of the uplink demodulation reference signal in FDD LTE uplink frame structure including sounding reference signal position. CellAdvisor LTE frame analysis — unicast (PDSCH) and broadcast (MBMS) allocations Performance MBMS-SFN services are static and do not vary over time. 4MHZ. TETRA Frame Structure. Frame-Structure in LTE. A standard LTE system architecture consists of an Evolved UMTS Terrestrial Radio Access Network, more commonly known as E-UTRAN, and the System Architecture Evolution, also known as SAE. . The remaining six symbols have a cyclic prefix of length TCP = 144 ⋅ Ts ≈ 4. For example, S-CCPCH is transmitted at the multiples of 256 chips delay from the start of CPICH(Start of frame timing). 2) Each subframe has two slots of 0. Telecom. 211: “Physical Channels and Modulation” - 3GPP TS 36. LTE system basic parameters and LTE Frame structure: Frame Size=10ms. The indices m0 and m1 are derived from cell ID group , which is defined as “Table 6. 12. In TDD there are about 7 frame configurations, based on different DL/UL. In TDD, one single frequency will be used at. Answer-1:The difference lies in the LTE frame structure in both the FDD and TDD versions of the LTE. The performance comparison of the different 5G NR numerologies at various speeds and frequencies and within most common 5G scenarios was made with 1000 transmission time intervals (TTI) per numerology, using the PHY layer parameters of LTE and adjusting the frame structure with the parameters of the. Each subframe consists of two slots. As shown in the diagram, This radio frame is made up of two half frames, each lasting 5ms, for a total frame duration of around 10ms. SAE’s main component is the Evolved Packet Core, also known as an EPC. These two frames, which are incompatible with each other, will require new functionalities to avoid interference at borders. Although a slot is a typical unit for transmission upon which scheduling operates, NR enables transmission to LTE-Advanced Physical Layer Overview. ‘Stand-alone operation’ utilizing for example the spectrum currently being used by GERAN systems as a replacement of one or more GSM carriers. Hybrid ARQ Transmission Short Frame Sizes of 10ms and 1ms faster feedback and better efficiency at high speed 13. But in NR, the number of slots varies according to the numerology. Three different types of physical channels are defined for theFigures 1 and 2 show the frame structures referenced in Table 1 . A subframe is of 1 msec, A slot is of 0. 5 ms. Two duplex schemes FDD and TDD are supported. The Evolved Packet Core (EPC). Figure 1 : Downlink Physical Channel Structure. The 10 ms frame comprises two half frames, each 5 ms long. Presentation about LTE frame structure TRANSCRIPT. It consists of a 10 ms radio frame divided into 20 slots, each with a duration of 0. Like LTE-U, this is a kind of technology to transmit LTE signal in unlicensed frequency range. 11 devices. 36. Bandwidth: LTE supports different bandwidth configurations, such as 1. Fig. Each. In the special slot, symbols allocated for downlink, gap and uplink are 10:2:2 respectively. It was combination of Time Domain, Frequency Domain and the modulation scheme. 5 ms. 5 ms. This video talks about LTE Physical Layer and LTE Air Interface. 101: “Evolved Universal Terrestrial Radio Access (E-UTRA); User Equipment (UE) radio transmission and reception” - 3GPP TS 36. LTE Frame structure in muted MBSFN subframe based DSS. Different from LTE SR, where a UE supports only one SR. Even though they use a little bit different name, in all cellular technology (CDMA, GSM, WCDMA, LTE) there is a specific signal that perform the same function. NR Frame structure in muted MBS subframe based DSS. Timing Advance in LTE . Selection of a special slot configuration Downlink and uplink transmissions are organized into radio frames with 10 ms duration. In 5G/NR, we don't have any predefined pattern. Bandwidth will be scalable from 1. 5 ms) in the time. It’s been a key technology behind expansion of Internet of Things (IoT) devices, and has helped prove. Like LTE-U, this is a kind of technology to transmit LTE signal in unlicensed frequency range. IP packets are reformed in the PDCP SDUs and flow through the RLC, MAC, and PHY layers. This Video Explains the LTE technology basics, OFDMA and LTE Frame Structures and types. Transmit Diversity & Receive. Introduction The communication scenario in the world is growing at a large pace and the industry is gearing up for a thousand times more faster and reliable data rates. 2. The LTE standard uses Orthogonal Frequency Division Multiplexing (OFDM) modulation to achieve robust transmission in multipath scenarios (Liu et al. The Evolved UMTS Terrestrial Radio Access Network (E-UTRAN). A groThe Long Term Evolution (LTE, 4G ) standard defined by the 3GPP supports both FDD and TDD Duplex mode. When you study the physical frame structure of LTE, you may be impressed by flexibility (meaning complexity in other way) of all the possible ways of resource allocation. The air interface described in this book covers the concepts of LTE frame structure, downlink and uplink scheduling, and detailed illustrations of the data flow across the protocol layers. How about SSB? We can. In this video we discuss three focus areas; Downlink Frame Structure, Uplink Frame Structure, and TDD Options. In this page, I will describe on NR Frame Structure that is specified in 3GPP specification (38. Similar as most of the previous researches [8, 9, 11, 15, 16], only downlink communication is considered in this work. ms each) while each sub-frame is further divided into 2 slots (0. Downlink modulation types: QPSK, 16-QAM, and 64-QAMthe LTE communication protocol. The LTE standard uses Orthogonal Frequency Division Multiplexing (OFDM) modulation to achieve robust transmission in multipath scenarios (Liu et al. 3 Downlink frame structure 190 9. Last but not least, we provide an overview. Frame-Structure in LTE. 2. The Evolved Packet Core (EPC). iv) System Frame Number for each frame from P-CCPCH (MIB) Once UE get all the information listed above, the timing for other channels can be deduced by the following diagram (This diagram came from 3GPP TS 25. Define LTE Frame Structure? How many Sub-frame present in single Frame-Structure? What is Cyclic Prefix? How many OFDM symbols are available in 1 Time. But anyway good thing to me was that the most important factors in uplink slot is same as the one in the downlink. LTE Introduction. Subframes #0 and #5 are always assigned to DL, and subframe #2 is always assigned to UL. A. Each slot occupies either 7 symbols (for normal CP) and 6 symbols (for. Network and Protocol Architecture. This site is for everything on 4G/LTE. The special. One Frame consists of 10 subframes. However, unlike LTE-U, LAA use a special physical layer frame structure called Frame Structure Type 3 which didn't exisit before. 4G LTE, 5G NR and beyond while continuing to serve as a reliable mobile communication platform in various regions. The LTE radio frame for downlink and uplink transmission is long. 25 to 52. 5 ms 1 subframe = 1 ms #0 #1 #19 Special subframes containing: DwPTS: downlink pilot time slot UpPTS: uplink pilot time slot GP: guard period for TDD operation Possible uplink-downlink configurations (D=Downlink,There are two types of LTE frame structures. LTE Frame structure. 211 frame structure type 2 (DL / UL / SSF) Filter. It does not show any structure in frequency domain. Each frame is divided into 10 subframes of 1 millisecond, and the subframe is further divided into slots according to numerology. The minimum unit being frame (or TDMA frame) is made of 8 time slots. · Each Radio frame consists two half frames. The overall feature of NB IoT is now outlined in 3GPP RP-151621 as follows. design, LTE frame structure dedicated some channels for data and they are called data channels while others for control information, known as control channels. In TDD (Time division duplex) technique we are using, same frequency or frame for both DL and UL but at a different time. When an LTE system in one country is within the footprint of a satellite service owned by another country, to prevent the interference from the satellite services, the LTE system will avoid using the overlapped frequency bands. The type 1 FDD-based radio frame structure is shown in Figure 2. Portal frames look like a door. Frame Structure 10ms frames 10. Overview - FDD : Frame Structure Type 1 The highest level view from 36. 3. This application note describes the Long Term Evolution (LTE) of the universal mobile telecommunication system (UMTS) standard by the 3rd Generation Partnership Project (3GPP). Figure 1: TD-LTE Frame Structures Each one millisecond downlink subframe contains blocks of data (“resource. Type 1 radio frame has a duration 10 ms and consists of equally sized 20 slots each of 0. Page 2 - 2 - INHA UNIVERSITY. The air interface described in the chapter covers the concepts of LTE frame structure, downlink and uplink scheduling, and detailed illustrations of the data flow across the protocol layers. 55ns. I would just put down a high level descriptions of the difference here. It is composed of 20 slots of 0. Figure 2. It describes the details of the optimization process including performance measurements and troubleshooting mechanisms in addition to demonstrating common. I am happy to share the top articles of ShareTechNote in 2022 for 5G NR, 4G LTE and Engineering Math. Each frame is divided into 10 subframes of 1 millisecond, and the subframe is further divided into slots according to numerology. Frame Structure - Candidates before 3GPP . The PHY. LTE tutorial- This tutorial on LTE covers LTE system overview, LTE air interface,LTE SAE and provide link for LTE Frame structure, LTE physical layer,LTE protocol stack,LTE terminologies,LTE advanced,LTE vendors etc. Selection of normal or extended prefix e. Data Rate: 326 Mbps/down 86 Mbps up (4x4 MIMO 20 MHz) 9. Frame Structure Downlink Uplink Reference Signal. (shown for 5ms switch point periodicity). 4. FDD downlink frame structure detailed; TDD frame structure; LTE (any OFDM/OFDMA) band is made up of multiple small spaced channels and we call each of these small channels as “Sub Carrier”. 9. 5 kHz UL shift . As mentioned TETRA frame is basically TDMA frame. One subcarrier has bandwidth of 15 kHz. 4G, 4. Frame structure 5G. The resource element, which is 1 subcarrier x 1 symbol, is the smallest discrete part of the frame and contains a single complex value representing data from a physical channel or signal. C. – Frame structure type 1 (FS1): FDD. in subframes 0 and 5 of each 10 ms radio frame • Used in initial cell search • Common scheme irrespective to bandwidth simplify the procedure Physical broadcast channel (PBCH) in. It consists of a 10 ms radio frame divided into 20 slots, numbered 0 to 19, each with a duration of 0. cyclic prefix). 101: “Evolved Universal Terrestrial. The high-level network architecture of LTE is comprised of following three main components: The User Equipment (UE). Performance analysis of OFDMA in LTE. 2. 4Time Division Duplex (TDD) In TDD, isolated cell clusters at higher frequencies can be used, where path loss reduces inter-cell interference. When a UE receives the LTE signal, it must first convert the signal into the frame structure to be able to extract the transmitted information. In order to make use of the overlapped LTE bands, a Downlink Only Frame Structure (DOFS) approach is proposed in this. Figure 1: LTE Generic Frame Structure [3] 2. It only shows the structure of one frame in time domain. In this example we will be simulating what happens when a mobile phone is turned on. LTE protocols in connected or idle mode). 4 MHz to 20 MHz. Choose a configuration with more “D”s in the frame means greater proportion of Downlink Data (normal for most Internet /ISP applications) Tables defining Uplink Frame Structure; Frame Structure/Resource Grid; RU (Resource Unit) Tables defining Uplink Frame Structure . The second component enables shorter transmission durations (Figure 2), which is a more radical change of the LTE frame structure. A phone must typically perform the following tasks (Figure 5): Acquire a signal on a given LTE carrier frequency. System Information. The chapter concludes with an end‐to‐end procedure of when the UE powers‐up in an LTE network, interchanging data with the network and mobiles around. LTE: Key Features 2. 2 Physical Resources 12The LTE throughput optimization procedure described in this article requires PDCCH enhancements. Download scientific diagram | LTE frame structure used with FDD from publication: Experimental investigation on target detection and tracking in passive radar using long-term evolution signal. Sub frame duration=1 ms. 3GPP LTE Frame Structure 2, Applicable to TDD. Time z) Subcarrier (15 kHz) Symbol | 19 LTE-V2X PHY-layer Structure A 10 MHz channel comprises 50 RBs (20 MHz →100 RBs) Divided into several equal-size subchannels Each subchannel divided into control and. So if the system. Figure 10: Frame structure in LTE. This allows LTE technology to fit within either existing or new carrier spectrum allocations. 25 MHz to 20 MHz. Now (as of Sep 2017) 3GPP official specification (38. The evolved packet core communicates with packet data networks in the outside world such as the internet, private corporate networks or. A new LTE frame type (i. Signal analysis. PRACH Preamble Format . INHA UNIVERSITY. A. The LTE frame is formed of 10 subframes (SF) of duration 1 ms each and sub-divided into 14 OFDM symbols. The fig-2 depicts the TETRA frame structure. The STS-1 frame of SDH is composed of section overhead, transport overhead, payload overhead and data part. 2 < LTE Downlink Reference Signal - RE Mapping > Note 1 : The DL Reference Signal (Cell Specific Reference Signal) is mainly determined by Physical. 211 V16. The chapter concludes with an end-to-end procedure of when the UE powers-up in an LTE network, interchanging data with the network and mobiles around. The LTE physical layer supports two types of frame structures as types 1 and 2. . Because of variable subcarrier spacing, the. 0 Release 10 . Since the modulation format is OFDM (regular OFDM for the downlink, and DFT- precoded OFDM in the uplink. from publication: Analytical Link Performance Evaluation of LTE Downlink with Carrier Frequency Offset | In this paper, we evaluate the link. . Suresh Sahni. Each radio frame is divided into 10 subframes (each being 1ms long). Now (as of Sep 2017) 3GPP official specification (38. With this shift, the sequence of subframes in the LTE frame becomes D, D, S, U, U, which is the same structure of the Cambium PMP frame (downlink, turnaround time, uplink). Citation 2014). Type 2 LTE Frame Structure. One subframe consists of two slots each having 0. This generic frame structure is used with FDD. The Spc SF is placed between. It means Subcarrier spacing of the Pre-Trial is 5 times wider than LTE subcarrier spacing. For frame structure type TDD the uplink-downlink configuration and subframe number are also required. The access frame is access of 15 access slots and lasts 20 ms (2 radio frames). In telecommunications, long-term evolution ( LTE) is a standard for wireless broadband communication for mobile devices and data terminals, based on the GSM / EDGE and UMTS / HSPA standards. There are two types of frames in LTE;FDD and TDD. Modulation: OFDM with QPSK, 16 QAM, 64 QAM 10. 25 MHz. Expected in the 2008 time frame, LTE is a 3GPP standard that provides for an uplink speed of up to 50 megabits per second (Mbps) and a downlink speed of up to 100 Mbps. As shown in Figure 2, the LTE sub-frame is composed of 7 OFDMA symbols and, according to table 1, in each OFDMA symbol only N m − 1 sub. 4) is applied to Time Division Duplex (TDD) mode maintaining only full duplex operation. 5 ms. 211) defines the Frame Structure. Figure 2: LTE frame structure type 1 [2] LTE frame. Instead, we can define the pattern in much more flexible way using several parameters as shown below. This is a cluster-based frame structure alignment, where the instantaneous uplink and downlink traffic situation. FDD downlink frame structure detailed; TDD frame structure; LTE (any OFDM/OFDMA) band is made up of multiple small spaced channels and we call each of these small channels as “Sub Carrier”. The LTE control region consists of one or more OFDM symbols in the beginning of the subframe and the LTE data region consists of the. · It consists in a category of Frame 2. (normal cyclic prefix) or six (extended cyclic prefix). LTE uses the concept of a resource block, which is a block of 12 subcarriers in one slot. THE Mobile Broadband Standard. Thus, the subcarrier and symbol are the frequency and time indices of an RE, respectively. Downlink ※ Reference - 3GPP TS 36. (Basic LTE-A) Simultaneous PUCCH and PUSCH (Advanced LTE) Scalable bandwidth: 1. A frame structure is disclosed herein that aims to provide more flexibility. 1-1: Mapping between cell-identity group and the indices m0 and. This page introduces several candiates for 5G Frame Structure before 3GPP finalize the specification. There can be a variable number of slots per subframe, with 14 OFDM symbols per slot. 3 Mode of Operation : 1. The PSS signal is the same for any given. A brief description of the model is provided. Answer-1:The difference lies in the LTE frame structure in both the FDD and TDD versions of the LTE. Frame structure 2 is commonly used. LTE frame structure. LTE-A Frame Structure. As of now, around 16 carriers can be aggregation in. Frame structure Type 1 is illustrated in the upper portion of Figure 9-66. When data is available in the LAA transmission queue, the basestation employs energy detection to sense the wireless channel and determine whether it is busy or idle. As described above, in 5G/NR multiple numerologies (waveform configuration like subframe spacing) are supported and the radio frame structure gets a little bit different. The PSS & SSS generation generates PSS,. LTE RACH in Details . – Frame structure type 1 (FS1): FDD. 3 16. CellAdvisor LTE frame analysis — unicast (PDSCH) and broadcast (MBMS) allocations Performance MBMS-SFN services are static and do not vary over time. Each radio frame consists of two identical 5 ms half-frames. Each LTE frame has 10 sub-frames (1 ms each) while each sub-frame is further. Special Subframes Radio Frame Length = 10 ms. Spectrum utilization efficiency of LTE and NR bands with and without cross-band DSS. 3. The structure of the HDL LTE MIMO Transmitter subsystem is shown below. The frame structure below ( Figure 1) is applicable to TDD. In LTE, DL and UL transmissions are organized into radio frames of 10 ms each. 211 V1. 10 Variable Subcarrier Spacing Slot configuration 0 Subcarrier spacing (kHz) 15 30 60 120 240 Symbol duration (no CP) (μs) 66. Expected in the 2008 time frame, LTE is a 3GPP standard that provides for an uplink speed of up to 50 megabits per second (Mbps) and a downlink speed of up to 100 Mbps. 5 ms. This is the same as in LTE, facilitating NR and LTE coexistence.