The LTE uses 2 CP sizes – Normal. divided into symbols – each slot has either 6 or 7 symbols. 11 devices. 2. LTE-NB frame structure can be summarized as follows. The 10 ms frame comprises two half frames, each 5 ms long. m1” (see appendix 2). Frame Structure The following figure shows the frame structure of an LTE signal (FDD). One element that is shared by the LTE Downlink and Uplink is the generic frame structure. This Video Explains the LTE technology basics, OFDMA and LTE Frame Structures and types. This video looks at OFDM waveforms, and the different subcarrier spacings supported in 5G NR. PHICH (Physical Hybrid ARQ (Automatic Repeat reQuest) Indicator Channel) PDCCH (Physical Downlink Control Channel) Available for PDSCH (Physical Downlink Shared Channel) TDD guard period in special subframe. in 1 slot, the number of symbols are fixed that is 14-with normal cyclic prefix (CP) and 12-with extended CP. The 51-frame structure used for control channels is considerably more complex than the 26-frame structure used for the traffic channels. 0. 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. OFDM with a cyclic prefix is the basic modulation scheme selected to combat severe frequency-selective multipath fading. It’s been a key technology behind expansion of Internet of Things (IoT) devices, and has helped prove. II. The REs are. Alternative frame structures are defined for use with TDD. Download scientific diagram | LTE frame structure in FDD mode: 7 OFDM symbols with normal CP [7]. 1 PN sequence 187 9. Frame structure of the LTE resource grid. Each subframe consists of two slots. LTE TDD Overview. INHA UNIVERSITY. Type 1: Used in LTE FDD. Figure 2: LTE frame structure type 1 [2] LTE frame. No. 5G Frame Structure in Detail . Alternative PDSCH DM-RS pattern when LTE CRS rate matching is configured; 7. The SSS has 168 cell ID groups that are generated from cyclic shifts of sequences and . 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. Variable number of OFDM symbols per subframe (different from LTE) frame: 10 ms. 33 4. i Understanding and Development of Inter-cell Interference Mitigation mechanism in LTE-A Heterogeneous Network Förståelse och utveckling av Inter-interferens Mitigation mekanism i LTE-AVery Basic understanding of Frame , subframe , slots and OFDM symbolsThe fundamental time unit of LTE transmission is a radio frame, which has a duration of 10 ms. Transmit Diversity & Receive Diversity . As shown 5 ms periodicity frame have two “S” subframe and 10 mili sec frames. • LTE Frame Structure • LTE Resource Grid • LTE Bandwidth/Resource Configuration • LTE Channels • LTE Protocol Architecture . A frame has 10 subframes having 1ms duration each. 25 MHz to 20 MHz. LTE system basic parameters and LTE Frame structure: Frame Size=10ms. 25KHZ, whereas UL Subcarrier=15KHz. The Fading parameters are available for Advanced LTE and Advanced LTE-A TDD carriers only. Each LTE frame has 10 sub-frames (1 ms each) while each sub-frame is further divided into 2 slots (0. There are two types of frame structures in LTE; type 1 used for FDD and type 2 for TDD, as shown in the diagrams above. 2 Frame Structure and Physical Resources 11 4. Each GSM superframe composed of multiframes (either 26 or 51 as described below). 5 ms. Different from LTE SR, where a UE supports only one SR. The number of symbols per. The duration of each subframe is 1 ms. This video looks at OFDM waveforms, and the different subcarrier spacings supported in 5G NR. 10 mili second radio frame consists of Downlink subframe, Uplink subframe and Special subframe. There are two types of LTE frame structure: 1. of slots=20. Three different types of physical channels are defined for theIn LTE, a subframe is used as a minimum scheduling unit in time-domain while in NR, a slot is used as a dynamic scheduling unit. 1. The type 1 structure (Fig. Each LTE frame has 10 sub-frames (1 ms each) while each sub. 5ms each). . This provides several benefits, including:Frame Structure : Uplink; Frequency and Band Table : EUTRA Band and Channel Bandwidth; Frequency and Band Table : EUTRA Band and Frequency Range;. It consists of a 10 ms radio frame divided into 20 slots, numbered 0 to 19, each with a duration of 0. Deciding on LTE vs 5G depends greatly on the use cases one expects from the network, as well as one’s budget and location. In LTE TDD, we defined 7 predefined pattern for UL and DL allocation in a radio frame. System Information. Data Rate: 326 Mbps/down 86 Mbps up (4x4 MIMO 20 MHz) 9. 104: “Evolved Universal Terrestrial. LAA . The duration of each subframe is 1 ms. The number of slots per subframe depends on subcarrier spacing. The slots are divided into symbols – each slot has either 6 or 7 symbols. Type 1, applicable to FDD- Here there are. 3. Figure 4shows the structure of a subframe. Each LTE frame has a duration of 10 ms, and is subdivided into 10 equal-size subframes of 1 ms; each subframe comprises two slot periods of 0. • A resource block (RB) spans 12. 5ms duration. OFDMA Downlink. 5ms [9]. The first three columns of SONET frame is referred as transport overhead. 1. 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 @. LTE network offers about 300Mbps data. The indices m0 and m1 are derived from cell ID group , which is defined as “Table 6. Wadia Institute of Himalayan Geology. One element that is shared by the LTE Downlink and Uplink is the generic frame structure. LTE RF/PHY RF Measurement. Telecom. One Frame consists of 10 subframes. 1. However, unlike LTE-U, LAA use a special physical layer frame structure called Frame Structure Type 3 which didn't exisit before. Calculation: 1 Subcarrier of PRACH preamble =1. 2. Slot duration=0. The frame structure below ( Figure 1) is applicable to TDD. Type 2: used for the LTE TDD systems. The tutorial on LTE also covers LTE protocol stack, LTE physical layer, LTE network architecture and so on. •LTE Channel Mapping •LTE Frame Structure •LTE Identities •LTE Power On Scenario •LTE Signals PSS & SSS •LTE System Information •LTE DL Channels: PBCH, PHICH, PCFICH •LTE DL Channels : PDCCH, PDSCH •LTE UL Channels: PUCCH, PUSCH •LTE RACH Procedure •LTE Layer 3-NAS and RRCPHICH (Physical Hybrid ARQ (Automatic Repeat reQuest) Indicator Channel) PDCCH (Physical Downlink Control Channel) Available for PDSCH (Physical Downlink Shared Channel) TDD guard period in special subframe. 55ns. 5 Paging over S1 15 6. 2. Type 1 uses Frequency Division Duplexing (uplink and downlink separated by frequency), and TDD uses Time Division Duplexing (uplink and downlink separated in time). 8 supports scalable RF channel bandwidths from 1. 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. 5G NG Frame Structure 5G NR is similar in many ways to 4G OTA. The data streams are terminated in Terminal Equipment (TE). It improves on those standards' capacity and speed by using a different radio interface and core network improvements. 3GPP defines two types of frames based. How many Sub-frame present in single Frame-Structure, and size of each Sub-Frame in Time-domain? Q03. A. 5ms each. OFDMA downlink, Single Carrier Frequency Division Multiple Access (SC-FDMA) uplink 11. The Fading parameters are available for Advanced LTE and Advanced LTE-A TDD carriers only. The evolved packet core communicates with packet data networks in the outside world such as the internet, private corporate networks or. 3) is used for Frequency Division Duplex (FDD) mode; however, the type 2 structure (Fig. But in new subframe, the reference signal is distributed across frequency domain only. Type 1: used for the LTE FDD mode systems. 2. For the FDD mode of operation, there are two carrier frequencies, one for uplink transmission (f UL) and one for downlink transmission (f DL). It only shows the structure of one frame in time domain. There are two types of frame structures in LTE; type 1 used for FDD and type 2 for TDD, as shown in the diagrams above. LTE. LTE Overview. LTE Radio Physical Layer Sadayuki Abeta NTT DOCOMO. Type 1 LTE Frame Structure. 5 ms duration. Type 1 is used as LTE FDD frame structure. Timing Advance in LTE . It introduces several changes in terms of frame structure and slot formats compared to previous generations like 4G LTE. The channels in LTE system are mainly categorized into logical, transport and physical channels based on their functions. Two duplex schemes FDD and TDD are supported. Type 1: FDD : Frequency Division Duplex. 300 Figure 4: Overall Architecture eNB = E-UTRAN Node B All radio interface-related functions MME = Mobile Management entity – Manages mobility, UE identity, and security parameters. Based on the review of latest 3GPP documents, this paper describes. Type 1: used for the LTE FDD mode systems. Read more >> Femtocell tutorial- This tutorial covers femtocell basics including network architecture. 5ms duration. ② SR（Scheduling Request）. This paper discusses the various options of DSS implementation, including deployment challenges, possible impacts to data rates, and areasIn LTE TDD, we defined 7 predefined pattern for UL and DL allocation in a radio frame. Just take a look at the overall uplink slot structure. g, LTE-U, LAA etc) refer to a technology in which LTE operates in 802. 4. Long Term Evolution (LTE) is the latest buzzword on everyone’s lips, but are you as conversant with the LTE architecture as you would like to be, or — more importantly —. We show that this fixed TTI duration is extremely inefficient whenLTE FRAME STRUCTURE Bikas Singh 5y 5G NR Terminologies – Subcarrier Spacing, Fram-Subframe, Slot and Symbol K. A resourceThis site is for everything on 4G/LTE. Hence each subframe has 2 slots. How about SSB? We can. Uplink physical channels and uplink physical signals are as follows. Type 1, applicable to FDD- Here there are. 1. They areThis site is for everything on 4G/LTE. Figure 10: Frame structure in LTE. 211). (You will understand this time interval if you look at the LTE Downlink frame structure explained at DL FrameStructure section) As I mentioned in previous section, three different sequences are used as the primary sync signal and there is a one-to-one mapping between each of the three sequences and the cell ID within the cell identity group. End-to-end simulation and conformance testing. Selection of a frame formatLTE: Key Features (Cont) 8. 4G, 4. 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. 0. Tables defining Uplink Frame Structure . , Frame Structure Type 3) was introduced to facilitate unlicensed spectrum operation consisting of 10 subframes of length 1 ms as illustrated in Fig. It enables very low latency, fast HARQ acknowledgments, dynamic TDD, coexistence with LTE and transmissions of variable length (for example, short duration for URLLC and long duration for enhanced MBB (eMBB)). • In downlink (DL) and uplink (UL), NB-IoT supports 15 KHz subcarrier spacing (SCS) frame structure. 27/06/2023 0. LTE will bring many. There. Frame Structure: MAC-LCID. As of now, around 16 carriers can be aggregation in. 5 ms. The type 1 structure (Fig. One slot is defined as 14 OFDM symbols, which corresponds to once a. To fulfill these requirements, orthogonal frequency division multiplex (OFDM) was selected as the basis for the PHY layer. Radio Frame Structure. 2 Initiation over S1 14 6. This will give a big boost as this is about 2. 211 frame structure type 2 (DL / UL / SSF) Correct choice of Configuration value is essential when setting the UL/DL ratio for CableFree LTE networks using TDD bands. Figure 1 shows frame structure type 1, which can be used in either full-duplex or half-duplex FDD mode. Resource Block of RACH in LTE Frame Structure : Preamble length is 6RB , 1 RB=180KHZ, so 6RB=1. 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. This generic frame structure is used with FDD. in 1 slot, the number of symbols are fixed that is 14-with normal cyclic prefix (CP) and 12-with extended CP. Type 2: used for the LTE TDD systems. Bandwidth vs RBs • LTE physical layer supports any bandwidthTime Domain transmission pattern of SS Block in NR is more complicated than LTE SS Block (Actually LTE has only one pattern of SSB Transmission in Time Domain as shown in LTE Frame Structure. RACH is responsible for the Random-Access process. frame, called resource elements (REs). TD-SCDMA frame structure is shown in figure 2, which depicts frame hierarchy. Portal Frames. LTE uses the concept of a resource block, which is a block of 12 subcarriers in one slot. Most of technical materials (or white papers) write several pages in words based on these. What is Cyclic Prefix (CP) in Frame-Structure? Q05. 211 for FDD LTE is as follows. Prasad. LTE standard has been published by 3GPP as an extension of UMTS (based on 3GPP standard) and 1xEV-DO (base on 3GPP2 standard) technologies. One is the type which is more like current LTE/LTE-Advanced and the other type is for new waveform. As shown one hyperframe cycle consists of 1024 hyperframes. Last but not least, we provide an overview. – Frame structure type 2 (FS2): TDD. One frame is divided into 10 subframes of 1ms each and each subframe is distributed into 2 slots of 0. LTE system basic parameters and LTE Frame structure: Frame Size=10ms No. 5 ms. Each subframe contains two time slots with. Moreover, if Carrier Aggregation is done with a couple of such carriers, it will provide a huge throughput gain. 5 ms. 2 LTE Frame Structure The frame structure is dependent on the duplex scheme applied in the spectrum. This allows LTE technology to fit within either existing or new carrier spectrum allocations. That is done by the following process. Outline . 𝜇Each subframe consists of 2 slots of 14 OFDM symbols each. The first choice has the advantage of compatibility with the LTE frame structure used by French networks and The second choice is not compatible with LTE. Hybrid ARQ Transmission Short Frame Sizes of 10ms and 1ms faster feedback and better efficiency at high speed. g. 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 Frame Structure Figure 1 describes the LTE frame structure for TDD mode [4]. LTE Frame Structure One element that is shared by the LTE Downlink and Uplink is the generic frame structure. 25 MHz to 20 MHz. 4G-LTE packet structure. Myung 17 Frame Structure • Two radio frame structures defined. Signal Studio for LTE/LTE-Advanced FDD currently supports only FDD and frame structure type 1. One sub frame is composed of 7 normal time slots used for downlink/uplink and 3 special time slots. 36. The frame structure for the type 2 frames used on LTE TDD is somewhat different. See full list on rfmw. Sub frame duration=1 ms. I am happy to share the top articles of ShareTechNote in 2022 for 5G NR, 4G LTE and Engineering Math. There can be a variable number of slots per subframe, with 14 OFDM symbols per slot. ‘Stand-alone operation’ utilizing for example the spectrum currently being used by GERAN systems as a replacement of one or more GSM carriers. 5 kHz UL shift . For example, the length of PRACH with preamble format 0 is (3186 + 24567) Samples. Network and Protocol Architecture. In TDD, one single frequency will be used at. Type-1 LTE Frequency Division Duplex (FDD) mode systems: Type-1 frame structure works on both half duplex and full duplex FDD modes. In TD-SCDMA a super-frame of 720 ms duration is made of 72 radio frames of 10 ms duration each. The LTE physical layer supports two types of frame structures as types 1 and 2. In LTE, DL and UL transmissions are organized into radio frames of 10 ms each. LAA stands for Licence Assisted Access. LTE FDD Radio Frame structure :-. There has been long long discussions on frame structure both in academia and in 3GPP and now we have pretty clear agreements on what a NR(5G) radio frame would look like. One resource block has duration of 7 OFDM symbols (0. 3 Mode of Operation : 1. 2 Zadoff−Chu (ZC) sequences 189 9. 5 kHz UL shift . This site is for everything on 4G/LTE. – Frame structure type 2 (FS2): TDD. We first introduce the LTE signal structure. The structure of the HDL LTE MIMO Transmitter subsystem is shown below. The duplex method and frame structure selected for the NR deployment will influence the integrity KPI performance values that can be achieved in the network. Two consecutive time slots will form one subframe. LTE Frame structure in muted MBSFN subframe based DSS. FDD and TDD mode can be combined (depends on UE capabilities) in the same physical layer. 1-1: Mapping between cell-identity group and the indices m0 and. Frame Structure of CPRI is illustrated below. The physical frame structure of LTE is a combination of time domain OFDM symbols and frequency domain subcarrier indices. A total of 504 unique physical layer cell identities are provided. 19/06/2016 0. 12 6. 5), there is a single carrier frequency and uplink and downlink transmissions are separated in the time domain on a cell basis. This is the first message from UE to eNB when you power it on. Myung 17 Frame Structure • Two radio frame structures defined. LTE frame structures used for TDD 36. July 2012. Each subframe has two slots. 5 ms each. Type 2: used for the LTE TDD systems. The frame can be dynamically configured to any one of the preset configurations shown, depending on the instantaneous data transmission requirement. This Sync detection is done every 5 ms. 101: “Evolved Universal Terrestrial Radio Access (E-UTRA); User Equipment (UE) radio transmission and reception” - 3GPP TS 36. Following equation is based on 36. 16e standards WiMAX MAC layer Frame Structure as per OFDM 802. Each radio frame of length Tf = 307200*Ts = 10 ms consists of two half-frames of length Tf = 153600*Ts = 5 ms each. Frame Structure • Two radio frame structures defined. Downlink Waveform = OFDMA (There is a subtle differences in waveform generation formula, but almost same) Followings are some of parameters that are different from legacy LTE. Figure 1 illustrates the structure of the LTE radio frame. No of Slots per Sub frame =2. Each frame is divided into 10 subframes of 1 millisecond, and the subframe is further divided into slots according to numerology. 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. • A resource block (RB) spans 12 subcarriers over a slot duration of 0. A typical LTE frame is 10 ms (milliseconds) long. Most of technical materials (or white papers) write several pages in words based on these. A non-exhaustive list of. A typical LTE frame is 10 ms (milliseconds) long. Each subframe composed of 2 time slots. The PDCCH is used for control information while the PDSCH carries the actual data. The 51-frame Control Channel Multiframe in GSM. The radio frame is represented in the LTE Toolbox™ product by the use of a succession of 10 cell-wide settings structures with the NSubframe field set from 0 through 9 in each case. 1 Downlink physical layer The LTE downlink PHY is specified for bandwidths from 1. link 2 link 3 lte part of the…The LTE TDD frame structure is Type 2. Let us understand LTE FDD and TDD LTE versions with figures and band example below. But in new subframe, the reference signal is distributed across frequency domain only. • A radio frame has duration of 10 ms. Frame Structure Downlink Uplink Reference Signal. 5G frame structures provide a fixed overall structure for defining data block transmission timing. Hybrid ARQ Transmission Short Frame Sizes of 10ms and 1ms faster feedback and better efficiency at high speed 13. Every slot contains either six. design, LTE frame structure dedicated some channels for data and they are called data channels while others for control information, known as control channels. CellAdvisor LTE frame analysis — unicast (PDSCH) and broadcast (MBMS) allocations Performance MBMS-SFN services are static and do not vary over time. This provides several benefits, including:“10ms” version, and gives greater opportunity for uplink/downlink flexibility. The downlink and uplink frame structure parameters are the same, except that the time-domain underlying symbols in the downlink are OFDM symbols, whereas in the uplink the underlying symbols are SC-FDMA symbols due to the use of different multiple access methods in. The figure depicts LTE-M frame structure similar to LTE technology. This example shows how to create a frame containing the cell-specific reference signals (CellRS) in each subframe. Hardware. The resulting location of the process is as shown in Reference Signal section of Downlink Frame Structurepage. Following equation is based on 36. As shown in Figure 1, LTE frame trans-The detailed radio frame structure for both frame structure types is shown in Figure 2. LTE Frame Structure 5. We will ignore the spatial domain for now and focus on the time-frequency plane. 5MHz (6 RBs in frequency per frame) to 20MHz (100 RBs in frequency per frame), being 10MHz the most commonly deployed. This paper proposes a dual-band transparent antenna using frame-structured metal mesh conductive film (MMCF). 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. 4G - LTE FRAME STRUCTURE |FRAME , SUBFRAME, SLOT, RE | MJTECHSTAR#MJTECHSTARIf the spatial domain is also considered the resource allocation structure actually becomes a 3-dimensional arrangment. Technical Overview of 3GPP LTE| Hyung G. Downlink ※ Reference - 3GPP TS 36. Each frame is divided into 10 subframes of 1 millisecond, and the subframe is further divided into slots according to numerology. The Evolved UMTS Terrestrial Radio Access Network (E-UTRAN). If you can interpret these tables into a correct graphical format, you already understand all the details of Uplink frame structure. Selection of SubCarrier Spacing (SCS) d. The components of the LTE network. But in NR, the number of slots varies according to the numerology. LTE Frame structure. · Each Radio frame consists two half frames. 25 MHz to 20 MHz. 5 ms. 7 Summary 184 References 186 9 Cell search and reference signals 187 9. There are six time units: frame, half-frame, subframe, slot. 4 MHz, 3 MHz, 5 MHz, 10 MHz, 15 MHz, and 20 MHz. 211 frame structure type 2 (DL / UL / SSF) Correct choice of Configuration value is essential when setting the UL/DL ratio for CableFree. The STS-1 frame of SDH is composed of section overhead, transport overhead, payload overhead and data part. 04/02/2023 10 Types of Frame Structure in LTE: • Types of Frame structure in LTE: 3GPP defines two types of frames based on the duplexing scheme used. LTE-A Frame Structure. For more information, see LTE Toolbox™. 8MHZ. LTE FRAME STRUCTURE. • The PSS is constructed from a frequency-domain ZC sequence of length 63. 104: Evolved Universal Terrestrial. LTE Frame Structure Made Simple. There are total 10 subframes in a frame. MasterInformationBlock ::= SEQUENCE { dl-Bandwidth ENUMERATED { n6, n15, n25, n50, n75, n100},Signal Studio for LTE/LTE-Advanced FDD currently supports only FDD and frame structure type 1. 8. crostrip line with a 0. 5 ms each). For the normal mode, the first symbol has a cyclic prefix of length TCP = 160 ⋅ Ts ≈ 5. Slideshow 2210075 by allieIn LTE physical layer, the LTE frame structure is of two types: 1. 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. Simplified LTE network elements and interfaces 3GPP TS 36. Hello Experts. 4 MHz, 3. LTE frame structure OFDM to address multi-path fading. 27/06/2023 0. Frame-Structure in LTE. The general idea is that the LTE subframe is made up of PDCCH and PDSCH as explained in my article LTE Frame Structure Made Simple. 211 V16. LTE Frame Structure A frame, which is a major component in LTE commu-nication, is a two-dimensional grid representing time and frequency. The Spc SF is placed between. One subcarrier has bandwidth of 15 kHz. LTE frame structure. 2. The following text shows the frame structure of each type. This article presents an overview of the LTE physical layer with a focus on essential aspects of the physical layer for FDD mode, which is the dominant mode of operation. This type of radio frame has duration of 10ms and consists of 20 slots, with each slot having equal duration of 0. 211). Modulation: OFDM with QPSK, 16 QAM, 64 QAM 10. 3) is used for Frequency Division Duplex (FDD) mode; however, the type 2 structure (Fig. Citation 2014). Contents. There are two types of frame structure in the LTE standard, Type 1 and Type 2. lets take few example to understand frame structure in more details . Frame Duration: The duration of an LTE frame is fixed at 10 milliseconds (ms). They are chosen to be the same as in LTE, thereby allowing for better LTE-NR co-existence. 3-1 LTE frame structure Figure 3 shows an LTE frequency division duplex (FDD) frame structure(1). Each radio frame consists of two identical 5 ms half-frames. The LTE specifications define both FDD and TDD modes of operation. No of Slots per Sub frame =2. 1. 212 5. As shown in Figure 1, the total length of downlink pilot time slot (DwPTS), GP, and uplink pilot time slot (UpPTS) fields is equal to. Subchannels separation is Δ f =15kHz. Determine frame synchronization and cell identification (cell search procedure) based. In the LTE standard (E-UTRA Citation 2019), OFDM signals are specified by three parameters, namely, the number of subcarriers or the Fast Fourier. 55ns. In section 5, Simulation results are given and we finally conclude in Section 6. The downlink and uplink frame structure parameters are the same, except that the time-domain underlying symbols in the downlink are OFDM symbols, whereas in the uplink the underlying symbols are SC-FDMA symbols due to the use of different multiple access methods in. 0 (2019-02): a. If you are interested in some historical aspects of the 5G Frame structure, it would be good to read through this. Refer to 36. DCI DCI . LTE frame structure type 2 (TDD) One radio frame Tf =10 ms 1 radio frame = 10 ms 1 slot = 0. Each sub-frame uses 7 OFDM symbols, each with a cyclic prefix. Design verification. 5 ms each. In recent time, much data is needed inLong Term Evolution (LTE) is the next step forward in cellular 3G services.