Now (as of Sep 2017) 3GPP official specification (38. 25KHZ, whereas UL Subcarrier=15KHz. End-to-end simulation and conformance testing. Some parameters do not apply to the Basic LTE PRACH and Basic LTE-A PRACH. In this tutorial, TDD frame structure below will be used, which is a DDDSU slot pattern with 2. frame structure All parts of the vehicle which contribute to the rigidity of the body, both for unibody designs and for vehicles with a separate chassis any structure that relies on a lattice of girders to stand up. Although a slot is a typical unit for transmission upon which scheduling operates, NR enables transmission to LTE-Advanced Physical Layer Overview. Learn the basics behind 5G NR waveforms, frame structure, and numerology. The duration of each subframe is 1 ms. · It consists in a category of Frame 2. 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. . Source publication. The LTE half-frames are further split into. How to deal with SSB ? In case of NR PDSCH transmission in DSS mode, most of the problems (especially problems of collision with LTE frame structure) were resolved by tweaking NR side (like punctuation/rate matching of NR data). One subcarrier has bandwidth of 15 kHz. Like LTE-U, this is a kind of technology to transmit LTE signal in unlicensed frequency range. However, in addition to the other modulation schemes used in 4G, radio conditions allowing, it can use 256-state quadrature amplitude modulation (256QAM). • LTE Rel. Type 1: used for the LTE FDD mode systems. 4G/LTE - Reference Signal. 4. THE Mobile Broadband Standard. In FDD, half of the subframes are reserved for uplink and half for downlink in both full-duplex and half-duplex. Each radio frame of length Tf = 307200*Ts = 10 ms consists of two half-frames of length Tf = 153600*Ts = 5 ms each. Each frame composed of 4 time slots. Figure 1 illustrates the structure of the LTE radio frame. Moreover, if Carrier Aggregation is done with a couple of such carriers, it will provide a huge throughput gain. The NR frame structure supports TDD and FDD transmissions and operation in both the licensed and the unlicensed spectrum. 7 μs. 5G, and 5G are covered in subsequent modules. But there's plenty of work to do before the technical. 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. 11 frequency region. 1. LTE FRAME STRUCTURE AND SIGNAL MODEL A. Basic time unit Ts for BW of 20MHz, (1/15000)*2048 seconds equal to 32. In 5G NR, there is the concept of flexible TDD uplink and downlink sub-frame allocation. The elementaryblock ofanLTE frameis a com-plex symbol, defined as a resource element (RE). Radio frames and subframes are of fixed lengths. Each 10 ms radio frame is divided into 10. 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. LTE Duplex Specific 17. RACH stands for R andom A ccess Ch annel. 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. 2. INHA UNIVERSITY. A large number of physical layer cell identities (IDs) simpli-fy the task of network planning. If you can interpret these tables into a correct graphical format, you already understand all the details of Uplink frame structure. 2 Initiation over S1 14 6. 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. 5ms. LTE frame structure 50 Resource Blocks 7 Symbols RB = 12 Sub-carriers x 7 Symbols 12 Subcarriers 0 49 (normal)Current radio frame structures in Long-Term Evolution (LTE) and New Radio (NR) have some restrictions. 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. 1 Protocol structure over S1 13 6. Read more >> Femtocell tutorial- This tutorial covers femtocell basics including network architecture. The fre-quency index of an RE maps to an LTE subcarrier, and its time index maps to an. The beauty of 4G LTE Frame structure (or shall i say the complexity of the same) is that everytime we dig a bit deeper into it we will learn something new about it, atleast that is the case with. ii) System Frame Number (SFN) iii) PHICH Configuration. LTE FRAME STRUCTURE. As shown one hyperframe cycle consists of 1024 hyperframes. No of Slots per Sub frame =2. Figure 10: Frame structure in LTE. LTE defines a generic frame structure that applies to both DL and UL for FDD operation. Portal frames look like a door. Following equation is based on 36. It compares both with respect to application,frame structure, Guard period,frequency band,interference,data rate and. As illustrated below, there can be two major types suggested. Frame Structure Downlink Uplink Reference Signal. Historically, CPRI is mainly designed for 2G/3G and eCPRI is designed for LTE and NR, but it is all up to network infra structure vendors which type of CPRI (CPRI or eCPRI) to use for which radio access technology (i. Type 1 uses Frequency Division Duplexing (uplink and downlink separated by frequency), and TDD uses Time Division Duplexing (uplink and downlink separated in time). LTE frame structure. 4MHZ. Check out the Episode 13 of Field Journal to get answers to questions like:LTE protocol structure Transport Channels The physical layer transport channels offer information transfer to MAC and higher layers. Transmit Diversity & Receive Diversity . The LTE Frame Structure | Radio Network Optimization courses helps to understand the fundamentals of Radio Frame of LTE. LTE-A Frame Structure. It consists of a 10 ms radio frame divided into 20 slots, numbered 0 to 19, each with a duration of 0. Channel Mapping. 33 4. In FDD there will be pair of frequencies assigned in the downlink and uplink directions and hence transmissions from multiple subscribes can happen at the same time but on different frequencies as mentioned. A new LTE frame type (i. Gabled Frames. 2. Channel Mapping. The skeleton is on example of a frame structure. LTE is one standard developed by organizations from all over the world. In the LTE standard (E-UTRA Citation 2019), OFDM signals are specified by three parameters, namely, the number of subcarriers or the Fast Fourier. Type 2: Used in LTE TDD. dl-UL-TransmissionPeriodicity: Periodicity of the DL-UL pattern. g, LTE-U, LAA etc) refer to a technology in which LTE operates in 802. Portal Frames. How many Time-Slot are present in Sub-Frame? Q04. The frame can be dynamically configured to any one of the preset configurations shown, depending on the instantaneous data transmission requirement. The LTE frame structure for the FDD and TDD schemes was discussed in Chapter 9. I would just put down a high level descriptions of the difference here. ‘Guard band operation’ utilizing the unused resource blocks within a LTE carrier’s guard-band. The length of one frame is 10 ms, which comprises 10 subframes. See full list on rfmw. Modulation: OFDM with QPSK, 16 QAM, 64 QAM 10. For LTE TDD only, SRSs can be transmitted in an ordinary sub-frame or in UpPTS sub-frame to improve spectral efficiency. 5 ms. The LTE packet frame structure is similar to other OSI models. 16e standards WiMAX MAC layer Frame Structure as per OFDM 802. 6 Uplink hopping 182 8. Keywords: 3GPP, LTE, LTE-A, LTE system toolbox, Physical frame structure I. LTE Overview. Moreover, each subframe is further divided into two equally sized time slots, that is, each slot is 0. Myung 17 Frame Structure • Two radio frame structures defined. The cyclic shifts are generated based on cell-identity group number, which. 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. Some parameters do not apply to the Basic LTE PRACH and Basic LTE-A PRACH. < SIB 2 and 36. For FDD, whether downlink and uplink In this chapter, we introduce the OFDM‐based LTE signal and frame structure to explain how the user‐plane and control‐plane data from the higher layers, such as the Radio Link Control (RLC) layer and Media Access Control (MAC) layer are multiplexed with physical layer control and Reference Signals (RSs) for data transmission. Total Frame duration is about 10ms. Standards for the first and second phases of 5G are moving towards completion, and early deployments can piggy-back on 4G LTE infrastructure. 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. 5 ms each). Each LTE frame has 10 sub-frames (1 ms each) while each sub. One GSM hyperframe composed of 2048 superframes. There can be a variable number of slots per subframe, with 14 OFDM symbols per slot. 4G/LTE - PHY Channel PSS (Primary Synchronization Channel) PSS is a specific physical layer signal that is used for radio frame synchronization. This Sync detection is done every 5 ms. 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. End-to-end simulation and conformance testing. Each hyperframe consists of 1024 frames. The 51-frame Control Channel Multiframe in GSM. This Video Explains the LTE technology basics, OFDMA and LTE Frame Structures and types. But anyway good thing to me was that the most important factors in uplink slot is same as the one in the downlink. Performance analysis of OFDMA in LTE. Frame structure 5G. Each LTE frame has 10 sub-frames (1 ms each) while each sub-frame is further divided into 2 slots (0. 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. In LTE base station is referred as eNodeB and mobile subscriber is referred as UE. We discuss LTE basics including the LTE frame structure, OFDMA, Resource elements, Resource blocks and Scheduler Resource blocks. The LTE standard uses Orthogonal Frequency Division Multiplexing (OFDM) modulation to achieve robust transmission in multipath scenarios (Liu et al. A resourceThis site is for everything on 4G/LTE. The PDCCH is used for control information while the PDSCH carries the actual data. 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. 211 4 Frame structure). There are two types of LTE frame structure: Type 1: used for the LTE FDD mode systems. LTE employs a time division duplex (TDD) or frequency division duplex (FDD) mode, each with a specific frame structure. This is because neighboring cells are generally required to use different cell IDs. 211 V16. 25KHZ, whereas UL Subcarrier=15KHz. 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. Tables defining Uplink Frame Structure . 8MHZ. Each radio frame of length Tf = 307200*Ts = 10 ms consists of two half-frames of length Tf = 153600*Ts = 5 ms each. Hence there are total 20 slots in a radio frame. LTE Frame structure. In TDD mode, the SF is either of type DL, UL or special (Spc). Figure 1 : Downlink Physical Channel Structure. The LTE frame structure for the FDD and TDD schemes was discussed in Chapter 9. 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. The PRACH transmission is based on the access frame structure. 1), where the downlink and uplink transmissions are per-formed in different carrier frequencies. Uplink physical channels and uplink physical signals are as follows. 2. But in NR, the number of slots varies according to the numerology. Scheduling of UL resources is necessary depending on the amount of data to be transmitted by UL. The downlink subframe structure in LTE-M only uses a part of the downlink subframe REs in LTE. The uplink and downlink bands are separated in the frequency domain using a guard band. Alternative frame structures are defined for use with TDD. The STS-1 frame of SDH is composed of section overhead, transport overhead, payload overhead and data part. In LTE-Like structure, the reference signal is distribute over both time and frequency domain. Answer-1:The difference lies in the LTE frame structure in both the FDD and TDD versions of the LTE. LTE system basic parameters and LTE Frame structure: Frame Size=10ms. NR uses flexible subcarrier spacing derived from basic 15 KHz subcarrier spacing used in LTE. SAE’s main component is the Evolved Packet Core, also known as an EPC. Sub frame duration=1 ms. Base stations need to. It has explained following topics in the same order as given below:1. During each frame, there are ten uplink subframes and ten downlink subframes, and uplink and downlink transmissions can occur simultaneously. Switching Points . 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. LTE Frame Structure and Resource Block Architecture . 4G-LTE packet structure. Figure 4. Type 2: used for the LTE TDD systems. The minimum unit being frame (or TDMA frame) is made of 8 time slots. 2. Evolved Packet Core (EPC) 4. There are total 10 subframes in a frame. Figure 10: Frame structure in LTE. 5% LTE TDD Only 7. LTE TDD frame 36. In 5G/NR, we don't have any predefined pattern. 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. This video then walks you through the concept of carriers and bandwidth parts, and. (Basic LTE-A) Simultaneous PUCCH and PUSCH (Advanced LTE) Scalable bandwidth: 1. The structure of each DCI format is defined in 36. In this page, I will describe on NR Frame Structure that is specified in 3GPP specification (38. Uplink 3. The Fig 1: Shows the position of RACH in the Uplink LTE channel Structure. If you can interpret these tables into a correct graphical format, you already understand all the details of Uplink frame structure. This site is for everything on 4G/LTE. 19/06/2016 0. 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. dl-UL-TransmissionPeriodicity. Since the modulation format is OFDM (regular OFDM for the downlink, and DFT- precoded OFDM in the uplink. CHANNEL BANDWITH vs BANDS . 5 Paging over S1 15 6. Contents. LTE RF/PHY RF Measurement. The LTE frameFrame Structure : Uplink; Frequency and Band Table : EUTRA Band and Channel Bandwidth; Frequency and Band Table : EUTRA Band and Frequency Range;. Each subframe contains two time slots with. 25 to 52. In 5G/NR, we don't have any predefined pattern. com LTE Frame structure. Demodulating an LTE Signal in MATLAB with LTE System Toolbox. e. Frame Structure Understanding the 5G NR Physical Layer Waveform, Numerology and Frame Structure 21 – Frame: 10 ms – Subframe: Reference period of 1 ms – Slot (slot based scheduling) • 14 OFDM symbols • One possible scheduling unit - Slot aggregation allowed • Slot length scales with the subcarrier spacing 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. It facilitate mixed numerologies including low latency operations. 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. 16d standard Zigbee RF4CE Frame Structure Zigbee physical layer Frame Structure Zigbee MAC. This site is for everything on 4G/LTE. However, regardless of numerology the length of one radio frame and the length of one subfame is same. 2. To address these challenges, we propose a novel frame structure design that incorporates several key changes relative to current LTE systems: Flexible TTI duration: The current LTE system uses a fixed transmission time interval (TTI) of one subframe (1 ms). The 51-frame structure used for control channels is considerably more complex than the 26-frame structure used for the traffic channels. 12. OFDMA Downlink. Overview Network architecture Protocol stack Resource element Frame structure TDD frame configuration TDD special subframe MIMO Random access procedure. Variable number of OFDM symbols per subframe (different from LTE) frame: 10 ms. 104: “Evolved Universal Terrestrial. Bandwidth will be scalable from 1. Ts is the basic time unit in LTE. 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. User Equipment (UE) The internal architecture of the user equipment for LTE is exactly the same as that of UMTS and GSM, which is mobile equipment (ME). e, 2G/3G, LTE, NR). Increasing frame configuration; Configuration: 3GPP release: Downlink to uplink switch point periodicity (ms). LTE OFDMA frame structure. Network Components for MBSFN(eMBMS) For implementing eMBMS, a couple of components are added in the core network side as shown below. Each frame is composed of 10 subframes of 1 msec duration. Each radio frame will have a total of ten subframes, each with two time slots. 0. • A resource block (RB) spans 12 subcarriers over a slot duration of 0. The Fading parameters are available for Advanced LTE and Advanced LTE-A TDD carriers only. Selection of SubCarrier Spacing (SCS) d. The type 1 structure ( Fig. Answer-1:The difference lies in the LTE frame structure in both the FDD and TDD versions of the LTE. 25-20 MHz). 1. 11 devices. A slot consists of 7 ofdm symbols (if normal cyclic prefix is used) separated by. Each SI is composed of multiple SIBs. The structure of the HDL LTE MIMO Transmitter subsystem is shown below. In recent time, much data is needed inFrame structure with Numerologies. 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. lets take few example to understand frame structure in more details . FDD is operated in the paired spectrum (see Sect. There are two radio frames, each one of 10 ms duration. Type 1 is used as LTE FDD frame structure. Spectrum utilization efficiency of LTE and NR bands with and without cross-band DSS. Each frame is divided into 10 subframes of 1 millisecond, and the subframe is further divided into slots according to numerology. LTE defines a basic unit of time: In the time domain, both uplink and downlink are organized. The slots are divided into symbols – each slot has either 6 or 7 symbols. One frame is divided into 10 subframes of 1ms each and each subframe is distributed into 2 slots of 0. There are two types of frames in LTE;FDD and TDD. design, LTE frame structure dedicated some channels for data and they are called data channels while others for control information, known as control channels. Type 2: Used in LTE TDD. A typical LTE frame is 10 ms (milliseconds) long. LTE. 0056532 Tzu-chin Liu 15 th March 2012. LTE TDD Overview. LTE uses the concept of a resource block, which is a block of 12 subcarriers in one slot. 2. 5 ms. Each subframe consists of two slots. that are configurable. As mentioned in Overview page, one of the critical differences in terms of waveform design between 5G Pretrial and current LTE is that in 5G Pre Trial the subcarrier spacing is 75 Khz as opposed to 15 Khz in current LTE. LTE frame structure type 2 (TDD) One radio frame Tf =10 ms 1 radio frame = 10 ms 1 slot = 0. Like LTE-U, this is a kind of technology to transmit LTE signal in unlicensed frequency range. Each radio frame is 10 ms long and consists of 10 subframes. 18th frame) is used as control frame. A new LTE frame type (i. k) that the frame structures given in Annex 1, Frame A and Frame B can be implemented for NR(New Radio) systems; l) that the Frame B2 given in Annex 1 is compatible with the LTE-TDD frame structure configuration n o. The period of one LTE radio frame structure is 10ms. 3. Figure 1 shows frame structure type 1, which can be used in either full-duplex or half-duplex FDD mode. Yang Chamsol. Each half-frame consists of eight 0. 211 V16. The OFDMA system model is shown in Figure 1. It consists of 20 equal-sized time slots. 5G NR: Numerologies and Frame structure Supported Transmission Numerologies - A numerology is defined by sub-carrier spacing and Cyclic-Prefix overhead. , Frame Structure Type 3) was introduced to facilitate unlicensed spectrum operation consisting of 10 subframes of length 1 ms as illustrated in Fig. The type 1 FDD-based radio frame structure is shown in Figure 2. Resource Allocation Note: This is the 2nd lecture in a series of lectures on 1G to 5G. The frame-structured metal mesh conductive film can resist considerable. In LTE, DL and UL transmissions are organized into radio frames of 10 ms each. - available for PMCH (Physical Multicast Channel) LTE Resource Grid. Last but not least, we provide an overview. OFDMA and Downlink Frame Structure Details. As shown in Figure 1, LTE frame trans-The detailed radio frame structure for both frame structure types is shown in Figure 2. You would see that the length of PRACH preamble varies depending on the preamble format. The number of symbols per. Technical Overview of 3GPP LTE| Hyung G. 1 DCI formats but many of the fields in a DCI are defined. V. Slot duration=0. A typical LTE frame is 10 ms (milliseconds) long. 4G/LTE Quick Reference Quick Picture Basic Procedure Troubleshoot Tips. Total Frame duration is about 10ms. This new frame structure is designed to make LTE signal similar to WLAN burst. 0 (2019-02): a. LTE-A Frame Structure. 10 Variable Subcarrier Spacing Slot configuration 0 Subcarrier spacing (kHz) 15 30 60 120 240 Symbol duration (no CP) (μs) 66. The useful symbol time is Tu = 2048 ⋅ Ts ≈ 66. Type 2 LTE Frame Structure. Embodiments of the flexible frame structure include different parameters that are flexible, i. FDD is operated in the paired spectrum (see Sect. System Requirement. 2. Because of variable subcarrier spacing, the. Prasad. Download scientific diagram | LTE Downlink eMBMS subframe structure: eMBMS subframes (1, 2, 3, 6, 7, 8) and non-eMBMS subframes (0, 4, 5, 9) in an LTE Frame, where. The 10 ms frame comprises two half frames, each 5 ms long. Moreover, each. Now (as of Sep 2017) 3GPP official specification (38. This is the same as in LTE, facilitating NR and LTE coexistence. There are two types of frames in LTE;FDD and TDD. 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. Download scientific diagram | shows the frame structure of LTE V2X. 2) Frame Structure The 5G frame structure is conceptually like LTE, but it is more flexible to accommodate the different requirements for high-speed and low-latency operation. 211) defines the Frame Structure. Frame Structure 10ms frames 10. Figure 2: LTE frame structure type 1 [2] LTE frame. As of now, around 16 carriers can be aggregation in. Subframes #0 and #5 are always assigned to DL, and subframe #2 is always assigned to UL. The LTE frame structure for the FDD and TDD schemes was discussed in Chapter 9. Type 1, applicable to FDD- Here there are. Frame Structure: MAC-LCID. 0%Abstract: In this chapter, we introduce the OFDM‐based LTE signal and frame structure to explain how the user‐plane and control‐plane data from the higher layers, such as the. The Long Term Evolution (LTE, 4G ) standard defined by the 3GPP supports both FDD and TDD Duplex mode. Subchannels separation is Δ f =15kHz. In LTE the physical layer is driven by OFDMA in the downlink and SC-FDMA in the uplink. It describes NB-IoT Frame Structure with 15 KHz Subcarrier spacing and 3. Now consider the details of a symbol. Each radio frame of length Tf = 307200*Ts = 10 ms consists of two half-frames of length Tf = 153600*Ts = 5 ms each. OFDMA downlink, Single Carrier Frequency Division Multiple Access (SC-FDMA) uplink 11. We show that this fixed TTI duration is extremely inefficient whenThe radio frame is a key structure defining transmission time slots. LTE provides huge flexibility when it comes to allocation of downlink and uplink resources on the air interface. 4Time Division Duplex (TDD) In TDD, isolated cell clusters at higher frequencies can be used, where path loss reduces inter-cell interference. 12. The SR is utilized to request the UL-SCH resources to establish a data transmission. That is done by the following process. The uplink and downlink bands are separated in the frequency domain using a guard band. 4. 3) is used for Frequency Division Duplex (FDD) mode; however, the type 2 structure (Fig. In the time domain the LTE transmissions are organized into frames of 10 msec length. As shown in Fig. Slot Structure. . The REs are. Slot duration=0. One resource block is 0. 101: “Evolved Universal Terrestrial. We. 1 Downlink physical layer The LTE downlink PHY is specified for bandwidths from 1. Source: 3GPP TS 36. 1 PN sequence 187 9. For example, the public network has more downlinks, and the private network or private network has more uplinks. The Input Sampler samples the inputs NDLRB and NCellID and then propagates the values to the subsequent blocks. Refer 5G NR Frame structure >> and LTE frame structure >> for more information. 2 Frame Structure and Physical Resources 11 4. 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. Special Subframes Radio Frame Length = 10 ms. Transmit Diversity & Receive. LTE supports two radio frame structures [15]: 1. · Time slot size= 0. Frame Structure - Candidates before 3GPP . System Information. 6 GHz). There are two types of LTE frame structure: 1.