- Once you're done, your LTE connection should be back to normal. Check if you're using the correct SIM slot Certain dual-SIM phones only support LTE in one of the two available SIM slots.
- LTE Routers are used to minimize the cost of downtime, reduce service calls, and bring distributed sites online faster. Whether enabling secure financial transactions, or routing data in rugged outdoor environments for mass transit and industrial applications, LTE Routers and Gateways accelerate deployment of high performance cellular networking with secure connectivity, location-based.
Insert the SIM card into the SIM slot of your Dell device. If the SIM card is preinstalled via factory, please skip this step. Find the website of the SIM card's corresponding carrier. 700-2700MHz WiFi 4G LTE 8dBi Directional MIMO Antenna (± 45°) RJ45 Connector. Rated 4 out of 5. By Jesse Hileman. 1.PCI-E slot: 1.SIM card slot: 1.USB 2.0 port. LTE Cat M1 (also named LTE CAT-M, or LTE-MTC) is a new low-power wide area (LPWA) cellular technology, specifically designed for the Internet of Things (IoT) and machine-to-machine (M2M) communications. LTE Cat-M uses significantly less bandwidth, requiring total 1.4MHz bandwidth, and supports.
4G LTE includes:
What is LTELTE OFDMA / SCFDMAMIMOLTE DuplexLTE frame & subframeLTE data channelsLTE frequency bandsLTE EARFCNUE categories / classesLTE-M (Machine to Machine)LTE-LAA / LTE-UVoLTESRVCC
LTE Advanced topics:LTE Advanced introductionCarrier aggregationCoordinated multipointLTE relayDevice to device, D2D
Like previous cellular systems, and virtually all data communications systems, LTE data is carried in frames and subframes.
Using frames and subframes enables the data to be synchronised enabling the radio network to be able to handle the data correctly.
The frames and subframes used different between the FDD and TDD versions of LTE because there are different requirements for segregating data on the two schemes.
The two types of LTE frame structure are:
- Type 1: used for the LTE FDD mode systems.
- Type 2: used for the LTE TDD systems.
Type 1 LTE Frame Structure
Texas holdem poker oyna online. The basic type 1 LTE frame has an overall length of 10 ms. This is then divided into a total of 20 individual slots. LTE Subframes then consist of two slots - in other words there are ten LTE subframes within a frame.
Type 2 LTE Frame Structure
The frame structure for the type 2 frames used on LTE TDD is somewhat different. The 10 ms frame comprises two half frames, each 5 ms long. The LTE half-frames are further split into five subframes, each 1ms long.
The subframes may be divided into standard subframes of special subframes. The special subframes consist of three fields;
- DwPTS - Downlink Pilot Time Slot
- GP - Guard Period
- UpPTS - Uplink Pilot Time Stot.
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These three fields are also used within TD-SCDMA and they have been carried over into LTE TDD (TD-LTE) and thereby help the upgrade path. The fields are individually configurable in terms of length, although the total length of all three together must be 1ms.
LTE TDD / TD-LTE subframe allocations
4G LTE includes:
What is LTELTE OFDMA / SCFDMAMIMOLTE DuplexLTE frame & subframeLTE data channelsLTE frequency bandsLTE EARFCNUE categories / classesLTE-M (Machine to Machine)LTE-LAA / LTE-UVoLTESRVCC
LTE Advanced topics:LTE Advanced introductionCarrier aggregationCoordinated multipointLTE relayDevice to device, D2D
Like previous cellular systems, and virtually all data communications systems, LTE data is carried in frames and subframes.
Using frames and subframes enables the data to be synchronised enabling the radio network to be able to handle the data correctly.
The frames and subframes used different between the FDD and TDD versions of LTE because there are different requirements for segregating data on the two schemes.
The two types of LTE frame structure are:
- Type 1: used for the LTE FDD mode systems.
- Type 2: used for the LTE TDD systems.
Type 1 LTE Frame Structure
Texas holdem poker oyna online. The basic type 1 LTE frame has an overall length of 10 ms. This is then divided into a total of 20 individual slots. LTE Subframes then consist of two slots - in other words there are ten LTE subframes within a frame.
Type 2 LTE Frame Structure
The frame structure for the type 2 frames used on LTE TDD is somewhat different. The 10 ms frame comprises two half frames, each 5 ms long. The LTE half-frames are further split into five subframes, each 1ms long.
The subframes may be divided into standard subframes of special subframes. The special subframes consist of three fields;
- DwPTS - Downlink Pilot Time Slot
- GP - Guard Period
- UpPTS - Uplink Pilot Time Stot.
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These three fields are also used within TD-SCDMA and they have been carried over into LTE TDD (TD-LTE) and thereby help the upgrade path. The fields are individually configurable in terms of length, although the total length of all three together must be 1ms.
LTE TDD / TD-LTE subframe allocations
One of the advantages of using LTE TDD is that it is possible to dynamically change the up and downlink balance and characteristics to meet the load conditions. In order that this can be achieved in an ordered fashion, a number of standard configurations have been set within the LTE standards.
A total of seven up / downlink configurations have been set, and these use either 5 ms or 10 ms switch periodicities. In the case of the 5ms switch point periodicity, a special subframe exists in both half frames. In the case of the 10 ms periodicity, the special subframe exists in the first half frame only. It can be seen from the table below that the subframes 0 and 5 as well as DwPTS are always reserved for the downlink. It can also be seen that UpPTS and the subframe immediately following the special subframe are always reserved for the uplink transmission.
| Uplink / Downlink subframe configurations for LTE TDD (TD-LTE) | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Uplink-downlink configuration | Downlink to uplink switch periodicity | Subframe number | |||||||||
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | ||
| 0 | 5 ms | D | S | U | U | U | D | S | U | U | U |
| 1 | 5 ms | D | S | U | U | D | D | S | U | U | D |
| 2 | 5 ms | D | S | U | D | D | D | S | U | D | D |
| 3 | 10 ms | D | S | U | U | U | D | D | D | D | D |
| 4 | 10 ms | D | S | U | U | D | D | D | D | D | D |
| 5 | 10 ms | D | S | U | D | D | D | D | D | D | D |
| 6 | 5 ms | D | S | U | U | U | D | S | U | U | D |
Where:
D is a subframe for downlink transmission
S is a 'special' subframe used for a guard time
U is a subframe for uplink transmission
The frame and subframe structure used within LTE provides the data synchronisation and organisation required to enable it to be transferred in a logical and ordered fashion.
Wireless & Wired Connectivity Topics:
Mobile Communications basics2G GSM3G UMTS4G LTE5GWiFiIEEE 802.15.4DECT cordless phonesNFC- Near Field CommunicationNetworking fundamentalsWhat is the CloudEthernetSerial dataUSBSigFoxLoRaVoIPSDNNFVSD-WAN
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LTE frame structure | TDD and FDD frame structure of LTE
This page covers LTE Frame structure including subframe and slot structure.It describes LTE TDD frame structure and LTE FDD frame structure as per 3GPP standard.
Introduction:
There are two topologies used in LTE system viz. TDD and FDD.TDD stands for Time Division Duplex where as FDD stands for Frequency Division Duplex.In TDD system, same carrier frequency is used in both transmit and receive path at different time instants say 't1' and 't2'.In FDD system, different carrier frequencies such as 'Fc1' and 'Fc2' are used by transmit and receive paths at same time instant say 't1'.
LTE FDD and LTE TDD
As shown in the figure, for LTE FDD mode, 'f1' and 'f2' are one pair of carrier frequencies allocated separately for both the uplink and downlink directions.The downlink refers to transmission from LTE eNodeB to UEs and uplink refers to transmission from UEs to eNodeB.
As shown in the figure, for LTE TDD mode, same carrier frequency 'f1' is allocated in both the uplinkand downlink directions. This frequency is used by both uplink and downlink at different time slots for mapping theirinformation data. Refer FDD vs TDD LTE >> which describes LTE FDD and LTE TDD modeswith examples.
LTE Frame structure
As mentioned as per topologies, TDD and FDD there are two frame structures viz. type-1 and type-2 LTE frame structure.Total Frame duration is about 10ms. There are total 10 subframes in a frame.Each subframe composed of 2 time slots.
Type 1 is used as LTE FDD frame structure.As shown in the figure below, an LTE TDD frame is made of total 20 slots, each of 0.5ms.Two consecutive time slots will form one subframe. 10 such subframes form one radio frame.One subframe duration is about 1 ms. Hence LTE radio frame will have duration of about 10ms.Each radio frame will have 307200 Ts. Where in one Ts equals 1/(15000 x 2048) seconds.
Type 2 is used as LTE TDD frame structure.As shown in the figure, here radio frame composed of two half frames, each of 5ms duration resulting intotal frame duration of about 10ms.Each radio frame will have total 10 subframes,each subframe will have 2 time slots.subframe configuration is based on Uplink downlink configuration(0 to 6).Usually in all the cases, subframe #0 and subframe#5 is always used by downlink.The Special subframe carry DwPTS(Downlink Pilot Time Slot),GP(Guard Period) and UpPTS(Uplink Pilot Time Slot).For the 5ms DL to UL switch point periodicity case, SS(Special subframe ) exists in both the half frames.For the 10ms DL to UL switch point periodicity case, SS exists only in first half frame.
The table mentions DL and UL configuration which determines the contents of the subframes in LTE frame structure.In the table, 'U' stands for Uplink, 'D' stands for Downlink and 'S' stands for special subframe.
This LTE tutorial on LTE basics covers following sub topics:
Main pagefeaturesterminologiesFrameTDD FDDChannel typesPHYstackthroughputVoLTECAcell searchnetwork entryTimersPSS vs SSSSecurityLTE BandsEARFCNHotspotrouter
Frame structure of wireless standards, technologies
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Frame structure of various wireless standards/technologies are mentioned below.It include WiMAX, WLAN, Zigbee, GSM, GPRS, UMTS, LTE, TD-SCDMA, GPS, SDH, 11ac WLAN, AMPS, Ethernet, VLAN etc.
WiMAX physical layer Frame Structure as per 802.16d and 802.16e standards
WiMAX MAC layer Frame Structure as per OFDM 802.16d standard
Zigbee RF4CE Frame Structure
Zigbee physical layer Frame Structure
Zigbee MAC layer Frame Structure
GPRS Frame Structure
GPS Frame Structure
LTE Frame Structure
TD-SCDMA Frame Structure
UMTS Frame Structure
SONET Frame Structure
SDH Frame Structure
802.11ac PHY Frame Structure
802.11ac MAC layer Frame Structure
WLAN Frame Structure as per 802.11a,11b,11n,11ac standards
AMPS Frame Structure
Ethernet Frame Structure
VLAN Frame Structure
GSM Frame Structure
Cellular Telecommunications Tutorials -
RF Wireless World
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