5G NBIOT LTE Question Answers
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Home LTE NB-IoT 5G(NR-NSA) Hi Guys today we are learning about 5G deployment options, if you want to know more about other 5G deployment option please click here Option 3: EN-DC (EUTRA-NR Dual Connectivity) Option 3 represents a network having both LTE and NR radio access, but using only the EPC core of LTE to route the Control signals. In this option, LTE is used as the control plane anchor for NR, and both LTE and NR are used for user data traffic.(user plane). It could also be called as Non-Standalone (NSA) NR in Evolved Packet System. The only difference between Options 3 and 3A is based on whether the user plane data is sent to NR directly or via the LTE RAN. This standardization was concluded in 3GPP Rel-15. This is a possible first step in the migration towards 5G-SA. This option wi... Read more
Home LTE NB-IoT 5G(NR-NSA) As per readers request this article is based on some 5G abbreviations (PCell,spCell,Scell,PSCell,MCG.SCG,Master-Node,Secondary-Node) for better understanding. What is Master Node? Master node: The node (radio access node) that provides the control plane connection to the core network in case of multi radio dual connectivity (MR-DC). For example, it can be master eNB in EN-DC, a Master ng-eNB in NGEN-DC What is Secondary Node? Secondary node: the radio access node, with no control plane connection to the core network, providing additional resources to the UE in case of MR-DC. For example, It may be an en-gNB in EN-DC or a Secondary ng-eNB (in NE-DC). What is MCG? MCG: Master Cell group It is a group of serving cells associated with the Maste... Read more
Home LTE NB-IoT 5G(NR-NSA) In this article, we will learn the basics of DC Carrier and why it is needed. Why in NR, DC subcarrier is not reserved like LTE? With legacy LTE (4G) it was decided that all devices (UE) should be capable of the maximum carrier bandwidth of 20MHz (UE can also support 10/15/5/3 MHz). This was a reasonable assumption at the time given the relatively modest bandwidth compared to NR, Whereas NR is designed to support very wide bandwidths up to 400MHz (for FR2) and 100Mhz (for FR1) for a single carrier. As well as NR supports multiple numerologies on the same transmitted carrier frequency. It is not necessary that all devices can support up to 400 MHz Bandwidth, hence in NR BWP concept is introduced. (To learn more about BWP Click here ). Note: in the above and below NR case figur... Read more
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5G
Basic Of 5G:- 5G Basic PART I
- 5G Basic PART II ( Key performance requirements)
- 5G Basic PART III(Use Cases of 5G)
- MCG,SCG,PCell.PSCell,spCell,SCell,CellGroupID,spCellConfig,ServCellIndex (Definitions)
- FR1 and FR2 band list (NRARFCN table)
- DC Carrier in NR
- DC Carrier in NR part 2 (interview QUS and ANS)
- 5G Deployment Option1
- 5G Deployment Option2
- 5G Deployment Option-3/3a/3x
- 5G Deployment Option-4/4a
- 5G Deployment Option-5
- 5G Deployment Option-6
- 5G Deployment Option-7/7a/7x
- 5G Deployment Option-8/8a
- 5G Deployment Scenarios
- Type of Dual Connectivity
- 5G Flexible Numerology
- Carrier Aggregation & Dual Connectivity
- Carrier Aggregation Part-1( interview questions and answers)
- Carrier Aggregation Part-2 (interview questions and answers)
- SRB BasicPart-1 (SRB0,SRB1,SRB2,SRB3 and interview Question)
- SRB BasicPart-2 (SRB0,SRB1,SRB2,SRB3 and interview Question)
- SRB BasicPart-3 (SRB0,SRB1,SRB2,SRB3 and interview Question)
- 5G CORESET Part-1
- Why PHICH and PCFICH channel is not present in NR (5G)?
- BWP Part-1
- BWP Part-2 BWP in SA and NSA
- Types of BWP in SA and NSA Case
- AI-5G Introduction Part-1
- AI-5G Introduction Part-2
- SSB Basic Part-1
- SSB Basic Part-2 (5g & 4g synchronization process, pci in 5g, basic of ssb)
- Reference Signal Part-1 (Basic of RS)
- Reference Signal Part-2 (DMRS, SRS,TRS)
- Reference Signal Part-3 (PTRS,CSI-RS)
- PRACH Part-1 (Basic, LTE interview QUS and ANS)
- PRACH Part-2 (Basic when does UE need to perform RACH in NR/LTE case)
- PRACH Part-3 (Preamble Formats)
- Beamforming Part-1 (Basic, beamforming interview QUS and ANS)
- Beamforming Part-2 (Beamforming benefits are obtained in practice with massive MIMO antennas)
- Beamforming Part-3 (Digital and Analogue domain Beamforming benefits)
- Cell Selection Part-1 (Basic, Cell selection interview QUS and ANS for SA and LTE)
- Cell Selection Part-2 (Cell selection criteria interview QUS and ANS for SA and LTE)
- HARQ Part-1 (Basic, HARQ, ARQ interview QUS and ANS for SA and LTE)
- DSS Part-1 (Basic of DSS)
- DSS Part-2 (DSS interview QUS and ANS for SA and LTE)
- DSS Part-3
Comments
Umang20 March 2019 at 05:22Nice briefing,
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Anupam22 March 2019 at 09:58Good one !
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Unknown19 January 2020 at 20:53Nicely explained
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Unknown30 January 2020 at 20:52You have any information of how AMF decode number of bits present in nrcellid which consists of variable gnb id and variable cell I'dThanks in advance
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Anonymous6 February 2020 at 21:45How is voice handled in 5G. Can you provide details on EPS fallback procedure and Voice over NR procedure.
ReplyDeleteRepliesBlacktechoguys21 February 2020 at 07:50
Sure, we will write article on EPS Fallback and IRAT Fallback........
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Gokulnath27 February 2020 at 21:24Waiting for detailed 5G registration process and call flow process
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Anonymous29 March 2023 at 00:45Good one !
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923875701021 June 2024 at 19:185G
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923875701021 June 2024 at 19:19vivo
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cell selection part-1
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Home LTE NB-IoT 5G(NR-NSA) Hi Guys today we are learning SIB1 in detail for LTE. SIB1 Why SIB1 is required for initial attach process? Once uplink synchronization between the UE and the network has been established and the UE has read the MIB, the UE waits for System Information Block Type 1 (SIB1) which carries cell access related information and supplies the UE with the scheduling of other system information blocks. Reading SIB1 is mandatory for the UE to gain access to the network as the UE cannot know about the sequences it has to transmit in PRACH or the transmit power at which eNodeB is transmitting or the subframe/UL-DL pattern in case of TDD without decoding the SIB. If the UE is unable to decode SIB it will simply abandon that network Using which channel to transmit SIB1? The channel mapping of SIB1 ... Read moreDC Carrier in NR
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Wikipedia
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