Books Summary by Bibliophile Parul

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Please click on the below Link for Motivational Books Summary by Bibliophile Parul





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5G Deployment Option-3/3a/3x

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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...
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cell selection part-2

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Home                 LTE                NB-IoT               5G(NR-NSA) In this section, we will learn about cell selection criteria for SA and LTE. How is cell selection criteria defined? The cell selection criterion which is abbreviated as S in normal coverage is fulfilled when: Srxlev > 0 AND Squal > 0 Where: Srxlev = Qrxlevmeas – (Qrxlevmin + Qrxlevminoffset) – Pcompensation - Qoffsettemp Squal = Qqualmeas – (Qqualmin + Qqualminoffset) - Qoffsettemp Where: Srxlev Cell selection RX level value (dB) Squal Cell selection quality value (dB) Qoffsettemp Offset temporarily applied to a cell (dB) Qrxlevmeas Measured cell RX level value (RSRP) Qqualmeas Measured cell quality value (RSRQ) Qrxlevmin Minimum required RX level in the cell (dBm). If the UE supports SUL...
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DSS Part-1

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Home                 LTE                NB-IoT               5G(NR-NSA) In this article, we will discuss about Dynamic spectrum sharing abbreviated as DSS What is spectrum refarming? It is the process of redeploying spectrum from available users and re-allocating it to others. Legacy technology must be eliminated from a part of the spectrum, which must then be allocated for the new technology. It was not possible for operators to share the spectrum between different technologies but, spectrum refarming from LTE to 5G will be simpler with Dynamic Spectrum Sharing (DSS) which is introduced in 3GPP r15.  5G and LTE can occupy the same spectrum band from the control channel point of view, and the resources are allocated dynamically between the two technologies depending on the instantaneous device distribution and capacity needs. As many LTE bands ...
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5G Deployment Option-7/7a/7x

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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 7: Deployment Option 7 represents a deployment scenario in which the Next Generation Core (NGC) will be used with a mixture of LTE and NR radio.  Next Generation signaling will be used but it will be routed via the LTE RAN because the LTE network is more fully built out and thus more reliable for handling signaling.  Options 7 and 7a differ on whether the user plane data is sent to NR directly or via the LTE RAN. 7/7A/7X require an eLTE upgrade of the existing LTE network at the start. (Difference is UP path Non Standalone ( Dual Connectivity 4G/5G ) Option 7/7A: NSA NR in 5GS. This option is particularly a...
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Reference signals Part-3

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Home                 LTE                NB-IoT               5G(NR-NSA) In the previous section, we learn about the DMRS, TRS, SRS reference signals. in this section, we will learn the remaining reference signals:- PTRS: What is PTRS? Now next is PTRS, this reference signal is introduced in NR to enable compensation of oscillator phase noise. Usually, phase noise increases as a function of the oscillator carrier frequency. Thus PTRS can be utilized at high carrier frequencies such as mm wave to reduce phase noise. In an OFDM signal, one of the main degradations caused by phase noise is an identical phase rotation of all the subcarriers, called as common phase error or CPE. it is designed so as to have high density in the time domain   and   low density in the frequency domain, as the phase rotation produced by common phase error is id...
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cell selection part-1

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Home                 LTE                NB-IoT               5G(NR-NSA) In this section, we will learn about cell selection basics for SA and LTE. What is cell selection? If a device is under circumstances where UE needs to be switched on or after UE has left RRC connected mode or UE returns to a coverage area, it sees many base stations around it. Many a times UE might be surrounded by multiple base stations from different operators. So from this many base stations, UE can register to only one cell. So to register to a specific cell UE goes through a dedicated process. This specific decision making process where UE decides to which cell to camp on is known as cell selection. Is the initial cell selection procedure reacquired in the case of NSA ? When UE is connected to MCG that time only cell selection procedure is reacquired. Note: ENDC cel...
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