5G NBIOT LTE Question Answers

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 4: NR-EUTRA Dual Connectivity(NE-DC) Option 4 represents a network using the Next Generation Core (NGC).  Control signaling will be routed through the NR RAN. The only difference between Options 4 and 4a is based on whether the user plane data is sent to LTE directly or via the NR RAN. (Difference is UP path Non Standalone (Dual Connectivity 4G/5G)). The pre-requisite conditions for Options 4/4A are eLTE(Release 15) upgrade at the start and a robust 5G coverage. In Option 4/4a, there can be a Dual Connectivity between the gNB (similar role as MeNB in TS 36.300) and the NGC with Non-standalone E-UTRA (similar role as SeNB in TS 36.300). The E-UTRA user plane connection to the NGC can go either via the gNB i.e. Option 4 or directly i.e. Option 4a. The procedures and protocols for the Xn interface between eL

Home                 LTE                NB-IoT            5G(NR-NSA)   What is DRX and DRX active period? What channels does it monitor in active period? Data transmission between UE and their base stations(eNodeB) uses radio frames with10ms duration, where in each radio frame consists of 10 1ms( 1 frame=10ms duration=10 subframe) subframes. Physical Downlink Control Channel (PDCCH) at the beginning of each subframe indicates whether there is data for UE to receive or not. Devices has to monitor these PDCCHs in each subframe so that it can find out whether they carry any data to receive. Because devices do not receive data in every subframe, this monitoring process naturally leads to high battery consumption.  What is the purpose of DRX? The main purpose of DRX is to lower battery consumption when there is no UL/DL data. means, when there is no traffic(DL/UL) that time devices enter into sleep mode (with RF module turned off) for some period of time as configured by

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 will be most attractive for operators which have early deployments of 5G NR access systems in areas where legacy eNB and EPC a

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 2: SA NR Connected to 5G Core This deployment scenario will specifically be attractive in areas where there is no legacy LTE system and the operator needs to deploy a full-fledged 5G NR access system. This option allows the operator to implement all types of 5G use-cases like eMBB, mMTC and URLLC. A pre-requisite for this option is that the operator should have multiple spectrums so that they can provide all the above-mentioned use-cases and also provide ubiquitous 5G coverage. This is the most attractive option for early deployment of full-fledged 5G networks. The operators will have the option of introducing 5G-only service without 4G interworking. In SA NR, the gNB connects to the 5G Core. The SA NR system has been defined in the fu

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 1: SA LTE Connected to EPC-legacy Option 1 represents the current 4G (LTE) deployments. It is also called Standalone LTE or EPC connected legacy. As of now, most of the operators might have already deployed this option. The standalone option is a simple solution for operators to manage and can be deployed as an independent network using normal inter-generation handover between 4G and 5G for service continuity.

Home                 LTE                NB-IoT            5G(NR-NSA)   What is PDCCH and what information does it carry? Physical Downlink Control Channel (PDCCH) is a physical channel that contains control information for the downlink data (DCI) to be sent to UE in the current subframe and UL grants for the UEs that want to send uplink data. In simple terms, PDCCH carries the Downlink Control Information (DCI) message which indicates resource assignment for single or multiple UEs. Where is PDCCH located in a subframe? PDCCH occupies the first n (n = the value of PCFICH) OFDM symbols of a subframe (except if 1.4MHz bandwidth are supported; then PDCCH occupies 4 OFDM symbols). The exact number of OFDM symbols occupied by PDCCH is given in PCFICH channel which occupies the first symbol of a subframe. O ne advantage of allocating PDCCH at the start of a subframe is that if a UE does not get schedule in any subframe that time UE can switch off its receiver circui

Home                 LTE                NB-IoT            5G(NR-NSA)   Hi Guys today we will learn about the use cases of 5G which are proposed by 3GPP. In responding to the requirements of the services and applications coming up in the near future, the 5G system aims to provide a flexible platform which would enable new business cases and integrate vertical industries, such as automotive, manufacturing, energy, eHealth, and entertainment. There are three main categories and corresponding use cases for the 5G (5G service type): 1)  Enhanced Mobile Broadband (eMBB): It is also called Extreme Mobile Broadband. eMBB supports stable connections with extremely high peak data rates, as well as moderate rates for cell-edge users. ·          Higher capacity – broadband access must be available in areas of high population density, like city centers, office buildings or public venues like stadiums or conference centers’, in both indoors as well as out