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LTE Network Fundamentals

  LTE Network Fundamentals: Essential Questions and Answers :- Q.1 What is possible range of PCI? ->0-503, PSS(0,1,2) and SSS(0-167) Q.2 What are the Physical Downlink Signals? ->Reference signal and synchronization signals - PSS and SSS Q.3 Difference between RSRP & RSRQ? ->RSRP – avg power across all received RS symbols in measurement bandwidth ->RSRQ-NxRSRP/RSSI ->N- no of RBs of eutra rssi measurement bandwidth Q.4 Repetition period of MIB? ->40ms Q.5 What is modulation scheme used for MIB? ->QPSK Q.6 Which channel carries user data in DL? (Basic) ->PDSCH Q.7 How many OFDM symbols are used for PDCCH? ->1, 2, or 3 as indicated by PCFICH Q.8 Which Physical DL channel carries the Paging channel? ->PDSCH Q.9 S1 Interface ->Enode B - MME - S1C and Enode B - SGW - S1U Q.10 Function of PHICH ->HARQ indication Q.11 Modulation scheme in PHICH? ->BPSK Q.12 What All BW supported in LTE? ->1.4MHz, 3MHz, 5MHz, 10MHz, 15MHz, 20MHz Q.13 What is X2? -&

What is the difference between RF Planning and RF Optimization?

  📌 What is the difference between RF Planning and RF Optimization? RF Planning and RF Optimization are two distinct phases within the field of Radio frequency, particularly in the context of Mobile Communication. RF Planning and RF Optimization are critical for ensuring the efficient and effective operation of Wireless systems, but they involve different processes and objectives. 📍 RF PLANNING: - RF Planning is the initial phase in the deployment of a wireless network. The main goal is to design and plan the layout of the network to ensure optimal coverage, capacity, and quality of service. 📍 What are the activities within RF Planning? 👉  Site Selection: Identifying suitable locations for base stations (cell sites) considering factors like coverage area, capacity requirements, and interference. 👉 Frequency Planning: Allocating frequencies and channels to different cells to minimize interference and maximize spectrum utilization. 👉  Antenna Placement: Determining the optima

Control Channel vs. Traffic Channel 📶

  Control Channel vs. Traffic Channel 📶 Are you aware of the key differences between control channels and traffic channels in cellular networks? Let's shed some light on these critical components! 🌐📲 🔹 Control Channel: As the name suggests, the control channel handles signaling and control information between mobile devices and the network infrastructure. It facilitates essential communication tasks, including call setup, termination, handover, and so on... 🔹 Traffic Channel: Once a communication session is established, the traffic channel takes the spotlight. This channel carries the actual user data, such as voice calls, video streaming, text messages, or any other data exchanged between your device and the network. It's responsible for delivering the content you send and receive. 🌟 While the control channel focuses on managing and coordinating communication, the traffic channel is dedicated to delivering the content and information you exchange with the network. 🎗Unde

Understanding the Importance of CCEs in LTE Networks

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  Understanding the Importance of CCEs in LTE Networks In LTE, CCE (Control Channel Element) plays a crucial role in transmitting control information. Let’s dive into the details: 1. PDCCH (Physical Downlink Control Channel): The PDCCH carries information related to resource allocation, scheduling, and other control signaling from the (eNodeB) to the (UE) . It helps the UE understand where data is located in the PDSCH (Physical Downlink Shared Channel). 2- Structure of PDCCH: * PDCCH is composed of CCEs (Control Channel Elements). * Each CCE consists of 36 REs (Resource Elements). * PDCCH uses aggregation layers, which group CCEs: ↗️ Aggregation layer 1: Uses 1 CCE and is employed in very good radio conditions. ↗️ Aggregation layer 2: Utilizes 2 CCEs and is common in normal radio conditions. ↗️ Aggregation layer 4: Uses 4 CCEs and provides robust allocation for signaling and control information. ↗️ Aggregation layer 8: Utilizes 8 CCEs and is the most robust allocation, often used

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