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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? -&

TOWER _SAFETY CLIMBING

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Call Drop vs Call Block

  📞 Understanding the Difference: Call Drop vs Call Block in Telecommunication 📞 📵 Call Drop: Imagine being in the middle of an important phone call, and suddenly, the connection gets severed, leaving you frustrated and disconnected. That's what we call a call drop. It refers to the unexpected termination of a call before its completion, resulting in an abrupt disconnection. 🎗Some Factors Control Call Drop: ✅ Network issues. ✅ Handover problems. ✅ Equipment failures. ✅ Interference problems. ⚡Those factors impacting communication reliability. As telecommunication professionals, it's crucial for us to address these issues and ensure a smooth user experience. 🚫 Call Block: Now, let's talk about call blocks. Have you ever dialed a number only to hear a busy tone, a message saying the call cannot be completed, or simply no response? That's a call block. Call blocks occur when incoming calls are intentionally or unintentionally rejected or blocked. 🎗Some Factors Contro

RTWP Issue

 RTWP Issue What is RTWP? If you work with UMTS,'ve probably heard someone talk about RTWP. Its definition can be found in a dictionary of acronyms, such as [Only registered and activated users can see links] Received Total Wideband Power. Represents a measure of UMTS technology: the total level of noise within the UMTS frequency band of any cell. RTWP is related to uplink interference, and its monitoring helps control the call drops - mainly CS. It also has importance in the capacity management, as it provides information for the Congestion Control regarding Uplink Interference. In UMTS, the uplink interference may vary due to several factors, such as the number of users in the cell, the Service, Connection Types and Conditions of Radio, etc. As our goal is to always be as simple as possible, we will not delve in terms of formulas or concepts involved. We will then know the typical values, and know what must be done in case of problems Typical Values Ok, we know that RTWP can

What is RTWP?

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    What is RTWP?  Represents a measure of UMTS technology: the total level of noise within the UMTS frequency band of any cell. RTWP is related to uplink interference, and its monitoring helps control the call drops - mainly CS. It also has importance in the capacity management, as it provides information for the Congestion Control regarding Uplink Interference. In UMTS, the uplink interference may vary due to several factors, such as the number of users in the cell, the Service, Connection Types and Conditions of Radio, etc.. As our goal is to always be as simple as possible, we will not delve in terms of formulas or concepts involved. We will then know the typical values, and know what must be done in case of problems.  Typical Values   Ok, we know that RTWP can help us in checking the uplink interference, then we need to know its typical values. In a network is not loaded, normal, acceptable RTWP Average value is generally around - 104.5 and -105.5 dBm Values around -95 dBm indicat

NOKIA _SBTS _ RX POWER TOO LOW

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inter site ca x2 link unavailability

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5G KPIs Overview

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🔹5G KPIs Overview 🔹 KPIs Categories: 🔹Service Integrity 🔹Utilization 🔹Availability 🔹Traffic 🔹Accessibility 🔹Retainability 🔹Mobility 🔹Service Integrity 🔸User Uplink/Downlink average throughput 🔸Cell Uplink/Downlink average throughput 🔹Utilization 🔸PRB Uplink/Downlink Utilization 🔸CPU Utilization 🔹Availability 🔸Radio Network Availability Rate 🔹Traffic 🔸Uplink/Downlink Traffic Volume 🔸 Average/Maximum User Number 🔹Accessibility 🔸RRC Connection Setup Success Rate 🔸NG SIG Setup Success Rate 🔸QoS Flow Setup Success Rate 🔸Call Setup Success Rate 🔹Retainability 🔸Service Drop Rate 🔹Mobility 🔸Intra Frequency Handover Out Success Rate 🔸Intra Frequency Handover In Success Rate 🔸Inter Frequency Handover Out Success Rate 🔸Inter Frequency Handover In Success 🔸Inter-RAT Handover Out Success Rate (NR to LTE) 🔸EPSFB Success Rate  

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