RF
GSM Control Channel Processing Through Physical Layer
Explore GSM control channel processing in the physical layer, covering SACCH, FACCH, BCCH, PCH, AGCH, and more, as per 3GPP TS 45.003.
Articles
Showing 20 posts (Page 7 of 20)
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GSM Downlink Packet Switched (PS) Call Flow Explained
Learn about the packet switched (PS) call flow in GSM downlink for data transfer. Understand GPRS attach, PDP context activation, and the channels involved.
GSM Frame Error Rate (FER) Testing: 900MHz & 1800MHz Limits
Overview of Frame Error Rate (FER) testing limits for GSM user equipment (UE) in the 900MHz and 1800MHz frequency bands according to 3GPP TS 51.010.
GSM Handover Failure: Physical Channel Issues and T313 Timeout
This article explains GSM handover failures from UTRAN due to physical channel issues, leading to timer T313 expiry, and outlines the handover procedure.
GSM Handover/Cell Reselection Failures: CRC Error Analysis
Explore the causes of GSM handover and cell reselection failures due to CRC errors, including interference, power issues, and algorithm limitations.
GSM Issue: UE Receives DM Instead of UA After Sending SABM
Explanation of a GSM network issue where a UE sends a SABM frame but receives a DM response instead of the expected UA, indicating connection establishment failure.
GSM Mobile Originated (MO) Call Flow Explained
Explore the GSM Mobile Originated (MO) call flow, detailing the messages exchanged between the mobile device and network layers during call setup and release.
GSM Mobile Terminated (MT) Call Flow Explained
Understand the GSM Mobile Terminated (MT) call flow, including message exchanges between the UE and network layers, and channels used.
GSM Packet Switched Channel Processing Through Physical Layer
Explore GSM packet-switched channels, focusing on GPRS (CS1-CS4) and EGPRS (MCS1-MCS9) coding schemes at the physical layer. Understand data rates and robustness trade-offs.
GSM Physical Layer (Layer-1) Explained
Explore the GSM physical layer (layer-1) functions, including baseband processing, FEC, ciphering, burst formation, and modulation for mobile station transmission.
GSM Protocol Stack and Architecture Explained
Explore the GSM protocol stack and architecture for Mobile Stations (MS) and Base Transceiver Stations (BTS), covering Layer 1 (PHY) and Layer 2 (LAPD, LAPDm).
GSM Protocol Stack: Layer 3 Overview
Explore GSM Layer 3 responsibilities, covering RRM, MM, CM, SCCP, and BSSMAP protocols. Understand message types and protocol discriminators.
GSM Radio Link Failure: Causes and Mechanisms
Explores the causes and mechanisms behind radio link failure in GSM networks, covering both mobile and network perspectives.
GSM Traffic Channel Processing in the Physical Layer
Explore GSM traffic channel processing through the physical layer, covering speech and data channels as per 3GPP TS 45.003.
GSM Uplink Packet Switched Data Call Flow
Explore the packet switched (PS) data call flow in GSM uplink, detailing GPRS attach and PDP context activation between mobile devices and network elements.
GSM vs CDMA: A Detailed Comparison of Mobile Communication Standards
Explore the key differences between GSM and CDMA cellular technologies, including their technical specifications, network structures, and historical significance in mobile communication.
GSM: PLMN Not Found Issue Explained
This article explains the PLMN not found issue in GSM networks, focusing on causes like weak signals, interference, network failures, and roaming data.
Health Monitoring with LEDs and Photodiodes for SpO2 and Heart Rate
Explore health monitoring systems using LEDs and photodiodes for heart rate and SpO2 measurement, covering system architecture, key components, and principles.
Heat Detector Basics and Types
Explore the fundamentals of heat detectors, comparing fixed temperature and rate of rise types, and their operational differences.
Hex to Decimal Conversion for Fixed-Point Integers
Convert between hex and decimal numbers in fixed-point format using C code. Includes handling positive/negative values and explanation of Q format.
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