Featured Video Tutorials

LTE & VoLTE Architecture: Part 1

LTE & VoLTE Architecture: Part 2

  • Hongyan

    PDCCH Construction

    The PDCCH (Physical Downlink Control Channel) in LTE carries UE-specific scheduling assignments for Downlink (DL) resource allocation, Uplink (UL) grants, PRACH (Physical Random Access Channel) responses...
  • Don

    Codewords and Layers and Ports, Oh My!

    We throw a lot of terms around when we discuss LTE data transmissions, especially when we get into some of the details of sending data over the PDSCH using multiple antenna techniques. We describe transport...
  • Lauro

    Handover Parameters (Part 1 of 3)

    There are three ways of optimizing handovers in LTE: a) Via the modification of the parameters a3offset and hysteresisa3 b) By changing the parameter timetotriggereventa3 c) Via the modification...
  • Lynne

    CSCF in VoLTE – The P-CSCF (Part 1 of 4)

    As VoLTE rolls into telecom networks across the world, understanding the IP Multimedia Subsystem (IMS) is critical for many telecom engineers. 3GPP Release 5 in 2002 introduced IMS, which for years has...