Lauro

Expert Opinion

Expert Opinion
Short LTE articles and opinions by our team of Subject Matter Experts (SMEs)
  • Lauro

    Handover Parameters (Part 1 of 3)

    • 4 Comments
    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 of the parameter filtercoefficient...
  • Lauro

    Cell Radius in LTE (Part 1 of 3)

    • 3 Comments
    The cell radius in LTE is affected and/or determined by three factors: a) The Preamble Format b) The Cyclic Shift the corresponds to the ZeroCorrelationZoneConfig parameter and, c) The Cell Radius Parameter ...
  • Lauro

    RACH Preamble Planning

    • 3 Comments
    The total number of RACH preambles available in LTE is 64. These preambles are shared among users for initial access and handover. Access to LTE systems can be classified based on the reservation or not of preambles for access...
  • Lauro

    Handover Parameters (Part 3 of 3)

    • 2 Comments
    Filter Coefficient for Event a3 Once the UE is configured to do measurements, the UE starts measuring reference signals from the serving cell and any neighbors it detects. The next question is whether the UE should look at...
  • Lauro

    RACH Capacity (Part 1 of 2)

    • 2 Comments
    In this blog, an approximation to the Random Access Channel Capacity is provided. To this aim, several assumptions are utilized. The number of sub-frames utilized for random access is provided for by the parameter prachconfigurationindex...
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    Format 2: PUCCH Capacity Calculations

    • 2 Comments
    In this blog the capacity of the PUCCH for format 2 is assessed. The following table shows the PUCCH formats used for channel feedback. The channel feedback could carry channel quality indicator (CQI), Precoding Matrix Indicator...
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    Effect of Closed Loop Power Control on the UL RSSI

    • 2 Comments
    Effect of Closed Loop Power Control on the UL RSSI The Received Signal Strength Indicator (RSSI) in the uplink is also affected by the parameter settings that govern closed loop power control in LTE. Immediately after the...