Hongyan

Expert Opinion

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

    LTE System Information: Part 2

    • 1 Comments
    In E-UTRAN, SIBs 6, 7, 8 carry information for IRAT cell reselection to UTRAN, GERAN, and CDMA2000 systems respectively. SIB 1 and SIB 3 also carry IRAT related information. 7. SIB6 contains information for IRAT cell...
  • Hongyan

    LTE System Information: Part 1

    • 1 Comments
    LTE system information is one of the key aspects of the air interface. It consists of the Master Information Block (MIB) and a number of System Information Blocks (SIBs). The MIB is broadcast on the Physical Broadcast Channel...
  • Hongyan

    Sounding Reference Signal

    • 2 Comments
    LTE defines an optional sounding reference signal (SRS) in the UL. What is it for? UL channel quality, timing advance, and more. SRS is transmitted by the UE using a known sequence, similar to UL demodulation reference signal...
  • Hongyan

    How to calculate peak data rate in LTE?

    • 12 Comments
    You may hear it many times that the peak data rate of LTE is about 300Mbps? How is the number calculated? What are the assumptions behind? Let's estimate it in a simple way. Assume 20 MHz channel bandwidth, normal CP, 4x4...
  • Hongyan

    CQI Reporting in LTE

    • 2 Comments
    CQI (Channel Quality Indication) report is an important element of LTE and has significant impact on the system performance. There are two types of CQI report in LTE: periodic and aperiodic. The periodic CQI report is ...
  • Hongyan

    UE measurement in LTE

    • 4 Comments
    In cellular networks, when a mobile moves from cell to cell and performs cell selection/reselection and handover, it has to measure the signal strength/quality of the neighbor cells. We know that in UMTS, a UE measures RSSI, CPICH...
  • Hongyan

    Ways to support voice in LTE

    • 0 Comments
    It is known that LTE is a high speed data network and the circuit switched core network is no longer supported. The immediate question everyone wants to know is, “Will LTE support voice calls?” An operator may decide...