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Thread: 4G Low Data Throughput

  1. #1
    Junior Member Reputation: 10
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    2018-08-19
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    Default 4G Low Data Throughput

    Hello,

    What are the possible reasons for Low Data Throughput in 4G if RSRP & SINR/CINR is good?

    How to optimize it?

    Please suggest n support.

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  3. #2
    Senior Member Reputation: 1390
    Join Date
    2010-05-12
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    Default Re: 4G Low Data Throughput

    You need to look at the distribution of the CQI, to Make the drive tests for RSRQ. If there are low modulation ( QPSK), then optimization is needed


    Quote Originally Posted by Blaxian View Post
    Hello,

    What are the possible reasons for Low Data Throughput in 4G if RSRP & SINR/CINR is good?

    How to optimize it?

    Please suggest n support.

  4. #3
    Junior Member Reputation: 10
    Join Date
    2018-09-13
    Posts
    3


    Default Re: 4G Low Data Throughput

    Hi,

    You can check many things.

    1) RB allocation. How many RB are used for DL/UL.
    2) MCS/Modulation scheme.
    3) Distribution of Thrp vs CQI? Do you have higher Thrp for higher CQIs? Or there is a ceiling?
    4) Frame usage.
    5) MIMO usage.

    Post your findings and we can discuss further.

    Quote Originally Posted by Blaxian View Post
    Hello,

    What are the possible reasons for Low Data Throughput in 4G if RSRP & SINR/CINR is good?

    How to optimize it?

    Please suggest n support.

  5. #4
    Senior Member Reputation: 505
    Join Date
    2016-10-22
    Location
    South Caucasus, RA
    Posts
    316


    Default Re: 4G Low Data Throughput

    Quote Originally Posted by Blaxian View Post
    Hello,

    What are the possible reasons for Low Data Throughput in 4G if RSRP & SINR/CINR is good?

    How to optimize it?

    Please suggest n support.
    Good afternoon, Blaxian!
    Q: Is it a problem of Low Data Throughput in the entire 4G network or is there a problem with one LTE base station?
    With, great respect, Slava

  6. #5
    Senior Member Reputation: 506
    Join Date
    2010-05-10
    Posts
    317


    Default Re: 4G Low Data Throughput

    A no of factors could influence 4G throughput:
    a. size of cell (macros have lower throughput than micros)
    b. MCS used
    c. RSRQ value
    d. Loading and interference from adjacent cells
    e. Weak signals
    f. UE capability
    g. Scheduling technique (round robin, C/I or prop fair)

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