huawei performance - wpc -cluster75!76!77

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  • 7/27/2019 Huawei Performance - WPC -Cluster75!76!77

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    www.huawei.com

    .

    Jakarta,

    30thMay 2011

    HUAWEI PerformanceWPC Cluster 75, 76 & 77

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    Huawei Confidential

    WPC - TDR

    Page 1

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    Huawei Confidential

    ALWASILAHMG1

    Page 2

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    Huawei Confidential

    TDR vs TCH Drop

    Page 3

    TDR increase from 4 to 6% but Drop count maintain.

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    Huawei Confidential

    Drop reason

    Page 4

    Drop reason Radio interface in stable state

    (connection failure & Error Indication) & in

    Handover state.

    The most contributor for TCH drop are

    Downlink Receive level.

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    Huawei Confidential

    TRX check (TRX 0)

    Page 5

    TA overshoot to TA 8 (4 Km) since distance to neighbors only 1.5 Km, may cause interference, DL level

    not very good, UL quality have some portion spread on quality 2 to 7.

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    Huawei Confidential

    Map

    Page 6

    Distance to neighbors less then 1.5 Km but TA until 8 (4 Km) may cause interference.

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    Huawei Confidential

    TRX check (TRX 3)

    Page 7

    TRX 3 have interference band 3 (-90 to -87 dBm) and UL / DL balance showing UL weaker then DL level.

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    Huawei Confidential

    Alarm

    Page 8

    All Alarm major / critical already clear, except for load fuse

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    Huawei Confidential

    SUMMARY

    Analysis:

    1Drop reason Radio interface in stable state & in Handover state2TRX 3 have interference band 3 (-90 to -87 dBm) & unbalance UL/DL , UL weaker the DL, suspect interference.

    TRX 0 UL quality is bad since spread on quality 2 to 7, suspect interference or TRX faulty.

    3TA overshoot to 8 (4 Km), since neighbors distance < 4 Km.

    Suggestion:

    1downtilt ET to reduce overshoot & interference.

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    Huawei Confidential

    DURIKOSAMBIMG1

    Page 10

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    Huawei Confidential

    TDR vs TCH Drop

    Page 11

    TDR increase from 4 to 6% but Drop count maintain.

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    Huawei Confidential

    Drop reason

    Page 12

    Drop reason Radio interface in stable state

    (connection failure & Error Indication) & in

    Handover state.

    The most contributor for TCH drop are

    Downlink Receive level.

    TRX h k (TRX 0)

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    Huawei Confidential

    TRX check (TRX 0)

    Page 13

    TA overshoot to TA 8 (4 Km) since distance to neighbors only 1.5 Km, may cause interference, have

    interference band 3 (-90 to -87 dBm) ,DL level not very good, UL quality have some portion spread on

    quality 2 to 7.

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    Huawei Confidential

    Map

    Page 14

    Distance to neighbors less then 1 Km but TA until 8 (4 Km) may cause interference.

    TRX check

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    Huawei Confidential

    TRX check

    Page 15

    UL/DL balance is good

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    Huawei Confidential

    Outgoing HO

    Page 16

    Outgoing HO to FODAANMOGOTMG2, DURIKOSAMBIMG2 & KEMBANGANUTRMG3 need to adjust

    HO parameter to reduce fail.

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    Huawei Confidential

    Alarm

    Page 17

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    Huawei Confidential

    SUMMARY

    Analysis:

    1Drop reason Radio interface in stable state & in Handover state2TRX have interference band 3 (-90 to -87 dBm) & UL quality is bad since spread on quality 2 to 7, suspect interferenceor TRX faulty.

    3TA overshoot to 8 (4 Km), since neighbors distance < 1 Km.

    Suggestion:

    1downtilt ET to reduce overshoot & interference.2HO parameter might need to adjust.

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    Huawei Confidential

    FODAANMOGOTMG2

    Page 19

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    Huawei Confidential

    TDR vs TCH Drop

    Page 20

    TDR increase from 4 to 8%.

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    Huawei Confidential

    Drop reason

    Page 21

    Drop reason Radio interface in stable state

    (connection failure).

    The most contributor for TCH drop are

    Downlink Receive level & Uplink Quality.

    TRX check (TRX 0)

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    Huawei Confidential

    ( )

    Page 22

    TA overshoot to TA 7 (3.5 Km) since distance to neighbors less then 2 Km, may cause interference,

    have interference band 3 (-90 to -87 dBm) , UL quality have some portion spread on quality 2 to 7.

    Map

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    Huawei Confidential

    Map

    Page 23

    Distance to neighbors less then 2 Km but TA until 7 (3.5 Km) may cause interference.

    TRX check

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    Huawei Confidential Page 24

    UL weaker then DL

    Alarm

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    Huawei Confidential

    Alarm

    Page 25

    SUMMARY

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    Huawei Confidential

    SUMMARY

    Analysis:

    1Drop reason Radio interface in stable state (connection failure)2TRX have interference band 3 (-90 to -87 dBm) & UL quality is bad since spread on quality 2 to 7, suspect interferenceor TRX faulty.

    3

    TA overshoot to 7 (3.5 Km), since neighbors distance < 2 Km.

    Suggestion:

    1downtilt ET to reduce overshoot & interference.

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    Huawei Confidential

    PULOHRPNINDHMG1

    Page 27

    TDR vs TCH Drop

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    Huawei Confidential

    TDR vs TCH Drop

    Page 28

    TDR increase from 5 to 11%.

    Drop reason

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    Huawei Confidential

    Drop reason

    Page 29

    Drop reason Radio interface in stable state

    (connection failure).

    The most contributor for TCH drop are

    Downlink Receive level & Uplink Quality.

    TRX check (TRX 0)

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    Huawei Confidential Page 30

    TA overshoot to TA 7 (3.5 Km) since distance to neighbors less then 2 Km, may cause interference,

    have interference band 3 (-90 to -87 dBm) , UL quality have some portion spread on quality 2 to 7.

    Map

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    Huawei Confidential

    p

    Page 31

    Distance to neighbors less then 2 Km but TA until 7 (3.5 Km) may cause interference.

    TRX check

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    Huawei Confidential Page 32

    UL weaker then DL

    Alarm

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    Huawei Confidential Page 33

    SUMMARY

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    Huawei Confidential

    SUMMARY

    Analysis:

    1Drop reason Radio interface in stable state (connection failure)2TRX have interference band 3 (-90 to -87 dBm) & UL quality is bad since spread on quality 2 to 7, suspect interferenceor TRX faulty.

    3

    TA overshoot to 7 (3.5 Km), since neighbors distance < 2 Km.

    Suggestion:

    1downtilt ET to reduce overshoot & interference.