LTE drop Rate Decreased after DRX enabled

[fahmi]

Dears,

After DRX enabled for both Nokia and Huawei, the erab drop rate decreased. Any explanation for this behavior?


BR,

[oswe]

it is mentioned in documentation...you gain with these predefined cycles

[rimeka]

when DRX enabled, Ue may enter to out of sync state. When there is a downlink data come for the Ue, eNodeB will sent PDCCH order. In case there are no response for PDCCH order, eNodeB consider this as erab drop.
Also when Ue enter DRX and out of sync, and RRC inactivity timer expired, eNodeB will sent PDCCH order for the Ue to wake up the Ue. In case there are no response for PDCCH order, it is also considered as drop.

[juanka21]

do You want to say Increased instead of Decreased ?..


Dears,

After DRX enabled for both Nokia and Huawei, the erab drop rate decreased. Any explanation for this behavior?


BR,

[fahmi]

The drop decreased ! this doesn't make sense to me !

[fahmi]

triggered counter is : L.E-RAB.AbnormRel.Radio.DRBReset and out of sync reduced

Any explanation ?

41341

[rimeka]

Maybe you can compare counter L.E-RAB.AbnormRel.eNBTot and L.E-RAB.AbnormRel.

L.E-RAB.AbnormRel count abnormalRel for Active RAB, and L.E-RAB.AbnormRel.eNBTot count for all RAB (active and non active). Probably the abnormal release on active RAB increased after DRX enable, due to more Ue with active RAB compare to DRX disabled. previously drop counted on L.E-RAB.AbnormRel.eNBTot and now count on L.E-RAB.AbnormRel due to more Ue with active RAB.

[fahmi]

Both counters increased after deactivating the DRX !

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