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Network planning and optimization Mci network fulfillment project Tehran T3109 Timer trial 24 th august 2013

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Page 1: T3109 Timer Change Trial.pptx

Network planning and optimizationMci network fulfillment projectTehran

T3109 Timer trial24th august 2013

Page 2: T3109 Timer Change Trial.pptx

MCCI Iran Presentation | Commercial in confidence | © Ericsson AB 2012 | 2012-03-13

SUMMARY

• Timer T3109 (Supervision of the channel release procedure ) was changed for b063N from 12 to 15 s

• The timer T3109 supervises the channel release procedure. • Timer start condition: The timer T3109 starts when the BSC

sends a CHANNEL_REL message to the MS (via a BTS). • Timer stop condition: The timer T3109 stops when the BTS

sends a RELEASE_INDICATION message. This is done after the BTS has received a DISC-frame from the MS.

• Action performed on timer expiry: When the timer T3109 expires, the BSC sends an RF_CHANNEL_REL message to the BTS.

• Appropriate value: Min. = 8 s.Max. = 15 s.Def. = 12 s

• It is expected to improve drops during channel release procedure due to t3109 timer expiry

Page 3: T3109 Timer Change Trial.pptx

MCCI Iran Presentation | Commercial in confidence | © Ericsson AB 2012 | 2012-03-13

Signaling diagram

Page 4: T3109 Timer Change Trial.pptx

MCCI Iran Presentation | Commercial in confidence | © Ericsson AB 2012 | 2012-03-13

TCH Traffic vs cdr

TIMER WAS CHANGED

STABLE

Page 5: T3109 Timer Change Trial.pptx

MCCI Iran Presentation | Commercial in confidence | © Ericsson AB 2012 | 2012-03-13

TCH Traffic vs ccc

TIMER was changed

STABLE

Page 6: T3109 Timer Change Trial.pptx

MCCI Iran Presentation | Commercial in confidence | © Ericsson AB 2012 | 2012-03-13

B063n – TCH Traffic vs Cssr

Timer changed

STABLE

Page 7: T3109 Timer Change Trial.pptx

MCCI Iran Presentation | Commercial in confidence | © Ericsson AB 2012 | 2012-03-13

B063n – SD Traffic vs SDR

Timer changed

Page 8: T3109 Timer Change Trial.pptx

MCCI Iran Presentation | Commercial in confidence | © Ericsson AB 2012 | 2012-03-13

• Timer Change was implemented on 21st August

• No Major Change observed in KPIs up till now.

• KPIs are still under observation after weekend and further update will be done in case of any impact

results

Page 9: T3109 Timer Change Trial.pptx

MCCI Iran Presentation | Commercial in confidence | © Ericsson AB 2012 | 2012-03-13

SDCCH establishment & TASR

• SDCCH establishment rate & TASR are satisfactory, Improvement in SDCCH establishment rate is expected with the improvement in SDCCH drop rate


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