[ditar]

Hi all,

I have some issues that on some GSM sites.

site #1 -> Analyses at system BH:

High TCH blocking rate. High establish failures rate mainly due to T200 expiration. Extended cell.

Call path Recommendation for site #1:

LB is distorted on TRX0 &1, please check both radios for any loose cables or connectors, and tighten them up.

site #2 -> Analyses at system BH:

High TCH blocking. High establish failure rate cause T200 expiration. Drops cause by call clearing releases and T200 expiration. Almost 91% of outgoing HO failures rate, most of calls return to old channel (stay on current cell). Extended cell.

Call path Recommendation for site #2:
LB on TRX3 is higher by 3dB than the rest; please check cables and connectors on the UL path for TRX3

site #3 -> Analyses at system BH:

High TCH blocking rate. High drop call rate mainly due call clearing releases and radio link failures. Extended cell.

Call path Recommendation for site #3:

LB on TRX7 is high (7dB); please check the UL path for any loose connectors/cables. Also TRX0 has two humps in its LB graph, possible swapped cables, please check this radio

site #4 -> Analyses at system BH:

High establish failure rate caused by assign fails.
High drop call rate due to radio link failure and T200 expirations. High Incoming HO failure rate.

Call path Recommendation for site #4:

Check all radios along with its DL & UL path , specifically TRX3 (very high LB, 24dB)

site #5 -> Analyses at system BH:

— —
Call path Recommendation for site #5:

TRX0 has high LB (30dB), please check the radio for Hardware issues and its cabling in the UL path

site #6 -> Analyses at system BH:

High establish failure rate due to T200 expirations. High Incoming HO failure rate.
Call path Recommendation for site #6:

TRX0 (LB= 21dB), TRX1 (LB= 19dB); and TRX3 (LB= -21) also bad RxQual on TRX3. Please check all radios for Hardware issues along with its cables and connectors

site #7 -> Analyses at system BH:

High TCH and SDCCH blocking rate. High establish failure rate due T200 expiration and assign fails (not related to radio interface). High drop call rate caudes
by HO and radio causes. Overflow. High Incoming HO failure rate.

Call path Recommendation for site #7:

TRX1 has a low LB (-6dB); please check the radio for Hardware issues; TRX2 has bad UL RxQual and UL Interference

——————————–

LB stands for Load Balancing.
Is there any-one who met these issues?

Regards

[Pix]

it’s a list of problems, with their solutions.. no more work to do then…
thanks for the tips 🙂

[venusesobn]

hi there! I am new to the board and just wanted to introduce myself 🙂

[Author]

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