aleon23
2012-08-07, 01:38 PM
Dears experts,
Please your help with ideas or suggestion in order to identify where the problem is, as next short summary:
Since one week ago in nodeB CAMPOCHINO sector Z increase to -60dBm, however sector X, Y & W keep RTWP under -70dBm, in this phase we determined block sector Z and result were that RTWP in sector X, Y & W decreased to normal values (around -100dBm), also the neighbors decreased RTWP levels (check picture below)
The first suggestion was change RRU of sector Z in CAMPPOCHINO and second suggestion was antenna swap, but it didn´t work for any case.
In the next picture, around 20:00 sector Z was block (RTWP decreased in all sectors)
Around 6:00 sector Z RRU swap (no changes after 9:00, peak hour in that zone)
Around 12:00 sector Z was block again (RTWP decreased in all sectors)
Around 20:00 sector Z antenna swap (no changes, RTWP keep increase)
We also cheked external interference, but nothing was found in spectrum analyzer, this is an strange behavior that cause bad RTWP but improve when we block sector Z.
https://snt125.mail.live.com/att/GetInline.aspx?messageid=9b85426c-e019-11e1-a00e-002264c209ea&attindex=3&cp=-1&attdepth=3&imgsrc=cid%3aimage009.png%4001CD73BA.08BA22A0&cid=ea09e3cd243bb423&shared=1&blob=M3xpbWFnZTAwOS5wbmd8aW1hZ2UvcG5n&hm__login=iildii_09&hm__domain=hotmail.com&ip=10.13.122.8&d=d6717&mf=0&hm__ts=Tue%2c%2007%20Aug%202012%2004%3a14%3a52%20GMT&st=iildii_09&hm__ha=01_346da5ccbfed5176c2d7c9695b06474df9f88a71211c45906c3270b459e40545&oneredir=1
https://snt125.mail.live.com/att/GetInline.aspx?messageid=9b85426c-e019-11e1-a00e-002264c209ea&attindex=4&cp=-1&attdepth=4&imgsrc=cid%3aimage010.png%4001CD73BA.08BA22A0&cid=ea09e3cd243bb423&shared=1&blob=NHxpbWFnZTAxMC5wbmd8aW1hZ2UvcG5n&hm__login=iildii_09&hm__domain=hotmail.com&ip=10.13.122.8&d=d6717&mf=0&hm__ts=Tue%2c%2007%20Aug%202012%2004%3a14%3a52%20GMT&st=iildii_09&hm__ha=01_50d089e3bb64816eb36f9b334221bbd6a855a204306f92fb71b9f27723baed63&oneredir=1
Hope for your answer,
Best Regards
Please your help with ideas or suggestion in order to identify where the problem is, as next short summary:
Since one week ago in nodeB CAMPOCHINO sector Z increase to -60dBm, however sector X, Y & W keep RTWP under -70dBm, in this phase we determined block sector Z and result were that RTWP in sector X, Y & W decreased to normal values (around -100dBm), also the neighbors decreased RTWP levels (check picture below)
The first suggestion was change RRU of sector Z in CAMPPOCHINO and second suggestion was antenna swap, but it didn´t work for any case.
In the next picture, around 20:00 sector Z was block (RTWP decreased in all sectors)
Around 6:00 sector Z RRU swap (no changes after 9:00, peak hour in that zone)
Around 12:00 sector Z was block again (RTWP decreased in all sectors)
Around 20:00 sector Z antenna swap (no changes, RTWP keep increase)
We also cheked external interference, but nothing was found in spectrum analyzer, this is an strange behavior that cause bad RTWP but improve when we block sector Z.
https://snt125.mail.live.com/att/GetInline.aspx?messageid=9b85426c-e019-11e1-a00e-002264c209ea&attindex=3&cp=-1&attdepth=3&imgsrc=cid%3aimage009.png%4001CD73BA.08BA22A0&cid=ea09e3cd243bb423&shared=1&blob=M3xpbWFnZTAwOS5wbmd8aW1hZ2UvcG5n&hm__login=iildii_09&hm__domain=hotmail.com&ip=10.13.122.8&d=d6717&mf=0&hm__ts=Tue%2c%2007%20Aug%202012%2004%3a14%3a52%20GMT&st=iildii_09&hm__ha=01_346da5ccbfed5176c2d7c9695b06474df9f88a71211c45906c3270b459e40545&oneredir=1
https://snt125.mail.live.com/att/GetInline.aspx?messageid=9b85426c-e019-11e1-a00e-002264c209ea&attindex=4&cp=-1&attdepth=4&imgsrc=cid%3aimage010.png%4001CD73BA.08BA22A0&cid=ea09e3cd243bb423&shared=1&blob=NHxpbWFnZTAxMC5wbmd8aW1hZ2UvcG5n&hm__login=iildii_09&hm__domain=hotmail.com&ip=10.13.122.8&d=d6717&mf=0&hm__ts=Tue%2c%2007%20Aug%202012%2004%3a14%3a52%20GMT&st=iildii_09&hm__ha=01_50d089e3bb64816eb36f9b334221bbd6a855a204306f92fb71b9f27723baed63&oneredir=1
Hope for your answer,
Best Regards