How to Resolve RTWP Problem? Common Solution for RTWP in Cellular Network Optimization -
Most common solution is configuration issue in RNC and RBS. Check Jumper cable. Check VSWR Check any new activation in RNC
Also take a one week data hourly for this analysis.Some possibility that you got problem in some hours only. For Ericsson System you got this value from below counters pmSumUlRssi pmSamplesUlRssi eensten 01-09-2014, 03:34 PM Want to share my experience for high RTWP problem in Indoor coverage or in build ing coverage : Possibility can happen also in combiner device which have low qua lity level of component which cause intermodulation. Usually happen for In BUild ing coverage which combine multi operator. I try to change the combiner device w ith more expesive one (high quality) the high RTWP problem become normal (reduce to -100 or -95 dBm from -70dBm). Case Close....so please check also the combine r and their connections. Hope is this information is useful. BR, eensten sanjeru 01-23-2014, 06:24 PM hi, In one IBS, Mean RTWP values is high (-75dbm--60dbm) in a specific time ( 6.00pm to 10.00pm). how could i figure it out whether it is a extenal interference or internal interference. futher once i check the VSWR value was 1.3. thanks tariqehsan16 02-21-2014, 12:10 PM Received Total Wideband Power is to be troubleshooted by checking the amount of interference of internal or external interference in the network. tariqehsan16 02-21-2014, 12:11 PM Want to share my experience for high RTWP problem in Indoor coverage or in build ing coverage : Possibility can happen also in combiner device which have low qua lity level of component which cause intermodulation. Usually happen for In BUild ing coverage which combine multi operator. I try to change the combiner device w ith more expesive one (high quality) the high RTWP problem become normal (reduce to -100 or -95 dBm from -70dBm). tariqehsan16 02-21-2014, 12:11 PM Hi All Kindly provide the solution on RTWP cases in ZTE and Huawei and Ericsson.. tariqehsan16 02-21-2014, 12:12 PM Mean RTWP values is high (-75dbm--60dbm) in a specific time ( 6.00pm to 10.00pm) . how could i figure it out whether it is a extenal interference or internal int erference. futher once i check the VSWR tariqehsan16 02-21-2014, 12:13 PM Joint Analysis of Traffic and Channel Power Distributions
in 3G Wireless Telecommunications Networks tariqehsan16 02-21-2014, 12:14 PM Providing capacity to keep pace with the explosive growth in wireless data servi ces is a highly complex task, due to the time variant and geographically inhomogeneous nature of offered traffic. To ensure a consistent, highquality user experience, both site and carrier density tariqehsan16 02-21-2014, 12:17 PM The Universal Mobile Telecommunication System reserves a range of radio frequenc ies for the transmission of telephone calls. This band of frequencies is the "Wi deband" in the name of RTWP. It is a finite resource and it is possible that it can be overloaded. This is "congestion" and RTWP is a tool aimed at managing thi s phenomenon captx 04-15-2014, 12:51 PM Hi, We have checked the Combiners VSWR Parameters and jumber cables. But still the RTWP is high for the cell. What could be the issue and how to reso lve it? nabil zaidi 08-05-2014, 09:54 AM hi all actualy we this problem of RSSI in 3g network till now we dont found solution i allways check jumpers ,, RRU fibre swap antenna but RSSI still high dbourne89 11-14-2014, 09:45 AM if the value is higher at a particular time then it may be external interference .check for faulty repeaters in sorroundings farshadr 01-06-2015, 09:42 PM Hi, is there any code cong or power cong in cell, how much is dedicated to HSPA cpski02 03-30-2015, 01:54 PM We've often found TMA's are a issue for RTWP. They will sweep and PIM test fine but still cause RTWP. aamamun124 04-07-2015, 12:35 PM Hi, I got high RTWP(-850 instead of -1000) for all 3 sectors in U850. Below test s are done: 1. When put dummy load on top of main feeders bypassing antenna , RT WP found OK for all 3 sectors. (2) RET was changed to 10 degree, but no improvem ent is RTWP (3) Sweeps are taken, seems normal. Any idea what is causing RTWP pr oblem? simohamed 10-05-2015, 08:33 PM hi all what is the difference between the RTWP and main diversity in WCDMA shakeel56 04-20-2016, 05:42 PM Hi, We have checked the Combiners VSWR
Parameters and jumber cables. But still the RTWP is high for the cell. What could be the issue and how to reso lve it? Try to Please check mechanical tilt and azimuth of each antenna _Prestissimo_ 06-24-2016, 09:05 AM Great tips. Looks like most of RTWP problems are result of the jumper connections. nastotech 02-22-2017, 01:27 PM i have resolved the value just now, thanks to all please use cabx command ================================================== ============================= ===================== ================ Cell RX1(dBm) RX2(dBm) Delta TrDevices ================================================== ============================= ===================== ================ S1C1 -85.5 -85.1 0.4 *1-1/RRUW-1/1 *1-1/RRUW-1/2 S1C2 -83.1 -83.4 0.3 *1-1/RRUW-1/3 *1-1/RRUW-1/4 ------------------------------------------------------------------------------------------------------------------see rssi value is -85 and -83.4 now increase this value (RX1 and RX2) to -108 if there is no combiner or TMA in my case i have combiner so i increase the value by losing jumper connections at RRU12 end and make VSWR high it automatically increase the RSSI Value Now i Have Cell RX1(dBm) RX2(dBm) Delta TrDevices ================================================== ============================= ===================== ================ S1C1 -102.2 -101.8 0.4 *1-1/RRUW-1/1 *1-1/RRUW-1/2 S1C2 -100.1 -100.2 0.1 *1-1/RRUW-1/3 *1-1/RRUW-1/4 hope it will help
We've often found TMA's are a issue for RTWP. They will sweep and PIM test fine but still cause RTWP. nastotech 02-22-2017, 01:30 PM Great tips. Looks like most of RTWP problems are result of the jumper connections. i have resolved the value just now, thanks to all please use cabx command ================================================== ============================= ===================== ================ Cell RX1(dBm) RX2(dBm) Delta TrDevices ================================================== ============================= ===================== ================ S1C1 -85.5 -85.1 0.4 *1-1/RRUW-1/1 *1-1/RRUW-1/2 S1C2 -83.1 -83.4 0.3 *1-1/RRUW-1/3 *1-1/RRUW-1/4 -------------------------------------------------------------------------------------------------------------------
see rssi value is -85 and -83.4 now increase this value (RX1 and RX2) to -108 if there is no combiner or TMA in my case i have combiner so i increase the value by losing jumper connections at RRU12 end and make VSWR high it automatically increase the RSSI Value Now i Have Cell RX1(dBm) RX2(dBm) Delta TrDevices ================================================== ============================= ===================== ================ S1C1 -102.2 -101.8 0.4 *1-1/RRUW-1/1 *1-1/RRUW-1/2 S1C2 -100.1 -100.2 0.1 *1-1/RRUW-1/3 *1-1/RRUW-1/4 hope it will help
