In drive test you test downlink measurements and what the user can do with his mobile oe usb modem (hand set) we called it UE (user equipment)
ingeneral
: The main purpose for site integration drive test is to:
check the site coverage, site performance, neighbor relation, frequency
interference, and the quality of service for this site after getting it on air.
tools should be with engineer DT:
Tems software.
• Tems Kit.
1-Tems License (Dongol).
visit our facebook account
2- Mobile equipments
TEMS C702 termina
TEMS pocket w995a
3- GPS.
visit our facebook account
4- External hub (if needed).
5- Updated cell file and Frequency plan (FP).
6- Inverter.
The inverter is used to charge the laptop &the mobile equipments .
visit our facebook account
CAR
.jpg)
SURE THAT NOT THIS CAR :)
We will explain in another article how to install Tems ,Map-info,Actix on your pc
NOW TYPES OF DRIVE TEST:
Cluster.
Single Site Verification.
Benchmarking.
Special Tests:
1- Scanning. 6- Indoor.
2- National Roaming. 7-Auditing.
3- International Roaming. 8- Locking on certain BCCH’s&SC’s
4- Main Roads. 9- Tracing calls using TMSI or IMSI
5- Adjusting Tilts & Azimuth. 10- Specified Tests.
Several functions of drive test :
- Analyzing customer complaint of certain operator in their home or office area
- Finding problem in BTS ( Timeslot Check, TRX Check, Swap Feeder)
- Analyzing the result of optimization process (continuity and all of area).
-----------------------------------------------------------------------------------------------------------
Cluster:
This test is mainly achieved using two mobiles for 2G&3G.
For checking retainability the command sequence is adjusted as follow:
- infinity number of minutes.
- call wait 10 to 15 sec.
For checking accessability the command sequence is adjusted as follow:
- 2 minutes per call.
- call wait 10 to 15 sec.
Single Site Verification:
There are two kinds of single site verification tests:
2G verification.
- Checking the handover between the sectors of the site.
- Checking the handover (in & out) with the neighbors of the site.
- Checking the coverage of each sector.
- Checking cross feeder.
-Checking the capability to access on the internet
-Checking the capability to download files to view the GPRS rate. (Optional)
3G verification .
-Checking the coverage of each sector.
-Checking cross feeder.
-Checking the video call establishment under the site (locking on 3G).
-Checking cell reselections from 2G to 3G under the site (idle mode).
-Checking cell reselections from 3G to 2G with attenuation (idle mode).
-Checking handover circuit switch (CS session) by locking on normal mode 1st
then make a voice call ,attenuate till the RAT handover is achieved from 3G to 2G.
-Checking handover packet switch (PS session) by locking on normal mode 1st
then log on the internet ,attenuate till handover occurs from 3G to GPRS.
The command sequence is usually adjusted as 2min per call and 15sec. Call wait
to check both accessability & retainability.
You must call the NOC before doing the test to check if the site is locked or alarmed.
Benchmarking:
This test is achieved by using 3 mobiles one for each operator.
The main aim of this test is to compare between the performance of each operator.
The command sequence is adjusted as explained before in the cluster test.
The route of this test is decided by the Team Leader.
Coming in other parts
Install tems, actix,mapinfo
explain in detailed Drive Test Problems
a lot of surprises :) to be professional engineer
visit our facebook account
0 comments:
Post a Comment