GSM:DRIVE TEST JOB INTERVIEW QUESTIONS

1.Define GSM, C/I , SQI, RxQual, RxLevel, BER,BSIC, AMR, C1 & C2, CEFR, CSSR, RSSI,FER, IMSI attached procedure, MOC & MTC, GGSN & SGSN, BSS, NSS, HLR & VLR, E1 & T1, EIR & AuC, BSC, BTS/RBS, GPRS and EDGE, BCCH, LAC and Cell File etc.
2. How does RxQual relate to BER?
3. What is the frequency ranges of GSM 900 and DCS 1800?
4. Why the uplink frequencies are smaller than downlink?
5. What are the characteristics of Radio frequencies?
6. What are the logical channels used between MS and BTS?
7. What is SDCCH doing during the call establishment?
8. What is Co-Channel interference?
9. What is interference?
10. What is the difference between BER-Full and BER-Sub?
11. Why do we prefer SQI over RxQual?
12. What can be the reasons of a Call drop?
13. What are counters? Why do we need them?
14. What is cell-reselection?
15. Why do we make “short calls” and “long calls” during drive test?
16. Explain call setup, MS registered and Handover (Ho) procedures!
17. What makes GPRS technology different from traditional GSM?
18. How many channels used in GSM .Explain each?
19. Define Timing Advance? Handover failures other than Co-Bcch and Neighbor, difference of RX full and Sub, Multiple coverage and Call muting.