A network facing coverage problems has bad RxLev. RxQual can be bad at the same time. Sometimes the RxLev can look OK on the street (i.e. from drivete...
Bookkeeping Coverage. If you plan to take the certification exam, you can study on your own. Just follow the guidelines in terms of coverage.
Constitutional law 2 coverageFull description
Coverage evaluations in Tunnels
UMTS COVERAGE ESTIMATION
2G Coverage
Huawei tunnel coverage
I. Coverage Problem Bad coverage : A network facing coverage problems has bad RxLev. RxQual can be bad at the same time. Sometimes the RxLev can look OK on the street (i.e. from drivetest) but coverage inside the buildings can be poor due to building losses. Building losses can range from 10 to 30 dB or more. Indications : • Customers complain about dropped calls and/or “No Network” • OMC QoS indicators – TCH failure rate – Call drop rate – Low proportion of better cell HO – High rate of DL & UL Level HO (possibly also DL/UL quality HO) • A interface indicators – High rate of Clear Request message, cause radio interface failure • Drive Test – Poor RxLev ( < -95 dBm) Investigation and Optimization : • If actual coverage OK compared to predicted ones – Improve coverage by adding Macro site, Microcell site (Border or Shadow areas), or IBC site (In-building coverage). – Use parameter setting ex. Bi-layer Handover. • If actual coverage is not the one predicted by planning tool – Check antenna system (azimuth, crossed sector?) – Check prediction in the tool (EIRP, Clutter Type, Obstructing building?). Most of the time the prediction will be incorrect, as it is only a computer simulation – Increase or decrease antenna down-tilt – Check BTS output power set in the OMC-R (BS_TXPWR_MAX: should always be set at 0) From Drive test or Abis Interface – RxLev < -95 dBm and
