Radio frequency Loss Survey & Drive Test

RF LOS Survey

we offer our services in the field of RF survey. We test for radio frequency within an electromagnetic spectrum. We also help to determine the radio wave propagation in many fields with dependency upon the use of radio frequency for optimal functioning of products, projects and service. We conduct surveys, prepare proposals for floor plans, antenna locations and layout and such other related services.

RF site survey is carried out in the following steps:

  • Collect list of Nominals to be surveyed, from the customer. In case of new town surveys where Nominals are not provided, Aster will survey the town and provide a nominal for suitable site location
  • Use the survey report template forwarded by the customer
  • Identify physical location of the proposed nominal and locate 3 candidates (maximum) for each nominal, as per search ring size suggested by the customer
  • Survey the site for RF suitability
  • Record Latitude and Longitude, building height etc. of the proposed candidates
  • Estimate and provide required GSM Antenna heights and orientation, proposed tower / pole location (s) will also be marked on a rough sketch of the building (rooftop) or ground site (for each candidate)
  • Take site photographs (360 degrees panoramic view and building / site elevation) for each candidate as given in the survey template by you
  • Record physical addresses of the candidates and site owner / manager contact details (where available)
  • Complete the Site Survey Candidate evaluation report

Line Of Site (LOS) Survey
The ultimate goal of LOS survey is to have MW connectivity between the two sites to ascertain the Line of Site clearance. The LOS survey is carried out physically checking the terrain between the hop and selecting the sites for acquisition. The survey is highly critical because any failure in LOS can lead to a delay in project and a subsequent loss on account.

LOS survey is carried out in the following steps:

  • Collect Nominal s of proposed site and those of the nearest locations to which customer proposes the LOS connectivity & Verification
  • Record latitude, longitude, building data, obstruction data and surrounding terrain data on the LOS Survey template
  • Generate LOS Path Profile for the proposed Link using Path Loss 4.0
  • Generate LOS report for the proposed Link using Path Loss 4.0.Conduct physical survey of the hop to identify any field obstructions and verify the LOS path profile

Drive Test & Network Optimization

  • Drive Test is conducted for checking coverage criteria of a cell site with RF drive test tool. The data collected by drive test tool as Log files is analyzed to evaluate various RF parameters of the network.
  • Drive Route and Site Data for the sites to be driven is taken from customer
  • Drive Test LOG File of the specified Drive Route / Site is saved and the same will be handed over to customer at the end of the day
  • DT Resource identify routine field optimization issues like cable swapping, missing neighbours’ etc., and rectify the same with the help of the customer
  • Optimization is carried out in the network to Minimize the call drop and RF interference in the network
  • Increase the indoor & outdoor coverage and better speech quality

Network Optimization Tools Used are as the following:

  • TEMS Investigation
  • Agilent E6474A
  • Neptune
  • CDMA Air Interface Tester (CAIT)
  • TEMS Desk Cat
  • Actix Analyze