What is the difference between Rx Lev Full and Rx Lev Sub ? What you mean by Link Budget? Can you explain ?

Answer : RX Lev Full means Mobile transmit the measurement…

RX Lev Full :

  • RX Lev Full means Mobile transmit the measurement report(SACCH multiframe) for every 480ms.
  • This multiframe containes 104 TDMA frames, in 104 TDMA frames 4 TDMA frames for Decode the BSIC and remaining 100 TDMA frames for Average measurment of serving cell and neighbouring cell.
  • This average measurment of 100 TDMA frames are RX Lev Full.

RX Lev Sub :

  • DTX is a discontinuous trasmission, When the mobile conversation 40% of the time either Transmitter or Receive is idle. When DTX is ON, DTX will switch off the Transmitter or Receiver when they is no speech Pulses.
  • Only few TDMA frames will transmit, the average of this TDMA frames is called RX Lev Sub, give you proper measurement of RX level.
  • A link budget is accounting of all of the gains and losses from the transmitter, through the medium (free space, cable, waveguide, fiber, etc.) to the receiver in a telecommunication system.
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