Radio Test Measurements 1
The screen image (Radio Test Measurements 1) represents the output results of radio coverage detected at the receiver (mobile telephone) and represent a single static view of that coverage at one instance. During cell site analysis there will be many screens obtained but for the purposes of this discussion this single screen image will do the job. Firstly, the reader will need to comprehend, at least, an interpretation that can be given to the identifiers in the screen image above.
1. Chan: this indicator refers to the Broadcast Control Channel number.
2. RxLv: this indicator refers to the received strength of signal at the test handset measured in deciBel milliwatts, (dBm), where dBm is the notion for the measurement of power of the received radio signal e.g -75dBm.
3. C1: this is a quality indicator (path loss criterion) and is used for cell selection and cell reselection. The parameters are determined from the signal strength, the minimum received power levels for initiation of signals between the mobile and network, the maximum transmit power for accessing the network and the power of the mobile phone itself.
4. C2: this is an indicator used only for cell reselection optimisation and identifies parameters to aid the mobile phone in its cell reselection process.
5. 'ACT' denotes the strongest, thus dominant, serving cell coverage at that location providing the best quality associated with the BCCH number (Chan). Meaning the mobile telephone has completed the cell selection/reselection processes for normal service and has chosen a cell from which it plans to receive all available services (known as "camping on a cell").
6. 'NC2-NC6' denotes other cells available in an area that may equally offer service, but that the mobile phone has not camped upon them. However, the mobile network is aware that the mobile phone has choices available to it. Displayed beside the NCs are the cells, identified by their respective Broadcast Control Channel (BCCH) numbers.
For more on Cell Site Analysis, see Cell Site Analysis Part 1.