In TCH interval grouping, the three cells of the same BTS use the same HSN while different BTS use different HSN, and different MAIO are used by carriers in the same layer of the same BTS. The HSN of BTS A is 1, the MAIO of two carriers TCH1 and TCH2 in Group 1 cell … Read more
When mobile has been selected successfully the mobile now will start reselection tasks. Perform Cell reselection measurement first Mobile will continuously make measurements on its neighboring cells (as indicated by the BA list) to initiate cell reselection if necessary. At least 5 measurement sample per neighboring cell is needed. A running average of the received … Read more
Cyclic vs. Random Hopping Sequences Both cyclic and random hopping modes are available in GSM. In the cyclic mode the frequencies are changed sequentially from the lowest frequency to the highest as defined in the MA-list. In random mode the frequency to be used for each burst is selected from the MA-list by a predefined … Read more
Drive test is simply test of coverage for radiating BTS . from drive test you can imagine BTS coverage boundary and foot print of bad coverage and good coverage.lets understand dt basic. Drive Test Plan Each drive route should be marked on a detailed road map showing the exact route to be driven. These maps … Read more
INTRODUCTION Predesign drive test for measurement integration This is at beginning of design when no site has been built or even selected. All test sites are temporary. Drive test is performed mostly for characterization of propagation and fading effects in the channel. The object is to collect field data to optimize and adjust the … Read more
Receiver sensitivity is the ability of the receiver to receive signals in the sense that any signal below the sensitivity is considered as noise and is not usable. Receiver sensitivity is given by S = Antenna Noise (dBm) + Receiver Noise Figure (dB) + C/N (dB) S = the receivers sensitivity C/N = Carrier to … Read more