For each BTS, the probability corresponds to cocentric circles as in figure . When these circles cross, the area is parted in to a number of small areas resembling small squares. As the probability for each of the areas between the cocentric circles is known, the probability for the intersection of these areas can now be found. Thus the probabilities of each intersection can be found by multiplying the probabilities for each of the intersecting areas. The probability for the MS to be located within one square will then be the half of the product of the probabilities for the intersecting areas.
Figure shows the similar result for three BTSs.
The area is now broken up into a mosaic of smaller areas of different shapes, each with an assigned probability, calculated from formula . This can be accomplished by presenting the end-user to datas similar to figure , and . This requires the end-user to be capable of calculating the probabilities based on distributions for each distance. It also requires a protocol for sending this information to the end-user. This is undesirable.