I don't know anything about the # of simultaneous phone calls per cell site. Is there anyone else on this thread with the technical know-how who can address this issue? Let's see, you say 3000 simultaneous phone conversations is max per cell site. IOW 6000 people. Now is that analog or 3:1 iDEN tdma?
The 3:1 ratio is marketing BS. It's 25MHz/64Kpbs per half-duplex channel. Take a look at:
mot.com
and if you have any questions, I may be able to answer them.
But for now let's take your numbers. NXTL had 2,400 cell sites in June and they have 3,600 more planned. (Of those, as of June 3,050 were already zoned and 3,300 were leased.) Again as of June, they expected to have 4,500 cell sites by the end of 1998. Those numbers have probably increased since then. In other words, by the end of 1998, NXTL will have a theoretical limit of 13,500,000 simultaneous calls if all cell sites are maxed out. When all 6,000 cell sites are installed, the max increases to 18 million.
Yes, 18M full-duplex would be the theoretical max. However, the actual capacity will not exceed the max capacity in densely populated areas. I mean, one should have to leave town to make a cellphone call.
It all comes down to the cell site's min area of coverage vs. max population density.
PTB |
