To: Rajala who wrote (17183 ) 10/26/1998 11:14:00 AM From: engineer Respond to of 152472
Rajala, You keep mixing some terms which are not generic and not indicative of what your trying to say. I re-read all your posts the other day and I can see the arguments your trying to make, but then you confuse even yourself with terms like CDMA1 and WLL being different. There is a WLL market, which can be served by many differnt technologies, once of them is CDMAOne. This was the point I was making the other day. Seems you can't stop pontificating long enough to even read when people are trying to have a real conversation with you and perhaps help you with the correct technical terms so that you can hold a meaningful conversation. Your rants about signalling are so far off base, it is hard to reposnd with a corrected technical response. I can see that you don;t understand the technology and are trying to reason through what you can understand, but it is not signalling, it is coding theory which is making the difference. Since, somehow you took a more personal attack on me, I sat back and let a few of the other technical people on the thread give you advice as to where to look for information (Clark, Sanjay..) CDMAOne can have either WLL or mobile on it, or both. It is not a black and white decision. You can have goverment subsidized cheap fixed phones which raise the density of the cells and make the cost go down and at the same time have mobiles. Just a matter of cost and charges... in terms of the mixed system, it is possible to regulate the cost by charging one cost for a fixed house wiring type phone (QCT-6200) and another price for a mobile (QCP-820). Then let the user roam if they want to, because they will pay for the extra resources that it takes. The phones report their type to the carrier when they register with the network. Here is a test for you. Take your present phone bill, if your in the US..calculate your minutes of use and divide this into your monthly rate without long distance in there....then compare this to the Sprint $0.10 a minute anytime anywhere, no raoming charges. then look at if they even got 20% better, it would be at $0.08 cents a minute. In my case, it was $0.055 per minute (5.5 cents), so Sprint would not have to come very far off the mobile anytime anywhere rate to meet my WLL expectations (i.e. it cost no more than my home phone today). My main point is that your arguments were based on alot of old GSM problems, such as no ability to microcell, no real advantage from fixed to mobile or mobile to fixed. There is an economic advantage to using CDMAOne in a WLL application (note the use of a subset in a larger class here..) and when applied here it does give advantages. It hard to pin an exact x3, x4, x5,x6 for exactly the reasons you cite. The WLL systems out there today have not been mandated to be fixed wireless only. If the carrier were to limit the ssytem this way and make the market fixed only, then they would get a great advantage. WLL is also not just for some third world countries, it can be an advantage in the US. Hard to service areas, such as very low income neighborhoods in the inner city, hard to get started areas such as farms in the midwest are good examples of areas which the carriers have looked at. In these situations, the carrier finds it more cost effective to provide a wireless solution that a wired solution and the extra costs make it cheaper. I would love to have a real fact based argument with you on this, but I think this horse is dead at this point. If you want to read some things on CDMA, suggest that you sign on to the CDG.ORG site and read the technical discussions by Art Ross. Pretty good start there. If you need any help understanding them, send me a message and I will try to explain it. (www.cdg.org). (I don;t have an engineer hat, but I do have to search around to find my pocket pack which has my pens, pencils, and my eyeglasses in it so that I can find my way over to the PC in the morning to type this stuff to you.....(8^)..