Silicon Investor (SI) -- The First Internet Community

STOCKTALK

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor. We ask that you disable ad blocking while on Silicon Investor in the best interests of our community. If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.

Strategies & Market Trends : Booms, Busts, and Recoveries -- Ignore unavailable to you. Want to Upgrade?

To: Maurice Winn who wrote (59366)	1/25/2005 7:51:57 AM
From: elmatador	Read Replies (1) \| Respond to of 74559

lhuber is trying to say to you that, making a connection from all those BTS's to hubs, and from hubs to the matrix or head end of MSC whatever one should call it, it is not yet factored in. Yes, CDMA has taken care of the air interface. Yes, mobile handsets to make use of the applications are appearing and at will be affordable Yes; the technology is already tried and tested in real networks. No one would dispute that. Now seat back relax and look to the architecture of a network of say: 400 BTS across a modern city. I would tell you that, I would need a few PDH links at the fringes. Then I will concentrated all those 2MBit/s streams into a remote hub from there I would load them up into SDH microwave links into a hub. From those hubs I will load the traffic into SDH fiber strait to the MSC. But I would need to make a ring of remote hubs part over fiber part over microwave to protect the traffic. I also would need to interconnect my back bone (the links in between the hubs and the MSC /matrix. That's my canvas. I can come out with a USD figure of how much is going to cost. (NOTE: I didn’t include any ATM not to complicate things further) Yes there is a lot of fiber there but it is not mine for the taking. Railway, municipality, Telco, electric utility, train ways etc) I need to sign a service level agreement with each one of them and some of them will force me to use their facilities and not lease dry fiber and this thing is not that easy or fast. There are several spurs of new fiber that I have to lay in order to make a logical connection of all those disparate length of fiber. Then I'd need to lay a few spurs of fiber to reach where my BTS is located. I need to get the city to give me right of way, deposit money to guarantee I don't screw up roads works, and local government are not used to work on the speed required for a Telco deployment. Then I go to my CTO and present my strategy to build the backhaul. He's not going to accept it. He'll tell me to go back to the drawing board and come up with a backhaul that is deployed fast, and into which fiber can penetrate towards the fringes in the network in the future. I tell him OK, I will give you 1x2Mbiy/s per BTS do it with cheap PDH links and only a few SDH links connecting the main hubs. He'll tell me to do what we have been doing all along. Just building with limited capacity. Next I will tell you why is that...

To: Maurice Winn who wrote (59366)	1/25/2005 11:43:24 AM
From: Ihubber	Read Replies (2) \| Respond to of 74559

MQ, Tell it to Verizon. From their web site: PC 5220 card is not voice capable. BroadbandAccess capable device required. One- or two-year Customer Agreement required. *Check with your IT department regarding intranet access requirements. ^ Maximum possible speed varies. It declines with distance from cell site and is limited to 1.54 Mbps at certain cell sites with backhaul limitations. Number of users on the Verizon Wireless BroadbandAccess network may also affect maximum possible speed. Average upload speeds expected to be between 40-60 Kbps. verizonwireless.comBottom%20Nav*For%20Business%20-%20Broadband%20Access By the time there is Fiber to all the base stations for the rquired backhaul bandwidth required "Do" will be obsolute as we have moved on to something different.... Are you sure you never worked selling used cars?<G> I see absolutely no benfit to 1xev-do over WCDMA, in fact once again we will have the situation where Qcoms CDMA versions will not be widely deployed and will be in a niche market compared to the rest if the world. One more time, Backhaul is the limiting speed/pricing factor, not the air interface. Any discussions of air interfaces is mostly West coast FUD from my observations. Of course your mileage may varey and likely will.