We know that the cellular "A" and "B" bands were created waaaaay back in the analog days and when the current level of providers did not exist. Then, in the '90s the feds had to open up the PCS band to provide new capacity for more carriers. We all know that 1900 MHz is inferior as far as reach goes. Hence, operators in 800 MHz band arguably have an advantage in that respect. We also have the upcoming phase-out of analog freeing up more 800 MHz for digital use. So, how about this for a flame-inducing proposal: The FCC should reallocate the 800 and 1900 bands among ALL the carriers so that all carriers can obtain some 800MHz spectrum. It seems to me that a combined 800/1900 systems is actually superior to an all 800 MHz system. Reason? Within any cell, the 1900 band (of which there is more frequencies available) could carry (within capacity constaints) most of the calls, thereby freeing up the 800 MHz band to handle more distant callers and callers in buildings - thus further enhancing the reach of the cell. An all 800 MHz system is a waste of valuable spectrum. It's putting it to use where not needed, and relegating 1900 MHz to uses it is not optimized for. If all carriers had both bands available I think service would improve across the board.
Think about this. Let us say for argument that Verizon has the best service. Cell bands are reallocated, Verizon service deteriorates. The worst service provider improves. What do we have now, everyone meets in the middle and we have no outstanding service. Furthermore, Gov't is now involved get ready to pay some extra money to someone.
I don't think VZW's (Alltel, etc) service would deterioriate. Just the opposite. I theorize overlaying 1900 with a 800 system would improve the 800 performance. As it stands now, the industry has its allocated 800 spectrum handling calls most of which 1900 is perfectly capable of holding. Off-loading the 800 bands for these calls would enable more of the 800 band to be available for the longer reach purposes (further distace from cell, building penetration, etc), as well as additional capacity if the 1900 band is saturated. The networks would have to be designed so that a handoff between the two bands is seamless. From other posts I have read, it appears some ATTWS(?) customers have already observed this 800/1900 swapping behavior on their phones during calls (central Virginia I beleive), so it obviously is technically possible. The wireless spectrum is a limited and thus allocated resource. It only makes sense to manage it's use in the most efficient and effective manner. I do not believe current allocations accomplish that.
If it only were that easy! Your theory doesn't work for a simple reason: you can't give all carriers a chunk of the 800Mhz spectrum because there isn't enough. Even with analog removed there isn't enough for all carriers in a market. You would have to give a small insignificant chunk to each carrier which will create coverage problems because the lack of spectrum in each tower won't allow for enough towers to be in service. There's only two 25Mhz blocks in the 800Mhz band. That's a total of 50Mhz for cell service. In the 1900Mhz band, the FCC allocated 120Mhz for cell service, that's a huge difference. Also, I would like to know why you think an all 800Mhz system is a waste. In reality, it is not a waste at all. It is simply a system just like any other that needs less towers to operate than any 1900Mhz system. But it is not a waste at all.
You are overlooking the fact that there are typically 6 or so competitors in any given market, and that the allocated airwaves are captive to each carrier. I say "waste" only in the sense that the current allocations among the carriers of all frequencies in the 800 and 1900 bands is not a global "optimized" solution. For example, at any moment millions(?) of calls are placed on the 800 band (all that carrier "X" has) that could no doubt easily be handled at that moment by 1900, whereas at the same moment other calls are on the 1900 band (that is all carrier "Y" has) are being marginally handled or perhaps dropped. What I am saying is that if the bands were split up so that, on average, each carrier had 8-10MHz on the cell bands, and 20 or so MHz on the 1900 band, that would in theory offer more overall capacity so long as the networks were set to to switch between the bands on the fly during a call.
Another flaw will be each carrier will have to have additional panels on their cellsites, so on a three sector site, which generally has a send and receive panel on each sector for a total of six panels, the carrier would now need six additional panels, which in many areas with 6-8 competitors already fighting over vertical real estate it would get pretty ugly. Also for other structures such as buildings and stealth sites it would get pretty silly. You would also need to revamp the sid listings because you would need a seperate system ID for the 800 mhz and 1900 mhz for each carrier, so many of your existing phones would not be compatible with the changes, so not only would it mean replacing all of the carriers equipment but also the consumers equipment.
Well, all I know is it is working for VZW. They reportedly have 1900 overlayed on 800 systems in several places now. They are reportedly doing this in NY/NJ area now. And ATTWS is doing it as well. It is not a technical obstacle.
This seems like an awful lot of work and bringing the Government back into wireless doesn't sit right with me. They already overregulate everything as it is, we don't need them doing more and driving up costs which is ultimately what this reorganization would do. My wireless service is great the way it is, sure there are dead spots and roaming areas but you're going to get that with every carrier. What we need is an end to subsidized handsets and the development of CDMA/GSM handsets for use on all spectrums with SIM cards. That way people would get used to paying $200-$300 for a phone but they could use it with all providers and if they didn't like one provider they could just switch their SIM card out and go with Verizon or Sprint or T-Mobile, etc. The world has decided, and pretty much GSM & CDMA are the two technologies that will be used for the forseeable future... with my luck, the only phone that will incorporate these mutiple technology/multiple spectrum pipe dreams of mine is going to look something like the Curitel Identity. I guess I'll just keep using my Motorola Timeport until it eats itself or TDMA is not longer supported.
I don't think it would require additonal panels on each tower. AT&T overlayed 1900 Mhz on their 800 Mhz towers without adding new panels. But if it did require adding more panels that could be a serious problem. Many new sites being built here in So. Calif. are not in tower form (church crosses, flagpoles, unipoles, etc) and likely aren't tall enough to add more panels to. Then there are microcells and other stealthed sites which don't have panels. What would be the workaround to this?
I think what TKR was thinking (which I agree with) is that when Verizon (for example) puts up a new capacity only tower in an already well built out area they really don't need it to be a strong 800 Mhz signal. The 800 Mhz signal (which is designed to travel further and cover wider areas) would be a waste in those situations when 1900 Mhz would be sufficient. I think TKR brings up a good theory here.
Indeed, a good point. I didn't quite grasp what you were saying, TKR. Surely it would be a very complex undertaking, it's hard to tell what the outcome would be just speculating about it. We ought to comission a study.
So basically if the purpose of a new capacity only site is to provide coverage to a single block isn't it a waste to use an 800 Mhz site for that when 1900 Mhz would do just fine?
I also think an existing carrier who's network is spaced for 800, and who then faces capacity issues might only need to add 1900 to the exisitng sites. That would off load the 800 band and thereby preserve the existing coverage area while also increasing its capacity.
I think the complexity and THE COST of doing all this will overwhelm the benefits. There are better, simpler and more cost effective ways of accomplishing the same: If you need more capacity and you only have one band, all you need to do is lower the power on a cell site and add another site closeby. In other words, tighten the cell site population and accomplish tighter frequency reuse.