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Estimated time of 800 mhz rollout?


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Robert - one question -- were you using a standard PRL or maybe one that might have favored 800 for some reason???

When you think about it' date=' using 800 when idle is a great way to have maximum bars showing on the handset. Will make the users say "WOW" after years of seeing one bar or less.[/quote']

 

Standard PRL. 25006. If I used any other PRL I had, it stayed on 1900 and I couldn't get LTE.

 

Robert via CM9 Kindle Fire using Forum Runner

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Care to explain any further? I thought on a CDMA network the handset always was in control of which sector it was connected to?

 

Sure. I will try to keep the explanation brief in this post. If you would like a more detailed explanation, though, let me know.

 

An idle state handset hashes to a particular CDMA1X carrier (e.g. PCS 0050, CEL 0283, SMR 476, etc.), then sleeps and monitors the paging channel every few seconds on the PN (i.e. sector) with the best Ec/Io. This typically requires no network intervention, other than the initial registration and periodic registrations thereafter.

 

A traffic state handset has a traffic channel set up on a particular CDMA1X carrier. The network selects the CDMA1X carrier based upon loading. While in traffic state on that CDMA1X carrier, the handset can measure the Ec/Io of other PNs, but only on that CDMA1X carrier. If a certain PN meets established Ec/Io criteria, then the handset can request that it be added to its active set (i.e. soft/softer handoff).

 

What is relevant to this 800/1900 MHz discussion, however, is inter frequency handoff (i.e. hard handoff). Since CDMA1X is a continuously transmitted (i.e not time slotted) airlink, a traffic state handset has no downtime in which to measure the Ec/Io of PNs on other CDMA1X carriers. So, just as the network chose the CDMA1X carrier on which to set up the traffic channel, only the network can dictate an inter frequency hard handoff to a traffic channel on a different CDMA1X carrier (e.g. PCS 0050 to SMR 476).

 

AJ

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I thought this would be a good place to ask this. I keep getting two different answers to how LTE 800 is being installed. On one hand I hear just adding another RRU but on the bottom of the panel I only see six connectors ( I'm guessing two for LTE 1900, 1xA 800, and evdo) would they have to add another panel to install LTE 800?

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Sure. I will try to keep the explanation brief in this post. If you would like a more detailed explanation, though, let me know.

 

An idle state handset hashes to a particular CDMA1X carrier (e.g. PCS 0050, CEL 0283, SMR 476, etc.), then sleeps and monitors the paging channel every few seconds on the PN (i.e. sector) with the best Ec/Io. This typically requires no network intervention, other than the initial registration and periodic registrations thereafter.

 

A traffic state handset has a traffic channel set up on a particular CDMA1X carrier. The network selects the CDMA1X carrier based upon loading. While in traffic state on that CDMA1X carrier, the handset can measure the Ec/Io of other PNs, but only on that CDMA1X carrier. If a certain PN meets established Ec/Io criteria, then the handset can request that it be added to its active set (i.e. soft/softer handoff).

 

What is relevant to this 800/1900 MHz discussion, however, is inter frequency handoff (i.e. hard handoff). Since CDMA1X is a continuously transmitted (i.e not time slotted) airlink, a traffic state handset has no downtime in which to measure the Ec/Io of PNs on other CDMA1X carriers. So, just as the network chose the CDMA1X carrier on which to set up the traffic channel, only the network can dictate an inter frequency hard handoff to a traffic channel on a different CDMA1X carrier (e.g. PCS 0050 to SMR 476).

 

AJ

 

So let's use a real world example here... Let's say that the network dictates a 1900mhz carrier and you travel to an area where that signal begins to fade and realisticaly, you need to be moved to the lower frequency carrier. How does the network "know" this move needs to be made? I guess really this is the exact same question asked above. I suppose this may have something to do with why they default users to the 800mhz carrier?

 

Also, Verizon currently has 1x on 850mhz Cellular and 1900mhz PCS, correct? So they must be using this functionality as well?

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So let's use a real world example here... Let's say that the network dictates a 1900mhz carrier and you travel to an area where that signal begins to fade and realisticaly, you need to be moved to the lower frequency carrier. How does the network "know" this move needs to be made?

 

One of the disadvantages of the CDMA1X airlink is that the network does not always "know" exactly when an inter frequency hard handoff needs to be made. From the handset Ec/Io reports, the network can see that the traffic channel is fading and soon to drop. The inter frequency hard handoff is a last resort -- a break before make and hope for the best leap between traffic channels on different CDMA1X carriers.

 

AJ

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Psychology. Sprint could even use the slogan "More Bars in More Places."

 

;)

 

AJ

Oh, the Nextel crowd is going to love it. It seems that they still believe they can only make phone calls with full bars, even through Sprint works just fine down to around -103. They don't even try, and then complain.

 

The downside to this will be, people will now be saying "Well, I have full bars, why aren't my internet speeds fast!? It says 3G!" (you know, since Sprint decided all 4G phones no longer display 1X in the signal bar)

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I thought this would be a good place to ask this. I keep getting two different answers to how LTE 800 is being installed. On one hand I hear just adding another RRU but on the bottom of the panel I only see six connectors ( I'm guessing two for LTE 1900, 1xA 800, and evdo) would they have to add another panel to install LTE 800?

 

An additional panel is not necessary. The 800 antenna in the center of an NV panel can run the CDMA and LTE on it. Each panel can handle up to four RRU's. Each RRU can handle up to four carriers. When you exceed that, then you need a second panel. A second panel is not common at NV sites. Only really, really busy sites with lots of carriers need a second panel.

 

Robert

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Wonder if CDMA 800 is deployed in my suburb of Chicago. I can go anywhere including basements and hold a decent call and have at least one bar. In Chicago I still go in buildings and pretty much lose everything, go in a basement and it either roams or says no service.

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Wonder if CDMA 800 is deployed in my suburb of Chicago. I can go anywhere including basements and hold a decent call and have at least one bar. In Chicago I still go in buildings and pretty much lose everything' date=' go in a basement and it either roams or says no service.[/quote']

 

In our Sponsor maps we show all the sites that have CDMA 800 deployed to date.

 

Robert via Samsung Galaxy S-III 32GB using Forum Runner

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Just made a donation as well!

 

OK. You can disregard my email to you. I wasn't sure what screen name the donation belonged to. Mystery solved. You are now upgraded. Thanks for supporting S4GRU.

 

Robert via CM9 Kindle Fire using Forum Runner

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I actually had it at one point but for some reason I got frequent drop outs. Not sure why, I bought a fairly nice kit. Didn't use it much after that, it might be better now though.

 

Sunspots... We are heading into a new solar storm cycle so there may be increased satellite signal degradation to a certain extent (OR SO THEY SAY)

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So I live in Northwest Indiana (one of Sprints most advanced NV area's). I just discovered today that CDMA 800 is apparently already deployed! (the coverage maps aren't showing it yet) My phone has been showing band class 10, channel 476 constantly. driving south on route 41 then heading east on route 30 I stay on CDMA 800 constantly. Also around Munster too.

I was wondering why my indoor coverage has been so good! in my home office I stay right at -70 to -76 db all day long. Even in the basement I keep a strong signal.

 

I do see that EVDO is still on 1900 at the same time. I haven't read it plain and clear anywhere, is EVDO ever gonna get to use 800 as well?

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So I live in Northwest Indiana (one of Sprints most advanced NV area's). I just discovered today that CDMA 800 is apparently already deployed! (the coverage maps aren't showing it yet) My phone has been showing band class 10, channel 476 constantly. driving south on route 41 then heading east on route 30 I stay on CDMA 800 constantly. Also around Munster too.

I was wondering why my indoor coverage has been so good! in my home office I stay right at -70 to -76 db all day long. Even in the basement I keep a strong signal.

 

I do see that EVDO is still on 1900 at the same time. I haven't read it plain and clear anywhere, is EVDO ever gonna get to use 800 as well?

 

no.

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I do see that EVDO is still on 1900 at the same time. I haven't read it plain and clear anywhere, is EVDO ever gonna get to use 800 as well?

 

No. Sprint does not have enough SMR 800 MHz bandwidth to run CDMA1X, EV-DO, and LTE all concurrently. Sprint has no plans for EV-DO 800.

 

Your CDMA1X 800 report, though, is much appreciated. Thanks...

 

AJ

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I do see that EVDO is still on 1900 at the same time. I haven't read it plain and clear anywhere, is EVDO ever gonna get to use 800 as well?

 

Short answer: No.

 

Long answer: Sprint only has enough spectrum for a single 1x carrier plus, depending on other iDEN providers in the area, up to 5x5 of LTE in SMR. Any EvDO in SMR would take away from LTE capacity, so Sprint won't be deploying EvDO in SMR.

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Nice to see the 800smr reports again. Been a long time since we have seen them. Wish we would have seen some out of DFW by now as that's the other market that is active in the PRL.

 

Sent from my C64 w/Epyx FastLoad cartridge

 

 

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No. Sprint does not have enough SMR 800 MHz bandwidth to run CDMA1X, EV-DO, and LTE all concurrently. Sprint has no plans for EV-DO 800.

 

Your CDMA1X 800 report, though, is much appreciated. Thanks...

 

AJ

 

Got it everyone thanks! That's what I thought I had read but information about everything is so scattered it would take me forever to find the one sentence stating just that.

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Nice to see the 800smr reports again. Been a long time since we have seen them. Wish we would have seen some out of DFW by now as that's the other market that is active in the PRL.

 

Sent from my C64 w/Epyx FastLoad cartridge

 

I think the only reason Dallas is in the PRL is because of the Waco FIT sites having CDMA 800 deployed.

 

Robert

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In Chicago today in the Bridgeport neighborhood (white sox/US Cellular field) I checked with my little bit of extra knowledge about what channels/band class to look for, and all I had was Band class 1/1900. My service still stinks inside those brick buildings.

 

I roamed half the time I was in my mom's shop for a Halloween party....As soon as I step outside voila! perfect signal AND LTE! Bridgeport around Sox park seems to be well blanketed it in within the past few weeks....which is awesome! 3G is USELESS over there.

 

On another related note, I checked my GS3 again as soon as I came home and it's locked into band class 1. I'm gonna take a guess and assume that's because I still receive a relatively strong signal in my house and it doesn't see any reason to switch over just yet? I'm sure it's more complicated then that but I must be close. I'm sure if I reboot the phone it may switch back to CDMA 800. I just wonder how it will decide automatically when to.

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Much confusion. :wacko: Can someone please post a link to some sort of description of Sprint's current and future spectrum usage, and which phones use what is operating now. I'm sure it's out there somewhere, so no need to clutter up this thread with repetitive redundancy. Thanks in advance.

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Much confusion. <img src='http://s4gru.com/public/style_emoticons/<#EMO_DIR#>/wacko.png' class='bbc_emoticon' alt=':wacko:' /> Can someone please post a link to some sort of description of Sprint's current and future spectrum usage, and which phones use what is operating now. I'm sure it's out there somewhere, so no need to clutter up this thread with repetitive redundancy. Thanks in advance.
<br /><br />1900 pcs - Currently 1x, EV-DO and LTE<br /><br />2.5~2.7 GHZ BRS - Currently WiMax, LTE in the future<br /><br />800 SMR - Currently iden with pockets of 1x in the Chicago area and texas, in the future LTE and 1x.<br /><br />2 klatapaT gnisu III S yxalaG gnusmaS ym morf tnes<br /><br /><br />
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