caspar347
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Everything posted by caspar347
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Definite no for Verizon B13. I think it also requires a site visit on old AT&T sites, but I could be wrong on that. (I'm guessing their original RRUs from the original B17 rollout might not be able to handle it?) Not sure about the rest. And Sprint is still at an advantage because nobody else can run two 3xCA chains on their equipment even if they had the spectrum for it. -
It's gonna be the faux-G HSPA fiasco all over again, isn't it. I wonder who will dare to be the first to actually "launch" and label on phone status bars a non-standardized tech as 5G. Last time it was AT&T, right?
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Think of it like this: There could be up to six 82mbps pipes. But phones can only use three of them at a time. The advantage of this over just three 82mbps pipes (basically what AT&T is doing but with 75mbps pipes) is you can have one user on three pipes and another user on the other three pipes and their data use wouldn't impact each other. This makes Sprint's setup more reliable and consistent. Also: Tim's post above this one is a great explanation of why real world speeds will be very different from the theoretical maximums, especially for AT&T.
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Theoretical max for a single 10x10 is roughly 75 IIRC. So three of those would be about 225. Which is close to but slightly below the theoretical max of 247 for Sprint's 3xCA. But those are theoretical maximums and you are unlikely to see numbers that high during a normal day. But it is worth noting that in some cities Sprint will have 2 3xCA chains running long-term, so even though the theoretical max of 247 stays the same you would be more likely to hit it with Sprint than AT&T because the users-per-chain would be half of AT&T's (all other factors aside). But that's an oversimplification since Sprint and AT&T have different amounts of customers from city-to-city. Edit: forgot to mention Sprint might change the TDD ratios at some point which could put the theoretical max for 3xCA higher or lower than it is now. IIRC the commonly cited "capacity" configuration raises the theoretical max from 82 to about 110. AT&T does not have that option.
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Awesome article! So I gather the plan is shifting from "get a second 5x5 up where we can" to "swap for C5 and widen the existing 5x5 to a 10x10 where we can"? Does this mean we may see some markets become 10x10-only? I can think of some cases where Sprint could squeeze in an extra couple of CDMA carriers with a contiguous 30Mhz vs a non-contiguous 30Mhz with two 5x5s if I'm doing my math right. And that could make all the difference in some markets.
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Didn't know about the low-band AIR21s. Cool stuff. Looking at T4GRU it looks like they're just slightly longer AIRs? I'll have to keep an eye out.
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Hmm. If they snagged all of the Cavalier, they're gonna be able to seriously compete in Charlotte and NC in general. They already have fantastic site density (they are very spectrum-constrained in Charlotte, 10Mhz FDD in PCS and 15Mhz FDD in AWS with no room to grow) and continue to add sites for capacity in areas seeing development. Downside might be permitting. All of their racks appear specifically fit to hold two AIRs and nothing else, so most sites would require entirely new racks for a new 700 antenna.
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Random feature idea that popped into my head: option to automatically turn on the location service only when connected to a new GCI/site. And when strongest_RSRP/RSSI for the connected site is more than 5dBm stronger than the previous recorded entry the app could temporarily enable location for a set (but adjustable) minimum amount of time to allow for an accurate lock. Could save battery life significantly by keeping location off while a user is connected to their usual sites but still maintain very high log accuracy and capture new sites etc. You could even make the dBm cutoff adjustable. I don't know if something like this is feasible but it would be pretty cool.
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8X8 LTE Base Stations
caspar347 replied to Colton123's topic in Network, Network Vision/LTE Deployment
No new visible basestation equipment is needed for 41. All of the new gear (i.e. carrier cards) fits inside the existing cabinets. ALU: Samsung: Ericsson/Nokia: (All images come from the equipment spotting threads) Not sure which is best. I think general consensus is Nokia is best overall. -
I almost said something about that yesterday. Is it possible this is being done to minimize possible future disruption related to EBS licenseholder shenanigans? IIRC looking at the map, Sprint owns enough BRS in most places to be plenty well off without EBS should future lease disputes arise. For example they could still run three 20mhz carriers in owned BRS alone in Charlotte.
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Sprint Super Bowl Coverage/DAS
caspar347 replied to RedSpark's topic in Network, Network Vision/LTE Deployment
By the same token most of them probably have the latest phones capable of using all bands on all carriers. So no performance excuses there. -
I've always been fascinated by the concept, but when I look at the logistics I always come to the conclusion that while it would be an insanely awesome project it would ultimately be more expensive and slower than available wired internet in my area and all surrounding areas. I guess it comes down to the fundamental drawbacks of wireless vs wired: unpredictable environment factors, increased overhead, and overall lower peak speeds. At least I'm very familiar with Ubiquiti's product catalog as a result. But I've always loved stories like this about it actually working and being relatively cost-effective.
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I'm pretty sure in theory everything should be OK as long as you don't change any settings on Sprint's website related to the SIM or line while it's inactive. And you do a "network settings update" or whatever it's called in the 5X's carrier settings whenever you swap.
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They've been leaving one of the two high-band antennas per sector here disconnected on new sites. I guess it's for eventual PCS LTE maybe? They only own 10x10 PCS here but they own both CLR A and B so maybe they're relegating remaining CDMA to CLR. I don't know. But again I'm in a different vendor zone so I can't help much with OP's questions unfortunately.
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Awesome. I've never actually gotten to see VZ ALU gear in person. And nice rendering of AT&T's logo.
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Out of curiosity, which vendor is Verizon using there? I don't see any of Ericsson's distinctive RRUs, but it might just be the photo angles. Is that an ALU area for VZ?
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Hmm. Thank goodness NYC is scheduled to go off ASAP. I hope Sprint can get the 2xCA switches flipped on all the dual-mode sites within a few days. Sucks Charlotte has to wait another month, but we won't really benefit (i.e. none of our dual-mode WiMAX sites are overloaded so 2nd carrier on those isn't critical at the moment) until they start doing LTE swaps on WiMAX-only sites which is probably still a ways off anyway.
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I'm in a Verizon-Ericsson vendor zone, so YMMV if you're in another vendor zone for them. Basically all of their sites here have had 4 antennas per sector for as long as I've been posting on this forum. Old setups have a tall fat one, a tall thin one, a short fat one (usually an AIR), and a short thin one. They seem to be in the process of swapping out all of the AIRs with RRU'd antennas for whatever reason. I've also seen them replace both old tall antennas with identical tall fat ones, but I think that's a special case thing since I've only seen a couple sites like that. Their brand new setups on new macro sites have two identical tall fat ones and two identical short fat ones with only one of the short ones hooked up to RRUs. I have pictures of all of these setups in the OP of the Charlotte premier thread (link in my signature). Any idea who their vendor is for your area? If the new antennas are tall they're probably for 850 and 700. Did they recently acquire more low-band in your area?
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Alright then. *snip* (decided to PM. If anyone wants to check it out on the sponsor maps it's the 3G site in south-central suburban Charlotte.) Covers the strip mall it's on top of plus the one to the southeast. And all the surrounding houses and apartments obviously.
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Not sure I can indicate a site's status outside the sponsor forums. I can PM it to you if you want. Or if a staff member says it's OK I can post it here. And there are actually two such sites on my end of the city but one of them is pretty close to a working LTE site so it's not quite as overloaded.
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I can think of a 3G GMO smack in the middle of a high-density suburb with apartments and a couple of strip malls that times out no matter what time of day it is that might be on the list at some point down the line. None of the equipment is technically broken (the phone is still sending and receiving data according to engineering screens) but it straight-up doesn't work. Sprint Zone reports don't even send while connected to the site. I'd imagine they are working down the list of sites like that by order of dropped calls since that's the metric they focus on the most. Fixing what we call NV problem sites. At least I hope so.
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Yep. We've got tomorrow off too even though there's barely anything left on the ground, much less the roads. Oh well.
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Did anyone else get a network-initiated profile update at 11pm est?
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...aaaaand school is cancelled before we even see precipitation. Better than at 5am tomorrow I guess.
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It's gonna be great. We'll get maybe half an inch or so and the entire city will shut down for a week. At least I might get out of school for a couple days. To everyone north of us: stay safe!
