IOWA
Mr. Logic Pants
Why would you prefer GSM? It is old tech. Seriously. GSM has poor voice quality, range, and load bearing power when it comes to CDMA.
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Seriously? No data connection while on the phone?
- Thread starter NullState
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Why would you prefer GSM? It is old tech. Seriously. GSM has poor voice quality, range, and load bearing power when it comes to CDMA.
When I say GSM I mean the whole line of both GSM and UMTS systems.
IOWA
Mr. Logic Pants
Umts is a variant of cdma....
No your not getting me. UMTS uses a CDMA air interface but it isn't a CDMA2000 system by any means. Don't mix those two up. GSM and UMTS are both in the same family because the 3GPP calls for UMTS to be able to hand off to GSM (usually quadband).
IOWA
Mr. Logic Pants
3GPP isnt a technology, it is a group of people... So how exactly does a group of people make two different technologies related?
The 3GPP believe it or not played a big role in GSM and UMTS development, they are the reason you have EDGE when your phone can't get 3G. In 2000 they called for the new world wide tec to have a CDMA air interface since they knew it was supieror to other air interfaces at the time. Countries like japan jumped on board fast, if At&t had acted quicker there 3G would be amazing.
I had never used that feature until someone pointed it out to me a couple years ago.. since then I can remember only one instance where I had to use data while on the phone... it's not a big deal.. especially consdiering that my 3G is way ahead of any GSM 3g in the US ... Sprint and Verizon FTW
HSPA+ > 1xEVDO rev a....sorry but more coverage doeant means its technically more advanced.
Evdo Rev from both Srpint and verizon get better reception than AT and T and T-mobile . that's all that matter... doesnt matter how fast your 3G is if you can't get reception
Then next time when your referring to CDMA 3G being ahead specify in terms of coverage NOT technology wise because HSPA blows EVDO out of the water in terms of well everything. And what do you mean "better reception?" they both run on pretty much the same frequency bands and that's all that determines the penetration and stability of the signal unless you really want to start talking about enhanced modulation schemes and air interfaces.....
IOWA
Mr. Logic Pants
Actually no, EVDO Rev B (not implemented) is faster, and i wouldnt say "blows it out of the water" in real world scenarios it really isnt much faster.
Name one handset paired with one carrier that has even thought about rev b...yeah. HSDPA always seams to be faster no matter what. Go to japan where DoCoMo has HSPA+ and your phone gets 21 MB/s on the nose downlink and compare it to there equally treated EVDO networks...there's nothing nicer to know that your phone potentioally can out speedtest your cable modem and its not too rare of an occurance either. I'm pretty sure EVDO rev b could have gone to something like 14.7MB/s while HSPA+ can reach something like 42-56 down potentioally which I believe since I've heard of some conucks on belus get 20+ down. Face it UMTS has a wider bandwidth than 1xEv and slighlty suppieror modulation schemes which you can't deny help push the performance, now keeping EVDO devices at 1.25mhz spacing has definatly helped battery life wise, there's hardly a difference between 2g and 3g battery wise on my droid!
EDIT: btw I'm really enjoying this "debate". No hate if I come off as hawkesh I just get a little intense throwing all these terms around.
If this was a major issue for you then why wasn't on your list of things to check when shopping for a new device? Do your research, as always.
Wish there was a facepalm smiley here...
I'm not saying that there aren't people that want SVDO. However, those that need it better have it on their must have list rather than waiting for at&t/Apple to tell them that they need it.
International travel, selection of devices. It's old tech but has its benefits.
IOWA
Mr. Logic Pants
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As I said, not implemented, and I didnt say they were considering it, if anything they would skip straight to EVDO Rev C. (It does exist!) And When I speed test my comcast I get 25+mbps.... so yeah... And still cant touch wired internet latency. Which has ALOT to do with speed. You could have 100+MB down stream vs 50mbps downstream but if the 50mbps has alot better latency, it would be an even match for certain tasks, and the 50meg would be better for real-time applications. Plus your forgeting upstream. There are a TON of variables that go into it, and lab tests don't really affect me, so i don't care. In REAL WORLD scenarios, Here in the United States, or other places besides Japan, The speeds arent much different, and EVDO is often much more reliable and faster.
I'm really not forgetting upstream unless we are talking about video chat in which case I would still prefer HSUPA/HSPA+...for most applications high download speeds coupled with decent upload is fine. I mean HSDPA only effects the downlink and its made a huge difference. Latency is an inherent property of all wireless communications most likely do to the stability of the connection. I still prefer the HSPA family though, thats coming from someone who has used both and currently has an EVDO devices. It seams lately that I never go over 2MB/s on downlink even if its 3 AM open skys in an elevated position (yes I'm nerdy enough to do a Speed test at 3 AM in the morning whilst reading phandroid). And while typically EVDO doesnt go over 1MB/s and is usally faster than HSPA you seam to get lucky in real world situations more often than not with HSPA and get good data rates on both the downlink and uplink especially if the area has the latest HSPA+ or HSUPA upgrade. Look at T-Mobile for example, there 3G while isnt widespread is based of HSPA (soon to be HSPA+ more widespread) and there data rates blow verizons out of the water . I can't really use AT&T as an example because real world there backhaul is the culpret of why there HSPA network isn't faster (they need to cut the "fastest 3G network" bullshit right fast because we all know thats not true with there shit backhaul set up in about 80% of there network). As for EVDO Rev C. I'm aware it exsists but its like a theoretical improvement of an already unimplimented standard...
IOWA
Mr. Logic Pants
Well Im in a heavily populated area (Chicago), so part of it is more than likely tower crowding combined with ATT's poor backhaul. Its funny, at parades or the taste of chicago or other city events, those who have ATT and TMobile can BARELY get calls out and often drop within 1 minute, while those with Sprint and Verizon Call seamlessly with no problems. Even US Cellular is better. And as for latency, 4G WiMax while not at its peak speeds here yet, the latency is a world better than 3G, as it should be. I'd say within the next couple years wireless internet latency will be able to match that of landlines, although I'd still prefer landlines due to superior reliability. Landline internet I believe will be much much harder to replace than landline phone.