Talk:4G

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Contents 1 3G is a flop? 2 MIMO 3 1 Gbit/s? 4 disambiguation page 5 Disambiguation again 6 GAN vs. pervasive networks? 7 Mobile Satellite Ventures 8 Evolution section 9 IPv6

[edit] 3G is a flop?

"However, 3G is regarded by many as being a bit of a 'flop', so telecommunications companies are planning to roll out 4G earlier (possibly as early as 2008)." What?! Since when has 3g been considered a flop? In Australia most phone shops don't even display 2.5G phones anymore, you're pretty much limited to the 3G offering here. I imagine it would be similar in Europe and in many of the Asian countries. Whose benchmark are we using for "flop" ? --Jaymo 09:40, 29 August 2006 (UTC)

Compare the money spent by most telcos on 3G to the money they have earned from 3G. Then cry. Jpatokal 06:55, 30 August 2006 (UTC)

Consider the fact that losses are normal in this industry. Initial investments must be paid off in order for long term returns to be made. --Jaymo 08:36, 3 September 2006 (UTC)

[edit] MIMO

I've seen a few references to MIMO being used in 4G with space-time coding; maybe that's worth mentioning - I'll try to dig one out. Tom1234 21:25, 25 April 2006 (UTC)

Here's a few:

http://www.cwc.oulu.fi/nrs04/slides/mimo_tutorial.pdf

http://www.txtec.org/DShaver.pdf

http://www.scitechpub.com/Jankiraman.htm

[edit] 1 Gbit/s?

That's incredibly fast.

Wiil it really be available in 2010 for commercial use? --Arado 21:02, 13 November 2005 (UTC)

I believe the time frame is 2010-2015 for a global standard rollout; however the Japanese/Chinese/S.Koreans will likely be there first, maybe with a standard or maybe with their own version Tom1234 21:21, 25 April 2006 (UTC)

[edit] disambiguation page

I suggest we make the "4G" entry a disambiguation page as 4G is also a term in computer science relating to fourth generation langauges (like SQL for instance). Please see this for example: http://www.webopedia.com/TERM/F/fourth_generation_language.html

That would be 4GL, which already redirects to Fourth generation language. I wouldn't object to a pointer up top tho. Jpatokal 08:29, 1 December 2005 (UTC)

Allright, done. English is not my native tongue, so please have a look and change as you see fit.

[edit] Disambiguation again

I also suggest we make the "4G" entry a disambiguation page as 4G is also a term in psychology for a particular model of personality.

Please see this for example: 4G Psychological Model

That is a theory developed and advocated by a single business consulting company. Please see WP:OR. Let's mention that one only after it gets picked up by reputable psychology textbooks. Weregerbil 10:20, 7 May 2006 (UTC)

[edit] GAN vs. pervasive networks?

From the description of "pervasive networks", it would seem that GAN/UMA, by providing handoff between GSM and WiFi, is a step towards that definition of 4G.

In actuality, of course, no new transmission technology is being provided by GAN, just a patch on both network and handset ends to manage the handover between already existing networks, which seems a very different sort of development as the other "G"s have been (i.e. load and bandwidth-related). - Keith D. Tyler ¶ (AMA) 23:42, 18 May 2006 (UTC)

[edit] Mobile Satellite Ventures

Mobile Satellite Ventures is claiming a 4G network that combines terrestrial and satellite coverage. Recent job openings at this site betray some interesting data--they are looking for engineers with knowledge of beam-forming to help design terrestrial transmitters that simulate the satellite signal where it's not available. The handsets are using L-band which is also what their current platform uses. The satellites now require a large antenna on the handset but satellites launched in 2009 are going to be very high-powered L-band and remove the large antenna requirement but keep the existing system running.

[edit] Evolution section

This article doesn't a huge section on context - it spends too much time explaining what everything else was/is.

[edit] IPv6

Someone added the claim that privacy would be lost on a move to IPv6. As I see it, in both IPv6 and NAT, only the gateway operator knows who truly made a particular connection to the Internet-proper. It may be easier to avoid the need for logging connections with IPv6, but it doesn't necessarily imply the forced removal of privacy to get it.

As such I added a { { fact } } tag. Anyone want to explain further? Squiggleslash 13:37, 13 November 2006 (UTC)