Slashdot Mirror

Where'd you get that impression?

MPEG-4 is the basis of the 3GPP andstandards for cell phones in japan, and KDDI's ezmovie system (not sure if it's a competing standard, or just something that predates the standard).

In fact, MPEG4 makes less of a difference when compared to MPEG2 on high res content than on low res content.

It was a 2002 Toshiba model with au/KDDI service. I could tag any photo with the GPS coordinates and mail it off to let people know where I was. It's nice to look back at old shots and be able to find the location on a map, but I'm sure it can be used for many more practical purposes.

I am an engineer who works for a company that makes base station-side software and hardware for this product. We are a supplier to Nortel, who is the general contractor for the San Diego deployment. Since I personally wrote a lot of the code that makes this stuff work, I can speak somewhat authoritatively on this technology.

First of all, EV-DO does scale. There are 5 million subscribers in Korea alone, shared between SK telecom and KT freetel. The technology has also been rolled out in a big way in Japan by KDDI recently.

It is true that the current Verizon deployment uses only PCMCIA cards. But phones are on the way later this year. There are dozens of EV-DO enabled phones and handheld devices available. Check out this page. EV-DO is data only, but nothing says that end-user devices cannot be EV-DO + 1x-RTT.

The article says that this is not "always on". That is misleading. EV-DO has the concept of "sessions" and "connections". Sessions are always on, and connections are on an as-needed basis. Connections are set-up when the user needs to send/receive data and torn down when he is done. This happens automatically, the user does not have to do anything special when he needs to do something. (For e.g., just click on a link on slashdot and a new connection is set up, data is uploaded and subsequently downloaded from the website, and the connection is torn down. All this happens automatically, the technology takes care of everything).

This is not a LAN technology. It is not a replacement for WiFi. This is a CDMA-based, cellular-WAN technology. It automatically provides all the security of a CDMA-based network. Not that this is perfect, but it is much better than WiFi in that w.r.t. security.

Hari.

1xEV-DO, which is part of the CDMA-2000 family, has already been deployed on a large scale in Korea and Japan. If reports are to be believed, it is a smashing success. Verizon wireless is offering it in 2 cities right now in the US, and will roll it out nationally by the end of this year.

1xEV-DO, is a mature, commercially proven technology that is supported by dozens of Vendors. Several dozen phones/PDAs etc are available from several manufacturers.

I have friends who are using this in San Diego. Depending on where they are, they get speeds of 200Kbps-600Kbps downstream, and 40-100Kbps upstream. Round-trip ping times are 100-140ms.
This is on a real, commercial network with presumeably thousands of users.

I have not seen any corresponding "real-life" numbers on OFDM anywhere. Not to say that it is worse than 1xEV-DO, but Nextel definitely gets no credit for this, they are late to the party.

I would not worry about your job just yet:)

Magnus.

Like for example this phone here: Samsung SCH V420

Despite what Qualcomm (creators of CDMA) would like you to think, Sprint PCS Vision is not a 3G system. PCS Vision and Verizon Wireless both use a cdma2000 1x network (per this site), but cdma2000 1x is really a 2.5G technology, despite what Qualcomm would like you to think.

GPRS, the technology used by AT&T and T-Mobile, is also 2.5G.

T-Mobile also offers a PC Card that allows a laptop or PDA with a PC Card slot to connect via GPRS.

Nokia is certainly not the first phone to operate on 3G. It isn't even the first phone to work on WCDMA 3G.

For those who don't know, the ITU defined a set of 3 CDMA-based standards for 3G; WCDMA, CDMA2000, and TD-SCDMA.

CDMA2000 services have been rolling out for quite some time. There are currently over 16 million subscribers (Korea alone accounts for 12 million and Japan with 2.14 million.) This is the standard rolling out in the US with SprintPCS and Verizon.

WCDMA on the other hand has very few users, on the order of 0.13 million.

Panasonic WCDMA device launched in September 2001 by NTT DoCoMo obviously beat this Nokia. NEC has a couple models launched in October 2001 for WCDMA as well.

Now, most CDMA2000 devices are 1x (low bandwidth first iteration.) Full blown 1xEV-DO (2 Mbps) devices were launched a while ago for the Korea market. These include LG LG-KH5000 in May 2002 and most recently the Samsung SCH-V300 launched in September 2002.

See 3G Today for a very extensive list of 3G devices.

Nokia is certainly not the first phone to operate on 3G. It isn't even the first phone to work on WCDMA 3G.

For those who don't know, the ITU defined a set of 3 CDMA-based standards for 3G; WCDMA, CDMA2000, and TD-SCDMA.

CDMA2000 services have been rolling out for quite some time. There are currently over 16 million subscribers (Korea alone accounts for 12 million and Japan with 2.14 million.) This is the standard rolling out in the US with SprintPCS and Verizon.

WCDMA on the other hand has very few users, on the order of 0.13 million.

Panasonic WCDMA device launched in September 2001 by NTT DoCoMo obviously beat this Nokia. NEC has a couple models launched in October 2001 for WCDMA as well.

Now, most CDMA2000 devices are 1x (low bandwidth first iteration.) Full blown 1xEV-DO (2 Mbps) devices were launched a while ago for the Korea market. These include LG LG-KH5000 in May 2002 and most recently the Samsung SCH-V300 launched in September 2002.

See 3G Today for a very extensive list of 3G devices.

Nokia is certainly not the first phone to operate on 3G. It isn't even the first phone to work on WCDMA 3G.

For those who don't know, the ITU defined a set of 3 CDMA-based standards for 3G; WCDMA, CDMA2000, and TD-SCDMA.

CDMA2000 services have been rolling out for quite some time. There are currently over 16 million subscribers (Korea alone accounts for 12 million and Japan with 2.14 million.) This is the standard rolling out in the US with SprintPCS and Verizon.

WCDMA on the other hand has very few users, on the order of 0.13 million.

Panasonic WCDMA device launched in September 2001 by NTT DoCoMo obviously beat this Nokia. NEC has a couple models launched in October 2001 for WCDMA as well.

Now, most CDMA2000 devices are 1x (low bandwidth first iteration.) Full blown 1xEV-DO (2 Mbps) devices were launched a while ago for the Korea market. These include LG LG-KH5000 in May 2002 and most recently the Samsung SCH-V300 launched in September 2002.

See 3G Today for a very extensive list of 3G devices.

Nokia is certainly not the first phone to operate on 3G. It isn't even the first phone to work on WCDMA 3G.

For those who don't know, the ITU defined a set of 3 CDMA-based standards for 3G; WCDMA, CDMA2000, and TD-SCDMA.

CDMA2000 services have been rolling out for quite some time. There are currently over 16 million subscribers (Korea alone accounts for 12 million and Japan with 2.14 million.) This is the standard rolling out in the US with SprintPCS and Verizon.

WCDMA on the other hand has very few users, on the order of 0.13 million.

Panasonic WCDMA device launched in September 2001 by NTT DoCoMo obviously beat this Nokia. NEC has a couple models launched in October 2001 for WCDMA as well.

Now, most CDMA2000 devices are 1x (low bandwidth first iteration.) Full blown 1xEV-DO (2 Mbps) devices were launched a while ago for the Korea market. These include LG LG-KH5000 in May 2002 and most recently the Samsung SCH-V300 launched in September 2002.

See 3G Today for a very extensive list of 3G devices.

Nokia is certainly not the first phone to operate on 3G. It isn't even the first phone to work on WCDMA 3G.

For those who don't know, the ITU defined a set of 3 CDMA-based standards for 3G; WCDMA, CDMA2000, and TD-SCDMA.

CDMA2000 services have been rolling out for quite some time. There are currently over 16 million subscribers (Korea alone accounts for 12 million and Japan with 2.14 million.) This is the standard rolling out in the US with SprintPCS and Verizon.

WCDMA on the other hand has very few users, on the order of 0.13 million.

Panasonic WCDMA device launched in September 2001 by NTT DoCoMo obviously beat this Nokia. NEC has a couple models launched in October 2001 for WCDMA as well.

Now, most CDMA2000 devices are 1x (low bandwidth first iteration.) Full blown 1xEV-DO (2 Mbps) devices were launched a while ago for the Korea market. These include LG LG-KH5000 in May 2002 and most recently the Samsung SCH-V300 launched in September 2002.

See 3G Today for a very extensive list of 3G devices.