Evdo Technology Which Gives Upto 2.4mbps Connection

[abhay 0]

but consumer sector is much much more bigger than corporate sector so!! companies might wanna target this sector!

[Mahinder 0]

comon man Rs.5 for consumer sector is also good price. Won't you pay Rs.10 to save Rs.100 travelling time ?

This will work well in metros and will be big revenues for reliance.

[HetalDP 947]

EVDO (Evolution Data Only)

means all Frequency is used as IP Based Data Packet

and Voice is Carried over Data Packat with Pripority Tags attached

Suppose Reliance is Allocated 5 Mhz Band

it is devided in 4 slot card each of 1.25 Mhz CDMA Card, when EVDO will come they will Unplug 1.25 CDMA 1x Card it Push an EVDO Card in same 1.25 Mhz Slot means that Tower is EVDO ready, How easy na. CDMA Technology is built in a manner that can be upgraded so fast. in case of GSM it Support 850,900,1800,1900 Mhz Band and 3GSM (WCDMA,UMTS) works in 1900 and 2100 Band With Dedicated 5mhz Band Separate for 3G Services which will lead them to bleed so much capital for such Upgrade. But For Reliance and Tata it is just Unplugging 1 cdma card and pusshing EVDO Card in Slot of Tower. and in phased manner replacing major card of CDMA 1x with EVDO and placing CDMA Card in Rural of Distance area. as EVDO Rev 0 and Revision 1 works in 1.25 Mhz Slot only.

Now the Question is why Reliance and Tata is waiting for.?

Ans 1. In India 3G policy is still awaiting

Ans 2. EVDO Revision 0 is Absoulute and EVDO Rev. 1 is at end of Expiry in Koria and Japan of KDDE network. Revision 2 or Reveion B is Comming which will support Download of 10 mbps and Upload upto 2.2 mbps, so Reliance / Tata might buy Old EVDO Rev - 1 Equipment from existing CDMA Operator who wanna swith to Rev-B

now comming to the Data Rate

in Rev 0,1 Data rates for Download is 2.2 Mbps Theoritically and practically 1 mbps download and 144 kb upload, now Question Tower already have Backend link of 1 or 2 mbps then how can they feed used with 1 mbps

Now 1 mbps/144 kbps (Rev0/Rev1) is given on 1.25 Total Band and it is being shares among 100 users but at any momemnt very few will be active to carry data operation so one can definatly have good chunk of Data Flowing to him.

why Rev0 Rev1 is absoluting is

Ans - Rev0 and 1 is Devided in Manny Slot of 1.25 Mhz. so Data Bunding is not allowed above 1 mbps Limits so for no user the Bandwidth will shoot to rate above 1 mbps but if they Develop card for 5 mhz Band the Datarate can shoot to 10 mbps with software upgrade, but again this 10 mbps will be shared with 500 users rather than 100 user in rev0 and Revision 1 type. But any Point of time chances of pusshing bandwidth for single user can go upto 10 mbps download. so user dont have to wait so much then again this band with will go to another shared userd in Times based manner or as per Priority Requirement.

EVDO is TDMA Technology so CDMA 1x people are moving to TDMA (Time Devision multiple Access)

now GSM (a TDMA Technology is going for WCDMA Wideband CDMA)

Here is the Growth Path

GSM(10k/10k) - GPRS(44k/10K) - EDGE(250k/44K) - WCDMA/UMTS(386K/44K) - HSDPA(1mb/144k) - HSUPA(8mb,2mb)

and CDMA is

CDMA 1x(144k/40k) - EVDO Rev-0(1mb/144k) - EVDO Rev-1(1.5mb/250k) - EVDO Rev B(10Mb / 1 Mb)

Writter is a Network Programmer

Edited May 21, 2011 by HetalDP

[KumaarShah 143]

Very Interesting technical jargon. Thanks a lot for your efforts.

But for us laymen, please advise which is better - GSM or CDMA (Reliance only) And in your opinion, which way will Reliance finally go?

[HetalDP 947]

Definately with no Doubt CDMA will always have an upper Edge over GSM

as CDMA is Developed by a Company (Qualcomm) and only have right so they have Full Liberty over the Technology Implementation as GSM is Co-Developed by GSM Association (Major are Europian Mobile Provider like Nokia, Ericsonn, Siemens, Motorola, Huawei, ZTE) so its takes time to Approve any new Technology and Finally Implements it in Live System. Plus it have to Sort out All Compatibility Issue Amongt the Users.

But as GSM is Trully Tested with all Compatibility of every Suppier Distributing Handset in GSM is Very Easy. And Also GSM is Open Standard as Compare to CDMA so Users can get the Handset of His Choice. and When

GSM to WCDMA will eveolve and then HSDPA, HSUPA, HSDP it will be atpar with CDMA in every Manner

Now we know CDMA is better Technology but Reliance not giving any handset which can use full data Feature of Network like Wap Browsing, IM like Yahoo or Messenger so being better Technology don't serve us better as Handsets are not available,

I will alsway Prefer 3GSM(WCDMA) over EVDO of CDMA

Hetal Patel

[kragu 0]

Definately with no Doubt CDMA will always have an upper Edge over GSM

as CDMA is Developed by a Company (Qualcomm) and only have right so they have Full Liberty over the Technology Implementation as GSM is Co-Developed by GSM Association (Major are Europian Mobile Provider like Nokia, Ericsonn, Siemens, Motorola, Huawei, ZTE) so its takes time to Approve any new Technology and Finally Implements it in Live System. Plus it have to Sort out All Compatibility Issue Amongt the Users.

But as GSM is Trully Tested with all Compatibility of every Suppier Distributing Handset in GSM is Very Easy. And Also GSM is Open Standard as Compare to CDMA so Users can get the Handset of His Choice. and When

GSM to WCDMA will eveolve and then HSDPA, HSUPA, HSDP it will be atpar with CDMA in every Manner

Now we know CDMA is better Technology but Reliance not giving any handset which can use full data Feature of Network like Wap Browsing, IM like Yahoo or Messenger so being better Technology don't serve us better as Handsets are not available,

I will alsway Prefer 3GSM(WCDMA) over EVDO of CDMA

Hetal Patel

when will this come in to use now is there any EVDO available in chennai of course started by reliance????

Edited April 7, 2008 by kragu

[KumaarShah 143]

^^^

None of the private operators have started EVDO as yet. Only BSNL is providing EVDO in some places.

No idea why only BSNL has been allowed and the private operators are still sleeping or not allowed by GoI?

[Dj 25]

its because the spectrum to run 3G services has yet not been released... airtel and others have already tested 3G offerings and applications and are now just waiting for the auction to be able to roll out 3G... untill then its only BSNL which also BTW is purely in experimental stage mind you...

[srk006 21]

But if spectrum is not released, how can BSNL provide the EVDO services commercially. They can't do it with the Test spectrum! Can anyone explain how BSNL is able to provide EVDO while private cos are not?

[kshah 452]

EVDO that way is wonderful technology it runs on 450 Mhz, 800 Mhz and 1900 Mhz as efficiently. Also for data there is no comparision between W-CDMA and EVDO. EVDO do performs, where as W-CDMA do performs but at much lower rates.

[Gotlo 0]

Even if Rel launches evdo or anything even faster, do you think it will be cheap?

Just look into what it is offering now -- paltry 1x dial up and look at the cost - 60p per minute!!!

Remember when reliance launched this 1x dial up it was like a Messiah... gave us an easy and fast option to move away from bsnl dial-ups.

Their website explained the reason behind the high cost (then it was 50p per min) - its faster and its wireless - (even for Hello users this advantage was forced upon)

And now look into the present scenario - i have a hello connection and still pay 60p per min to access net at such paltry speed. So I had to go for a bsnl landline and their broadband connection.

So I think if they again come up with EVDO or its variants, they will present them as premium service with premium charges.

Lets see... after all even I want a wireless high speed connectivity option... but should be cheap.