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CDMA vs. GSM/GPRS . . . Which one is "better" or should I say "faster" ... C Spire/Cellular South forum

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    Quick question (I hope) regarding networks

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    CDMA vs. GSM/GPRS . . .

    Which one is "better" or should I say "faster" ?

    I know that certain carriers have certain types of networks, however, here's the reasoning behind the question -- I am going to use a BB for mobile e-mail and internet/web surfing exclusively (I am going to keep my cell phone). With that in mind -- which network is "better" and/or "faster".

    Thank you very much in advance.

    Eric

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    Re: Quick question (I hope) regarding networks

    By the way, I am thinking that when people say "faster" they are talking about websurfing, download time, etc.

    Am I correct?

    TIA again.

    Eric

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    Re: Quick question (I hope) regarding networks

    Just between these three? CDMA is faster, but both CDMA and GSM each have its own advantages. GSM does have a much bigger population around the world. So, when it comes to roaming it can offer more roaming capabilities. But buckle your seat belts, CDMA is also catching up.

    GPRS is a packet based communication service for mobile devices that allows data to be send and received across a mobile telephone network. Speeds are attainable at around 56 to 118kbps. By combining standard GSM tiem slots theoretical speeds of 171.2kbps are attainable. But then, 20 to 50kbps are more realistic.

    I'm going to through in EDGE, I'm sure you've heard about this too. EDGE (Enhanced Data Global [or GSM] Evolution) is an extension of GSM. EDGE gives the mobile telephone user access to increased bandwidth and multimedia services, such as video clips. The advantage of EDGE is that this technology allows the existing GSM infrastructure to be expanded to EDGE. In short, for many GSM/GPRS networks, EDGE is a simple software upgrade.

    There's tons of info on these networks, hope this helps for now.
    vipz o';'o

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    Re: Quick question (I hope) regarding networks

    Thank you for the info.

    I only limited my quiestion to the 3 because I thought most carriers, BB's, and BB-alternatives used these 3. Yes, I have been told that GSM/GPRS has distinct advantages with international travel and roaming. To some, like me, international travel/roaming is not an issue.

    I overheard someone talk about a new technology EDVO, EVDO or something like that. It's coming to Verizon perhaps. Not sure what I heard, but whatever it was I certainly did not understand it.

    Anyway, is EDGE out there and being used with any BB's? I am sure some of the carriers who offer BB-alternatives (cell phone, smart phone, etc.) have other types of networks, however, if you were limiting yourself to just a BB, here in the US, is it just GSM/GPRS or CDMA?

    Thank you very much again.


    Eric

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    Re: Quick question (I hope) regarding networks

    a little more:

    Network Types explained in brief... GSM, GPRS, CDMA, Mobitex, EDGE

    GSM (Global System for Mobile Communications)
    * Provides basic data services
    * Provides voice service through digital network
    * SIM card (Subscriber Identity Module card) stores phone number, connection information, and may store an address book.
    * This allows a user to switch devices without needing to contact the service provider.

    Note: BlackBerry’s can not send / receive email, PIN’s, or browse the internet with only GSM (GPRS is required).


    GPRS (General Packet Radio Service)
    * Extends the GSM network
    * Allows for advanced data services
    o Use device as Modem
    o Use device as web-browser
    o etc
    * Data transmission is significantly faster than GSM (up to 54 kbps)

    Note: 'gprs' (without the capital letters) aka 'Sleeping gprs' on a blackberry indicates that service exsist; but your device cannot register on it. Try recycling the handset or the radio.

    EDGE (Enhanced Data for Global Evolution)
    * An extension to the GSM / GPRS networks
    o More than three times faster than GPRS
    o Average download speed of 100 – 130 kbps
    o Burst speeds up to 200 kbps
    * Not yet supported on BlackBerry devices
    * Will be available the next generation of Blackberry devices including the 8700 series.


    CDMA (Code Division Multiple Access)
    * Technology is patented by Qualcomm
    o As such all CDMA BlackBerry’s use Qualcomm processors and network technology.
    o More expensive to build then GSM / GPRS devices
    o Processor is slower than on the GSM / GPRS devices
    * BlackBerry’s use CDMA 1x
    * RTT
    o Provides maximum data rates up to 300 kbps
    o Only a small fraction (50 – 60 kbps) of this is available today


    Mobitex (Two-way packet-switch network)
    * Originally designed for text pagers
    * Used by the BlackBerry 95x, 85x
    * Network coverage is limited to metropolitan areas
    * Radio uses very little power, allowing batteries to remain charged for several weeks
    * Mobitex devices are being phased out by Research in Motion


    Not included:
    o TDMA (Time Division Multiple Access)
    o FDMA (Frequency Division Multiple Access)

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    Re: Quick question (I hope) regarding networks

    Right on hydn!~ I knew you would jump in, we were waiting for you. = )

    Thank you!~
    vipz o';'o

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    Re: Quick question (I hope) regarding networks

    Quote Originally Posted by vyperz
    Right on hydn!~ I knew you would jump in, we were waiting for you. = )

    Thank you!~
    Cut and pasted that from the FAQs section.

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    Re: Quick question (I hope) regarding networks

    Thank you again for the info. So, here's where I was going --

    I am not wanting one of the QWERTY keyboard models. My tech guys tell me I can go with pretty much any carrier -- Nextel, Sprint, Verizon, ATT, Cingular, the merged carriers, etc., and we are getting nice discounts from most of them. It looks like the 7100 and 7200 series are being offered, and I am shying away from the 7100. I get a nice discount on plans as well and don't need a voice plan.

    Limiting my choices to the 7200 series, is there any reason I should prefer one carrier over another, or one BB model over another? I am in the NJ (NY/NJ metro) area and don't travel internationally.

    Thank you very much everyone. This is really a great forum and even a Tech Idiot can feel welcome.

    Eric

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    Re: Quick question (I hope) regarding networks

    Sorry, made a mistake above. I don't want the sure-type keyboard as found on the 7100. I'd prefer the standard, old fashion keyboard.

    Eric

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    Re: Quick question (I hope) regarding networks

    Hey Eric,

    Hope all is well today. Find out if they'll offer a discount on the 8700. You'll be able to use it with EDGE. = )
    vipz o';'o

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    Re: Quick question (I hope) regarding networks

    Some info about EVDO. = )

    EVDO or Evolution Data Only,Evolution Data Optimized, often abbreviated as EVDO, EV-DO, EvDO, 1xEV-DO or 1xEvDO, is a fast wireless broadband access (3G) without needing a WiFi hotspot (a common misspelling is EDVO). You are the hotspot. You can have fast internet access, anywhere. No need to find a hotspot. For example, get high speed internet access in a car, train, clients, anywhere you can open your laptop.

    Currently, available is Verizon EVDO and Sprint EVDO (Sprint has coverage in all airports and is starting to rollout coverage, but it is limited.)

    EVDO vs. Other 3G Technologies

    CDMA 2000-1x EVDO 2,400 kbps
    W-CDMA 2,000 kbps
    EDGE 384 kbps
    CDMA 2000-1x 144 kbps
    GPRS 115 kbps
    GSM 14.4 kbps
    vipz o';'o

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    Re: Quick question (I hope) regarding networks

    Quote Originally Posted by vyperz
    Hey Eric,

    Hope all is well today. Find out if they'll offer a discount on the 8700. You'll be able to use it with EDGE. = )
    I was not really looking for the EDGE technology; just trying to be more educated about the whole topic. I sent an e-mail to our inside contact about the 8700 (if it's available to us) just to see what the deal is.

    Like I said, I am wanting to stick with the standard, regular keyboard, so is there anything I should be considering, thinking about, etc., on my original question --
    Limiting my choices to the 7200 series, is there any reason I should prefer one carrier over another, or one BB model over another? I am in the NJ (NY/NJ metro) area and don't travel internationally.

    Thank you.

    Eric





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    Re: Quick question (I hope) regarding networks

    BTW, just to clarify, I didn't think it was a good idea to have my first BB experience be with the newest, state of the art, etc. BB8700. Also, I am leaning toward Verizon, which was part of the the original motivation behind my question.

    I am thinking Verizon (CDMA) and 7200 series.

    Is the 7750 discontinued? It looks like it has a bigger screen, perhaps overall just a bit bigger.

    Thanks.

    Eric

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    Re: Quick question (I hope) regarding networks

    Just FYI cingular just announced EDGE service to several major metro areas

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    Quote Originally Posted by aosmith
    Just FYI cingular just announced EDGE service to several major metro areas
    Well that is great to hear

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