Using a cell phone as a modem for Internet access

What are the features and functionality should include, in order to take full advantage of access to the Internet via a mobile phone? Although this may seem complicated and involved ... little information goes a long way to "keep it simple".

For the sake of argument .... say you have a phone with the following characteristics:

The networks ...

2G Network GSM 900/1800/1900
3G-UMTS 2100

Data ...

GPRS-clause 10 (4 +1 / 3 +2 slots) 0.32 to 48 Kbps
3G-384 Kbps

It is configured as the application software on the phone with your laptop .... and once you connect your phone to your laptop via the USB connection you can access the Internet. The settings used in the software includes "call type = GPRS". The connection speed (downlink) is about 375 Kbps, if activated, through a tool freely available on the Internet .... and the speed of the modem's phone appears as 460.8 Kbps all the time (network connection). Since the speed is less than 384 Kbps (3G speed is given as spec of the phone), it is likely that using 3G. Because GPRS is also supported, when 3G coverage is not available, you're probably able to switch to GSM / GPRS.

The service provider says it supports EDGE, GPRS, 3G and HSDPA / HSUPA.

Here are some questions you can ask .....

* What are the theoretical maximum speed of EDGE, GPRS, 3G?

* What is actually meant by 3G here?

* What is the underlying technology used by my phone?

* Which method is better to connect your phone to your laptop, Bluetooth or USB?

* Your phone says Bluetooth v1.2 and USB 2.0 spec and you've heard that USB 2.0 (480Mbps) is faster than Blootooth v1.2 (1 Mbps). Is this correct? We will make no difference, since the connection from the phone to the Internet is 375 Kbps?

Here is some feedback to help you work with such a scenario .... and issues associated with the above:

Certainly, the speed with USB 2.0 should be much better than that with Bluetooth (any class).

3G is a network technology that should offer some extended data services in addition to the normal GSM functions. However, I recommend you check with your service providers since they must have the exact specifications you requested.

Theoretical speeds of EDGE are up to 10 times those of GPRS. But again, since these depend on network configuration you should check with your service provider.

Since the speed is less than 1 mb / s, quite frankly, it does not matter if you use bluetooth or USB - the speeds quoted are correct. I would use what is most convenient for you.

In any case, the edges / connection speed HSDPA are still slower than Bluetooth or USB, so as not to bottleneck speed. So as long as the battery is running low, you can connect people choose.

3G HSUPA is Third Generation High-Speed ​​Uplink Packet Access - a 3G mobile telephony protocol, which offers higher data transfer speeds and capacity of up to 3.6 Mbps downlink and up to 1 Mbps on the uplink, in ideal conditions.

3G HSDPA 3.6 is a 3G High-Speed ​​Downlink Packet Access mobile telephony protocol, which offers faster data transfer and capacity of up to 3.6 Mbps downlink and up to 348Kbps on the uplink, under ideal conditions.

3G - Third Generation High-Speed ​​Downlink Packet Access - offers increased data transfer speeds and offers customers access to the Internet and e-mail from their cellphones.capacity up to 1.8 Mbps downlink and up to 348Kbps on the uplink

EDGE (Enhanced Data Rates for GSM Evolution) or EGPRS provides data transfer speeds much faster than GPRS and HSCSD. EDGE increases the speed of each time interval of 48 kbps and allows the use up to 8 timeslots, giving a data transfer rate of 384 kbps.

HSCSD (High Speed ​​Circuit Switched Data) allows data to be transferred faster than standard GSM (Circuit Switched Data) system using multiple channels. The maximum number of time intervals that can be used is four, giving a data transfer rate of 57.6 kbps (or 38.4 kbps on a GSM network 900). HSCSD is more expensive to use GPRS, because all four slots are used simultaneously - does not transmit data in packets. Because of this, HSCSD is not as popular as GPRS and is replaced by EDGE.

GPRS - General Packet Radio Service is a mobile data service available to customers with GSM phones. With a GPRS connection, the phone is "always on" and can transfer data immediately, and at higher speeds: typically 32 to 48 kbps. A further advantage is that data can be transferred at once to make a voice call.

I would recommend using USB is faster than Bluetooth. You will not have a bottleneck created by the bluetooth connection.

With regard to the basic technology ...

When the phone is connected to a 3G network will be using W-CDMA (Wideband Code Division Multiple Access) W-CDMA is the highest speed transmission protocol as used in the UMTS system, is a third generation following the 2G GSM networks distributed throughout the world.

When the phone is on 2G GSM is using a form of TDMA (Time Division Multiple Access).

Once again .... The main message is this: If possible, simplify and make more convenient for you! ......