Where 3G is Now

Where 3G is Now

Technology changes very quickly, which is why you have to be very sure about the gadgets and tools you purchase to get the most benefits. There are several generations available, as far as mobile phones are concerned. You may find that some are still very functional enough to provide for your personal and professional needs. Here are some details about the technology and corresponding network.

The Technical Terms

Generations are defined according to their period of existence. The first kinds are 1G networks, namely C-Nets, NMT, TACS and AMPS which are categorized among the first analogue cellular systems. These began in the early periods of the 1980s. There are radio telephone systems before these. The 2G networks, namely DAMPS, GSM and CDMAOne are the initial digital cellular systems released during the early 1990s. The 2.5G networks, CDMA2000 1x and GPRS are the improved versions of the 2G networks with information speeds moving up to 144 Kbps.

3G networks, namely UMTS TDD and UMTS FDD, CDMA2000 3x, TD-SCDMA, CDMA2000 1x EVDO, Arib WCDMA, IMT-2000 DECT and EDGE are the most recent cellular networks with data rates ranging up to 384 Kbit/s and higher. 4G is generally a marketing concept at present. There are already studies and research being conducted to develop the 4G, although no frequencies have been assigned yet. This newest technology is expected to launch in 2012.

The International Groups

ETSI or European Telecommunications Standards Institute is functioning in Europe to improve technical standards for the UMTS. 3GPP or 3rd Generation Partnership Project is a participation between international standards groups will lead to UMTS and 3G mobile telephony technical specifications. The starting members include TTC and ARIB from Japan, TTA of Korea, T1 (ANSI) of the United States and ETSI from Europe. The function of the groups is presented globally by the ITU or International Telecommunication Union.

ITU direct worldwide spectrum and the standardization of IMT2000, lets regional regulatory policies work together and is a framework and base for 3G combination over different technologies and regions. The UMTS Forum shows the opinions and views of the telecommunication operators and industry. These are a mobile operator group, together with GSM Associates. European Union or EU brings together the 15 members on implementation of the UMTS.

Comparing UMTS

UMTS is quite different and unique from other 2G networks at present. It offers higher speech quality that available networks now have, in addition to speech traffic UMTS, with information services and advanced information. UMTS is advantageous compared to 2G because of its capacity to support 2 Mbit/s data speeds. UMTS is considered as a true global system, made of both satellite and terrestrial components. The consistent service area is one of the best aspects, even when the person is roaming through the VHE or Virtual Home Environment. Users still get to have a variety of services, despite a roaming status.

Being Wideband

WCDMA is called wideband, because 3G WCDMA systems have a bandwidth of 5 MHz in a single direction. 5 MHz is not considered wide or narrow, but the bandwidth is relatively very high. The recent 3G WCDMA systems have a bigger bandwidth compared to current 2G CDMA systems. The new 3G WCDMA systems have wider bandwidth compared to current CDMA systems. There are also commercial CDMA systems with 20 MHz bandwidth.

Understanding WCDMA

Understanding WCDMA

3G technology also comes in various forms and platforms. Understanding the major ones will help you decide which one is the right tool. You should also tell the technical details, to know if you are getting the right kind of efficiency and accessibility. Getting information from the internet other various sources will never be as convenient as fast, since 3G is the newest available. There are new developments and changes as well to get you ahead.

Knowing WCDMA or UMTS

W-CDMA wideband code-division multiple-access is among the major technologies that implement the 3G or third generation cellular systems. This is founded on the radio access technique suggested by the ETSI Alpha Group. The details and specifications were finalized in 1999. The implementation of W-CDMA is going to be a technical challenge due to the complexity and versatility. The sophistication of the of the systems of W-CDMA can be seen from various aspects.

These are namely the complexity of the overall system, computation complexity of the receiver and the complexity of ever single algorithm. W-CDMA link-level simulations or more than 10 times the compute intensive compared to 2G simulations. In the interface of W-CDMA, the different interface users can immediately transmit at varying information rates, with the data rates even varying in time. Networks of the UMTS are required to support every 2G service, plus new services and applications.

The Technical Details

As for the FDD technical summary, the frequency band will range from 1920 MHz up to 1980 MHz and 2110 MHz and 2170 MHz or frequency division duplex. The minimum frequency band needed is 2 x 5 MHz. The frequency re-use is 1. Carrier spacing is between 4.4 MHz and 5.2 MHz. The most number of voice channels on 2 x 5 MHz is 96 with a spreading factor of 256 UL and AMR or 7.95 Kbps and 98 with a spreading factor of 128 UL and AMR of 12.2 Kbps.

Other Specs

The voice coding includes AMR codecs ranging from 4.75 kHz up to 12.2 kHz, GSM EFR is at 12.2 kHz. SID is also included at 1.8 kHz. The channel coding includes convolutional coding with turbo code for high rate data. The duplexer required is 190 MHz separation with asymmetric connection supported. Tx and Rx isolation is MS:55db and BS:80dB. The Receiver is Rake, while receiver sensitivity is Node B.

More Information

Data type for the device is packet and circuit switch. Modulation is QPSK and pulse shaping is root raised cosine, rolling off at 0.22. The chip rate is 3.84 Mcps while the channel raster is 200 kHz. Maximum user data rate on the physical channel is 2.3 Mbps with a spreading factor of 4, and parallel codes of 3 DL / 6 UL, with limited interference. HSPDA will provide data speeds going as fast as 8 to 10 Mps and 20 Mbps for MIMO systems. The channel it rate is 5.67 Mbps with a frame length of 10 ms or 38400 chips.

There are 15 slots or frames, and 2560 chips. Handovers are soft and softer, plus a hard interfrequency. The power control period has a time slot with a rate of 1500 Hz. Power control step size is 0.5, 1, 1.5 and 2 dB while power control range is UL 80 dB and DL at 30 dB.

UMTS and 3G

UMTS and 3G

There are several systems developed for 3G technology, which explains why people should be more aware about the changes and details of their new gadgets. 3G devices can cost a lot of money, so you should learn how to check the specs and platforms first if these work very well for your personal functions and work. UMTS is one of the most common systems. You will find that it is also one of the most ideal to use if ever you choose to invest.

Defining UMTS

UMTS stands for Universal Mobile Telephone System. It is one of the 3G or third generation mobile systems created and developed inside the framework of the ITU IMT-2000. It presents the new generation of broadband multi-media mobile telecommunications technology. The area covered by service providers will be on a global scale, through the FLMTS type or Future Land Mobile Telecommunications Services.

This is now known as IMT2000. The coverage will be given through a mixture of cell sizes starting from in-building Pico Cells to the satellite Global Cells. These provide services to the far areas of the globe. The UMTS is not an alternative of 2G or second generation technologies like DCS1800, GSM and CDMA that constantly changes to their optimum potential.

The Various Kinds

There are several networks types featured by 3G technology. ITU suggestion ITU-R M.1457 indicates 5 kinds of 3G radio interfaces. Inclusions are the IMT-2000 DECT assisted by the DECT forum, the IMT-2000 TDMA Single Carrier, which is also called UWC-136 or Edge, assisted by UWCC, the IMT-2000 CDMA that spreads directly, also called UTRA FDD which includes WCDMA in Japan. UMTS is developed by 3GPP, IMT-20000 CDMA, also called CDMA2000 3x developed by 3GPP and IMT-2000 CDMA TDD which is also called UTRA TDD and TD-SCDMA.

The Core Networks

There are various types of 3G core networks. The group IMT-2000 of 3G systems involves 3 kinds of core network technology. The first one is the Internet Protocol based in the future to be specific, the GSM based protocols over SS7 protocols for signalling and the ANSI-41 based or IS-634 protocols for sending signals.

CDMA2000 and UMTS Comparison

If you want to compare UMTS and CDMA2000, you can begin by telling their origins. Both were developed individuals and are separate 3G standards approved by ITU. CDMA2000 1xRT and future CDMA2000 3x were enhanced to be backward compatible with CDMA One. The two 1x types are similar in terms of bandwidth and chip rate. Successful deployment in America requires backward compatibility. UMTS was enhanced primarily for nations having GSM networks.

These prime countries are prioritized, since they agree to free new frequency ranges for the networks of UMTS. The benefit is that there are a lot of new capacities for operators because of the new range of frequency. 3GPP manages the standard development and keeps the core network very close to GSM network as much as possible.

Compatibility

UMTS cellular phone units are not intended to be backward compatible with the systems of GSM. There are two flavors available for UMTS, namely FDD and TDD. FDD is implemented first. There are also a number of harmonizations done between the systems, such as pilot issues and chip rate. Always consider your intended functions and level of experience before choosing the right kind to buy and use.

The Several Uses of 3G

The Several Uses of 3G

3G is already embraced by thousands of individuals all around the globe. You can take advantage by assessing the various features and rates first. There are several tools and equipment that incorporate the features and functions of 3G. You may want to know the added uses when going roaming and the like. Here are some vital information on how 3G has spread to the biggest nations of the world, as well as placed itself in smaller areas too.

A New Level of Broadband

In the United Kingdom, the mobile network Three or 3 presents that 90% of the total population in the nation uses and applies 3G, not to mention 99% having the standard text and talk network which includes 2G, 2.5G and EDGE. As expected, you can get a minimum of 2 Mbit/s if you are stationary or only walking slowly. However, speeds will begin to fall as you gain more movement, such as riding a car running at average city speed.

3G networks in Great Britain will provide you several packages. The package can run up from 1.8 Mbit/s on networks like T-Mobile and increase up to the likes of 7.2 Mbit/s. This is the similar speed as a fixed line given a few hundred meters from the possible exchange in city areas of London that takes the entire concept as quick easy mobile broadband to a new and different level.

Anticipations

The packages offered by service providers may not be the same or sustained 7.2 Mbit/s. Typically, 3GB or 3072 megabytes that is included in a given plan can cost you anywhere between $25 to $50 each month. Three or 3 is offering 15GB at around $50 to $60 each month, or at half the price if you already have an existing plan with the company. Three will not provide headline speeds, however, as fast as the one provided by Vodafone.

3G is still considered as a baby, with high prices being expected due to the high fees for frequency licensing. The basic expenses of getting several teams of engineers to start a nationwide network and maintenance can be quite high. Canada, shows some of the biggest data access fees in the world available to subscribers. The absence of a data agreement with 1KB of data can be priced at $0.05, converting into $50 for every megabyte used on the GSM providers Rogers and Fido in Canada. The creation of a 4G network is under works, which is capable of providing speeds of up to 100 Mbit/s for mobile users and up to 1 Gbit/s when stationary.

For Security

3G provides you the a bigger degree of security compared to 2G predecessors. It allows the UE to authenticate the network that it is connected to, the consumer can be certain that the network is the right one and not impersonated. 3G networks apply the KASUMI block crypto, aside from the older A5/1 stream cipher. Several serious weaknesses in the KASUMI cipher have been pointed out, however. End to end security is provided aside from the 3G network infrastructure security, when frameworks of applications like IMS are connected to, although this is not usually a property of 3G.

Some Issues

3G is successfully introduced to consumers all over the globe, with a number of issues being argued by both users and providers. Expensive input fees for the licenses and agreements can be given, as well as several differences in the licensing terms. There is also the extra expense of acquiring advanced 3G mobile units and the lack of buy-in by 2G mobile consumers in exchange for the new wireless services of 3G.

The Platforms of 3G

The Platforms of 3G

3G, just like other types of technology, also comes in various kinds and platforms. Depending on the model, the speed, capacity and overall feature will also differ. Customers will have to pay more for very advanced designs, complete with the important functions. Some of the top manufacturers and investors have poured in a lot of effort and money just to create the right components that will best suit consumers all over the world.

On Freescale

Freescale features a wide range of platforms on the cellular level, complete with components that will match the time-to-market and minimal cost requirements of ODMs and OEMs. There is opening operating system support which also includes S60, Microsoft Windows Mobile, Symbian and Linux. One-core modem architecture applies software to isolate modem and other applications on hardware that is shared. This significantly minimizes sophistication and simplifies the software development and speed time to market by around 6 months.

Features and Products

The world-class security in software and hardware for secure transactions is also featured. Freescale also has low power style that incorporates sophisticated techniques like dynamic voltage scaling, low leakage process for optimum usage time and clock gating. There is reduced component quantity for sleek, slim and modern styled handsets.

Some of the products available include the MXC300-30 and MXC275-30. The 300-30 is a lone core modem platform of 3G which is used mainly for EDGE, GSM, GPRS, HSPA and UMTS/WCDMA. The MX275-30 is a 2.75 one-core modem platform that is mainly used for EDGE Type 12, GSM and GPRS.

The Technologies

The MXC300-30 boasts of the MXC one-core modem architecture, the LTE that will send desktop information rates to cellular tools and devices and the HSPA for quick 3G speeds immediately. The MXC300-30 is the initial platform that has the 3G single core modem. The single core processor located at the center mixes the StarCore SC140e Digital Signal Processor or DSP that functions at a maximum of 250 MHz and a processor core, ARM1136 that functions up to 532 MHz. The single core modem manages all signalling protocol layers L1, L2 and L3 for 3G, 2.5G and 2.75G standards, involving the Global System for Mobile Communications (GSM), EDGE or Enhanced Data for GSM, GPRS or General Packet Radio Service and WCDMA or wideband code division multiple access.

Features

The device features the StarCore SC140 DSP with a speed maximizing at 250 MHz. It also has an ARM11 applications processor with a maximum speed of 532 MHz. Other features include Quad-band GSM 850/900/1800/1900 MHz and WCDMA tri-band 850/1900/2100 MHz. HSDPA has 3.6 Mbps. There is also an optimization for open operating systems such as Symbian and Linux, excluding the addition of any accelerator or processor.

There is a single antenna interference that cancels the GMSK or Gaussian minimum shift keying. Wireless connectivity features include the Bluetooth interface support, wireless local area network or WLAN and Digital Video Broadcasting-Handhelds or DVB-H interface support. The features are fairly similar to others that are also sold in the same class.

The Device

You can learn more about other available powerful tools and devices on the internet and by visiting telecommunications shops and service providers. Find out more about the important features and how these can work well with your lifestyle and occupation. Price will vary, depending on the included features and tools.