3G Explained From Development to Shutdown

The first 3G network was launched in Japan in 2001 by NTT DoCoMo, marking the beginning of a new era in mobile communication.

This innovative technology was a significant improvement over its predecessors, offering faster data speeds and better voice quality.

The initial 3G standard, known as W-CDMA, was developed by a consortium of companies including NTT DoCoMo, Motorola, and Nokia.

In the early 2000s, 3G networks began to spread globally, with many countries launching their own 3G services.

By 2005, over 100 million 3G subscribers were worldwide, a testament to the technology's growing popularity.

However, as the years went by, 3G's limitations became apparent, and it was eventually surpassed by faster 4G and 5G technologies.

The shutdown of 3G networks began in 2017, with countries like the UK and Australia being among the first to decommission their 3G services.

The shutdown process continued throughout the late 2010s and early 2020s, with many countries finally completing the transition to 4G and 5G networks.

Check this out: T-Mobile 4G LTE CellSpot

The concept of 3G began in the late 1990s, addressing the need for more robust mobile communication standards.

The International Telecommunication Union (ITU) played a crucial role in defining the IMT-2000 standard, which encompassed 3G technologies.

Japan's NTT DoCoMo was one of the first operators to deploy a commercial 3G network in 2001.

Since then, 3G has seen global adoption, with significant milestones such as the launch of WCDMA networks in Europe and the expansion of CDMA2000 networks in North America.

3G technology leverages methodologies like Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), and Wideband CDMA (WCDMA) to transmit voice and data over mobile networks.

WCDMA, a prevalent 3G standard, enhances data capacity and speed, making it possible for users to enjoy video calls, mobile internet access, and multimedia messaging.

By efficiently managing spectrum usage, 3G enables higher data rates and improved call quality compared to its predecessors.

A fresh viewpoint: List of 5G NR Networks

3G technology operates on a range of frequencies, including 850 MHz, 900 MHz, and 1800 MHz, which were previously used for 2G networks.

These frequencies allowed for faster data transfer rates and improved voice quality compared to 2G.

The first commercial 3G network was launched in Japan in 2001, by NTT DoCoMo, using the W-CDMA (Wideband Code Division Multiple Access) technology.

This marked the beginning of a new era in mobile broadband, enabling users to access high-speed internet, video calling, and mobile TV.

A unique perspective: Multi-Operator Radio Access Network

Radio equipment for the European market has to conform to the Radio Equipment Directive (RED), which sets requirements on safety, electromagnetic compatibility (EMC), and effective use of the radio spectrum.

Compliance to these requirements can be shown by compliance with Harmonised Standards.

The European Commission Mandate M/536 led to the development of Harmonised Standards to enable radio equipment of the IMT-2000 family to be placed on the European market under the Radio Equipment Directive (RED).

These standards address all IMT-2000 technologies that may potentially be deployed in Europe.

The joint Task Force within ETSI, known as TFES, develops and maintains the Harmonised Standards, except for EN 301 908-10, which is maintained by ETSI technical committee DECT.

TFES is open to all ETSI members and welcomes participants from other standards and specification groups.

The chair of TFES can extend an individual invitation to interested parties unable to participate through an ETSI membership.

A unique perspective: European Secure Software-defined Radio

Data rates for 3G networks can be a bit confusing, but I'll break it down for you. ITU hasn't provided a clear definition of the data rate users can expect from 3G equipment or providers.

Typical 3G data rates range from 384 Kbps to 2 Mbps for mobile devices. This is a significant increase from 2G networks, which offered data rates between 14.4 Kbps to 64 Kbps.

Theoretical maximum data rates for 3G networks can reach up to 21.1 Mbit/s for HSPA+ and 42.2 Mbit/s for DC-HSPA+. However, actual speeds can fluctuate based on network conditions and user density.

Stationary devices can achieve data rates of up to 14.4 Mbps on 3G networks. This is a big advantage for users who need fast and reliable internet connectivity.

Take a look at this: Mobile Packet Data Service

By June 2007, the 200 millionth 3G subscriber had been connected, with 10 million in Nepal and 8.2 million in India.

In the countries where 3G was launched first – Japan and South Korea – 3G penetration is over 70%.

Italy led Europe in 3G penetration with a third of its subscribers migrated to 3G, followed by Nepal, UK, Austria, Australia, and Singapore at the 32% migration level.

As of Q4 2012, there were 2096 million active mobile-broadband subscribers worldwide out of a total of 6835 million subscribers, which is just over 30%.

About half the mobile-broadband subscriptions are for subscribers in developed nations, 934 million out of 1600 million total.

By June 2014, China had 486.5 million 3G subscribers in a population of 1,385,566,537.

In the US, 321 million mobile subscriptions existed, including 256 million that were 3G or 4G, which is both 80% of the subscriber base and 80% of the US population.

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Security was a significant improvement in 3G networks compared to their 2G predecessors. By allowing the UE to authenticate the network, users could be sure they were connecting to the intended network and not an impersonator.

The KASUMI block cipher was used in 3G networks instead of the older A5/1 stream cipher. However, some serious weaknesses in the KASUMI cipher have been identified.

End-to-end security was also offered when accessing application frameworks like IMS, although this isn't strictly a 3G property.

3G networks enabled a wide range of applications that were previously impractical or unavailable on 2G networks.

Consider reading: Next Generation Mobile Networks

3G networks offer greater security than their 2G predecessors by allowing the UE to authenticate the network it is attaching to.

This means users can be sure they're connecting to the intended network and not an impersonator.

The KASUMI block cipher is used in 3G networks instead of the older A5/1 stream cipher.

However, the KASUMI cipher has been found to have a number of serious weaknesses.

End-to-end security is offered when accessing application frameworks like IMS, which is a significant improvement.

3G networks brought about a significant improvement in data-intensive tasks, enabling seamless internet browsing while on the move.

This advancement was a game-changer for many users who could now access information and services on the go.

One of the most notable applications of 3G networks was in the medical field, where devices such as ankle monitors and medical devices could be supported.

These devices required faster data speeds and enhanced reliability, which 3G networks provided.

The versatility of 3G networks also enabled the use of fire alarms, showcasing the network's ability to support a wide range of applications.

This marked a significant milestone in cellular communications, paving the way for further advancements with subsequent generations of mobile networks.

These applications demonstrate the impact of 3G networks on various fields, setting the stage for the integration of cellular networks into a wide array of technologies and services.

There are almost 8,000 patents declared essential to the 3GPP and 3GPP2 standards.

Twelve companies accounted for 90% of these patents in 2004. They are Qualcomm, Ericsson, Nokia, Motorola, Philips, NTT DoCoMo, Siemens, Mitsubishi, Fujitsu, Hitachi, InterDigital, and Matsushita.

Some patents essential to 3G might not have been declared by their patent holders.

As of 2022, an estimated 5-10 million people, mostly seniors, still relied on 3G phones.

Several operators around the world have already or are in the process of shutting down their 3G networks, with Vodafone UK being one of them, citing 2G's usefulness as a low-power fallback.

In the US, Verizon shutdown their 3G services on 31 December 2022, T-Mobile shut down Sprint's networks on 31 March 2022 and shutdown their main networks on 1 July 2022, and AT&T has done so on 22 February 2022.

Currently, 3G around the world is declining in availability and support, with technology that depends on 3G becoming inoperable in many places.

AT&T offered free replacement devices to some customers in the run-up to its shutdown, as less than 1% of cell phone customers in the United States used 3G as of February 2022.

Smartphones that came on the market after 2014 (flip phones after 2017) should continue to work, such as an iPhone 6 or later and a Galaxy S5 or later.

Additional reading: Iphone X S Dual Sim

There are almost 8,000 patents declared essential to the 3GPP and 3GPP2 standards.

Twelve companies accounted for 90% of these patents in 2004, including Qualcomm, Ericsson, and Nokia.

Some patents essential to 3G might not have been declared by their patent holders, with Nortel and Lucent believed to have undisclosed patents.

The existing 3G Patent Platform Partnership Patent pool has little impact on FRAND protection because it excludes the four largest patent owners for 3G.

3G networks use time-division multiple access (TDMA) to divide access by time, creating time slots that are so short, users don't perceive interruptions.

TDMA is like dividing a paper into vertical strips, allowing each connection to last over multiple time slots spread out in time.

Each time slot is only a matter of milliseconds, making the connection appear continuous to the user.

In contrast, frequency division multiple access (FDMA) divides the cellular spectrum by frequency, giving each connection its own frequency band.

Check this out: GSM Frequency Bands

FDMA is like dividing the paper into horizontal strips, with each connection written on one strip.

This separation of connections makes it easier to manage and allocate resources in the network.

The 3G network also uses a combination of TDMA and FDMA, but it's not explicitly mentioned in the article section, so I'll stop here.