Understanding the Difference Between 3G and 4G Networks

Third Generation Technology

The term third generation (3G) refers to the third generation of wireless communication technologies. It surpasses earlier wireless systems by offering high-speed data transfer, maintaining active connections even during roaming and movement, and providing numerous other advantages. 3G technology is primarily used in mobile phones to enable internet access, data upload and download, voice calls, and video calls, due to its widespread availability compared to Wi-Fi, which requires users to be close to a router.

This technology is based on standards set by the International Telecommunication Union (ITU) under the global mobile telecommunications program known as IMT-2000, delivering broad-range services. Third generation technology consists of various technical standards such as W-CDMA, Wireless Local Area Networks (WLAN), cellular radio, and others. For a phone to connect to the internet using 3G, it must support the technology natively, require a service subscription, and use a SIM card for connection.

Data Transfer Speed

3G data transfer speeds range from 128 kilobits per second to 384 kilobits per second. When the connected device is moving quickly, speeds typically fall between 128 and 144 kilobits per second. When the device moves slowly—such as when carried by a person walking—the maximum speed of 384 kilobits per second can be achieved.

Key Features of the Technology

Compared to previous generations, 3G stands out with the following features:

• Significantly faster data transmission than earlier technologies.
• Improved quality for live audio and video streaming.
• Ability to stream online television channels.
• High-speed browsing of the internet.

Fourth Generation Technology

The term fourth generation (4G) refers to the fourth generation of wireless communication technology. It was first introduced by Sprint, a U.S.-based company, at the beginning of 2009 and has since become widely available across most regions of the United States. 4G is the latest advancement over 3G, offering speeds up to ten times faster. The demand for higher speeds arose due to the evolution of mobile devices and tablets, which now require fast connectivity to stream audio and video in real time.

Not all devices support 4G; they must be capable of transferring data at a minimum of 100 megabits per second. Mobile providers offer 4G services through Long-Term Evolution (LTE) or WiMax technology. Both rely on OFDM for data packaging and transmission. Additionally, 4G includes several other key technologies and standards, including:

• CDMA2000 EV-DO
• MIMO (Multiple Input Multiple Output)
• OFDMA

Debate Over Terminology

There is significant debate among telecom companies about labeling networks as 4G. According to the official definition by the International Telecommunication Union, no provider currently offers true 4G service. The term is largely used for marketing purposes, indicating networks that deliver faster download speeds than 3G—this is what matters most to consumers.

Data Transfer Speed

4G speeds vary by provider. Generally, download speeds exceed upload speeds. For example, Verizon, which uses LTE, achieves download speeds of up to 12 megabits per second and upload speeds of 5 megabits per second. Sprint, using WiMax, reaches download speeds of 10 megabits per second and upload speeds of 1 megabit per second.

Download: Up to 12 Mbps (Verizon, LTE)
Upload: Up to 5 Mbps (Verizon)
Download: Up to 10 Mbps (Sprint, WiMax)
Upload: Up to 1 Mbps (Sprint)

Advantages of the Technology

4G offers multiple benefits, including:

• Support for broadband services such as live video streaming, interactive multimedia, and internet access.
• Reliance on Internet Protocol (IP).
• High speed and large bandwidth capacity.
• Low cost per bit transferred.
• Compatibility with well-known network technologies like Bluetooth, WCDMA, and IEEE 802.11 standards.
• Backward compatibility with older technologies such as 3G.
• Support for a wide range of services based on Quality of Service (QoS) principles.

Comparison Between Third and Fourth Generations

If we compare the download speed of 3G to that of 4G, ignoring external factors affecting connection speed, 4G is approximately ten times faster than 3G. Under optimal conditions, 4G download speeds can reach up to 1 gigabit per second, while 3G tops out at 100 megabits per second. Upload speeds for 4G can reach 500 megabits per second, compared to just 5 megabits per second for 3G. The radio frequencies used in 4G transmission range from 2 GHz to 8 GHz, whereas 3G operates between 1.8 GHz and 2.5 GHz.

References

1. ^ ^{a b c d} Nadeem Unuth (October 13, 2016), "What Is 3G? - Definition and Technical Specifications", LifeWire, Retrieved July 15, 2017. Edited.
2. ↑ Liane Cassavoy (July 2, 2017), "What Is 4G Wireless?", LifeWire, Retrieved July 15, 2017. Edited.
3. ↑ Margaret Rouse, "4G (fourth-generation wireless)", TechTarget, Retrieved July 15, 2017. Edited.
4. ↑ Sascha Segan (May 16, 2012), "WiMAX vs. LTE: Should You Switch?", PCMag, Retrieved July 15, 2017. Edited.
5. ↑ Denise Pappalardo (May 21, 2007), "What you need to know about 4G", NetworkWorld, Retrieved July 15, 2017. Edited.
6. ↑ Maisie Ramsay (November 3, 2010), "What’s in a (4G) name?", WirelessWeek, Retrieved July 15, 2017. Edited.
7. ↑ Liane Cassavoy (March 20, 2017), "How Fast Is 4G Wireless Service?", LifeWire, Retrieved July 15, 2017. Edited.
8. ↑ "4g Technology Features", www.seminarsonly.com, April 15, 2016, Retrieved July 15, 2017. Edited.
9. ↑ Melanie Pinola (June 13, 2017), "How Fast Are 4G and 3G Internet Speeds?", LifeWire, Retrieved July 15, 2017. Edited.
10. ↑ "3G vs. 4G", Diffen, Retrieved July 15, 2017. Edited.