The fastest download speed is 100Mbps! A complete analysis of 4G LTE technology (Part 2)

　　No one can say for sure whether 4G can change people's lifestyles or even social forms, but compared with 2G and 3G, the fourth-generation mobile communication standard has given modern communications a more long-term advancement in many aspects. Based on the initial conception, the editor summarizes the following 6 advantages of 4G that we are more concerned about, which can also be regarded as the technical advantages of LTE:

　　1. Faster transmission rate

　　Faster communication speeds are a must. Looking back at the transmission rates of 1G and 2G mobile communications, they were only 9.6Kbps, and PHS could reach up to 32Kbps. The transmission rate of 3G reached 2Mbps, which seems to be much faster, but experts estimate that the fourth-generation mobile communication system 4G, which evolved from LTE, can reach 10Mbps to 20Mbps, and even up to an amazing speed of 100Mbps, which is obviously more impressive.

　　If 3G makes you feel like you are enjoying the spring breeze, 4G is full of passion.

　　2. Wider network spectrum

　　In order for 4G to achieve the ideal 100Mbps, operators must make substantial changes and research on the basis of 3G networks so that 4G can completely beat 3G in terms of bandwidth carrying capacity. According to AT&T executives who are researching 4G communications, it is estimated that each 4G channel will occupy 100MHz of spectrum, which is 20 times that of the WCDMA network.

　　3. More flexible communication methods

　　4G mobile phones will completely transform into small computers. Any visible object can become a 4G terminal, not just "bricks". People can communicate anytime and anywhere, download and transmit data in both directions, and play games online with strangers. There may be the annoyance of being permanently locked by GPS, but compared with the convenient maps and security it provides, you know which is better.

　　China Mobile TD-LTE on-site emergency communication vehicle

　　4. Higher intelligence

　　4G is more intelligent, which is not only reflected in the more intelligent design and operation of 4G terminal equipment, but more importantly, 4G mobile phones can realize many unimaginable functions: for example, 4G mobile phones can remind the owner of their itinerary in time according to setting factors such as environment and time; 4G mobile phones are more convenient and have broader sharing capabilities; 4G mobile phones can watch TV without worrying about traffic.

　　5. Higher communication quality

　　Although 3G can also realize various multimedia communications, 4G is better. The wireless multimedia communication service provided by 4G can transmit large amounts of data simultaneously through broadband channels. For this reason, 4G is also called "multimedia mobile communication."

　　6. Cheaper communication costs

　　Since 4G not only solves the compatibility problem with 3G in communication, but also introduces many cutting-edge communication technologies, which ensure that 4G can provide a highly flexible system operation mode, it is easier and faster to deploy 4G. In addition, when building a network, operators will consider gradually introducing it directly on the infrastructure of the 3G network, thereby effectively reducing various costs
.

　　The original analog communications only supported voice calls and could not transmit digital signals, so there is no comparability. Here we only compare the 2G, 3G and 4G wireless cellular standards, including: GSM (EDGE), CDMA 2000 (1x/EVDo), TD-SCDMA (HSPA), WCDMA (HSPA), and TD-LTE.

　　In addition, the peak data rates of two wireless transmission technologies, WLAN and Wi-Fi, are as follows:

　　WLAN IEEE 802.11a/b/g: peak data rate of 54Mbps;

　　WLAN IEEE 802.11n: Peak data rate <600Mbps.

　　4G LTE network speed test experience (Hong Kong)

　　While we are still struggling with 3G signals and network speed issues in China, many countries and regions in the world have begun to deploy and complete 4G LTE networks. You must be curious about how fast 4G is. In fact, the editor has collected the test data of the media experiencing 4G (SmarTone service) network speed in Hong Kong (test screenshots cited from VR-ZONE) for your reference:

　　4G network speed test screenshot 1

　　4G network speed test screenshot 2

　　For comparison, let's take a look at SmarTone 3G network speed:

　　3G network speed test screenshot 1

　　3G network speed test screenshot 2

　　Obviously, the speed of 4G LTE is about five times that of 3G. You can imagine that.