What are the 5G WiFi phones

Source: Internet
Author: User

5G Wi-Fi (802.11AC) is the fifth generation of Wi-Fi transmission technology, and running in the 5Ghz Radio frequency band (here is a misunderstanding, is not running in the 5Ghz band Wi-Fi is 5G Wi-Fi, Operating in the 5Ghz band of the Wi-Fi protocol standards include 802.11a (first generation), 802.11n (fourth generation, while running in 2.4Ghz and 5Ghz dual band) and 802.11AC (fifth generation), and only the use of the 802.11AC protocol Wi-Fi is the true 5G Wi-Fi). Higher wireless transmission speeds are the biggest feature of 5G Wi-Fi. The industry believes that 5G Wi-Fi entry-level speed is 433Mbps, which is at least three times times the current Wi-Fi rate, some high-performance 5G Wi-Fi can also reach more than 1Gbps.

Service Products

Bo Tong is the world's first to put forward this technology and the first to apply this technology and the most mature chip manufacturers, currently using Bo Tong 5G chip famous brand has TENGDA 11AC Gigabit wireless router, while the mobile phone has Apple phone 6, Samsung Galaxy S4 and above, HTC one, Millet 4, LG G2, Sony Z2 and above, Nubian Z7, Huawei Glory 6 and so on.

Standard

5G Wi-Fi is the birth of a good solution to the problem of WiFi now, first it runs in the high-frequency segment above 5GHz, bandwidth can be increased to 40MHz or even 80MHz or higher, the highest transmission speed to the 1Gbps, each second can transmit about 125MB content.

5G Wi-Fi is the fifth generation of Wi-Fi technology abbreviation. Wi-Fi technology was born in 1997, has now developed to the fifth generation. When the first generation of Wi-Fi standards appeared, by the process and cost constraints, the operating frequency of the chip can only be fixed at 2.4GHz, the highest transmission rate of only 2Mbps.

The subsequent 802.11a, 802.11b, 802.11g, 802.11n and other four WiFi versions of the standard, faster and faster, and now we generally use the 802.11n standard. In 2004, for example, the 802.11n was 10 times times faster than 802.11g before, and 50 times times faster than 802.11b earlier, covering a wider range. Wi-Fi chip transmission rate is getting higher, but until the 802.11n is still operating in the 2.4GHz frequency band, so the speed still can not meet the needs of people.

Real 5G WiFi

Although the mobile phone's WiFi chip supports a dual-frequency (2.4GHz and 5GHz) operation earlier, its protocol is still 802.11n and does not use the latest 802.11AC standards, and is not really a 5G WiFi, It can be simply seen as running a 802.11n wifi on the 5GHz band, with a discount on performance. If we use the highway to analogy 5GHz WiFi band, then the 802.11N standard will be Mercedes-Benz, and the 802.11AC standard will be a higher level, can be understood as sports cars.

The true 5G Wi-Fi is 802.11AC, which uses a chip that works at a frequency of 5GHz, and can cover both 5GHz and 2.4GHz frequencies. In addition to the faster, it can improve the wireless signal coverage of the small problem, although the 5GHz than 2.4GHz attenuation is stronger, difficult to pass through obstacles, but due to the larger coverage, considering the signal will produce refraction, the new standard will be more easily to all corners can receive signals.

Advantages and Disadvantages

Advantages

One solution to the network congestion: Wi-Fi is becoming overcrowded on the freeway. At present, the world's fastest Wi-Fi transmission speed of only 300Mbps (a few can reach 600Mbps), equivalent to only about 36MB per second transmission of content. It's not a problem when people use it to look at websites and mail. But today, with more and more complex usage requirements, old technical standards have become stretched. 5G Wi-Fi is about to solve this problem.

Second, improve the playback quality: The explosion of video traffic and increasing wireless devices, increased the burden of Wi-Fi network, causing users to watch the film is very easy to encounter playback is not smooth, the film download time is lengthy and so on. 5G Wi-Fi per second transmission speed of up to 125MB, so that the download speed per second about 30~45MB high-definition film transmission is not a problem.

Third, let the mobile phone more power: 5G Wi-Fi Another great advantage is energy-saving, because the same time to send more content, equipment can also enter the Low-power power mode faster. For example, Bo Tong's 5G Wi-Fi technology allows the action device to reduce the power consumption rate of 83%, so can extend the use of the device time.

Four-signal quality is better: The current 2.4GHz band Wi-Fi network "Run" is not only mobile phones, tablets, laptops, handheld game consoles, as well as a variety of mobile devices. A large number of devices can easily interfere with each other by piling up in a narrow band. Domestic 5G band less use, radio interference greatly reduced, signal quality has been greatly improved.

Disadvantages

As with many technological advances, 802.11AC is very complex. This is certainly a very bad thing, especially for the technology of the GM consumer market. So far, industry associations such as vendors and Wi-Fi alliances have done a lot to hide complexity from end users. So there is hope. However, 802.11AC increases the number of settings and selections between the transmission device and the receiving device. Therefore, it is difficult to set the user's expectations for the functionality of each device.

We've just described the power supply as one of the good things. However, the power supply is still a challenge in the 802.11ac, especially for devices that are high bandwidth data sources. To achieve the highest available bandwidth in 802.11ac, you need to use up to 8 Rd transport devices. By contrast, the current 802.11n allows a maximum of 4 transfer streams, but there are few devices with the ability to deliver 4 streams, mainly due to power supply and other RF challenges. The full implementation of the 802.11AC feature may take a long time.

The number of transmission devices and the power to drive these devices is not the only implementation challenge. 802.11N has so far not provided a functional beamforming (beamforming) is also part of the 802.11AC. This is just one example of this complex technique. This technology needs to be implemented to achieve the maximum data rate, because the technology is described in the file, which does not mean that the technology is easy to implement.

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