The fastest wireless network 802.11ac makes us not just get bored together

The fastest wireless network 802.11ac makes us not just get bored together

Today, we will also discuss the standard 802.11ac for WiFi wireless networks that we get tired of working with every day. However, you still need to clarify the relationship between WiFi and the technical standard 802.11ac before starting. Wi-Fi is a commercial identifier, which is not a technical standard and represents a wireless connection network. IEEE 802.11 is a wireless transmission Technical Specification developed by the Institute of Electrical and Electronics Engineers [IEEE]. It is actually a wireless network connection technical standard. It is used by WiFi, but WiFi not only includes 802.11ac technology, in the same way, 802.11ac is not only used by WiFi, but can also be used in other wireless communication fields.

2.4G 4G congestion 5g explicit advantages

Currently, most of the WiFi we use is in the 2.4G wireless band, using the 802.11b/g protocol. However, with the increasing number of devices in the 2.4G band, the channels in the 2.4-2.485GHz are very crowded, because all electronic devices such as wireless keyboards, wireless mouse, and Bluetooth work in this band. Low-frequency segments are generally used for data transmission capacity, and crowded channels can lead devices to seize resources, reducing the quality and effect of communication. In Wi-Fi products, 802.11b/g devices in the 2.401GHz-2.473GHz band use 11 22 MHz bandwidth channels. Many devices cause congestion and a small number of channels, insufficient bandwidth.

802.11n can work in 5G band

5G band

IEEE 802.11n technology with higher frequencies and higher bandwidths has emerged to solve the problem of band congestion of 2.4G. 802.11n can work in 5g frequencies, and the high-frequency segment has a higher bandwidth capacity and is not easily disturbed. The number of devices is much less than 2.4G. 802.11n can solve the problem of channel congestion and insufficient bandwidth. The channel bandwidth can reach 40 MHz, and the transmission speed can be improved through multiple MIMO input and output standards through multiple antennas. Generally, the peak speed of-Mbps can be achieved by 802.11n devices at home, which is also the reason why users often see the vro ID shown at a speed of mpbs. Although 802.11n has good performance, its shortcomings also exist. The high-frequency band attenuation is large, and the coverage is small. Generally, it can meet the needs of domestic users, however, the coverage of large office sites is inferior to that of 802.11b/g in the 2.4G band.

Faster 802.11ac

We can see that 802.11 of the development started from a and reached the current ac after B/g/n. To be accurate, 802.11ac began to be deployed on mobile phones in 2013. At that time, some flagship mobile phones gradually had the Wi-Fi network connection capability of 802.11ac. In 2014 of this year, high-end flagship mobile phones gradually came standard with 802.11ac WiFi modules. Apple iPhone 6, Macbook air, and airport have all been available, and Apple's entire line of latest product lines will not fall.

802.11ac

802.11ac works in 5g frequencies and supports up to 8 times of MIMO. It also supports connections from multiple terminals in the MIMO mode. The channel bandwidth can reach up to 160 MHz, it is 4 times higher than 802.11b/g. At 80 MHz bandwidth, the transmission speed is 433Mbps, while at MHz, the network speed is 866Mbps. Wireless networks are still affected by environmental conditions, interference, distance, and other objective factors. The actual rate is much lower than the theoretical rate, but it is greatly improved compared with the previous 802.11b/g. Test results show that if the 8-Mbps wireless router and network adapter are used for connection transmission, the actual wireless transmission speed can reach about 20 Mb/s, this clearly enables a wireless LAN to be truly a hundred megabytes of information.

Chip Solution

The popularization of 802.11ac also relies on mature and stable WiFi Chip Solutions. At this stage, the major 802.11ac chip solutions are provided with Qualcomm and Broadcom. Although Broadcom has launched a consumer-level e-market, it is still very powerful at the enterprise level. Its Wi-Fi chip solution is applied to most PCs, routers, network cards, and other devices around the world. With the maturity of the 802.11ac solution, more and more chip manufacturers are gradually able to provide WiFi Chip Solutions. This also increases the market competitiveness, reduces costs, and accelerates the popularization of the market. In addition to Broadcom, Cisco, Intel, Qualcomm Atheros, and mediatek have also launched related 802.11ac products. There are also a variety of grades, not only for enterprise level, but also for home market products.

Smart Home life

Thanks to advances in WiFi technology, the 802.11ac standard greatly improves transmission efficiency and makes wireless connections between more devices possible. This also sets off a change in the Smart Home life led by routers. In the future, the vro can change its role, not only as a network coordinator, but also as a central operator after being equipped with an intelligent system. We can use our mobile phones to control the power of household lights, air conditioners, water heaters, and other household electricity. These are all connected through routers and exist as the Central Commander.

Smart Home has taken shape, but it still takes time. This is a huge project. To put it bluntly, for ordinary home users, 802.11ac accelerates the wireless network speed, and we can change the habit of using computers to download or transmit things. We set up a small server on the vro to remotely download data from the vro and store data in the vro space. Laptops, mobile phones, or tablets can be accessed through the home wireless network anytime, anywhere. This makes it easier for us to watch movies and share office materials. Because 802.11ac is developed by IEEE, It is backward compatible with 802.11a/B/g/n products, and old devices can be used seamlessly without compatibility.

Universal access

802.11ac has technical advantages, but consumers still need to keep an eye on their purchase. Many 802.11ac NICs, known as Gigabit NICs, are only 2.4G and 5g, not just in the 5G band. 5G frequencies can improve transmission rate and reduce attenuation by means of MIMO technology. However, due to the high frequency, the attenuation still exists. However, the number of configurations supporting 802.11ac has gradually increased, and high-speed devices have gradually emerged in the market. The popularization of 802.11ac is coming soon.

With the maturity of the chip solution and the increasing competition, the price of 802.11ac equipment is gradually reduced. some well-known brands of Wireless WiFi have reached the range of 300 yuan, and there is a choice between-yuan. Of course, these 802.11ac devices may only be single-channel 80 MHz band 433 Mbps, but they do not reach 16 MHz 866Mbps high-speed rate, but it is basically enough for home users. With the increase in the number of cheap Chip Solutions, lower prices will be the driving force of 802.11ac devices. Of course, in addition to routers, devices and NICs must be upgraded to the corresponding ac level, and the user experience may not be significantly improved due to the impact of the environment and bandwidth speed, the upgrade of the entire network device requires a certain amount of time and cost.