[pco]== sync, corrected by elderman ==Wireless connectionWith more equipment, wifi has become a common way of connecting to the internet. The wifi connection that we now use, most of it runs at a frequency of 2. 4 ghz, where the bandwidth is up to 20 mhz in order to ensure coexistence with bluetooth, but with a shorter protection interval. However, as demands on the speed, stability, etc. Of wireless connectivity are increasing, the 5ghz wifi in the higher frequency segment emerges. Our daily call for 5g wifi is a wireless wifi connection that runs in the fifth generation of the 5ghz band, which is out of line with what we call 3g and 4g communications technology。
5g wifi wireless connection resolution
In addition to the analysis of 5g wifi, a series of linked transmission tests were conducted in the post-page section of our article, providing a range of data for consumer visualization. As a result, as long as the network route and speed did not become bottlenecks, the wifi working in the 5ghz band was more than 50 per cent faster than the 2. 4ghz band, with detailed reference to simple tests in the latter section。
Wifi's getting crowded
Whether or not we often feel better at home, when there are too few hot spots, network congestion, frequent breakouts, weak signals and often no connections in densely populated public places. This is the state of existence of the now overcrowded 2. 4 ghz wifi, which is seriously overloading and disrupting many of its problems as a matter of urgency。
Ever try not to connect to public wifi
If the wifi under 2. 4ghz is compared to the city's information-transmission road, the global wi-fi network faces a time of traffic jam. “running” here are mobile phones, tablets, laptops, handheld games, and a variety of mobile devices, many of which make the 2. 4-ghz bands very crowded and often interfere with each other. By september 2011, the wi-fi alliance had produced statistics, and its member enterprises had now reached 450, with more than 1 billion wi-fi users worldwide, and a total of more than 2 billion products with wi-fi certification had been shipped. On average, 2 million products had been developed each year, and large equipment and chaotic wireless wi-fi network designs had overburdened wifi in its traditional frequency。
More equipment
Currently, the fastest wi-fi transmission rate in the world is only 300 mbps, equivalent to only about 36 mbs per second. Concrowding on information highways will slow down in the first place, and therefore transmission rates will inevitably decrease and will be difficult to qualify. This, of course, has no effect if only a browsing of websites or incoming and outgoing mail is undertaken, but it may become a bottleneck between mobile devices such as mobile phones and internet bandwidth if there is to be a large flow of data transmission, including high-resolution videos, online videos, etc. Because it was supposed to be a road that was expected to pass by small cars, it suddenly surged into buses and large trucks, and in increasing numbers。
5g wifi
The birth of 5g wi-fi is a good solution to the problems that wifi now faces, starting with a high frequency segment operating above 5ghz, a bandwidth that can rise to 40 mhz or even 80 mhz or higher, and the speed of transmission up to 1 gbps, which can transmit about 125 mb content per second。
5g wi-fi is the acronym for the fifth generation of wi-fi technology. Wi-fi technology was born in 1997 and has now reached its fifth generation. When the first generation of the wi-fi standard emerged, it was limited by process and cost, with the chip operating at a fixed frequency of 2. 4 ghz and a maximum transmission rate of only 2 mbps, equivalent to only about 0. 016 mb per second。
Communication technology and wifi development experience
Four wifi versions of 802. 11a, 802. 11b, 802. 11g, 802. 11n and more rapidly followed, and now we generally use 802. 11n. In 2004, for example, 802. 11 n was 10 times faster than the previous 802. 1g, 50 times faster than the earlier 802. 1b, and the coverage was wider. Wifi chips have a growing transmission rate, but up to 802. 11n they were still operating on the 2. 4ghz frequency range, so the speed still does not meet the needs of the population。
Real 5g wifi
Although the wifi chip, which had previously had a mobile phone, supported the operation of double frequency (2. 4 ghz and 5 ghz), the agreement used was still the 802. 11n standard, did not use the latest 802. 11ac standard, was not a true 5g wifi and could simply be regarded as using the wifi of 802. 11n on the running 5 ghz band, with a reduction in performance. If we compare the highway to the wifi band of 5 ghz, the 802. 11n standard would be a mercedes, while the 802. 11ac standard would be a higher level, understood as a running car。
Wifi evolution
The real 5g wi-fi is 802. 11ac and uses chips working at a frequency of 5ghz to cover both 5ghz and 2. 4 ghz. In addition to being faster, it could improve the low coverage of wireless signals, although 5ghz is more in decline than 2. 4 ghz and difficult to cross through the barrier, given the greater coverage and the refraction of the signal, the new standards will make it easier to get signals from all corners。
Equipment support is key
The number of mobile phones supporting the 5ghz band is not particularly large, and the more popular are miphone 2a, samsung galaxy s4, htc one and iphone, which can be expected to join in support of 5g wifi when more and more mobile phone manufacturers, both domestic and foreign, are launching new products, in which motor has recently developed wirelessly connected integrated monochips to support 5ghz bands, and the wave of 5g wifi is about to arrive。
Equipment replacement costs are temporarily higher
Despite the many advantages of 5g wifi, the market-based routers supporting 5g wifi remain relatively small and relatively expensive, which increases the cost of replacing routers for businesses. Although we often find ourselves in places like cafes where there are too many people who are not connected to wifi or who are in an unstable state, and it should be possible to replace a dual-frequency router, it is clear that the commercial router will not cost 100-300 dollars more than the traditional router to replace it when there is not yet a substantial rigid demand. But consider whether it would be attractive to you to see a coffee shop branding a 5g wifi connection at a time when the handheld is already universal
Summary of strengths
5g wifi advantages
1. Addressing network congestion
Old technical standards have become stretched in the face of increasingly complex demand for use. 5g wi-fi has a wider channel of choice to solve congestion problems。
2. Enhancement of broadcast quality
The explosive growth of video traffic and the increasing availability of wireless devices have added to the wi-fi network burden, making it easy for user consumers to view videos with problems such as poor playtime and lengthy download time. 5g wi-fi transports up to 125m per second, leaving no problem with high-resolution film transmissions at about 30-45m per second。
3. More energy efficiency
As more content is transmitted at the same time, the equipment can also move more quickly into low-power power-saving models. For example, the 5g wi-fi technology of jci allows action units to reduce their power consumption rate by 83 per cent, thereby prolonging their use。
4. Better signal quality
At present, there is severe overcrowding on the wi-fi network in the 2. 4-ghz band, and a large pile of equipment in a narrow band can easily interfere with each other. The 5g bands in the country are less used, radio interference is significantly reduced and the quality of signals is greatly improved. In addition, while 5ghz is more difficult than 2. 4 ghz to bypass directly, given the greater coverage, the new standards will make it easier for signals to reach all corners, given the refraction of signals. In the future, with extensive use of 5g wi-fi, mobile phones will become a reality through wi-fi to control home television, refrigerators, washing machines。
Attached 5g wifi bandwidth velocity test
Test one: we use the mobile phone that supports 5g wifi to lock out the frequency bands, including 5ghz and 2. 4ghz, and then run sped test, and the server selects guangzhou for five speed tests to take an average of the speed of downloads. The results of the tests were for reference purposes only, owing to factors such as the state of the network。
Lock frequency
Trust space
As can be seen from the figure above, in the frequency band of 2. 4 ghz, the wifi hotspots are numerous, and the number of hot spots in a single channel is large, causing congestion; the channel in the 5 ghz band is much broader than the 2. 4 ghz band, and even though there are many hot spots in the same channel, the wider channel can have good network performance。
Automatic mode and 5ghz frequency test results
2. 4 ghz-band test results
Average: automatic mode 15. 746 mbps, 5ghz band 15. 86 mbps, 2. 4ghz band 9. 364 mbps
Average: automatic mode 20. 644 mbps, 5ghz band 12. 726 mbps, 2. 4ghz band 10. 36 mbps
The test results showed that, in automatic and 5ghz band models, the down-row speed was more than 50 per cent faster than the 2. 4 ghz band, while the up-line speed was close to 30 per cent. As long as routers can support 5ghz bands, mobile phones in automatic mode are smartly adjusted to signal, etc., without user involvement. When routers and grid speeds are no longer a transmission speed bottleneck, 2. 4ghz bands are crowded and jamming and their impact on speed is significant。
Test two: we use iperf software to record the speed of transmission of 5ghz route to cell phone, and we use cisco enterprise router。
First, we see better signals in the office in the 5ghz band, so the automatic mode and the 5ghz band are both very strong at down speeds, close to 100 mbps; the corridor position, where the signal is reduced and decreased considerably, is still much faster than the 2. 4ghz band; and the company's signal outside is weaker, falling further, but still leads。
Summary
The emergence of 5g wifi is the product of our constant demand for wireless connections, with higher transmission speeds, wider frequency channels, which can reduce the crowding and disruption of the faith, all of which are its virtues. Now that the technology is becoming widespread, and chips, equipment, etc. Are being updated, 5g wifi is bound to be the mainstream over time. With the development of wifi technology, the era of seamless integration between our mobile and wifi networks is slowly coming。
