The Wi-Fi chip based on the fifth-generation wireless LAN communication standard takes us one step further from the seamless Wi-Fi roaming city.
The fifth generation of Wi-Fi is coming, and it is not just about helping you connect wireless devices.
Before talking about this issue, we could n’t help but count the “crimes†of Wi-Fi: too few hot spots, network congestion, frequent disconnections, and weak signals. In these crowded public places, such as waiting halls and bustling commercial centers, Wi-Fi is virtually useless, and whether it can even be connected has become a standard for character inspection.
Traffic in big cities is getting worse. As a highway in the wireless Internet world, global Wi-Fi networks are also faced with the dilemma of traffic jams. Here "run" is mobile phones, tablets, laptops, handheld game consoles, and a variety of mobile devices. According to the statistics of the Wi-Fi Alliance in September 2011, the alliance member companies have now reached 450, Wi-Fi global users exceed 1 billion, and the total number of Wi-Fi certified products shipped has exceeded 2 billion, the average 2 million products are developed every year. At the same time, the demand for Internet access is also changing. Sending and receiving emails and browsing websites are only the most basic. People also hope to watch movies, play games, listen to music, and process various data.
But the world's fastest Wi-Fi transmission speed is only 300Mbps (a few can reach 600Mbps), which is equivalent to only transmitting about 36MB per second. In the days when people only used it to look at websites and handle mail, this was no problem. But today, in the face of increasingly complex usage requirements, the old technical standards have become stretched. Because this was originally a road expected to pass small cars, but suddenly flooded into passenger cars and large trucks, and the number is increasing.
5G Wi-Fi—Fifth-generation Wi-Fi solves this problem. It will increase the transmission speed to 1Gbps, and can transmit about 125MB of content per second. Taking high-definition movies with the highest transmission bandwidth requirements as an example, the data stream per second of a high-definition movie is usually between 30-45MB or even higher. 5G Wi-Fi not only meets the transmission conditions, the transmission of multiple high-definition movies is not a problem, but it also means that it can accommodate more users and will not be congested due to excessive numbers.
The manufacturer of this product is Broadcom, a wired and wireless communication semiconductor solution provider, and the world's largest provider of WLAN wireless interconnect chips. The company expects that by the end of 2012, digital electronic devices with 5G Wi-Fi chips will appear on the market.
This is good news. For the first time, 5G Wi-Fi has appeared on civilian products. It is produced by the industry's most representative company and should be more and more popular. The reason it is called the fifth generation standard is because it is the fifth of the US IEEE wireless interconnection local area network standards 802.11, named 802.11ac.
We can review the history to see what this somewhat difficult term is all about. In the global civil wireless network, the frequency band commonly used to transmit and receive signals is 2.4GHz, followed by 5GHz. The higher the signal frequency band, the higher the working frequency band of the Wi-Fi chip, and the more complicated the manufacturing process. In 1997, when the first-generation Wi-Fi standard appeared, due to process and cost constraints, the chip's operating frequency could only be fixed at 2.4GHz, and the maximum transmission rate was only 2Mbps, which is equivalent to only about 0.016MB per second Content-At the very beginning, Wi-Fi was just a trail.
But it soon became a highway, and subsequent standards such as 802.11a, 802.11b, 802.11g, and 802.11n became faster and faster. For example, 802.11n, launched in 2004, is 10 times faster than the previous 802.11g, 50 times faster than the earlier 802.11b, and covers a wider range. It's just that although the transmission speed of the Wi-Fi chip is growing like a helicopter, it still can't keep up with people's needs.
The new 5G Wi-Fi, which is 802.11ac, uses a chip with a working frequency of 5GHz and can cover both the 5GHz and 2.4GHz bands. In addition to being faster, it can also improve the problem of small wireless signal coverage. Although 5GHz is more difficult to bypass obstacles than 2.4GHz, because the coverage is larger, considering the signal will be refracted, the new standard will make it easier Signals can be received in all corners; another major advantage of the new standard is energy saving, and the efficiency of power usage is 6 times that of the previous generation. Because more content is transferred at the same time, the device can also enter a low-power power-saving mode faster.
Faster throughput and more comprehensive coverage have made 5G Wi-Fi a veritable information highway. Today, mobile Internet terminals are popular, which means that this network has more possibilities in the future.
There are two major organizations that play a key role in this process, namely the IEEE and Wi-Fi Alliance.
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