The 802.11ac Wi-Fi standard is just getting started, but the Wi-Fi Alliance and the Institute of Electrical and Electronics Engineers (IEEE) jointly announced the development of their successor standard 802.11ax last month. Although R&D is still at a very early stage, the IEEE has set a development focus for this new standard, the most critical of which is to increase network speed by a factor of four, allowing networking speeds for individual devices—even those with limited battery performance. - For the first time to reach the level of 1GB.
Although it sounds exciting, we don't have to be happy too early.
It is reported that the speed of networking has benefited from the new radio technology called MIMO-OFDA. MIMO refers to multiple-input multiple-output, that is, using multiple antennas to send multiple streams of data to a device. This technology has been applied since the 802.11n standard. OFDA is a variant of Orthogonal Frequency Division Multiplexing (OFDM), which has been widely used in 4G networks and previous Wi-Fi standards.
Huawei, the domestic hardware manufacturer (which will join the IEEE 802.11ax R&D team), has completed the MIMO-OFDA system test and achieved 10.53 Gbps networking speed in the lab using the existing 5 GHz Wi-Fi band. I believe that manufacturers and users can't wait to use this new technology, right?
But this may not be the case. At present, the "latest and fastest" 802.11ac standard has only been approved in January this year. Although the outside world has high expectations, most of the clients do not currently support the standard, and the compatible client is still very popular. slow.
The same is true for enterprise equipment. Although major WLAN vendors have introduced enterprise-class hardware to support the standard at the end of last year, the large-scale adoption of the market has not yet begun. This means that most businesses and hotspots are still using 802.11n or older Wi-Fi standards.
Because the speed of WLAN and client can only reach the same level, the promotion of infrastructure (access point) can only rely on a convincing business case and the massive popularity of 802.11ac clients. Clients still using 802.11g or 802.11n Wi-Fi technology can only get the matching networking speed - even if the network has been upgraded to 802.11ac. These slower clients will reduce everyone's overall network efficiency, even for 802.11ac reformers.
For these reasons, analysts generally believe that 802.11ac-based corporate activities will not begin until 2015.
What we need to worry about is not just a business case. 802.11ax needs to make huge technological advances to become a reality, and the ability of hardware manufacturers to design and produce related equipment will be increasingly challenged.
This is what 802.11ac is facing today. The true strength of this standard is amazing, but from the hardware and equipment on the market today, this strength only shows a small part. At the moment, it's hard to figure out when the true capabilities of 802.11ac will be fully realized. And before this moment, has the manufacturer turned its attention to 802.11ax? This is hard to say.
Another reality that needs to be considered - and often overlooked when talking about 802.11 technology innovations - is that handheld devices are the dominant Wi-Fi technology of the future.
For handheld devices such as tablets and smartphones, their biggest problem is the limited battery capacity. Most smartphones today use the 802.11n standard, and the MIMO level is the lowest, supporting only one stream of data. Mobile devices that support the 802.11ac standard are still rare, but they are indeed emerging. However, because of the limited battery capacity, such devices may only be limited to single data streams for 802.11ac support, which is far from the true strength of the standard.
The OFA technology proposed with 802.11ax does carry some hope because it can increase throughput without the need for additional transmitters. But the development of this technology is still at a very early stage, so we need to continue to pay attention to how 802.11ax can solve the battery limitations of portable devices.
Faster and stronger wireless networks are the trend of the future, and related technologies will develop faster and faster. This is undeniable. In the past 10 years, we have seen an amazing increase in data transmission rates on limited networks, and the future development of Wi-Fi networks will be similar.
But at the same time, device vendors need to take a step back and deploy the standards that have been adopted today to convince standard creators that their technology can be deployed across all product lines, especially portable devices.
In any case, 802.11 was born for mobility.
Hengstar designs and develops various industrial LCD displays for industrial control systems. There are multiple installation methods including: desktop installation, universal VESA mount, panel mount, flush mount and rack mount, making our monitors suitable for different types of industrial control and factory automation.
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