Technical Analysis Of The HSN AP One by HSN Chief Technology Adviser Frank Cui
Frank Cui:
Chief Technology Adviser, HSN Bkockchain/Big data expert. Ph D. from Electrical Engineering department of Tsinghua University. Experienced in Blockchain Technology principle and developments, Big Data, Fintech. Multiple Papers on international journals indexed in IE ( IEEE on Magnetics editor) First prize of Beijing Science and Technology National Outstanding Patent prize. International assignments in US, UK , Japan, etc. for 10 years, and rich experiences in R& management and developments.
With the intellectualization of mobile terminals and the increasing demand for wireless coverage, the ubiquitous WiFi wireless network is changing our lives from offices, houses to public places. Wireless AP (access point) is the core of WiFi wireless network. It is the gateway for mobile users to enter the backbone of wired ethernet. Therefore, in order to effectively improve the overall performance of wireless networks and enjoy the real pleasure of high-speed network, high-performance wireless AP must be equipped.
Thus, on October 11, the HSN project officially launched the first wireless access point (AP) hardware product HSN AP One. This product supports multi-channel, multi-input and multi-output, beamforming, interference suppression, easy maintenance and other features. It has obvious technical and performance advantages compared to other products on the market, and reflects the HSN team’s high attention and continuous investment in technology, products and customers.
The main features of this product include:
1. Supporting MU-MIMO technology; thus greatly increasing the number of concurrent users
In the 802.11n era, many consumers may hear the word “MIMO”. Single user MIMO (also known as SU-MIMO, i.e. Single User Multiple Input Multiple Output) technology can be simply understood as multiple cutting of transmission data, and then synchronous transmission through multiple antennas. The advantage of this method is to increase the data transmission speed of a single device without occupying extra spectrum range. In addition, it can also increase the receiving distance of wireless signals. Therefore, in 802.11n era, SU-MIMO technology is the most effective means to improve Wi-Fi transmission efficiency.
SU-MIMO also has its own shortcomings, that is, it will produce MIMO gap problem. So what is the MIMO gap? Because the current wireless terminal equipment is usually equipped with only 1–2 antennas, while the common wireless router or wireless AP (access point) equipment is equipped with 3–4 antennas. This makes the transmission of wireless data must be queued one by one, that is, the wireless router using SU-MIMO technology can only establish a transmission connection with one wireless terminal at the same time, which makes it difficult for the wireless terminal to occupy all the transmission channels and exert the maximum performance of the wireless router. This phenomenon is called MIMO gap.
However, after entering the era of 802.11AC WAVE 2, MU-MIMO technology has been adopted by a large number of wireless routers and wireless terminals to solve the problem of MIMO gap. As long as the corresponding wireless routers and terminals support MU-MIMO technology, the use of MU-MIMO technology can establish an independent “space flow” for each terminal at the same time, so that wireless data can be sent to multiple terminals at the same time, which greatly improves the overall performance of wireless transmission.
For example, 802.11AC wireless router with four antennas supporting 4x4SU-MIMO architecture can only perform single-stream transmission rate when connected to traditional single-antenna wireless terminals, i.e. the theoretical maximum rate is 433Mbps, although the overall theoretical transmission rate can reach 1.73Gbps at 5GHz band, and the other 1.3Gbps capacity will be idle at the same time. However, for 802.11AC Wireless Router Supporting 4x4 MU-MIMO architecture, when all connected wireless terminals support MU-MIMO technology, the wireless router can connect and transmit with up to four terminals at the same time, so that the total capacity of the router can be fully utilized and the idle situation can be greatly reduced.
HSN AP One, which supports 802.11AC WAVE2 specification, can support a large number of client terminals to connect to the network at the same time, and provide higher throughput and better user experience.
2. Restraining interference by Beam forming technology
With the development of wireless network, the number of base stations is in great demand, and the cost of base station installation is relatively high. In this case, it is particularly important to increase coverage and overcome wireless interference. Beam forming is a combination of antenna technology and digital signal processing technology, which is used for directional signal transmission or reception. Simply speaking, the aim of this technology is that routers can intelligently identify the location of the expected paired terminals. The routers themselves have multiple antennas and can adjust their phases. By controlling the phases of multiple antennas, the transmitted signals can get maximum gain at the terminals.
Therefore, it is based on MIMO and requires routers or wireless AP to have multiple antennas, so that signal processors at the receiving end can synthesize all signals received by multiple antenna arrays by weighting them to form desired signals. Beamforming does not require the use of special antennas or other wireless subsystems to improve the performance. Thus, it is more efficient and several times higher than other digital signal processing technologies, such as the introduction of space-time block code (STBC) and low-density parity-check code (LDPC). It can be applied in the environment of family and enterprise.
HSN AP One provides comprehensive support for beam forming through MU-MIMO technology, which can significantly improve the signal-to-noise ratio of the receiver. Better signal quality can be obtained even when the receiver is far away.
3. Supporting cloud remote management, greatly simplifying service and maintenance
HSN AP One can automatically connect to the HSN cloud management platform, so it can not only get the latest version updates in time, get the highest security and powerful function upgrades, but also make remote diagnosis, maintenance and repair by service engineers directly through the cloud platform when users encounter problems, which greatly saves the time needed for users to solve problems, providing Realtime Response, Fast Diagnosis and Remote Recovery.
HSN AP One also has a number of other market-leading technological innovations, which makes it has a significant advantage compared with competing products. This also highlights the strategic vision and development direction of HSN project team in terms of technology development, physical products and long-term cultivation.
HSN AP One has been launched and support purchase: https://www.hsn.link/hsnapone.html
In addition, in order to build an ecology and accelerate the progress of project research and development, HSN has not only put efforts on the product, but also launched the Protector Master Node (PMN) Program, so that community users can participate in the project , and jointly promote the ecological construction of HSN. More details on: https://www.hsn.link/pmn.html
In the near future, HSN will release a series of high-quality products to meet the different needs of enterprises, households and consumers, and provide strong support and continuous power for the deepening development of the whole project.
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