本帖最后由 forgot 于 2023-12-13 11:40 编辑
WiFi7-MLO(Multi-link)-IPQ9574-QCN6274- Multi-band data transmission - Improve spectrum utilization
Now WiFi technology is more and more advanced, WiFi product iteration is also very fast, currently WiFi7 is circulating on the market, many people do not know the use of WiFi7, it looks like there is no difference with WiFi6, today we take a look at WiFi7 in one point, you will understand the difference between it and WiFi6.
Of course, there are many chips for WiFi7 routers on the market, but for industrial projects, most of them still use Qualcomm chips, because it is more stable and the performance is better than other chips, such as IPQ9574,IPQ9554, IPQ9574,IPQ9554, IPQ9574,IPQ9554. The main chips used for WiFi7 network cards are QCN9274 and QCN6274.
Of course, if it is a home router, the requirements for the chip may not be so high, but it also depends on the level of the product, high-end and affordable products, and ultimately depends on the choice of use!
The key benefits of Wi-Fi, including consistently ultra-low latency and improved performance in dense environments, will serve: 8K A/V streaming, AR/VR, cloud gaming, interactive applications, Industrial iot and Industry 4.0, remote diagnostics and remote surgery.
Supports multi-link operation (MLO) to automatically acquire data in the fastest way.
MLO means that WiFi 7 can access three WiFi bands (6GHz, 5GHz and 2.4GHz) at the same time, and freely switch channels between bands. As shown in the figure below, WiFi 7 AP and STA communication can be carried out in 5G and 6G at the same time. Two frequency bands will speed things up. Alternatively, two bands can be used simultaneously to share redundant/unique data, increasing reliability with ultra-low and precise latency. WiFi 6E is only available in one communication band.
The core feature of Wi-Fi 7 should be Multi-link, that is, MLO. The features of MLO are of great value for Wi-Fi terminals.
Multi-link is to put a number of Wi-Fi baseband (even can be understood as the original Wi-Fi chip) into a Wi-Fi chip, and then when used, multiple bands can work at the same time, and do not interfere with each other. In terms of content details, the RF side will become more complex, requiring more channel isolation, stronger attenuation capacity, and common antennas. The MAC side also needs to deal with some cooperation problems when multiple links work at the same time.
The direct benefit of Multi-link is actually on the terminal side, not the AP side. In fact, long before Wi-Fi 7, the AP side has long been "Multi-link".
In Wi-Fi 7, because the STA side implements Multi-link, then the AP side needs to be modified to allow a single node to establish a multi-link connection.
MLO advantages and application scenarios
Improved throughput: MLO greatly improves the throughput of wireless networks by transmitting data in multiple frequency bands simultaneously, making it particularly suitable for high-bandwidth applications.
Enhanced reliability: With MLO, devices can be connected to multiple frequency bands at the same time, and when interference or signal attenuation occurs in one frequency band, they can still maintain a stable connection, providing more reliable data transmission.
As the next generation wireless network standard, Wi-Fi 7 leads the future of wireless communication with its new features OFDMA and MLO. By increasing the efficiency of spectrum utilization and enabling multi-link operation, Wi-Fi 7 will deliver a faster, more stable and efficient wireless network experience. The introduction of OFDMA and MLO has brought a huge breakthrough to Wi-Fi 7, enabling wireless networks to better meet the growing data needs and application scenarios.
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