The differences between WiFi6 and WiFi7

Wi-Fi 6 (802.11ax) and Wi-Fi 7 (802.11be) are different versions of wireless network technology, which differ in terms of speed, capacity, power consumption and connection density. The following are the detailed differences between Wi-Fi 6 and Wi-Fi 7:

• Speed: The maximum speed of Wi-Fi 6 is 9.6 Gbps, while the maximum speed of Wi-Fi 7 is expected to exceed 30 Gbps. This means that Wi-Fi 7 will offer faster download and upload speeds to meet the growing data demands.

• Capacity: Wi-Fi 6 can handle data transmission from multiple devices simultaneously by using OFDMA (Orthogonal Frequency Division Multiple Access) technology, thereby enhancing network capacity. Wi-Fi 7 will further improve OFDMA technology and introduce more multiple access technologies to provide higher capacity and better network performance.

• Power consumption: Wi-Fi 6 introduces target-Triggered Transmission (TWT) technology, which can reduce the power consumption of devices and extend battery life. Wi-Fi 7 will further improve TWT technology and introduce more power-saving functions to further reduce the power consumption of devices.

• Connection density: Wi-Fi 6 can handle more device connections, supporting up to hundreds of devices to connect simultaneously. Wi-Fi 7 will further increase the connection density and is expected to support thousands of devices to connect simultaneously, making it suitable for high-density environments such as sports venues and conference centers.

• Security: Wi-Fi 6 introduces the WPA3 security protocol, providing more powerful encryption and authentication functions to protect the network from malicious attacks. Wi-Fi 7 will further enhance security and introduce more security features to deal with the growing cyber threats.

  Overall, Wi-Fi 7 is a further improved and upgraded version of Wi-Fi 6, offering higher speed, capacity, power consumption and connection density. It will meet the demands of future wireless networks, support more device connections and faster data transmission speeds, and provide users with a better network experience.
  

Multi-link Transmission Technology (MLO

Multi-link transmission technology is a technique that simultaneously transmits data to multiple links. It can enhance the reliability of data transmission, bandwidth utilization and transmission speed.
Multi-link transmission technology can be achieved in the following ways:

• Load balancing: Distribute data across multiple links to balance the load on each link and improve bandwidth utilization.

• Redundant transmission: Data is simultaneously transmitted to multiple links. When one link fails, data can continue to be transmitted through other links, thereby enhancing the reliability of transmission.

• Parallel transmission: Dividing data into multiple parts and transmitting them simultaneously through multiple links to enhance transmission speed.

• Path selection: Based on network conditions and link quality, the optimal path is chosen to transmit data, thereby enhancing the efficiency and reliability of transmission.

Multi-link transmission technology can be applied to various network environments, including local area networks, wide area networks and the Internet. It can be used to enhance the performance and reliability of networks, and is particularly suitable for application scenarios such as large-scale data transmission, real-time streaming media and cloud computing.

Multi-resource Unit (MRU）

Multi-resource unit refers to a design pattern in computer systems, which includes multiple processor cores, multiple memory controllers and other resource units. This design pattern aims to enhance the performance and throughput of computer systems.

In a multi-resource unit, each processor core can independently execute instructions and can simultaneously access multiple memory controllers. This can avoid the bottleneck of a single resource and improve the parallelism and efficiency of the system.

The design of multi-resource units can be achieved in various ways, such as multi-core processors, multi-channel memory controllers, etc. Among them, multi-core processors integrate multiple processor cores on a single chip, enabling each core to independently execute instructions. The multi-channel memory controller can access multiple memory channels simultaneously, increasing the bandwidth of memory access.

The design of multi-resource units can significantly enhance the performance and throughput of computer systems, especially when dealing with large-scale parallel tasks. However, it also brings some challenges, such as resource allocation and communication overhead. Therefore, when designing multi-resource units, various factors need to be comprehensively considered to achieve the best performance and efficiency.
In Wi-Fi 7, the concept of Multi-Resource Unit (MRU) was introduced, that is, one user can correspond to the combination of multiple rus. For example, a user can use a combination of 26-tone RU and 52-tone RU simultaneously, or a combination of 484-tone RU and 996-tone RU. This flexible resource allocation method enables Wi-Fi 7 to better adapt to the communication requirements in different scenarios, improve the utilization rate of network bandwidth and the communication experience of users.

Preamble Puncturing

Preamble punching is a technique used for data storage and transmission. It is usually used on media such as magnetic tapes and paper tapes, representing binary data by punching holes in the media.

The principle of preamble punching is to convert binary data into a series of holes and non-holes, where holes represent 1s in binary and non-holes represent 0s in binary. The original binary data can be recovered by reading the combination of holes and non-holes on the media.

On magnetic tapes, preamble punching is typically used to mark the start and end positions of data, as well as other important information. On paper tape, punched preamble codes are typically used to store binary data, such as computer programs or data files.

Preamble punching is a simple and reliable data storage and transmission technology, but it has a relatively low storage density and a slow read and write speed. With the advancement of technology, preamble punching has gradually been replaced by more efficient data storage and transmission technologies, such as disk drives and solid-state drives.

Finally, to sum up, compared with Wi-Fi 6/6E, Wi-Fi 7 has a maximum transmission rate of 30Gbps, which is a significant improvement over Wi-Fi 6's 9.6 GBPS. In terms of bandwidth, Wi-Fi 7 can reach up to 320MHz at most, which is exactly twice the size of Wi-Fi 6 with a maximum of 160MHz. In terms of modulation methods, Wi-Fi 7's 4096-QAM can adapt to stronger transmission variations compared to Wi-Fi 6's 1024-QAM. Ultimately, with the stronger anti-interference ability of Wi-Fi 7 in complex environments, according to relevant information, the overall rate of Wi-Fi 7 has the potential to reach about three times that of Wi-Fi 6.