https://www.commscope.com/blog/2018/wi-fi-6-fundamentals-basic-service-set-coloring-bss-coloring/#:~:text=Coloring%20also%20allows%20Wi%2DFi,detection%20(sensitivity%20thresholds)%20levels.
According to IDC, 802.11ax (Wi-Fi 6) deployment is projected to ramp significantly in 2019 and become the dominant enterprise Wi-Fi standard by 2021. This is because Wi-Fi 6 will deliver faster network performance and connect more devices simultaneously. Additionally, it will transition Wi-Fi from a ‘best-effort’ endeavor to a deterministic wireless technology that is now the de-facto medium for internet connectivity. using wireless at the station With a four-fold capacity increase over its 802.11ac (Wi-Fi 5) predecessor, Wi-Fi 6 deployed in dense device environments will support higher service-level agreements (SLAs) to more concurrently connected users and devices with more diverse usage profiles. This is made possible by a range of technologies that optimize spectral efficiency, increase throughput and reduce power consumption. These include BSS Coloring, Target Wake Time (TWT), Orthogonal Frequency-Division Multiple Access (OFDMA), 1024-QAM and MU-MIMO. In this article, we’ll be taking a closer look at BSS Coloring and how Wi-Fi 6 wireless access points (APs) can utilize this mechanism to maximize network performance by decreasing co-channel interference and optimizing spectral efficiency in congested venues. These include high-density environments such as stadiums, convention centers, transportation hubs, and auditoriums.
What is Basic Service Set Coloring?
Legacy high-density Wi-Fi deployments typically saw multiple access points assigned to the same transmission channels due to a limited amount of spectrum – an inefficient paradigm that contributed to network congestion and slowdowns. Moreover, legacy IEEE 802.11 devices were unable to effectively communicate and negotiate with each other to maximize channel resources. In contrast, Wi-Fi 6 access points are designed to optimize the efficient reuse of spectrum in dense deployment scenarios using a range of techniques, including BSS Coloring. This mechanism intelligently ‘color-codes’ – or marks – shared frequencies with a number that is included within the PHY header that is passed between the device and the network. In real-world terms, these color codes allow access points to decide if the simultaneous use of spectrum is permissible because the channel is only busy and unavailable to use when the same color is detected. This helps mitigate overlapping Basic Service Sets (OBSS). In turn, this enables a network to more effectively – and concurrently – transmit data to multiple devices in congested areas. This is achieved by identifying OBSS, negotiating medium contention and determining the most appropriate interference management techniques. Coloring also allows Wi-Fi 6 access points to precisely adjust Clear Channel Assessment (CCA) parameters, including energy (adaptive power) and signal detection (sensitivity thresholds) levels.
【 在 xiaoniaoniao 的大作中提到: 】
: 什么乱七八糟的，我wifi6的协议800页都快背出来了，也没见到这个功能
: 峰值速率wifi6比wifi5高一点点，但是这是数学层面的，实际上差不多。wifi6支持mcs12 13
: 你觉得wifi6速度快是因为芯片工艺先进了，性能更加强大
--
FROM 199.247.32.*