Posted by John Concrane on May 19, 2022 in Technology
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When the user equipment communicates with the AP1, because the equipment receives the interference signal of the AP2 with the same frequency, the user equipment will mistakenly think that the cell of the AP1 is being occupied by other devices in the cell at this time, so wait for the next time period to send. As a result, network performance is degraded. Not only multi-cell networking, this kind of interference problem will also occur when the Wi-Fi AP is very close. For example, although you have only one wireless AP in your home, if your next-door neighbor has an AP deployed on the same channel as you, CCI will also reduce the success rate of your device access. Sadly, most manufacturers put Wi-Fi AP’s default channel on the first channel when the device leaves the factory. In this way, the problem of interference is even more serious. If you find this problem, you might as well change the Wi-Fi AP channel at home, which will significantly reduce interference and increase Internet speed. The solution of Wi-Fi 6 is to distinguish the local cell from the interference cell by introducing BSS Coloring (Cell Color coding) technology into the MAC layer. In other words, when working on the same channel, the AP that interferes with each other will be distinguished by different color codes.
On April 30th, the day after entering GW, the Nippon Keizai Shimbun published an article saying that Toyota and Daihatsu would not only suspend car production during and after the Golden week due to a chronic shortage of semiconductors. Toyota will close all 14 factories in Japan from April 30 to May 8, the article said. Among them, the Takaoka plant in Toyota City, Aichi Prefecture will stop production of some production lines until May 9, and the Fujisong plant with Toyota car body in Kariya City, Aichi Prefecture will stop production until May 16. In addition to the second Shiga plant, which had previously announced an extension of the shutdown, Dafa will also increase the number of plants at the Dafen first factory and the head office from April 30 to May 8, extending the number of days of shutdown. In addition, the Kyoto plant is scheduled to stop production from May 18 to 19.
The system-on-chip (SoC) is the heart of the embedded architecture and is where the actual imaging processing takes place. On many occasions, the technical term “SoC” is colloquially equated with “processor”. In reality, however, SoCs contain more than that. In addition to single-core or multi-core parallel CPUs (central processing units), there are GPUs (graphics processing units), interface controllers (such as USB, Ethernet, I²C, etc.), internal bus systems, multimedia hardware (such as video encoding and video decoding), internal power management, and more, all contained within this single chip. In short – an SoC neatly integrates many of the core components in a PC into one.
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