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Is it out of date?Wi-Fi 4 router who wants to consider replacement


Wi-Fi router is out of date?

 This time, let's look at the Wi-Fi router.The latest standard for Wi-Fi is "IEEE 802.11AX", commonly known as "Wi-Fi 6"."6" of Wi-Fi 6 means the 6th generation.For the first time in Wi-Fi 6, the name "Wi-Fi ○" was adopted, and back to the past standards, "Wi-Fi 5" for "IEEE 802.11ac", "IEEE 802.11N" for "Wi-Fi 4".Was the name.

 Wi-Fi 4と5以降では通信速度に格段の差がある。理論上の最大通信速度を見ると、Wi-Fi 6が9.6Gbps、Wi-Fi 5が6.9Gbpsであるのに対し、Wi-Fi 4はわずかに600Mbpsだ。Wi-Fi 4ルーターを使っている場合、これを買い替えるべきかどうかは大きな検討課題になる(図1)。

Wi-Fi 6または5ならOK、Wi-Fi 4は厳しい図1 Wi-Fiは規格によって最大通信速度が異なる。最新のWi-Fi 6は、理論上は最大9.6Gbpsで通信できる。1世代前のWi-Fi 5は6.9Gbps。これに対してWi-Fi 4は600Mbpsと遅い。今すぐWi-Fi 6にする必要がなくても、せめてWi-Fi 5にはしておきたい[画像のクリックで拡大表示]

 なお、Wi-Fi 4より前のルーターはもうお払い箱にしてよい。光回線で使うには通信速度が遅すぎるからだ(図2)。

11a/b/gはもはや論外!図2 Wi-Fi 4より前の規格には「Wi-Fi ○」という呼称はない。理論上の最大通信速度はわずか54Mbpsで、現在の基準にはそぐわない[画像のクリックで拡大表示]


02 / Jul / 2022 homeappliancesbrands

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