Por que a tendência de ter o prefixo SSID começa como “Direct-xx”?

Question

Eu notei esta tendência que SSIDs WIFI agora começam com um prefixo de "Direct-xx" (ex: Direct-EK-Bravia).

Não consegui encontrar nada que aponte para um novo padrão ou requisito? Isto é apenas dizer que uma empresa (digamos, Intel) exige que todos os terminais wifi tenham um prefixo não variável dos 32 caracteres permitidos?

    

Answer 1

É porque esses dispositivos são configurados para WiFi-Direct .

From a protocol point of view a Wi-Fi direct connection is established using already existing mechanisms in a number of steps:

In a first step, the two devices that are to connect directly have to find each other. This is done by sending standard Wi-Fi probe request and response frames that include the Wi-Fi direct specific generic SSID “DIRECT-” and further Wi-Fi direct capability information. A device answering with a probe response frame uses the same SSID and includes vendor specific tagged information elements to also identify itself as a Wi-Fi direct device and gives further information such as its direct mode capabilities, device type and a name in readable format that can be presented to the user.

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The GO [Group Owner] starts to operate in Access Point mode, sending beacons with the negotiated SSID and a group formation bit set to 1, because the group formation has not yet been completed. The SSID is standardized to be "DIRECT-xy..." with xy being random characters/numbers and any postfix.

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