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Extended Interframe space (EIFS) is used in IEEE 802.11 based WLANs. If a previously received frame contains an error then a station has to defer EIFS duration instead of DIFS before transmitting a frame. This is because, although this station was not able to decode the frame, it could be that the intended receiver could decode the frame. It should have the opportunity to return an Acknowledgment frame; the EIFS ensures the transmission of the Ack can proceed without interference from those not able to decode the frame. This duration is calculated by the below method.

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  • Extended Interframe space (EIFS) is used in IEEE 802.11 based WLANs. If a previously received frame contains an error then a station has to defer EIFS duration instead of DIFS before transmitting a frame. This is because, although this station was not able to decode the frame, it could be that the intended receiver could decode the frame. It should have the opportunity to return an Acknowledgment frame; the EIFS ensures the transmission of the Ack can proceed without interference from those not able to decode the frame. This duration is calculated by the below method. EIFS = Transmission time of Ack frame at lowest phy mandatory rate + SIFS + DIFS (en)
  • Extended Interframe space (EIFS) est l'un des intervalles inter-trames utilisé par les réseaux WLAN de la norme IEEE 802.11. Il est utilisé à la place du DIFS dans le cas où une station a reçu une trame qu'elle est incapable de décoder ; elle doit alors attendre avant de retransmettre sur le medium. L'EIFS permet de laisser le temps à l'éventuel destinataire originel de cette trame d'envoyer un acquittement au point d'accès sans fil, permettant à la transmission de continuer sans interférences de la part des stations n'étant pas en mesure de décoder cette trame. L'EIFS est calculé de la manière suivante : (fr)
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  • Extended Interframe space (EIFS) is used in IEEE 802.11 based WLANs. If a previously received frame contains an error then a station has to defer EIFS duration instead of DIFS before transmitting a frame. This is because, although this station was not able to decode the frame, it could be that the intended receiver could decode the frame. It should have the opportunity to return an Acknowledgment frame; the EIFS ensures the transmission of the Ack can proceed without interference from those not able to decode the frame. This duration is calculated by the below method. (en)
  • Extended Interframe space (EIFS) est l'un des intervalles inter-trames utilisé par les réseaux WLAN de la norme IEEE 802.11. Il est utilisé à la place du DIFS dans le cas où une station a reçu une trame qu'elle est incapable de décoder ; elle doit alors attendre avant de retransmettre sur le medium. L'EIFS permet de laisser le temps à l'éventuel destinataire originel de cette trame d'envoyer un acquittement au point d'accès sans fil, permettant à la transmission de continuer sans interférences de la part des stations n'étant pas en mesure de décoder cette trame. (fr)
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  • Extended interframe space (en)
  • Extended Interframe Space (fr)
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