[manet] Query regarding IEEE 802.11 MAC
Debarshi Sanyal <debarshisanyal@gmail.com> Fri, 18 December 2015 15:27 UTC
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Date: Fri, 18 Dec 2015 20:57:29 +0530
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From: Debarshi Sanyal <debarshisanyal@gmail.com>
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Subject: [manet] Query regarding IEEE 802.11 MAC
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Hi, In the IEEE 802.11 MAC standard, if a node finds the medium idle for a duration >= DIFS, it directly accesses the channel. Otherwise, if the medium is busy, it waits for the medium to be idle for DIFS, then starts backoff counter and transmits when the counter reaches zero. I understand that in case of a retransmission of a packet (for which no ACK was received), the direct access is NOT allowed, i.e. it waits for the medium to be idle for DIFS, then starts backoff counter (with a doubled contention window) and transmits when the counter reaches zero. Could you please confirm if my understanding is correct? Regards, Debarshi Kumar Sanyal
- [manet] Query regarding IEEE 802.11 MAC Debarshi Sanyal