About use062

use062 · 05-30-2022

802.11 uses csma/ca as the mac protocol.Every station senses the medium, if something is being sent, then they will set their NAV to the duration ID from the packet being sent weather RTS, CTS, DATA, ACK.RTS/CTS was introduced to mitigate the hidden ...

use062 · 05-31-2022

I found the answer here IEEE 802.11 MAC Dictionarythe relevant part:NAV (Virtual carrier sense)It is interesting that the RTS set its NAV covering to the end of whole RTS-CTS-DATA-ACK process. How about a RTS has not been ACKed with a proper CTS. Th...

use062 · 05-30-2022

to be honest i'm confused, from the book:Address 1: Receiver AddressThe receiver of a CTS frame is the transmitter of the previous RTS frame, so the MAC copies the transmitter address of the RTS frame into the receiver address of the CTS frame. CTS f...

use062 · 05-30-2022

i understood the paragraph you quoted as being exclusive to broadcast/multicast frames and not unicast frames, which need a frame exchange sequence which is an rts/cts exchange so my problem still persists. here is another reference from a networkin...

use062 · 05-30-2022

I got that management frames don't trigger the NAV, but the RTS is a control frame and not a management frame from the book (relevant sentence in bold):Request to Send (RTS)RTS frames are used to gain control of the medium for the transmission of “la...

use062 · 05-30-2022

Thank you very much for you reply,I didn't know that about the contention free period, but my question is about contention based period, apologies if that wasn't clear from the question. I did read the part about Duration from the book, but i still f...

Member Since	‎05-30-2022 07:40 AM
Date Last Visited	‎06-07-2022 09:27 AM
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purpose of NAV and its relation to the exposed node problem in 802.11

Re: purpose of NAV and its relation to the exposed node problem in 802

Re: purpose of NAV and its relation to the exposed node problem in 802

Re: purpose of NAV and its relation to the exposed node problem in 802

Re: purpose of NAV and its relation to the exposed node problem in 802

Re: purpose of NAV and its relation to the exposed node problem in 802