Basically, Slotted-ALOHA is meant to be an improvement upon ALOHA due to the introduction of time slots right? But if nodes are waiting for the next time slot to transmit a message, then more messages are going to be transmitted at the same time because they'll all be waiting for the the same moment in time to send, and therefore collisions would be more frequent...
Or is it a case of, different nodes have different timeslots?
Or am I totally missing the mark here?
2007-01-11 12:43:58 · 2 answers · asked by litleshortarse 1 in Computers & Internet ➔ Computer Networking
back the truck up, is this english
2007-01-11 12:54:20 · answer #1 · answered by idhard2find&looking 4 · 0⤊ 0⤋
Slotted ALOHA turns out to make collisions easier to detect, as everyone will start transmitting at the same time. Yes, if there is a collision, you get garbage and everyone has to back off.
The win, however, comes if only one station elects to transmit in the slot. After the collision period, it's clear that the station is the only transmitter, so its data gets sent without risk of collision in the remainder of the slot. This is especially important in wireless due to the hidden node problem.
2007-01-14 22:07:45 · answer #2 · answered by tony1athome 5 · 0⤊ 0⤋