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Selective Repeat is part of the automatic repeat request (ARQ). With selective repeat, the sender sends a number of frames specified by a window size even without the need to wait for individual ACK from the receiver as in Go-Back-N ARQ. The receiver may selectively reject a single frame, which may be retransmitted alone; this contrasts with ...
Automatic repeat request (ARQ), also known as automatic repeat query, is an error-control method for data transmission that uses acknowledgements (messages sent by the receiver indicating that it has correctly received a message) and timeouts (specified periods of time allowed to elapse before an acknowledgment is to be received) to achieve ...
This re-transmission process is known as ARQ (automatic repeat request). The problem with Stop-and-wait is that only one frame can be transmitted at a time, and that often leads to inefficient transmission, because until the sender receives the ACK it cannot transmit any new packet.
One common simplification of selective-repeat is so called SREJ-REJ ARQ. This operates with w r =2 and buffers packets following a gap, but only allows a single lost packet; while waiting for that packet, w r =1 and if a second packet is lost, no more packets are buffered. This gives most of the performance benefit of the full selective-repeat ...
“The notion of lather, rinse, repeat — let’s do the same thing in Gaza we’ve done for decades isn’t going to sustain,” the White House official said of how Trump and his team got to ...
In this post from WTNH News 8 in New Haven, Connecticut, police keep a watchful eye on a gray seal pup who mysteriously made his way into downtown. This isn’t the first time the young seal left ...
Boeing's quality issues and Airbus' supply chain problems have created a global jet shortage. American Airlines cut routes amid delayed 787s, while Ryanair lowered its capacity outlook for 2025.
Three types of ARQ protocols are Stop-and-wait ARQ, Go-Back-N ARQ, and Selective Repeat ARQ. ARQ is appropriate if the communication channel has varying or unknown capacity, such as is the case on the Internet.