RDT 2.0

Created
Created
2023 Oct 12 4:28
Editor
Creator
Creator
Seonglae ChoSeonglae Cho
Edited
Edited
2023 Oct 23 17:12
Refs
Refs

channel with bit errors

Just for a corrupted packet and packet loss is not considered
notion image
ACK, NAK 이용
bit error 가 발생할 수 있다고 생각해서 에러가 없는 경우와 에러가 있는 경우 두 가지를 나누어 설명
  • Assume underlying channel may flip bits in packet
  • ACK/NAK 신호는 완벽하다고 가정
a 1-bit sequence number is sufficient for this protocol, as it allows the receiver to know whether the sender is sending a new packet or retransmitting an old one
Sequence number
introduced from
RDT 2.0
 
논리적으로 순서 번호는 0과 1이면 충분하지만 sequence number state would be much larger
 
 
 
 
 

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