Delay Models of Single-Source Single-Relay Cooperative ARQ Protocols in Slotted Radio Networks With Poisson Frame Arrivals

In conventional (noncooperative) automatic repeat request (ARQ) protocols for radio networks, the corrupted data frames that cannot be correctly decoded at the destination are retransmitted by the source. In cooperative ARQ protocols, data frame retransmissions may be performed by a neighboring node (the relay) that has successfully overheard the source's frame transmission. One advantage of the latter group of ARQ protocols is the spatial diversity provided by the relay.