Throughput-delay-reliability tradeoff in ad hoc networks

Abstract—Delay-reliability (D-R), and throughput-delayreliability (T-D-R) tradeoffs in an ad hoc network are derived for single hop and multi-hop transmission with automatic repeat request (ARQ) on each hop. The delay constraint is modeled by assuming that each packet is allowed at most D retransmissions end-to-end, and the reliability is defined as the probability that the packet is successfully decoded in at most D retransmissions. The throughput of the ad hoc network is characterized by the transmission capacity, which is defined to be the maximum allowable density of transmitting nodes satisfying a per transmitter receiver rate, and an outage probability constraint, multiplied with the rate of transmission and the success probability. Given an end-to-end retransmission constraint of D, the optimal allocation of the number of retransmissions allowed at each hop is derived that maximizes a lower bound on the transmission capacity. For equidistant hops equally distributing the tot...

• Type: Journal
• Year: 2010
• Where: WIOPT
• Authors: Rahul Vaze
• Keywords: Ad Hoc Network, Computer Networks, Retransmission Constraint, Transmission Capacity, WIOPT 2010