Mobility

Throughput-Delay-Reliability Tradeoffs in Multihop Networks With Random Access

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Executive Summary

In ad hoc networks, performance objectives are often in contention with each other. Indeed, due to the transmission errors incurred over wireless channels, it is difficult to achieve a high rate of transmission in conjunction with reliable delivery of data and low latency. In order to obtain favorable throughput and delay performances, the system may choose to compromise on its reliability and have nodes forcibly dropping a small fraction of packets. The focus of this paper is on the characterization of trade-offs between the achievable throughput, end-to-end delay and reliability in wireless networks with random access. The authors consider a multihop ad hoc network comprising several source-destination pairs communicating wirelessly via the slotted ALOHA channel access scheme.

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