Research Article
Cooperative-diversity slotted ALOHA
@INPROCEEDINGS{10.1109/QSHINE.2005.14, author={ Wing-Hin Wong and T.F. Wong and J.M. Shea}, title={Cooperative-diversity slotted ALOHA}, proceedings={2nd International ICST Conference on Quality of Service in Heterogeneous Wired/Wireless Networks}, publisher={IEEE}, proceedings_a={QSHINE}, year={2005}, month={12}, keywords={}, doi={10.1109/QSHINE.2005.14} }- Wing-Hin Wong
T.F. Wong
J.M. Shea
Year: 2005
Cooperative-diversity slotted ALOHA
QSHINE
IEEE
DOI: 10.1109/QSHINE.2005.14
Abstract
We propose a cooperative-diversity technique for ad hoc networks based on the decode-and-forward relaying strategy. We develop a MAC protocol based on slotted ALOHA that allows neighbors of a transmitter to act as relays and forward a packet toward its final destination when the transmission to the intended recipient fails. The proposed technique provides additional robustness against fading, packet collisions and radio mobility. Network simulations confirm that under heavy traffic conditions, in which every radio always has packets to send, the proposed cooperative-diversity slotted-ALOHA protocol can provide a higher one-hop and end-to-end throughput than the standard slotted-ALOHA protocol can. A similar advantage in end-to-end delay can be obtained when the traffic is light. As a result, the proposed cooperative-diversity ALOHA protocol can be used to improve these measures of quality of service (QoS) in ad hoc wireless networks