Ad Hoc Wireless Networks: Protocols and Systems
Ad Hoc Wireless Networks: Protocols and Systems
Geometry of information propagation in massively dense ad hoc networks
Proceedings of the 5th ACM international symposium on Mobile ad hoc networking and computing
A scalable model for channel access protocols in multihop ad hoc networks
Proceedings of the 10th annual international conference on Mobile computing and networking
Proceedings of the 11th annual international conference on Mobile computing and networking
Overhaul of ieee 802.11 modeling and simulation in ns-2
Proceedings of the 10th ACM Symposium on Modeling, analysis, and simulation of wireless and mobile systems
Analytical modeling of MAC protocol in ad hoc networks: Research Articles
Wireless Communications & Mobile Computing
Improving Throughput and Fairness by Reducing Exposed and Hidden Nodes in 802.11 Networks
IEEE Transactions on Mobile Computing
How to correctly use the protocol interference model for multi-hop wireless networks
Proceedings of the tenth ACM international symposium on Mobile ad hoc networking and computing
Capacity of large-scale CSMA wireless networks
Proceedings of the 15th annual international conference on Mobile computing and networking
Back-of-the-envelope computation of throughput distributions in CSMA wireless networks
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Performance analysis of the IEEE 802.11 distributed coordination function
IEEE Journal on Selected Areas in Communications
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This paper tries to bring together the physical model and protocol model that have been used to characterize interference relationship in an 802.11 ad hoc network. The physical model (known as the SNR model) is generally considered as a reference model for the physical layer behaviour but its application in wireless ad hoc networks is restricted by its complication. On the other hand, the protocol model (known as the unified disk graph) is straightforward but its validity is doubtful. We propose an analytical model for 802.11 ad hoc wireless networks where both the physical and protocol models are improved and modelled accurately by taking into accounts all emitters in the network and circumventing simplistic assumptions where communications are supposed to systematically fail if non-intended emitters fall in proximity of a receiver node. Our model consists in replacing a finite number of nodes by an equivalent continuum - characterized by a density of nodes - and disseminated in the network according to some distribution function. The key feature of the proposed model is that it permits taking into account the effect of interference, the CSMA/CA mechanism and radio propagation aspects in an easy and clear-cut way. All assumptions in the model are assessed with simulation results. Closed form formula of the signal to noise ratio and the throughput capacity per node will be given, corroborated by extensive simulation results in ns-2.