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On the Optimal Rate of Ad Hoc ALOHA Networks

Zucchetto, Daniel and Munari, Andrea and Zanella, Andrea (2019) On the Optimal Rate of Ad Hoc ALOHA Networks. The 1st IEEE WCNC International Workshop on Mathematical Tools and technologies for IoT and mMTC Networks Modeling, Marrakech, Morocco.

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The interest in asynchronous ALOHA protocols has recently been revived by the diffusion of low-power, long-range communication technologies proposed for Machine-to-Machine scenarios. This work focuses on ad hoc sensor networks where nodes communicate in pairs generating mutual interference, and tackles the fundamental yet still open question of how to set the transmission rate so as to maximise throughput. Elaborating on a previous stochastic geometry model, we consider a SINR decoding threshold that depends on the transmission rate, and analyse the interplay between interference and noise power to find the optimal transmission rate. Results reveal important design insights, showing that: i) the optimal rate relates to other system parameters in a rather complex manner but can be expressed by a single equation and is solvable via numeric evaluation; ii) in the interference-limited region, the optimal rate depends only on the bandwidth and the path-loss exponent; iii) this optimal rate yields close-to-optimal throughput also in the noise-limited region for standard values of the path loss coefficient; iv) using the optimal rate can significantly improve network throughput compared to the use of near-optimal rates.

Item URL in elib:https://elib.dlr.de/126757/
Document Type:Conference or Workshop Item (Speech)
Title:On the Optimal Rate of Ad Hoc ALOHA Networks
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Zucchetto, DanielUniversity of PadovaUNSPECIFIED
Munari, AndreaAndrea.Munari (at) dlr.deUNSPECIFIED
Zanella, AndreaUniversity of PadovaUNSPECIFIED
Refereed publication:Yes
Open Access:No
In ISI Web of Science:No
Keywords:random access; ALOHA; stochastic geometry
Event Title:The 1st IEEE WCNC International Workshop on Mathematical Tools and technologies for IoT and mMTC Networks Modeling
Event Location:Marrakech, Morocco
Event Type:international Conference
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Communication and Navigation
DLR - Research area:Raumfahrt
DLR - Program:R KN - Kommunikation und Navigation
DLR - Research theme (Project):R - Vorhaben Multimedia Satellitennetze
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation > Satellite Networks
Deposited By: Munari, Andrea
Deposited On:15 Mar 2019 14:21
Last Modified:15 Mar 2019 14:21

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