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On the MAC Protocols of Co-Existing Time-Slotted Sensor Networks

Arash Tahmasebi Toyserkani (Institutionen för signaler och system, Kommunikationssystem) ; Mats Rydström (Institutionen för signaler och system, Kommunikationssystem) ; Erik G. Ström (Institutionen för signaler och system, Kommunikationssystem) ; Arne Svensson (Institutionen för signaler och system, Kommunikationssystem)
Göteborg : Chalmers University of Technology, 2007.
[Rapport]

We consider a joint scheduling approach for clustered sensor networks, where clusters use a time-slotted mechanism to access a shared medium. It is shown that a significant increase in packet delivery probability can be achieved if the transmission schedules at neighboring clusters are considered jointly. In our consideration of the problem, we include realistic propagation effects, such as Rayleigh fading, something that is often neglected in the literature. For networks with more than two clusters, the scheduling problem is NP-hard, and we therefore approach the problem using Lagrangian relaxation methods. A numerical evaluation of the proposed algorithm show that gains in packet delivery probability up to thirty percent can be achieved over a random scheduling.

Nyckelord: MAC, TDMA, Lagrangian relaxation, Sensor Networks



Denna post skapades 2007-05-24. Senast ändrad 2014-09-29.
CPL Pubid: 42047

 

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Institutioner (Chalmers)

Institutionen för signaler och system, Kommunikationssystem

Ämnesområden

Telekommunikationsteori

Chalmers infrastruktur

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Denna publikation ingår i:


On Medium Access for Wireless Ad-hoc and Sensor Networks


Ingår i serie

R - Department of Signals and Systems, Chalmers University of Technology R010/2007