Razrešavanje komunikacionih konflikata u bežičnim senzorskim mrežama primenom RF tonova
Author
Jovanović, Milica D.Mentor
Đorđević, Goran Lj.Committee members
Petrović, BranislavPeulić, Aleksandar

Jovanović, Goran

Nikolić, Tatjana
Metadata
Show full item recordAbstract
This doctoral dissertation comprises a novel contention resolution
mechanism for wireless sensor networks, based on the exchange of
short radio-frequency (RF) tones among sensor nodes. Originality of
the proposed mechanism comes from the new algorithm for successive
elimination of nodes during the contention resolution phase. The
algorithm is based on binary countdown mechanism and guaranties
collision-free communication with minimum number of RF tones
transmitted. The proposed technique, called TONE, has better
performances in terms of energy efficiency and communication
throughput, compared to existing binary countdown based contention
resolution mechanisms. The application area of the TONE are Medium
Access Control (MAC) protocols for wireless sensor networks. In this
dissertation, the proposed TONE is applied in intracluster MAC
protocol for star topologies, where reduces the average energy
consumption during contention period for up to 44.5% compared to the
baseline... countdown mechanism. When aplied in receiver-driven
TDMA MAC protocol, the proposed TONE achieves the same
troughput as transmitter-driven TDMA MAC protocol with 3 times
smaller energy consumption, and even 4.5 smaller energy consumption
than receiver-driven TDMA MAC protocol with CSMA-based
contention resolution mechanism. The proposed TONE is also applied
in active period MAC protocols, where it increases normalized data
troughput for more than 100% compared to existing active-tone MAC
protocols, with reduction of energy consumption of up to 500%.