A NON-COOPERATIVE GAME APPROACH FOR POWER CONTROL MAC IN WIRELESS SENSOR NETWORKS

Pristup ne-kooperativne teorije igre za MAC kontrolu snage u bežicnim senzorskim mrežama Izvorni znanstveni clanak U bežicnim senzorsim mrežama, uspjesna komunikacija je glavni cilj protokola za kontrolu pristupa bežicnom mediju za prijenos podataka (MAC). Istovremeni prijenos je jedan od glavnih nacina rjesavanja pitanja tradicionalnih MAC protokola s malom propusnoscu i akumuliranim zastojem u bežicnim senzorskim mrežama s visokim opterecenjem i intenzivnim cvorovima. U ovom se radu predlaže novi MAC protokol s istovremenim prijenosom koji koristi zahvat kanala omogucujuci uspjesni istovremeni prijenos da bi se osigurala ucinkovita komunikacija. Koristimo algoritam kontrole snage temeljen na ne-kooperativnoj teoriji igre s nepoptpunim informacijama u svrhu postizanja istovremenog prijenosa visestruke veze na istom kanalu. Uz to, uvodi se Bayesian-Nashov poucak ekvilibrija za dobivanje dokaza o njegovom postojanju i jedinstvenosti. Rezultati simulacije pokazuju da protokol koji predlažemo može dobro funkcionirati u okruženju interferencije za istovremeni prijenos podataka. Znacajno je da je poboljsan protok mreže i da su smanjeni zastoji u sirenju podataka te je tako doslo i do ustede energije. Također, buduci da efikasno koristimo resurse kanala, ucinkovitost ponovne uporabe prostora znacajno je poboljsana. Kljucne rijeci: bežicne senzorske mreže; istovremeni prijenos; MAC protokol; teorija igre; ucinak zahvata (apsorpcije)

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