Tytuł:

Application of a hash function to discourage MAC-layer misbehaviour in wireless LANs, Journal of Telecommunications and Information Technology, 2004, nr 2

Autor:

Konorski, Jerzy ; Kurant, Maciej

Temat i słowa kluczowe:

wireless LAN ; MAC protocol ; noncooperative setting

Opis:

Contention-based MAC protocols for wireless ad hoc LANs rely on random deferment of packet transmissions to avoid collisions. By selfishly modifying the probabilities of deferments greedy stations can grab more bandwidth than regular stations that apply standard-prescribed probabilities. To discourage such misbehaviour we propose a protocol calledRT-hash whereby the winner of a contention is determined using a public hash function of the channel feedback. RT-hash is effective in a full hearability topology, assuming that improper timing of control frames is detectable and that greedy stations do not resort to malicious actions. Simulation experiments show that RT-hash protects regular stations' bandwidth share against various sophisticated greedy strategies of deferment selection; as such it may contribute to MAC-layer network security.

Wydawca:

Instytut Łączności - Państwowy Instytut Badawczy, Warszawa

Data wydania:

2004, nr 2

Typ zasobu:

artykuł

Format:

application/pdf

DOI:

10.26636/jtit.2004.2.242

ISSN:

1509-4553

eISSN:

1899-8852

Źródło:

Journal of Telecommunications and Information Technology

Język:

ang

Prawa:

Biblioteka Naukowa Instytutu Łączności