Um Mecanismo de Contenção Baseado em Pulso/Tone Para o Gerenciamento de Múltiplos Canais
(A Contention Mechanism Based on Pulse/Tone Signal For a Multi-Channel Environment)
Marcos Fagundes Caetano (email@example.com), Felipe Moraes Modesto (firstname.lastname@example.org), Jacir Luiz Bordim (email@example.com)
Universidade de Brasília
This paper appears in: Revista IEEE América Latina
Publication Date: June 2014
Volume: 12, Issue: 4
The rising number of wireless devices has impacted
directly on the interference and saturation levels of the ISM bands.
Among the approaches proposed to minimize this problem is the
use of use multiple orthogonal channels. In this context, a major
challenge is to coordinate and grant channel access to the
transmitting devices. A common strategy is to use a dedicated
channel, also known as control channel, to select the nodes that
shall communicate over the available data channels. In this work,
we present a new contention mechanism, termed CRP (Collision
Resolution Period), which was designed to assist in the contention
resolution task. Compared with the IEEE 802.11 standard, the
CRP has able to increase the aggregate throughput by over 300%.
Also, a queuing theory model was used to evaluate the limits of the
control channel utilization.
Multi-channel, MAC Protocol, IEEE 802.11
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