Uma Arquitetura em Dois Niveis para o Suporte de Comunicação de Tempo-Real em Redes CSMA

In this paper, a new approach to support real-time (RT) communication in IEEE 802.11 networks is proposed. It is based on a 2-tier architecture. In the lower layer (MAC layer), a forcing collision resolution mechanism enforces a higher priority level to the RT stations. In the upper layer, a coordination mechanism ensures a collision-free access among the set of RT stations. The proposed architecture prioritizes the RT traffic over non-RT traffic, without the need to strictly control the timing behavior of every communication device.