PR-MAC: A practical approach for exploiting relay transmissions in multi-rate WLANs

A multichannel relay MAC protocol for IEEE 802.11 wireless LANs

“…Nevertheless, MRMAC has better throughput and delay performance than the other relay‐based MAC protocols . Now, we explain whether MRMAC can be integrated with the practical relay MAC protocol such as or not. Lim et al .…”

“…Lim et al . have proposed a practical relay MAC protocol using proxy nodes that act as a relay node. The approach does not need the modification of nodes, which is its main advantage when compared with the previous approaches , and thus is easy to deploy.…”

“…Figure illustrates the transmission procedure of the single‐frame relay mode, which is similar to the operation of existing frame‐relaying mechanisms . After control frames are exchanged between AP and D1, AP gets DATA1 from and transmits it to R1.…”

“…Recently, the concept of using relay nodes to improve the throughput of wireless networks has received much attention in the literature [15][16][17][18][20][21][22][23]. The key motivation of the studies is that communications through relay nodes located between a transmitter and receiver can provide higher link quality than direct link.…”

“…If AP did not receive any CTSs from intended receivers, it removes all elements in O s and O r and stops the data frame transmission procedures. Figure 6 illustrates the transmission procedure of the single-frame relay mode, which is similar to the operation of existing frame-relaying mechanisms [15][16][17][18]. After control frames are exchanged between AP and D1, AP gets DATA1 from O s and transmits it to R1.…”