Distance-aware data rate adaptive cooperative MAC protocol for wireless networks

Cooperation-Based Adaptive and Reliable MAC Design for Multichannel Directional Wireless IoT Networks

“…The proposed work assumed the idealized directional antenna pattern termed as "flat-top"antenna model where the gain of minor-lobes are assumed to be very low [27], [35] and the minor-lobe effect is negligible, i.e., the antenna gain is fixed within the beamwidth θ of a particular mainlobe beam and the gain outside the beamwidth considered as zero .Therefore, the identical antenna gains of the mainlobe and minor-lobe are given by G main = 2π/θ and G minor = 0 respectively, where θ is the beamwidth of a beam. Moreover, [36]. In the same way, a recent research SCT [35] ensures that distance-based multiple data rates are supported by the directional antenna system as shown in Fig.…”

“…R S−ri and R ri−D are achievable data-rate from S − 2 − r i and r i − 2 − D, respectively. One of the former research named D 2 RAC MAC [36] demonstrates data-rates can be estimated based on distance. Eventually, estimated distances among the nodes are stored in node distance matrix during neighbor discovery period.…”

Performance Analysis of a Novel Distributed C-ARQ Scheme for IEEE 802.11 Wireless Networks

“…Liu K, Chang X and Liu F et al [13] focused on a Cooperative MAC protocol with Rapid Relay Selection (RRS-CMAC) to improve the cooperation efficiency and multiple access performance in wireless ad hoc networks. Mahmud M T, Rahman M T and Rahman M O, et al [14] designed a Dis tance-Aware Data Rate Adaptive Cooperative (D 2 RAC) MAC protocol for wireless cooperative networks to ensure a higher reliability, data rate and lower delay by using two distance thresholds to select the optimal relay and exploiting the residual energy of nodes to balance the energy consumption between nodes.…”

“…Zhang X, Guo L and Anpalagan A et al [15] pres ented an En ergy-Efficie nt Cooperative MAC (EECO-MAC) protocol using power control in mobile ad hoc networks and a best partnership selection algorithm was proposed. On the other hand, since the most significant advantage of CC is that two-hop transmissions at a faster data rate (by using relays) can be used to replace the slower single-hop (direct transmission from S to D), most existing works belong to the Min-TX category which is devoted to minimize packet transmission delay by selecting the optimal relays, such as CoopMAC [7] , D 2 RAC-MAC [14] and EECO-MAC [15] protocol and so on. The cooperative MAC protocols in this category usually require the support of other technologies such as power control [15] , concurrent cooperative transmission [10] and the introduction of CoopTable [7] .…”