CSNOMA: Carrier Sense Non-Orthogonal Multiple Access

Abstract

In this paper, we investigate the possibility of the cross-layer design of a distributed random access scheme with considering physical (PHY) and multiple access control (MAC) layers, which utilizes the interference cancellation technique. In this regard, we propose a new multiple access protocol, named carrier sense non-orthogonal multiple access (CSNOMA). We consider the spatially randomly distributed interferers to realistically capture the effect of interference. The proposed protocol shows better area spectral efficiency than carrier sense multiple access (CSMA)/CA, as the node density increases. We also present a practical signaling design compatible with IEEE 802.11 DCF mode.

Majority Voting-Based MAC Protocol for Exploiting Link-Layer Diversity in Wireless Networks

“…In [ 1 ], Bellalta derived a numerical model to approximate the throughput of high-density wireless networks by considering interactions between wireless networks and demonstrated the negative effect of frame collision using a continuous-time Markov chain in the HD-WLANs. In order to mitigate the network performance degradation caused by high interference levels and poor channel use in high-density wireless networks, many studies have been conducted from the viewpoint of the physical layer [ 6 , 7 ] and the link layer [ 8 , 9 , 10 , 11 , 12 ]. A dynamic channel bonding based on a carrier range was proposed in [ 6 ], and a PCS threshold selection scheme based on CSMA/CA was proposed to increase the efficiency of resource utilization in high-density wireless networks in [ 7 ].…”

“…In [ 9 ], the channel collision probability was reduced by optimizing channel reliability using the accumulated wireless channel information obtained by reinforcement learning. In addition, a MAC protocol utilizing priority-based power regulation [ 10 ], channel information-based back-off mechanism [ 11 ], and interference cancellation techniques [ 12 ] has been developed to mitigate interference in high-density wireless networks.…”