A New Full Duplex MAC Protocol to Solve the Asymmetric Transmission Time

Recently, the full duplex communication has been spotlighted as one of key technologies of the future wireless local area network (WLAN). The full duplex MAC protocols are actively researched because the feasibility of full duplexing is achieved because of the technology evolution. The full duplex MAC protocols can be categorized as two types. One is centralized type and the other is distributed type. In most of distributed types, primary and secondary transmission time are different. To solve the problem occurred by the asymmetric transmission time, the busy tone is used in traditional full duplex MAC protocol. However, the usage of busy tone causes performance degradation as the busy tone has no data but consumes resource. Therefore, we propose a new full duplex MAC protocol which doesn´t use busy tone. The simulation results show that throughput of the proposed full duplex MAC protocol is better than traditional full duplex MAC protocol or half duplex as maximum MAC protocol data unit (MPDU) size is bigger. Additionally, in terms of power consumption, the proposed full duplex MAC protocol shows better performance compare to others.