Exploiting device-to-device (D2D) transmission strategy for throughput enhancement in WLANs
Date
2022Item Type
ArticleAbstract
The IEEE 802.11 MAC protocols have been implemented in many wireless ad hoc and infrastructure networks. Most of the IEEE 802.11-based networks adopt a one-hop transmission mechanism (the source and destination communicate using a direct link). While this strategy is simple, it degrades network performance as it limits the number of data transmissions that can concurrently take place. The performance of IEEE 802.11 MAC in terms of delay and overall achieved throughput can be improved when the overall transmission time for each data transmission from the access point (AP) to any node in the network is minimized. Occupying the time-frequency resources for a shorter time period results in more available resources for other potential downlink transmissions to take place. In this work, we present a modified MAC protocol for IEEE 802.11 infrastructure-based networks with device-to-device transmission strategy. The main goal of our proposed protocol is to minimize the transmission time for individual downlink transmissions while maximizing the utilization of network resources by using D2D multi-hop transmissions, thereby improving the overall achieved throughput. In our proposed mechanism, the AP selects the multi-hop path that requires the minimum transmission time to deliver the data packets to destination. This path is selected even though the direct path exists. Compared to the IEEE 802.11 standard, simulation results show significant performance improvements in terms of throughput and fairness.
Author
Bany Salameh, Haythem
Al-Bzoor, Rasha
Darabkh, Khalid A.