Throughput Analysis for Wireless Networks with Full-Duplex Radios

TL;DR

This paper analyzes the throughput of wireless networks with mixed full-duplex and half-duplex radios using stochastic geometry, showing that full-duplex scheduling maximizes throughput and providing bounds on the gain over half-duplex.

Contribution

It derives analytical throughput expressions for networks with FD and HD radios and proves that scheduling all nodes in FD mode maximizes throughput under ALOHA.

Findings

Maximal throughput is achieved by scheduling all nodes in FD mode.

Throughput gain of FD over HD is analytically bounded.

Full-duplex scheduling outperforms mixed or HD modes.

Abstract

This paper investigates the throughput for wireless network with full-duplex radios using stochastic geometry. Full-duplex (FD) radios can exchange data simultaneously with each other. On the other hand, the downside of FD transmission is that it will inevitably cause extra interference to the network compared to half-duplex (HD) transmission. In this paper, we focus on a wireless network of nodes with both HD and FD capabilities and derive and optimize the throughput in such a network. Our analytical result shows that if the network is adapting an ALOHA protocol, the maximal throughput is always achieved by scheduling all concurrently transmitting nodes to work in FD mode instead of a mixed FD/HD mode or HD mode regardless of the network configurations. Moreover, the throughput gain of using FD transmission over HD transmission is analytically lower and upper bounded.