Transmission Opportunity Control for Wireless Networks with Multi-Packet Reception Capability
Daewon Jung, Jaeseon Hwang, Hyuk Lim · ICEIC : International Conference on Electronics, Informations and Communications · 2010
Recent advances in signal processing and multiuser detection (MUD) technologies, such as UWB and MIMO, provide more chances for resolving collisions in wireless networks. These advanced technologies make it possible for wireless nodes to receive multiple packets from other nodes simultaneously, achieving significant improvement in network throughput performance. In this paper, we investigate the throughput performance of wireless networks with multi-packet reception (MPR) capability, and show that MPR capability can be fully utilized by allowing wireless nodes to transmit more aggressively. We propose a transmission opportunity control scheme that determines the optimal contention window for back-off mechanisms to exploit MPR capability. Through extensive simulations, we show that the proposed transmission opportunity control scheme achieves high throughput performance, which approximates the analytic bound derived for wireless networks with MPR capability.