In a saturated IEEE 802.11-based wireless network, stations tend to face back-off delay and retransmissions because of the basic characteristics of DCF based on CSMA/CA. Several relay-based cooperative mechanisms have been proposed to improve the performance of the IEEE 802.11 WLAN. However, they require complicate procedures for the optimal cooperation among stations. In this paper, we propose a compensation-based cooperative mechanism that can improve the throughput of the IEE 802.11 WLAN and give fair chances to stations. The main idea of our proposed mechanism is that when the transmission of a station fails, one of its neighbor nodes with better channel quality transmits the failed frame as well as its own data frame using the MSDU aggregation scheme. After that, when the failed station grabs the channel, it gives its right to transmit to the proxy node as compensation. Simulation results show that the proposed mechanism significantly improves throughput and throughput gain.
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- A Compensation-Based Cooperative Mechanism to Improve the Performance of IEEE 802.11 WLANs
- Springer Berlin Heidelberg