A rate-adaptive MAC protocol for multi-Hop wireless networks
Proceedings of the 7th annual international conference on Mobile computing and networking
Opportunistic media access for multirate ad hoc networks
Proceedings of the 8th annual international conference on Mobile computing and networking
Hybrid rate control for IEEE 802.11
Proceedings of the second international workshop on Mobility management & wireless access protocols
Idle sense: an optimal access method for high throughput and fairness in rate diverse wireless LANs
Proceedings of the 2005 conference on Applications, technologies, architectures, and protocols for computer communications
Time-based fairness improves performance in multi-rate WLANs
ATEC '04 Proceedings of the annual conference on USENIX Annual Technical Conference
Performance analysis under finite load and improvements for multirate 802.11
Computer Communications
Performance analysis of the IEEE 802.11 distributed coordination function
IEEE Journal on Selected Areas in Communications
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In a multirate wireless network such as IEEE 802.11 WLAN, the connection having a good channel condition uses a high transmission rate and the connection having a poor channel condition uses a low transmission rate. However, this coexistence of different transmission rates degrades the total system performance of the network. In order to eliminate this performance abnormality and improve protocol capacity, we propose a new packet transmission algorithm, the RAT (Rate-Adapted Transmission) scheme. The RAT scheme distributes the wireless channel fairly based on the channel occupancy time. Moreover, it efficiently transmits packets even in a single station using rate-based queue management. Therefore, the RAT scheme obtains not only the inter-rate contention gain among stations but also the intra-rate contention gain among connections in a single station. By simulation, we show that the proposed RAT scheme is superior to the default IEEE 802.11 MAC DCF access method and the modified OAR (Opportunistic Auto Rate) scheme.