Wireless Communications: Principles and Practice
Wireless Communications: Principles and Practice
WCDMA and WLAN for 3G and beyond
IEEE Wireless Communications
Design and performance of an enhanced IEEE 802.11 MAC protocol for multihop coverage extension
IEEE Wireless Communications
Two-hop-relay architecture for next-generation WWAN/WLAN integration
IEEE Wireless Communications
Real-time traffic support in relayed wireless access networks using IEEE 802.11
IEEE Wireless Communications
Uplink user capacity in a CDMA macrocell with a hotspot microcell: exact and approximate analyses
IEEE Transactions on Wireless Communications
Hotspot wireless LANs to enhance the performance of 3G and beyond cellular networks
IEEE Communications Magazine
IEEE Journal on Selected Areas in Communications
Multi-user diversity for IEEE 802.11 infrastructure wireless LAN
EUC'06 Proceedings of the 2006 international conference on Embedded and Ubiquitous Computing
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In this paper, we develop a traffic load-based resource allocation scheme, called LOAD, to enhance the capacity of relayed wireless access networks for asymmetric traffic load such as transmission control protocol (TCP). In order to estimate the current traffic load status in relayed wireless access networks, we propose a load estimation method. A relay gateway estimates the current traffic load status by keeping track of the sizes of the frames it encounters, and computes accordingly the current traffic load of the uplink and the downlink. The results are then used to allocate the system resource between the uplink and the downlink. The proposed method can be implemented without the modification of the deployed IEEE 802.11 nodes. We analyze the throughput ratio between the uplink and the downlink, and validate the analysis result with a comprehensive simulation study. The simulation results indicate that the utilization of the proposed method is better than that of IEEE 802.11 Distributed Coordination Function (DCF).