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Efficient estimation of retransmission timeout exhibits a fundamental impact on reliable transmissions of data in wireless mesh networks. Several approaches estimate retransmission timeouts for data transmissions over wired and wireless links mainly based on outcomes of already attempted data transmissions. These estimated retransmission timeouts possess significant variation over wireless links due...
Optimal scheduling for concurrent transmissions in rate-nonadaptive wireless networks is NP-hard. Optimal scheduling in rate-adaptive wireless networks is even more difficult, because, due to mutual interference, each flow's throughput in a time slot is unknown before the scheduling decision of that slot is finalized. The capacity bound derived for rate-nonadaptive networks is no longer applicable...
This paper studies the system throughput of the 802.15.3c WPAN by considering the different wireless multiple access methods of CSMA/CA and hybrid CSMA/CA and TDMA. We construct an analytical model to study the throughput and the conducted analysis clearly shows the system throughput of the 802.15.3c WPAN upon both CSMA/CA and hybrid CSMA/CA and TDMA. We have found that CSMA/CA-TDMA can achieve much...
In conventional IEEE 802.11 medium access control protocol, the distributed coordination function is designed for the wireless stations (WSs) to perform channel contention within the wireless local area networks (WLANs). Packet collision is considered one of the major issues within this type of contention-based scheme, which can severely degrade the network performance for the WLANs. Research work...
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