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Nowadays, the wireless devices are equipped with multiple network interfaces to support different wireless technologies, for example, Universal Mobile Telecommunications System (UMTS), Wireless Local Area Network (WLAN), and Bluetooth etc. However, while increasing the options to connect internet via different access networks, seamless mobility cannot be assured when the wireless device is roaming...
In this letter, we describe inappropriate SACK (Selective Acknowledgement) handling in SCTP multi-homed environment, and propose a simple modification. The main idea of the modification is that a sender does not increase the congestion control window size of a primary path when availability of the path is ambiguous. Through simulation, we show that the performance is much improved with this simple...
Multi-homed Mobile nodes (MNs) are very likely to traverse several different WLANs at anytime and at any location during communication. Thus, a single voice over Internet protocol (VoIP) application can experience several handovers between WLANs, which the quality of the communication may be degraded due to packet loss. The handover scheme proposed in this paper employs the delay over WLAN as an indicator...
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