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In 3G-WLAN overlay network environments, a UE is apt to lose the WLAN signal without any notice by moving while it connects to WLAN because it can be apart from the WLAN coverage suddenly. In this case the on-going services are disrupted by unexpected link corruption. Hence, it needs to execute quickly the handover to 3G network as soon as it detects the lost of WLAN signal. However, as the 3G access...
Handover of a call from wireless LAN (WLAN) to third generation cellular system and vice versa is one of the challenges faced by the integrated 3G-WLAN networks. Evolution of 3G networks into all IP networks has made mobile IPv6 an ideal choice to support this kind of handover. However if soft handover is not employed, the latency posed by mobile IPv6 makes it undesirable for providing seamless mobility...
IEEE 802.11 DCF mode is a distributed channel access method for standard Wireless Local Area Networks (WLAN) with a goal of providing long-term fair channel access for the nodes. Due to the characteristics of radio signals, such as propagation attenuation and capture effect, WLAN users may experience unfair medium allocations depending on their locations. Our analysis shows that a user near the access...
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