Impact of packet size on the temporal quality of video transmission over wired-to-wireless network
Proceedings of the 6th International Conference on Advances in Mobile Computing and Multimedia
A link adaptation scheme for the downlink of mobile hotspot
Wireless Communications & Mobile Computing
A Cross-Layer Approach to Reduce Channel Access Delay Jitter in IEEE 802.11 WLANs
Wireless Personal Communications: An International Journal
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By integrating wireless wide area networks (WWANs) and wireless local area networks (WLANs), mobile hotspot technologies enable seamless Internet multimedia services to users on-board a vehicle. In this paper, we investigate the performance of TCP-Friendly Rate Control (TFRC) protocol supporting multimedia services in mobile hotspots. To quantify the throughput of TFRC flows in mobile hotspots, we first develop discrete-time queuing models for the WWAN link and the WLAN link. We then derive the steady state TFRC throughput using an iterative algorithm. Analytical and extensive simulation results reveal how the end-to-end TFRC throughput is affected by the number of users in a mobile hotspot, the vehicle velocity, the WWAN/WLAN link bandwidth, the retransmission limit, and the buffer size. It is found that the WWAN channel profile and link bandwidth have significant impacts on the TFRC throughput, and therefore suitable resource allocation and admission control are indispensable for the quality and efficiency of multimedia services in mobile hotspots.