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Wireless/wired hybrid network offers a promising solution to future broadband access. Exploiting the potential of a hybrid network requires an integrated effort on network design and optimization. We discuss the inter-network traffic and intra-network traffic that commonly exist in an access network, and study to improve transmission efficiency for the two types of traffic. We propose a three-step...
In this paper, we elaborate a set of scenarios and experiments for evaluating the impact of the physical environment on a Wireless Sensor Network (WSN). More specifically, a WSN application is implemented for collecting received signal strength indicator (RSSI) measurements in two different environments. The main contributions are twofold: boxplot diagrams are used for graphical comparison of RSSI...
We propose and analyze a hierarchical agent-based secure multicast (HASM) algorithm for efficiently supporting secure mobile multicast in wireless mesh networks, with design considerations given to minimize the overall network cost incurred by multicast packet delivery, mobility management, security key management, and group membership maintenance. HASM dynamically maintains a group of multicast agents...
Today's access networks are increasingly shaped by the services that they provide to the end users. In a hybrid wireless-optical broadband access network (WOBAN), to access any service, the corresponding requests for the services and responses require multi-hop communication over the wireless mesh network (WMN) and Passive Optical Network (PON) subsequently over the Internet to some server in the...
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