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As described in the scope of the IEEE 802.15 working group, impulse radio ultra wide band (IR-UWB) is suitable for many wireless personal area network (WPAN) applications. Due to the short radio coverage of the UWB technology limited by the FCC regulations, IR-UWB devices that participate in a WPAN may not be always reachable within the single hop. The multi-hop capability will be a substantial requirement...
QoS-sensitive applications transmitted over wireless links require precise knowledge of the wireless environment. However, the dynamic nature of wireless channel, together with its different configurations and types, makes so called link quality estimation (LQE) a difficult task. This paper looks into the design of an accurate and fast LQE method for a multi data rate environment. We investigate the...
Accurate and fast wireless link quality assessment (LQA) for wireless channels would bring huge benefits for mobile multi-hop and multi-rate wireless ad hoc and sensor networks in the form of improved end-to-end performance. In this paper, we propose a novel LQA method based on cross-layer information. The method is implemented in a real test-bed, which is based on IEEE 802.11b/g, and achieved a significant...
Next generation communication networks will comprise third-generation (3G) cellular and multi-hop ad hoc networks. The paper has evaluated the end-to-end performance of TCP over a multi-hop cellular network that comprises the enhanced universal mobile telecommunications system (UMTS), namely, HSDPA and the IEEE 802.11 ad hoc networks for bulk data transfers under different HSDPA radio channel quality...
This paper describes an ultra wideband (UWB) based ad hoc networking scheme which enables a control center to track all emergency personnel deployed in buildings in an incident area, and also enables communication of other types of data directed from emergency personnel, including status information and alarm in particular. In this network, GPS-enabled vehicles form a coordination reference framework...
Beyond third-generation mobile communications networks will comprise a multitude of integrated legacy and new wireless networks. Mobile ad hoc networks are such new networks. In this paper, we consider the integration of the universal mobile telecommunications system (UMTS) that is a third-generation legacy mobile network and mobile ad hoc networks that are built using the IEEE 802.11 technology....
Next-generation communications networks will comprise third-generation (3G) cellular and multi-hop ad hoc networks, in particular, the Universal Mobile Telecommunications System (UMTS) and the IEEE 802.11 ad hoc networks. The paper has evaluated the performance of transmission control protocol (TCP) over an integrated UMTS and IEEE 802.11 multi-hop ad hoc network for bulk data transfers. The IEEE...
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