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BANMAC: an opportunistic MAC protocol for reliable communications in body area ...
Prabh, K. Shashi; Royo, Fernando; Tennina, Stefano; Olivares, TeresaWe consider reliable communications in Body Area Networks (BAN), where a set of nodes placed on human body are connected using wireless links. In order to keep the Specific Absorption Rate (SAR) as low as possible for health safety reasons, these networks operate in low transmit power regime, which however, is known to be error prone. It has been observed that the fluctuations of the Received Signal Strength (R...
Quantifying the channel quality for interference-aware wireless sensor networks
Noda, Claro; Prabh, K. Shashi; Alves, Mário; Voigt, Thiemo; Boano, Carlo AlbertoReliability of communications is key to expand application domains for sensor networks. SinceWireless Sensor Networks (WSN) operate in the license-free Industrial Scientific and Medical (ISM) bands and hence share the spectrum with other wireless technologies, addressing interference is an important challenge. In order to minimize its effect, nodes can dynamically adapt radio resources provided information abou...
Bandwidth allocation in hexagonal wireless sensor networks for real-time commun...
Prabh, K. ShashiWe present an algorithm for bandwidth allocation for delay-sensitive traffic in multi-hop wireless sensor networks. Our solution considers both periodic as well as aperiodic real-time traffic in an unified manner. We also present a distributed MAC protocol that conforms to the bandwidth allocation and thus satisfies the latency requirements of realtime traffic. Additionally, the protocol provides best-effort se...
Highly scalable aggregate computations in cyber-physical systems: physical envi...
Tovar, Eduardo; Andersson, Björn; Pereira, Nuno; Alves, Mário; Prabh, K. Shashi; Pacheco, FilipeIn this paper, we focus on large-scale and dense Cyber- Physical Systems, and discuss methods that tightly integrate communication and computing with the underlying physical environment. We present Physical Dynamic Priority Dominance ((PD)2) protocol that exemplifies a key mechanism to devise low time-complexity communication protocols for large-scale networked sensor systems. We show that using this mechanism,...
Localizing objects in large-scale cyber- physical systems
Andersson, Björn; Prabh, K. ShashiWe use the term Cyber-Physical Systems to refer to large-scale distributed sensor systems. Locating the geographic coordinates of objects of interest is an important problemin such systems. We present a new distributed approach to localize objects and events of interest in time complexity independent of number of nodes.
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