Reinhardt Karnapke

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Typical sensor nodes are composed of cheap hardware because they have to be affordable in great numbers. This means that memory and communication bandwidth are small, CPUs are slow and energy is limited. It also means that all unnecessary software components must be omitted. Thus it is necessary to use application specific communication protocols. As it is(More)
Experiments with wireless sensor networks have shown that unidirectional communication links are quite common. What is even more, they have also shown that the range of a unidirectional link can exceed that of a bidirectional one by far. Still, most of todays routing protocols do not use them, they only eliminate their implications. Those protocols that do(More)
Cocos (COordinated COmmunicating Sensors)<sup>1</sup> is a lean middleware platform for wireless sensor and actuator networks. The major programming abstractions of Cocos are distributed sensor spaces, which enable the collective controlling of sensors or actuators on remote nodes. Thus, Cocosbrings high-level data-parallel programming conceptssuch as(More)