Highly scalable aggregate computations in cyber-physical systems: physical envi...

• Author(s): Tovar, Eduardo ; Andersson, Björn ; Pereira, Nuno ; Alves, Mário ; Prabh, K. Shashi ; Pacheco, Filipe
• Date: 2008
• Persistent ID: http://hdl.handle.net/10400.22/3937
• Origin: Repositório Científico do Instituto Politécnico do Porto
• Document Type: Conference Object
• Language: English

Description

In 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, one can compute aggregate quantities such as the maximum or minimum of sensor readings in a time-complexity that is equivalent to essentially one message exchange. We also illustrate the use of this mechanism in a more complex task of computing the interpolation of smooth as well as non-smooth sensor data in very low timecomplexity.