Computation-Communication Trade-offs and Sensor Selection in Real-time Estimation for Processing Networks

11/13/2019
by   Luca Ballotta, et al.
0

This paper investigates the use of a networked system (e.g., swarm of robots, smart grid, sensor network) to monitor a time-varying phenomenon of interest in the presence of communication and computation latency. Recent advances on edge computing are enabling processing to be performed at each sensor, hence we investigate the fundamental latency-accuracy trade-off, arising when a sensor in the network has to decide whether to transmit raw data (incurring a computational delay) or transmit it (incurring communication delays) in order to compute an accurate estimate of the state of the phenomenon of interest. We propose two key contributions. First, we formalize the notion of processing network. Contrarily to sensor and communication networks, where the designer is concerned with the design of a suitable communication policy, in a processing network one can also control when and where the computation occurs in the network. The second contribution is to provide analytical results on the optimal communication latency (i.e., the optimal time spent on processing at each node) for the case with a single sensor and multiple homogeneous sensors. Finally, we extend the problem to heterogeneous networks and design greedy algorithms for sensor selection and delay optimization. Numerical results substantiate our claims that accounting for computation latencies (both at sensor and estimator side) and communication delays can largely impact the estimation accuracy.

READ FULL TEXT
POST COMMENT

Comments

There are no comments yet.

Authors

11/13/2019

Optimal Computation-Communication Trade-offs in Processing Networks

This paper investigates the use of a networked system (e.g., swarm of ro...
03/16/2020

From Sensor to Processing Networks: Optimal Estimation with Computation and Communication Latency

This paper investigates the use of a networked system (e.g., swarm of ro...
08/06/2021

Computation and Communication Co-Design for Real-Time Monitoring and Control in Multi-Agent Systems

We investigate the problem of co-designing computation and communication...
08/19/2020

Enabling Remote Whole-Body Control with 5G Edge Computing

Real-world applications require light-weight, energy-efficient, fully au...
11/04/2020

Impact of delayed response on Wearable Cognitive Assistance

Wearable Cognitive Assistants (WCA) are anticipated to become a widely-u...
03/07/2021

Adaptive Coding for Matrix Multiplication at Edge Networks

Edge computing is emerging as a new paradigm to allow processing data at...
08/22/2019

Distributed Cooperative Online Estimation With Random Observation Matrices, Communication Graphs and Time-Delays

We analyze convergence of distributed cooperative online estimation algo...
This week in AI

Get the week's most popular data science and artificial intelligence research sent straight to your inbox every Saturday.