Trajectory Sampling With Unreliable Reporting

Cooperative spectrum sensing over unreliable reporting channel

This article aims to analyze a cooperative spectrum sensing scheme using a centralized approach with unreliable reporting channel. The spectrum sensing is applied to a cognitive radio system, where each cognitive radio performs a simple energy detection and send the decision to a fusion center through a reporting channel. When the decisions are available at the fusion center, a n-out-of-K rule ...

Trajectory engine: a backend for trajectory sampling

The management of communication networks increasingly requires detailed knowledge of network usage, acquired by direct measurement. We report on the design and implementation of a backend system for Trajectory Sampling, a method for consistent sampling of packets across a network domain. This Trajectory Engine collects trajectory samples and stores them after appropriate preprocessing. It provi...

Trajectory Sampling: White Paper

TS implements consistent packet sampling. Conceptually, each packet traversing a measurement domain is sampled either on every link traversed, or on no link at all. Some highly compressed information on sampled packets are collected centrally in a collection system, which is then able to reconstruct the trajectory (path) of each sampled packet [5]. This set of sampled packet trajectories provid...

Trajectory Sampling: White Paper Draft

TS implements consistent packet sampling. Conceptually, each packet traversing a measurement domain is sampled either on every link traversed, or on no link at all. Some highly compressed information on sampled packets are collected centrally in a collection system, which is then able to reconstruct the trajectory (path) of each sampled packet [5]. This set of sampled packet trajectories provid...

Sampling-based Sub-Trajectory Clustering