  In this note we have considered a relativistic Nambu-Goto model for a
particle in $AdS$ metric. With appropriate gauge choice to fix the
reparameterization invariance, we recover the previously discussed \cite{pal}
  "Exotic Oscillator". The Snyder algebra and subsequently the
$\kappa$-Minkowski spacetime are also derived. Lastly we comment on the
impossibility of constructing a noncommutative spacetime in the context of open
string where only a curved target space is introduced.
