  The initial single pion emission (ISPE) mechanism is applied to the processes
$\Upsilon(5S)\to \pi B^{(*)}\bar{B}^{(*)}$ whose details have been recently
reported at ICHEP2012 and we obtain reasonable agreement with Bell's
measurements, i.e., we succeed in reproducing the enhancement structures of
$Z_b(10610)$ and $Z_b(10650)$. Inspired by this success, we predict the
corresponding enhancement structures in higher charmonia open charm pion decay
near the thresholds of $D^\ast \bar{D}$ and $D^\ast \bar{D}^\ast$.
