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Our results include\ntwo aspects. In the defocusing case we show that the scattering\nholds for $d=1$, which extends the result in \\cite{Pau-Beam} to one\ndimension. In the focusing case, we show that the scattering holds\nin $\\R^d (d\\ge 1)$ when the energy $E(u_0,u_1)<E(R,0)$ and $\\|\\Delta\nu_0\\|_{L^2}^2+m\\|u_0\\|_{L^2}^2<\\|\\Delta R\\|_{L^2}^2+m\\|R\\|_{L^2}^2$\nfor ground state $R$. 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