  Monogamy relations characterize the distributions of entanglement in
multipartite systems. We investigate the monogamy relations satisfied by the
concurrence of assistance and the negativity of assistance for multiqubit
generalized $W$-class states. Analytical monogamy inequalities are presented
for both concurrence of assistance and negativity of assistance, which are
shown to be tighter than the existing ones. Detailed examples have been
presented.
