文摘
We study the asymptotic throughput for a large-scale wireless ad hoc network consisting of n nodes under the generalized physical model. We directly compute the throughput of multicast sessions to unify the unicast and broadcast throughputs. We design two multicast schemes based on the so-called ordinary arterial road system and parallel arterial road system, respectively. Correspondingly, we derive the achievable multicast throughput by taking account of all possible cases of n s ?=?ω(1) and 1?≤?em class="a-plus-plus">n d ?≤?em class="a-plus-plus">n???, rather than only the cases of $n_s=\Uptheta(n)$ as in most related works, where n s and n d denote the number of sessions and the number of destinations of each session, respectively. Furthermore, we consider the network with a general node density $\lambda \in [1,n]$ , while the models in most related works are either random dense network (RDN) or random extended network (REN) where the density is λ?=?n and λ?=?1, respectively, which further enhances the generality of this work. Particularly, for the special case of our results by letting λ?=?1 and $n_s=\Uptheta(n)$ , we show that for some regimes of n d , the multicast throughputs achieved by our schemes are better than those derived by the well-known percolation-based schemes.