Multi-hop ad-hoc networks with chain and cross topologies proved to be an excellent solution for low-cost of computer networks. It provides quick and easy networking in all environments. In this paper, a model of multi-hop ad-hoc network is suggested, in addition, a new model for multi-hop wireless ad-hoc network with chain and cross-topologies are designed using Simevents tools, it takes into account the effect of the contention process and losses on the MAC layer. Finally a cross-layering algorithm called TCP Contention Control (TCC) algorithm is applied to the proposed model using Simevents tools to improve the throughput performance. The results show that the improved throughput percentage of chain and cross-topologies are equal to 33.5% and 49% respectively.