Nowadays, a group of low-power wide-area networks (LPWANs) is one of the options providing the communication infrastructure for the Internet of Things applications. Most of LPWANs use a star topology model between end-nodes and a base station or a gateway. However, the mesh topology has shown the mobility and the dynamic in the network deployment. This article considers a question for constructing mesh LPWAN networks. In this article, the authors investigated existing standards of the developing gateways in the LPWAN networks, creating a structure of the mesh LPWAN with a conversion structure – heterogeneous gateway. We used this structure to create a simulation model of this network. The simulation model was mapped with a model based on the more traditional star topology with a simple gateway and an edge server. The results of the simulation can be used to design new mesh LPWAN networks.