A Method of Mobile Core Network Load Reduction Using Autonomous Clustering-Based Two-Layered Structure for Information Dissemination in Wireless Networks

Most of mobile nodes and wireless devices are equipped with 4G/LTE cellular connections and WiFi short range connections. Along with the growth of the Internet of Things (IoT) and M2M communication, in case that these nodes/devices use cellular connections simultaneously to access to the mobile core network, there is the possibility that many of them cannot establish the cellular connections due to the limited wireless resources of the cellular base stations. In this paper, at first, we introduce an autonomous clustering-based two-layered structure in wireless networks. Each node communicates with the other nodes within the transmission range by using WiFi short range connections as ad hoc connections and configures a Mobile Ad hoc NETwork (MANET) without depending the mobile core network as the MANET layer. In the MANET layer, all nodes are divided into multiple groups (clusters) and one cluster head node is selected in each cluster by autonomous clustering. Only cluster head nodes can establish the cellular connections as super peers, and also these super peer nodes configure the P2P network as the P2P layer. Next, we propose a mobile core network load reduction method based on the two-layered structure for information dissemination, and then evaluate the proposed method and the effect of the two-layered structure from the viewpoint of information dissemination. In the proposed method each node can use a cellular connection and an ad hoc connection according to the network condition and node density. Finally, we can confirm that the proposed method reduces the mobile core network load as well as provides the reliable information dissemination from a node to the other nodes through simulation experiments.