An object of the present invention is to provide a communication system, a base station, a host node, and a communication method in order to address one or more of the above-described problems. A communication system according to the present invention is a communication system including: a base station (10) and a host node (40) that communicates with the base station (10). The base station (10) included in the communication system transmits to the host node (40) setting information indicating whether or not a paging message transmitted from the host node (40) can be transmitted to other base stations, and the host node (40) receives the setting information from the base station (10).