There is provided a system and method for providing group calling in a wireless network. More specifically, in one embodiment, there is provided a method comprising receiving a request to participate a group call from a mobile device located in a wireless service area, determining whether a threshold number of other mobile devices in the wireless service area are participating in the group call, if the threshold number of the other mobile devices are participating in the group call, designating the requesting mobile device to receive a multicast transmission of the group call, and if the threshold number of other mobile devices are not participating in the group call, designating the requesting mobile device to receive a unicast transmission of the group call.