1. A method for policy and charging control in a wireless communication system, the method comprising: transmitting, to at least one mobile entity, configuration data comprising device-to-device data; receiving, from the at least one mobile entity, an accounting report associated with device-to-device communication; transmitting, to a charging function entity, a charging report based on the accounting report received from the at least one mobile entity; and performing, at a policy control function entity, a policy control and enforcement based at least on the accounting report received from the at least one mobile entity.