One aspect of the present application provides a Category M apparatus that communicates over a communication network. The apparatus comprises a processor and an interface. The processor is configured to generate a message requesting registration of the apparatus with a core network, the message generated to include at least one header indicating a power saving mode capability of the apparatus. The processor is further configured to schedule sleep periods and wakeup times for the apparatus. The interface is configured to transmit the message to the core network. The interface is further configured to receive a response, from the core network, including one or more parameters and one or more timers established by the core network based at least in part on the power saving mode capability of the apparatus.