An infrastructure equipment for forming part of a mobile communications network, the infrastructure equipment comprising: a transmitter unit configured to transmit data to communications devices via a wireless access interface, a receiver unit configured to receive data transmitted from communications devices via the wireless access interface, and a controller configured to control the transmitter unit and the receiver unit to form the wireless access interface, the controller being configured in combination with the transmitter and the receiver to receive one or more signalling messages from a communications device and in response to establish a communications context for communicating data packets via a packet communications bearer via the mobile communications network, to receive a stasis state message from the communications device for which the context has been established, the stasis state message indicating that the communications device wishes to enter a stasis state, in which information relating to the communications context associated with the packet communications bearer is stored, radio resources associated with the communications context can be released and the communications device can enter a power down state, because no data packets are available for transmission for a predetermined time via the packet communications bearer, to transmit a stasis state confirm message to the communications device including an information element indicating a period of time for which the communications context is maintained by the communications network prior to being discarded and for which the communications device remains in the stasis state before moving to an idle state, and to store the information relating to the communications context established for the communications devices and associated with the packet communications bearer in a data store, and to store a network terminal identifier provided to the communications device by the mobile communications network for requesting communications resources when the communications context was established, the network terminal identifier being reserved for the communications device and not allocated to any other communications devices while the communications device remains in the stasis state, which stored information can be used by the controller to re-establish the same packet communications bearer to transmit data packets via the same packet communications bearer, the communications device thereby entering the stasis state. a transmitter unit configured to transmit data to communications devices via a wireless access interface, a receiver unit configured to receive data transmitted from communications devices via the wireless access interface, and a controller configured to control the transmitter unit and the receiver unit to form the wireless access interface, the controller being configured in combination with the transmitter and the receiver to receive one or more signalling messages from a communications device and in response to establish a communications context for communicating data packets via a packet communications bearer via the mobile communications network, to receive a stasis state message from the communications device for which the context has been established, the stasis state message indicating that the communications device wishes to enter a stasis state, in which information relating to the communications context associated with the packet communications bearer is stored, radio resources associated with the communications context can be released and the communications device can enter a power down state, because no data packets are available for transmission for a predetermined time via the packet communications bearer, to transmit a stasis state confirm message to the communications device including an information element indicating a period of time for which the communications context is maintained by the communications network prior to being discarded and for which the communications device remains in the stasis state before moving to an idle state, and to store the information relating to the communications context established for the communications devices and associated with the packet communications bearer in a data store, and to store a network terminal identifier provided to the communications device by the mobile communications network for requesting communications resources when the communications context was established, the network terminal identifier being reserved for the communications device and not allocated to any other communications devices while the communications device remains in the stasis state, which stored information can be used by the controller to re-establish the same packet communications bearer to transmit data packets via the same packet communications bearer, the communications device thereby entering the stasis state.