Communications system, network, portable device and method

摘要

A communications system (5) has a network (10) arranged for communication with portable communications devices (100, 200), according to a communications scheme. The communication system farther comprises a user profile register (130, 230) for storing a power profile of operating modes of a device (100, 200). The network (10) is arranged to modify the communication scheme in dependence upon the power profiles so as to dynamically control the power consumption of the devices (100, 200).