Patent ID: 8855656

Claim:
A method comprising: determining the amount of radio data traffic within a specific area of a mobile telecommunication network, wherein the specific area is served by at least one first base station being assigned to a first radio access technology and by at least one second base station being assigned to a second radio access technology, and wherein compared to the second radio access technology the first radio access technology is a legacy radio access technology; comparing the determined amount of radio data traffic with a first radio data traffic capacity, which can be provided by the at least one first base station; if the first radio data traffic capacity is larger than the determined amount of radio data traffic, transferring the at least one second base station into a predefined operational state, in which the at least one second base station has a reduced electric power consumption, which is smaller than the electrical power consumption being assigned to a full operation of the at least one second base station, wherein transferring the at least one second base station into a predefined operational state is carried out in response to a configuration message, wherein the predefined operational state is a sleep mode, wherein the configuration message comprises information about the network such as frequency bad and network identification, and wherein before transferring the at least one second base station into the predefined operational state, the at least one second base station receives a first inter radio access technology information, which comprises information about the type and the radio frequency of the first radio access technology, and a second inter radio access technology information, which comprises a unique identification for each of the at least one second base station within a first part of the mobile telecommunication network, which part is exclusively assigned to the first radio access technology; and serving the specific area exclusively by the at least one first base station.