A method for selection of a network slice performed by a user equipment operating in a cellular network comprising at least two network slices, a plurality of base stations, and at least one network mobility unit, the user equipment being configured to camp on one of the plurality of base stations, hereinafter the serving base station, and to maintain a list of preferred network services, the method comprising the steps of: - receiving from at least one of the plurality of base stations a signalling indicating a set of quality of service values supported by the at least one of the base stations, - determining from said received sets of supported quality of service values at least one supported network service for respective base stations, - prioritizing the plurality of base stations by means of said determined supported network services in consideration of at least one out of the list of preferred network services, - selecting one of the plurality of base stations considering said prioritization, and for setting up of one of the preferred network services, hereinafter the selected network service: - sending a network slice selection message indicating a quality of service value relating to the selected network service to the serving base station, - sending an attach request via the serving base station to the network mobility unit, for attaching to the selected network service on a corresponding network slice, wherein, the method comprises, in conjunction with receiving the set of quality of service values, the step of receiving power consumption ratings for at least one frequency indication on which said at least one supported network service is provided, and the step of prioritizing also comprises considering said power consumption ratings. - receiving from at least one of the plurality of base stations a signalling indicating a set of quality of service values supported by the at least one of the base stations, - determining from said received sets of supported quality of service values at least one supported network service for respective base stations, - prioritizing the plurality of base stations by means of said determined supported network services in consideration of at least one out of the list of preferred network services, - selecting one of the plurality of base stations considering said prioritization, and for setting up of one of the preferred network services, hereinafter the selected network service: - sending a network slice selection message indicating a quality of service value relating to the selected network service to the serving base station, - sending an attach request via the serving base station to the network mobility unit, for attaching to the selected network service on a corresponding network slice, wherein, the method comprises, in conjunction with receiving the set of quality of service values, the step of receiving power consumption ratings for at least one frequency indication on which said at least one supported network service is provided, and the step of prioritizing also comprises considering said power consumption ratings. - sending a network slice selection message indicating a quality of service value relating to the selected network service to the serving base station, - sending an attach request via the serving base station to the network mobility unit, for attaching to the selected network service on a corresponding network slice, wherein, the method comprises, in conjunction with receiving the set of quality of service values, the step of receiving power consumption ratings for at least one frequency indication on which said at least one supported network service is provided, and the step of prioritizing also comprises considering said power consumption ratings.