A method executed by an Access and Mobility Management Function, AMF , for granting a subscriber terminal access to a communication service comprising: Receiving a request from a subscriber terminal of a 5G mobile communication network for usage of a communication service in a specific location which the mobile communication network provides in the specific location, wherein the mobile communication network provides the communication service by means of a network slice in the core network and in the radio access network; Determining whether the subscriber terminal is allowed to use the communication service in the specific location based on a subscription of the subscriber terminal and/or based on the mobile communication network operator's policy, wherein determining whether the subscriber terminal is allowed to use the communication service comprises determining whether the subscriber terminal is allowed to access the network slice in the core network and in the radio access network; Granting the subscriber terminal access to the communication service depending on whether the subscriber terminal is allowed to use the communication service in the specific location based on the subscription of the subscriber terminal and/or based on the mobile communication network operator's policy including obtaining network slice area restriction information from a Network Function in the 5G mobile communication network and providing the subscriber terminal access to the communication service based on the network slice area restriction information, wherein the network slice area restriction information comprises a list of core network slices and, for each core network slice, an indication in which area the core network slice may be access by the subscriber terminal; and Providing the subscriber terminal with the network slice area restriction information. Receiving a request from a subscriber terminal of a 5G mobile communication network for usage of a communication service in a specific location which the mobile communication network provides in the specific location, wherein the mobile communication network provides the communication service by means of a network slice in the core network and in the radio access network; Determining whether the subscriber terminal is allowed to use the communication service in the specific location based on a subscription of the subscriber terminal and/or based on the mobile communication network operator's policy, wherein determining whether the subscriber terminal is allowed to use the communication service comprises determining whether the subscriber terminal is allowed to access the network slice in the core network and in the radio access network; Granting the subscriber terminal access to the communication service depending on whether the subscriber terminal is allowed to use the communication service in the specific location based on the subscription of the subscriber terminal and/or based on the mobile communication network operator's policy including obtaining network slice area restriction information from a Network Function in the 5G mobile communication network and providing the subscriber terminal access to the communication service based on the network slice area restriction information, wherein the network slice area restriction information comprises a list of core network slices and, for each core network slice, an indication in which area the core network slice may be access by the subscriber terminal; and Providing the subscriber terminal with the network slice area restriction information. <EOS>