A method comprising: determining, by a user device or a cluster set manager, a plurality of access points (13, 14, 15) to be used in an access point cluster set for the user device; and for at least one access point (13, 14, 15) of the plurality of access points (13, 14, 15), assigning, by the user device or the cluster set manager, an access point availability state from a plurality of possible access point availability states, where the plurality of possible access point availability states comprises a suspended state; wherein the assigning further comprises assigning the suspended state to the at least one access point (13, 14, 15) of the plurality of access points (13, 14, 15); wherein the suspended state comprises at least one of: (i) radio frame resources in the at least one access point (13, 14, 15) of the plurality of access points (13, 14, 15) allocated to the user device cannot be released by the at least one access point (13, 14, 15) of the plurality of access points (13, 14, 15); (ii) the at least one access point (13, 14, 15) of the plurality of access points (13, 14, 15) cannot be used for rapid rerouting by the user device; and/or (iii) the at least one access point (13, 14, 15) of the plurality of access points (13, 14, 15) cannot be used for uplink access by the user device; removing, by the user device or the cluster set manager, the at least one access point (13, 14, 15) of the plurality of access points (13, 14, 15) in the suspended state from the access point cluster set when an availability status of the at least one access point (13, 14, 15) of the plurality of access points (13, 14, 15) relative to the user device determined by the user device or the cluster set manager is unavailable for a predetermined amount of time. determining, by a user device or a cluster set manager, a plurality of access points (13, 14, 15) to be used in an access point cluster set for the user device; and for at least one access point (13, 14, 15) of the plurality of access points (13, 14, 15), assigning, by the user device or the cluster set manager, an access point availability state from a plurality of possible access point availability states, where the plurality of possible access point availability states comprises a suspended state; wherein the assigning further comprises assigning the suspended state to the at least one access point (13, 14, 15) of the plurality of access points (13, 14, 15); wherein the suspended state comprises at least one of: (i) radio frame resources in the at least one access point (13, 14, 15) of the plurality of access points (13, 14, 15) allocated to the user device cannot be released by the at least one access point (13, 14, 15) of the plurality of access points (13, 14, 15); (ii) the at least one access point (13, 14, 15) of the plurality of access points (13, 14, 15) cannot be used for rapid rerouting by the user device; and/or (iii) the at least one access point (13, 14, 15) of the plurality of access points (13, 14, 15) cannot be used for uplink access by the user device; (i) radio frame resources in the at least one access point (13, 14, 15) of the plurality of access points (13, 14, 15) allocated to the user device cannot be released by the at least one access point (13, 14, 15) of the plurality of access points (13, 14, 15); (ii) the at least one access point (13, 14, 15) of the plurality of access points (13, 14, 15) cannot be used for rapid rerouting by the user device; and/or (iii) the at least one access point (13, 14, 15) of the plurality of access points (13, 14, 15) cannot be used for uplink access by the user device; removing, by the user device or the cluster set manager, the at least one access point (13, 14, 15) of the plurality of access points (13, 14, 15) in the suspended state from the access point cluster set when an availability status of the at least one access point (13, 14, 15) of the plurality of access points (13, 14, 15) relative to the user device determined by the user device or the cluster set manager is unavailable for a predetermined amount of time.