Femtocell coverage can be extended across a coverage area by providing a cluster of femtocell access points (FAPs). Each FAP is independently registered with a core network and provisioned with a location area code common to each FAP. At hand-in from the macrocell network, an association is made between the mobile station and the hand-in FAP, which becomes an anchor FAP for the duration of the mobile station's presence within the cluster. Calls between the mobile station and the core network are routed via a servicing FAP of the cluster and the anchor FAP.