A method of operation performed by a control node in a wireless communication network, the method comprising: determining that a service handover is to be initiated for a first communication module operating in the wireless communication network comprising obtaining a handover decision indication from a first access point to which the first communication module is attached; and applying a scheduling or locking mechanism, to prevent the service handover for the first communication module from coinciding with service handovers involving a second communication module that is affiliated with the first communication module, and attached to the network, characterized in that applying the scheduling or locking mechanism comprises - obtaining affiliation information indicating affiliations between the first and second communication modules (14-1, 14-2) from a database, a further control node or a coordination node, wherein the affiliated first and second communication modules (14-1, 14-2) allow for redundantly accessing the wireless communication network, or - communicating with another control node or a coordination node to obtain a lockout status of the first communication module, wherein the lockout status indicates whether the service handover of the first communication module may be initiated or must be deferred, to avoid coinciding with a service handover for the second communication module; and scheduling or locking the service handover for the first communication module based on said affiliation information or said lockout status, respectively. determining that a service handover is to be initiated for a first communication module operating in the wireless communication network comprising obtaining a handover decision indication from a first access point to which the first communication module is attached; and applying a scheduling or locking mechanism, to prevent the service handover for the first communication module from coinciding with service handovers involving a second communication module that is affiliated with the first communication module, and attached to the network, characterized in that applying the scheduling or locking mechanism comprises - obtaining affiliation information indicating affiliations between the first and second communication modules (14-1, 14-2) from a database, a further control node or a coordination node, wherein the affiliated first and second communication modules (14-1, 14-2) allow for redundantly accessing the wireless communication network, or - communicating with another control node or a coordination node to obtain a lockout status of the first communication module, wherein the lockout status indicates whether the service handover of the first communication module may be initiated or must be deferred, to avoid coinciding with a service handover for the second communication module; and scheduling or locking the service handover for the first communication module based on said affiliation information or said lockout status, respectively. - obtaining affiliation information indicating affiliations between the first and second communication modules (14-1, 14-2) from a database, a further control node or a coordination node, wherein the affiliated first and second communication modules (14-1, 14-2) allow for redundantly accessing the wireless communication network, or - communicating with another control node or a coordination node to obtain a lockout status of the first communication module, wherein the lockout status indicates whether the service handover of the first communication module may be initiated or must be deferred, to avoid coinciding with a service handover for the second communication module; and scheduling or locking the service handover for the first communication module based on said affiliation information or said lockout status, respectively.