A method of radio resource management in a wireless communication network in which radio identities allocable by the network from a finite set of radio identities are used for differentiating individual radio connections between a network node and respective wireless nodes , said method implemented by the network node in the network and comprising: assigning a first radio identity that is associated with a first service area (14-1) in the network to a first wireless node (18-1) for operation in the first service area (14-1); transferring use of the first radio identity from the first service area (14-1) to a second service area (14-2), and thereby using the first radio identity to continue the radio connection with the first wireless node (18-1) in conjunction with the first wireless node (18-1) moving from the first service area (14-1) to the second service area (14-2); and deferring any new assignment of the first radio identity within the first service area (14-1) until termination of a lending period, associated with the lent radio identity, governing the transfer of the first radio identity, wherein the network node further comprises a first radio network node (12-1) associated with the first service area (14-1), and wherein transferring the first radio identity comprises the first radio network node (12-1) sending lending signaling to a second radio network node (12-2) associated with the second service area (14-2), said lending signaling including an indication of the first radio identity, wherein the lending signaling is sent using a communications interface in the network node , the method further comprises indicating in said lending signaling one or more limitations restricting at least one of: how long the first radio identity may be used in the second service area (14-2) for the first wireless node (18-1); and whether or to what extent the first radio identity can be transferred from the second service area (14-2) for continued use of the first radio identity for the first wireless node (18-1) in a further service area . assigning a first radio identity that is associated with a first service area (14-1) in the network to a first wireless node (18-1) for operation in the first service area (14-1); transferring use of the first radio identity from the first service area (14-1) to a second service area (14-2), and thereby using the first radio identity to continue the radio connection with the first wireless node (18-1) in conjunction with the first wireless node (18-1) moving from the first service area (14-1) to the second service area (14-2); and deferring any new assignment of the first radio identity within the first service area (14-1) until termination of a lending period, associated with the lent radio identity, governing the transfer of the first radio identity, wherein the network node further comprises a first radio network node (12-1) associated with the first service area (14-1), and wherein transferring the first radio identity comprises the first radio network node (12-1) sending lending signaling to a second radio network node (12-2) associated with the second service area (14-2), said lending signaling including an indication of the first radio identity, wherein the lending signaling is sent using a communications interface in the network node , the method further comprises indicating in said lending signaling one or more limitations restricting at least one of: how long the first radio identity may be used in the second service area (14-2) for the first wireless node (18-1); and whether or to what extent the first radio identity can be transferred from the second service area (14-2) for continued use of the first radio identity for the first wireless node (18-1) in a further service area . <EOS>