Method for identifying a node (121, 122) closest to a target device (110, 142) in a wireless communication coverage extension system comprising a backhaul subnetwork in the shape of a tree comprising a set of interconnected nodes (121, 122, 123, 124), a plurality of nodes (121, 122, 123, 124) of the backhaul subnetwork implementing a functionality of an access point of one and the same wireless communication network, the wireless communication coverage extension system being suitable for allowing devices (110, 141, 142, 143, 144) including said target device (110, 142) to be connected to said nodes (121, 122, 123, 124) via the wireless communication network or by wire in order to form a local area network, the method comprising the following steps: - monitoring messages exchanged during an address resolution phase, and obtaining therefrom an association between network address and Medium Access Control address of each device (110, 141, 142, 143, 144) connected to the local area network and node (121, 122, 123, 124) of the backhaul subnetwork; - filling in, in each said node (121, 122, 123, 124), an address resolution table, indicating therein each association between network address and MAC address obtained by said node (121, 122, 123, 124), and also interface wqinformation representing an interface of said node (121, 122, 123, 124) via which the message which allowed said association to be obtained was received; and, to identify the node (121, 122) closest to the target device (110, 142) among said nodes (121, 122, 123, 124) of the backhaul subnetwork, the method comprises an analysis of the resolution tables which includes the following steps: - scanning the address resolution tables in search of the association between network address and MAC address corresponding to said target device (110, 142), and obtaining therefrom the associated interface information; and - identifying the node (121, 122) closest to the target device (110, 142) as being the node the address resolution table of which does not reference any node of the backhaul subnetwork in association with said interface information. - monitoring messages exchanged during an address resolution phase, and obtaining therefrom an association between network address and Medium Access Control address of each device (110, 141, 142, 143, 144) connected to the local area network and node (121, 122, 123, 124) of the backhaul subnetwork; - filling in, in each said node (121, 122, 123, 124), an address resolution table, indicating therein each association between network address and MAC address obtained by said node (121, 122, 123, 124), and also interface wqinformation representing an interface of said node (121, 122, 123, 124) via which the message which allowed said association to be obtained was received; - scanning the address resolution tables in search of the association between network address and MAC address corresponding to said target device (110, 142), and obtaining therefrom the associated interface information; and - identifying the node (121, 122) closest to the target device (110, 142) as being the node the address resolution table of which does not reference any node of the backhaul subnetwork in association with said interface information.