Method of discovering surrounding access points of a legacy mobile device within a network wherein the mobile device has a wireless network interface, the network comprises a plurality of wireless access points and a blacklist (211, 221, 231) is implemented for each of the plurality of access points, the method comprising: providing a control entity being connected to each of the plurality of access points; establishing a connection between the mobile device and an initial access point (21, 22, 23) of the access points via the wireless network interface of the mobile device; the initial access point (21, 22, 23) transmitting an identifier of the mobile device to the control entity; the control entity transmitting a blacklist add message to each of the plurality of access points, wherein the blacklist add message comprises the identifier of the mobile device and an indication to add the identifier of the mobile device in the respective blacklist (211, 221, 231) of each of the plurality of access points; the initial access point (21, 22, 23) sending a disassociation message to the mobile device for clearing the association with the mobile device; the mobile device transmitting a request for access to another access point (21, 22, 23) of the plurality of access points wherein the request comprises the identifier of the mobile device; the another access point (21, 22, 23) rejecting the request of the mobile device and transmitting information about the rejection to the control entity wherein the rejection information comprises the identifier of the mobile device and an identifier of the another access point (21, 22, 23); the mobile device repeating the step of transmitting a request to another access point (21, 22, 23) until the mobile device has send an access request to each of the plurality of access points and/or after a timeout has expired, wherein the wireless network interface of the mobile device and the access points are arranged to communicate based on IEEE 802.11. providing a control entity being connected to each of the plurality of access points; establishing a connection between the mobile device and an initial access point (21, 22, 23) of the access points via the wireless network interface of the mobile device; the initial access point (21, 22, 23) transmitting an identifier of the mobile device to the control entity; the control entity transmitting a blacklist add message to each of the plurality of access points, wherein the blacklist add message comprises the identifier of the mobile device and an indication to add the identifier of the mobile device in the respective blacklist (211, 221, 231) of each of the plurality of access points; the initial access point (21, 22, 23) sending a disassociation message to the mobile device for clearing the association with the mobile device; the mobile device transmitting a request for access to another access point (21, 22, 23) of the plurality of access points wherein the request comprises the identifier of the mobile device; the another access point (21, 22, 23) rejecting the request of the mobile device and transmitting information about the rejection to the control entity wherein the rejection information comprises the identifier of the mobile device and an identifier of the another access point (21, 22, 23); the mobile device repeating the step of transmitting a request to another access point (21, 22, 23) until the mobile device has send an access request to each of the plurality of access points and/or after a timeout has expired, wherein the wireless network interface of the mobile device and the access points are arranged to communicate based on IEEE 802.11.