A method for reactivating a part of a wireless communication network in accordance with one of the IEEE 802.11 standards comprising a plurality of gathering nodes organised in a parent/child hierarchy, at least one gathering node in said communication network, referred to as the current node, comprising an access-point radio-frequency interface (AP-B) and a user radio-frequency interface (ST-B) of a so-called gathering wireless network associated with the communication network, said access-point and user radio-frequency interfaces of said gathering network being deactivated in sending mode, the method being executed by said current node and being characterised in that it comprises; - receiving a first beacon frame sent by another node in said communication network, said first beacon node comprising state information indicating a reactivation in progress; and a) putting in memory an internal state of said current node to indicate that said node is being reactivated; b) reactivating (S620, S750), for said current node, all of its access-point and user radio-frequency interfaces of the gathering network; c) broadcasting (S630, S760) a second beacon frame comprising state information indicating a reactivation in progress so as to relay the state information indicating that a reactivation is in progress; and d) pairing (S640, S770) with a parent node and, in the case where said current node has child nodes, waiting until said child nodes pair with it, checking that the internal state of each of said child nodes indicates that said child node is reactivated and, in the case where said child nodes are reactivated, updating the internal state of said current node to indicate that said current node is reactivated, and, in the case where said current node does not have a child node, updating the internal state of said current node to indicate that said current node is reactivated.. - receiving a first beacon frame sent by another node in said communication network, said first beacon node comprising state information indicating a reactivation in progress; and a) putting in memory an internal state of said current node to indicate that said node is being reactivated; b) reactivating (S620, S750), for said current node, all of its access-point and user radio-frequency interfaces of the gathering network; c) broadcasting (S630, S760) a second beacon frame comprising state information indicating a reactivation in progress so as to relay the state information indicating that a reactivation is in progress; and d) pairing (S640, S770) with a parent node and, in the case where said current node has child nodes, waiting until said child nodes pair with it, checking that the internal state of each of said child nodes indicates that said child node is reactivated and, in the case where said child nodes are reactivated, updating the internal state of said current node to indicate that said current node is reactivated, and, in the case where said current node does not have a child node, updating the internal state of said current node to indicate that said current node is reactivated.. a) putting in memory an internal state of said current node to indicate that said node is being reactivated; b) reactivating (S620, S750), for said current node, all of its access-point and user radio-frequency interfaces of the gathering network; c) broadcasting (S630, S760) a second beacon frame comprising state information indicating a reactivation in progress so as to relay the state information indicating that a reactivation is in progress; and d) pairing (S640, S770) with a parent node and, in the case where said current node has child nodes, waiting until said child nodes pair with it, checking that the internal state of each of said child nodes indicates that said child node is reactivated and, in the case where said child nodes are reactivated, updating the internal state of said current node to indicate that said current node is reactivated, and, in the case where said current node does not have a child node, updating the internal state of said current node to indicate that said current node is reactivated..