Communication method in a wireless communication network using a plurality of channels each having a centre frequency and a bandwidth, said network comprising a plurality of connected objects and at least one gateway, said connected objects and the at least one gateway being able to transmit and receive messages in each of the channels, at least one of these channels, called beacon channel, being a one-way communication channel reserved for a periodic or quasi-periodic transmission of beacon messages by the gateways, said beacon messages comprising: • a preamble; • an indication either that the gateway wants to deliver a message or that it is able to receive at least one message; • an indication of at least one channel for exchanging at least one message; a method by which, a connected object of said plurality of connected objects transfers one of said messages to a gateway of said at least one gateway by executing the steps of: 1. listening to the beacon channel or channels to detect at least part of at least one of said beacon messages; 2. selection of one of said gateways transmitting a beacon message that can be perceived by the connected object; 3. reception of the beacon message transmitted by said selected gateway and verification by said connected object, by looking up the indication contained in the beacon message, that this gateway is able to receive a message; 4. transmission of said message by said connected object to said selected gateway over one of the at least one channel indicated in the beacon message; and/or said connected object of said plurality of the connected objects receives one of said messages from one of the at least one gateway by executing the steps of: 1. listening to the beacon channel or channels to receive at least one of said beacon messages; 2. verification by said connected object, by looking up the indication contained in the beacon message, that said gateway wants to deliver a message to said connected object; 3. reception of one of said messages by said connected object over one of the at least one channel indicated in the beacon message. • a preamble; • an indication either that the gateway wants to deliver a message or that it is able to receive at least one message; • an indication of at least one channel for exchanging at least one message; a connected object of said plurality of connected objects transfers one of said messages to a gateway of said at least one gateway by executing the steps of: 1. listening to the beacon channel or channels to detect at least part of at least one of said beacon messages; 2. selection of one of said gateways transmitting a beacon message that can be perceived by the connected object; 3. reception of the beacon message transmitted by said selected gateway and verification by said connected object, by looking up the indication contained in the beacon message, that this gateway is able to receive a message; 4. transmission of said message by said connected object to said selected gateway over one of the at least one channel indicated in the beacon message; and/or 1. listening to the beacon channel or channels to detect at least part of at least one of said beacon messages; 2. selection of one of said gateways transmitting a beacon message that can be perceived by the connected object; 3. reception of the beacon message transmitted by said selected gateway and verification by said connected object, by looking up the indication contained in the beacon message, that this gateway is able to receive a message; 4. transmission of said message by said connected object to said selected gateway over one of the at least one channel indicated in the beacon message; said connected object of said plurality of the connected objects receives one of said messages from one of the at least one gateway by executing the steps of: 1. listening to the beacon channel or channels to receive at least one of said beacon messages; 2. verification by said connected object, by looking up the indication contained in the beacon message, that said gateway wants to deliver a message to said connected object; 3. reception of one of said messages by said connected object over one of the at least one channel indicated in the beacon message. 1. listening to the beacon channel or channels to receive at least one of said beacon messages; 2. verification by said connected object, by looking up the indication contained in the beacon message, that said gateway wants to deliver a message to said connected object; 3. reception of one of said messages by said connected object over one of the at least one channel indicated in the beacon message.