Communication channel selection method

A method for selecting a communication channel in a wireless communication network comprising a backhaul network interconnecting node devices and intended to extend a radio coverage of a wireless fronthaul network by using a plurality of access points of the wireless fronthaul network,

• wherein a same first communication channel, selected by a master node device of the backhaul network, is used in the backhaul network to interconnect said node devices,
• wherein the method causing a node device of the backhaul network other than the master node device to perform:
• making an evaluation of transmission conditions of its radio environment,
• calculating, for each communication channel available to said node device, a score representing a quality of transmission via said communication channel according to the evaluation made,
• when at least one second communication channel shows a better score than the first communication channel, initiating, with said master node device, an evaluation of change of communication channel in favour of said at least one second communication channel;
• awaiting a decision of the master node device to change, or not, communication channel used in the backhaul network.

A method for selecting a communication channel in a wireless communication network comprising a backhaul network interconnecting node devices and intended to extend a radio coverage of a wireless fronthaul network by using a plurality of access points of the wireless fronthaul network, wherein c a same first communication channel, selected by a master node device of the backhaul network, is used in the backhaul network to interconnect said node devices, wherein the method causing the master node device to perform:

• making an evaluation of transmission conditions of its radio environment, and
• calculating, for each communication channel available to said master node device, a score representing a quality of transmission via said communication channel according to the evaluation made, and
• wherein, when, from the point of view of the master node device or of another node device of the backhaul network, at least one second communication channel shows a better score than the first communication channel, the method causing the master node device to perform:
• obtaining, from each other node device of the backhaul network, the score of the first communication channel and the score of at least one said second communication channel, to make an evaluation of change of communication channel;
• and
• deciding to change, or not, communication channel used in the backhaul network according to the scores obtained.

A node device, intended to be used in a wireless communication network comprising a backhaul network interconnecting said node device with other node devices and intended to extend a radio coverage of a wireless fronthaul network by using a plurality of access points of the wireless fronthaul network,

• wherein a same communication channel, selected by a master node device of the backhaul network, is used in the backhaul network for interconnecting said node devices,
• wherein the node device comprises circuitry causing the lode device perform:
• making an evaluation of transmission conditions of its radio environment,
• calculating, for each communication channel available to said node device, a score representing a quality of transmission via said communication channel according to the evaluation made,
• when at least one second communication channel shows a better score than the first communication channel, initiating, with said master node device, an evaluation of change of communication channel in favour of said at least one second communication channel;
• and
• awaiting a decision of said master node to change, or not, communication channel used in the backhaul network.

A master node device, intended to be used in a wireless communication network comprising a backhaul network interconnecting node devices and intended to extend a radio coverage of a wireless fronthaul network by using a plurality of access points of the wireless fronthaul network,

• wherein a same first communication channel, selected by the master node device, is used in the backhaul network for interconnecting said node devices,
• wherein the master node device comprises circuitry causing the master node device to perform:
• making an evaluation of transmission conditions of its radio environment;
• calculating, for each communication channel available to said master node device, a score representing a quality of transmission via said communication channel according to the evaluation made, and
• when, when, from the point of view of the master node device or of another node device of the backhaul network, at least one second communication channel shows a better score than the first communication channel, the master node device further comprises circuitry causing the master node device to perform:
• obtaining, from each other node device of the backhaul network, the score of the first communication channel and the score of at least one said second communication channel, for making an evaluation of change of communication channel;
• and
• deciding to change, or not, communication channel used in the backhaul network according to the scores obtained.