METHOD FOR OPERATING A NETWORK INFRASTRUCTURE-END NETWORK UNIT, NETWORK INFRASTRUCTURE-END NETWORK UNITS, METHOD FOR OPERATING A ROAD-END NETWORK UNIT, ROAD-END NETWORK UNIT

A method for operating a network infrastructure-side network unit of a cell-based wireless communication network is provided. The method includes ascertaining a first scheduling grant message, the first scheduling grant message including an assignment of at least one sidelink resource of the first sidelink channel to the roadside network unit; sending the first scheduling grant message to the roadside network unit on a downlink channel; receiving from the roadside network unit on the uplink channel an indication that the assigned sidelink resource of the first sidelink channel is occupied; ascertaining a second scheduling grant message, the second scheduling grant message including an assignment of at least one sidelink resource of a second sidelink channel in a licensed frequency range to the roadside network unit; and sending the second scheduling grant message to the roadside network unit on the downlink channel.