A method, apparatus, and computer program for routing messages between terminal devices of a wireless network are provided. A terminal device of the wireless network generates a signaling message to be transmitted as a broadcast or multicast message to at least one other terminal device of the wireless network, causes transmission of the signaling message as a unicast message to the access node and, after transmitting the unicast message to the access node, receives the signaling message from the access node as the broadcast or multicast message. Further explanations: terminal devices (of a WLAN) broadcast or multicast control messages between each other by employing the access node (AP) as a broker for the signaling messages. For instance, channel reservation messages are encapsulated as unicast messages and sent to an AP to broadcast such reservation messages to other terminals competing for the same channel access. Each terminal adapts its channel reservations based on the information broadcasted by the other terminals via the AP. Alternatively, terminal devices may exchange information about the services they support.