1. A relay node, comprising:a processor configured to:
receive first information from a donor node;
transmit a request to the donor node based on the first information, wherein
the donor node establishes a wireless connection between the relay node and the donor node based on the request, and
the donor node connects to a core network;
receive a notification from the donor node, wherein the notification indicates the establishment of the wireless connection; and
transmit, via a control plane in the wireless connection, second information to the donor node based on the received notification, wherein the second information indicates a traffic volume associated with the relay node.