WIRELESS ACCESS ESTABLISHMENT

According to an example aspect of the present invention, there is provided a method, comprising: transmitting an association request from a wireless device to a first access node of a wireless network for associating the wireless device to the wireless network, wherein the wireless network comprises a centralized unit and a plurality of access nodes, including the first access node, receiving an association response from the first access node for associating the wireless device to the wireless network, performing carrier sensing on a plurality of channels; selecting a second access node among the plurality of access nodes in response to obtaining a transmission opportunity for a channel of the plurality of channels, wherein the selecting is based at least partly on a record of ongoing transmission opportunities, and transmitting data from the wireless device to the second access node during the transmission opportunity.