A base station, in a mobile communication network, includes a receive component to receive, from a higher rank station in the network, a particular data unit that includes multiple data units multiplexed together; a master processor to determine that the first portion of the particular data unit is destined for the base station and that the second portion of the particular data unit is not destined for the base station, and discard the second portion of the particular data unit; and a slave processor to determine that the second portion of the particular data unit is destined for the other base station and that the first portion of the particular data unit is not destined for the other base station, and send the second portion of the particular data unit to the other base station.