Systems and methods are provided for flow control in a wireless communication system. In certain aspects, an apparatus for wireless communications comprises an interface configured to receive, from awireless node, one or more parameters specifying a memory at the wireless node, and an indication of an amount of free memory space in the memory at the wireless node. The apparatus also comprises a processing system configured to determine a number of data units to be transmitted to the wireless node based on the indication of the amount of free memory space and the one or more parameters, wherein the interface is further configured to output data units for transmission to the wireless node, wherein a number of the data units output for transmission to the wireless node equals the determinednumber of data units.