Patent ID: 7835277

Claim:
A method for managing a buffer of a Radio Access Station (RAS) in a communication system, the method comprising: setting a threshold for each of a plurality of service classes; upon receipt of a packet at the buffer, estimating a size of an available space of the buffer after the receipt of the packet; comparing the estimated size with a first threshold corresponding to a first service class indicative of the service of the packet; scheduling at least one of a packet input and a packet output of the buffer according to a result of the comparison; transmitting a first service stop message indicating a stop of the first service to a processor module; upon receipt of a first service stop response message from the processor module, stopping the first service; and upon failure to receive the first service stop response message from the processor module for a preset retransmission time, retransmitting the first service stop message to the processor module, wherein the scheduling comprises stopping the first service and stopping inflow of the packet if the estimated size is less than the first threshold.