Patent ID: 7636368

Claim:
A buffer apparatus for packet data aggregation, comprising: a buffer for buffering packet data to be transmitted on a frame basis; an aggregator for representing positions of the buffered packet data in a Frame Descriptor (FD) bitmap and a Traffic Identifier (TID) bitmap according to a predetermined Access Category (AC) and a TID of the buffered packet data, and providing a bitmap indicating the positions of packet data to be aggregated according to an aggregation condition to an aggregation controller; and the aggregation controller for aggregating the packet data based on the bitmap received from the aggregator, constructing an aggregation Physical Service Data Unit (PSDU) with the aggregated packet data, and transmitting the aggregation PSDU to a destination, wherein bits of the FD bitmap and TID bitmap correspond on a one-to-one basis to indexes of FDs managing memory addresses of the buffered packet data, wherein the FD bitmap indicates the positions of FDs in the predetermined AC, and wherein the TID bitmap indicates the positions of FDs having a predetermined TID in the predetermined AC.