A method for offloading packet segmentations includes the steps of retrieving a packet segmentation offloading parameter in a packet and segmenting the packet into a plurality of sub-packets by taking consideration the packet segmentation offloading parameter. A device for offloading packet segmentations includes a packet parser configured to receive a packet to be transmitted, a header buffer controller configured to retrieve a header of the packet and connected to a buffer to access the header, an extractor configured to retrieve a packet segmentation offloading parameter in the packet, and a segmentation module configured to segment the packet into a plurality of sub-packets by taking consideration the header and the packet segmentation offloading parameter.