Patent ID: 7929558
Filing Date: 2011-04-19
Classification: H04L,H04W

Abstract:
1. A method for buffering a receive packet in a sensor node including a radio frequency (RF) transceiver, a media access control (MAC) hardware block and a micro controller unit (MCU), comprising the steps of: a) receiving a packet from the RF transceiver and checking if a packet is pre-stored in a receive first in first out (FIFO); b) if the pre-stored packet exists in the receive FIFO at step a), checking whether a length of the received packet is the same as the length of the pre-stored packet in the receive FIFO; c) if the length of the received packet is the same as the length of the pre-stored packet in the receive FIFO at step b), increasing a number of packets that is included in header information of the pre-stored packet corresponding to buffered payloads, and buffering only a physical payload of the packet in the receive FIFO; and d) if the pre-stored packet does not exist in the receive FIFO at step a) or if the length of the received packet is not the same as the length of the pre-stored packet in the receive FIFO, consecutively buffering both the physical payload and the header of the received packet in the receive FIFO.