A Comparison for Secured Transmission of Packets in Wireless LAN Using AES and ECC

Wireless local area network (WLAN) has increased rapidly, providing flexibility and mobility to the device users. This made the technology popular amongst a wide range of users in the universe. But one of the common problems we are overcoming is fragment loss. So far we were following a scheme to retransmit the entire packet if any fragment is lost. Here we introduce a new scheme called Aggregation with Fragment Retransmission (AFR). In this method, multiple packets are aggregated and transmitted in a single large frame reducing the access overheads and hence increasing the data rate. In addition, to investigate the performance added value when each large frame is fragmented so in the case of error in data frame, only the erroneous fragments are to be retransmitted reducing the error control overheads and this decreases the frame error rate without requiring more overhead. The advanced encryption standard is incorporated into existing aggregation method for 802.11 wireless LANs to achieve secure transmission of frames and compute the maximum throughput, optimal frame, and fragment sizes. The proposed system uses weighted fair scheduling with Advanced Encryption Standard (AES) for obtaining optimal fragment size and also used Elliptical curve cryptography (ECC) instead of AES to show that it will reduce the packet size which will be better than AES. We show that our proposed show increase in average rate of successful message delivery over a communication channel and increase in throughput.