Analysis of QOS retention for transfer of multimedia data in wireless sensor networks

Abstract

This paper proposes a quality of service (QOS) retention for transfer of multimedia information in wireless sensor network. In this method selective encryption has been proposed for the H.264 video coding by an intention of expanding end user video quality. To keep the encrypted streaming format-compliance to the H.264/AVC standard decoder only I frames are encrypted with AES algorithm. The anticipated method can competently decrease the computing cost through improved quality along with bit-rate. Consequently the technique is extremely appropriate for real time operation. Compared to the other available techniques the performance of this scheme exhibited better benefits when tested on video sequence. Which include: negligible data processing delay by ciphering selected information, no bit rate acceleration by maintaining the compression ratio unaltered and format. Experimental outcome demonstrated that the proposed scheme effectively reflecting enhanced contribution of PSNR and MSE estimation for the recovered data.