Performance Analysis of Multimedia Data Transmission with PDA over an Infrastructure Network

Various experiments were conducted to measure and analyze the performance of transmission of multimedia data with PDA as a mobile host over an infrastructure network. Our test-bed network consists of the infrastructure network integrating a wireless network based on IEEE 802.11b with wired Internet. For an analysis of the performance, we have measured the time of transferring a wave file (about 469Kbytes) from PDA to a desktop server or vice versa over the wireless network by changing the size of a packet from 256 bytes up to 7128 bytes on application layer. As the size of a packet becomes larger, the time elapsed to transfer the data from PDA to the server or vice versa becomes shorter in the wireless network. Even with the size of a packet greater than the maximum segment size of TCP on transport layer, the transmission time also becomes shorter inversely proportional to the size of a packet.