Cross Layer Design for Multimedia Transmission over Wireless Networks

This chapter examines the issue of cross layer design for multimedia transmission over wireless networks. In wireless networks multimedia data transmission inherits all the characteristics and constrains related to the propagation to the free space. One first striking difference between wired and wireless networks is the cause of packet losses. Packet losses in wired networks mainly occur due to congestion in the path between the sender and the receiver, while in wireless networks packet losses mainly occur due to corrupted packets as a result of the low Signal to Noise Ratio (SNR), the multi-path signal fading and the interference from neighboring transmissions. A second difference between wired and wireless networks is the “mobility factor”. Mobility in wireless networks AbstrAct