Contents-aware multicast in rate adaptive wireless networks

We propose a contents-aware multicast (CAM) scheme in rate adaptive wireless networks. In CAM, transmission rate is determined depending on the contents type. That is, base layer packets are transmitted by the lowest rate for higher reliability. On the contrary, enhancement layer packets are sent by higher transmission rates. Moreover, enhancement layer packets are combined with base layer packets and redundantly transmitted, which allow higher decoding probability in error-prone wireless networks.