Date Added: Dec 2012
In a Mobile Ad-hoc Network, the wireless nodes usually self-configure to exchange information without the help of any centralized infrastructure or administrator. There is high mobility and rapid deployment of the mobile nodes. Hence, there is need for multi-hop transmission where nodes can forward other nodes information. A Cross-layer design allows interaction between the layers above or below it. The strict layered architecture may not be the best model for wireless network. It is difficult to optimize the network performance according to different situation without interaction among the different layers. In dynamic network, there is a need for different layers to cooperate closely to meet QoS requirements of the mobile application.