Date Added: May 2012
Computer network today are becoming popular day by day in the day to day life. The users are looking forward to use wireless technologies such as Bluetooth, WLANs based on the IEEE 802.11 Standards, etc. that allow them to share information via wireless media. The user can access the network to communicate with each other anywhere and anytime using the communication devices. The wireless network has several advantages over the wired technologies like flexibility, mobility, cheaper and faster deployment, easier maintenance and upgrade procedures. Cross-layer design refers to protocol design done by actively exploiting the dependence between the protocol layers to obtain better network performance in terms of throughput, average end to end delay, etc.