Cross-Layer Protocol as a Better Option in Wireless Mesh Network with Respect to Layered-Protocol.

The Optimal way to improve Wireless Mesh Networks (WMNs) performance is to use a better network protocol, but whether layered-protocol design or cross-layer design is a better option to optimize protocol performance in WMNs is still an on-going research topic. In this paper, we focus on cross-layer protocol as a better option with respect to layered-protocol. The layered protocol architecture (OSI) model divides networking tasks into layers and defines a pocket of services for each layer to be provided individually, The design of the protocol makes the services realized for different layers, No direct communication between nonadjacent layers is permitted as the architecture forbids such action, also communication is limited to procedure calls and responses between adjacent layers. Whereas the cross-layer design violates the reference architecture , By allowing direct communication between protocols at nonadjacent layers, and allows sharing variables between layers, which gives it a better performance that would satisfy the wireless mesh network demands.