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I. Introduction functionalities associated to the original layers but to allow WSN have presented itself with lots of challenges from its evolution. coordination, interaction and joint optimization of protocols In tradition communication networks, the OSI layered architecture crossing different layers. has been widely adopted and has served many communication systems well in the past; however evolving WSN of today are II. Related work advantages of cross layer design seriously challenging this design philosophy [1]. Cross layer design in WSN represents a suitable technology to overcome some of the current The main aim of Cross Layer Design is to improve network limitations of TCP/IP stack, especially in the case of wireless efficiency and to satisfy QoS demands of different applications with networks. All the problems in OSI layered architecture demonstrate the purpose of increasing network performance and optimized the need of Cross Layer Design. The CLD is a technique of breaking network throughput in WSN [3]. CLD is a suitable technology to of OSI layers in communication networks which includes merging of overcome some of the current limitations of TCP/IP stack, layers, creation of new interfaces, providing additional minimizes transfer load by sharing information among different interdependencies between any two layers. CLD approach has been non-adjacent layers [4]-[5]. designed for the purpose of interaction between any two non-