Cross Layer Design Approach in Wireless Mobile ADHOC Network Architecture

Abstract: Traditional Wired network uses protocol architectures follow the principle of stack layered implemented by ISO/OSI model. ISO/OSI model was developed to support all the standardization of the network architecture using layered model. Initially wireless network also adopts the traditional stack layered architecture from the wired networks. This Layered architectures are not efficiently cope up with the dynamically changing environment in the wireless-dominated next-generation communications with a wide range of Quality of Service (QoS) requirements. Wireless network performance can be degraded due to the adaptation of the protocols from layered architecture and Transmission control protocol/ Internet Protocol (TCP/IP), which was designed originally for wired network. However, lack of coordination between layers limits the performance of such architectures due to the specific challenges posed by wireless nature of the transmission links. In this paper a new cross layer design is adopted in wireless mobile Adhoc network in order to overcome the network performance problems. Since nowadays wireless networks are becoming very popular technology. In the Mobile Adhoc network, cross-layer design allows the protocol that belong to different layers which cooperate in sharing network-status information while still maintaining the layers separation at the design level. Cross-layer design has been proposed to maintain the functionalities associated to the original layers but to allow coordination, interaction and joint optimization of protocols crossing different layers.

Keywords: Wireless mobile ADHOC network Architecture, QoS, Cross Layer Design, TCP/IP, ISO/OSI