A comparative analysis and design study of cross layer scheme based algorithm to increase the Qos performances in wireless communication

Mobile an ad hoc network is a self organizing wireless network for built spontaneously to connect the mobile devices. It does not require any fixed infrastructure due to no wired backbone. It is suitable to use in the environment that have need of on the fly set-up. Every host is a router and packet forwarder. Each node may be mobile, and topology changes frequently and unpredictably due to the arbitrary mobility of mobile nodes. This aspect leads to frequent path failure and route rebuilding. Routing protocol development depends on mobility management, efficient bandwidth and power usage which are critical in ad hoc networks. Cross layer scheme is the new method for wireless mobile devices become to increase the capacity network. This paper, proposed a new cross layer scheme based algorithm to increase the throughput in MANETs. This present three schemes to reduce packet retransmission ratio by distribution signal information between physical layer and MAC layer, and to discuss the frequent route failures in MANET by identify shortly to be broken links instead of prediction of received signal power, To find optimized route maintenance by taking into consideration of Bandwidth, Delay which results by improvement of QoS. The performance of cross layer process for all the schemes simulation are carried out to evaluate network performance using network simulator NS-2 based on the basic parameters like Throughput, Jitter and packet delivery ratio (PDR) in term of number of nodes when various pause times.