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QoSperformance of IEEE 802.11 in MAC and PHY layer using Enhanced OAR Algorithm


  • Rayalaseema University, Nandyala Road, Kurnool - 518002, Andhra Pradesh,, India
  • Adikavi Nannaya University, Rajah Rajah Narendhra Nagar, Rajahmundry - 533296, Andhra Pradesh,, India
  • Deptatment of Computer Science, SRR & CVR Government Degree College, Eluru Road, Machavaram, Vijayawada - 520004, Andhra Pradesh,, India


Objective: The main objective of our research is to improve the QoS in Media Access Control (MAC) and Physical (PHY) layer and to provide more deterministic network performance so that data’s that were transferred by the network nodes could in a better quality and network resources could be utilized effectively. Methods/ Statistical Analysis: The performance of QoS of IEEE 802.11 in MAC and PHY layer are studied using an enhanced opportunistic auto rate protocol e-OAR.The proposed algorithm uses distributed protocol for access control. This works by providing delay to the packets to increase efficiency of output. By allocating nodes in the basis, strength and efficiency of nodes will increase transmission efficiency by the help of e-OAR. Findings: The main function of MAC layer is secure packet delivery, access control and security in a network. PHY layer in IEEE802.11 standard describes two forms of spread spectrum modulation. The enhancement required in order to get a good QoS is by minimizing the time delay in transfer of data in physical nodes as the nodes are made of physical parts loss less transmission. For the competent use of a multi-rate physical layer, an e-OAR might be used which is very close to MAC layer. Absolute QoS guarantees is critical to provide, the relative QoS guarantees may be equipped by differentiation services. But, to provide characterized services, 802.11 protocols needs to be altered and it introduces three means for modifying DCF performance of 802.11 for assisting the differentiation of service. It decreases packet delay for improving performance of the system. Applications/Improvements: The QoS of IEEE 802.11 in MAC and PHY layer for improving throughput and packet delay of channel by using an e-OAR performance is interpreted in this study. The relative proposal guarantees are achieved using service differentiation DCF.


Ad-hoc network, Enhanced Opportunistic Auto Rate Algorithm, MAC Layer, PHY Layer, Quality of Service

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