1. A MID SEMESTER REVIEW PRESENTATION ON An enhanced congestion control with cross layer approach using OLSR on MANET 3/6/2017ME SEM-3 DP-1 PRESENTATION1 Present By: Guided By: Katariya Pinali N.Dhaval M Nimavat 150030702007Assistant Professor, ATMIYA INST OF TECH & SCI 003,RAJKOT

2. Outline INTRODUCTION LITERATURE REVIEW PROBLEM DEFINITION RELATED WORK COMPARATIVE ANALYSIS PROPOSED WORK IMPLEMENTATION WORK CONCLUSION PAPER PUBLICATION DP-1 COMMENTS SOLUTION REFERENCES 3/6/2017ME SEM-3 DP-1 PRESENTATION2

3. Introduction to MANET MANETs are wireless networks consisting of dynamic nodes that are self-configurable and infrastructure-less[1]. Ad-hoc networks are basically peer-to-peer multi-hop mobile wireless networks where information packets are transmitted in a “store-and- forward” manner from a source to destination, via intermediate nodes. The routing protocols in MANETs can be classified into two main types: Proactive and Reactive. 3/6/2017ME SEM-3 DP-1 PRESENTATION3 Fig.1 mobile ad-hoc network

4. Introduction to MANET MANET challenges:  Restricted wireless transmission range  Time-varying wireless link characteristics  Broadcast nature of the wireless medium  Packet losses due to transmission errors  Mobility-induced route changes  Mobility-induced packet losses  Battery constraints  Potentially frequent network partitions  Routing  Quality of Service & Security 3/6/2017ME SEM-3 DP-1 PRESENTATION4

5. Introduction to cross layer approach “Cross layer design is a concept to modern protocol that communicate in network virtually between layers and their boundaries”[7]. It is use for better network efficiency and performance. Cross layer design having six different types, depend on its efforts to improvement[6]. 3/6/2017ME SEM-3 DP-1 PRESENTATION5

6. Comparison of OSI layer and cross layer design 3/6/2017ME SEM-3 DP-1 PRESENTATION6 Fig.2 OSI architecture[1] Fig.3 cross layer architecture[1]

7. Literature Review Paper 1 (base) “An Efficient Congestion Control Scheme Using Cross-Layered Approach and Comparison of TCP Variants for Mobile Ad-hoc Networks (MANETs)” AuthorSneha V. Sangolli, Jayavignesh Thyagarajan Publication & Year IEEE 2014 Summary  In this paper, they used TCP-Tahoe, TCP-New Reno and TCP-Vegas, run over AODV routing protocol for congestion control.  It is discussed that every packet loss is considered as a sign of congestion and unnecessary retransmissions and slowing down the sending rate results in poor performance.  None of the TCP variants able to work proactively to avoid packet loss, so here cross layer approach is applied to identify correct network event.  In this paper suggest exponential averaging and employ an energy efficient routing protocol in window based exponential averaging scheme. 3/6/2017ME SEM-3 DP-1 PRESENTATION7

8. Literature Review Paper 2 (base) “Performance of OLSR in MANETs with Cross-Layer Metrics and TCP/UDP flows” AuthorM. Colizza, M. Pratesi, F. Santucci, S. Pollio, G. Rigazzi Publication & Year IEEE 2012 Summary  Here in this paper they have focused on investigate traffic related performance for TCP/UDP-based traffic flows in a MANET by OLSR with various routing metrics.  Here they have worked on PER based metrics and also used cross layer approach to improve robustness against changes in network mobility to evaluate performance in the traffic condition.  As a future work, this PER metrics is also used to select high throughput(more efficient) paths for TCP based services, simultaneously using low delay paths for real time services. 3/6/2017ME SEM-3 DP-1 PRESENTATION8

9. Literature Review Paper 3“Performance Comparison of TCP variants over AODV, DSDV, DSR, OLSR in NS-2” AuthorMd. Monzur Morshed, Meft ah Ur Rahman, Md. Habibur Rahman, Md. Rafiqul Islam Publication & Year IEEE 2012 Summary  In this paper, analysis of TCP variation such as Reno, New-Reno, Vegas, and Tahoe under routing protocol AODV, DSDV, DSR, OLSR discussed.  They have used QoS metrics such as drop, throughput, delay, and jitter for performance compression.  Simulation result shows TCP-Vegas out of all TCP variants gives best output and among network layer protocol OLSR and AODV performs better. 3/6/2017ME SEM-3 DP-1 PRESENTATION9

10. Literature Review Paper 4“A Cross Layer Routing Matric for Gateway Aware Routing in Wireless Mesh Network” AuthorNarayan D. G., Kumar Sugnani, Abhishek Raichur, Uma M Publication & Year IEEE 2013 Summary  In this paper they have focused on network gateway for optimization operation.  They have proposed a new metric for gateway routing by using cross layer approach and OLSR routing protocol.  It gives better throughput and average end-to-end delay compare to load aware expected transmission time(LAETT). The performance differential analyzed for both static and dynamic scenarios. 3/6/2017ME SEM-3 DP-1 PRESENTATION10

11. Literature Review Paper 5“A Cross-Layer Design Approach in OLSR MANET using BER and Weighted Connectivity Index” AuthorTeerapat Sanguankotchakorn, Sanika K. Wijayasekara, Nobuhiko Sugino Publication & Year IEEE 2013 Summary  In this paper they have proposed the heuristic approach based on cross layer design to enhanced performance of OLSR by using BER derived from physical layer together with network layer parameter weighted connectivity index(CI).  They have used throughput, PDR, average end-to-end delay as a performance metric.  They have concluded that cross layer framework enhances OLSR protocol by considering link quality in terms of BER from physical layer and CI from network layer. 3/6/2017ME SEM-3 DP-1 PRESENTATION11

12. Research gap From the literature survey it has been observed that packet loss is considered a reason for congestion. None of the TCP variants and network layer protocol works proactively to avoid packet loss. We also observed that cross layer approach along with routing protocol OLSR can be used to optimize performance in packet loss situation. Earlier research never used OLSR along with cross layer approach to avoid congestion. 3/6/2017ME SEM-3 DP-1 PRESENTATION12

13. Related work Disconnection, link layer contention, buffer over – flow are one of the reason for packet loss results in congestion. For resolve this various TCP variants and routing protocols are used but none of the gives satisfactorily output. As an alternative to communicate directly between layers, cross layer approach is useful. Similarly OLSR used at many places as its proactive nature. 3/6/2017ME SEM-3 DP-1 PRESENTATION13

14. Proposed work An analysis the cross layer approach with OLSR routing protocol over TCP variants. Using these three calculate high throughput and low delay(end-to-end delay) for packet transmission. The simulation environment developed using ns-2. 3/6/2017ME SEM-3 DP-1 PRESENTATION14

15. Conclusion and Further work Here we use transport layer and network layer collaborating with data link layer. OLSR routing protocol with cross layer approach using TCP variants by using high throughput and low delay(end to end delay) for congestion control in packet transmission environment. 3/6/2017ME SEM-3 DP-1 PRESENTATION15

16. References [1] Sneha V. Sangolli, Jayavignesh Thyagarajan “An Efficient Congestion Control Scheme Using Cross- Layered Approach and Comparison of TCP Variants for Mobile Ad-hoc Networks (MANETs)” 2014 IEEE. [2] M. Colizza, M. Pratesi, F. Santucci, S. Pollio, G. Rigazzi “Performance of OLSR in MANETs with Cross-Layer Metrics and TCP/UDP flows” 2012 IEEE. [3] Md. Monzur Morshed, Meft ah Ur Rahman, Md. Habibur Rahman, Md. Rafiqul Islam “Performance Comparison of TCP variants over AODV, DSDV, DSR, OLSR in NS-2 ” 2012 IEEE. 3/6/2017ME SEM-3 DP-1 PRESENTATION16

17. References [4] Narayan D. G., Kumar Sugnani, Abhishek Raichur, Uma M “A Cross Layer Routing Metric for Gateway Aware Routing in Wireless Mesh Network ” 2013 IEEE. [5] Teerapat Sanguankotchakorn, Sanika K. Wijayasekara, Nobuhiko Sugino “A Cross-Layer Design Approach in OLSR MANET using BER and Weighted Connectivity Index” 2013 IEEE. [6] John A. Stine Member “Cross-Layer Design of MANETs: The Only Option ” IEEE. 3/6/2017ME SEM-3 DP-1 PRESENTATION17

18. References [7] Anshu Chaturvedi, D.N. Goswami, Shivjay Singh “Energy Aware Route Selection Algorithm for Cross Layer Design over MANET” 2015 IEEE. 3/6/2017ME SEM-3 DP-1 PRESENTATION18