INSIGNIA : A QOS ARCHITECTURAL FRAMEWORK FOR MANETS Course :- Software Architecture & Design Team Members 1.

1. INSIGNIA : A QOS ARCHITECTURAL FRAMEWORK FOR MANETS Course:-Software Architecture & Design Team Members 1.Sameer Agrawal 2.Vivek Shankar Ram.R

2. INTRODUCTION • MANETS – Mobile Ad hoc networks • QOS in MANETS - a technical challenge • INSIGNIA QOS Architectural framework – supports delivery of adaptive services in MANETS • What are we going to see ?

3. THE ARCHITECTURE Locally send/deliver packets Routing protocol INSIGNIA Signaling Admission Control Routing updates In-band signaling Channel state Mobile Soft state control Routing table Packet-drop MAC MAC Packet forwarding Packet scheduling IP packets out IP packets in

4. CONSTITUENTS OF THE ARCHITECTURE • STYLE • Abstraction of architectural components from various specific architectures. • COMPONENTS • From which systems are built • CONNECTIONS • Between the components • CONSTRAINTS • On components, connections and layout. • RATIONALE • describe why the particular architecture is chosen

5. STYLE • UNIQUE ARCHITECTURE • FOLLOWS ABSTRACT DATA TYPE STYLE and REPOSITORY.

6. COMPONENTS • ROUTING MODULE • Generic set of MANET routing protocols can be plugged in to the architecture. • Tracks changes, updates routing table and makes that visible to the packet forwarding component. • INSIGNIA SIGNALING • Establishes flow restoration algorithm which respond to dynamic route changes. • Establishes adaptation algorithm which respond to changes in available bandwidth. • ADMISSION CONTROL • Responsible for allocating bandwidth to flows based on their minimum/maximum bandwidth. • It is periodically refreshed after allocating resources by a soft state mechanism through the reception of data packets

7. COMPONENTS (contd…) • PACKET SCHEDULING • Uses a weighted round robin service. • Provides compensation in the case of location dependent conditions between mobile nodes. • PACKET FORWARDING • Classifies incoming packet and forwards them to the appropriate module. • MEDIUM ACCESS CONTROL • This framework is transparent to any underlying media access control protocols.

8. INTERACTIONS • ROUTING UPDATES • The periodic updates on the routing table • INBAND SIGNALING • Carries control information along with the data packets • Flows/sessions are rapidly established • CONTROL • Controls the scheduling of the packets via the packet scheduling module

9. INTERACTIONS (contd…) • IP PACKETS IN • These are the input packets to the packet forwarding module. • IP PACKETS OUT • These are the output packets from the packet scheduling module.

10. CONSTRAINTS • FLOW – sequence of packets from a single source to one or more destinations representing a single media type. These flows require ADMISSION CONTROL, RESOURCE RESERVATION & MAINTENANCE at all Intermediate routers. • PERFORMANCE relies on the speed at which the routing protocol can re-compute new routes if no alternative route is cached after topology changes. • SOFT STATE relies on the fact that a source sends data packets along an existing path.

11. RATIONALE • Allows packet audio, video and real time data applications to specify their maximum & minimum bandwidth needs. • Plays a central role in resource allocation, restoration control and session adaptation between communicating mobile hosts. • Supports adaptive services by establishing and maintaining reservations for continuous media flows and micro flows. • In-band signaling are capable of responding to the fast time scale dynamics in MANETS.

12. CONCLUSION • Highly responsive to changes in network topology, node connectivity and end to end QOS conditions. • Benefits under diverse mobility, traffic, and channel conditions. • Use of in-band signaling and soft-state resource management makes the architecture very efficient, robust and scalable.

13. REFERENCES • G-S. Ahn, A. T. Campbell, S-B. Lee, and X. Zhang, ``INSIGNIA: An IP-Based Quality of Service Framework for Mobile ad Hoc Networks”, Journal of Parallel and Distributed Computing 60, 374_406 (2000). • ASAP Adaptive QoS Support with Reduced Reservation Overhead in MANETs - Patrick Stuedi, Jianbo Xue, Gustavo Alonso Swiss Federal Institute of Technology (ETHZ) Departement of Computer Science 8092, ETHZentrum,Switzerland {stuedip, xue, alonso}@inf.ethz.ch • A Glance at Quality of Services in Mobile Ad-Hoc Networks Zeinalipour-Yazti Demetrios (csyiazti@cs.ucr.edu) Department of Computer Science University of California – Riverside 3201 Canyon Crest Dr,Riverside CA 92507, USA

14. THANK YOU