INSIGNIA : A QOS ARCHITECTURAL FRAMEWORK FOR MANETS

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

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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
Packet forwarding
Packet scheduling
MAC
IP packets out
IP packets in
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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

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STYLE

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

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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

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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.

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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

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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.

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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.

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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.

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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.

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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_at_inf.ethz.ch
• A Glance at Quality of Services in Mobile Ad-Hoc
  Networks Zeinalipour-Yazti Demetrios
  (csyiazti_at_cs.ucr.edu) Department of Computer
  Science University of California Riverside 3201
  Canyon Crest Dr,Riverside CA 92507, USA

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• THANK YOU