insignia : a qos architectural framework for manets course :- software architecture & design
DESCRIPTION
INSIGNIA : A QOS ARCHITECTURAL FRAMEWORK FOR MANETS Course :- Software Architecture & Design Team Members 1.Sameer Agrawal 2.Vivek Shankar Ram.R. INTRODUCTION. MANETS – Mobile Ad hoc networks QOS in MANETS - a technical challenge - PowerPoint PPT PresentationTRANSCRIPT
INSIGNIA : A QOS ARCHITECTURAL FRAMEWORK
FOR MANETS
Course:-Software Architecture & Design
Team Members
1.Sameer Agrawal
2.Vivek Shankar Ram.R
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 ?
THE ARCHITECTURE
Routing protocol
INSIGNIASignaling
Admission Control
Packet forwarding
Packet scheduling
Routing updates
Locally send/deliver packets
In-band signaling Mobile
Soft stateRouting table control Channel state
MAC
MAC
IP packets in IP packets out
Packet-drop
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
STYLE• UNIQUE ARCHITECTURE
• FOLLOWS ABSTRACT DATA TYPE STYLE and REPOSITORY.
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
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.
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
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.
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.
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.
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.
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 ([email protected]) Department of Computer Science University of California – Riverside 3201 Canyon Crest Dr,Riverside CA 92507, USA
THANK YOU