Mobile Reservation Protocol

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Mobile Reservation Protocol
Yaser Khamayseh Computing Science
Department University of Alberta
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Agenda

• Introduction
• QoS
• RSVP
• RSVP over Mobile
• Mobile IP
• Mobile RSVP approaches
• New Approach
• Summary

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Introduction and Background

• Mobile User Accessibility to networks
• Mobile users
• Easier Accessibility
• Increased number of users
• Real time applications demands
• QoS

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QoS

• QoS Mechanisms
• DiffServices
• Classification (priority)
• IntServices
• RSVP Protocol

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QoS (contd.)

• QoS Parameters
• Packet Delay
• Packet Loss Ratio
• Delay Jitter
• Throughput

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RSVP

• Control Protocol
• Path Messages
• SENDER_TEMPLATE
• SENDER_TSPEC
• ADSPEC
• PHOP
• Resv Messages
• FLOWSPEC (RSPEC and TSPEC)

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Mobile Networks

• Base Station
• Mobile Node
• Home Agent
• Foreign Network
• Foreign Agent
• Care-of-Address
• Correspondent node

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Mobile IP

• Not suitable for Mobile Network
• Limitations
• Home Agent Location
• Triangle Routing
• Tunneling
• MIP Route Optimization
• Binding update message
• Binding warning message

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Mobile IP and RSVP

• Packets Tunneling (non-RSVP cloud)
• Router will not be able to do data packet
  filtering

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Mobile RSVP

• Design issues to be consider
• Mobility
• High packet loss
• Lower Bandwidth
• Power constraints

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Mobile RSVP General Approach

• Advance reservation in all neighbouring cells
• Home Agent and Remote Agents
• Active Reservation and Passive Reservation

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Mobile RSVP Approaches

• RSVP with CBQ
• MRSVP
• Mobility Support based on IP Multicast
• Mobile IPv6 and RSVP
• RSVP Extension

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RSVP with CBQ

• Micro-cellular Network
• Modify RSVP to recognize Passive and Active
  Reservation
• Modified CBQ used for packet scheduling and
  classification.
• Classifier
• Estimator
• scheduler
• Only trigger messages will be send to the passive
  reservation (reduce number of control messages)

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RSVP with CBQ

• The algorithm modifications
• 1-Mobility
• Probability of seamless communication
• Rate reduction factor
• 2- Losses
• Loss profile (bursty/distributed loss)
• Performance feedback factor
• 3- Power Restriction
• Power level
• Power profile

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MRSVP

• Advance Reservation (Mspec)
• Local proxy and remote proxy (proxy discovery
  protocol).
• Passive reservation handled by
• Packet Classifier
• Admission Control

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MRSVP

• RSVP Operations
• Proxy Agent discovery
• Setting up routes for active and passive
  reservation
• Reservation setup
• Merging reservation messages
• Switching between active and passive reservation
• Soft state maintenance
• Tearing down of reservation
• Confirmation and handling of error messages

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MRSVP (Contd.)

• Additional Messages
• Join_Group
• Receive_Spec
• Sender_Spec
• Receiver_Mspec
• Sender_Mspec
• Forward_Mspec
• Terminate

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MRSVP (CONT.)

• Drawbacks
• Waste the network resources
• BS has to maintain a lot of state information
• May results in high blocking rate

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Mobility Support based on IP Multicast

• IP datagrams and RSVP messages are delivered to a
  mobile host using IP multicast routing.
• Multicast Tree and Mobile Proxy
• Dynamic Modification to the Tree
• Mobility of host is modeled as a transition in
  multicast group membership
• Drawbacks
• Inefficient (advance reservation)
• Overload (manage multicast tree)

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Mobile IPv6 and RSVP

• Benefit from the route optimization field in IPv6
  to reserve resources directly between the MN and
  CN.
• End-to-end RSVP negotiation
• Notable service degradation

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RSVP Extension

• Three classes of services
• Guaranteed service (GS)
• Controlled-load service (CLS)
• Best-effort service (BES)
• Dynamic Resource Allocation Scheme

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New QoS Parameters

• Loss profile
• Probability of seamless communication
• Performance feedback factor
• Power level
• Power profile
• Rate reduction factor
• Handoff Drop Rate (Blocking Rate)

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New Approach

• Standardization
• Efficiency (QoS)
• Simplicity
• Comprehensive
• ....