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MANET: Introduction

MANET: Introduction. Reference: “Mobile Ad hoc Networking (MANET): Routing Protocol Performance Issues and Evaluation Considerations”; S. Corson and J. Macker, RFC 2501, 1999. (rfc2501.htm). Introduction. Mobile Ad hoc Networking ( MANET )

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MANET: Introduction

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  1. MANET: Introduction Reference:“Mobile Ad hoc Networking (MANET): Routing Protocol Performance Issues and Evaluation Considerations”; S. Corson and J. Macker, RFC 2501, 1999. (rfc2501.htm)

  2. Introduction • Mobile Ad hoc Networking (MANET) • To support robust and efficient operation in mobile wireless networks by incorporating routing functionality into mobile nodes • Such networks are envisioned to have dynamic, sometimes rapidly-changing, random, multihop topologies which are likely composed of relatively bandwidth-constrained wireless links • Goal: to extend mobility into the realm of autonomous, mobile, wireless domains, where a set of nodes– which may be combined routers and hosts– themselves form the network routing infrastructure in an ad hoc fashion

  3. Applications • Industrial and commercial applications involving cooperative mobile data exchange • “Wearable” computing and communications • Combined with satellite-based information delivery • Provide an extremely flexible method for establishing communications for fire/safety/rescue operations or other scenarios requiring rapidly-deployable communications with survivable, efficient dynamic networking

  4. Characteristics • MANET • Autonomous system of mobile node • Nodes are equipped with wireless transmitters and receivers using antennas (omni-directional or highly directional, etc) • Characteristics • Dynamic topologies • Bandwidth-constrained variable capacity links • Energy-constrained operations • Limited physical security • The need for scalability

  5. Routing Issues • Qualitative properties of routing protocols • Distributed operation • Loop-freedom • Demand-based operation • Proactive operation • Security • “Sleep” period operation • Unidirectional link support

  6. Routing Issues (cont) • Quantitative metrics • End-to-end data throughput and delay • Route Acquisition Time • Percentage out-of-order delivery • Efficiency • Average number of data bits transmitted/data bit delivered • Average number of control bits transmitted/data bit delivered • Average number of control and data packets transmitted/data packet delivered

  7. Routing Issues (cont) • Networking context • Network size (number of nodes) • Network connectivity (average number of neighbors of a node) • Topological rate of change • Link capacity • Fraction of unidirectional links • Traffic patterns • Mobility patterns • Fraction and frequency of sleeping node

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