Sim imulating Cellular Communications in in Vehicular Networks: - - PowerPoint PPT Presentation

Sim imulating Cellular Communications in in Vehicular Networks:

Antonio Virdis - SimuLTE 2017 1

Giovanni Nardini, Antonio Virdis, Giovanni Stea University of Pisa - Italy

making in interoperable wit ith

Outline

• Why cellular communications and vehicular networks
• SimuLTE background
• Modularity and Interoperability
• Proposed solution

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Vehicular networks

• Vehicle to everything (V2X)
• V2V
• V2I
• V2P

Context

Cellular communications (4G/5G)

• Ubiquitous coverage
• Support to high speed mobility
• Direct communication (D2D)

Antonio Virdis - SimuLTE 2017

4

UE3 UE4

Interactions

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Cellular communications Vehicular networks

Mobility paradigm of users New challenges:

• Bulk handovers
• “Load” mobility
• Stringent delay constraints

Enables fast and reliable communications Provide multiple communication paradigms (D2D vs D2I)

SimuLTE Basics

• OMNeT-based system-level simulator of LTE networks
• Focused on testing algorithms for resource scheduling at large scale
• INET based
• Built as an additional NIC interface
• Follow the evolution of cellular communications

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SimuLTE Basics (1)

eNB UE

UE

IP UDP TCP UDP apps TCP apps LTE NIC

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Standard Hosts

Binder

Requirements from Veins

• TraCIMobility
• Dynamic creation/destruction
• Module management
• Addressing
• Handover

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Module responsible for mobility Vehicles can enter/exit the simulation dynamically

Related Work: VeinsLTE

• First attempt to integrate SimuLTE and Veins
• Modifications to both Veins and SimuLTE
• Veins need to interact directly with SimuLTE
• Introduces a third framework

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Proposed solution

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Modularity and Interoperability

Mobility modules

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LTE NIC IP TCP UDP TCPApps UDPApps HostAuto Configurator INET Mobility Vehicular Mobility

Car

• Two mobility modules
• Only one active at a time
• Use the Feature mechanism
• Interested modules will register to the

active mobility module

Dynamic creation/destruction: Modules

• Initialize and finish functions will interact with the Binder, which

keeps track of active UEs

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Dynamic creation/destruction: Addressing

• Designed to minimize modification to

applications.

• Node creation: IP autoconfiguration
• Traffic start: check existence
• Node destruction: drop packets

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LTE NIC IP TCP UDP TCPApps UDPApps HostAuto Configurator INET Mobility Vehicular Mobility

Car

Handover support

• Allows UEs to change serving cell -> cell selection
• Implemented using a best-SINR policy
• Initial association can be either static or handover-like

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Handover support

• Allows UEs to change serving cell -> cell selection
• Implemented using a best-SINR policy
• Initial association can be either static or handover-like

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Evolved Packet Core (EPC)

Exemplary Scenario

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*.manager.moduleType="lte.corenetwork.nodes.cars.Car" *.manager.moduleName="car" *.car[0].vehicularMobility.accidentCount = 1 *.car[0].vehicularMobility.accidentStart = 20s *.car[0].vehicularMobility.accidentDuration = 30s **.dynamicCellAssociation = true *.car[*].masterId = 1 *.car[*].macCellId = 1

Further Developments and Case Studies

• Moving towards 5G
• CRAN deployments
• Mobile Edge Computing (MEC) applications
• Include novel protocol aspects
• Implement V2V applications (e.g. platooning)
• Persevere with interoperability (e.g. other mobility models)

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Somewhat similar to the concept of Fog computing

Conclusions

• Cellular technologies and vehicular networks
• Requirements coming from Veins
• How to support interoperability between Veins and SimuLTE
• Mobility modules
• Dynamic creation/destruction
• Handover support
• Case studies

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Thanks for your attention

19 Antonio Virdis - SimuLTE 2017

simulte.com

• r

github -> inet -> simulte