smart communication with space: protocols and …...1 smart communication with space: protocols and...
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Smart Communication with Space: Protocols and Mobility Management
Keynote talk atIEEE Smart World Congress 2018
Guangzhou, ChinaOct 8-12, 2018
Dr. Mohammed AtiquzzamanUniversity of Oklahoma, Norman, OK 73019‐6151, USA.
[email protected], www.cs.ou.edu/~atiq
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4Mohammed Atiquzzaman, University of Oklahoma
Smart World: IoT Components
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5Mohammed Atiquzzaman, University of Oklahoma
IoT: Technologies for Connectivity
WiFi ZigBee 6LOPAN Bluetooth 4G/5G Broadband WiMax
From any time, any place connectivity for anyone, we will now have connectivity for anything!
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6Mohammed Atiquzzaman, University of Oklahoma
IoT/Smart World Applications
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7Mohammed Atiquzzaman, University of Oklahoma
IoT Applications
Transport and Logistics Environmental Monitoring
Source: Pasquale Puzio, “Internet of Things and its applications”
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Smart City
Safety, financial, and environmental benefits
CONNECTED TRAFFIC SIGNALS Reduced congestion Improved emergency services response times Lower fuel usage
PARKING AND LIGHTING Increased efficiency Power and cost savings New revenue opportunities
CITY SERVICES Efficient service delivery Increased revenues Enhanced environmental monitoring
capabilities
Source: Mikhail Kader (Cisco), IoT (Internet of Things) and Security
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11Mohammed Atiquzzaman, University of Oklahoma
Smart Health Scenario
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13Mohammed Atiquzzaman, University of Oklahoma
IoT via Satellite
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16Mohammed Atiquzzaman, University of Oklahoma
System View of IoT
Source: Sanctis, Cianca, Araniti, Bisio, and Prasad, “Satellite Communications Supporting Internet of Remote Things”
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17Mohammed Atiquzzaman, University of Oklahoma
Advantages of Satellites over Terrestrial for IoT
Ubiquitous coverage and is usually more reliable, especially in remote and underserved regions.
“Things”/Smart objects are often remote dispersed over a wide geographical area inaccessible
Satellite‐based IoT can offer truly global coverage for many applications Trans‐oceanic shipping (Connected Ship), Trains, Transportation (Connected
Vehicles) Network in Motion Battlefield Mobility Aeronautical Network in Motion Energy and mining companies
IoT/M2M via satellite permits the use of a single platform, as compared to a patchwork of terrestrial networks. Example: mission‐critical military and transportation
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21Mohammed Atiquzzaman, University of Oklahoma
IoT and Mobility
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23Mohammed Atiquzzaman, University of Oklahoma
Smart Space: Connecting Space Assets
Spacecrafts can have IP‐addressable smart devices (‘things’) Sensor Radars Telescopes Weather observation equipment Forest fire detection
The smar space ‘things’ need to be connected to the Internet. These space ‘things’ are
Mobile Connected together in a LAN on a spacecraft
Connecting mobile space ‘things’ to the Internet requires mobility management.
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24Mohammed Atiquzzaman, University of Oklahoma
Handoffs in satellite IP networks
Link Layer Handoff Inter‐satellite handoff Link handoff Spotbeam handoff
Network Layer Handoff Satellite as a router Satellite as a mobile host
A Globalstar design, with 48 active satellites in 8 planes of 6.
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25Mohammed Atiquzzaman, University of Oklahoma
Inter‐satellite Handoff
The movement of satellite causes a Ground Station being handed off from one satellite to another.
Similar to inter‐switch handoff in the case of terrestrial mobile network.
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28Mohammed Atiquzzaman, University of Oklahoma
Network Layer HandoffCase 1: satellite as a router
Satellites act as IP routing devices.o No on‐board
device generating or consuming data
Satellites are allocated with different IP prefix.
FH/MH need to maintain continuous connection with Remote Computer.
FH/MH
Remote Computer
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29Mohammed Atiquzzaman, University of Oklahoma
Network Layer HandoffCase 2: satellite as a mobile host
Satellite onboard equipments act as the endpoint of the communication.
Ground stations are allocated with different IP prefix.
Satellite need to maintain continuous connection with remote computer.
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30Mohammed Atiquzzaman, University of Oklahoma
Mobility Management
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31Mohammed Atiquzzaman, University of Oklahoma
Mobile IP: Enabling IP host mobility
When Mobile Host moves to a new domain, a location update is sent to Home Agent.
Packets from CN to Mobile Host are encapsulated and forwarded to MH’s current care‐of address.
Packets are decapsulatedand delivered to upper layer protocol.
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32Mohammed Atiquzzaman, University of Oklahoma
Main Drawbacks of base Mobile IP
Need modification to Internet infrastructure.
High handoff latency and packet loss rate.
Inefficient routing path.
Conflict with network security solutions such as Ingress Filtering and Firewalls.
Home Agent must reside in MH’s home network, making it hard to duplicate HA to various locations to increase survivability and manageability.
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33Mohammed Atiquzzaman, University of Oklahoma
SIGMA: Seamless IP‐diversity based Generalized Mobility Architecture
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34Mohammed Atiquzzaman, University of Oklahoma
SIGMA: Motivation
Several NASA projects considering IP in space and Mobile IP Global Precipitations Measurement (GPM) Operating Missions as Nodes on the Internet (OMNI) Communication and Navigation Demonstration on Shuttle (CANDOS) NASA currently working with Cisco on developing a Mobile router
Mobile IP may play a major role in various space related NASA projects Advanced Aeronautics Transportation Technology (AATT) Weather Information Communication (WINCOMM) Small Aircraft Transportation Systems (SATS)
Develop an efficient, secure and seamless handoff scheme which would be applicable to both the satellite and wireless/cellular environment.
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38Mohammed Atiquzzaman, University of Oklahoma
SIGMA: Basic concepts
R em oteC om puter
R outer
W ire lessA ccess
N etw ork1
M ulti-hom edM ob ile H ost
W ire lessAccess
N etw ork2
O ne S C TPA ssocia tion
Mobile IP assumes the upper layer protocol use only one IP address to identify an logical connection. Some buffering or re-routing should be done at the router for seamless handover.
SCTP support multiple IP addresses at transport layer naturally via multi-homing feature. When mobile host moving between cells, it can setup a new path to communicate with the remote computer while still maintaining the old path.
Advantages of SIGMA: Reduced packet loss and handover latency Increased throughput No special requirement on Router and Access
networks.
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39Mohammed Atiquzzaman, University of Oklahoma
SCTP: A new Transport Protocol for Internet
TCP, UDP, SCTP
IP
Link LayerPhysical Layer
Upper layer applications
TCP and SCTP compared Both of them are reliable transport
protocols; Similar Congestion Control algorithms
(slow start, congestion avoidance); SCTP has two new features:
Multihoming Multistreaming
What is SCTP?
• SCTP: “Stream Control Transmission Protocol”
• Originally designed to support SS7 signaling messages over IP networks. Currently supports most of the features of TCP
• Standardized by IETF RFC 2960
• Reliable transport protocol on top of IP
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40Mohammed Atiquzzaman, University of Oklahoma
Technology Readiness Level (TRL)
TRL: a method of estimating technology maturity of Critical Technology Elements (CTE)
Examines- program concepts,- technology
requirements, and- demonstrated
technology capabilities. Simulation, model,
prototype
Component/ BREADBOARD validation
Validation in SIMULATED or REALSPACE
SYSTEM validation in simulated enviornment
Academic Equivalence
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41Mohammed Atiquzzaman, University of Oklahoma
SIGMA: Satellite Implementation
Solid State Data Recorder
Surrey Satellite Techologies Ltd.
Disaster Monitoring constellation
PowerPC processor
RTEMS operating system – very basic functionality.
Very limited memory.
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54Mohammed Atiquzzaman, University of Oklahoma
Vertical Handoff
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56Mohammed Atiquzzaman, University of Oklahoma
SIGMA: Application to Vertical Handoff
Different access network technologies are integrating with each other to give mobile user a transparent view of Internet.
Handover is no longer only limited to between two subnets in WLAN or between two cells in cellular network (horizontal handover).
Mobile users are expecting seamless handover between different access networks (vertical handover).
The mobility based on SCTP multi-homing is a feasible approach to meet the requirement of vertical handover.
SD
RC
N10
1RI
NG
CN
TLR
644-
0104
-001
ALARM
OFFLINE
IDLE
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60Mohammed Atiquzzaman, University of Oklahoma
Results
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61Mohammed Atiquzzaman, University of Oklahoma
SIGMA: Results
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62Mohammed Atiquzzaman, University of Oklahoma
Mobile IP: Results
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86Mohammed Atiquzzaman, University of Oklahoma
Criticisms of SIGMA
Applications using TCP will not work. Can DNS handle location update traffic load DNS was not designed as location manager
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87Mohammed Atiquzzaman, University of Oklahoma
Conclusions
Satellite is a critical component of future Smart World. Many mobility issues arise due to movement of “things” and
“satellites”. Efficient mobility management schemes involving satellites in IoT is
an important topic for future research. Support of satellite services is an important component for its
success in IoT.
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96Mohammed Atiquzzaman, University of Oklahoma
Acknowledgements
National Aeronautics and Space Administration (NASA) and Cisco for funding of this project
The following people are participating/participated in the design, development and testing of SIGMA and SINEMO Shaojian Fu (Opnet) Yong‐Jin Lee (Korea National University of Education) Justin Jones (Riskmetrics) Suren Sivagurunathan (Yousendit) Abu Sayeem Reaz (Univ. of California, Davis) Abu Shahriar (Univ. of Oklahoma) Md. Shohrab Hossain (BUET, Bangladesh) William Ivancic (NASA) Wesley Eddy (NASA) David Stewart (NASA) Lloyd Wood (Cisco)
Further information: [email protected]
www.cs.ou.edu/~atiq
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97Mohammed Atiquzzaman, University of Oklahoma
Thank youContact info
Mohammed [email protected](405) 325 8077
www.cs.ou.edu/~atiq